CN104284429A - A method and user equipment for transmitting HARQ-ACK information - Google Patents

Abstract

Translated fromChinese

本申请公开了一种传输HARQ-ACK信息的方法和用户设备，包括：UE检测收基站发送的调度下行传输的PDCCH或者EPDCCH（DL Grant），并相应地接收调度的PDSCH；UE根据上述PDCCH的CCE索引或者EPDCCH的ECCE索引，得到分配的HARQ-ACK信道；UE传输HARQ-ACK信息。采用本发明的方法，可以保证了参考绑定窗口内的固定下行子帧的映射的HARQ-ACK信道不受灵活子帧影响；当灵活子帧用于上行传输时，其映射的HARQ-ACK信道可以释放从而用于PUSCH传输。采用本发明的方法，通过对ARO的设置，进一步降低HARQ-ACK信道开销，并提高HARQ-ACK信道分配的灵活性，提高上行资源利用率。

The present application discloses a method and user equipment for transmitting HARQ-ACK information, including: the UE detects the PDCCH or EPDCCH (DL Grant) sent by the base station for scheduled downlink transmission, and receives the scheduled PDSCH accordingly; the UE receives the scheduled PDSCH according to the above PDCCH The CCE index or the ECCE index of the EPDCCH obtains the allocated HARQ-ACK channel; the UE transmits the HARQ-ACK information. By adopting the method of the present invention, it can be ensured that the mapped HARQ-ACK channel of the fixed downlink subframe in the reference binding window is not affected by the flexible subframe; when the flexible subframe is used for uplink transmission, the mapped HARQ-ACK channel Can be released for PUSCH transmission. By adopting the method of the present invention, by setting the ARO, the overhead of the HARQ-ACK channel is further reduced, the flexibility of the allocation of the HARQ-ACK channel is improved, and the utilization rate of uplink resources is improved.

Description

Translated fromChinese

一种传输HARQ-ACK信息的方法和用户设备A method and user equipment for transmitting HARQ-ACK information

技术领域technical field

本发明涉及无线通信系统，更具体的说涉及在子帧的双工方向可以灵活改变的LTE系统中，对下行数据进行基于混合自动重传请求（HARQ）的传输方法和用户设备。The present invention relates to a wireless communication system, and more specifically to a hybrid automatic repeat request (HARQ)-based transmission method and user equipment for downlink data in an LTE system in which the duplex direction of a subframe can be flexibly changed.

背景技术Background technique

长期演进（LTE）系统支持时分双工（TDD）的工作方式。如图1所示是TDD系统的帧结构。每个无线帧的长度是10ms，它等分为两个长度为5ms的半帧。每个半帧包含8个长度为0.5ms的时隙和3个特殊域，即下行导频时隙（DwPTS）、保护间隔（GP）和上行导频时隙（UpPTS），这3个特殊域的长度的和是1ms。每个子帧由两个连续的时隙构成，即第k个子帧包含时隙2k和时隙2k+1。TDD系统中支持7种上行下行配置，如表1所示。这里，D代表下行子帧，U代表上行子帧，S代表上述包含3个特殊域的特殊子帧。The Long Term Evolution (LTE) system supports the working mode of Time Division Duplex (TDD). As shown in Figure 1 is the frame structure of the TDD system. The length of each radio frame is 10ms, which is equally divided into two half-frames with a length of 5ms. Each half-frame contains 8 time slots with a length of 0.5ms and 3 special domains, namely downlink pilot time slot (DwPTS), guard interval (GP) and uplink pilot time slot (UpPTS), these 3 special domains The sum of the lengths is 1ms. Each subframe consists of two consecutive time slots, that is, the kth subframe includes time slot 2k and time slot 2k+1. The TDD system supports seven uplink and downlink configurations, as shown in Table 1. Here, D represents a downlink subframe, U represents an uplink subframe, and S represents the above-mentioned special subframe including three special fields.

表1  LTE TDD的上行下行配置Table 1 Uplink and downlink configuration of LTE TDD

在LTE TDD系统中，资源分配的单位是物理资源块（PRB），一个PRB在频率上包含12个连续的子载波，在时间上对应一个时隙。一个下行子帧的前n个OFDM符号用于传输下行控制信息，包括物理下行控制信道（PDCCH）和其他控制信息，剩余的OFDM符号用来传输PDSCH。一个PDCCH是由L等于1、2、4或者8个控制信道单元（CCE）聚合而成。在LTE的后续版本中，还提出了增强PDCCH（EPDCCH）的概念，区别在于EPDCCH是映射到子帧的数据区域发送的，即EPDCCH与PDSCH是频分复用（FDM）的。一个EPDCCH是由L等于1、2、4或者8个增强CCE（ECCE）聚合而成。以下如无特别说明，PDCCH和ePDCCH统称为PDCCH；CCE和ECCE统称为CCE。In the LTE TDD system, the resource allocation unit is a physical resource block (PRB). A PRB contains 12 consecutive subcarriers in frequency and corresponds to a time slot in time. The first n OFDM symbols of a downlink subframe are used to transmit downlink control information, including physical downlink control channel (PDCCH) and other control information, and the remaining OFDM symbols are used to transmit PDSCH. A PDCCH is formed by aggregating L equal to 1, 2, 4 or 8 control channel elements (CCE). In the subsequent version of LTE, the concept of enhanced PDCCH (EPDCCH) is also proposed. The difference is that EPDCCH is mapped to the data area of the subframe and sent, that is, EPDCCH and PDSCH are frequency division multiplexed (FDM). An EPDCCH is formed by aggregating L equal to 1, 2, 4 or 8 enhanced CCEs (ECCEs). Unless otherwise specified below, the PDCCH and ePDCCH are collectively referred to as PDCCH; the CCE and ECCE are collectively referred to as CCE.

基站通过包含下行授权信令的PDCCH分配同一下行子帧内的PDSCH资源，UE收到下行授权信令后接收PDSCH并解码，然后按照一定的定时关系，在后续的一个上行子帧内发送对该PDSCH的HARQ-ACK信息。因为TDD支持多种上下行配置，一个上行子帧n内可以反馈0个、1个或者多个下行子帧内的PDSCH或者指示下行半持久调度释放（SPS release）的PDCCH对应的HARQ-ACK信息。这里，将在同一个上行子帧n内反馈HARQ-ACK信息的下行子帧的集合称为绑定窗口。绑定窗口内的下行子帧的索引是n-k，其中k属于集合K，集合K由上下行配置和上行子帧n决定，如表2所示。The base station allocates PDSCH resources in the same downlink subframe through the PDCCH containing the downlink authorization signaling. After receiving the downlink authorization signaling, the UE receives and decodes the PDSCH, and then sends the PDSCH resources in the subsequent uplink subframe according to a certain timing relationship. HARQ-ACK information of PDSCH. Because TDD supports a variety of uplink and downlink configurations, one uplink subframe n can feed back 0, 1 or multiple PDSCHs in downlink subframes or HARQ-ACK information corresponding to PDCCHs indicating downlink semi-persistent scheduling release (SPS release) . Here, the set of downlink subframes that feed back HARQ-ACK information in the same uplink subframe n is called a bundling window. The index of the downlink subframe in the binding window is n-k, where k belongs to the set K, and the set K is determined by the uplink and downlink configuration and the uplink subframe n, as shown in Table 2.

表2：索引集合KTable 2: Index set K

在LTE TDD系统，由于绑定窗口的大小M可以大于1，而每个下行子帧内的数据传输是独立调度的，为了使用户设备（UE）能够正确判断其是否丢失了基站发送的一个或者多个PDCCH信息，引入了下行分配指示（DAI）技术。具体地说，DAI标识一个下行子帧的PDCCH信息是当前绑定窗口内的第几个PDCCH。这里，DAI域包括2个比特，可以指示4个值，从而当绑定窗口的大小M为1,2,3,4时，不存在混淆的问题。In the LTE TDD system, since the size M of the binding window can be greater than 1, and the data transmission in each downlink subframe is independently scheduled, in order for the user equipment (UE) to correctly determine whether it has lost one or For multiple PDCCH information, downlink allocation indication (DAI) technology is introduced. Specifically, the DAI identifies which PDCCH the PDCCH information of a downlink subframe is in the current binding window. Here, the DAI field includes 2 bits and can indicate 4 values, so when the size M of the binding window is 1, 2, 3, 4, there is no confusion problem.

在现有LTE系统中，可以支持三种传输HARQ-ACK信息的方法。第一种方法是HARQ-ACK绑定的方法，它只用于UE配置单小区的情况。具体的说，绑定窗口内各个子帧的HARQ-ACK信息进行时间绑定得到1或者2个HARQ-ACK比特，并且UE是利用其检测到的最近一个下行子帧内的调度PDSCH的PDCCH或者指示半持久调度（SPS）释放的PDCCH的最小CCE索引对应隐含PUCCH格式1a/1b信道来反馈HARQ-ACK信息。第二种方法是信道选择的方法，它可以用于UE配置单小区和两个小区的情况。UE的所有HARQ-ACK信息被处理为M个HARQ-ACK信息，相应地需要分配M个PUCCH格式1b信道。这里，PUCCH格式1b信道可以是根据PDCCH的最小CCE索引隐含得到。第三种方法是基于PUCCH格式3的方法，它可以用于UE配置单小区和两个小区的情况，并且可以支持最多20个HARQ-ACK比特的传输。对这个方法，当UE收到辅小区（Scell）上的PDSCH或者检测到主小区（Pcell）上的下行分配指示（DAI）等于2的调度PDSCH的PDCCH或者指示SPS释放的PDCCH时，是用PUCCH格式3信道来传输HARQ-ACK信息；当UE只收到Pcell的DAI等于1的 PDCCH，或者同时收到Pcell的DAI等于1的 PDCCH和SPS下行数据时，才需要利用隐含PUCCH格式1b信道来反馈HARQ-ACK信道。In the existing LTE system, three methods for transmitting HARQ-ACK information can be supported. The first method is the method of HARQ-ACK bundling, which is only used when the UE is configured with a single cell. Specifically, the HARQ-ACK information of each subframe in the binding window is time-bonded to obtain 1 or 2 HARQ-ACK bits, and the UE uses the PDCCH or PDSCH scheduling PDSCH detected in the latest downlink subframe it detects. Indicates that the minimum CCE index of the PDCCH released by semi-persistent scheduling (SPS) corresponds to the implicit PUCCH format 1a/1b channel to feed back HARQ-ACK information. The second method is a method of channel selection, which can be used in the case where the UE is configured with a single cell or two cells. All HARQ-ACK information of the UE is processed into M pieces of HARQ-ACK information, and accordingly M pieces of PUCCH format 1b channels need to be allocated. Here, the PUCCH format 1b channel may be obtained implicitly according to the smallest CCE index of the PDCCH. The third method is a method based on PUCCH format 3, which can be used when the UE is configured with a single cell or two cells, and can support the transmission of up to 20 HARQ-ACK bits. For this method, when the UE receives the PDSCH on the secondary cell (Scell) or detects the PDCCH that schedules the PDSCH with the downlink allocation indicator (DAI) equal to 2 on the primary cell (Pcell) or the PDCCH that indicates the release of the SPS, it uses the PUCCH Format 3 channel to transmit HARQ-ACK information; when UE only receives PDCCH with Pcell DAI equal to 1, or receives PDCCH with Pcell DAI equal to 1 and SPS downlink data at the same time, it needs to use implicit PUCCH format 1b channel to transmit Feedback the HARQ-ACK channel.

在现在的LTE TDD规范中，小区采用的上行下行配置是通过广播信令配置的，即包含在系统信息块1（SIB1）中。这样，LTE系统支持最快640ms改变一次上下行配置，并且按照现有的规范在3个小时之内最多改变32次系统信息。为了更快地适配业务特性的变化，目前3GPP组织正在研究如何支持以更快的速度改变系统的上下行子帧的分布。按照目前的讨论结果，系统采用物理层信令指示从而可以支持在10ms这个量级的时间来改变TDD上下行配置。上述物理层信令指示当前的实际TDD上下行配置是如表1所示的7种现有TDD上下行配置之一。In the current LTE TDD specification, the uplink and downlink configuration adopted by the cell is configured through broadcast signaling, which is included in the system information block 1 (SIB1). In this way, the LTE system supports a change of the uplink and downlink configuration at the fastest 640ms, and changes the system information up to 32 times within 3 hours according to the existing specification. In order to quickly adapt to changes in service characteristics, the 3GPP organization is currently studying how to support changing the distribution of uplink and downlink subframes of the system at a faster speed. According to the current discussion results, the system uses physical layer signaling to support changing the TDD uplink and downlink configurations within a time of 10 ms. The above physical layer signaling indicates that the current actual TDD uplink and downlink configuration is one of the seven existing TDD uplink and downlink configurations shown in Table 1.

独立于上述实际TDD上下行配置，在确定上下行HARQ传输的方法时，目前讨论中的一种方法是对上下行数据传输分别设置参考上下行配置。所述参考上下行配置可以是预定义的，或者也可以是用高层信令半静态配置的。对下行参考上下行配置，其下行子帧是所有实际可以用到的TDD上下行配置的下行子帧的超集；对上行参考上下行配置，其上行子帧是所有实际可以用到的TDD上下行配置的上行子帧的超集。Independent of the above-mentioned actual TDD uplink and downlink configuration, when determining the uplink and downlink HARQ transmission method, one method currently under discussion is to respectively set reference uplink and downlink configurations for uplink and downlink data transmission. The reference uplink and downlink configuration may be predefined, or may be semi-statically configured by high-layer signaling. For the downlink, refer to the uplink and downlink configuration, and its downlink subframe is a superset of all available TDD uplink and downlink configuration downlink subframes; for the uplink, refer to the uplink and downlink configuration, and its uplink subframe is all the actually available TDD uplink and downlink subframes. A superset of uplink subframes configured in the row.

根据表1所示的7种现有TDD上下行配置，子帧0、子帧5、子帧1中的DwPTS和子帧6中的DwPTS一定是用于下行传输，其干扰特性与现有LTE系统的下行子帧相同；子帧2一定是用于上行传输，其干扰特性与现有LTE系统的上行子帧相同。其他5个子帧，即子帧3、4、7、8和9在一部分上下行配置中是下行子帧，在其他上下行配置中是上行子帧，其干扰分布与现有LTE系统是不同的。According to the seven existing TDD uplink and downlink configurations shown in Table 1, the DwPTS in subframe 0, subframe 5, and subframe 1 and the DwPTS in subframe 6 must be used for downlink transmission, and their interference characteristics are similar to those of the existing LTE system. The downlink subframes are the same; subframe 2 must be used for uplink transmission, and its interference characteristics are the same as the uplink subframes of the existing LTE system. The other five subframes, that is, subframes 3, 4, 7, 8, and 9 are downlink subframes in some uplink and downlink configurations, and uplink subframes in other uplink and downlink configurations, and their interference distribution is different from that of the existing LTE system .

因为在支持上下行配置可以快速变化的系统中，实际的上下行子帧分布是快速变化的，所以对上面描述的LTE系统中的三种传输HARQ-ACK信息的方法，相应地需要分配合适的隐含PUCCH格式1b信道。Because in a system that supports rapid changes in uplink and downlink configurations, the actual distribution of uplink and downlink subframes changes rapidly, so for the three methods of transmitting HARQ-ACK information in the LTE system described above, it is necessary to allocate appropriate Implicit PUCCH format 1b channel.

发明内容Contents of the invention

本申请旨在提供一种传输HARQ-ACK信息的方法和用户设备，能够保证参考绑定窗口内的固定下行子帧的映射的HARQ-ACK信道不受灵活子帧影响，或者，提高HARQ-ACK信道分配的灵活性，提高上行资源利用率。The present application aims to provide a method and user equipment for transmitting HARQ-ACK information, which can ensure that the mapped HARQ-ACK channel of the fixed downlink subframe in the reference binding window is not affected by the flexible subframe, or improve the HARQ-ACK The flexibility of channel allocation improves the utilization of uplink resources.

为实现上述目的，本申请采用如下的技术方案：In order to achieve the above object, the application adopts the following technical solutions:

一种传输HARQ-ACK信息的方法，包括：A method for transmitting HARQ-ACK information, comprising:

UE检测基站发送的调度下行传输的PDCCH或者EPDCCH，并相应地接收调度的PDSCH；The UE detects the PDCCH or EPDCCH sent by the base station to schedule downlink transmission, and receives the scheduled PDSCH accordingly;

UE根据所述PDCCH的CCE索引或者EPDCCH的ECCE索引，确定映射的HARQ-ACK信道；其中，UE获取的下行参考上下行配置对应参考绑定窗口中的所有子帧或者所述参考绑定窗口中除按照SIB1上下行配置已经分配HARQ-ACK信道以外的其他子帧，分为固定下行子帧和灵活子帧，固定下行子帧的CCE或者ECCE映射的HARQ-ACK信道独立于灵活子帧；The UE determines the mapped HARQ-ACK channel according to the CCE index of the PDCCH or the ECCE index of the EPDCCH; wherein, the downlink reference uplink and downlink configuration obtained by the UE corresponds to all subframes in the reference binding window or in the reference binding window Subframes other than the HARQ-ACK channel allocated according to the SIB1 uplink and downlink configuration are divided into fixed downlink subframes and flexible subframes. The HARQ-ACK channel mapped by the CCE or ECCE of the fixed downlink subframe is independent of the flexible subframe;

UE传输HARQ-ACK信息。The UE transmits HARQ-ACK information.

较佳地，在确定映射的HARQ-ACK信道时，固定下行子帧的CCE或者ECCE映射的HARQ-ACK信道独立于灵活子帧的方式包括：根据为固定下行子帧集合和灵活子帧集合分别配置的专用的HARQ-ACK信道起始偏移，确定为固定下行子帧和灵活子帧分配的HARQ-ACK信道。Preferably, when determining the mapped HARQ-ACK channel, the manner in which the HARQ-ACK channel mapped by the CCE or ECCE of the fixed downlink subframe is independent of the flexible subframe includes: according to the set of fixed downlink subframes and the set of flexible subframes respectively The configured dedicated HARQ-ACK channel start offset determines the HARQ-ACK channels allocated for fixed downlink subframes and flexible subframes.

较佳地，在确定映射的HARQ-ACK信道时，固定下行子帧的CCE或者ECCE映射的HARQ-ACK信道独立于灵活子帧的方式包括：从设置的HARQ-ACK信道起始偏移的资源开始，首先映射所有固定下行子帧的HARQ-ACK信道，紧邻最后一个固定下行子帧的HARQ-ACK信道资源，开始映射灵活子帧的HARQ-ACK信道。Preferably, when determining the mapped HARQ-ACK channel, the manner in which the HARQ-ACK channel mapped by the CCE or ECCE of the fixed downlink subframe is independent of the flexible subframe includes: resources offset from the set HARQ-ACK channel start At the beginning, the HARQ-ACK channels of all fixed downlink subframes are first mapped, and the HARQ-ACK channel resources of the last fixed downlink subframe are mapped immediately, and the HARQ-ACK channels of flexible subframes are mapped.

较佳地，当UE将所述参考绑定窗口中除按照SIB1上下行配置已经分配HARQ-ACK信道以外的其他子帧区分为固定下行子帧和灵活子帧时，固定下行子帧映射的HARQ-ACK信道是在集合K_SIB1映射的HARQ-ACK信道后面的资源上连续分配；其中，所述集合K_SIB1为按照SIB1上下行配置在同一个上行子帧的绑定窗口的子帧构成的集合。Preferably, when the UE divides the subframes in the reference binding window into fixed downlink subframes and flexible subframes except for the HARQ-ACK channel allocated according to the SIB1 uplink and downlink configuration, the HARQ subframe mapped by the fixed downlink subframe - The ACK channel is continuously allocated on the resources behind the HARQ-ACK channel mapped by the set K_SIB1 ; wherein, the set K_SIB1 is a set composed of subframes configured in the same uplink subframe binding window according to the SIB1 uplink and downlink .

较佳地，对所有灵活子帧预留HARQ-ACK信道；在确定映射的HARQ-ACK信道时，根据任一灵活子帧在所有灵活子帧构成集合中的索引，确定所述任一灵活子帧映射的HARQ-ACK信道；Preferably, the HARQ-ACK channel is reserved for all flexible subframes; when determining the mapped HARQ-ACK channel, according to the index of any flexible subframe in the set of all flexible subframes, determine any flexible subframe Frame-mapped HARQ-ACK channel;

或者，对所有灵活子帧中被当前实际上下行配置指示为下行子帧的灵活子帧预留HARQ-ACK信道；在确定映射的HARQ-ACK信道时，根据被当前实际上下行配置指示为下行子帧的任一灵活子帧m在当前实际上下行配置指示为下行子帧的所有灵活子帧构成集合中的索引，确定所述m映射的HARQ-ACK信道。Or, reserve the HARQ-ACK channel for the flexible subframes indicated as downlink subframes by the current actual downlink configuration in all flexible subframes; when determining the mapped HARQ-ACK channel, according to the actual downlink configuration indicated by the current downlink Any flexible subframe m of a subframe is actually indicated by the current downlink configuration as an index in a set of all flexible subframes of the downlink subframe, and determines the HARQ-ACK channel to which the m is mapped.

较佳地，对应PDCCH，对固定下行子帧构成集合和灵活子帧构成的集合分别采用块交织的方法映射HARQ-ACK信道。Preferably, corresponding to the PDCCH, the set of fixed downlink subframes and the set of flexible subframes are respectively mapped to the HARQ-ACK channel by means of block interleaving.

较佳地，在对EPDCCH映射的HARQ-ACK信道分配时，按照由K_SIB1、K'_fixed和K'_flexible组成的子帧超集作为一个绑定窗口K_super＝{K_SIB1,K'_fixed,K'_flexible}，K_super中的元素数目大于参考绑定窗口的元素数目，对参考绑定窗口中的一个子帧，按照这个子帧在K_super中的次序来分配这个子帧的EPDCCH对应的HARQ-ACK信道。Preferably,_when allocating the HARQ-ACK channel mapped to_the EPDCCH, a_binding window K_super ={K_SIB1 , K'_fixed , K'_flexible }, the number of elements in K_super is greater than the number of elements in the reference binding window, for a subframe in the reference binding window, the EPDCCH corresponding to the subframe is allocated according to the order of this subframe in K_super HARQ-ACK channel.

一种传输HARQ-ACK信息的方法，包括：A method for transmitting HARQ-ACK information, comprising:

UE检测基站发送的调度下行传输的利用EPDCCH承载的DL Grant，并相应地接收调度的PDSCH；The UE detects the DL Grant carried by the EPDCCH sent by the base station for scheduled downlink transmission, and receives the scheduled PDSCH accordingly;

UE根据所述EPDCCH的ECCE索引和DL Grant中的HARQ-ACK资源偏移ARO，确定映射的HARQ-ACK信道；其中，预先设定的ARO可选取值中，用于压缩HARQ-ACK信道开销的至少一个ARO取值，保证允许映射到索引靠前的HARQ-ACK信道的子帧数目不少于允许映射到索引靠后的HARQ-ACK信道的子帧数目；The UE determines the mapped HARQ-ACK channel according to the ECCE index of the EPDCCH and the HARQ-ACK resource offset ARO in the DL Grant; among them, the preset ARO selectable value is used to compress the HARQ-ACK channel overhead At least one ARO value of , ensuring that the number of subframes allowed to be mapped to the HARQ-ACK channel with a higher index is not less than the number of subframes allowed to be mapped to the HARQ-ACK channel with a lower index;

UE传输HARQ-ACK信息。The UE transmits HARQ-ACK information.

较佳地，所述ARO的一个可选取值设置为Preferably, an optional value of the ARO is set to

较佳地，所述ARO的一个可选取值设置为Preferably, an optional value of the ARO is set to

较佳地，对实际绑定窗口或参考绑定窗口或固定下行子帧集合或灵活子帧集合中的第m个子帧，所述ARO的一个可选取值用于在第m个HARQ-ACK信道块内分配HARQ-ACK信道；所述ARQ的其他三个可选取值用于压缩HARQ-ACK信道开销；Preferably, for the actual binding window or the reference binding window or the mth subframe in the fixed downlink subframe set or the flexible subframe set, an optional value of the ARO is used for the mth HARQ-ACK The HARQ-ACK channel is allocated in the channel block; the other three selectable values of the ARQ are used to compress the HARQ-ACK channel overhead;

其中，m＞0；所述实际绑定窗口对应于当前实际上下行配置；所述参考绑定窗口对应于下行参考上下行配置；UE将所述参考绑定窗口中的所有子帧或者所述参考绑定窗口中除按照SIB1上下行配置已经分配HARQ-ACK信道以外的其他子帧，区分为固定下行子帧和灵活子帧。Wherein, m>0; the actual binding window corresponds to the current actual downlink configuration; the reference binding window corresponds to the downlink reference uplink and downlink configuration; the UE assigns all subframes in the reference binding window or the Referring to other subframes in the binding window except for the allocated HARQ-ACK channel according to the SIB1 uplink and downlink configuration, they are divided into fixed downlink subframes and flexible subframes.

较佳地，对实际绑定窗口或参考绑定窗口或固定下行子帧集合或灵活子帧集合中的第m个子帧，所述ARO的四个可选取值均用于压缩HARQ-ACK信道资源开销；Preferably, for the actual binding window or the reference binding window or the mth subframe in the fixed downlink subframe set or the flexible subframe set, the four selectable values of the ARO are all used to compress the HARQ-ACK channel resource overhead;

其中，m＞0；所述实际绑定窗口对应于当前实际上下行配置；所述参考绑定窗口对应于下行参考上下行配置；UE将所述参考绑定窗口中的所有子帧或者所述参考绑定窗口中除按照SIB1上下行配置已经分配HARQ-ACK信道以外的其他子帧，区分为固定下行子帧和灵活子帧。Wherein, m>0; the actual binding window corresponds to the current actual downlink configuration; the reference binding window corresponds to the downlink reference uplink and downlink configuration; the UE assigns all subframes in the reference binding window or the Referring to other subframes in the binding window except for the allocated HARQ-ACK channel according to the SIB1 uplink and downlink configuration, they are divided into fixed downlink subframes and flexible subframes.

较佳地，为实际绑定窗口或参考绑定窗口或固定下行子帧集合或灵活子帧集合中的不同子帧，配置不同数目的用于压缩HARQ-ACK信道资源开销的ARO可选取值；Preferably, for different subframes in the actual bundling window or the reference bundling window or the fixed downlink subframe set or the flexible subframe set, different numbers of ARO selectable values for compressing the HARQ-ACK channel resource overhead are configured ;

其中，所述实际绑定窗口对应于当前实际上下行配置；所述参考绑定窗口对应于下行参考上下行配置；UE将所述参考绑定窗口中的所有子帧或者所述参考绑定窗口中除按照SIB1上下行配置已经分配HARQ-ACK信道以外的其他子帧，区分为固定下行子帧和灵活子帧。Wherein, the actual binding window corresponds to the current actual downlink configuration; the reference binding window corresponds to the downlink reference uplink and downlink configuration; the UE assigns all subframes in the reference binding window or the reference binding window The subframes except the HARQ-ACK channels allocated according to the SIB1 uplink and downlink configuration are divided into fixed downlink subframes and flexible subframes.

较佳地，对实际绑定窗口或参考绑定窗口或固定下行子帧集合或灵活子帧集合中的第m个子帧，N_ARO,1<N_ARO,2，N_ARO,1为m小于预设门限时所对应的用于压缩HARQ-ACK信道开销的ARO可选取值个数，N_ARO，2为m大于所述预设门限时所对应的用于压缩HARQ-ACK信道开销的ARO可选取值个数。Preferably, for the m-th subframe in the actual binding window or the reference binding window or the fixed downlink subframe set or the flexible subframe set, N_ARO,1 <N_ARO,2 , and N_ARO,1 is m less than the preset When the threshold is set, the number of selectable ARO values for compressing the HARQ-ACK channel overhead corresponding to N_{ARO, 2} is the corresponding ARO for compressing the HARQ-ACK channel overhead when m is greater than the preset threshold. Select the number of values.

较佳地，当多个子帧在同一个HARQ-ACK信道块中映射HARQ-ACK信道时，对不同的子帧的EPDCCH采用不同的HARQ-ACK信道偏移值。Preferably, when multiple subframes map the HARQ-ACK channel in the same HARQ-ACK channel block, different HARQ-ACK channel offset values are used for EPDCCHs of different subframes.

一种传输HARQ-ACK信息的用户设备，包括：信息接收单元、HARQ-ACK信道映射单元和HARQ-ACK信息传输单元；A user equipment for transmitting HARQ-ACK information, including: an information receiving unit, a HARQ-ACK channel mapping unit, and a HARQ-ACK information transmission unit;

所述信息接收单元，用于检测基站发送的调度下行传输的PDCCH或者EPDCCH，并相应地接收调度的PDSCH；The information receiving unit is used to detect the PDCCH or EPDCCH sent by the base station to schedule downlink transmission, and correspondingly receive the scheduled PDSCH;

所述HARQ-ACK信道映射单元，用于根据所述PDCCH的CCE索引或者EPDCCH的ECCE索引，确定映射的HARQ-ACK信道；其中，所述用户设备获取的下行参考上下行配置对应参考绑定窗口中的所有子帧或者所述参考绑定窗口中除按照SIB1上下行配置已经分配HARQ-ACK信道以外的其他子帧，分为固定下行子帧和灵活子帧，固定下行子帧的CCE或者ECCE映射的HARQ-ACK信道独立于灵活子帧；The HARQ-ACK channel mapping unit is configured to determine the mapped HARQ-ACK channel according to the CCE index of the PDCCH or the ECCE index of the EPDCCH; wherein, the downlink reference uplink and downlink configuration obtained by the user equipment corresponds to a reference binding window All subframes in or the subframes in the reference binding window except for the HARQ-ACK channel allocated according to the SIB1 uplink and downlink configuration are divided into fixed downlink subframes and flexible subframes, CCE or ECCE of fixed downlink subframes The mapped HARQ-ACK channel is independent of flexible subframes;

所述HARQ-ACK信息传输单元，用于在确定映射的HARQ-ACK信道上传输HARQ-ACK信息。The HARQ-ACK information transmission unit is configured to transmit HARQ-ACK information on the determined mapped HARQ-ACK channel.

一种传输HARQ-ACK信息的用户设备，包括：信息接收单元、HARQ-ACK信道映射单元和HARQ-ACK信息传输单元；A user equipment for transmitting HARQ-ACK information, including: an information receiving unit, a HARQ-ACK channel mapping unit, and a HARQ-ACK information transmission unit;

所述信息接收单元，用于检测基站发送的调度下行传输的利用EPDCCH承载的DL Grant，并相应地接收调度的PDSCH；The information receiving unit is used to detect the DL Grant carried by the EPDCCH sent by the base station for scheduled downlink transmission, and correspondingly receive the scheduled PDSCH;

所述HARQ-ACK信道映射单元，用于根据所述EPDCCH的ECCE索引和DL Grant中的HARQ-ACK资源偏移ARO，确定映射的HARQ-ACK信道；其中，预先设定的ARO可选取值中，用于压缩HARQ-ACK信道开销的ARO取值，保证允许映射到索引靠前的HARQ-ACK信道的子帧数目不少于允许映射到索引靠后的HARQ-ACK信道的子帧数目；The HARQ-ACK channel mapping unit is configured to determine the mapped HARQ-ACK channel according to the ECCE index of the EPDCCH and the HARQ-ACK resource offset ARO in the DL Grant; wherein, the preset ARO can select a value Among them, the ARO value used to compress the HARQ-ACK channel overhead ensures that the number of subframes allowed to be mapped to the HARQ-ACK channel with the higher index is not less than the number of subframes allowed to be mapped to the HARQ-ACK channel with the lower index;

所述HARQ-ACK信息传输单元，用于在确定映射的HARQ-ACK信道上传输HARQ-ACK信息。The HARQ-ACK information transmission unit is configured to transmit HARQ-ACK information on the determined mapped HARQ-ACK channel.

由上述技术方案可见，本申请中，可以保证参考绑定窗口内的固定下行子帧的映射的HARQ-ACK信道不受灵活子帧影响；当灵活子帧用于上行传输时，其映射的HARQ-ACK信道可以释放从而用于PUSCH传输。采用本发明的方法，通过对ARO的设置，进一步降低HARQ-ACK信道开销，并提高HARQ-ACK信道分配的灵活性，提高上行资源利用率。It can be seen from the above technical solution that in this application, it can be guaranteed that the HARQ-ACK channel mapped with reference to the fixed downlink subframe in the binding window is not affected by the flexible subframe; when the flexible subframe is used for uplink transmission, the mapped HARQ-ACK channel - The ACK channel can be released for PUSCH transmission. By adopting the method of the present invention, by setting the ARO, the overhead of the HARQ-ACK channel is further reduced, the flexibility of the allocation of the HARQ-ACK channel is improved, and the utilization rate of uplink resources is improved.

附图说明Description of drawings

图1为TDD系统的帧结构示意图；FIG. 1 is a schematic diagram of a frame structure of a TDD system;

图2为本申请方法的总体流程图；Fig. 2 is the overall flowchart of the application method;

图3为HARQ-ACK信道映射示意图一；FIG. 3 is a first schematic diagram of HARQ-ACK channel mapping;

图4为HARQ-ACK信道映射示意图二；FIG. 4 is a second schematic diagram of HARQ-ACK channel mapping;

图5为HARQ-ACK信道映射示意图三；FIG. 5 is a third schematic diagram of HARQ-ACK channel mapping;

图6为HARQ-ACK信道映射示意图四；FIG. 6 is a schematic diagram 4 of HARQ-ACK channel mapping;

图7为HARQ-ACK信道映射示意图五；FIG. 7 is a schematic diagram five of HARQ-ACK channel mapping;

图8为HARQ-ACK信道映射示意图六；FIG. 8 is a schematic diagram six of HARQ-ACK channel mapping;

图9为HARQ-ACK信道映射示意图七；FIG. 9 is a schematic diagram 7 of HARQ-ACK channel mapping;

图10为HARQ-ACK信道映射示意图八；FIG. 10 is a schematic diagram eight of HARQ-ACK channel mapping;

图11为利用ARO控制HARQ-ACK信道开销的示意图一；FIG. 11 is a schematic diagram 1 of using ARO to control HARQ-ACK channel overhead;

图12为利用ARO控制HARQ-ACK信道开销的示意图二；FIG. 12 is a schematic diagram 2 of using ARO to control HARQ-ACK channel overhead;

图13为利用ARO控制HARQ-ACK信道开销的示意图三；FIG. 13 is a schematic diagram 3 of using ARO to control HARQ-ACK channel overhead;

图14为利用ARO控制HARQ-ACK信道开销的示意图四；FIG. 14 is a schematic diagram 4 of using ARO to control HARQ-ACK channel overhead;

图15为利用ARO控制HARQ-ACK信道开销的示意图五；FIG. 15 is a schematic diagram 5 of controlling HARQ-ACK channel overhead by using ARO;

图16为本申请中HARQ-ACK信息传输的用户设备的结构示意图。FIG. 16 is a schematic structural diagram of a user equipment for HARQ-ACK information transmission in this application.

具体实施方式Detailed ways

为了使本申请的目的、技术手段和优点更加清楚明白，以下结合附图对本申请做进一步详细说明。In order to make the purpose, technical means and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings.

在上下行配置可以快速变化的TDD系统中，上下行子帧分布是快速变化的，为了保证对下行数据的HARQ传输可以正常进行，一种方法是按照一个下行参考上下行配置来确定HARQ-ACK定时。这里，下行参考上下行配置中的下行子帧是快速变化的所有可能出现的实际上下行配置中的下行子帧的超集，从而根据下行参考上下行配置得到任意一个实际下行子帧的HARQ-ACK定时。In a TDD system where uplink and downlink configurations can change rapidly, the distribution of uplink and downlink subframes changes rapidly. In order to ensure that the HARQ transmission of downlink data can be carried out normally, one method is to determine HARQ-ACK according to a downlink reference uplink and downlink configuration. timing. Here, the downlink subframe in the downlink reference uplink and downlink configuration is a superset of all possible downlink subframes in the actual downlink configuration that changes rapidly, so that the HARQ- ACK timing.

在确定下行数据传输的HARQ定时之后，还需要分配用于传输HARQ-ACK的信道资源，并在分配的HARQ-ACK信道上反馈HARQ-ACK信息。本申请提供了根据UE的PDCCH或者EPDCCH得到其对应分配的HARQ-ACK信道并利用该信道传输HARQ-ACK信息的方法。如图2是本申请总体方法的流程图。这里，假设已经获得了下行参考上下行配置，它可以是用高层信令，例如RRC信令半静态配置的；或者，也可以是预定义的，例如，固定使用下行参考上下行配置5。After determining the HARQ timing for downlink data transmission, it is also necessary to allocate channel resources for HARQ-ACK transmission, and feed back HARQ-ACK information on the allocated HARQ-ACK channel. This application provides a method for obtaining the corresponding allocated HARQ-ACK channel according to the PDCCH or EPDCCH of the UE and using the channel to transmit HARQ-ACK information. Figure 2 is a flow chart of the overall method of the present application. Here, it is assumed that the downlink reference uplink and downlink configuration has been obtained, which may be semi-statically configured by high-layer signaling, such as RRC signaling; or may be predefined, for example, the downlink reference uplink and downlink configuration 5 is fixedly used.

步骤201：UE检测基站发送的调度下行传输的PDCCH或者EPDCCH（DLGrant），并相应地接收调度的PDSCH。Step 201: The UE detects the PDCCH or EPDCCH (DL Grant) sent by the base station to schedule downlink transmission, and receives the scheduled PDSCH accordingly.

这里，UE可以检测基站发送的指示当前实际上下行重配置信息的物理层信令，得到当前的实际上下行配置。上述物理层信令可以是重用PDCCH或者EPDCCH来发送的。根据当前的实际上下行配置，UE可以知道需要在哪些子帧上检测DL Grant并接收相应的PDSCH。根据PDCCH或者EPDCCH的链路性能要求，误检测率是1%。实际上，还可以通过增加聚合级别或者提高发射功率的方法来进一步提高其可靠性。Here, the UE may detect the physical layer signaling indicating the current actual downlink reconfiguration information sent by the base station, and obtain the current actual downlink configuration. The foregoing physical layer signaling may be sent by reusing the PDCCH or EPDCCH. According to the current actual downlink configuration, the UE can know which subframes need to detect the DL Grant and receive the corresponding PDSCH. According to the link performance requirement of PDCCH or EPDCCH, the false detection rate is 1%. In fact, the reliability can be further improved by increasing the aggregation level or increasing the transmit power.

步骤202：UE根据上述PDCCH的CCE索引或者EPDCCH的ECCE索引，得到映射的HARQ-ACK信道。Step 202: The UE obtains the mapped HARQ-ACK channel according to the above-mentioned CCE index of the PDCCH or the ECCE index of the EPDCCH.

在根据PDCCH或者EPDCCH确定HARQ-ACK信道时，可以根据上述上下行重配置物理层信令来提高上行资源利用率。这适用于上下行重配置物理层信令可靠性很高的情况。但是，上下行重配置物理层信令总之是有可能出错的，所以本申请下面的实施例一中提出一种降低上下行重配置物理层信令的影响的方法。When determining the HARQ-ACK channel according to the PDCCH or EPDCCH, the uplink resource utilization rate can be improved according to the above-mentioned uplink and downlink reconfiguration physical layer signaling. This is applicable to the case where the reliability of the uplink and downlink reconfiguration physical layer signaling is high. However, the uplink and downlink reconfiguration physical layer signaling may be wrong anyway, so a method for reducing the impact of the uplink and downlink reconfiguration physical layer signaling is proposed in the following embodiment 1 of this application.

另外，在现有LTE系统的处理EPDCCH的隐含HARQ-ACK信道分配时，通过在DL Grant中增加2比特HARQ-ACK资源偏移（ARO）来提高基站分配HARQ-ACK信道的灵活性。考虑到上述上下行配置快速变化的TDD系统一般是小小区，其服务的用户数目比较少，这导致现有ARO的使用方法可能造成上行资源浪费，所以本发明下面的实施例二中提出一种优化ARO应用从而提高上行资源利用率的方法。In addition, when processing the implicit HARQ-ACK channel allocation of EPDCCH in the existing LTE system, the flexibility of HARQ-ACK channel allocation by the base station is improved by adding 2 bits of HARQ-ACK resource offset (ARO) in DL Grant. Considering that the above-mentioned TDD system whose uplink and downlink configurations change rapidly is generally a small cell, the number of users served by it is relatively small, which leads to the waste of uplink resources in the existing ARO usage method, so the following embodiment 2 of the present invention proposes a A method for optimizing ARO application to improve uplink resource utilization.

在LTE系统中，上述根据PDCCH或者EPDCCH确定的HARQ-ACK信道是指PUCCH格式1a/1b信道。In the LTE system, the aforementioned HARQ-ACK channel determined according to the PDCCH or EPDCCH refers to the PUCCH format 1a/1b channel.

步骤203：UE传输HARQ-ACK信息。Step 203: UE transmits HARQ-ACK information.

下面对应步骤202分别描述本申请给出的两种分配HARQ-ACK信道的优选实施例。Corresponding to step 202, two preferred embodiments of allocating HARQ-ACK channels given in this application are described below.

实施例一；Embodiment one;

对上下行配置快速变化的TDD系统，假设根据下行参考上下行配置来确定下行传输的HARQ定时，相应的绑定窗口称为参考绑定窗口。在上下行配置快速变化的TDD系统中，通过发送重配置信令可以通知UE当前的实际上下行配置。这样，在UE正确接收重配置信令的前提下，UE可以确切知道在参考绑定窗口中的哪些子帧当前实际用于下行传输。对UE没有正确接收重配置信令的情况，因为下行参考上下行配置是知道的，所以UE仍然可以对参考绑定窗口内的所有可能的下行子帧都检测DL Grant和PDSCH，然后根据下行参考上下行配置的HARQ定时来反馈HARQ-ACK信息。也就是说，虽然UE不确定参考绑定窗口中的哪些子帧当前实际用于下行传输，但是实际上还是可以继续对下行数据进行HARQ传输。For a TDD system in which uplink and downlink configurations change rapidly, it is assumed that the HARQ timing of downlink transmission is determined according to downlink reference uplink and downlink configurations, and the corresponding binding window is called a reference binding window. In a TDD system where the uplink and downlink configurations change rapidly, the current actual downlink configuration can be notified to the UE by sending reconfiguration signaling. In this way, on the premise that the UE correctly receives the reconfiguration signaling, the UE can know exactly which subframes in the reference bundling window are currently actually used for downlink transmission. If the UE does not receive the reconfiguration signaling correctly, because the downlink reference uplink and downlink configuration is known, the UE can still detect DL Grant and PDSCH for all possible downlink subframes within the reference binding window, and then according to the downlink reference The HARQ configured in the uplink and downlink is used to feed back the HARQ-ACK information at regular intervals. That is to say, although the UE does not know which subframes in the reference binding window are actually used for downlink transmission, it can actually continue to perform HARQ transmission on downlink data.

基于上述分析，本申请提出下面的为CCE或者ECCE映射HARQ-ACK信道的方法，从而UE根据其检测的DL Grant可以得到映射的HARQ-ACK信道。在映射HARQ-ACK信道时，可以是参考绑定窗口中的所有子帧分为固定下行子帧和灵活子帧，或者，考虑根据SIB1上下行配置可能已经为参考绑定窗口中的部分子帧分配了HARQ-ACK信道，因此还可以是参考绑定窗口中除根据SIB1上下行配置已分配HARQ-ACK信道的子帧之外的其他子帧，分为固定下行子帧和灵活子帧。无论是上述哪一种区分固定下行子帧和灵活子帧的方法，本申请都进一步使固定下行子帧的CCE或者ECCE映射的HARQ-ACK信道独立于灵活子帧，这样固定下行子帧的HARQ-ACK信道的分配可以不受灵活子帧影响。这里，固定下行子帧是指在所述上下行配置快速变化的TDD系统中，在所有可能出现的实际上下行配置中都是下行子帧的子帧；对应地，灵活子帧是指在一部分可能出现的实际上下行配置中是下行子帧而在其他可能出现的实际上下行配置中是上行子帧。Based on the above analysis, this application proposes the following method for mapping the HARQ-ACK channel for the CCE or ECCE, so that the UE can obtain the mapped HARQ-ACK channel according to the detected DL Grant. When mapping the HARQ-ACK channel, all subframes in the reference binding window can be divided into fixed downlink subframes and flexible subframes, or, considering that the SIB1 uplink and downlink configuration may have been part of the subframes in the reference binding window The HARQ-ACK channel is allocated, so it can also refer to other subframes in the binding window except the subframes that have been allocated HARQ-ACK channels according to the SIB1 uplink and downlink configuration, which are divided into fixed downlink subframes and flexible subframes. No matter which method is used to distinguish fixed downlink subframes from flexible subframes, this application further makes the HARQ-ACK channel mapped by the CCE or ECCE of the fixed downlink subframe independent of the flexible subframe, so that the HARQ channel of the fixed downlink subframe - Allocation of ACK channels may not be affected by flexible subframes. Here, a fixed downlink subframe refers to a subframe that is a downlink subframe in all possible actual downlink configurations in the TDD system in which the uplink and downlink configurations change rapidly; correspondingly, a flexible subframe refers to a subframe in a part of The actual downlink configuration that may appear is a downlink subframe and the actual downlink configuration that may appear is an uplink subframe.

对灵活子帧，可以有两种处理方法。一种处理方法是因为UE有可能不能正确接收重配置信令，导致不知道当前实际上下行配置，可以总是对参考绑定窗口中的所有灵活子帧预留HARQ-ACK信道。另一种处理方法是假设重配置信令可靠性很高，从而可以只对当前实际上下行配置中是用于下行传输的灵活子帧预留HARQ-ACK信道。For flexible subframes, there are two processing methods. One way to deal with it is because the UE may not be able to receive the reconfiguration signaling correctly, resulting in not knowing the current actual downlink configuration, it can always reserve the HARQ-ACK channel for all flexible subframes in the reference binding window. Another processing method is to assume that the reliability of the reconfiguration signaling is high, so that the HARQ-ACK channel can be reserved only for the flexible subframes actually used for downlink transmission in the current downlink configuration.

接下来，为保证固定下行子帧的CCE或者ECCE映射的HARQ-ACK信道独立于灵活子帧，下面给出几种具体的方法：Next, in order to ensure that the HARQ-ACK channel mapped by the CCE or ECCE of the fixed downlink subframe is independent of the flexible subframe, several specific methods are given below:

第一种方法是为CCE映射HARQ-ACK信道，或者为每一个EPDCCH集的ECCE映射HARQ-ACK信道时，将参考绑定窗口中的所有子帧区分为固定下行子帧集合和灵活子帧集合，并分别配置专用的HARQ-ACK信道起始偏移，记为和和可以相同或者不同。作为一个特例，如果固定和相同，则可以只配置一个参数从而降低信令开销。以下行参考上下行配置5为例，参考绑定窗口包括子帧n-k，k∈K＝{13,12,9,8,7,5,4,11,6},n为反馈HARQ-ACK的上行子帧。其中，K_fixed＝{12, 7, 11, 6}对应固定下行子帧集合，而K_flexible＝{13,9,8,5,4}对应灵活子帧集合。本申请划分两个子帧集合K_fixed和K_flexible，但是不限制集合K_fixed和K_flexible内各个元素的排列顺序。这样，设置固定下行子帧集合K_fixed按照为起始位置分配HARQ-ACK信道，并设置灵活子帧集合K_flexible按照为起始位置分配HARQ-ACK信道。The first method is to map the HARQ-ACK channel for the CCE, or when mapping the HARQ-ACK channel for the ECCE of each EPDCCH set, distinguish all subframes in the reference binding window into a fixed downlink subframe set and a flexible subframe set , and configure the dedicated HARQ-ACK channel start offset respectively, denoted as and and Can be the same or different. As a special case, if fixed and If they are the same, only one parameter can be configured to reduce signaling overhead. Take the downlink reference uplink and downlink configuration 5 as an example, the reference binding window includes subframe nk, k∈K={13,12,9,8,7,5,4,11,6}, n is the feedback HARQ-ACK uplink subframe. Wherein, K_fixed ={12, 7, 11, 6} corresponds to a set of fixed downlink subframes, and K_flexible ={13,9,8,5,4} corresponds to a set of flexible subframes. This application divides two subframe sets K_fixed and K_flexible , but does not limit the arrangement order of elements in the sets K_fixed and K_flexible . In this way, the fixed downlink subframe set K_fixed is set according to Assign a HARQ-ACK channel to the starting position, and set the flexible subframe set K_flexible according to A HARQ-ACK channel is allocated for the starting position.

对PDCCH，可以是对固定下行子帧集合和灵活子帧集合分别采用块交织的方法映射HARQ-ACK资源。如果按照上述第一种处理灵活子帧的方法，即为参考绑定窗口内的所有灵活子帧预留HARQ-ACK信道，并对固定下行子帧集合和灵活下行子帧集合中的所有子帧分别采用块交织的方法映射HARQ-ACK资源。如图3所示是处理PDCCH的HARQ-ACK信道映射的示意图。对固定下行子帧集合K_fixed，M_fixed是集合内的元素总数，m是集合内各个元素的索引，m＝0,1,...M_fixed-1，则第m个子帧内的CCE索引n_CCE映射的HARQ-ACK信道索引为$n_{\mathrm{PUCCH}}^{\left(1\right)}=(M_{\mathrm{fixed}}-m-1)\&times;N_p+m\&times;N_{p+1}+n_{\mathrm{CCE}}+N_{\mathrm{PUCCH},\mathrm{fixed}}^{\left(1\right)},$其中，选择合适的参数p使N_p≤n_CCE＜N_p+1，对灵活子帧集合K_flexible，M_flexible是集合内的元素总数，m是集合内各个元素的索引，m＝0,1,...M_flexible-1，则第m个子帧内的CCE索引n_CCE映射的HARQ-ACK信道索引为$n_{\mathrm{PUCCH}}^{\left(1\right)}=(M_{\mathrm{flexible}}-m-1)\&times;N_p+m\&times;N_{p+1}+n_{\mathrm{CCE}}+N_{\mathrm{PUCCH},\mathrm{flexible}}^{\left(1\right)},$其中，选择合适的参数p使N_p≤n_CCE＜N_p+1，For the PDCCH, the fixed downlink subframe set and the flexible subframe set may be respectively mapped to HARQ-ACK resources by means of block interleaving. If the flexible subframe is processed according to the first method above, the HARQ-ACK channel is reserved for all flexible subframes in the reference binding window, and all subframes in the fixed downlink subframe set and flexible downlink subframe set HARQ-ACK resources are mapped by block interleaving method respectively. As shown in FIG. 3 , it is a schematic diagram of processing HARQ-ACK channel mapping of PDCCH. For the fixed downlink subframe set K_fixed , M_fixed is the total number of elements in the set, m is the index of each element in the set, m=0,1,...M_fixed -1, then the CCE index in the mth subframe The HARQ-ACK channel index mapped by n_CCE is${\mathrm{no}}_{\mathrm{PUCCH}}^{\left(1\right)}=(m_{\mathrm{fixed}}-m-1)\&times;N_p+m\&times;N_{p+1}+{\mathrm{no}}_{\mathrm{CCE}}+N_{\mathrm{PUCCH},\mathrm{fixed}}^{\left(1\right)},$ Among them, choose the appropriate parameter p to make N_p ≤ n_CCE <N_p+1 , For the flexible subframe set K_flexible , M_flexible is the total number of elements in the set, m is the index of each element in the set, m=0,1,...M_flexible -1, then the CCE index n in the mth subframe The HARQ-ACK channel index mapped by_CCE is${\mathrm{no}}_{\mathrm{PUCCH}}^{\left(1\right)}=(m_{\mathrm{flexible}}-m-1)\&times;N_p+m\&times;N_{p+1}+{\mathrm{no}}_{\mathrm{CCE}}+N_{\mathrm{PUCCH},\mathrm{flexible}}^{\left(1\right)},$ Among them, choose the appropriate parameter p to make N_p ≤ n_CCE <N_p+1 ,

如果按照上述第二种处理灵活子帧的方法，只对当前实际上下行配置指示为下行子帧的灵活子帧预留HARQ-ACK信道，并对固定下行子帧集合和当前实际上下行配置指示为下行子帧的灵活子帧分别采用块交织的方法映射HARQ-ACK资源。可以根据重配置信令配置的实际上下行配置确定灵活子帧集合K_flexible中当前实际下行子帧组成的集合为K_flexible的子集，其中仅包含集合K_flexible中被实际上下行配置指示为下行子帧的灵活子帧，然后只为集合的子帧预留HARQ-ACK信道。具体的说，对集合是集合内的元素总数，的大小取决于根据实际上下行配置得到的参考绑定窗口内的实际下行子帧数，m是集合内各个元素的索引，则第m个子帧内的CCE索引n_CCE映射的HARQ-ACK信道索引为$n_{\mathrm{PUCCH}}^{\left(1\right)}=(M_{\mathrm{flexible}}^{\mathrm{DL}}-m-1)\&times;N_p+m\&times;N_{p+1}+n_{\mathrm{CCE}}+N_{\mathrm{PUCCH},\mathrm{flexible}}^{\left(1\right)},$其中，选择合适的参数p使N_p≤n_CCE＜N_p+1，If the above-mentioned second method of processing flexible subframes is used, only the current actual downlink configuration indicates that the HARQ-ACK channel is reserved for the flexible subframe of the downlink subframe, and the set of fixed downlink subframes and the current actual downlink configuration indicate The flexible subframes of the downlink subframes are respectively mapped to HARQ-ACK resources by means of block interleaving. The set of current actual downlink subframes in the flexible subframe set K_flexible can be determined according to the actual downlink configuration configured in the reconfiguration signaling is a subset of K_flexible , which only includes the flexible subframes in the set K_flexible that are actually indicated as downlink subframes by the downlink configuration, and then only for the set The HARQ-ACK channel is reserved for subframes. Specifically, for the collection is the total number of elements in the set, The size of depends on the actual number of downlink subframes in the reference binding window obtained according to the actual downlink configuration, m is the index of each element in the set, Then the HARQ-ACK channel index mapped to the CCE index n_CCE in the mth subframe is${\mathrm{no}}_{\mathrm{PUCCH}}^{\left(1\right)}=(m_{\mathrm{flexible}}^{\mathrm{DL}}-m-1)\&times;N_p+m\&times;N_{p+1}+{\mathrm{no}}_{\mathrm{CCE}}+N_{\mathrm{PUCCH},\mathrm{flexible}}^{\left(1\right)},$ Among them, choose the appropriate parameter p to make N_p ≤ n_CCE <N_p+1 ,

对EPDCCH，对每个EPDCCH集，如果按照上述第一种处理灵活子帧的方法，即为参考绑定窗口内的所有灵活子帧都需要预留HARQ-ACK信道，下面描述为第q个EPDCCH集的ECCE映射HARQ-ACK信道的方法。如图6所示是处理EPDCCH的HARQ-ACK信道映射的示意图。为固定下行子帧集合和灵活子帧集合中的第q个EPDCCH集分别配置专用的HARQ-ACK信道起始偏移，记为和对固定下行子帧集合K_fixed，M_fixed是集合内的元素总数，m是集合内各个元素的索引，m＝0,1,...M_fixed-1，则第m个子帧内的ECCE映射的HARQ-ACK信道的起始索引为对灵活子帧集合K_flexible，M_flexible是集合内的元素总数，m是集合内各个元素的索引，m＝0,1,...M_flexible-1，则第m个子帧内的ECCE映射的HARQ-ACK信道的起始索引为其中是子帧n-k_j内的第q个EPDCCH集的ECCE的总数，在LTE版本11中q＝0,1。For EPDCCH, for each EPDCCH set, if the above-mentioned first method for processing flexible subframes is used, the HARQ-ACK channel needs to be reserved for all flexible subframes in the reference binding window, which is described below as the qth EPDCCH A method for mapping the HARQ-ACK channel of a set of ECCEs. FIG. 6 is a schematic diagram of HARQ-ACK channel mapping for processing EPDCCH. Configure a dedicated HARQ-ACK channel start offset for the qth EPDCCH set in the fixed downlink subframe set and the flexible subframe set, denoted as and For the fixed downlink subframe set K_fixed , M_fixed is the total number of elements in the set, m is the index of each element in the set, m=0,1,...M_fixed -1, then the ECCE mapping in the mth subframe The starting index of the HARQ-ACK channel is For the flexible subframe set K_flexible , M_flexible is the total number of elements in the set, m is the index of each element in the set, m=0,1,...M_flexible -1, then the ECCE mapping in the mth subframe The starting index of the HARQ-ACK channel is in is the total number of ECCEs of the qth EPDCCH set in subframe nk_j , q=0,1 in LTE Release 11.

如果按照上述第二种处理灵活子帧的方法，即只对当前实际上下行配置指示为下行子帧的灵活子帧预留HARQ-ACK信道，可以根据重配置信令配置的实际上下行配置确定灵活子帧集合K_flexible中当前实际下行子帧组成的集合为K_flexible的子集，其中仅包含集合K_flexible中被实际上下行配置指示为下行子帧的灵活子帧，然后只为集合的子帧预留HARQ-ACK信道。具体的说，对集合是集合内的元素总数，的大小取决于根据实际上下行配置得到的参考绑定窗口内的实际下行子帧数，m是集合内各个元素的索引，则第m个子帧内的ECCE索引n_ECCE映射的HARQ-ACK信道索引为其中是子帧n-k_j内的第q个EPDCCH集的ECCE的总数，在LTE版本11中q＝0,1。If the above-mentioned second method of processing flexible subframes is used, that is, only the HARQ-ACK channel is reserved for the flexible subframes indicated by the current actual downlink configuration as downlink subframes, it can be determined according to the actual downlink configuration configured in the reconfiguration signaling A set of current actual downlink subframes in the flexible subframe set K_flexible is a subset of K_flexible , which only includes the flexible subframes in the set K_flexible that are actually indicated as downlink subframes by the downlink configuration, and then only for the set The HARQ-ACK channel is reserved for subframes. Specifically, for the collection is the total number of elements in the set, The size of depends on the actual number of downlink subframes in the reference binding window obtained according to the actual downlink configuration, m is the index of each element in the set, Then the HARQ-ACK channel index mapped to the ECCE index n_ECCE in the mth subframe is in is the total number of ECCEs of the qth EPDCCH set in subframe nk_j , q=0,1 in LTE Release 11.

第二种方法是为CCE映射HARQ-ACK信道，或者为每一个EPDCCH集的ECCE映射HARQ-ACK信道时，将参考绑定窗口中的所有子帧区分为固定下行子帧集合和灵活子帧集合，重新设置一个HARQ-ACK信道起始偏移从开始，首先映射所有固定下行子帧的HARQ-ACK信道，紧接着映射灵活子帧的HARQ-ACK信道。如第一种方法中一样划分两个子帧集合K_fixed和K_flexible，但是不限制集合K_fixed和K_flexible内各个元素的排列顺序。以下行参考上下行配置5为例，从开始，首先分配4个子帧K_fixed＝{12,7,11,6}的HARQ-ACK信道，紧跟着分配其他5个子帧K_flexible＝{13,9,8,5,4}的HARQ-ACK信道。The second method is to map the HARQ-ACK channel for the CCE, or when mapping the HARQ-ACK channel for the ECCE of each EPDCCH set, distinguish all subframes in the reference binding window into a fixed downlink subframe set and a flexible subframe set , reset a HARQ-ACK channel start offset from Initially, the HARQ-ACK channels of all fixed downlink subframes are first mapped, and then the HARQ-ACK channels of flexible subframes are mapped. The two subframe sets K_fixed and K_flexible are divided as in the first method, but the sequence of elements in the sets K_fixed and K_flexible is not limited. The following line refers to the uplink and downlink configuration 5 as an example, from Initially, the HARQ-ACK channels of 4 subframes K_fixed ={12,7,11,6} are allocated first, followed by the allocation of the other 5 subframes K_flexible ={13,9,8,5,4} of HARQ- ACK channel.

对PDCCH，可以是对固定下行子帧集合和灵活子帧集合分别采用块交织的方法映射HARQ-ACK资源。如果按照上述第一种处理灵活子帧的方法，即为参考绑定窗口内的所有灵活子帧预留HARQ-ACK信道，并对固定下行子帧集合和灵活下行子帧集合中的所有子帧分别采用块交织的方法映射HARQ-ACK资源。如图5所示是处理PDCCH的HARQ-ACK信道映射的示意图。对固定下行子帧集合K_fixed，从起始偏移开始映射固定下行子帧集合的HARQ-ACK信道，记固定下行子帧集合的CCE总数为N_fixed，则对灵活子帧集合K_flexible从偏移开始映射HARQ-ACK信道。对固定下行子帧集合K_fixed，第m个子帧内的CCE索引n_CCE映射的HARQ-ACK信道索引为$n_{\mathrm{PUCCH}}^{\left(1\right)}=(M_{\mathrm{fixed}}-m-1)\&times;N_p+m\&times;N_{p+1}+n_{\mathrm{CCE}}+N_{\mathrm{PUCCH},\mathrm{eIMTA}}^{\left(1\right)},$其中，m＝0,1,...M_fixed-1，M_fixed是集合K_fixed内的元素总数，选择合适的参数p使N_p≤n_CCE＜N_p+1，对灵活子帧集合K_flexible，第m个子帧内的CCE索引n_CCE映射的HARQ-ACK信道索引为$n_{\mathrm{PUCCH}}^{\left(1\right)}=(M_{\mathrm{flexible}}-m-1)\&times;N_p+m\&times;N_{p+1}+n_{\mathrm{CCE}}+N_{\mathrm{PUCCH},\mathrm{eIMTA}}^{\left(1\right)}+N_{\mathrm{fixed}},$其中，m＝0,1,...M_flexible-1，M_flexible是集合内的元素总数，选择合适的参数p使N_p≤n_CCE＜N_p+1，For the PDCCH, the fixed downlink subframe set and the flexible subframe set may be respectively mapped to HARQ-ACK resources by means of block interleaving. If the flexible subframe is processed according to the first method above, the HARQ-ACK channel is reserved for all flexible subframes in the reference binding window, and all subframes in the fixed downlink subframe set and flexible downlink subframe set HARQ-ACK resources are mapped by block interleaving method respectively. As shown in FIG. 5 , it is a schematic diagram of processing HARQ-ACK channel mapping of PDCCH. For the fixed downlink subframe set K_fixed , offset from the start Start to map the HARQ-ACK channel of the fixed downlink subframe set, record the total number of CCEs in the fixed downlink subframe set as N_fixed , then the flexible subframe set K_flexible is offset from Start mapping the HARQ-ACK channel. For the fixed downlink subframe set K_fixed , the HARQ-ACK channel index mapped to the CCE index n_CCE in the mth subframe is${\mathrm{no}}_{\mathrm{PUCCH}}^{\left(1\right)}=(m_{\mathrm{fixed}}-m-1)\&times;N_p+m\&times;N_{p+1}+{\mathrm{no}}_{\mathrm{CCE}}+N_{\mathrm{PUCCH},\mathrm{eIMTA}}^{\left(1\right)},$ Among them, m=0,1,...M_fixed -1, M_fixed is the total number of elements in the set K_fixed , choose an appropriate parameter p to make N_p ≤ n_CCE <N_p+1 , For the flexible subframe set K_flexible , the HARQ-ACK channel index mapped to the CCE index n_CCE in the mth subframe is${\mathrm{no}}_{\mathrm{PUCCH}}^{\left(1\right)}=(m_{\mathrm{flexible}}-m-1)\&times;N_p+m\&times;N_{p+1}+{\mathrm{no}}_{\mathrm{CCE}}+N_{\mathrm{PUCCH},\mathrm{eIMTA}}^{\left(1\right)}+N_{\mathrm{fixed}},$ Among them, m=0,1,...M_flexible -1, M_flexible is the total number of elements in the set, choose an appropriate parameter p to make N_p ≤ n_CCE <N_p+1 ,

N_fixed是固定下行子帧集合K_fixed的CCE总数。N_fixed可以按照配置数目最多的OFDM符号用于传输PDCCH的情况来计算，以物理资源块个数大于10为例，p最大值为2，则可以定义N_fixed＝N₃·M_fixed。对参考上下行配置2，参考绑定窗口的最后一个子帧是DwPTS，他只有两个OFDM符号用于承载PDCCH，所以上述公式可以修正为N_fixed＝N₃·(M_fixed-1)+N₂。对参考上下行配置5，参考绑定窗口的最后两个子帧是DwPTS，所以上述公式可以修正为N_fixed＝N₃·(M_fixed-2)+2N₂。N_fixed is the total number of CCEs in the fixed downlink subframe set K_fixed . N_fixed can be calculated according to the situation that OFDM symbols with the largest number of configurations are used to transmit PDCCH, taking the number of physical resource blocks greater than 10 as an example, and the maximum value of p is 2, then N_fixed =N₃ ·M_fixed can be defined. For reference uplink and downlink configuration 2, the last subframe of the reference binding window is DwPTS, which has only two OFDM symbols for carrying PDCCH, so the above formula can be revised as N_fixed = N₃ ·(M_fixed -1)+N₂ . For the reference uplink and downlink configuration 5, the last two subframes of the reference binding window are DwPTS, so the above formula can be revised as N_fixed =N₃ ·(M_fixed -2)+2N₂ .

如果按照上述第二种处理灵活子帧的方法，只对当前实际上下行配置中是用于下行传输的灵活子帧预留HARQ-ACK信道，并对固定下行子帧集合和当前实际上下行配置指示为下行子帧的灵活子帧分别采用块交织的方法映射HARQ-ACK资源。可以根据重配置信令配置的实际上下行配置确定灵活子帧集合K_flexible中当前实际用于下行传输的子集然后只为集合的子帧预留HARQ-ACK信道。具体的说，对集合是集合内的元素总数，m是集合内各个元素的索引，则第m个子帧内的CCE索引n_CCE映射的HARQ-ACK信道索引为$n_{\mathrm{PUCCH}}^{\left(1\right)}=(M_{\mathrm{flexible}}^{\mathrm{DL}}-m-1)\&times;N_p+m\&times;N_{p+1}+n_{\mathrm{CCE}}+N_{\mathrm{PUCCH},\mathrm{eIMTA}}^{\left(1\right)},+N_{\mathrm{fixed}},$其中，选择合适的参数p使N_p≤n_CCE＜N_p+1，If the above-mentioned second method of processing flexible subframes is used, the HARQ-ACK channel is only reserved for the flexible subframes used for downlink transmission in the current actual downlink configuration, and the fixed downlink subframe set and the current actual downlink configuration The flexible subframes indicated as downlink subframes are respectively mapped to HARQ-ACK resources by means of block interleaving. The subset currently actually used for downlink transmission in the flexible subframe set K_flexible can be determined according to the actual downlink configuration configured in the reconfiguration signaling then only for collection The HARQ-ACK channel is reserved for subframes. Specifically, for the collection is the total number of elements in the collection, m is the index of each element in the collection, Then the HARQ-ACK channel index mapped to the CCE index n_CCE in the mth subframe is${\mathrm{no}}_{\mathrm{PUCCH}}^{\left(1\right)}=(m_{\mathrm{flexible}}^{\mathrm{DL}}-m-1)\&times;N_p+m\&times;N_{p+1}+{\mathrm{no}}_{\mathrm{CCE}}+N_{\mathrm{PUCCH},\mathrm{eIMTA}}^{\left(1\right)},+N_{\mathrm{fixed}},$ Among them, choose the appropriate parameter p to make N_p ≤ n_CCE <N_p+1 ,

对EPDCCH，对每一个EPDCCH集，如果按照上述第一种处理灵活子帧的方法，即为参考绑定窗口内的所有灵活子帧都需要预留HARQ-ACK信道，可以对参考绑定窗口的子帧重新排序，并使固定下行子帧在前，灵活子帧在后，记调整顺序之后的集合为K'＝{K_fjxed,K_flexible}；然后，从起始偏移开始，依次映射K'中各个子帧的HARQ-ACK信道。下面描述为第q个EPDCCH集的ECCE映射HARQ-ACK信道的方法，并记第q个EPDCCH集配置专用的HARQ-ACK信道起始偏移为如图6所示是处理EPDCCH的HARQ-ACK信道映射的示意图。以配置5为例，参考绑定窗口为K＝{13,12,9,8,7,5,4,11,6}，调整子帧次序得到K'＝{K_fjxed,K_flexible}＝{12,7,11,6,13,9,8,5,4}。则，第m个子帧内的ECCE映射的HARQ-ACK信道的起始索引为其中是子帧n-k_j内的第q个EPDCCH集的ECCE的总数，在LTE版本11中q＝0,1。For EPDCCH, for each EPDCCH set, if according to the above first method for processing flexible subframes, that is, all flexible subframes in the reference binding window need to reserve HARQ-ACK channels, you can set the reference binding window The subframes are reordered, and the fixed downlink subframes are in front, and the flexible subframes are in the back, and the set after adjusting the order is K'={K_fjxed ,K_flexible }; then, offset from the start Initially, the HARQ-ACK channels of each subframe in K' are sequentially mapped. The method for mapping the HARQ-ACK channel for the ECCE of the qth EPDCCH set is described below, and the starting offset of the dedicated HARQ-ACK channel configured for the qth EPDCCH set is FIG. 6 is a schematic diagram of HARQ-ACK channel mapping for processing EPDCCH. Taking configuration 5 as an example, the reference binding window is K={13,12,9,8,7,5,4,11,6}, and the order of subframes is adjusted to obtain K'={K_fjxed ,K_flexible }={ 12,7,11,6,13,9,8,5,4}. Then, the starting index of the HARQ-ACK channel mapped by the ECCE in the mth subframe is in is the total number of ECCEs of the qth EPDCCH set in subframe nk_j , q=0,1 in LTE Release 11.

如果按照上述第二种处理灵活子帧的方法，即只对当前实际上下行配置指示为下行子帧的灵活子帧预留HARQ-ACK信道，可以根据重配置信令配置的实际上下行配置确定灵活子帧集合K_flexible中当前实际下行子帧组成的子集然后只为集合的子帧预留HARQ-ACK信道。以配置5为例，参考绑定窗口为K＝{13,12,9,8,7,5,4,11,6}，K_flexible＝{13,9,8,5,4,}，假设当前实际上下行配置是配置1，则$K_{\mathrm{flexible}}^{\mathrm{DL}}=\left\{\mathrm{12,8,4}\right\},$调整子帧次序得到$K^{\&prime;}\{{\text{K}}_{\mathrm{fijxed}},K_{\mathrm{flexible}}^{\mathrm{DL}}\}=\left\{\mathrm{12,7,11,6,13,8,4}\right\}.$则，第m个子帧内的ECCE映射的HARQ-ACK信道的起始索引为其中是子帧n-k_j内的第q个EPDCCH集的ECCE的总数，在LTE版本11中q＝0,1。If the above-mentioned second method of processing flexible subframes is used, that is, only the HARQ-ACK channel is reserved for the flexible subframes indicated by the current actual downlink configuration as downlink subframes, it can be determined according to the actual downlink configuration configured in the reconfiguration signaling A subset of the current actual downlink subframes in the flexible subframe set K_flexible then only for collection The HARQ-ACK channel is reserved for subframes. Taking configuration 5 as an example, the reference binding window is K={13,12,9,8,7,5,4,11,6}, K_flexible ={13,9,8,5,4,}, assuming The current actual downlink configuration is configuration 1, then$K_{\mathrm{flexible}}^{\mathrm{DL}}=\left\{\mathrm{12,8,4}\right\},$ Adjust the subframe order to get$K^{\&prime;}\{{\text{K}}_{\mathrm{fijxed}},K_{\mathrm{flexible}}^{\mathrm{DL}}\}=\left\{\mathrm{12,7,11,6,13,8,4}\right\}.$ Then, the starting index of the HARQ-ACK channel mapped by the ECCE in the mth subframe is in is the total number of ECCEs of the qth EPDCCH set in subframe nk_j , q=0,1 in LTE Release 11.

第三种方法是为CCE映射HARQ-ACK信道，或者为每一个EPDCCH集的ECCE映射HARQ-ACK信道时，在按照下行参考上下行配置确定的反馈HARQ-ACK信息的上行子帧上，对参考绑定窗口内的一个可能的下行子帧，根据在SIB1上下行配置中是否对这个子帧已经在所述上行子帧上分配了HARQ-ACK信道来区别处理。对已经在所述上行子帧上分配了HARQ-ACK信道的子帧，则不需要分配额外的HARQ-ACK信道，记这部分子帧集合为K_legacy；对其他子帧，可以采用上述第一种方法，区分固定下行子帧集合K'_fixed和灵活子帧集合K'_flexible，分别配置专用的HARQ-ACK信道起始偏移，记为和从而分别映射HARQ-ACK信道。和可以不同或者相同。作为一个特例，如果固定和相同，则可以只配置一个参数从而降低信令开销。The third method is to map the HARQ-ACK channel for the CCE, or map the HARQ-ACK channel for the ECCE of each EPDCCH set, on the uplink subframe of the feedback HARQ-ACK information determined according to the downlink reference A possible downlink subframe within the binding window is handled differently according to whether the subframe has been allocated a HARQ-ACK channel on the uplink subframe in the SIB1 uplink-downlink configuration. For subframes to which HARQ-ACK channels have been allocated on the uplink subframes, there is no need to allocate additional HARQ-ACK channels, and this set of subframes is recorded as K_legacy ; for other subframes, the above-mentioned first In this method, the fixed downlink subframe set K'_fixed and the flexible subframe set K'_flexible are distinguished, and a dedicated HARQ-ACK channel start offset is configured respectively, which is denoted as and Thus, the HARQ-ACK channels are mapped respectively. and Can be different or the same. As a special case, if fixed and If they are the same, only one parameter can be configured to reduce signaling overhead.

如图7所示是处理PDCCH的HARQ-ACK信道映射的示意图。以下行参考上下行配置5为例，并进一步假设SIB1上下行配置为上下行配置0，这样，对需要反馈HARQ-ACK信息的上行子帧n，按照SIB1上下行配置0，以为起始偏移，已经为子帧n-6分配了HARQ-ACK信道，从而只需要为对应k∈K＝{13,12,9,8,7,5,4,11}的子帧分配HARQ-ACK信道。其中，k∈K'_fixed＝{12,7,11}对应固定下行子帧集合，而k∈K'_flexible＝{13,9,8,5,4}对应灵活子帧集合。接下来，按照上述第一种方法，对固定下行子帧集合K'_fixed按照为起始位置分配HARQ-ACK信道，并对灵活子帧集合K'_flexible按照为起始位置分配HARQ-ACK信道。As shown in FIG. 7 , it is a schematic diagram of processing HARQ-ACK channel mapping of PDCCH. The downlink refers to the uplink and downlink configuration 5 as an example, and further assumes that the SIB1 uplink and downlink configuration is the uplink and downlink configuration 0. In this way, for the uplink subframe n that needs to feed back HARQ-ACK information, follow the SIB1 uplink and downlink configuration 0, and For the start offset, the HARQ-ACK channel has been allocated for subframe n-6, so it only needs to allocate HARQ-ACK channel. Wherein, k∈K'_fixed ={12,7,11} corresponds to the fixed downlink subframe set, and k∈K'_flexible ={13,9,8,5,4} corresponds to the flexible subframe set. Next, according to the first method above, for the fixed downlink subframe set K'_fixed according to Assign a HARQ-ACK channel to the starting position, and set K'_flexible for the flexible subframe according to A HARQ-ACK channel is allocated for the starting position.

进一步地，如果按照上述第二种处理灵活子帧的方法，即只对当前实际上下行配置指示为下行子帧的灵活子帧预留HARQ-ACK信道，可以根据重配置信令配置的实际上下行配置确定灵活子帧集合K'_flexible中当前实际下行子帧组成的集合为K'_flexible的子集，其中仅包含集合K_flexible中被实际上下行配置指示为下行子帧的灵活子帧，然后只为集合的个子帧预留HARQ-ACK信道，是集合内的元素总数，其大小取决于绑定窗内的实际下行子帧数。Further, if the above-mentioned second method for processing flexible subframes is used, that is, only HARQ-ACK channels are reserved for flexible subframes whose current actual downlink configuration indicates that they are downlink subframes, the actual downlink The line configuration determines the set of current actual downlink subframes in the flexible subframe set K'_flexible is a subset of K'_flexible , which only contains the flexible subframes in the set K_flexible that are actually indicated as downlink subframes by the downlink configuration, and then only for the set of Subframes reserve the HARQ-ACK channel, is the total number of elements in the set, and its size depends on the actual number of downlink subframes in the binding window.

记根据SIB1上下行配置确定的对应同一个上行子帧的绑定窗口为K_SIB1。如果想保持固定下行子帧集合K'_fixed映射的HARQ-ACK信道和对K_SIB1的子帧分配的HARQ-ACK信道占用连续的资源，则可以使从而只需要配置参数这里，是现有系统对集合K_SIB1的下行子帧配置的HARQ-ACK信道起始偏移，N_SIB1是集合K_SIB1的CCE总数。Note that the binding window corresponding to the same uplink subframe determined according to the SIB1 uplink and downlink configuration is K_SIB1 . If you want to keep the HARQ-ACK channel mapped to the fixed downlink subframe set K'_fixed and the HARQ-ACK channel allocated to the subframe of K_SIB1 occupying continuous resources, you can use Thus only the configuration parameters are required here, is the HARQ-ACK channel start offset configured by the existing system for the downlink subframe of the set K_SIB1 , and N_SIB1 is the total number of CCEs of the set K_SIB1 .

如图8所示是处理EPDCCH的HARQ-ACK信道映射的示意图。以下行参考上下行配置5为例，并进一步假设SIB1上下行配置为上下行配置0。对第q个EPDCCH集，对需要反馈HARQ-ACK信息的上行子帧n，按照SIB1上下行配置0，以高层配置的参数为起始偏移，为子帧n-6分配了HARQ-ACK信道；然后再为对应k∈K＝{13,12,9,8,7,5,4,11}的子帧分配HARQ-ACK信道。其中，k∈K'_fixed＝{12,7,11}对应固定下行子帧集合，而k∈K'_flexible＝{13,9,8,5,4}对应灵活子帧集合。假设为固定下行子帧集合和灵活子帧集合中的第q个EPDCCH集分别配置专用的HARQ-ACK信道起始偏移，记为和接下来，按照上述第一种方法，对固定下行子帧集合K'fixed按照为起始位置分配HARQ-ACK信道，并对灵活子帧集合K'_flexible按照为起始位置分配HARQ-ACK信道。FIG. 8 is a schematic diagram of processing HARQ-ACK channel mapping of EPDCCH. For example, refer to the uplink and downlink configuration 5 for the downlink, and further assume that the uplink and downlink configuration of SIB1 is the uplink and downlink configuration 0. For the qth EPDCCH set, for the uplink subframe n that needs to feed back HARQ-ACK information, configure 0 for the uplink and downlink according to SIB1, and use the parameters configured by the higher layer For the start offset, a HARQ-ACK channel is allocated for subframe n-6; ACK channel. Wherein, k∈K'_fixed ={12,7,11} corresponds to the fixed downlink subframe set, and k∈K'_flexible ={13,9,8,5,4} corresponds to the flexible subframe set. Assume that a dedicated HARQ-ACK channel start offset is configured for the qth EPDCCH set in the fixed downlink subframe set and the flexible subframe set, denoted as and Next, according to the first method above, for the fixed downlink subframe set K'fixed according to Assign a HARQ-ACK channel to the starting position, and set K'_flexible for the flexible subframe according to A HARQ-ACK channel is allocated for the starting position.

这里，如果按照上述第二种处理灵活子帧的方法，即只对当前实际上下行配置指示为下行子帧的灵活子帧预留HARQ-ACK信道，可以根据重配置信令配置的实际上下行配置确定灵活子帧集合K'_flexible中当前实际下行子帧组成的集合为K'_flexible的子集，其中仅包含集合K_flexible中被实际上下行配置指示为下行子帧的灵活子帧，然后只为集合的个子帧预留HARQ-ACK信道，是集合内的元素总数，其大小取决于绑定窗内的实际下行子帧数。Here, if the above-mentioned second method for processing flexible subframes is used, that is, only the HARQ-ACK channel is reserved for the flexible subframes indicated by the current actual downlink configuration as downlink subframes, the actual downlink Configuration determines the set of current actual downlink subframes in the flexible subframe set K'_flexible is a subset of K'_flexible , which only contains the flexible subframes in the set K_flexible that are actually indicated as downlink subframes by the downlink configuration, and then only for the set of Subframes reserve the HARQ-ACK channel, is the total number of elements in the set, and its size depends on the actual number of downlink subframes in the binding window.

记根据SIB1上下行配置确定的对应同一个上行子帧的绑定窗口为K_SIB1。如果想保持固定下行子帧集合K'_fixed映射的HARQ-ACK信道和对K_SIB1的子帧分配的HARQ-ACK信道占用连续的资源，则可以使从而只需要配置参数这里，是现有系统对集合KSIB1的下行子帧配置的HARQ-ACK信道起始偏移，N_q,SIB1是集合K_SIB1的ECCE总数。Note that the binding window corresponding to the same uplink subframe determined according to the SIB1 uplink and downlink configuration is K_SIB1 . If you want to keep the HARQ-ACK channel mapped to the fixed downlink subframe set K'_fixed and the HARQ-ACK channel allocated to the subframe of K_SIB1 occupying continuous resources, you can use Thus only the configuration parameters are required here, is the HARQ-ACK channel starting offset configured by the existing system for the downlink subframe of the set KSIB1, and N_{q, SIB1} is the total number of ECCEs of the set K_SIB1 .

第四种方法是为CCE映射HARQ-ACK信道，或者为每一个EPDCCH集的ECCE映射HARQ-ACK信道时，在按照下行参考上下行配置确定的反馈HARQ-ACK信息的上行子帧上，对参考绑定窗口内的一个可能的下行子帧，根据在SIB1上下行配置中是否对这个子帧已经在所述上行子帧上分配了HARQ-ACK信道来区别处理。对已经在所述上行子帧上分配了HARQ-ACK信道的子帧，则不需要分配额外的HARQ-ACK信道，记这部分子帧集合为K_legacy；对其他子帧，可以采用上述第二种方法，区分固定下行子帧集合K'_fixed和灵活子帧集合K'_flexible，配置一个HARQ-ACK信道起始偏移从开始，首先映射所有固定下行子帧的HARQ-ACK信道，紧接着映射灵活子帧的HARQ-ACK信道。The fourth method is to map the HARQ-ACK channel for the CCE, or map the HARQ-ACK channel for the ECCE of each EPDCCH set, on the uplink subframe of the feedback HARQ-ACK information determined according to the downlink reference A possible downlink subframe within the binding window is handled differently according to whether the subframe has been allocated a HARQ-ACK channel on the uplink subframe in the SIB1 uplink-downlink configuration. For subframes that have allocated HARQ-ACK channels on the uplink subframes, there is no need to allocate additional HARQ-ACK channels, and this set of subframes is recorded as K_legacy ; for other subframes, the above-mentioned second A method to distinguish the fixed downlink subframe set K'_fixed from the flexible subframe set K'_flexible , and configure a HARQ-ACK channel start offset from Initially, the HARQ-ACK channels of all fixed downlink subframes are first mapped, and then the HARQ-ACK channels of flexible subframes are mapped.

如图9所示是处理PDCCH的HARQ-ACK信道映射的示意图。以下行参考上下行配置5为例，并进一步假设SIB1上下行配置为上下行配置0，这样，对需要反馈HARQ-ACK信息的上行子帧n，按照SIB1上下行配置0，已经为子帧n-6分配了HARQ-ACK信道，从而只需要为对应k∈K＝{13,12,9,8,7,5,4,11}的子帧分配HARQ-ACK信道。其中，k∈K'_fixed＝{12,7,11}对应固定下行子帧集合，而k∈K'_flexible＝{13,9,8,5,4}对应灵活子帧集合。按照上述第二种方法，从起始偏移开始映射固定下行子帧集合K'_fixed的HARQ-ACK信道；记固定下行子帧集合K'_fixed的CCE总数为N_fixed，则从偏移开始映射灵活子帧集合K'_flexible的HARQ-ACK信道。FIG. 9 is a schematic diagram of processing HARQ-ACK channel mapping of PDCCH. Refer to the uplink and downlink configuration 5 in the downlink as an example, and further assume that the uplink and downlink configuration of SIB1 is configured as uplink and downlink configuration 0. In this way, for the uplink subframe n that needs to feed back HARQ-ACK information, according to SIB1 uplink and downlink configuration 0, it is already subframe n -6 allocates the HARQ-ACK channel, so that only the subframes corresponding to k∈K={13, 12, 9, 8, 7, 5, 4, 11} need to allocate the HARQ-ACK channel. Wherein, k∈K'_fixed ={12,7,11} corresponds to the fixed downlink subframe set, and k∈K'_flexible ={13,9,8,5,4} corresponds to the flexible subframe set. According to the second method above, offset from the starting Start to map the HARQ-ACK channel of the fixed downlink subframe set K'_fixed; note that the total number of CCEs of the fixed downlink subframe set K'_fixed is N_fixed , then from the offset Start mapping the HARQ-ACK channel of the flexible subframe set K'_flexible .

进一步地，如果按照上述第二种处理灵活子帧的方法，即只对当前实际上下行配置指示为下行子帧的灵活子帧预留HARQ-ACK信道，可以根据重配置信令配置的实际上下行配置确定灵活子帧集合K'_flexible中当前实际下行子帧组成的集合为K'_flexible的子集，其中仅包含集合K_flexible中被实际上下行配置指示为下行子帧的灵活子帧，然后只为集合的个子帧预留HARQ-ACK信道，是集合内的元素总数，其大小取决于绑定窗内的实际下行子帧数。Further, if the above-mentioned second method for processing flexible subframes is used, that is, only HARQ-ACK channels are reserved for flexible subframes whose current actual downlink configuration indicates that they are downlink subframes, the actual downlink The line configuration determines the set of current actual downlink subframes in the flexible subframe set K'_flexible is a subset of K'_flexible , which only contains the flexible subframes in the set K_flexible that are actually indicated as downlink subframes by the downlink configuration, and then only for the set of Subframes reserve the HARQ-ACK channel, is the total number of elements in the set, and its size depends on the actual number of downlink subframes in the binding window.

记根据SIB1上下行配置确定的对应同一个上行子帧的绑定窗口为K_SIB1。如果想保持除集合K_legacy以外其他子帧映射HARQ-ACK信道和对K_SIB1的子帧分配的HARQ-ACK信道占用连续的资源，则可以使从而不需要额外的信令配置这里，是现有系统对集合K_SIB1的下行子帧配置的HARQ-ACK信道起始偏移，N_SIB1是集合K_SIB1的CCE总数。Note that the binding window corresponding to the same uplink subframe determined according to the SIB1 uplink and downlink configuration is K_SIB1 . If you want to keep the HARQ-ACK channels mapped to subframes other than the set K_legacy and the HARQ-ACK channels allocated to the subframes of K_SIB1 occupying continuous resources, you can use Therefore, no additional signaling configuration is required here, is the HARQ-ACK channel start offset configured by the existing system for the downlink subframe of the set K_SIB1 , and N_SIB1 is the total number of CCEs of the set K_SIB1 .

如图10所示是处理EPDCCH的HARQ-ACK信道映射的示意图。以下行参考上下行配置5为例，并进一步假设SIB1上下行配置为上下行配置0。对第q个EPDCCH集，对需要反馈HARQ-ACK信息的上行子帧n，按照SIB1上下行配置0，为子帧n-6分配HARQ-ACK信道；然后再为对应k∈K＝{13,12,9,8,7,5,4,11}的子帧分配HARQ-ACK信道。其中，k∈K'_fixed＝{12,7,11}对应固定下行子帧集合，而k∈K'_flexible＝{13,9,8,5,4}对应灵活子帧集合。记第q个EPDCCH集配置专用的HARQ-ACK信道起始偏移为按照上述第二种方法，从起始偏移开始映射固定下行子帧集合K'_fixed的HARQ-ACK信道；记固定下行子帧集合K'_fixed的ECCE总数为N_q,fixed，则从偏移开始映射灵活子帧集合K'_flexible的HARQ-ACK信道。As shown in FIG. 10 , it is a schematic diagram of processing HARQ-ACK channel mapping of EPDCCH. For example, refer to the uplink and downlink configuration 5 for the downlink, and further assume that the uplink and downlink configuration of SIB1 is the uplink and downlink configuration 0. For the qth EPDCCH set, for the uplink subframe n that needs to feed back HARQ-ACK information, according to the SIB1 uplink and downlink configuration 0, allocate the HARQ-ACK channel for subframe n-6; then for the corresponding k∈K={13, 12, 9, 8, 7, 5, 4, 11} subframes are assigned HARQ-ACK channels. Wherein, k∈K'_fixed ={12,7,11} corresponds to the fixed downlink subframe set, and k∈K'_flexible ={13,9,8,5,4} corresponds to the flexible subframe set. Note that the dedicated HARQ-ACK channel start offset for the qth EPDCCH set configuration is According to the second method above, offset from the starting Start to map the HARQ-ACK channel of the fixed downlink subframe set K'_fixed; note that the total number of ECCEs of the fixed downlink subframe set K'_fixed is N_q,fixed , then from the offset Start mapping the HARQ-ACK channel of the flexible subframe set K'_flexible .

如果按照上述第二种处理灵活子帧的方法，即只对当前实际上下行配置指示为下行子帧的灵活子帧预留HARQ-ACK信道，可以根据重配置信令配置的实际上下行配置确定灵活子帧集合K'_flexible中当前实际下行子帧组成的集合为K'_flexible的子集，其中仅包含集合K_flexible中被实际上下行配置指示为下行子帧的灵活子帧，然后只为集合的个子帧预留HARQ-ACK信道，是集合内的元素总数，其大小取决于绑定窗内的实际下行子帧数。If the above-mentioned second method of processing flexible subframes is used, that is, only the HARQ-ACK channel is reserved for the flexible subframes indicated by the current actual downlink configuration as downlink subframes, it can be determined according to the actual downlink configuration configured in the reconfiguration signaling A set of current actual downlink subframes in the flexible subframe set K'_flexible is a subset of K'_flexible , which only contains the flexible subframes in the set K_flexible that are actually indicated as downlink subframes by the downlink configuration, and then only for the set of Subframes reserve the HARQ-ACK channel, is the total number of elements in the set, and its size depends on the actual number of downlink subframes in the binding window.

记根据SIB1上下行配置确定的对应同一个上行子帧的绑定窗口为K_SIB1。如果想保持除集合K_legacy以外其他子帧映射HARQ-ACK信道和对K_SIB1的子帧分配的HARQ-ACK信道占用连续的资源，则可以使从而不需要额外的信令配置这里，是现有系统对集合K_legacy的下行子帧配置的HARQ-ACK信道起始偏移，N_q,_SIB1是集合K_SIB1的ECCE总数。Note that the binding window corresponding to the same uplink subframe determined according to the SIB1 uplink and downlink configuration is K_SIB1 . If you want to keep the HARQ-ACK channels mapped to subframes other than the set K_legacy and the HARQ-ACK channels allocated to the subframes of K_SIB1 occupying continuous resources, you can use Therefore, no additional signaling configuration is required here, is the HARQ-ACK channel starting offset configured for the downlink subframe of the set K_legacy in the existing system, and N_q ,_SIB1 is the total number of ECCEs of the set K_SIB1 .

采用实施例一的上述方法，保证了参考绑定窗口内的固定下行子帧映射的HARQ-ACK信道不受灵活子帧影响，即使UE没有正确接收到重配置信令，根据下行参考上下行配置，UE仍然可以确切知道固定下行子帧映射的HARQ-ACK信道的位置，从而UE仍然有可能利用这些固定下行子帧映射的HARQ-ACK信道无混淆的反馈HARQ-ACK信息。实际上，对基于PUCCH格式3反馈HARQ-ACK的方法，UE只在只收到DAI等于1的DL Grant，或者同时收到SPS下行数据和DAI等于1的DL Grant时，才需要用到隐含分配的HARQ-ACK信道。采用实施例一的上述方法，当灵活子帧用于上行传输时，其映射的HARQ-ACK信道可以释放，从而用于PUSCH传输。Using the above method in Embodiment 1, it is ensured that the HARQ-ACK channel mapped to the fixed downlink subframe within the reference binding window is not affected by the flexible subframe, even if the UE does not receive the reconfiguration signaling correctly, according to the downlink reference uplink and downlink configuration , the UE can still know exactly the position of the HARQ-ACK channel mapped to the fixed downlink subframes, so that it is still possible for the UE to use the HARQ-ACK channels mapped to these fixed downlink subframes to feed back HARQ-ACK information without confusion. In fact, for the method of feeding back HARQ-ACK based on PUCCH format 3, the UE only needs to use the implicit when it only receives DL Grant with DAI equal to 1, or when it receives SPS downlink data and DL Grant with DAI equal to 1 at the same time. The allocated HARQ-ACK channel. Using the above method in Embodiment 1, when the flexible subframe is used for uplink transmission, the HARQ-ACK channel mapped thereto can be released, so as to be used for PUSCH transmission.

实施例二：Embodiment two:

现有LTE系统对EPDCCH映射的HARQ-ACK信道分配时，是预留M个子帧对应的HARQ-ACK信道。根据现有EPDCCH的设计，对第q个EPDCCH集，记起始HARQ信道偏移为则绑定窗口内第m子帧内ECCE映射HARQ-ACK信道的起始偏移为其中，是子帧n-k_i1内第q个EPDCCH集的ECCE总数，n为反馈HARQ-ACK的上行子帧序号，k_i1为一个子帧偏移值。When the existing LTE system allocates the HARQ-ACK channels mapped to the EPDCCH, the HARQ-ACK channels corresponding to M subframes are reserved. According to the existing EPDCCH design, for the qth EPDCCH set, record the initial HARQ channel offset as Then the starting offset of the ECCE mapping HARQ-ACK channel in the mth subframe in the binding window is in, is the total number of ECCEs of the qth EPDCCH set in the subframe nk_i1 , n is the sequence number of the uplink subframe that feeds back the HARQ-ACK, and k_i1 is a subframe offset value.

现有LTE系统对EPDCCH映射的HARQ-ACK信道分配时，可以通过在DLGrant中增加2比特HARQ-ACK资源偏移（ARO）来提高基站分配HARQ-ACK信道的灵活性和降低HARQ-ACK资源开销。对绑定窗口中的第0个子帧，ARO的定义与FDD系统一致，即ARO的四个可选取值为{0,-2,-1,2}。对绑定窗口的第m个子帧，m大于0时，ARO的四个码字指示的HARQ-ACK信道偏移分别为偏移0和2指示从起始偏移开始根据ECCE索引分配HARQ-ACK信道并分别采用偏移0和2，这可以看作是在对应第m个子帧的HARQ-ACK信道上分配HARQ-ACK信道；偏移指示从起始偏移开始根据ECCE索引分配HARQ-ACK信道并采用偏移也就是从偏移开始根据ECCE索引分配HARQ-ACK信道并采用偏移-2，这可以看作是在绑定窗口的第0个子帧对应的HARQ-ACK信道上分配HARQ-ACK信道并采用偏移值-2，从而最大化的实现HARQ-ACK资源压缩；偏移指示从起始偏移开始根据ECCE索引分配HARQ-ACK信道并采用偏移也就是从偏移开始根据ECCE索引分配HARQ-ACK信道并采用偏移-1，这可以看作是在绑定窗口第个子帧对应的HARQ-ACK信道上分配HARQ-ACK信道并采用偏移值-1，它同样可以压缩HARQ-ACK信道资源开销。When the existing LTE system allocates the HARQ-ACK channel mapped to the EPDCCH, it can increase the flexibility of the base station to allocate the HARQ-ACK channel and reduce the HARQ-ACK resource overhead by adding a 2-bit HARQ-ACK resource offset (ARO) in the DLGrant . For the 0th subframe in the binding window, the definition of ARO is consistent with that of the FDD system, that is, the four selectable values of ARO are {0,-2,-1,2}. For the mth subframe of the bonding window, when m is greater than 0, the HARQ-ACK channel offsets indicated by the four codewords of ARO are respectively Offsets 0 and 2 indicate offsets from the start Start to allocate HARQ-ACK channels according to the ECCE index and use offsets 0 and 2 respectively, which can be regarded as allocating HARQ-ACK channels on the HARQ-ACK channel corresponding to the mth subframe; offset Indicates the offset from the start Start allocating HARQ-ACK channel according to ECCE index and adopt offset that is offset from Start to allocate the HARQ-ACK channel according to the ECCE index and use the offset -2, which can be regarded as allocating the HARQ-ACK channel on the HARQ-ACK channel corresponding to the 0th subframe of the bonding window and using the offset value -2, In order to maximize the realization of HARQ-ACK resource compression; offset Indicates the offset from the start Start allocating HARQ-ACK channel according to ECCE index and adopt offset that is offset from Start to allocate HARQ-ACK channel according to ECCE index and adopt offset -1, which can be seen as The HARQ-ACK channel corresponding to subframes is allocated with an offset value of -1, which can also compress the HARQ-ACK channel resource overhead.

根据下行参考上下行配置可以确定对应一个上行子帧的参考绑定窗口。记根据SIB1上下行配置确定的对应同一个上行子帧的绑定窗口为K_SIB1。按照实施例一的第四种方法，在对EPDCCH的ECCE映射HARQ-ACK信道时，对参考绑定窗口中的一个可能的下行子帧，按照这个子帧是否也位于K_SIB1来分别进行处理。如果这个子帧也位于K_SIB1内，则这个下行子帧内的EPDCCH分配的HARQ-ACK信道与按照SIB1上下行配置分配HARQ-ACK信道一致，记参考绑定窗口内的这部分子帧集合为K_legacy。否则，对参考绑定窗口内除K_legacy以外的其他子帧，区分固定下行子帧集合K'_fixed和灵活子帧集合K'_flexible，可以是紧接着为K_SIB1的EPDCCH分配的HARQ-ACK信道连续分配，即其起始信道索引为并且是先连续分配K'_fixed的HARQ-ACK信道，然后连续K'_flexible的HARQ-ACK信道。这里，是集合K_SIB1的下行子帧配置的HARQ-ACK信道起始偏移，N_q,SIB1是K_SIB1中的ECCE总数。A reference binding window corresponding to one uplink subframe can be determined according to the downlink reference uplink and downlink configuration. Note that the binding window corresponding to the same uplink subframe determined according to the SIB1 uplink and downlink configuration is K_SIB1 . According to the fourth method of the first embodiment, when mapping the HARQ-ACK channel to the ECCE of the EPDCCH, a possible downlink subframe in the reference binding window is processed according to whether the subframe is also located in K_SIB1 . If this subframe is also located in K_SIB1 , the HARQ-ACK channel allocated by the EPDCCH in this downlink subframe is consistent with the HARQ-ACK channel allocated according to the SIB1 uplink and downlink configuration, and the subframe set in the reference binding window is recorded as K_legacy . Otherwise, for subframes other than K_legacy in the reference binding window, distinguish the fixed downlink subframe set K'_fixed and the flexible subframe set K'_flexible , which can be the HARQ-ACK channel allocated for the EPDCCH of K_SIB1 Continuous allocation, that is, its starting channel index is And the K'_fixed HARQ-ACK channel is continuously allocated first, and then the K'_flexible HARQ-ACK channel is continuously allocated. here, is the HARQ-ACK channel start offset of the downlink subframe configuration of the set K_SIB1 , and N_{q, SIB1} is the total number of ECCEs in K_SIB1 .

这里，对不同的下行参考上下行配置和SIB1上下行配置的组合，K_legacy可以等同于K_legacy，也可以只包含了K_SIB1的一部分元素。如图17所示，假设SIB1上下行配置为配置3，而下行参考上下行配置为配置4。对上行子帧2，K_SIB1包含的关联索引为“7,(6),11”，而K_legacy只包含关联索引7和11。本发明提出在分配参考绑定窗口内的EPDCCH的HARQ-ACK信道时，可以是按照由K_SIB1、K'_fixed和K'_flexible组成的子帧超集作为一个绑定窗口，即绑定窗口K_super＝{K_SIB1,K'_fixed,K'_flexible}，并按照K_super来分配HARQ-ACK信道。K_super内的子帧按照K_SIB1、K'_fixed和K'_flexible的顺序依次排列。K_super内的子帧个数可以大于等于参考绑定窗口中的子帧个数。以图17的情况为例，K_super中的元素数目大于参考绑定窗口的元素数目，参考绑定窗口中的元素7,11,12,8对应的在K_super内的索引依次为0,2,3,4。Here, for different combinations of downlink reference uplink and downlink configurations and SIB1 uplink and downlink configurations, K_legacy may be equal to K_legacy , or may only include a part of elements of K_SIB1 . As shown in FIG. 17 , it is assumed that the uplink and downlink configuration of SIB1 is configuration 3, and the downlink reference uplink and downlink configuration is configuration 4. For the uplink subframe 2, K_SIB1 includes association indexes "7, (6), 11", while K_legacy only includes association indexes 7 and 11. The present invention proposes that when allocating the HARQ-ACK channel of the EPDCCH within the reference binding window, the subframe superset composed of K_SIB1 , K'_fixed and K'_flexible can be used as a binding window, that is, the binding window K_super = {K_SIB1 , K'_fixed , K'_flexible }, and allocate the HARQ-ACK channel according to K_super . The subframes in K_super are arranged in the order of K_SIB1 , K'_fixed and K'_flexible . The number of subframes in K_super may be greater than or equal to the number of subframes in the reference binding window. Taking the situation in Figure 17 as an example, the number of elements in K_super is greater than the number of elements in the reference binding window, and the indexes in K_super corresponding to elements 7, 11, 12, and 8 in the reference binding window are 0 and 2 in sequence ,3,4.

在对EPDCCH映射的HARQ-ACK信道分配时，基于上面的子帧超集的绑定窗口K_super＝{K_SIB1,K'_fixed,K'_flexible}，其元素数目可以大于等于参考绑定窗口的元素数目，对参考绑定窗口中的一个子帧，可以是按照这个子帧在K_super中的次序来分配这个子帧的EPDCCH对应的HARQ-ACK信道。具体的说，对第q个EPDCCH集，对参考绑定窗口内的一个可能的下行子帧，记其在K_super中的次序为m，m＝0,1,...K_super-1，则按照次序m确定这个子帧的ECCE映射HARQ-ACK信道。假设套用现有EPDCCH映射HARQ-ACK的方法，则第q个EPDCCH集在第m个子帧的ECCE索引n_ECCE,q，则，对分布式EPDCCH，其映射的HARQ-ACK信道索引为对局部式EPDCCH，其映射的HARQ-ACK信道索引为其中，是高层配置的起始HARQ信道偏移，n'是根据EPDCCH占用的天线端口确定，是一个PRB对内的ECCE的个数，是子帧n-k_i1内第q个EPDCCH集的ECCE总数，n为反馈HARQ-ACK的上行子帧序号，k_i1为一个子帧偏移值。ARO的取值可以与现有EPDCCH映射HARQ-ACK的方法保持一致，即，表3。When allocating the HARQ-ACK channel mapped to EPDCCH, the binding window K_super = {K_SIB1 , K'_fixed , K'_flexible } based on the above subframe superset, the number of elements can be greater than or equal to the reference binding window The number of elements, for a subframe in the reference binding window, may be to allocate the HARQ-ACK channel corresponding to the EPDCCH of this subframe according to the order of this subframe in K_super . Specifically, for the qth EPDCCH set, for a possible downlink subframe in the reference binding window, record its order in K_super as m, m=0,1,...K_super -1, Then, the ECCE mapping HARQ-ACK channel of this subframe is determined according to the order m. Assuming that the existing EPDCCH mapping HARQ-ACK method is applied, the ECCE index n_ECCE,q of the qth EPDCCH set in the mth subframe, then, for the distributed EPDCCH, the mapped HARQ-ACK channel index is For localized EPDCCH, the mapped HARQ-ACK channel index is in, is the initial HARQ channel offset configured by the high layer, and n' is determined according to the antenna port occupied by the EPDCCH, is the number of ECCEs in a PRB pair, is the total number of ECCEs of the qth EPDCCH set in the subframe nk_i1 , n is the sequence number of the uplink subframe that feeds back the HARQ-ACK, and k_i1 is a subframe offset value. The value of ARO can be consistent with the existing method for mapping HARQ-ACK to EPDCCH, that is, Table 3.

表3table 3

对上下行配置快速变化的TDD系统，假设根据下行参考上下行配置来确定下行传输的HARQ定时，相应的绑定窗口称为参考绑定窗口。在预留HARQ-ACK信道时，可以是按照参考绑定窗口来预留；或者，也可以是按照实际绑定窗口来预留；或者也可以是按照上面描述的对应子帧超集K_super＝{K_SIB1,K'_fixed,K'_flexible}的绑定窗口，其元素数目可以大于等于参考绑定窗口的元素数目。这里，实际绑定窗口是指根据实际上下行配置得到的参考绑定窗口内的实际下行子帧的集合。根据本发明实施例一的方法，还可以是区分固定下行子帧集合或灵活子帧集合，并分别为固定下行子帧集合或灵活子帧集合预留HARQ-ACK信道。所以，本发明下面把上述参考绑定窗口、实际绑定窗口、固定下行子帧集合或者灵活子帧集合统称为绑定窗口，并描述在一个绑定窗口内的映射HARQ-ACK信道的方法。假设绑定窗口为K＝{k₀,k₁,...,k_M-1}，其大小为M。考虑到上述上下行配置快速变化的TDD系统一般是小小区，其服务的用户数目比较少，这导致现有EPDCCH的HARQ-ACK信道分配方法可能造成上行资源浪费。以下行参考上下行配置5为例，为了描述方便，把所有预留的HARQ-ACK信道分成9个块，并与绑定窗口的9个子帧一一对应。ARO取值的作用是允许所有9个子帧的EPDCCH都可以映射到m等于0的HARQ-ACK信道块。如图11所示是ARO取值对HARQ-ACK资源的压缩示意图。例如，在子帧m等于1内的EPDCCH是映射到m等于0的HARQ-ACK信道块，在子帧m等于8内的EPDCCH是映射到m等于5的HARQ-ACK信道块，等等。如图11所示，综合两个ARO取值和的效果，遍历所有m的可能取值，并统计每个HARQ-ACK信道块可能被使用的次数。m等于0的HARQ-ACK信道块可以被9个子帧映射；m等于1的HARQ-ACK信道块可以被2个子帧映射，即子帧m等于1和2；m等于2的HARQ-ACK信道块可以被3个子帧映射，即子帧m等于2、3和4；以此类推。这里，可以映射到m等于1的HARQ-ACK信道块的子帧数目反而少于可以映射m等于2的HARQ-ACK信道块的子帧数目，这不利于降低HARQ-ACK信道开销。For a TDD system in which uplink and downlink configurations change rapidly, it is assumed that the HARQ timing of downlink transmission is determined according to downlink reference uplink and downlink configurations, and the corresponding binding window is called a reference binding window. When reserving the HARQ-ACK channel, it may be reserved according to the reference binding window; or, it may be reserved according to the actual binding window; or it may be according to the corresponding subframe superset K_super = The number of elements of the binding window of {K_SIB1 , K'_fixed , K'_flexible } can be greater than or equal to the number of elements of the reference binding window. Here, the actual binding window refers to a set of actual downlink subframes within the reference binding window obtained according to the actual downlink configuration. According to the method in Embodiment 1 of the present invention, it is also possible to distinguish the fixed downlink subframe set or the flexible subframe set, and reserve the HARQ-ACK channel for the fixed downlink subframe set or the flexible subframe set respectively. Therefore, in the present invention, the above-mentioned reference binding window, actual binding window, fixed downlink subframe set or flexible subframe set are collectively referred to as a binding window, and a method for mapping HARQ-ACK channels within a binding window is described. Suppose the binding window is K={k₀ ,k₁ ,...,k_M-1 }, and its size is M. Considering that the above-mentioned TDD system whose uplink and downlink configurations change rapidly is generally a small cell, the number of users served by it is relatively small, which leads to the possible waste of uplink resources in the existing EPDCCH HARQ-ACK channel allocation method. For the convenience of description, all reserved HARQ-ACK channels are divided into 9 blocks, which correspond to the 9 subframes of the binding window one by one. ARO value The effect of is to allow the EPDCCHs of all 9 subframes to be mapped to the HARQ-ACK channel block with m equal to 0. As shown in Figure 11 is the value of ARO Schematic diagram of compressing HARQ-ACK resources. For example, the EPDCCH in the subframe m equal to 1 is mapped to the HARQ-ACK channel block with m equal to 0, the EPDCCH in the subframe m equal to 8 is mapped to the HARQ-ACK channel block with m equal to 5, and so on. As shown in Figure 11, combining two ARO values and The effect of traversing all possible values of m, and counting the number of times each HARQ-ACK channel block may be used. The HARQ-ACK channel block with m equal to 0 can be mapped by 9 subframes; the HARQ-ACK channel block with m equal to 1 can be mapped by 2 subframes, that is, the subframe m is equal to 1 and 2; the HARQ-ACK channel block with m equal to 2 It can be mapped by 3 subframes, that is, subframe m is equal to 2, 3 and 4; and so on. Here, the number of subframes that can be mapped to the HARQ-ACK channel block with m equal to 1 is less than the number of subframes that can be mapped to the HARQ-ACK channel block with m equal to 2, which is not conducive to reducing the HARQ-ACK channel overhead.

在基于ARO压缩HARQ-ACK信道开销时，本申请提出在进行ARO可选取值的设置时，ARO可选取值中用于压缩HARQ-ACK开销的ARO取值，保证允许映射索引靠前的HARQ-ACK信道的子帧数目不少于允许映射索引靠后的HARQ-ACK信道的子帧数目。按照图11的分块方法，这个方法也可以描述为通过设置ARO，可以映射到索引靠前的HARQ-ACK信道块的子帧数目不少于可以映射到索引靠后的HARQ-ACK信道块的子帧数目。下面描述几种确定ARO取值的优选例子，但是本发明不局限于这些特定的例子。When compressing the HARQ-ACK channel overhead based on ARO, this application proposes that when setting the ARO selectable value, the ARO value used to compress the HARQ-ACK overhead among the selectable ARO values is guaranteed to allow mapping index The number of subframes of the HARQ-ACK channel is not less than the number of subframes allowed to map the HARQ-ACK channel with a lower index. According to the block method in Figure 11, this method can also be described as by setting ARO, the number of subframes that can be mapped to the HARQ-ACK channel block with the upper index is not less than the number of subframes that can be mapped to the HARQ-ACK channel block with the lower index number of subframes. Several preferred examples of determining the value of ARO are described below, but the present invention is not limited to these specific examples.

在本实施例的方法中，m指相应子帧在绑定窗口中的子帧编号。可以保持子帧m等于0～3的ARO取值不变，但是调整m等于4～8的ARO取值。例如，对第m个子帧的EPDCCH，除映射到第m个HARQ-ACK信道块和第0个HARQ-ACK信道块以外的其他ARO取值的功能相对于现有ARO取值进一步往前移动一个HARQ-ACK信道块。即可以是把现有的ARO取值修改为如图12所示，以下行参考上下行配置5为例，采用这个方法，m等于0的HARQ-ACK信道块保持不变，仍然可以为9个子帧的EPDCCH所用；m等于1、2和3的HARQ-ACK信道块都是可以被3个子帧的EPDCCH所用；m等于4的HARQ-ACK信道块可以被2个子帧的EPDCCH所用；其他HARQ-ACK信道块只能被1个子帧的EPDCCH所用。这样，保证了前面的HARQ-ACK信道块可以更大的概率被使用，从而省出后面的HARQ-ACK块，并且基站可以将这些省出的资源作为PUSCH来分配。In the method of this embodiment, m refers to the subframe number of the corresponding subframe in the binding window. The ARO value of subframe m equal to 0-3 may be kept unchanged, but the ARO value of m equal to 4-8 may be adjusted. For example, for the EPDCCH of the mth subframe, the function of other ARO values except those mapped to the mth HARQ-ACK channel block and the 0th HARQ-ACK channel block is further moved forward by one compared to the existing ARO value HARQ-ACK channel block. That is, the existing ARO value can be change into As shown in Figure 12, the downlink refers to the uplink and downlink configuration 5 as an example. Using this method, the HARQ-ACK channel block with m equal to 0 remains unchanged and can still be used by EPDCCH of 9 subframes; m is equal to 1, 2 and 3 All HARQ-ACK channel blocks can be used by EPDCCH of 3 subframes; HARQ-ACK channel blocks with m equal to 4 can be used by EPDCCH of 2 subframes; other HARQ-ACK channel blocks can only be used by EPDCCH of 1 subframe . In this way, it is ensured that the previous HARQ-ACK channel blocks can be used with greater probability, thereby saving the latter HARQ-ACK blocks, and the base station can allocate these saved resources as PUSCH.

或者，可以保持子帧m等于0～2的ARO取值不变，但是调整m等于3～8的ARO取值，从而保证可以映射到索引靠前的HARQ-ACK信道块的子帧数目不少于可以映射到索引靠后的HARQ-ACK信道块的子帧数目。例如，可以是把现ARO取值修改为如图13所示，以下行参考上下行配置5为例，采用这个方法，m等于0的HARQ-ACK信道块保持不变，仍然可以为9个子帧的EPDCCH所用；m等于1、2和3的HARQ-ACK信道块都是可以被3个子帧的EPDCCH所用；m等于4的HARQ-ACK信道块都是可以被2个子帧的EPDCCH所用；其他HARQ-ACK信道块只能被1个子帧的EPDCCH所用。这样，保证了前面的HARQ-ACK信道块可以更大的概率被使用，从而可以省出后面的HARQ-ACK块，并且基站可以将这些省出的资源作为PUSCH来分配。Alternatively, the ARO value of subframe m equal to 0 to 2 can be kept unchanged, but the ARO value of m equal to 3 to 8 can be adjusted to ensure that the number of subframes that can be mapped to the HARQ-ACK channel block with a higher index is quite large is the number of subframes that can be mapped to the HARQ-ACK channel block with a lower index. For example, it can be to take the current ARO value change into As shown in Figure 13, the downlink refers to the uplink and downlink configuration 5 as an example. Using this method, the HARQ-ACK channel block with m equal to 0 remains unchanged and can still be used by EPDCCH of 9 subframes; m is equal to 1, 2 and 3 The HARQ-ACK channel blocks can be used by the EPDCCH of 3 subframes; the HARQ-ACK channel blocks with m equal to 4 can be used by the EPDCCH of 2 subframes; other HARQ-ACK channel blocks can only be used by the EPDCCH of 1 subframe Used by EPDCCH. In this way, it is ensured that the previous HARQ-ACK channel blocks can be used with greater probability, so that the latter HARQ-ACK blocks can be saved, and the base station can allocate these saved resources as PUSCH.

因为上述上下行配置快速变化的TDD系统一般是小小区，其服务的用户数目比较少，相应地实际需要占用的HARQ-ACK信道也少，可以把ARO的3个取值用于压缩HARQ-ACK信道资源开销。例如，对第m个子帧，可以保留ARO取值0用于在第m个HARQ-ACK信道块内分配HARQ-ACK信道；用两个ARO取值指示在第0个HARQ-ACK信道块内分配HARQ-ACK信道；另一个ARO取值指示在第x（0＜x＜m）个HARQ-ACK信道块内分配HARQ-ACK信道。基于现有LTE系统中的ARO定义，对第m（m大于0）个子帧，可以修改ARO取值为或者，对第m个子帧，可以保留ARO取值0用于在第m个HARQ-ACK信道块内分配HARQ-ACK信道；用一个ARO取值指示在第0个HARQ-ACK信道块内分配HARQ-ACK信道；另外两个ARO取值在第x（0＜x＜m）个HARQ-ACK信道块内分配HARQ-ACK信道。基于现有LTE系统中的ARO定义，对第m（m大于0）个子帧，可以修改ARO取值为Because the above-mentioned TDD systems with rapid changes in uplink and downlink configurations are generally small cells, the number of users served by them is relatively small, and accordingly the actual HARQ-ACK channels that need to be occupied are also small, so the three values of ARO can be used to compress HARQ-ACK Channel resource overhead. For example, for the mth subframe, the ARO value 0 can be reserved for allocating the HARQ-ACK channel in the mth HARQ-ACK channel block; two ARO values are used to indicate the allocation in the 0th HARQ-ACK channel block HARQ-ACK channel; another ARO value indicates that the HARQ-ACK channel is allocated in the x-th (0<x<m) HARQ-ACK channel block. Based on the ARO definition in the existing LTE system, for the mth (m greater than 0) subframe, the value of ARO can be modified Alternatively, for the mth subframe, the ARO value of 0 can be reserved for allocating the HARQ-ACK channel in the mth HARQ-ACK channel block; an ARO value can be used to indicate the allocation of HARQ in the 0th HARQ-ACK channel block - ACK channel; the other two ARO values allocate the HARQ-ACK channel in the x-th (0<x<m) HARQ-ACK channel block. Based on the ARO definition in the existing LTE system, for the mth (m greater than 0) subframe, the value of ARO can be modified

为了降低HARQ-ACK信道开销，可以对绑定窗口内的不同子帧配置不同数目的用于压缩开销的ARO取值。例如，对子帧m（0＜m＜M_ARO），用两个ARO取值支持压缩开销；而对子帧m（m≥M_ARO），用三个ARO取值支持压缩开销。这里，M_ARO是变化的门限值，M_ARO可以是高层配置的，或者预定义的，例如M_ARO等于4。例如，对子帧m（0＜m＜M_ARO），用两个ARO取值支持压缩开销；而对子帧m（m≥M_ARO），四个ARO取值都支持压缩开销。例如，基于现有LTE系统中的ARO定义，定义门限M_ARO等于6，对子帧m（0＜m＜M_ARO），定义ARO取值为即用两个ARO取值支持压缩开销；对子帧m（m≥6），定义ARO取值为即用四个ARO取值支持压缩开销。如图14所示这种方法的每个HARQ-ACK信道块可能被使用的次数。例如，基于图13的ARO定义，定义门限M_ARO等于5，对子帧m（0＜m＜M_ARO），定义ARO取值为即用两个ARO取值支持压缩开销；对子帧m（m≥5），定义ARO取值为即用四个ARO取值支持压缩开销。如图15所示这种方法的每个HARQ-ACK信道块可能被使用的次数。In order to reduce the HARQ-ACK channel overhead, different numbers of ARO values for overhead compression can be configured for different subframes within the bundling window. For example, for a subframe m (0<m<M_ARO ), two ARO values are used to support the compression overhead; and for a subframe m (m≥M_ARO ), three ARO values are used to support the compression overhead. Here, the_MARO is a variable threshold value, and the_MARO can be configured by a high layer or predefined, for example, the_MARO is equal to 4. For example, for a subframe m (0<m<M_ARO ), two ARO values support the compression overhead; and for a subframe m (m≥M_ARO ), all four ARO values support the compression overhead. For example, based on the ARO definition in the existing LTE system, the threshold M_ARO is defined to be equal to 6, and for subframe m (0<m<M_ARO ), the ARO value is defined as That is, use two ARO values to support compression overhead; for subframe m (m≥6), define the ARO value as That is, four ARO values are used to support compression overhead. The number of times each HARQ-ACK channel block may be used in this method is shown in FIG. 14 . For example, based on the ARO definition in Figure 13, define the threshold M_ARO equal to 5, and for subframe m (0<m<M_ARO ), define the value of ARO as That is, use two ARO values to support compression overhead; for subframe m (m≥5), define the ARO value as That is, four ARO values are used to support compression overhead. The number of times each HARQ-ACK channel block may be used in this method is shown in FIG. 15 .

根据现有的ARO定义，为了降低HARQ-ACK信道开销，当多个子帧的EPDCCH需要在其他子帧对应的HARQ-ACK信道块中映射HARQ-ACK信道时，实际上都是采用相同的偏移来映射信道。以ARO取值为例，它相当于是在第0个HARQ-ACK信道块内映射HARQ-ACK信道并且多个子帧固定采用偏移-2。According to the existing ARO definition, in order to reduce the HARQ-ACK channel overhead, when the EPDCCH of multiple subframes needs to map the HARQ-ACK channel in the HARQ-ACK channel block corresponding to other subframes, the same offset is actually used to map channels. Take the value of ARO For example, it is equivalent to mapping the HARQ-ACK channel in the 0th HARQ-ACK channel block and multiple subframes are fixed to use offset -2.

本申请提出当多个子帧的EPDCCH需要在其他子帧对应的HARQ-ACK信道块中映射HARQ-ACK信道时，通过对不同的子帧的EPDCCH采用不同的偏移值从而增加HARQ-ACK信道分配的灵活性，并提高资源利用率。例如，可以对用于降低HARQ-ACK信道开销的ARO可选取值增加与子帧索引m有关的项，例如m或者mod(m,2)。例如，基于现有LTE系统中的ARO定义，对第m（m大于0）个子帧，采用mod(m,2)引入与子帧索引m的关系，可以修改ARO取值为例如，基于图13的ARO定义，对第m（m大于0）个子帧，采用mod(m,2)引入与子帧索引m的关系，可以修改ARO取值为根据现有EPDCCH的方法，对一个子帧，HARQ-ACK信道是按照ECCE的总数映射的，但是，EPDCCH有可能用至少两个ECCE才聚合而成，即采用一般CP长度的小区并且每个PRB对内的可用于EPDCCH的RE数目小于104的情况，这导致实际上只使用偶数ECCE映射的HARQ-ACK信道。当多个子帧的EPDCCH需要在其他子帧对应的HARQ-ACK信道块中映射HARQ-ACK信道的情况时，通过增加子帧相关的偏移，例如mod(m,2)，实现了所有HARQ-ACK信道都可以被使用，从而提高上行资源利用率。This application proposes that when EPDCCHs of multiple subframes need to map HARQ-ACK channels in HARQ-ACK channel blocks corresponding to other subframes, HARQ-ACK channel allocation is increased by using different offset values for EPDCCHs of different subframes flexibility and improve resource utilization. For example, an item related to the subframe index m, such as m or mod(m, 2), may be added to the selectable ARO value for reducing the HARQ-ACK channel overhead. For example, based on the ARO definition in the existing LTE system, for the mth (m greater than 0) subframe, use mod(m,2) to introduce the relationship with the subframe index m, and the ARO value can be modified to For example, based on the ARO definition in Figure 13, for the mth (m greater than 0) subframe, use mod(m,2) to introduce the relationship with the subframe index m, and the ARO value can be modified to be According to the existing EPDCCH method, for a subframe, the HARQ-ACK channel is mapped according to the total number of ECCEs. However, the EPDCCH may be aggregated with at least two ECCEs, that is, a cell with a general CP length and each PRB In the case that the number of REs available for the EPDCCH within the pair is less than 104, this results in actually only using the HARQ-ACK channel mapped by the even number of ECCEs. When the EPDCCH of multiple subframes needs to map the HARQ-ACK channel in the HARQ-ACK channel block corresponding to other subframes, by adding the offset related to the subframe, such as mod(m,2), all HARQ-ACK channels are realized. All ACK channels can be used, thereby improving uplink resource utilization.

对应上述两个实施例，本申请还提供了用户设备，可以用于实施上述两个实施例。图16为本申请提供的用户设备结构图。如图16所示，该用户设备包括：信息接收单元、HARQ-ACK信道映射单元和HARQ-ACK信息传输单元。Corresponding to the above two embodiments, the present application further provides user equipment, which can be used to implement the above two embodiments. FIG. 16 is a structural diagram of a user equipment provided by this application. As shown in Fig. 16, the user equipment includes: an information receiving unit, a HARQ-ACK channel mapping unit, and a HARQ-ACK information transmitting unit.

其中，信息接收单元，用于检测基站发送的调度下行传输的PDCCH或者EPDCCH，并相应地接收调度的PDSCH；HARQ-ACK信道映射单元，用于根据所述PDCCH的CCE索引或者EPDCCH的ECCE索引，确定映射的HARQ-ACK信道；HARQ-ACK信息传输单元，用于在确定映射的HARQ-ACK信道上传输HARQ-ACK信息。Wherein, the information receiving unit is used to detect the PDCCH or EPDCCH scheduled for downlink transmission sent by the base station, and correspondingly receives the scheduled PDSCH; the HARQ-ACK channel mapping unit is used to according to the CCE index of the PDCCH or the ECCE index of the EPDCCH, Determine the mapped HARQ-ACK channel; the HARQ-ACK information transmission unit is used to transmit HARQ-ACK information on the determined mapped HARQ-ACK channel.

具体地，对应于实施例一中分配HARQ-ACK信道的方法，HARQ-ACK信道映射单元，用于将用户设备获取的下行参考上下行配置对应参考绑定窗口中的所有子帧或者所述参考绑定窗口中除按照SIB1上下行配置已经分配HARQ-ACK信道以外的其他子帧，区分为固定下行子帧和灵活子帧，在进行HARQ-ACK信道映射时，固定下行子帧的CCE或者ECCE映射的HARQ-ACK信道独立于灵活子帧。Specifically, corresponding to the method for allocating the HARQ-ACK channel in Embodiment 1, the HARQ-ACK channel mapping unit is used to map the downlink reference uplink and downlink configuration acquired by the user equipment to all subframes in the reference binding window or the reference In the binding window, subframes other than the HARQ-ACK channel allocated according to the SIB1 uplink and downlink configuration are divided into fixed downlink subframes and flexible subframes. When HARQ-ACK channel mapping is performed, the CCE or ECCE of the fixed downlink subframe The mapped HARQ-ACK channel is independent of flexible subframes.

对应于实施例二中分配HARQ-ACK信道的方法，HARQ-ACK信道映射单元，用于根据所述EPDCCH的ECCE索引和DL Grant中的HARQ-ACK资源偏移ARO，确定映射的HARQ-ACK信道；其中，预先设定的ARO可选取值中，用于压缩HARQ-ACK信道开销的至少一个ARO取值，保证允许映射到索引靠前的HARQ-ACK信道的子帧数目不少于允许映射到索引靠后的HARQ-ACK信道的子帧数目。Corresponding to the method for allocating the HARQ-ACK channel in Embodiment 2, the HARQ-ACK channel mapping unit is configured to determine the mapped HARQ-ACK channel according to the ECCE index of the EPDCCH and the HARQ-ACK resource offset ARO in the DL Grant ; Wherein, among the preset ARO selectable values, at least one ARO value used to compress the HARQ-ACK channel overhead ensures that the number of subframes allowed to be mapped to the HARQ-ACK channel with the front index is not less than the allowed mapping The number of subframes to the lower indexed HARQ-ACK channel.

由上述本申请给出的两个实施例可见，实施例一中引入固定下行子帧和灵活子帧，并使固定下行子帧的HARQ-ACK信道映射独立于灵活子帧，从而能够有效进行HARQ-ACK信息的传输；同时，当灵活子帧用于上行传输时，其映射的HARQ-ACK信道可以释放，从而用于PUSCH传输。实施例二中通过ARO可选取值的设置，能够提高HARQ-ACK信道分配的灵活性，更有效地压缩HARQ-ACK信道开销，提高上行资源利用率。It can be seen from the above two embodiments given in this application that in the first embodiment, the fixed downlink subframe and the flexible subframe are introduced, and the HARQ-ACK channel mapping of the fixed downlink subframe is independent of the flexible subframe, so that HARQ can be effectively performed. -Transmission of ACK information; at the same time, when the flexible subframe is used for uplink transmission, the HARQ-ACK channel mapped to it can be released, so as to be used for PUSCH transmission. In the second embodiment, the setting of selectable values of the ARO can improve the flexibility of HARQ-ACK channel allocation, compress the HARQ-ACK channel overhead more effectively, and improve the utilization rate of uplink resources.

以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本发明保护的范围之内。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the present invention. within the scope of protection.

Claims (17)

1. A method of transmitting HARQ-ACK information, comprising:

the UE detects a PDCCH or EPDCCH (physical downlink control channel) which is sent by a base station and used for scheduling downlink transmission, and correspondingly receives a scheduled PDSCH;

the UE determines a mapped HARQ-ACK channel according to the CCE index of the PDCCH or the ECCE index of the EPDCCH; the downlink reference uplink and downlink configuration acquired by the UE corresponds to all subframes in a reference binding window or other subframes except for the subframes which are allocated with the HARQ-ACK channel according to SIB1 uplink and downlink configuration in the reference binding window, and the subframes are divided into fixed downlink subframes and flexible subframes, and CCEs of the fixed downlink subframes or HARQ-ACK channels mapped by ECCEs are independent of the flexible subframes;

the UE transmits HARQ-ACK information.

2. The method of claim 1, wherein determining the mapped HARQ-ACK channel, wherein the CCE of the fixed downlink subframe or ECCE mapped HARQ-ACK channel independent of the flexible subframe comprises: and determining the HARQ-ACK channels allocated to the fixed downlink subframes and the flexible subframes according to the special HARQ-ACK channel initial offset respectively configured for the fixed downlink subframe set and the flexible subframe set.

3. The method of claim 1, wherein determining the mapped HARQ-ACK channel, wherein the CCE of the fixed downlink subframe or ECCE mapped HARQ-ACK channel independent of the flexible subframe comprises: starting from the set resources of the initial offset of the HARQ-ACK channels, firstly mapping the HARQ-ACK channels of all the fixed downlink subframes, and starting to map the HARQ-ACK channels of the flexible subframes next to the HARQ-ACK channel resources of the last fixed downlink subframe.

4. The method of claim 2 or 3, wherein when the UE distinguishes the subframes in the reference bundling window other than the subframes allocated with HARQ-ACK channels according to SIB1 uplink and downlink configuration as fixed downlink subframes and flexible subframes, the HARQ-ACK channels mapped by the fixed downlink subframes are in set K_SIB1Continuously allocating the resources behind the mapped HARQ-ACK channel; wherein the set K_SIB1The set is formed by subframes of a binding window which are configured in the same uplink subframe according to SIB1 uplink and downlink.

5. A method according to any of claims 1 to 3, characterized in that the HARQ-ACK channel is reserved for all flexible subframes; when determining the mapped HARQ-ACK channel, determining the HARQ-ACK channel mapped by any flexible subframe according to the index of any flexible subframe in all flexible subframe forming sets;

or, reserving HARQ-ACK channels for flexible subframes indicated as downlink subframes by current actual uplink and downlink configuration in all flexible subframes; when determining the mapped HARQ-ACK channel, determining the HARQ-ACK channel mapped by the m according to the index of any flexible subframe m indicated as a downlink subframe by the current actual uplink and downlink configuration in a flexible subframe forming set of all flexible subframes indicated as downlink subframes by the current actual uplink and downlink configuration.

6. The method according to any of claims 1 to 3, wherein block interleaving is used for mapping HARQ-ACK channels for the fixed downlink subframe configuration set and the flexible subframe configuration set respectively corresponding to the PDCCH.

7. The method of claim 4, wherein the HARQ-ACK channel mapping for EPDCCH is allocated according to K_SIB1、K'_fixedAnd K'_flexibleThe formed subframe superset is used as a binding window K_super＝{K_SIB1,K'_fixed,K'_flexible}，K_superIs greater than the number of elements in the reference bundling window, for a subframe in the reference bundling window, according to which the subframe is located at K_superThe HARQ-ACK channel corresponding to the EPDCCH of this subframe is allocated in the order of (1).

8. A method of transmitting HARQ-ACK information, comprising:

the UE detects DL Grant carried by EPDCCH and transmitted by a base station, and correspondingly receives a scheduled PDSCH;

the UE determines a mapped HARQ-ACK channel according to the ECCE index of the EPDCCH and the HARQ-ACK resource offset ARO in the DL Grant; the method comprises the following steps that at least one ARO value used for compressing the overhead of the HARQ-ACK channel is selected from preset ARO selectable values, and the number of subframes allowed to be mapped to the HARQ-ACK channel with the front index is not less than the number of subframes allowed to be mapped to the HARQ-ACK channel with the rear index;

the UE transmits HARQ-ACK information.

9. The method of claim 8, wherein the ARO is set to an optional value

10. The method of claim 8, wherein the ARO is set to an optional value

11. The method of claim 8, wherein for the mth subframe in the actual bundling window or the reference bundling window or the fixed downlink subframe set or the flexible subframe set, one selectable value of the ARO is used for allocating HARQ-ACK channel in the mth HARQ-ACK channel block; the other three selectable values of the ARQ are used for compressing the HARQ-ACK channel overhead;

wherein m is more than 0; the actual binding window corresponds to a current actual uplink and downlink configuration; the reference binding window corresponds to a downlink reference uplink and downlink configuration; and the UE distinguishes all subframes in the reference binding window or other subframes except the subframes which are allocated with HARQ-ACK channels according to SIB1 uplink and downlink configuration in the reference binding window into fixed downlink subframes and flexible subframes.

12. The method of claim 8, wherein for the mth subframe in the actual bundling window or the reference bundling window or the fixed downlink subframe set or the flexible subframe set, all four selectable values of the ARO are used for compressing the HARQ-ACK channel resource overhead;

wherein m is more than 0; the actual binding window corresponds to a current actual uplink and downlink configuration; the reference binding window corresponds to a downlink reference uplink and downlink configuration; and the UE distinguishes all subframes in the reference binding window or other subframes except the subframes which are allocated with HARQ-ACK channels according to SIB1 uplink and downlink configuration in the reference binding window into fixed downlink subframes and flexible subframes.

13. The method of claim 8, wherein different numbers of ARO selectable values for compressing HARQ-ACK channel resource overhead are configured for different subframes in an actual bundling window or a reference bundling window or a fixed downlink subframe set or a flexible subframe set;

wherein the actual binding window corresponds to a current actual uplink and downlink configuration; the reference binding window corresponds to a downlink reference uplink and downlink configuration; and the UE distinguishes all subframes in the reference binding window or other subframes except the subframes which are allocated with HARQ-ACK channels according to SIB1 uplink and downlink configuration in the reference binding window into fixed downlink subframes and flexible subframes.

14. The method of claim 13, wherein N is the m subframe in an actual bundling window or a reference bundling window or a fixed downlink subframe set or a flexible subframe set_ARO,1<N_ARO,2 ，N_ARO,1The number of the ARO selectable values for compressing the HARQ-ACK channel overhead when m is smaller than a preset threshold, N_ARO,2And the number of the ARO selectable values used for compressing the HARQ-ACK channel overhead when m is larger than the preset threshold.

15. The method of claim 8, wherein different HARQ-ACK channel offset values are used for EPDCCH for different subframes when multiple subframes map HARQ-ACK channels in the same HARQ-ACK channel block.

16. A user equipment for transmitting HARQ-ACK information, comprising: the device comprises an information receiving unit, an HARQ-ACK channel mapping unit and an HARQ-ACK information transmission unit; it is characterized in that the preparation method is characterized in that,

the information receiving unit is used for detecting the PDCCH or EPDCCH which is sent by the base station and used for scheduling downlink transmission and correspondingly receiving the scheduled PDSCH;

the HARQ-ACK channel mapping unit is used for determining a mapped HARQ-ACK channel according to a CCE index of the PDCCH or an ECCE index of the EPDCCH; the downlink reference uplink and downlink configuration acquired by the user equipment corresponds to all subframes in a reference binding window or other subframes in the reference binding window except for the subframes which are allocated with the HARQ-ACK channel according to SIB1 uplink and downlink configuration and is divided into a fixed downlink subframe and a flexible subframe, and the CCE of the fixed downlink subframe or the HARQ-ACK channel mapped by ECCE is independent of the flexible subframe;

and the HARQ-ACK information transmission unit is used for transmitting the HARQ-ACK information on the HARQ-ACK channel determined to be mapped.

17. A user equipment for transmitting HARQ-ACK information, comprising: the device comprises an information receiving unit, an HARQ-ACK channel mapping unit and an HARQ-ACK information transmission unit; it is characterized in that the preparation method is characterized in that,

the information receiving unit is used for detecting the DL Grant which is transmitted by the base station and is carried by the EPDCCH and used for scheduling downlink transmission, and correspondingly receiving the scheduled PDSCH;

the HARQ-ACK channel mapping unit is used for determining a mapped HARQ-ACK channel according to the ECCE index of the EPDCCH and the HARQ-ACK resource offset ARO in the DL Grant; the method comprises the following steps that the preset ARO selectable values are used for compressing the ARO values of the overhead of the HARQ-ACK channel, and the number of the subframes which are allowed to be mapped to the HARQ-ACK channel with the front index is not less than the number of the subframes which are allowed to be mapped to the HARQ-ACK channel with the back index;

and the HARQ-ACK information transmission unit is used for transmitting the HARQ-ACK information on the HARQ-ACK channel determined to be mapped.