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CN102916768B - The feedback method of High-Speed Dedicated Physical Control Channel, device and system - Google Patents

The feedback method of High-Speed Dedicated Physical Control Channel, device and systemDownload PDF

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CN102916768B
CN102916768BCN201210349134.5ACN201210349134ACN102916768BCN 102916768 BCN102916768 BCN 102916768BCN 201210349134 ACN201210349134 ACN 201210349134ACN 102916768 BCN102916768 BCN 102916768B
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codebook
information
feedback
precoding
rank
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CN102916768A (en
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铁晓磊
胡文权
吴更石
花梦
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Huawei Technologies Co Ltd
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Abstract

The embodiment of the present invention provides feedback method and the equipment of a kind of HS-DPCCH.Method includes: base station forwarding network side is handed down to the pattern of the feedback format of UE；Base station receives UE and passes through HS-DPCCH the channel condition information sent according to the pattern of feedback format, order to obtain precoding codebook and precoding codebook is used for performing precoding processing, wherein channel condition information includes the first codebook information and the second codebook information, first codebook information includes the RI of PCI and the first code book of the first code book, second codebook information includes the RI of PCI and the second code book of the second code book, the PCI of PCI and the second code book of the first code book is for determining the precoding codebook of the final utilization of channel precoding processing, the RI of RI and the second code book of the first code book is for determining the order of precoding codebook.Technique scheme can ensure accuracy of feedback information in systems and reduce feedback quantity.

Description

Translated fromChinese
高速专用物理控制信道的反馈方法、装置和系统Feedback method, device and system for high-speed dedicated physical control channel

技术领域technical field

本发明涉及无线通信领域，更具体地，涉及高速专用物理控制信道（英文为HS-DPCCH，HighspeeddedicatedPhysicalControlChannel）的反馈方法、装置和系统。The present invention relates to the field of wireless communication, and more specifically, to a feedback method, device and system for a high-speed dedicated physical control channel (HS-DPCCH in English, HighspeeddedicatedPhysicalControlChannel).

背景技术Background technique

随着无线通信的技术发展，提出了4路多输入多输出（英文为4BranchMIMO，4branchMulti-InputMulti-Output）的技术趋势。4BranchMIMO的技术中，当前信道允许下行空间复用所支持的最大层数，也就是信道的秩高达4层（layer），同时4BranchMIMO的技术中，需要支持高达4个载波（英文为4C，4Carrier）的多载波情况。因此，HS-DPCCH的反馈方式或格式需要进行设计。HS-DPCCH中，用户设备（英文为UE，UserEquipment）需要反馈CQI、RI、PCI和ACK或CQI、RI、PCI和NACK的组合信息。其中CQI是英文ChannelQualityIndicator的缩写，表示信道质量信息；RI是英文RankIndication的缩写，表示信道的秩的指示；PCI是英文Pre-CodingIndicator的缩写，指示信道预编码处理使用的预编码码本（英文为codebook）对应的索引值；ACK是英文ACknowledge的缩写，表示确认信息；NACK是英文Non-ACK的缩写，表示非确认信息。此外，预编码码本的秩是信道预编码处理时使用的当前下行发送每个TTI（英文为TransmissionTimeInterval，中文为传输时间间隔）的秩。With the development of wireless communication technology, the technical trend of 4-way multiple-input multiple-output (4BranchMIMO in English, 4branchMulti-InputMulti-Output) is proposed. In 4Branch MIMO technology, the current channel allows the maximum number of layers supported by downlink spatial multiplexing, that is, the rank of the channel is up to 4 layers (layer). At the same time, in 4Branch MIMO technology, it needs to support up to 4 carriers (4C in English, 4Carrier) multi-carrier situation. Therefore, the feedback mode or format of the HS-DPCCH needs to be designed. In the HS-DPCCH, the user equipment (UE in English, UserEquipment) needs to feed back the combination information of CQI, RI, PCI and ACK or CQI, RI, PCI and NACK. Among them, CQI is the abbreviation of ChannelQualityIndicator in English, indicating channel quality information; RI is the abbreviation of RankIndication in English, indicating the rank indication of the channel; PCI is the abbreviation of Pre-CodingIndicator in English, indicating the precoding codebook used in channel precoding processing (English is codebook) corresponding index value; ACK is the abbreviation of English ACKnowledge, indicating confirmation information; NACK is the abbreviation of English Non-ACK, indicating non-confirmation information. In addition, the rank of the precoding codebook is the rank of each TTI (TransmissionTimeInterval in English and Transmission Time Interval in Chinese) currently used in channel precoding processing.

此外，无线通信的技术发展中还出现了预编码码本的双码本的设计思路。假设最终的预编码码本为W，则W的构造方式为：In addition, in the technical development of wireless communication, a design idea of dual codebooks of precoding codebooks also appears. Assuming that the final precoding codebook is W, the construction method of W is:

W=W(1)W(2)式(1)W=W(1) W(2) formula (1)

其中W(1)称为第一码本，反映同极化天线内的信道关系，W(2)为第二码本，表示了不同极化天线之间的相位变化和信道变化关系。第一码本和第二码本的主要区别是，第一码本选择了一组波束（英文为beam），而第二码本则是在这一组波束中选择一个或多个最好的波束。因此，第一码本（W(1)）更新周期长，是一个长期码本，而第二码本（W(2)）更新周期短，是一个短期码本。Among them, W(1) is called the first codebook, which reflects the channel relationship in the same-polarized antennas, and W(2) is the second codebook, which shows the phase change and channel change relationship between antennas with different polarizations. The main difference between the first codebook and the second codebook is that the first codebook selects a set of beams (beam in English), while the second codebook selects one or more of the best beams in this set of beams. beam. Therefore, the first codebook (W(1) ) has a long update period and is a long-term codebook, while the second codebook (W(2) ) has a short update period and is a short-term codebook.

由于HS-DPCCH中，需要反馈的信息有ACK/NACK、CQI、RI和PCI。使用双码本的4BranchMIMO及更高秩的MIMO技术中，如何能够保证反馈信息精度且减小反馈量，HS-DPCCH的反馈信息需要重新设计。In the HS-DPCCH, the information to be fed back includes ACK/NACK, CQI, RI and PCI. In 4Branch MIMO using dual codebooks and higher-rank MIMO technologies, how to ensure the accuracy of feedback information and reduce the amount of feedback, the feedback information of HS-DPCCH needs to be redesigned.

发明内容Contents of the invention

有鉴于此，本发明实施例提供一种HS-DPCCH的反馈方法，以解决保证反馈信息精度且减小反馈量问题。In view of this, an embodiment of the present invention provides an HS-DPCCH feedback method to solve the problem of ensuring the accuracy of feedback information and reducing the amount of feedback.

第一方面，提供了一种HS-DPCCH的反馈方法，包括：基站转发网络侧下发给用户设备（UE）的反馈格式的图案；基站接收UE通过HS-DPCCH按照反馈格式的图案发送的信道状态信息以获取预编码码本和预编码码本的秩用于执行预编码处理，其中信道状态信息包括第一码本信息和第二码本信息，第一码本信息包括第一码本的预编码码本索引值PCI和第一码本的秩信息RI，第二码本信息包括第二码本的PCI和第二码本的RI，第一码本的PCI和第二码本的PCI用于确定信道预编码处理的最终使用的预编码码本，第一码本的RI和第二码本的RI用于确定预编码码本的秩。In the first aspect, an HS-DPCCH feedback method is provided, including: the base station forwards the pattern of the feedback format sent by the network side to the user equipment (UE); the base station receives the channel sent by the UE through the HS-DPCCH according to the pattern of the feedback format The state information is used to obtain the precoding codebook and the rank of the precoding codebook for performing precoding processing, wherein the channel state information includes the first codebook information and the second codebook information, and the first codebook information includes the information of the first codebook The precoding codebook index value PCI and the rank information RI of the first codebook, the second codebook information includes the PCI of the second codebook and the RI of the second codebook, the PCI of the first codebook and the PCI of the second codebook Used to determine the final precoding codebook used in the channel precoding process, the RI of the first codebook and the RI of the second codebook are used to determine the rank of the precoding codebook.

在第一种可能的实现方式中，反馈格式的图案中，包括对应于一个TTI单位内HS-DPCCH信道的两种反馈格式，第一码本信息的反馈格式和第二码本信息的反馈格式，分别用以承载第一码本信息和第二码本信息，在一个反馈格式的图案中，至少在一个指定TTI上使用第一码本信息的反馈格式，至少在一个或多个指定的连续TTI单位上使用第二码本信息的反馈格式，其中反馈格式的图案的反馈周期对应于第一码本信息的反馈周期，第一码本信息的反馈周期比第二码本信息的反馈周期长。In a first possible implementation, the pattern of the feedback format includes two feedback formats corresponding to the HS-DPCCH channel in one TTI unit, the feedback format of the first codebook information and the feedback format of the second codebook information , respectively used to carry the first codebook information and the second codebook information, in a feedback format pattern, use the feedback format of the first codebook information on at least one specified TTI, at least in one or more specified consecutive The feedback format of the second codebook information is used on the TTI unit, wherein the feedback period of the pattern of the feedback format corresponds to the feedback period of the first codebook information, and the feedback period of the first codebook information is longer than the feedback period of the second codebook information .

第二方面，提供了一种HS-DPCCH的反馈方法，包括:UE接收基站转发网络侧下发给UE的反馈格式的图案；UE通过HS-DPCCH信道，按照从基站接收的反馈格式的图案向基站发送信道状态信息，其中信道状态信息包括第一码本信息和第二码本信息，第一码本信息包括第一码本的预编码码本索引值PCI和第一码本的秩信息RI，第二码本信息包括第二码本的PCI和第二码本的RI，第一码本的PCI和第二码本的PCI用于确定信道预编码处理的最终使用的预编码码本，第一码本的RI和第二码本的RI用于确定预编码码本的秩。In a second aspect, an HS-DPCCH feedback method is provided, including: the UE receives a base station forwarding a pattern of a feedback format sent by the network side to the UE; and the UE transmits the pattern of the feedback format received from the base station through the HS-DPCCH channel The base station sends channel state information, wherein the channel state information includes first codebook information and second codebook information, and the first codebook information includes the precoding codebook index value PCI of the first codebook and the rank information RI of the first codebook , the second codebook information includes the PCI of the second codebook and the RI of the second codebook, the PCI of the first codebook and the PCI of the second codebook are used to determine the final precoding codebook used in the channel precoding process, The RI of the first codebook and the RI of the second codebook are used to determine the rank of the precoding codebook.

在第一种可能的实现方式中，反馈格式的图案中，包括对应于一个TTI单位内HS-DPCCH信道的两种反馈格式，第一码本信息的反馈格式和第二码本信息的反馈格式，分别用以承载第一码本信息和第二码本信息，在一个反馈格式的图案中，至少在一个指定TTI上使用第一码本信息的反馈格式，至少在一个或多个指定的连续TTI单位上使用第二码本信息的反馈格式，其中反馈格式的图案的反馈周期对应于第一码本信息的反馈周期，第一码本信息的反馈周期比第二码本信息的反馈周期长。In a first possible implementation, the pattern of the feedback format includes two feedback formats corresponding to the HS-DPCCH channel in one TTI unit, the feedback format of the first codebook information and the feedback format of the second codebook information , respectively used to carry the first codebook information and the second codebook information, in a feedback format pattern, use the feedback format of the first codebook information on at least one specified TTI, at least in one or more specified consecutive The feedback format of the second codebook information is used on the TTI unit, wherein the feedback period of the pattern of the feedback format corresponds to the feedback period of the first codebook information, and the feedback period of the first codebook information is longer than the feedback period of the second codebook information .

第三方面，提供了一种基站，包括发送单元和接收单元：发送单元用于转发网络侧下发给用户设备（UE）的反馈格式的图案；接收单元用于接收UE通过高速专用物理控制信道HS-DPCCH按照发送单元发送的反馈格式的图案发送的信道状态信息以获取预编码码本和预编码码本的秩用于执行预编码处理，其中信道状态信息包括第一码本信息和第二码本信息，第一码本信息包括第一码本的预编码码本索引值PCI和第一码本的秩信息RI，第二码本信息包括第二码本的PCI和第二码本的RI，第一码本的PCI和第二码本的PCI用于确定信道预编码处理的最终使用的预编码码本，第一码本的RI和第二码本的RI用于确定预编码码本的秩。In a third aspect, a base station is provided, including a sending unit and a receiving unit: the sending unit is used to forward the pattern of the feedback format sent by the network side to the user equipment (UE); the receiving unit is used to receive the UE through the high-speed dedicated physical control channel The channel state information sent by the HS-DPCCH according to the pattern of the feedback format sent by the sending unit is used to obtain the precoding codebook and the rank of the precoding codebook for performing precoding processing, wherein the channel state information includes the first codebook information and the second Codebook information, the first codebook information includes the precoded codebook index value PCI of the first codebook and the rank information RI of the first codebook, and the second codebook information includes the PCI of the second codebook and the rank information RI of the second codebook RI, the PCI of the first codebook and the PCI of the second codebook are used to determine the final precoding codebook used in the channel precoding process, and the RI of the first codebook and the RI of the second codebook are used to determine the precoding code The rank of this book.

在第一种可能的实现方式中，,接收单元使用的反馈格式的图案中，包括对应于一个TTI单位内HS-DPCCH信道的两种反馈格式，第一码本信息的反馈格式和第二码本信息的反馈格式，分别用以承载第一码本信息和第二码本信息，在一个反馈格式的图案中，至少在一个指定TTI上使用第一码本信息的反馈格式，至少在一个或多个指定的连续TTI单位上使用第二码本信息的反馈格式，其中反馈格式的图案的反馈周期对应于第一码本信息的反馈周期，第一码本信息的反馈周期比第二码本信息的反馈周期长。In a first possible implementation, the pattern of the feedback format used by the receiving unit includes two feedback formats corresponding to the HS-DPCCH channel in one TTI unit, the feedback format of the first codebook information and the second codebook information The feedback format of this information is used to carry the first codebook information and the second codebook information respectively. In a feedback format pattern, use the feedback format of the first codebook information on at least one specified TTI, at least in one or The feedback format of the second codebook information is used on multiple specified continuous TTI units, wherein the feedback period of the pattern of the feedback format corresponds to the feedback period of the first codebook information, and the feedback period of the first codebook information is shorter than that of the second codebook The information feedback cycle is long.

第四方面，提供了一种UE，包括接收单元和发送单元，其特征在于：接收单元用于接收基站转发网络侧下发给UE的反馈格式的图案，并将反馈格式的图案发送到发送单元；发送单元，用于通过HS-DPCCH信道，按照接收单元从基站接收的反馈格式的图案向基站发送信道状态信息，其中信道状态信息包括第一码本信息和第二码本信息，第一码本信息包括第一码本的预编码码本索引值PCI和第一码本的秩信息RI，第二码本信息包括第二码本的PCI和第二码本的RI，第一码本的PCI和第二码本的PCI用于确定信道预编码处理的最终使用的预编码码本，第一码本的RI和第二码本的RI用于确定预编码码本的秩。In a fourth aspect, a UE is provided, including a receiving unit and a sending unit, wherein the receiving unit is configured to receive a pattern of a feedback format sent by the base station forwarding network side to the UE, and send the pattern of the feedback format to the sending unit The sending unit is used to send channel state information to the base station according to the pattern of the feedback format received by the receiving unit from the base station through the HS-DPCCH channel, wherein the channel state information includes first codebook information and second codebook information, the first codebook This information includes the precoding codebook index value PCI of the first codebook and the rank information RI of the first codebook, the second codebook information includes the PCI of the second codebook and the RI of the second codebook, and the rank information RI of the first codebook The PCI and the PCI of the second codebook are used to determine the final precoding codebook used in the channel precoding process, and the RI of the first codebook and the RI of the second codebook are used to determine the rank of the precoding codebook.

在第一种可能的实现方式中，发送单元使用的反馈格式的图案中，包括对应于一个TTI单位内HS-DPCCH信道的两种反馈格式，第一码本信息的反馈格式和第二码本信息的反馈格式，分别用以承载第一码本信息和第二码本信息，在一个反馈格式的图案中，至少在一个指定TTI上使用第一码本信息的反馈格式，至少在一个或多个指定的连续TTI单位上使用第二码本信息的反馈格式，其中反馈格式的图案的反馈周期对应于第一码本信息的反馈周期，第一码本信息的反馈周期比第二码本信息的反馈周期长。In a first possible implementation, the pattern of the feedback format used by the sending unit includes two feedback formats corresponding to the HS-DPCCH channel in one TTI unit, the feedback format of the first codebook information and the second codebook information The feedback format of the information is used to carry the first codebook information and the second codebook information respectively. In a feedback format pattern, the feedback format of the first codebook information is used at least on one specified TTI, at least in one or more Use the feedback format of the second codebook information on specified continuous TTI units, wherein the feedback period of the pattern of the feedback format corresponds to the feedback period of the first codebook information, and the feedback period of the first codebook information is shorter than that of the second codebook information The feedback cycle is long.

本发明实施例中，基站接收按照一定反馈格式的图案周期性反馈的携带用于确定最终预编码码本的双码本的信道状态信息，通过上述这种长期码本信息（第一码本信息）和短期码本信息（第二码本信息）相结合的反馈方式，可以在保证反馈信息精度的前提下减小反馈量，从而节省空口资源和提高系统性能。In the embodiment of the present invention, the base station receives the channel state information carrying the dual codebook used to determine the final precoding codebook that is periodically fed back according to a pattern of a certain feedback format, and through the above-mentioned long-term codebook information (the first codebook information ) and short-term codebook information (the second codebook information) can reduce the amount of feedback while ensuring the accuracy of the feedback information, thereby saving air interface resources and improving system performance.

附图说明Description of drawings

为了更清楚地说明本发明实施例的技术方案，下面将对本发明实施例中所需要使用的附图作简单地介绍，显而易见地，下面所描述的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings required in the embodiments of the present invention. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For Those of ordinary skill in the art can also obtain other drawings based on these drawings without making creative efforts.

图1是本发明第一实施例的HS-DPCCH的反馈方法的示意框图。Fig. 1 is a schematic block diagram of an HS-DPCCH feedback method according to a first embodiment of the present invention.

图2是本发明第二实施例的信道状态信息的示意图。Fig. 2 is a schematic diagram of channel state information according to a second embodiment of the present invention.

图3是本发明第三实施例的一种反馈格式的图案的示意图。Fig. 3 is a schematic diagram of a pattern of a feedback format according to a third embodiment of the present invention.

图4是本发明第四实施例的另一种反馈格式的图案的示意图。Fig. 4 is a schematic diagram of another feedback format pattern according to the fourth embodiment of the present invention.

图5是本发明第五实施例的另一种反馈格式的图案的示意图。Fig. 5 is a schematic diagram of another feedback format pattern according to the fifth embodiment of the present invention.

图6是本发明第六实施例的另一种反馈格式的图案的示意图。Fig. 6 is a schematic diagram of another feedback format pattern according to the sixth embodiment of the present invention.

图7是本发明第七实施例的HS-DPCCH的另一反馈方法的示意框图。Fig. 7 is a schematic block diagram of another HS-DPCCH feedback method according to the seventh embodiment of the present invention.

图8是本发明第八实施例的基站的示意框图。Fig. 8 is a schematic block diagram of a base station according to an eighth embodiment of the present invention.

图9是本发明第九实施例的UE的示意框图。Fig. 9 is a schematic block diagram of a UE according to a ninth embodiment of the present invention.

图10是本发明第十实施例的基站的示意框图。Fig. 10 is a schematic block diagram of a base station according to a tenth embodiment of the present invention.

图11是本发明第十一实施例的UE的示意框图。Fig. 11 is a schematic block diagram of a UE according to an eleventh embodiment of the present invention.

具体实施方式detailed description

下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明的一部分实施例，而不是全部实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都应属于本发明保护的范围。The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

通用移动通信系统(UMTS，UniversalMobileTelecommunicationsSystem)，Universal Mobile Telecommunications System (UMTS, UniversalMobileTelecommunicationsSystem),

本发明的技术方案，可以应用于UMTS（英文为UniversalMobileTelecommunicationsSystem，中文为通用移动通信系统）。用户设备（UE，UserEquipment），也可称之为移动终端（MobileTerminal）、移动用户设备等，可以经无线接入网（例如，RAN，RadioAccessNetwork）与一个或多个核心网进行通信，用户设备可以是移动终端，如移动电话（或称为“蜂窝”电话）和具有移动终端的计算机，例如，可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置，它们与无线接入网交换语音和/或数据。基站，可以是UMTS中的基站（NodeB）。The technical scheme of the present invention can be applied to UMTS (Universal Mobile Telecommunications System in English and Universal Mobile Telecommunications System in Chinese). User equipment (UE, UserEquipment), also known as mobile terminal (MobileTerminal), mobile user equipment, etc., can communicate with one or more core networks via a radio access network (for example, RAN, RadioAccessNetwork), and the user equipment can are mobile terminals, such as mobile telephones (or "cellular" telephones) and computers with mobile terminals, such as portable, pocket, hand-held, built-in computers, or vehicle-mounted mobile devices, which are connected to the wireless access network Exchange voice and/or data. The base station may be a base station (NodeB) in UMTS.

另外，本文中术语“系统”和“网络”在本文中常被可互换使用。本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。Additionally, the terms "system" and "network" are often used herein interchangeably. The term "and/or" in this article is just an association relationship describing associated objects, which means that there can be three relationships, for example, A and/or B can mean: A exists alone, A and B exist simultaneously, and there exists alone B these three situations. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.

基于演进考虑，HSDPA（英文为HighDownlinkPacketAccess，中文为高速下行分组接入）设计遵循的准则之一是尽可能地兼容R99版本中定义的功能实体与逻辑层间的功能划分。在保持R99版本结构的同时，在NodeB(基站)增加了新的媒体接入控制(英文为MediaAccessControl，缩写为MAC)实体MAC-hs，负责调度、链路调整以及HARQ（英文为HybridAutomaticRepeatRequest，中文为混合自动重传请求）控制等功能。这样使得系统可以在无线网络控制器（RNC）统一对用户在HS-PDSCH（英文为HighSpeed-PhysicalDataShareChannel，中文为高速-物理共享数据信道）与专用数据信道DCH之间切换进行管理。HSDPA引入的信道使用与其它信道相同的频点，从而使得运营商可以灵活地根据实际业务情况对信道资源进行灵活配置。HSDPA信道包括HS-PDSCH以及相应的下行共享控制信道(英文为HighSpeed-ShareControlChannel，缩写为HS-SCCH)和上行专用物理控制信道(HS-DPCCH)。下行共享控制信道(HS-SCCH)承载从MAC-hs到用户设备的控制信息，包括用户设备身份标记、HARQ相关参数以及HS-PDSCH使用的传输格式。这些信息每隔2ms从基站发向用户设备。上行专用物理控制信道(HS-DPCCH)则由用户设备用来向基站报告下行信道质量状况即上下文中的信道状态信息，并请求基站重传有错误的数据块。这里HS-DPCCH的反馈信息具体为：HARQ-ACK信息、CQI信息，当使用MIMO时还包括预编码信息PCI和秩信息RI。Based on evolution considerations, one of the design criteria for HSDPA (High Downlink Packet Access in English and High Downlink Packet Access in Chinese) is to be as compatible as possible with the functional division between functional entities and logical layers defined in the R99 version. While maintaining the structure of the R99 version, a new media access control (MediaAccessControl in English, abbreviated as MAC) entity MAC-hs is added to the NodeB (base station), which is responsible for scheduling, link adjustment and HARQ (HybridAutomaticRepeatRequest in English, and HybridAutomaticRepeatRequest in Chinese). hybrid automatic repeat request) control and other functions. In this way, the system can manage the switching between HS-PDSCH (High Speed-Physical Data Share Channel in English, High Speed-Physical Shared Data Channel in Chinese) and dedicated data channel DCH in a unified manner in the radio network controller (RNC). The channels introduced by HSDPA use the same frequency points as other channels, so that operators can flexibly configure channel resources according to actual business conditions. The HSDPA channel includes the HS-PDSCH, the corresponding downlink shared control channel (High Speed-ShareControlChannel in English, abbreviated as HS-SCCH) and the uplink dedicated physical control channel (HS-DPCCH). The downlink shared control channel (HS-SCCH) carries the control information from MAC-hs to user equipment, including user equipment identity mark, HARQ related parameters and transmission format used by HS-PDSCH. These information are sent from the base station to the user equipment every 2ms. The uplink dedicated physical control channel (HS-DPCCH) is used by the user equipment to report the downlink channel quality status, that is, the channel state information in the context, to the base station, and to request the base station to retransmit erroneous data blocks. Here, the feedback information of the HS-DPCCH specifically includes: HARQ-ACK information, CQI information, and when MIMO is used, it also includes precoding information PCI and rank information RI.

4BranchMIMO中，UE的反馈信息要求包括：2个CQI反馈；2个ACK或NACK（下面简写为ACK/NACK）反馈。举例来说，在HSDPA（英文为HighSpeedDownlinkPacketAccess，中文为高速下行分组接入）协议中，TTI是2ms，由三个时隙（英文为slot）组成。其中，在HS-DPCCH信道中，第一个Slot用来反馈ACK/NACK，后两个slot用来反馈CQI、PCI及RI。通过现有技术，可以看出4BranchMIMO技术中的ACK/NACK完全可以复用2x2MIMO时的HS-DPCCH第一个时隙的格式设计，而CQI信息也可以完全复用2x2MIMO技术中的编码方式。因此，在4BranchMIMO的HS-DPCCH的反馈信息中，沿用现有技术中CQI和ACK/NACK的反馈方式，针对双码本的使用，需要重新设计的是RI和PCI的反馈方式。In 4Branch MIMO, the UE's feedback information requirements include: 2 CQI feedbacks; 2 ACK or NACK (hereinafter referred to as ACK/NACK for short) feedback. For example, in HSDPA (High Speed Downlink Packet Access in English, High Speed Downlink Packet Access in Chinese) protocol, TTI is 2ms and consists of three time slots (slot in English). Among them, in the HS-DPCCH channel, the first slot is used to feed back ACK/NACK, and the last two slots are used to feed back CQI, PCI and RI. Through the existing technology, it can be seen that the ACK/NACK in 4Branch MIMO technology can fully reuse the format design of the first time slot of HS-DPCCH in 2x2MIMO, and the CQI information can also completely reuse the coding method in 2x2MIMO technology. Therefore, in the HS-DPCCH feedback information of 4Branch MIMO, the CQI and ACK/NACK feedback methods in the prior art are used, and for the use of dual codebooks, the RI and PCI feedback methods need to be redesigned.

同样，当HSDPA扩展到8发8收天线即8BranchMIMO时，HS-DPCCH上的反馈信息仍然要求包括HARQ-ACK、CQI、PCI以及RI。其中HARQ-ACK和CQI可以借鉴多载波技术中的HARQ-ACK和CQI反馈方法加以解决，而PCI信息和RI信息的反馈可仍然可以沿用使用本发明的技术方案：采用第一码本信息和第二码本信息的方式反馈PCI和RI信息，其中第一码本信息包括第一码本的预编码码本索引值PCI和第一码本的秩信息RI，第二码本信息包括第二码本的PCI和第二码本的RI，第一码本的PCI和第二码本的PCI用于确定信道预编码处理的最终使用的预编码码本，第一码本的RI和第二码本的RI用于确定预编码码本的秩；第一码本和第二码本具有不同的反馈周期，以节省反馈信令开销。本发明使用的第一码本和第二码本反馈格式图案同样可以沿用到8BranchMIMO系统中。同理，本发明方案也可以沿用到以后的16x16MIMO等更高秩的MIMO系统中。Similarly, when HSDPA is extended to 8-transmit and 8-receive antennas, that is, 8Branch MIMO, the feedback information on the HS-DPCCH is still required to include HARQ-ACK, CQI, PCI and RI. Among them, HARQ-ACK and CQI can be solved by referring to the HARQ-ACK and CQI feedback methods in multi-carrier technology, and the feedback of PCI information and RI information can still use the technical solution of the present invention: using the first codebook information and the second codebook information PCI and RI information are fed back in the form of two codebook information, wherein the first codebook information includes the precoded codebook index value PCI of the first codebook and the rank information RI of the first codebook, and the second codebook information includes the second codebook The PCI of this codebook and the RI of the second codebook, the PCI of the first codebook and the PCI of the second codebook are used to determine the final precoding codebook used in the channel precoding process, the RI of the first codebook and the second codebook The RI of the precoding codebook is used to determine the rank of the precoding codebook; the first codebook and the second codebook have different feedback cycles to save feedback signaling overhead. The feedback format patterns of the first codebook and the second codebook used in the present invention can also be used in the 8Branch MIMO system. Similarly, the solution of the present invention can also be used in future higher-rank MIMO systems such as 16x16 MIMO.

出于说明的方便，本发明实施例仅针对4branchMIMO技术进行说明，提出了UMTS技术中HS-DPCCH的反馈方式。然而，本发明的HS-DPCCH反馈方法，可以沿用到8BranchMIMO及更高秩的MIMO系统中。For the convenience of description, the embodiment of the present invention is only described for the 4branch MIMO technology, and the HS-DPCCH feedback mode in the UMTS technology is proposed. However, the HS-DPCCH feedback method of the present invention can be used in 8Branch MIMO and higher rank MIMO systems.

图1是本发明第一实施例的HS-DPCCH的反馈方法10的示意框图。方法10可以由网络侧设备，例如基站执行，包括以下内容。Fig. 1 is a schematic block diagram of an HS-DPCCH feedback method 10 according to a first embodiment of the present invention. Method 10 may be performed by a network side device, such as a base station, and includes the following content.

S11，基站转发网络侧下发给UE的反馈格式的图案。S11, the base station forwards the pattern of the feedback format delivered by the network side to the UE.

S12，基站接收UE通过高速专用物理控制信道（HS-DPCCH）并按照反馈格式的图案发送的信道状态信息，以获取预编码码本和所述预编码码本的秩用于执行预编码处理，其中信道状态信息包括第一码本信息和第二码本信息，第一码本信息包括第一码本的预编码码本索引值PCI和第一码本的秩信息RI，第二码本信息包括第二码本的PCI和第二码本的RI，第一码本的PCI和第二码本的PCI用于确定信道预编码处理的最终使用的预编码码本，第一码本的RI和第二码本的RI用于确定预编码码本的秩。S12, the base station receives the channel state information sent by the UE through the high-speed dedicated physical control channel (HS-DPCCH) and according to the pattern of the feedback format, so as to obtain the precoding codebook and the rank of the precoding codebook for performing precoding processing, The channel state information includes the first codebook information and the second codebook information, the first codebook information includes the precoding codebook index value PCI of the first codebook and the rank information RI of the first codebook, and the second codebook information Including the PCI of the second codebook and the RI of the second codebook, the PCI of the first codebook and the PCI of the second codebook are used to determine the final precoding codebook used in the channel precoding process, and the RI of the first codebook and the RI of the second codebook are used to determine the rank of the precoding codebook.

上述信道状态信息不但包括RI和PCI，还可以包括CQI和ACK/NACK信息等。The above channel state information includes not only RI and PCI, but also CQI and ACK/NACK information.

此处，所述第一码本（W(1)）反映了同极化天线内的信道关系，是一个长期码本，第二码本（W(2)）表示了不同极化天线之间的相位变化和信道变化关系，是一个短期码本。基站最终使用的预编码码本由第一码本和第二码本共同决定。与使用一个码本的现有技术相比，通过使用反映双码本信道质量的反馈信息可以在相同反馈开销的前提下提高反馈信息精度。其中，第一码本的RI反映了信道最终使用的秩的范围是在{1或2}还是{3或4}，结合第二码本的RI，能够最终确定信道秩。Here, the first codebook (W(1) ) reflects the channel relationship in the antennas with the same polarization, and is a long-term codebook, and the second codebook (W(2) ) represents the channel relationship between antennas with different polarizations. The relationship between phase change and channel change is a short-term codebook. The precoding codebook finally used by the base station is jointly determined by the first codebook and the second codebook. Compared with the prior art using one codebook, the accuracy of the feedback information can be improved under the same feedback overhead by using the feedback information reflecting the channel quality of the dual codebooks. Wherein, the RI of the first codebook reflects whether the rank range of the channel finally used is {1 or 2} or {3 or 4}, combined with the RI of the second codebook, the channel rank can be finally determined.

本发明实施例中，基站接收按照一定反馈格式的图案周期性反馈的携带用于确定最终预编码码本的双码本的信道状态信息，通过上述这种长期码本信息（第一码本信息）和短期码本信息（第二码本信息）相结合的反馈方式，可以在保证反馈信息精度的前提下减小反馈量，从而节省空口资源和提高系统性能。作为现有技术，基站广播公共导频信道（英文为CommonPilotChannel，缩写为CPICH），并向UE发送HS-PDSCH和HS-SCCH。UE根据CPICH信道的接收信号进行信道估计后得到信道状态信息。In the embodiment of the present invention, the base station receives the channel state information carrying the dual codebook used to determine the final precoding codebook that is periodically fed back according to a pattern of a certain feedback format, and through the above-mentioned long-term codebook information (the first codebook information ) and short-term codebook information (the second codebook information) can reduce the amount of feedback while ensuring the accuracy of the feedback information, thereby saving air interface resources and improving system performance. As an existing technology, a base station broadcasts a common pilot channel (CommonPilotChannel in English, abbreviated as CPICH), and sends HS-PDSCH and HS-SCCH to UEs. The UE obtains the channel state information after performing channel estimation according to the received signal of the CPICH channel.

基于上述方法，可选的，作为另一实施例，所述反馈格式的图案中，包括对应于一个TTI单位内HS-DPCCH信道的两种反馈格式，第一码本信息的反馈格式和第二码本信息的反馈格式，分别用以承载所述第一码本信息和所述第二码本信息，在一个反馈格式的图案中，至少在一个指定TTI上使用所述第一码本信息的反馈格式，至少在一个或多个指定的连续TTI单位上使用所述第二码本信息的反馈格式，其中反馈格式的图案的反馈周期对应于所述第一码本信息的反馈周期，所述第一码本信息的反馈周期比所述第二码本信息的反馈周期长。Based on the above method, optionally, as another embodiment, the pattern of the feedback format includes two feedback formats corresponding to the HS-DPCCH channel in one TTI unit, the feedback format of the first codebook information and the second feedback format of the codebook information The feedback format of the codebook information is used to carry the first codebook information and the second codebook information respectively, and in a pattern of the feedback format, the first codebook information is used at least on one specified TTI a feedback format, at least using the feedback format of the second codebook information on one or more specified continuous TTI units, wherein the feedback period of the pattern of the feedback format corresponds to the feedback period of the first codebook information, the The feedback period of the first codebook information is longer than the feedback period of the second codebook information.

基于上述方法，可选的，作为另一实施例，所述第一码本信息的反馈格式具体包括：所述第一码本信息的反馈格式只包括编码后的所述第一码本的PCI，通过所述第一码本的PCI能够确定所述第一码本的RI指示的所述预编码码本的秩的范围在{1或2}内或在{3或4}内。Based on the above method, optionally, as another embodiment, the feedback format of the first codebook information specifically includes: the feedback format of the first codebook information only includes the encoded PCI of the first codebook , it can be determined through the PCI of the first codebook that the rank range of the precoding codebook indicated by the RI of the first codebook is within {1 or 2} or within {3 or 4}.

基于上述方法，可选的，作为另一实施例，第二码本信息的反馈格式具体包括：如果第一码本RI指示对应所述第一码本信息的反馈周期内的所述预编码码本的秩的范围在{1或2}内时，则所述第二码本信息的反馈格式只包括编码后的所述第二码本的PCI，通过TYPEA类型CQI的具体取值确定所述第二码本的RI所述预编码码本的秩具体为1或具体为2，或如果第一码本的RI指示对应所述第一码本信息的反馈周期内的预编码码本的秩的范围在{3或4}内时，则第二码本信息包括编码后的第二码本的PCI和所述第二码本的RI，且所述第二码本的RI通过1比特表达，用于指示所述预编码码本的秩具体为3还是为4。Based on the above method, optionally, as another embodiment, the feedback format of the second codebook information specifically includes: if the first codebook RI indicates the precoding code within the feedback period corresponding to the first codebook information When the range of the rank of the book is within {1 or 2}, the feedback format of the second codebook information only includes the encoded PCI of the second codebook, and the specific value of the TYPEA type CQI is used to determine the The rank of the precoding codebook in the RI of the second codebook is specifically 1 or specifically 2, or if the RI of the first codebook indicates the rank of the precoding codebook in the feedback cycle corresponding to the first codebook information When the range of is within {3 or 4}, the second codebook information includes the encoded PCI of the second codebook and the RI of the second codebook, and the RI of the second codebook is expressed by 1 bit , used to indicate whether the rank of the precoding codebook is 3 or 4.

或者，基于上述方法，可选的，作为另一实施例，所述第二码本信息的反馈格式具体包括：如果第一码本RI指示对应所述第一码本信息的反馈周期内的预编码码本的秩的范围在{1或2}内时，则第二码本信息包括编码后的第二码本的PCI和第二码本的RI，且所述第二码本的RI通过1比特表达，用于指示所述预编码码本的秩具体为1或为2，或如果第一码本RI指示对应所述第一码本信息的反馈周期内的预编码码本的秩的范围在{3或4}内时，则第二码本信息包括编码后的第二码本的PCI和所述第二码本的RI，且所述第二码本的RI通过1比特表达，用于指示所述预编码码本的秩具体为3还是为4。Or, based on the above method, optionally, as another embodiment, the feedback format of the second codebook information specifically includes: if the first codebook RI indicates a predetermined number within the feedback period corresponding to the first codebook information When the range of the rank of the encoded codebook is within {1 or 2}, the second codebook information includes the encoded PCI of the second codebook and the RI of the second codebook, and the RI of the second codebook is passed through 1-bit expression, used to indicate that the rank of the precoding codebook is specifically 1 or 2, or if the first codebook RI indicates the rank of the precoding codebook in the feedback cycle corresponding to the first codebook information When the range is within {3 or 4}, the second codebook information includes the encoded PCI of the second codebook and the RI of the second codebook, and the RI of the second codebook is expressed by 1 bit, It is used to indicate whether the rank of the precoding codebook is 3 or 4.

上述方法中，作为另一实施例，所述第一码本的PCI和所述第二码本的PCI用于确定信道预编码处理的预编码码本，包括：所述第一码本信息PCI能够确定的第一码本和所述第二码本信息PCI对应的第二码本的乘积作为下行发送时每个TTI上最终使用的预编码码本，所述第一码本的RI指示在对应所述第一码本信息的反馈周期内预编码码本的秩的范围，根据所述第一码本的RI所述第二码本的RI进一步指示出每个第二码本信息的反馈周期内具体的预编码码本的秩。In the above method, as another embodiment, the PCI of the first codebook and the PCI of the second codebook are used to determine a precoding codebook for channel precoding processing, including: the first codebook information PCI The product of the determinable first codebook and the second codebook corresponding to the second codebook information PCI is used as the final precoding codebook used in each TTI during downlink transmission, and the RI of the first codebook indicates that in Corresponding to the rank range of the precoding codebook within the feedback cycle of the first codebook information, according to the RI of the first codebook, the RI of the second codebook further indicates the feedback of each second codebook information The rank of a specific precoding codebook within a period.

或者，基于上述方法，可选的，作为另一实施例，所述第二码本信息的反馈格式具体包括：如果第一码本RI指示对应所述第一码本信息的反馈周期内的预编码码本的秩的范围在{1或2}内时，则第二码本信息包括编码后的第二码本的PCI和第二码本的RI，且所述第二码本的RI通过1比特表达，用于指示所述预编码码本的秩具体为1或为2，或如果第一码本RI指示对应所述第一码本信息的反馈周期内的预编码码本的秩的范围在{3或4}内时，则第二码本信息包括编码后的第二码本的PCI和所述第二码本的RI，且所述第二码本的RI通过2比特表达，用于指示所述预编码码本的秩具体为1至4中具体的一个。Or, based on the above method, optionally, as another embodiment, the feedback format of the second codebook information specifically includes: if the first codebook RI indicates a predetermined number within the feedback period corresponding to the first codebook information When the range of the rank of the encoded codebook is within {1 or 2}, the second codebook information includes the encoded PCI of the second codebook and the RI of the second codebook, and the RI of the second codebook is passed through 1-bit expression, used to indicate that the rank of the precoding codebook is specifically 1 or 2, or if the first codebook RI indicates the rank of the precoding codebook in the feedback cycle corresponding to the first codebook information When the range is within {3 or 4}, the second codebook information includes the encoded PCI of the second codebook and the RI of the second codebook, and the RI of the second codebook is expressed by 2 bits, The rank used to indicate the precoding codebook is specifically one of 1 to 4.

上述方法中，作为另一实施例，所述第一码本的PCI和所述第二码本的PCI用于确定信道预编码处理的最终使用的预编码码本，包括：如果第一码本RI指示对应所述第一码本信息的反馈周期内的预编码码本的秩的范围在{1或2}内时，或者，如果第一码本RI指示对应所述第一码本信息的反馈周期内的预编码码本的秩的范围在{3或4}内，且所述2比特的第二码本RI指示信道的具体秩仍然在{3或4}内时，所述第一码本信息PCI能够确定的第一码本和所述第二码本信息PCI对应的第二码本的乘积为最终使用的预编码码本，所述第一码本的RI指示在对应所述第一码本信息的反馈周期内预编码码本的秩的范围，根据所述第一码本的RI所述第二码本的RI进一步指示出每个第二码本信息的反馈周期内具体的预编码码本的秩；如果第一码本RI指示对应所述第一码本信息的反馈周期内的预编码码本的秩的范围在{3或4}内，且所述2比特的第二码本RI指示信道的具体秩在{1或2}内时，所述预编码码本的秩为第二码本RI具体指示的秩信息，从第一码本前两列中抽取出一列列向量并从第一码本的后两列中也抽取出一列两向量，将抽取出的两列列向量组成新的第一码本，并与第二码本信息包括的PCI对应的预编码矩阵的进行乘积，作为最终的预编码矩阵。In the above method, as another embodiment, the PCI of the first codebook and the PCI of the second codebook are used to determine the final precoding codebook used in the channel precoding process, including: if the first codebook When the RI indicates that the rank range of the precoding codebook in the feedback period corresponding to the first codebook information is within {1 or 2}, or if the first codebook RI indicates that the rank of the precoding codebook corresponding to the first codebook information When the rank range of the precoding codebook in the feedback cycle is within {3 or 4}, and the 2-bit second codebook RI indicates that the specific rank of the channel is still within {3 or 4}, the first The product of the first codebook that can be determined by the codebook information PCI and the second codebook corresponding to the second codebook information PCI is the final precoding codebook used, and the RI of the first codebook indicates that the codebook corresponding to the The rank range of the precoding codebook in the feedback period of the first codebook information, according to the RI of the first codebook and the RI of the second codebook further indicates the specific The rank of the precoding codebook; if the first codebook RI indicates that the range of the rank of the precoding codebook in the feedback cycle corresponding to the first codebook information is within {3 or 4}, and the 2-bit When the second codebook RI indicates that the specific rank of the channel is within {1 or 2}, the rank of the precoding codebook is the rank information specifically indicated by the second codebook RI, which is extracted from the first two columns of the first codebook A column of vectors and a column of two vectors are also extracted from the last two columns of the first codebook, and the extracted two columns of vectors are used to form a new first codebook, and the pre-code corresponding to the PCI included in the second codebook information The product of the coding matrix is used as the final precoding matrix.

或者，可选的，作为另一实施例，所述第二码本信息的反馈格式具体包括：如果第一码本RI指示对应所述第一码本信息的反馈周期内的预编码码本的秩的范围在{1或2}内时，则第二码本信息包括编码后的第二码本的PCI和第二码本的RI，且所述第二码本的RI通过1比特表达，用于指示所述预编码码本的秩具体为1或为2，或如果第一码本RI指示对应所述第一码本信息的反馈周期内的预编码码本的秩的范围在{3或4}内时，则所述反馈格式的图案内包括至少两种第二码本信息反馈格式，第一种第二码本格式和第二种第二码本格式，其中第一种第二码本信息的反馈格式用于指示所述预编码码本的秩具体为3或为4时的第二码本的RI和PCI信息，第二种第二码本信息反馈格式用于指示所述预编码码本的秩具体为1或为2时的第二码本的PCI和RI信息。Or, optionally, as another embodiment, the feedback format of the second codebook information specifically includes: if the first codebook RI indicates the precoding codebook within the feedback period corresponding to the first codebook information When the rank range is within {1 or 2}, the second codebook information includes the encoded PCI of the second codebook and the RI of the second codebook, and the RI of the second codebook is expressed by 1 bit, It is used to indicate that the rank of the precoding codebook is specifically 1 or 2, or if the first codebook RI indicates that the rank range of the precoding codebook in the feedback cycle corresponding to the first codebook information is within {3 or 4}, the pattern of the feedback format includes at least two second codebook information feedback formats, the first second codebook format and the second second codebook format, wherein the first second codebook format The feedback format of the codebook information is used to indicate the RI and PCI information of the second codebook when the rank of the precoding codebook is 3 or 4, and the second second codebook information feedback format is used to indicate the PCI and RI information of the second codebook when the rank of the precoding codebook is specifically 1 or 2.

上述方法中，可选的，作为另一实施例，如果第一码本RI指示对应所述第一码本信息的反馈周期内的预编码码本的秩的范围在{1或2}内时，或者，如果第一码本RI指示对应所述第一码本信息的反馈周期内的预编码码本的秩的范围在{3或4}内，且对应TTI上的反馈格式为第一种第二码本反馈格式时，所述第一码本信息PCI能够确定的第一码本和所述第二码本信息PCI对应的第二码本的乘积为最终使用的预编码码本，所述第一码本的RI指示在对应所述第一码本信息的反馈周期内预编码码本的秩的范围，在该所述范围内所述第二码本的RI进一步指示出每个第二码本信息的反馈周期内具体的预编码码本的秩；如果第一码本RI指示对应所述第一码本信息的反馈周期内的预编码码本的秩的范围在{3或4}内，且对应TTI上的反馈格式为第二种第二码本反馈格式时，所述预编码码本的秩为第二种第二码本反馈格式中具体指示的秩信息，从第一码本前两列中抽取出一列列向量并从第一码本的后两列中也抽取出一列两向量，将抽取出的两列列向量组成新的第一码本，并与第二码本信息包括的PCI对应的预编码矩阵的进行乘积，作为最终的预编码矩阵。In the above method, optionally, as another embodiment, if the first codebook RI indicates that the rank range of the precoding codebook in the feedback period corresponding to the first codebook information is within {1 or 2} , or, if the first codebook RI indicates that the rank range of the precoding codebook in the feedback cycle corresponding to the first codebook information is within {3 or 4}, and the feedback format on the corresponding TTI is the first type In the second codebook feedback format, the product of the first codebook that can be determined by the first codebook information PCI and the second codebook corresponding to the second codebook information PCI is the final precoding codebook used, so The RI of the first codebook indicates the rank range of the precoding codebook within the feedback cycle corresponding to the first codebook information, and the RI of the second codebook within the range further indicates that each The rank of the specific precoding codebook in the feedback period of the second codebook information; if the first codebook RI indicates that the rank of the precoding codebook in the feedback period corresponding to the first codebook information is in the range of {3 or 4 }, and the feedback format on the corresponding TTI is the second second codebook feedback format, the rank of the precoding codebook is the rank information specifically indicated in the second second codebook feedback format, starting from the first A column of column vectors is extracted from the first two columns of the codebook and a column of two vectors is also extracted from the last two columns of the first codebook, and the extracted two columns of column vectors are used to form a new first codebook, and combined with the second codebook The product of the precoding matrix corresponding to the PCI included in this information is used as the final precoding matrix.

图2是本发明第二实施例的信道状态信息20的示意图。FIG. 2 is a schematic diagram of channel state information 20 according to a second embodiment of the present invention.

如图2所示，按照反馈格式的图案（英文为pattern）周期性反馈的信道状态信息20包括ACK/NACK的反馈21、CQI的反馈22、RI的反馈23和PCI的反馈24等。As shown in FIG. 2 , the channel state information 20 periodically fed back according to the pattern of the feedback format (pattern in English) includes ACK/NACK feedback 21 , CQI feedback 22 , RI feedback 23 , and PCI feedback 24 .

由于现有技术中，已有的格式A（英文为TYPEA）的CQI反馈格式满足2个CQI的反馈，并且2个ACK/NACK的反馈也可以复用已有的第一slot的ACK/NACK反馈设计。因此，4BranchMIMO如果使用双码本的技术，HS-DPCCH反馈设计中，CQI的反馈22沿用TYPEA，ACK/NACK的反馈21沿用现有技术，在此基础上引入新的RI和PCI的反馈格式，主要用于RI的反馈23、PCI的反馈24。在基站配置的反馈格式的图案中包含了多种信息。例如，反馈格式的图案的反馈周期，用于指示UE多长时间向基站按照反馈格式的图案发送一次信道状态信息；反馈格式的图案中包括哪些信道状态信息的反馈格式，例如可以包括ACK/NACK、CQI，RI和PCI的反馈格式；每种反馈格式的反馈周期是多少；以及每种反馈格式的具体编码方式是什么等等。In the prior art, the existing CQI feedback format of format A (TYPEA in English) satisfies the feedback of 2 CQIs, and the feedback of 2 ACK/NACKs can also reuse the existing ACK/NACK feedback of the first slot design. Therefore, if 4BranchMIMO uses dual codebook technology, in the HS-DPCCH feedback design, the CQI feedback 22 follows TYPEA, and the ACK/NACK feedback 21 follows the existing technology. On this basis, new RI and PCI feedback formats are introduced. It is mainly used for feedback 23 of RI and feedback 24 of PCI. A variety of information is contained in the pattern of the feedback format configured by the base station. For example, the feedback period of the pattern of the feedback format is used to indicate how often the UE sends the channel state information to the base station according to the pattern of the feedback format; the feedback format of which channel state information is included in the pattern of the feedback format, for example, may include ACK/NACK , CQI, RI and PCI feedback formats; what is the feedback period of each feedback format; and what is the specific encoding method of each feedback format, etc.

下述本发明实施例的反馈格式的图案中省略对ACK/NACK和CQI的反馈格式的说明，以突出本发明实施例中RI和PCI的反馈格式。反馈格式的图案可以由网络侧例如无线网络控制器（英文为RadioNetworkController，缩写为RNC）配置的RRC（英文为RadioResourceControl，中文为无线资源控制）信令携带。基站从RNC获取携带反馈格式的图案的RRC信令后，向UE转发。由于本发明实施例采用双码本技术，信道状态信息包括第一码本信息和第二码本信息，第一码本信息包括第一码本的PCI和第一码本的RI，第二码本信息包括第二码本的PCI和第二码本的RI，第一码本的PCI和第二码本的PCI用于确定信道预编码处理的最终使用的预编码码本，第一码本的RI和第二码本的RI用于确定预编码码本的秩。上述第一码本信息和第二码本信息中包括的信息例如PCI和RI的反馈方式可以是显式或隐式。基于信息的显示反馈方式可以直接获知该信息，基于信息的隐式反馈方式可以通过其他已知信息可以间接获知该信息，而不需通过显式的比特反馈。反馈格式的图案中包括对应于一个TTI单位内HS-DPCCH信道的两种反馈格式，第一码本信息的反馈格式和第二码本信息的反馈格式，分别用以承载第一码本信息和第二码本信息，在一个反馈格式的图案中，可以至少在一个指定TTI上使用第一码本信息的反馈格式，至少在一个或多个指定的连续TTI单位上使用第二码本信息的反馈格式，其中反馈格式的图案的反馈周期对应于第一码本信息的反馈周期，第一码本信息的反馈周期比第二码本信息的反馈周期长。基站通过上述配置反馈格式的图案的方法，与现有技术中直接反馈单一预编码码本的方式相比，可以充分利用双码本技术，提高反馈精度且减少反馈量。反馈格式的图案的反馈周期对应于第一码本信息的反馈周期，可以包括反馈格式的图案的长度是第一码本信息的反馈周期的整数倍。当整数倍为1时，反馈格式的图案的反馈周期等于第一码本信息的反馈周期。The description of the feedback format of ACK/NACK and CQI is omitted in the pattern of the feedback format in the following embodiment of the present invention, so as to highlight the feedback format of RI and PCI in the embodiment of the present invention. The pattern of the feedback format may be carried by RRC (RadioResourceControl in English, Radio Resource Control in Chinese) signaling configured by the network side, for example, a Radio Network Controller (RadioNetworkController in English, RNC for short). After acquiring the RRC signaling carrying the pattern of the feedback format from the RNC, the base station forwards it to the UE. Since the embodiment of the present invention adopts the dual codebook technology, the channel state information includes the first codebook information and the second codebook information, the first codebook information includes the PCI of the first codebook and the RI of the first codebook, and the second codebook information This information includes the PCI of the second codebook and the RI of the second codebook, the PCI of the first codebook and the PCI of the second codebook are used to determine the final precoding codebook used for channel precoding processing, and the first codebook The RI of and the RI of the second codebook are used to determine the rank of the precoding codebook. The feedback manner of information included in the first codebook information and the second codebook information, such as PCI and RI, may be explicit or implicit. The information-based display feedback method can directly know the information, and the information-based implicit feedback method can indirectly know the information through other known information without explicit bit feedback. The pattern of the feedback format includes two feedback formats corresponding to the HS-DPCCH channel in one TTI unit, the feedback format of the first codebook information and the feedback format of the second codebook information, which are used to carry the first codebook information and the feedback format of the second codebook information respectively. The second codebook information, in a feedback format pattern, can use the feedback format of the first codebook information at least on one specified TTI, and use the second codebook information on at least one or more specified continuous TTI units The feedback format, wherein the feedback period of the pattern of the feedback format corresponds to the feedback period of the first codebook information, and the feedback period of the first codebook information is longer than the feedback period of the second codebook information. Compared with the way of directly feeding back a single precoding codebook in the prior art, the base station can make full use of the double codebook technology by using the above method of configuring the pattern of the feedback format, improve the feedback accuracy and reduce the feedback amount. The feedback period of the pattern of the feedback format corresponds to the feedback period of the first codebook information, and the length of the pattern that may include the feedback format is an integer multiple of the feedback period of the first codebook information. When the integer multiple is 1, the feedback period of the pattern of the feedback format is equal to the feedback period of the first codebook information.

接下来的实施例中，出于简洁，反馈格式中省略了ACK/NACK的反馈21和CQI的反馈22的反馈格式等反馈内容的示意，仅示出包括RI的反馈23和PCI的反馈24的具体反馈格式的图案。由于本发明实施例的技术中使用第一码本和第二码本，所以RI的反馈23和PCI的反馈24也分别用于对应不同的码本，在上下文中，分别称为第一码本信息31和第二码本信息32。第一码本信息31包括第一码本的PCI和第一码本的RI，第二码本信息32包括第二码本的PCI和第二码本的RI。在第一码本信息中，第一码本的PCI和第一码本的RI可以共同编码。在第二码本信息中，第二码本的PCI和第二码本的RI可以共同编码。In the following embodiments, for the sake of brevity, the feedback format such as the feedback format of ACK/NACK feedback 21 and CQI feedback 22 is omitted, and only the RI feedback 23 and PCI feedback 24 are shown. A pattern for specific feedback formats. Since the first codebook and the second codebook are used in the technology of the embodiment of the present invention, the feedback 23 of RI and the feedback 24 of PCI are also respectively used to correspond to different codebooks, and in the context, they are respectively referred to as the first codebook Information 31 and second codebook information 32. The first codebook information 31 includes the PCI of the first codebook and the RI of the first codebook, and the second codebook information 32 includes the PCI of the second codebook and the RI of the second codebook. In the first codebook information, the PCI of the first codebook and the RI of the first codebook may be coded together. In the second codebook information, the PCI of the second codebook and the RI of the second codebook may be coded together.

目前，根据现有技术的码本设计，第一码本RI确定的预编码码本的秩的范围在{1或2}内和{3或4}内时，预编码矩阵的维数是不一样的。预编码码本的秩的范围在{1或2}内时，第一码本是4x2矩阵，而预编码码本的秩的范围在{3或4}内时，第一码本是4x4矩阵。一般情况下，第二码本的秩信息应落在第一码本的秩信息范围内。利用这一特点，我们实际上反馈了第一码本的PCI时就同时隐式反馈了第一码本的RI，即区分了预编码码本的秩在{1或2}内还是在{3或4}内。举例来说，当反馈的第一码本的PCI取值为0~X范围内，则第一码本的PCI对应于预编码码本的秩的范围在{1或2}内的第一码本，当反馈的第一码本的PCI取值在X~Y范围内，则第一码本的PCI对应于预编码码本的秩范围在{3或4}内的第一码本，其中X，Y为正整数，且Y为最大的PCI取值。因此，可以基于上述特性，在第一码本信息的反馈格式中只对第一码本的PCI进行编码，减少了第一码本的RI反馈bit数。该第一码本信息的反馈格式称为TYPEC，适用本发明下述的实施例。At present, according to the codebook design of the prior art, when the rank range of the precoding codebook determined by the first codebook RI is within {1 or 2} and within {3 or 4}, the dimension of the precoding matrix is not the same. When the rank range of the precoding codebook is within {1 or 2}, the first codebook is a 4x2 matrix, and when the rank range of the precoding codebook is within {3 or 4}, the first codebook is a 4x4 matrix . Generally, the rank information of the second codebook should fall within the range of the rank information of the first codebook. Taking advantage of this feature, when we actually fed back the PCI of the first codebook, we implicitly fed back the RI of the first codebook at the same time, that is, to distinguish whether the rank of the precoded codebook is within {1 or 2} or within {3 or within 4}. For example, when the PCI value of the first codebook fed back is in the range of 0~X, the PCI of the first codebook corresponds to the first code whose rank range of the precoding codebook is within {1 or 2} This, when the PCI value of the first codebook fed back is in the range of X~Y, then the PCI of the first codebook corresponds to the first codebook whose rank range of the precoding codebook is within {3 or 4}, where X and Y are positive integers, and Y is the maximum PCI value. Therefore, based on the above characteristics, only the PCI of the first codebook is encoded in the feedback format of the first codebook information, reducing the number of RI feedback bits of the first codebook. The feedback format of the first codebook information is called TYPEC, which is applicable to the following embodiments of the present invention.

图3是本发明第三实施例的一种反馈格式的图案30的示意图。为方便说明，在图3中举例示出了两个连续的HS-DPCCH反馈周期33和34，每一个反馈周期中包括对应于一个TTI单位内HS-DPCCH信道的两种反馈格式：第一码本信息的反馈格式和第二码本信息的反馈格式。FIG. 3 is a schematic diagram of a pattern 30 of a feedback format according to a third embodiment of the present invention. For the convenience of illustration, two consecutive HS-DPCCH feedback cycles 33 and 34 are shown in Fig. 3, and each feedback cycle includes two feedback formats corresponding to the HS-DPCCH channel in one TTI unit: the first code The feedback format of this information and the feedback format of the second codebook information.

一个反馈格式的图案30的反馈周期中包括一个对应于一个TTI单位的第一码本信息31和多个分别对应于一个TTI单位的连续的第二码本信息32。第一码本信息31采用第一码本信息的反馈格式进行反馈，第二码本信息32采用第二码本信息的反馈格式进行反馈。虽然图案30中示出了反馈周期中一个TTI单位的反馈格式定义为第一码本信息的反馈格式，剩余的TTI的反馈格式定义为第二码本信息的反馈格式，但本发明对此仅为示例。通常，由于第一码本是长期码本，第二码本是短期码本，为了提高反馈精度，因此第二码本信息的反馈周期要比第一码本信息的反馈周期短。由网络侧例如RNC决定具体配置的反馈格式的图案中有多少个TTI单位用于反馈第一码本信息，且反馈周期是多少；又有多少个TTI单元用于反馈第二码本信息，且反馈周期是多少。A feedback period of a pattern 30 of a feedback format includes one piece of first codebook information 31 corresponding to one TTI unit and multiple pieces of continuous second codebook information 32 respectively corresponding to one TTI unit. The first codebook information 31 is fed back in the feedback format of the first codebook information, and the second codebook information 32 is fed back in the feedback format of the second codebook information. Although the pattern 30 shows that the feedback format of one TTI unit in the feedback cycle is defined as the feedback format of the first codebook information, and the feedback format of the remaining TTIs is defined as the feedback format of the second codebook information, the present invention only for example. Usually, since the first codebook is a long-term codebook and the second codebook is a short-term codebook, in order to improve feedback accuracy, the feedback period of the second codebook information is shorter than that of the first codebook information. The network side, such as the RNC, decides how many TTI units in the pattern of the specifically configured feedback format are used to feed back the first codebook information, and what the feedback cycle is; how many TTI units are used to feed back the second codebook information, and What is the feedback cycle.

通过第一码本的PCI获知第一码本的RI包括两种可能，因此反馈第二码本信息时存在以下两种可能的情况。There are two possibilities for obtaining the RI of the first codebook through the PCI of the first codebook. Therefore, there are the following two possible situations when feeding back the information of the second codebook.

如果第一码本的RI指示对应第一码本信息的反馈周期内的预编码码本的秩的范围在{1或2}内时，则第二码本信息的反馈格式中只需要包括编码后第二码本的PCI，而通过TYPEA类型CQI的具体取值可以确定预编码码本的秩具体为1或具体为2，即隐性方式获知第二码本的RI指示预编码码本的秩具体为1或具体为2。由于第二码本的RI通过隐性方式可以获知，无需通过编码反馈。举例来说，TYPEA类型的CQI的具体取值为0~M范围内，则预编码码本的秩为1，当取值在M~N范围内，预编码码本的秩为{2、3或4}，此时已经确定第一码本指示的秩的范围在{1或2}内，则可以最终确定所述预编码码本的秩具体为1或具体为2。其中M和N为正整数，N为CQI可取的最大值。为方便说明，第一码本信息和第二码本信息的反馈格式通过不同的填充方式表示。上述第二码本信息的反馈格式称为TYPED（类型D）。If the RI of the first codebook indicates that the rank range of the precoding codebook in the feedback period corresponding to the first codebook information is within {1 or 2}, the feedback format of the second codebook information only needs to include the encoding PCI of the second codebook, and the specific value of the TYPEA type CQI can determine that the rank of the precoding codebook is specifically 1 or 2, that is, knowing the RI of the second codebook in an implicit way indicates the value of the precoding codebook The rank is specifically 1 or specifically 2. Since the RI of the second codebook can be known implicitly, no coding feedback is required. For example, if the specific value of the CQI of the TYPEA type is in the range of 0~M, the rank of the precoding codebook is 1; when the value is in the range of M~N, the rank of the precoding codebook is {2, 3 or 4}, at this time it has been determined that the range of the rank indicated by the first codebook is within {1 or 2}, then it may be finally determined that the rank of the precoding codebook is specifically 1 or specifically 2. Wherein, M and N are positive integers, and N is the maximum value that the CQI can take. For convenience of description, the feedback formats of the first codebook information and the second codebook information are represented by different padding methods. The above-mentioned feedback format of the second codebook information is called TYPED (type D).

如果第一码本的RI指示对应第一码本信息的反馈周期内的预编码码本的秩的范围在{3或4}内时，通过TYPEA类型的CQI无法确定预编码码本的秩，则第二码本信息不仅包括第二码本的PCI还需要包括所述第二码本的RI，且所述第二码本的RI通过1比特表达，用于指示所述预编码码本的秩具体为3还是为4。上述第二码本信息的反馈格式称为TYPEG。If the RI of the first codebook indicates that the range of the rank of the precoding codebook in the feedback cycle corresponding to the first codebook information is within {3 or 4}, the rank of the precoding codebook cannot be determined through the CQI of the TYPEA type, Then the second codebook information not only includes the PCI of the second codebook but also needs to include the RI of the second codebook, and the RI of the second codebook is expressed by 1 bit, which is used to indicate the Whether the rank is specifically 3 or 4. The feedback format of the above second codebook information is called TYPEG.

在本发明实施例中，第二码本信息中，第二码本的PCI可以是预编码码本的秩为1至4任一时第二码本所对应的PCI。根据以上的反馈格式，在预编码码本的秩为1或者2时，由于不用反馈第二码本的RI，第二码本信息中可用于反馈PCI的比特数相比于秩为3或者4时可用于反馈PCI的比特数要多1bit，这就意味着在本方案的设计下，可用于反馈的预编码码本的秩为1或2时的第二码本的PCI相比于预编码码本的秩为3或4时的第二码本的PCI的数目多出一倍，也就是说，前者比后者具有更好地量化精度。可选的，一个反馈周期内，以反馈格式的图案30反馈的信道状态信息包括至少一个第一码本信息31和多个第二码本信息32。所有第二码本信息的反馈格式均相同，或者为TYPED，或者为TYPEG，反馈的内容对应TTI的不同而不同。为方便说明，反馈格式的图案30中两个反馈周期示例性用于指示两个TTI对应的不同情况下的第二码本信息的反馈格式。In the embodiment of the present invention, in the second codebook information, the PCI of the second codebook may be the PCI corresponding to the second codebook when the rank of the precoding codebook is any one of 1 to 4. According to the above feedback format, when the rank of the precoding codebook is 1 or 2, since the RI of the second codebook is not fed back, the number of bits in the second codebook information that can be used for feedback PCI is compared with rank 3 or 4 The number of bits that can be used for feedback PCI is 1 bit more, which means that under the design of this scheme, the PCI of the second codebook when the rank of the precoding codebook that can be used for feedback is 1 or 2 is compared to the PCI of the precoding When the rank of the codebook is 3 or 4, the number of PCIs of the second codebook is doubled, that is to say, the former has better quantization accuracy than the latter. Optionally, within one feedback cycle, the channel state information fed back in the pattern 30 of the feedback format includes at least one piece of first codebook information 31 and multiple pieces of second codebook information 32 . The feedback format of all the second codebook information is the same, or is TYPED, or is TYPEG, and the feedback content is different corresponding to different TTIs. For convenience of description, the two feedback cycles in the pattern 30 of the feedback format are exemplarily used to indicate the feedback format of the second codebook information in different situations corresponding to two TTIs.

本发明实施例中，基站接收按照一定反馈格式的图案周期性反馈的携带用于确定最终预编码码本的双码本的信道状态信息，通过上述这种长期码本信息（第一码本信息）和短期码本信息（第二码本信息）相结合的反馈方式，可以在保证反馈信息精度的前提下减小反馈量，从而节省空口资源和提高系统性能。In the embodiment of the present invention, the base station receives the channel state information carrying the dual codebook used to determine the final precoding codebook that is periodically fed back according to a pattern of a certain feedback format, and through the above-mentioned long-term codebook information (the first codebook information ) and short-term codebook information (the second codebook information) can reduce the amount of feedback while ensuring the accuracy of the feedback information, thereby saving air interface resources and improving system performance.

可选的，图4是本发明第四实施例的另一种反馈格式的图案40的示意图。反馈格式的图案40与反馈格式的图案30的不同在于所配置的第二码本信息的反馈格式不同。Optionally, FIG. 4 is a schematic diagram of another feedback format pattern 40 according to the fourth embodiment of the present invention. The difference between the feedback format pattern 40 and the feedback format pattern 30 lies in that the configured feedback formats of the second codebook information are different.

由于通过第一码本的PCI获知第一码本的RI包括两种可能，因此反馈第二码本信息时存在以下两种可能的情况。Since there are two possibilities for obtaining the RI of the first codebook through the PCI of the first codebook, there are the following two possible situations when feeding back the information of the second codebook.

如果第一码本RI指示对应所述第一码本信息的反馈周期内的预编码码本的秩的范围在{1或2}内时，则第二码本信息包括编码后的第二码本的PCI和第二码本的RI，且所述第二码本的RI通过1比特表达，用于指示预编码码本的秩具体为1或为2。上述第二码本的反馈格式称为TYPEE。If the first codebook RI indicates that the rank range of the precoding codebook in the feedback period corresponding to the first codebook information is within {1 or 2}, the second codebook information includes the encoded second code The PCI of the second codebook and the RI of the second codebook, and the RI of the second codebook is expressed by 1 bit, and is used to indicate that the rank of the precoding codebook is 1 or 2. The feedback format of the above-mentioned second codebook is called TYPEE.

或者，如果第一码本RI指示对应所述第一码本信息的反馈周期内的预编码码本的秩的范围在{3或4}内时，则第二码本信息包括编码后的第二码本的PCI和所述第二码本的RI，且所述第二码本的RI通过1比特表达，用于指示预编码码本的秩具体为3还是为4。上述第二码本的反馈格式仍为TYPEG。Or, if the first codebook RI indicates that the rank range of the precoding codebook in the feedback period corresponding to the first codebook information is within {3 or 4}, the second codebook information includes the encoded The PCI of the two codebooks and the RI of the second codebook, and the RI of the second codebook is expressed by 1 bit, which is used to indicate whether the rank of the precoding codebook is 3 or 4. The feedback format of the above-mentioned second codebook is still TYPEG.

一个反馈周期中，以反馈格式的图案40反馈的信道状态信息包括至少一个第一码本信息31和多个第二码本信息32。所有第二码本信息的反馈格式均相同，或者为TYPEE，或者为TYPEG，反馈的内容对应TTI的不同而不同。为方便说明，反馈格式的图案40中两个反馈周期示例性用于指示两个TTI对应的不同情况下的第二码本信息的反馈格式。In one feedback cycle, the channel state information fed back in the pattern 40 of the feedback format includes at least one piece of first codebook information 31 and multiple pieces of second codebook information 32 . The feedback format of all the second codebook information is the same, or is TYPEE, or is TYPEG, and the feedback content is different corresponding to different TTIs. For convenience of description, the two feedback cycles in the pattern 40 of the feedback format are exemplarily used to indicate the feedback format of the second codebook information in different situations corresponding to two TTIs.

基站接收到基于反馈格式的图案30或40发送的第一码本信息和第二码本信息后，进一步通过第一码本信息的PCI确定的第一码本和第二码本信息的PCI确定的第二码本的乘积获得下行发送时每个TTI上最终使用的预编码码本。第一码本的RI指示在对应的第一码本信息的反馈周期内预编码码本的秩的范围，在上述范围内，获取的第二码本的RI进一步指示出每个第二码本信息的反馈周期内具体的预编码码本的秩。After the base station receives the first codebook information and the second codebook information sent based on the pattern 30 or 40 of the feedback format, the first codebook and the second codebook information determined by the PCI of the first codebook information are further determined The product of the second codebook of is to obtain the precoding codebook finally used in each TTI during downlink transmission. The RI of the first codebook indicates the range of the rank of the precoded codebook within the feedback cycle of the corresponding first codebook information. Within the above range, the acquired RI of the second codebook further indicates that each second codebook The rank of the specific precoding codebook in the information feedback cycle.

本发明实施例中，基站接收按照一定反馈格式的图案周期性反馈的携带用于确定最终预编码码本的双码本的信道状态信息，通过上述这种长期码本信息（第一码本信息）和短期码本信息（第二码本信息）相结合的反馈方式，可以在保证反馈信息精度的前提下减小反馈量，从而节省空口资源和提高系统性能。In the embodiment of the present invention, the base station receives the channel state information carrying the dual codebook used to determine the final precoding codebook that is periodically fed back according to a pattern of a certain feedback format, and through the above-mentioned long-term codebook information (the first codebook information ) and short-term codebook information (the second codebook information) can reduce the amount of feedback while ensuring the accuracy of the feedback information, thereby saving air interface resources and improving system performance.

可选的，图5是本发明第五实施例的另一种反馈格式的图案50的示意图。反馈格式的图案50与反馈格式的图案30或40的不同在于所配置的第二码本信息的反馈格式不同。Optionally, FIG. 5 is a schematic diagram of another feedback format pattern 50 according to the fifth embodiment of the present invention. The difference between the pattern 50 of the feedback format and the pattern 30 or 40 of the feedback format lies in that the configured feedback format of the second codebook information is different.

由于通过第一码本的PCI获知第一码本的RI包括两种可能，因此反馈第二码本信息时存在以下两种可能的情况。Since there are two possibilities for obtaining the RI of the first codebook through the PCI of the first codebook, there are the following two possible situations when feeding back the information of the second codebook.

如果第一码本的RI指示对应所述第一码本信息的反馈周期内的预编码码本的秩的范围在{1或2}内时，则第二码本信息包括编码后的第二码本的PCI和第二码本的RI，且所述第二码本的RI通过1比特表达，用于指示预编码码本的秩具体为1或为2。上述第二码本的反馈格式仍为TYPEE。或者，如果第一码本的RI指示对应第一码本信息的反馈周期内的预编码码本的秩的范围在{3或4}内时，则第二码本信息包括编码后的第二码本的PCI和第二码本的RI，且第二码本的RI通过2比特表达，用于指示预编码码本的秩具体为1至4中具体的一个。上述第二码本的反馈格式称为TYPEF。If the RI of the first codebook indicates that the rank range of the precoding codebook in the feedback period corresponding to the first codebook information is within {1 or 2}, the second codebook information includes the encoded second The PCI of the codebook and the RI of the second codebook, and the RI of the second codebook is expressed by 1 bit, which is used to indicate that the rank of the precoding codebook is 1 or 2. The feedback format of the above-mentioned second codebook is still TYPEE. Or, if the RI of the first codebook indicates that the rank range of the precoded codebook in the feedback cycle corresponding to the first codebook information is within {3 or 4}, the second codebook information includes the encoded second The PCI of the codebook and the RI of the second codebook, and the RI of the second codebook is expressed by 2 bits, and is used to indicate that the rank of the precoding codebook is specifically one of 1 to 4. The feedback format of the above-mentioned second codebook is called TYPEF.

一个反馈周期中，以反馈格式的图案50反馈的信道状态信息包括至少一个第一码本信息31和多个第二码本信息32。所有第二码本信息的反馈格式均相同，或者为TYPEE，或者为TYPEF，反馈的内容对应TTI的不同而不同。为方便说明，反馈格式的图案40中两个反馈周期示例性用于指示两个TTI对应的不同情况下的第二码本信息的反馈格式。In one feedback cycle, the channel state information fed back in the pattern 50 of the feedback format includes at least one piece of first codebook information 31 and multiple pieces of second codebook information 32 . The feedback format of all the second codebook information is the same, or is TYPEE, or is TYPEF, and the feedback content is different corresponding to different TTIs. For convenience of description, the two feedback cycles in the pattern 40 of the feedback format are exemplarily used to indicate the feedback format of the second codebook information in different situations corresponding to two TTIs.

基站接收到基于反馈格式的图案50发送的第一码本信息和第二码本信息后，进一步通过第一码本信息的PCI确定的第一码本和第二码本信息的PCI确定的第二码本获取最终的预编码码本。After receiving the first codebook information and the second codebook information sent based on the pattern 50 of the feedback format, the base station further uses the first codebook determined by the PCI of the first codebook information and the first codebook determined by the PCI of the second codebook information. The second codebook obtains the final precoding codebook.

如果第一码本的RI指示对应第一码本信息的反馈周期内的预编码码本的秩的范围在{1或2}内时，或者，如果第一码本的RI指示对应第一码本信息的反馈周期内的预编码码本的秩的范围在{3或4}内，且2比特的第二码本RI指示信道的具体秩仍然在{3或4}内时，第一码本信息PCI确定的第一码本和第二码本信息PCI对应的第二码本的乘积为最终使用的预编码码本，第一码本的RI指示在对应第一码本信息的反馈周期内预编码码本的秩的范围，在该范围内第二码本的RI进一步指示出每个第二码本信息的反馈周期内具体的预编码码本的秩。If the RI of the first codebook indicates that the rank range of the precoding codebook in the feedback period corresponding to the first codebook information is within {1 or 2}, or if the RI of the first codebook indicates that the rank of the precoding codebook corresponding to the first codebook When the rank range of the precoding codebook in the feedback cycle of this information is within {3 or 4}, and the 2-bit second codebook RI indicates that the specific rank of the channel is still within {3 or 4}, the first code The product of the first codebook determined by this information PCI and the second codebook corresponding to the second codebook information PCI is the final precoding codebook used, and the RI of the first codebook indicates that the feedback cycle corresponding to the first codebook information The rank range of the inner precoding codebook, within the range, the RI of the second codebook further indicates the specific rank of the precoding codebook in each second codebook information feedback period.

如果第一码本的RI指示对应第一码本信息的反馈周期内的预编码码本的秩的范围在{3或4}内，且2比特的第二码本RI指示信道的具体秩在{1或2}内时，预编码码本的秩为第二码本RI具体指示的秩信息，从第一码本前两列中抽取出一列列向量并从第一码本的后两列中也抽取出一列两向量，将抽取出的两列列向量组成新的第一码本，并与第二码本信息包括的PCI对应的预编码码本进行乘积，作为最终的预编码码本。If the RI of the first codebook indicates that the rank range of the precoding codebook in the feedback cycle corresponding to the first codebook information is within {3 or 4}, and the 2-bit second codebook RI indicates that the specific rank of the channel is within When it is within {1 or 2}, the rank of the precoding codebook is the rank information specifically indicated by the second codebook RI, and a column vector is extracted from the first two columns of the first codebook and extracted from the last two columns of the first codebook A column of two vectors is also extracted, and the extracted two column vectors form a new first codebook, and are multiplied with the precoding codebook corresponding to the PCI included in the second codebook information, as the final precoding codebook .

本发明实施例中，基站接收按照一定反馈格式的图案周期性反馈的携带用于确定最终预编码码本的双码本的信道状态信息，通过上述这种长期码本信息（第一码本信息）和短期码本信息（第二码本信息）相结合的反馈方式，可以在保证反馈信息精度的前提下减小反馈量，从而节省空口资源和提高系统性能。In the embodiment of the present invention, the base station receives the channel state information carrying the dual codebook used to determine the final precoding codebook that is periodically fed back according to a pattern of a certain feedback format, and through the above-mentioned long-term codebook information (the first codebook information ) and short-term codebook information (the second codebook information) can reduce the amount of feedback while ensuring the accuracy of the feedback information, thereby saving air interface resources and improving system performance.

可选的，图6是本发明第六实施例的另一种反馈格式的图案60的示意图。反馈格式的图案60与反馈格式的图案30、40或50的不同在于所配置的第二码本信息的反馈格式不同。Optionally, FIG. 6 is a schematic diagram of another feedback format pattern 60 according to the sixth embodiment of the present invention. The difference between the pattern 60 of the feedback format and the pattern 30, 40 or 50 of the feedback format lies in that the configured feedback format of the second codebook information is different.

由于通过第一码本的PCI获知第一码本的RI包括两种可能，因此反馈第二码本信息时存在以下两种可能的情况。Since there are two possibilities for obtaining the RI of the first codebook through the PCI of the first codebook, there are the following two possible situations when feeding back the information of the second codebook.

如果第一码本的RI指示对应第一码本信息的反馈周期内的预编码码本的秩的范围在{1或2}内时，则第二码本信息包括编码后的第二码本的PCI和第二码本的RI，且第二码本的RI通过1比特表达，用于指示预编码码本的秩具体为1或为2。上述第二码本的反馈格式仍为TYPEE。此时，参考图6的第二反馈周期，以反馈格式的图案60反馈的信道状态信息包括至少一个第一码本信息31和多个第二码本信息32。第二码本信息中所有第二码本信息的反馈格式均相同为TYPEE。If the RI of the first codebook indicates that the rank range of the precoded codebook in the feedback period corresponding to the first codebook information is within {1 or 2}, the second codebook information includes the encoded second codebook The PCI of the second codebook and the RI of the second codebook, and the RI of the second codebook is expressed by 1 bit, which is used to indicate that the rank of the precoding codebook is 1 or 2. The feedback format of the above-mentioned second codebook is still TYPEE. At this time, referring to the second feedback cycle in FIG. 6 , the channel state information fed back in the pattern 60 of the feedback format includes at least one first codebook information 31 and multiple second codebook information 32 . The feedback format of all second codebook information in the second codebook information is the same as TYPEE.

如果第一码本的RI指示对应第一码本信息的反馈周期内的预编码码本的秩的范围在{3或4}内时，则反馈格式图案内至少包括两种第二码本信息反馈格式，第一种第二码本格式和第二种第二码本格式，其中第一种第二码本信息反馈格式例如TYPEG用于指示预编码码本的秩具体为3或为4时的第二码本RI和PCI信息，第二种第二码本信息反馈格式例如TYPEE用于指示预编码码本的秩具体为1或为2时的第二码本的PCI和RI信息。此时，参考图6的第一反馈周期，以反馈格式的图案60反馈的信道状态信息包括至少一个第一码本信息31和多个第二码本信息32。多个第二码本信息中的一部分通过第一种反馈格式反馈，至少还有一部分通过第二种反馈格式反馈。图6中第一反馈周期中第二码本信息的反馈格式包括两种，TYPEE和TYPEG，用于支持秩回退。秩回退指当基站没有足够的数据需要发送时，例如虽然在信道上适合于用秩为3或为4，但此时可以用秩为1或秩为2进行数据发送。参考图6，在上述实施例方案中，支持例如从第一反馈周期中指示的预编码码本的秩具体为3或为4时回退到第二反馈周期中指示的预编码码本的秩具体为1或为2。随着技术的发展，当预编码码本的秩允许大于两层甚至4层时，该方法支持更灵活的数据发送方式。If the RI of the first codebook indicates that the rank range of the precoding codebook in the feedback cycle corresponding to the first codebook information is within {3 or 4}, then the feedback format pattern includes at least two kinds of second codebook information Feedback format, the first second codebook format and the second second codebook format, wherein the first second codebook information feedback format such as TYPEG is used to indicate that the rank of the precoding codebook is 3 or 4 The RI and PCI information of the second codebook, the second second codebook information feedback format such as TYPEE is used to indicate the PCI and RI information of the second codebook when the rank of the precoding codebook is 1 or 2. At this time, referring to the first feedback cycle in FIG. 6 , the channel state information fed back in the pattern 60 of the feedback format includes at least one piece of first codebook information 31 and multiple pieces of second codebook information 32 . Part of the plurality of second codebook information is fed back through the first feedback format, and at least part of it is fed back through the second feedback format. The feedback format of the second codebook information in the first feedback period in FIG. 6 includes two types, TYPEE and TYPEG, which are used to support rank back-off. Rank back-off refers to when the base station does not have enough data to send, for example, although the channel is suitable for rank 3 or 4, at this time, rank 1 or rank 2 can be used for data transmission. Referring to Fig. 6, in the above-mentioned embodiment solution, for example, when the rank of the precoding codebook indicated in the first feedback cycle is specifically 3 or 4, it is supported to fall back to the rank of the precoding codebook indicated in the second feedback cycle Specifically 1 or 2. With the development of technology, when the rank of the precoding codebook is allowed to be greater than two layers or even four layers, this method supports a more flexible data transmission mode.

基站接收到基于反馈格式的图案60发送的第一码本信息和第二码本信息后，进一步通过第一码本信息的PCI确定的第一码本和第二码本信息的PCI确定的第二码本获取最终的预编码码本。After receiving the first codebook information and the second codebook information sent based on the pattern 60 of the feedback format, the base station further uses the first codebook determined by the PCI of the first codebook information and the first codebook determined by the PCI of the second codebook information. The second codebook obtains the final precoding codebook.

如果第一码本的RI指示对应第一码本信息的反馈周期内的预编码码本的秩的范围在{1或2}内时，或者，如果第一码本的RI指示对应第一码本信息的反馈周期内的预编码码本的秩的范围在{3或4}内，且对应TTI上的反馈格式为第一种第二码本反馈格式时，第一码本信息PCI确定的第一码本和第二码本信息PCI对应的第二码本的乘积为最终使用的预编码码本，第一码本的RI指示在对应第一码本信息的反馈周期内预编码码本的秩的范围，在该范围内第二码本的RI进一步指示出每个第二码本信息的反馈周期内具体的预编码码本的秩;If the RI of the first codebook indicates that the rank range of the precoding codebook in the feedback period corresponding to the first codebook information is within {1 or 2}, or if the RI of the first codebook indicates that the rank of the precoding codebook corresponding to the first codebook The range of the rank of the precoding codebook in the feedback period of this information is within {3 or 4}, and the feedback format on the corresponding TTI is the first type and the second codebook feedback format, the first codebook information PCI determines The product of the first codebook and the second codebook corresponding to the second codebook information PCI is the final precoding codebook, and the RI of the first codebook indicates that the precoding codebook is within the feedback cycle corresponding to the first codebook information The rank range of the second codebook within this range further indicates the rank of the specific precoding codebook in the feedback period of each second codebook information;

如果第一码本的RI指示对应第一码本信息的反馈周期内的预编码码本的秩的范围在{3或4}内，且对应TTI上的反馈格式为第二种第二码本反馈格式时，预编码码本的秩为第二种第二码本反馈格式中具体指示的秩信息，从第一码本前两列中抽取出一列列向量并从第一码本的后两列中也抽取出一列两向量，将抽取出的两列列向量组成新的第一码本，并与第二码本信息包括的PCI对应的预编码码本的进行乘积，作为最终的预编码码本。If the RI of the first codebook indicates that the rank range of the precoding codebook in the feedback cycle corresponding to the first codebook information is within {3 or 4}, and the feedback format on the corresponding TTI is the second type of the second codebook In the feedback format, the rank of the precoding codebook is the rank information specifically indicated in the second codebook feedback format of the second type, and a column of column vectors is extracted from the first two columns of the first codebook and extracted from the last two columns of the first codebook. A column of two vectors is also extracted from the column, and the extracted two column vectors form a new first codebook, and the product of the precoding codebook corresponding to the PCI included in the second codebook information is used as the final precoding codebook.

本发明实施例中，基站接收按照一定反馈格式的图案周期性反馈的携带用于确定最终预编码码本的双码本的信道状态信息，通过上述这种长期码本信息（第一码本信息）和短期码本信息（第二码本信息）相结合的反馈方式，可以在保证反馈信息精度的前提下减小反馈量，从而节省空口资源和提高系统性能。In the embodiment of the present invention, the base station receives the channel state information carrying the dual codebook used to determine the final precoding codebook that is periodically fed back according to a pattern of a certain feedback format, and through the above-mentioned long-term codebook information (the first codebook information ) and short-term codebook information (the second codebook information) can reduce the amount of feedback while ensuring the accuracy of the feedback information, thereby saving air interface resources and improving system performance.

图7是本发明第七实施例的HS-DPCCH的另一反馈方法70的示意框图。方法70可以由终端侧，例如用户设备执行，包括以下内容。Fig. 7 is a schematic block diagram of another HS-DPCCH feedback method 70 according to the seventh embodiment of the present invention. The method 70 may be executed by a terminal side, such as a user equipment, and includes the following content.

S71，UE接收基站转发网络侧下发给UE的反馈格式的图案。S71. The UE receives the pattern of the feedback format delivered to the UE by the base station forwarding the network side.

S72，UE通过HS-DPCCH信道，按照从基站接收的反馈格式的图案向基站发送信道状态信息，其中信道状态信息包括长期码本的第一码本信息和短期码本的第二码本信息，所述第一码本信息包括所述第一码本的预编码码本索引值（PCI）和所述第一码本的秩信息（RI），所述第二码本信息包括所述第二码本的PCI和所述第二码本的RI，所述第一码本的PCI和所述第二码本的PCI用于确定信道预编码处理的最终使用的预编码码本，所述第一码本的RI和所述第二码本的RI用于确定预编码码本的秩。S72. The UE sends channel state information to the base station according to the pattern of the feedback format received from the base station through the HS-DPCCH channel, where the channel state information includes the first codebook information of the long-term codebook and the second codebook information of the short-term codebook, The first codebook information includes the precoding codebook index value (PCI) of the first codebook and the rank information (RI) of the first codebook, and the second codebook information includes the second The PCI of the codebook and the RI of the second codebook, the PCI of the first codebook and the PCI of the second codebook are used to determine the final precoding codebook used in channel precoding processing, and the first The RI of the first codebook and the RI of the second codebook are used to determine the rank of the precoding codebook.

上述信道状态信息不但包括RI和PCI，还可以包括CQI和ACK/NACK信息等。The above channel state information includes not only RI and PCI, but also CQI and ACK/NACK information.

此处，所述第一码本（W(1)）反映了同极化天线内的信道关系，是一个长期码本，第二码本（W(2)）表示了不同极化天线之间的相位变化和信道变化关系，是一个短期码本。基站最终使用的预编码码本由第一码本和第二码本共同决定。与使用一个码本的现有技术相比，通过使用反映双码本信道质量的反馈信息可以在相同反馈开销的前提下提高反馈信息精度。其中，第一码本的RI反映了信道最终使用的秩的范围是在{1或2}还是{3或4}，结合第二码本的RI，能够最终确定信道秩。Here, the first codebook (W(1) ) reflects the channel relationship in the antennas with the same polarization, and is a long-term codebook, and the second codebook (W(2) ) represents the channel relationship between antennas with different polarizations. The relationship between phase change and channel change is a short-term codebook. The precoding codebook finally used by the base station is jointly determined by the first codebook and the second codebook. Compared with the prior art using one codebook, the accuracy of the feedback information can be improved under the same feedback overhead by using the feedback information reflecting the channel quality of the dual codebooks. Wherein, the RI of the first codebook reflects whether the rank range of the channel finally used is {1 or 2} or {3 or 4}, combined with the RI of the second codebook, the channel rank can be finally determined.

UE使用的反馈格式的图案可以参考第一至第六实施例中的反馈格式的图案，出于简洁，此处不再赘述。其中，反馈格式的图案中，包括对应于一个TTI单位内HS-DPCCH信道的两种反馈格式，第一码本信息的反馈格式和第二码本信息的反馈格式，分别用以承载所述第一码本信息和所述第二码本信息，在一个反馈格式的图案中，至少在一个指定TTI上使用所述第一码本信息的反馈格式，至少在一个或多个指定的连续TTI单位上使用所述第二码本信息的反馈格式，其中反馈格式的图案的反馈周期对应于所述第一码本信息的反馈周期，所述第一码本信息的反馈周期比所述第二码本信息的反馈周期长。For the patterns of the feedback formats used by the UE, reference may be made to the patterns of the feedback formats in the first to sixth embodiments, and for the sake of brevity, details are not repeated here. Wherein, the pattern of the feedback format includes two feedback formats corresponding to the HS-DPCCH channel in one TTI unit, the feedback format of the first codebook information and the feedback format of the second codebook information are respectively used to carry the first A codebook information and the second codebook information, in a feedback format pattern, use the feedback format of the first codebook information on at least one specified TTI, at least in one or more specified continuous TTI units Using the feedback format of the second codebook information above, wherein the feedback period of the pattern of the feedback format corresponds to the feedback period of the first codebook information, and the feedback period of the first codebook information is shorter than that of the second codebook information The feedback period for this information is long.

本发明实施例中，UE按照一定反馈格式的图案周期性发送携带用于确定最终预编码码本的双码本的信道状态信息，通过上述这种长期码本信息（第一码本信息）和短期码本信息（第二码本信息）相结合的反馈方式，可以在保证反馈信息精度的前提下减小反馈量，从而节省空口资源和提高系统性能。In the embodiment of the present invention, the UE periodically sends the channel state information carrying the dual codebook used to determine the final precoding codebook according to a pattern of a certain feedback format. Through the above-mentioned long-term codebook information (first codebook information) and The short-term codebook information (second codebook information) combined feedback method can reduce the amount of feedback while ensuring the accuracy of the feedback information, thereby saving air interface resources and improving system performance.

图8是本发明第八实施例的基站80的示意框图。基站80包括发送单元81和接收单元82。Fig. 8 is a schematic block diagram of a base station 80 according to an eighth embodiment of the present invention. The base station 80 includes a sending unit 81 and a receiving unit 82 .

发送单元81转发网络侧下发给UE的反馈格式的图案。The sending unit 81 forwards the pattern of the feedback format sent by the network side to the UE.

接收单元82接收UE通过高速专用物理控制信道HS-DPCCH并按照发送单元81发送的反馈格式的图案发送的信道状态信息以获取预编码码本和所述预编码码本的秩用于执行预编码处理，其中所述信道状态信息包括第一码本信息和第二码本信息，所述第一码本信息包括所述第一码本的预编码码本索引值PCI和所述第一码本的秩信息RI，所述第二码本信息包括所述第二码本的PCI和所述第二码本的RI，所述第一码本的PCI和所述第二码本的PCI用于确定信道预编码处理的最终使用的预编码码本，所述第一码本的RI和所述第二码本的RI用于确定预编码码本的秩。The receiving unit 82 receives the channel state information sent by the UE through the high-speed dedicated physical control channel HS-DPCCH and according to the pattern of the feedback format sent by the sending unit 81 to obtain the precoding codebook and the rank of the precoding codebook for performing precoding processing, wherein the channel state information includes first codebook information and second codebook information, and the first codebook information includes the precoded codebook index value PCI of the first codebook and the first codebook The rank information RI of the second codebook information includes the PCI of the second codebook and the RI of the second codebook, and the PCI of the first codebook and the PCI of the second codebook are used for A final precoding codebook used in channel precoding processing is determined, and the RI of the first codebook and the RI of the second codebook are used to determine the rank of the precoding codebook.

可选的，根据本发明另一实施例，接收单元82使用的或发送单元81使用的反馈格式的图案可以包括本发明第三至第六实施例中的反馈格式的图案。所述反馈格式的图案中，包括对应于一个TTI单位内HS-DPCCH信道的两种反馈格式，第一码本信息的反馈格式和第二码本信息的反馈格式，分别用以承载所述第一码本信息和所述第二码本信息，在一个反馈格式的图案中，至少在一个指定TTI上使用所述第一码本信息的反馈格式，至少在一个或多个指定的连续TTI单位上使用所述第二码本信息的反馈格式，其中反馈格式的图案的反馈周期对应于所述第一码本信息的反馈周期，所述第一码本信息的反馈周期比所述第二码本信息的反馈周期长。Optionally, according to another embodiment of the present invention, the pattern of the feedback format used by the receiving unit 82 or used by the sending unit 81 may include the patterns of the feedback format in the third to sixth embodiments of the present invention. The pattern of the feedback format includes two feedback formats corresponding to the HS-DPCCH channel in one TTI unit, the feedback format of the first codebook information and the feedback format of the second codebook information are respectively used to carry the first A codebook information and the second codebook information, in a feedback format pattern, use the feedback format of the first codebook information on at least one specified TTI, at least in one or more specified continuous TTI units Using the feedback format of the second codebook information above, wherein the feedback period of the pattern of the feedback format corresponds to the feedback period of the first codebook information, and the feedback period of the first codebook information is shorter than that of the second codebook information The feedback period for this information is long.

第一码本信息的反馈格式具体包括：所述第一码本信息的反馈格式只包括编码后的所述第一码本的PCI，通过所述第一码本的PCI能够确定所述第一码本的RI指示的所述预编码码本的秩的范围在{1或2}内或在{3或4}内。The feedback format of the first codebook information specifically includes: the feedback format of the first codebook information only includes the encoded PCI of the first codebook, and the first codebook can be determined through the PCI of the first codebook. The range of the rank of the precoding codebook indicated by the RI of the codebook is within {1 or 2} or within {3 or 4}.

第二码本信息的反馈格式具体有以下几种，针对不同反馈格式承载的内容，基站80获取预编码码本和所述预编码码本的秩用于执行预编码处理的内容略有不同。The feedback formats of the second codebook information specifically include the following types. For the content carried by different feedback formats, the base station 80 obtains the precoding codebook and the content of the rank of the precoding codebook used to perform precoding processing is slightly different.

所述第二码本信息的反馈格式具体包括：如果第一码本RI指示对应所述第一码本信息的反馈周期内的所述预编码码本的秩的范围在{1或2}内时，则所述第二码本信息的反馈格式只包括编码后的所述第二码本的PCI，通过TYPEA类型CQI的具体取值确定所述第二码本的RI所述预编码码本的秩具体为1或具体为2，或如果第一码本的RI指示对应所述第一码本信息的反馈周期内的预编码码本的秩的范围在{3或4}内时，则第二码本信息包括编码后的第二码本的PCI和所述第二码本的RI，且所述第二码本的RI通过1比特表达，用于指示所述预编码码本的秩具体为3还是为4。The feedback format of the second codebook information specifically includes: if the first codebook RI indicates that the rank range of the precoding codebook within the feedback period corresponding to the first codebook information is within {1 or 2} , the feedback format of the second codebook information only includes the encoded PCI of the second codebook, and the RI of the second codebook is determined by the specific value of the TYPEA type CQI. The precoding codebook The rank of is specifically 1 or specifically 2, or if the RI of the first codebook indicates that the rank range of the precoding codebook within the feedback cycle corresponding to the first codebook information is within {3 or 4}, then The second codebook information includes the encoded PCI of the second codebook and the RI of the second codebook, and the RI of the second codebook is expressed by 1 bit, which is used to indicate the rank of the precoding codebook Specifically 3 or 4.

所述第二码本信息的反馈格式具体包括：如果第一码本RI指示对应所述第一码本信息的反馈周期内的预编码码本的秩的范围在{1或2}内时，则第二码本信息包括编码后的第二码本的PCI和第二码本的RI，且所述第二码本的RI通过1比特表达，用于指示所述预编码码本的秩具体为1或为2，或如果第一码本RI指示对应所述第一码本信息的反馈周期内的预编码码本的秩的范围在{3或4}内时，则第二码本信息包括编码后的第二码本的PCI和所述第二码本的RI，且所述第二码本的RI通过1比特表达，用于指示所述预编码码本的秩具体为3还是为4。The feedback format of the second codebook information specifically includes: if the first codebook RI indicates that the rank range of the precoding codebook within the feedback cycle corresponding to the first codebook information is within {1 or 2}, Then the second codebook information includes the encoded PCI of the second codebook and the RI of the second codebook, and the RI of the second codebook is expressed by 1 bit, which is used to indicate that the rank of the precoding codebook is specific is 1 or 2, or if the first codebook RI indicates that the rank range of the precoding codebook in the feedback cycle corresponding to the first codebook information is within {3 or 4}, then the second codebook information Including the PCI of the encoded second codebook and the RI of the second codebook, and the RI of the second codebook is expressed by 1 bit, which is used to indicate whether the rank of the precoding codebook is specifically 3 or 4.

基站80将所述第一码本信息PCI能够确定的第一码本和所述第二码本信息PCI对应的第二码本的乘积作为下行发送时每个TTI上最终使用的预编码码本，所述第一码本的RI指示在对应所述第一码本信息的反馈周期内预编码码本的秩的范围，根据所述第一码本的RI所述第二码本的RI进一步指示出每个第二码本信息的反馈周期内具体的预编码码本的秩。The base station 80 uses the product of the first codebook that can be determined by the first codebook information PCI and the second codebook corresponding to the second codebook information PCI as the final precoding codebook used in each TTI during downlink transmission , the RI of the first codebook indicates the rank range of the precoding codebook in the feedback cycle corresponding to the first codebook information, and the RI of the second codebook further according to the RI of the first codebook Indicates the rank of a specific precoding codebook in each second codebook information feedback period.

所述第二码本信息的反馈格式具体包括：如果第一码本RI指示对应所述第一码本信息的反馈周期内的预编码码本的秩的范围在{1或2}内时，则第二码本信息包括编码后的第二码本的PCI和第二码本的RI，且所述第二码本的RI通过1比特表达，用于指示所述预编码码本的秩具体为1或为2，或如果第一码本RI指示对应所述第一码本信息的反馈周期内的预编码码本的秩的范围在{3或4}内时，则第二码本信息包括编码后的第二码本的PCI和所述第二码本的RI，且所述第二码本的RI通过2比特表达，用于指示所述预编码码本的秩具体为1至4中具体的一个。The feedback format of the second codebook information specifically includes: if the first codebook RI indicates that the rank range of the precoding codebook within the feedback cycle corresponding to the first codebook information is within {1 or 2}, Then the second codebook information includes the encoded PCI of the second codebook and the RI of the second codebook, and the RI of the second codebook is expressed by 1 bit, which is used to indicate that the rank of the precoding codebook is specific is 1 or 2, or if the first codebook RI indicates that the rank range of the precoding codebook in the feedback cycle corresponding to the first codebook information is within {3 or 4}, then the second codebook information Including the encoded PCI of the second codebook and the RI of the second codebook, and the RI of the second codebook is expressed by 2 bits, which is used to indicate that the rank of the precoding codebook is specifically 1 to 4 a specific one of the

基站80获取预编码码本和所述预编码码本的秩用于执行预编码处理的内容如下。The base station 80 acquires the precoding codebook and the rank of the precoding codebook to perform precoding processing as follows.

如果第一码本RI指示对应所述第一码本信息的反馈周期内的预编码码本的秩的范围在{1或2}内时，或者，如果第一码本RI指示对应所述第一码本信息的反馈周期内的预编码码本的秩的范围在{3或4}内，且所述2比特的第二码本RI指示信道的具体秩仍然在{3或4}内时，所述第一码本信息PCI能够确定的第一码本和所述第二码本信息PCI对应的第二码本的乘积为最终使用的预编码码本，所述第一码本的RI指示在对应所述第一码本信息的反馈周期内预编码码本的秩的范围，根据所述第一码本的RI所述第二码本的RI进一步指示出每个第二码本信息的反馈周期内具体的预编码码本的秩;If the first codebook RI indicates that the rank range of the precoding codebook in the feedback period corresponding to the first codebook information is within {1 or 2}, or if the first codebook RI indicates that the rank range corresponding to the first codebook information When the rank range of the precoding codebook within a codebook information feedback cycle is within {3 or 4}, and the 2-bit second codebook RI indicates that the specific rank of the channel is still within {3 or 4} , the product of the first codebook that can be determined by the first codebook information PCI and the second codebook corresponding to the second codebook information PCI is the final precoding codebook used, and the RI of the first codebook Indicate the rank range of the precoding codebook in the feedback period corresponding to the first codebook information, and further indicate each second codebook information according to the RI of the first codebook and the RI of the second codebook The rank of the specific precoding codebook within the feedback period of ;

如果第一码本RI指示对应所述第一码本信息的反馈周期内的预编码码本的秩的范围在{3或4}内，且所述2比特的第二码本RI指示信道的具体秩在{1或2}内时，所述预编码码本的秩为第二码本RI具体指示的秩信息，从第一码本前两列中抽取出一列列向量并从第一码本的后两列中也抽取出一列两向量，将抽取出的两列列向量组成新的第一码本，并与第二码本信息包括的PCI对应的预编码矩阵的进行乘积，作为最终的预编码矩阵。If the first codebook RI indicates that the rank range of the precoding codebook in the feedback period corresponding to the first codebook information is within {3 or 4}, and the 2-bit second codebook RI indicates the channel When the specific rank is within {1 or 2}, the rank of the precoding codebook is the rank information specifically indicated by the second codebook RI, and a column of column vectors is extracted from the first two columns of the first codebook and extracted from the first codebook RI A column of two vectors is also extracted from the last two columns of the book, and the extracted two columns of vectors form a new first codebook, and the product of the precoding matrix corresponding to the PCI included in the second codebook information is used as the final The precoding matrix of .

所述第二码本信息的反馈格式具体包括：如果第一码本RI指示对应所述第一码本信息的反馈周期内的预编码码本的秩的范围在{1或2}内时，则第二码本信息包括编码后的第二码本的PCI和第二码本的RI，且所述第二码本的RI通过1比特表达，用于指示所述预编码码本的秩具体为1或为2，或如果第一码本RI指示对应所述第一码本信息的反馈周期内的预编码码本的秩的范围在{3或4}内时，则所述反馈格式的图案内包括至少两种第二码本信息反馈格式，第一种第二码本格式和第二种第二码本格式，其中第一种第二码本信息的反馈格式用于指示所述预编码码本的秩具体为3或为4时的第二码本RI和PCI信息，第二种第二码本信息反馈格式用于指示所述预编码码本的秩具体为1或为2时的第二码本的PCI和RI信息。The feedback format of the second codebook information specifically includes: if the first codebook RI indicates that the rank range of the precoding codebook within the feedback cycle corresponding to the first codebook information is within {1 or 2}, Then the second codebook information includes the encoded PCI of the second codebook and the RI of the second codebook, and the RI of the second codebook is expressed by 1 bit, which is used to indicate that the rank of the precoding codebook is specific is 1 or 2, or if the first codebook RI indicates that the rank range of the precoding codebook in the feedback cycle corresponding to the first codebook information is within {3 or 4}, then the feedback format The pattern includes at least two second codebook information feedback formats, a first type of second codebook format and a second type of second codebook format, wherein the feedback format of the first type of second codebook information is used to indicate the predetermined Encoding the second codebook RI and PCI information when the rank of the codebook is specifically 3 or 4, the second second codebook information feedback format is used to indicate when the rank of the precoding codebook is specifically 1 or 2 PCI and RI information of the second codebook.

基站80获取预编码码本和所述预编码码本的秩用于执行预编码处理的内容如下。The base station 80 acquires the precoding codebook and the rank of the precoding codebook to perform precoding processing as follows.

如果第一码本RI指示对应所述第一码本信息的反馈周期内的预编码码本的秩的范围在{1或2}内时，或者，如果第一码本RI指示对应所述第一码本信息的反馈周期内的预编码码本的秩的范围在{3或4}内，且对应TTI上的反馈格式为第一种第二码本反馈格式时，所述第一码本信息PCI能够确定的第一码本和所述第二码本信息PCI对应的第二码本的乘积为最终使用的预编码码本，所述第一码本的RI指示在对应所述第一码本信息的反馈周期内预编码码本的秩的范围，在该所述范围内所述第二码本的RI进一步指示出每个第二码本信息的反馈周期内具体的预编码码本的秩;If the first codebook RI indicates that the rank range of the precoding codebook in the feedback period corresponding to the first codebook information is within {1 or 2}, or if the first codebook RI indicates that the rank range corresponding to the first codebook information When the rank range of the precoding codebook in the feedback cycle of a codebook information is within {3 or 4}, and the feedback format on the corresponding TTI is the first type of the second codebook feedback format, the first codebook The product of the first codebook that can be determined by the information PCI and the second codebook corresponding to the second codebook information PCI is the final precoding codebook used, and the RI of the first codebook indicates that the codebook corresponding to the first codebook The rank range of the precoding codebook in the feedback cycle of the codebook information, and the RI of the second codebook within the range further indicates the specific precoding codebook in the feedback cycle of each second codebook information rank;

如果第一码本RI指示对应所述第一码本信息的反馈周期内的预编码码本的秩的范围在{3或4}内，且对应TTI上的反馈格式为第二种第二码本反馈格式时，所述预编码码本的秩为第二种第二码本反馈格式中具体指示的秩信息，从第一码本前两列中抽取出一列列向量并从第一码本的后两列中也抽取出一列两向量，将抽取出的两列列向量组成新的第一码本，并与第二码本信息包括的PCI对应的预编码矩阵的进行乘积，作为最终的预编码矩阵。If the first codebook RI indicates that the rank range of the precoding codebook in the feedback cycle corresponding to the first codebook information is within {3 or 4}, and the feedback format on the corresponding TTI is the second type of second code In this feedback format, the rank of the precoding codebook is the rank information specifically indicated in the second codebook feedback format of the second type, and a column of column vectors is extracted from the first two columns of the first codebook and extracted from the first codebook A column of two vectors is also extracted from the last two columns of , and the extracted two columns of column vectors form a new first codebook, and the product of the precoding matrix corresponding to the PCI included in the second codebook information is used as the final precoding matrix.

本发明实施例中，基站接收按照一定反馈格式的图案周期性反馈的携带用于确定最终预编码码本的双码本的信道状态信息，通过上述这种长期码本信息（第一码本信息）和短期码本信息（第二码本信息）相结合的反馈方式，可以在保证反馈信息精度的前提下减小反馈量，从而节省空口资源和提高系统性能。In the embodiment of the present invention, the base station receives the channel state information carrying the dual codebook used to determine the final precoding codebook that is periodically fed back according to a pattern of a certain feedback format, and through the above-mentioned long-term codebook information (the first codebook information ) and short-term codebook information (the second codebook information) can reduce the amount of feedback while ensuring the accuracy of the feedback information, thereby saving air interface resources and improving system performance.

图9是本发明第九实施例的UE90的示意框图。UE90包括接收单元91和发送单元92。Fig. 9 is a schematic block diagram of a UE 90 according to a ninth embodiment of the present invention. UE90 includes a receiving unit 91 and a sending unit 92 .

接收单元91接收基站转发网络侧下发给UE的反馈格式的图案，并将所述反馈格式的图案发送到发送单元。The receiving unit 91 receives the pattern of the feedback format sent by the base station to the UE from the network side, and sends the pattern of the feedback format to the sending unit.

发送单元92通过HS-DPCCH信道，并按照所述接收单元从所述基站接收的所述反馈格式的图案向所述基站发送信道状态信息，其中所述信道状态信息包括第一码本信息和第二码本信息，所述第一码本信息包括所述第一码本的预编码码本索引值PCI和所述第一码本的秩信息RI，所述第二码本信息包括所述第二码本的PCI和所述第二码本的RI，所述第一码本的PCI和所述第二码本的PCI用于确定信道预编码处理的最终使用的预编码码本，所述第一码本的RI和所述第二码本的RI用于确定预编码码本的秩。The sending unit 92 sends channel state information to the base station according to the pattern of the feedback format received by the receiving unit from the base station through the HS-DPCCH channel, wherein the channel state information includes the first codebook information and the second codebook information. Two codebook information, the first codebook information includes the precoding codebook index PCI of the first codebook and the rank information RI of the first codebook, and the second codebook information includes the first codebook The PCI of the second codebook and the RI of the second codebook, the PCI of the first codebook and the PCI of the second codebook are used to determine the final precoding codebook used in channel precoding processing, and the The RI of the first codebook and the RI of the second codebook are used to determine the rank of the precoding codebook.

作为现有技术，基站广播CPICH，并向UE发送HS-PDSCH和HS-SCCH。UE根据CPICH信道的接收信号进行信道估计后得到信道状态信息。As an existing technology, the base station broadcasts the CPICH, and sends the HS-PDSCH and HS-SCCH to the UE. The UE obtains the channel state information after performing channel estimation according to the received signal of the CPICH channel.

可选的，作为另一个实施例，发送单元92使用的所述反馈格式的图案中，包括对应于一个TTI单位内HS-DPCCH信道的两种反馈格式，第一码本信息的反馈格式和第二码本信息的反馈格式，分别用以承载所述第一码本信息和所述第二码本信息，在一个反馈格式的图案中，至少在一个指定TTI上使用所述第一码本信息的反馈格式，至少在一个或多个指定的连续TTI单位上使用所述第二码本信息的反馈格式，其中反馈格式的图案的反馈周期对应于所述第一码本信息的反馈周期，所述第一码本信息的反馈周期比所述第二码本信息的反馈周期长。Optionally, as another embodiment, the pattern of the feedback format used by the sending unit 92 includes two feedback formats corresponding to the HS-DPCCH channel in one TTI unit, the feedback format of the first codebook information and the feedback format of the second codebook information. The feedback format of the two codebook information is respectively used to carry the first codebook information and the second codebook information, and in a feedback format pattern, the first codebook information is used at least on one specified TTI The feedback format of the second codebook information is used at least on one or more specified continuous TTI units, wherein the feedback period of the pattern of the feedback format corresponds to the feedback period of the first codebook information, so The feedback period of the first codebook information is longer than the feedback period of the second codebook information.

发送单元92使用反馈格式的图案可以包括本发明第三至第六实施例中的反馈格式的图案，具体细节可以参考第一至第八实施例，出于简洁，具体细节此处省略。The pattern of the feedback format used by the sending unit 92 may include the pattern of the feedback format in the third to sixth embodiments of the present invention. For details, refer to the first to eighth embodiments. For brevity, the details are omitted here.

本发明实施例中，UE按照一定反馈格式的图案周期性发送携带用于确定最终预编码码本的双码本的信道状态信息，通过上述这种长期码本信息（第一码本信息）和短期码本信息（第二码本信息）相结合的反馈方式，可以在保证反馈信息精度的前提下减小反馈量，从而节省空口资源和提高系统性能。In the embodiment of the present invention, the UE periodically sends the channel state information carrying the dual codebook used to determine the final precoding codebook according to a pattern of a certain feedback format. Through the above-mentioned long-term codebook information (first codebook information) and The short-term codebook information (second codebook information) combined feedback method can reduce the amount of feedback while ensuring the accuracy of the feedback information, thereby saving air interface resources and improving system performance.

图10是本发明第十实施例的基站100的示意框图。基站100包括接收机101、处理器102和发射机103。Fig. 10 is a schematic block diagram of a base station 100 according to a tenth embodiment of the present invention. The base station 100 includes a receiver 101 , a processor 102 and a transmitter 103 .

发射机103转发网络侧下发给UE的反馈格式的图案。The transmitter 103 forwards the pattern of the feedback format delivered by the network side to the UE.

接收机101接收UE通过高速专用物理控制信道HS-DPCCH并按照发射机103发射的反馈格式的图案发送的信道状态信息，且发送到处理器。The receiver 101 receives the channel state information sent by the UE through the high-speed dedicated physical control channel HS-DPCCH according to the pattern of the feedback format transmitted by the transmitter 103, and sends it to the processor.

处理器102基于接收机103接收的信道状态信息获取预编码码本和所述预编码码本的秩用于执行预编码处理，其中所述信道状态信息包括第一码本信息和第二码本信息，所述第一码本信息包括所述第一码本的预编码码本索引值PCI和所述第一码本的秩信息RI，所述第二码本信息包括所述第二码本的PCI和所述第二码本的RI，所述第一码本的PCI和所述第二码本的PCI用于确定信道预编码处理的最终使用的预编码码本，所述第一码本的RI和所述第二码本的RI用于确定预编码码本的秩。The processor 102 acquires a precoding codebook and a rank of the precoding codebook based on the channel state information received by the receiver 103 for performing precoding processing, wherein the channel state information includes first codebook information and a second codebook information, the first codebook information includes the precoding codebook index value PCI of the first codebook and the rank information RI of the first codebook, and the second codebook information includes the second codebook The PCI of the second codebook and the RI of the second codebook, the PCI of the first codebook and the PCI of the second codebook are used to determine the final precoding codebook used in the channel precoding process, and the first codebook The RI of the book and the RI of the second codebook are used to determine the rank of the precoding codebook.

上述信道状态信息不但包括RI和PCI，还可以包括CQI和ACK/NACK信息等。The above channel state information includes not only RI and PCI, but also CQI and ACK/NACK information.

此处，所述第一码本（W(1)）反映了同极化天线内的信道关系，是一个长期码本，第二码本（W(2)）表示了不同极化天线之间的相位变化和信道变化关系，是一个短期码本。基站最终使用的预编码码本由第一码本和第二码本共同决定。与使用一个码本的现有技术相比，通过使用反映双码本信道质量的反馈信息可以在相同反馈开销的前提下提高反馈信息精度。其中，第一码本的RI反映了信道最终使用的秩的范围是在{1或2}还是{3或4}，结合第二码本的RI，能够最终确定信道秩。Here, the first codebook (W(1) ) reflects the channel relationship in the antennas with the same polarization, and is a long-term codebook, and the second codebook (W(2) ) represents the channel relationship between antennas with different polarizations. The relationship between phase change and channel change is a short-term codebook. The precoding codebook finally used by the base station is jointly determined by the first codebook and the second codebook. Compared with the prior art using one codebook, the accuracy of the feedback information can be improved under the same feedback overhead by using the feedback information reflecting the channel quality of the dual codebooks. Wherein, the RI of the first codebook reflects whether the rank range of the channel finally used is {1 or 2} or {3 or 4}, combined with the RI of the second codebook, the channel rank can be finally determined.

本发明实施例中，基站接收按照一定反馈格式的图案周期性反馈的携带用于确定最终预编码码本的双码本的信道状态信息，通过上述这种长期码本信息（第一码本信息）和短期码本信息（第二码本信息）相结合的反馈方式，可以在保证反馈信息精度的前提下减小反馈量，从而节省空口资源和提高系统性能。In the embodiment of the present invention, the base station receives the channel state information carrying the dual codebook used to determine the final precoding codebook that is periodically fed back according to a pattern of a certain feedback format, and through the above-mentioned long-term codebook information (the first codebook information ) and short-term codebook information (the second codebook information) can reduce the amount of feedback while ensuring the accuracy of the feedback information, thereby saving air interface resources and improving system performance.

此外，发射机103通过转发RRC信令向UE发送反馈格式的图案。其中，反馈格式的图案中，包括对应于一个TTI单位内HS-DPCCH信道的两种反馈格式，第一码本信息的反馈格式和第二码本信息的反馈格式，分别用以承载所述第一码本信息和所述第二码本信息，在一个反馈格式的图案中，至少在一个指定TTI上使用所述第一码本信息的反馈格式，至少在一个或多个指定的连续TTI单位上使用所述第二码本信息的反馈格式，其中反馈格式的图案的反馈周期对应于所述第一码本信息的反馈周期，所述第一码本信息的反馈周期比所述第二码本信息的反馈周期长。In addition, the transmitter 103 sends the pattern of the feedback format to the UE by forwarding the RRC signaling. Wherein, the pattern of the feedback format includes two feedback formats corresponding to the HS-DPCCH channel in one TTI unit, the feedback format of the first codebook information and the feedback format of the second codebook information are respectively used to carry the first A codebook information and the second codebook information, in a feedback format pattern, use the feedback format of the first codebook information on at least one specified TTI, at least in one or more specified continuous TTI units Using the feedback format of the second codebook information above, wherein the feedback period of the pattern of the feedback format corresponds to the feedback period of the first codebook information, and the feedback period of the first codebook information is shorter than that of the second codebook information The feedback period for this information is long.

接收机101接收的或发射机103发送的反馈格式的图案可以参考第一至第六实施例中的反馈格式的图案，出于简洁，此处不再赘述。For the pattern of the feedback format received by the receiver 101 or sent by the transmitter 103, reference may be made to the pattern of the feedback format in the first to sixth embodiments, and for the sake of brevity, details are not repeated here.

图11是本发明第十一实施例的UE110的示意框图。UE110包括接收机111、处理器112和发射机113。Fig. 11 is a schematic block diagram of a UE 110 according to an eleventh embodiment of the present invention. UE 110 includes a receiver 111 , a processor 112 and a transmitter 113 .

接收机111接收基站转发网络侧下发给UE的反馈格式的图案，且发送到处理器112。The receiver 111 receives the pattern of the feedback format that the base station forwards and sends to the UE from the network side, and sends it to the processor 112 .

作为现有技术，接收机111还接收基站广播的CPICH、基站发送的HS-PDSCH和HS-SCCH。处理器112根据接收机111所接收的CPICH信道进行信道估计后得到信道状态信息，并发送到发射机113。As a prior art, the receiver 111 also receives the CPICH broadcast by the base station, and the HS-PDSCH and HS-SCCH sent by the base station. The processor 112 performs channel estimation according to the CPICH channel received by the receiver 111 to obtain channel state information, and sends it to the transmitter 113 .

发射机113通过HS-DPCCH信道，按照接收机111从所述基站接收的反馈格式的图案向所述基站发送信道状态信息，其中信道状态信息包括长期码本的第一码本信息和短期码本的第二码本信息，所述第一码本信息包括所述第一码本的预编码码本索引值（PCI）和所述第一码本的秩信息（RI），所述第二码本信息包括所述第二码本的PCI和所述第二码本的RI，所述第一码本的PCI和所述第二码本的PCI用于确定信道预编码处理的最终使用的预编码码本，所述第一码本的RI和所述第二码本的RI用于确定预编码码本的秩。The transmitter 113 sends channel state information to the base station according to the pattern of the feedback format received by the receiver 111 from the base station through the HS-DPCCH channel, wherein the channel state information includes the first codebook information of the long-term codebook and the short-term codebook The second codebook information, the first codebook information includes the precoding codebook index value (PCI) of the first codebook and the rank information (RI) of the first codebook, the second codebook This information includes the PCI of the second codebook and the RI of the second codebook, and the PCI of the first codebook and the PCI of the second codebook are used to determine the channel precoding process. An encoding codebook, the RI of the first codebook and the RI of the second codebook are used to determine the rank of the precoding codebook.

上述信道状态信息不但包括RI和PCI，还可以包括CQI和ACK/NACK信息等。The above channel state information includes not only RI and PCI, but also CQI and ACK/NACK information.

此处，所述第一码本（W(1)）反映了同极化天线内的信道关系，是一个长期码本，第二码本（W(2)）表示了不同极化天线之间的相位变化和信道变化关系，是一个短期码本。基站最终使用的预编码码本由第一码本和第二码本共同决定。与使用一个码本的现有技术相比，通过使用反映双码本信道质量的反馈信息可以在相同反馈开销的前提下提高反馈信息精度。其中，第一码本的RI反映了信道最终使用的秩的范围是在{1或2}还是{3或4}，结合第二码本的RI，能够最终确定信道秩。Here, the first codebook (W(1) ) reflects the channel relationship in the antennas with the same polarization, and is a long-term codebook, and the second codebook (W(2) ) represents the channel relationship between antennas with different polarizations. The relationship between phase change and channel change is a short-term codebook. The precoding codebook finally used by the base station is jointly determined by the first codebook and the second codebook. Compared with the prior art using one codebook, the accuracy of the feedback information can be improved under the same feedback overhead by using the feedback information reflecting the channel quality of the dual codebooks. Wherein, the RI of the first codebook reflects whether the rank range of the channel finally used is {1 or 2} or {3 or 4}, combined with the RI of the second codebook, the channel rank can be finally determined.

发射机113使用的反馈格式的图案可以参考第一至第六实施例中的反馈格式的图案，出于简洁，此处不再赘述。其中，反馈格式的图案中，包括对应于一个TTI单位内HS-DPCCH信道的两种反馈格式，第一码本信息的反馈格式和第二码本信息的反馈格式，分别用以承载所述第一码本信息和所述第二码本信息，在一个反馈格式的图案中，至少在一个指定TTI上使用所述第一码本信息的反馈格式，至少在一个或多个指定的连续TTI单位上使用所述第二码本信息的反馈格式，其中反馈格式的图案的反馈周期对应于所述第一码本信息的反馈周期，所述第一码本信息的反馈周期比所述第二码本信息的反馈周期长。For the patterns of the feedback formats used by the transmitter 113, reference may be made to the patterns of the feedback formats in the first to sixth embodiments, and for the sake of brevity, details are not repeated here. Wherein, the pattern of the feedback format includes two feedback formats corresponding to the HS-DPCCH channel in one TTI unit, the feedback format of the first codebook information and the feedback format of the second codebook information are respectively used to carry the first A codebook information and the second codebook information, in a feedback format pattern, use the feedback format of the first codebook information on at least one specified TTI, at least in one or more specified continuous TTI units Using the feedback format of the second codebook information above, wherein the feedback period of the pattern of the feedback format corresponds to the feedback period of the first codebook information, and the feedback period of the first codebook information is shorter than that of the second codebook information The feedback period for this information is long.

本发明实施例中，UE按照一定反馈格式的图案周期性发送携带用于确定最终预编码码本的双码本的信道状态信息，通过上述这种长期码本信息（第一码本信息）和短期码本信息（第二码本信息）相结合的反馈方式，可以在保证反馈信息精度的前提下减小反馈量，从而节省空口资源和提高系统性能。In the embodiment of the present invention, the UE periodically sends the channel state information carrying the dual codebook used to determine the final precoding codebook according to a pattern of a certain feedback format. Through the above-mentioned long-term codebook information (first codebook information) and The short-term codebook information (second codebook information) combined feedback method can reduce the amount of feedback while ensuring the accuracy of the feedback information, thereby saving air interface resources and improving system performance.

本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本发明的范围。Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present invention.

所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.

所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备（可以是个人计算机，服务器，或者网络设备等）执行本发明各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器（ROM，Read-OnlyMemory）、随机存取存储器（RAM，RandomAccessMemory）、磁碟或者光盘等各种可以存储程序代码的介质。If the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in various embodiments of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-OnlyMemory), random access memory (RAM, RandomAccessMemory), magnetic disk or optical disk, and other media that can store program codes.

以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应所述以权利要求的保护范围为准。The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (24)

if the first codebook RI indicates that the rank of the precoding codebook in the feedback period corresponding to the first codebook information is in the range of {1 or 2}, alternatively, if the first codebook RI indicates that the rank of the precoding codebook in the feedback period corresponding to the first codebook information is in the range of {3 or 4}, and the 2-bit second codebook RI indicates that the specific rank of the channel is still within 3 or 4, the product of the first codebook determined by the first codebook information PCI and the second codebook corresponding to the second codebook information PCI is the final used precoding codebook, the RI of the first codebook indicates a range of a rank of a precoding codebook within a feedback period corresponding to the first codebook information, according to the RI of the first codebook and the RI of the second codebook, the rank of a specific precoding codebook in a feedback period of each second codebook information is further indicated;
if the first codebook RI indicates that the range of the rank of the precoding codebook in the feedback period corresponding to the first codebook information is within {1 or 2}, or if the first codebook RI indicates that the range of the rank of the precoding codebook in the feedback period corresponding to the first codebook information is within {3 or 4}, and the feedback format on the corresponding TTI is the first second codebook feedback format, the product of the first codebook determined by the first codebook information PCI and the second codebook corresponding to the second codebook information PCI is the finally used precoding codebook, the first codebook RI indicates the range of the rank of the precoding codebook in the feedback period corresponding to the first codebook information, and the second codebook RI in the range further indicates the specific precoding codebook rank in each feedback period of the second codebook information;
if the first codebook RI indicates that the rank of the precoding codebook in the feedback period corresponding to the first codebook information is in the range of {1 or 2}, alternatively, if the first codebook RI indicates that the rank of the precoding codebook in the feedback period corresponding to the first codebook information is in the range of {3 or 4}, and the 2-bit second codebook RI indicates that the specific rank of the channel is still within 3 or 4, the product of the first codebook determined by the first codebook information PCI and the second codebook corresponding to the second codebook information PCI is the final used precoding codebook, the RI of the first codebook indicates a range of a rank of a precoding codebook within a feedback period corresponding to the first codebook information, according to the RI of the first codebook and the RI of the second codebook, the rank of a specific precoding codebook in a feedback period of each second codebook information is further indicated;
if the first codebook RI indicates that the range of the rank of the precoding codebook in the feedback period corresponding to the first codebook information is within {1 or 2}, or if the first codebook RI indicates that the range of the rank of the precoding codebook in the feedback period corresponding to the first codebook information is within {3 or 4}, and the feedback format on the corresponding TTI is the first second codebook feedback format, the product of the first codebook determined by the first codebook information PCI and the second codebook corresponding to the second codebook information PCI is the finally used precoding codebook, the first codebook RI indicates the range of the rank of the precoding codebook in the feedback period corresponding to the first codebook information, and the second codebook RI in the range further indicates the specific precoding codebook rank in each feedback period of the second codebook information;
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