CN101340227A - Method and device for sending downlink reference signal - Google Patents
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Abstract
Translated fromChinese
Description
Translated fromChinese技术领域technical field
本发明涉及通信领域，具体而言，涉及一种下行参考信号的发送方法和装置。The present invention relates to the communication field, in particular, to a method and device for sending a downlink reference signal.
背景技术Background technique
在目前的LTE(Long-Term Evolution，长期演进)系统中，LTE系统TDD(Time Division Duplex，时分双工)模式的帧结构又称为第二类帧结构(Frame Structure Type 2)，图1是根据相关技术的LTE系统TDD模式的帧结构的示意图，如图1所示，在这种帧结构中，一个10ms(即，307200Ts，1ms＝30720 Ts)的无线帧被分成两个半帧，每个半帧长5ms(即，153600Ts)。每个半帧包含5个长度为1ms的子帧。此外，一个上行或下行子帧又分成2个0.5ms的时隙。每个子帧可以起到不同的作用，例如，D代表用于传输下行信号的下行子帧，U代表用于传输上行信号的上行子帧，S代表特殊子帧，包含三个特殊时隙：即DwPTS(Downlink Pilot Time Slot，下行导频时隙)、GP(Guard Period，保护间隔)及UpPTS(Uplink Pilot TimeSlot，上行导频时隙)。在实际系统中，上/下行配制索引会通过广播消息通知给移动终端。In the current LTE (Long-Term Evolution, long-term evolution) system, the frame structure of the LTE system TDD (Time Division Duplex, Time Division Duplex) mode is also called the second type of frame structure (Frame Structure Type 2), Figure 1 is According to the schematic diagram of the frame structure of the LTE system TDD mode of the related art, as shown in Fig. A half-frame is 5ms long (ie, 153600Ts). Each half frame consists of 5 subframes with a length of 1 ms. In addition, one uplink or downlink subframe is further divided into two 0.5ms time slots. Each subframe can play a different role. For example, D represents a downlink subframe for transmitting downlink signals, U represents an uplink subframe for transmitting uplink signals, and S represents a special subframe, including three special time slots: DwPTS (Downlink Pilot Time Slot, downlink pilot time slot), GP (Guard Period, guard interval) and UpPTS (Uplink Pilot Time Slot, uplink pilot time slot). In an actual system, the uplink/downlink configuration index will be notified to the mobile terminal through a broadcast message.
LTE系统FDD(Frequency Division Duplex，频分双工)模式的帧结构又称为第一类帧结构(即，Frame Structure Type 1)，图2是根据相关技术的LTE系统FDD模式的帧结构的示意图，如图2所示，一个10ms的无线帧被分成20个0.5ms的时隙，相邻的2个时隙组成一个长度为1ms的子帧，即，子帧i由时隙2i和2i+1组成，其中，i＝0，1，...，9。在FDD模式下，10个子帧都用于上行信号或者下行信号的传输，上/下行之间通过不同的频带进行区分。The frame structure of the LTE system FDD (Frequency Division Duplex, Frequency Division Duplex) mode is also called the first type of frame structure (that is, Frame Structure Type 1), and Fig. 2 is a schematic diagram of the frame structure of the LTE system FDD mode according to the related art , as shown in Figure 2, a 10ms radio frame is divided into 20 time slots of 0.5ms, and two adjacent time slots form a subframe with a length of 1ms, that is, subframe i consists of time slots 2i and
LTE系统中的资源分配以RB(Resource Block，资源块)为单位，一个RB在频域上占用12个RE(Resource Element，资源元素，一个RE在时域上占用一个OFDM符号)，一个RB在时域上占用一个时隙，即，一个RB在时域上占用7个或者6个OFDM(OrthogonalFrequency Division Multiplexing，正交频分复用)符号，也就是说，一个RB在普通CP(Normal Cyclic Prefix，循环前缀)的条件下，占用7个OFDM符号，在扩展CP(Extended Cyclic Prefix，扩展循环前缀)的条件下，占用6个OFDM符号。图3是根据相关技术的资源块与资源单位关系的示意图，如图3所示，在普通CP的条件下，如果定义下行系统带宽对应的RB总数为NRBDL，则RB的索引为0，1，......，NRBDL-1。Resource allocation in the LTE system is based on RB (Resource Block, resource block). One RB occupies 12 REs (Resource Element, resource element, one RE occupies one OFDM symbol in the time domain) in the frequency domain, and one RB occupies one OFDM symbol in the time domain. One time slot is occupied in the time domain, that is, one
为了提高数据速率，LTE系统使用了多天线技术，基站侧最多支持4根发射天线。LTE系统的后续演进系统(LTE-Advance系统)需要支持更高的传输速率，基站侧需要支持的天线数达到8根，因此需要一种能够支持8天线场景的导频设计方案。In order to increase the data rate, the LTE system uses a multi-antenna technology, and the base station side supports up to 4 transmit antennas. The subsequent evolution system of the LTE system (LTE-Advance system) needs to support a higher transmission rate, and the base station side needs to support up to 8 antennas. Therefore, a pilot design scheme that can support the 8-antenna scenario is required.
发明内容Contents of the invention
针对相关技术中需要一种能够支持8天线场景的导频设计方案的问题而提出本发明，为此，本发明旨在提供一种下行导频信号的发送方法和装置，以解决上述问题。The present invention is proposed in view of the need for a pilot design scheme capable of supporting 8-antenna scenarios in the related art. Therefore, the present invention aims to provide a downlink pilot signal sending method and device to solve the above problems.
根据本发明的一个方面，提供了一种下行参考信号的发送方法。According to one aspect of the present invention, a method for sending a downlink reference signal is provided.
根据本发明的下行参考信号的发送方法，基于8天线发射方式，8天线分别用逻辑索引0-7表示，上述方法包括：设置天线的参考信号的频域发送位置和时域发送位置；其中，对于频域发送位置按照以下方式进行设置：根据小区标识确定每根天线的参考信号在频域的初始位置；在同一个正交频分复用符号上，将同一天线的参考信号间隔设置为12个资源元素，将相邻两根天线的参考信号间隔设置为3个资源元素；在发送相同的天线的参考信号的两个相邻的正交频分复用符号上，将同一天线在频域上相邻的两个参考信号间隔设置为6个资源元素，其中，参考信号间隔为n是指两个参考信号所占用的资源元素之间有n-1个资源元素，n的取值为以下之一：3、6、12；对于时域发送位置按照以下方式进行设置：将逻辑索引为0、1、2、3的天线的参考信号设置在同一个正交频分复用符号上；将逻辑索引为4、5、6、7的天线的参考信号设置在同一个正交频分复用符号上；将逻辑索引映射成天线端口，并在天线端口发送对应的天线参考信号。According to the transmission method of the downlink reference signal of the present invention, based on the 8-antenna transmission mode, the 8 antennas are respectively represented by logical indexes 0-7, and the method includes: setting the frequency-domain transmission position and the time-domain transmission position of the reference signal of the antenna; wherein, For the frequency domain transmission position, set it in the following way: determine the initial position of the reference signal of each antenna in the frequency domain according to the cell identity; on the same OFDM symbol, set the reference signal interval of the same antenna to 12 resource elements, the reference signal interval of two adjacent antennas is set to 3 resource elements; on two adjacent OFDM symbols that transmit the reference signals of the same antenna, the same antenna is used in the frequency domain The interval between two adjacent reference signals is set to 6 resource elements, wherein, the reference signal interval is n means that there are n-1 resource elements between the resource elements occupied by the two reference signals, and the value of n is as follows One of: 3, 6, 12; for the time-domain transmission position, set it in the following way: set the reference signal of the antenna whose logical index is 0, 1, 2, 3 on the same OFDM symbol; set The reference signals of the antennas with
根据本发明的另一个方面，提供了一种下行参考信号的发送装置。According to another aspect of the present invention, a device for sending a downlink reference signal is provided.
根据本发明的下行参考信号的发送装置，基于8天线发射方式，8天线分别用逻辑索引0-7表示，上述装置包括：频域设置模块，用于设置天线的参考信号的频域发送位置；其中，对于频域发送位置按照以下方式进行设置：根据小区标识确定每根天线的参考信号在频域的初始位置；在同一个正交频分复用符号上，将同一天线的参考信号间隔设置为12个资源元素，将相邻两根天线的参考信号间隔设置为3个资源元素；在发送相同的天线的参考信号的两个相邻的正交频分复用符号上，将同一天线在频域上相邻的两个参考信号间隔设置为6个资源元素，其中，参考信号间隔为n是指两个参考信号所占用的资源元素之间有n-1个资源元素，n的取值为以下之一：3、6、12；时域设置模块，用于设置天线的参考信号的时域发送位置；其中，对于时域发送位置按照以下方式进行设置：将逻辑索引为0、1、2、3的天线的参考信号设置在同一个正交频分复用符号上；将逻辑索引为4、5、6、7的天线的参考信号设置在同一个正交频分复用符号上；映射模块，用于将逻辑索引映射成天线端口；发送模块，用于在天线端口发送对应的天线参考信号。The device for transmitting a downlink reference signal according to the present invention is based on an 8-antenna transmission mode, and the 8 antennas are respectively represented by logical indexes 0-7. The above-mentioned device includes: a frequency domain setting module for setting the frequency domain transmission position of the reference signal of the antenna; Among them, the sending position in the frequency domain is set in the following manner: determine the initial position of the reference signal of each antenna in the frequency domain according to the cell identity; set the reference signal interval of the same antenna on the same OFDM symbol For 12 resource elements, set the reference signal interval of two adjacent antennas to 3 resource elements; on two adjacent OFDM symbols that transmit the reference signal of the same antenna, set the same antenna in The interval between two adjacent reference signals in the frequency domain is set to 6 resource elements, where the reference signal interval is n means that there are n-1 resource elements between the resource elements occupied by the two reference signals, and the value of n is It is one of the following: 3, 6, 12; the time domain setting module is used to set the time domain transmission position of the reference signal of the antenna; wherein, the time domain transmission position is set in the following manner: the logical index is 0, 1, The reference signals of the
通过本发明，采用通过设置天线参考信号的频域发送位置和时域发送位置，并将逻辑索引映射成天线端口的方法，解决了相关技术中需要一种能够支持8天线场景的导频设计方案的问题，进而在保证与4天线相同开销的前提下，能够支持8天线系统的信道估计。Through the present invention, the method of setting the frequency domain transmission position and time domain transmission position of the antenna reference signal and mapping the logical index to the antenna port solves the need for a pilot design scheme that can support the 8-antenna scenario in the related art , and then under the premise of ensuring the same overhead as that of 4 antennas, it can support channel estimation of 8-antenna system.
附图说明Description of drawings
此处所说明的附图用来提供对本发明的进一步理解，构成本申请的一部分，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：The accompanying drawings described here are used to provide a further understanding of the present invention and constitute a part of the application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations to the present invention. In the attached picture:
图1是根据相关技术的LTE系统TDD模式的帧结构的示意图；FIG. 1 is a schematic diagram of a frame structure of an LTE system TDD mode according to the related art;
图2是根据相关技术的LTE系统FDD模式的帧结构的示意图；FIG. 2 is a schematic diagram of a frame structure of an FDD mode of an LTE system according to the related art;
图3是根据相关技术的资源块与资源单位关系的示意图；FIG. 3 is a schematic diagram of the relationship between resource blocks and resource units according to related technologies;
图4是根据本发明实施例的下行参考信号的发送方法的流程图；FIG. 4 is a flowchart of a method for sending a downlink reference signal according to an embodiment of the present invention;
图5是根据本发明实施例一的下行参考信号的发送方法的示意图；FIG. 5 is a schematic diagram of a method for sending a downlink reference signal according to
图6是根据本发明实施例二的下行参考信号的发送方法的示意图；FIG. 6 is a schematic diagram of a method for sending a downlink reference signal according to
图7是根据本发明实施例三的下行参考信号的发送方法的示意图；FIG. 7 is a schematic diagram of a method for sending a downlink reference signal according to
图8是根据本发明实施例四的下行参考信号的发送方法的示意图；FIG. 8 is a schematic diagram of a method for sending a downlink reference signal according to Embodiment 4 of the present invention;
图9是根据本发明实施例五的下行参考信号的发送方法的示意图；FIG. 9 is a schematic diagram of a method for sending a downlink reference signal according to
图10是根据本发明实施例六的下行参考信号的发送方法的示意图；FIG. 10 is a schematic diagram of a method for sending a downlink reference signal according to
图11是根据本发明实施例七的下行参考信号的发送方法的示意图；FIG. 11 is a schematic diagram of a method for sending a downlink reference signal according to Embodiment 7 of the present invention;
图12是根据本发明实施例八的下行参考信号的发送方法的示意图；FIG. 12 is a schematic diagram of a method for sending a downlink reference signal according to Embodiment 8 of the present invention;
图13是根据本发明实施例九的下行参考信号的发送方法的示意图；FIG. 13 is a schematic diagram of a method for sending a downlink reference signal according to Embodiment 9 of the present invention;
图14是根据本发明实施例十的下行参考信号的发送方法的示意图；FIG. 14 is a schematic diagram of a method for sending a downlink reference signal according to Embodiment 10 of the present invention;
图15是根据本发明实施例十一的下行参考信号的发送方法的示意图；FIG. 15 is a schematic diagram of a method for sending a downlink reference signal according to Embodiment 11 of the present invention;
图16是根据本发明实施例十二的下行参考信号的发送方法的示意图；FIG. 16 is a schematic diagram of a method for sending a downlink reference signal according to Embodiment 12 of the present invention;
图17是根据本发明实施例十三的下行参考信号的发送方法的示意图；FIG. 17 is a schematic diagram of a method for sending a downlink reference signal according to Embodiment 13 of the present invention;
图18是根据本发明实施例十四的下行参考信号的发送方法的示意图；FIG. 18 is a schematic diagram of a method for sending a downlink reference signal according to Embodiment 14 of the present invention;
图19是根据本发明实施例十五的下行参考信号的发送方法的示意图；FIG. 19 is a schematic diagram of a method for sending a downlink reference signal according to Embodiment 15 of the present invention;
图20是根据本发明实施例十六的下行参考信号的发送方法的示意图；FIG. 20 is a schematic diagram of a method for sending a downlink reference signal according to Embodiment 16 of the present invention;
图21是根据本发明实施例的下行参考信号的发送装置的结构框图；FIG. 21 is a structural block diagram of a device for sending a downlink reference signal according to an embodiment of the present invention;
图22是根据本发明实施例一的下行参考信号的发送装置的优选结构框图；FIG. 22 is a preferred structural block diagram of a device for sending a downlink reference signal according to
图23是根据本发明实施例二的下行参考信号的发送装置的优选结构框图。Fig. 23 is a block diagram of a preferred structure of an apparatus for sending a downlink reference signal according to
具体实施方式Detailed ways
功能概述Functional Overview
本发明设计了新的8天线导频结构，即，提供了8天线时导频信号(又称为参考信号，Reference Signal，简称为RS)的发送方法，用于支持8天线的信道估计。通过本发明，可以在保证与4天线相同开销的前提下，支持8天线系统的信道估计。The present invention designs a new 8-antenna pilot structure, that is, provides a transmission method of a pilot signal (also called a reference signal, Reference Signal, referred to as RS) when 8 antennas are used to support channel estimation of 8 antennas. Through the present invention, the channel estimation of the 8-antenna system can be supported under the premise of ensuring the same overhead as that of the 4-antenna system.
下面将参考附图并结合实施例，来详细说明本发明。The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.
方法实施例method embodiment
根据本发明的实施例，提供了一种下行参考信号的发送方法，该方法基于8天线发射方式，8天线分别用逻辑索引0-7表示。图4是根据本发明实施例的下行参考信号的发送方法的流程图，如图4所示，该方法包括：According to an embodiment of the present invention, a method for sending a downlink reference signal is provided. The method is based on an 8-antenna transmission mode, and the 8 antennas are respectively represented by logical indices 0-7. FIG. 4 is a flowchart of a method for sending a downlink reference signal according to an embodiment of the present invention. As shown in FIG. 4, the method includes:
步骤S402，设置天线的参考信号的频域发送位置和时域发送位置；Step S402, setting the frequency domain transmission position and the time domain transmission position of the reference signal of the antenna;
步骤S404，将逻辑索引映射成天线端口(Antenna Port)，并在天线端口发送对应的天线参考信号。In step S404, the logical index is mapped to an antenna port (Antenna Port), and a corresponding antenna reference signal is sent on the antenna port.
下面将对该方法的具体实现过程进行详细描述。The specific implementation process of this method will be described in detail below.
在步骤S402中，对于频域发送位置按照以下方式进行设置：In step S402, the sending position in the frequency domain is set in the following manner:
(20)根据小区标识(ID)确定每根天线的参考信号在频域的初始位置。(20) Determine the initial position of the reference signal of each antenna in the frequency domain according to the cell identification (ID).
(22)在同一个OFDM符号上，将同一天线的参考信号间隔设置为12个RE，将相邻两根天线的参考信号间隔设置为3个RE。(22) On the same OFDM symbol, set the reference signal interval of the same antenna to 12 REs, and set the reference signal interval of two adjacent antennas to 3 REs.
(24)在发送相同的天线的参考信号的两个相邻的OFDM符号上，将同一天线在频域上相邻的两个参考信号间隔设置为6个RE。(24) On two adjacent OFDM symbols that transmit reference signals of the same antenna, the interval between two adjacent reference signals of the same antenna in the frequency domain is set to 6 REs.
具体地，在发送逻辑索引为0、1、2、3的天线的参考信号的两个相邻的OFDM符号上，将同一天线在频域上相邻的两个参考信号间隔设置为6个RE；在发送逻辑索引为4、5、6、7的天线的参考信号的两个相邻的OFDM符号上，将同一天线在频域上相邻的两个参考信号间隔设置为6个RE。Specifically, on two adjacent OFDM symbols that transmit reference signals of antennas with
在步骤S402中，对于时域发送位置按照以下方式进行设置：In step S402, the sending position in the time domain is set in the following manner:
(26)将逻辑索引为0、1、2、3的天线的参考信号设置在同一个OFDM符号上；并且，可以通过以下方式之一进行设置：(26) Set the reference signals of the antennas with
(1)将逻辑索引为0、1、2、3的天线的参考信号设置在每个时隙的第1个OFDM符号和倒数第3个OFDM符号上；(1) Set the reference signals of the antennas whose logical indexes are 0, 1, 2, and 3 on the first OFDM symbol and the penultimate OFDM symbol of each time slot;
(2)将逻辑索引为0、1、2、3的天线的参考信号设置在每个时隙的第1个OFDM符号上；(2) Set the reference signals of the antennas with
(28)将逻辑索引为4、5、6、7的天线的参考信号设置在同一个OFDM符号上；并且，将逻辑索引为4、5、6、7的天线的参考信号设置在每个时隙的第2个OFDM符号上。(28) Set the reference signals of the antennas whose logical indexes are 4, 5, 6, and 7 on the same OFDM symbol; and set the reference signals of the antennas whose logical indexes are 4, 5, 6, and 7 at each time on the second OFDM symbol of the slot.
在步骤S404中，将逻辑索引映射成天线端口的操作可以通过以下方式之一实现：In step S404, the operation of mapping the logical index to the antenna port can be implemented in one of the following ways:
(1)将逻辑索引0、1、2、3分别映射成天线端口a、a+1、b、b+1；将逻辑索引4、5、6、7分别映射成天线端口a+2、a+3、b+2、b+3，其中，a的取值可以为{0，6，7，8，9}中的一个，b的取值可以为{4，5，6，7，8，9，10，11，12，13}中的一个。(1) Map
(2)将逻辑索引0、1、2、3分别映射成天线端口a、a+1、a+2、a+3；将逻辑索引4、5、6、7分别映射成天线端口b、b+1、b+2、b+3，其中，a的取值可以为{0，6，7，8，9}中的一个，b的取值可以为{4，5，6，7，8，9，10，11，12，13}中的一个。(2) Map
通过该实施例，提供了8天线时参考信号的发送方法，采用通过设置天线参考信号的频域发送位置和时域发送位置，并将逻辑索引映射成天线端口的方法，在保证与4天线相同开销的前提下，能够支持8天线系统的信道估计。Through this embodiment, a method for transmitting a reference signal with 8 antennas is provided. By setting the frequency domain transmission position and time domain transmission position of the antenna reference signal, and mapping the logical index to the antenna port, it is guaranteed to be the same as the 4 antennas. Under the premise of overhead, it can support channel estimation of 8-antenna system.
下面结合实例对本发明的实现过程进行详细描述。在以下实施例的附图中，横轴方向为时域(t)，纵轴方向为频域(f)，一个子帧包括偶数时隙和奇数时隙，每个小方格代表一个资源元素(RE)，即，R0表示天线端口0的参考信号所占用的RE，R1表示天线端口1的参考信号所占用的RE，R2表示天线端口2的参考信号所占用的RE，R3表示天线端口3的参考信号所占用的RE，R4表示天线端口4的参考信号所占用的RE，R5表示天线端口5的参考信号所占用的RE，R6表示天线端口6的参考信号所占用的RE，R7表示天线端口7的参考信号所占用的RE，R8表示天线端口8的参考信号所占用的RE，R9表示天线端口9的参考信号所占用的RE，R10表示天线端口10的参考信号所占用的RE，R11表示天线端口11的参考信号所占用的RE，R12表示天线端口12的参考信号所占用的RE，R13表示天线端口13的参考信号所占用的RE。The implementation process of the present invention will be described in detail below in conjunction with examples. In the drawings of the following embodiments, the direction of the horizontal axis is the time domain (t), the direction of the vertical axis is the frequency domain (f), a subframe includes even-numbered time slots and odd-numbered time slots, and each small square represents a resource element (RE), that is, R0 represents the RE occupied by the reference signal of antenna port 0, R1 represents the RE occupied by the reference signal of antenna port 1, R2 represents the RE occupied by the reference signal of antenna port 2, and R3 Represents the RE occupied by the reference signal of antenna port 3, R4 represents the RE occupied by the reference signal of antenna port 4, R5 represents the RE occupied by the reference signal of antenna port 5, R6 represents the RE occupied by the reference signal of antenna port 6 Occupied RE, R7 indicates the RE occupied by the reference signal of antenna port 7, R8 indicates the RE occupied by the reference signal of antenna port 8, R9 indicates the RE occupied by the reference signal of antenna port 9, R10 indicates the antenna The RE occupied by the reference signal of port 10, R11 indicates the RE occupied by the reference signal of antenna port 11, R12 indicates the RE occupied by the reference signal of antenna port 12, and R13 indicates the RE occupied by the reference signal of antenna port 13 RE.
实施例一Embodiment one
图5是根据本发明实施例一的下行参考信号的发送方法的示意图，如图5所示，在普通CP的条件下，小区ID为0，偶数时隙包括OFDM符号l＝0至l＝6，奇数时隙包括OFDM符号l＝0至l＝6，该方法包括以下步骤：FIG. 5 is a schematic diagram of a downlink reference signal transmission method according to
步骤一，设置天线的参考信号的频域发送位置和时域发送位置；
其中，对于频域发送位置按照以下方式进行设置：Among them, the sending position in the frequency domain is set in the following manner:
(1)逻辑索引为0的天线的参考信号在频域的初始位置为第0个RE；(1) The initial position of the reference signal of the antenna whose logical index is 0 in the frequency domain is the 0th RE;
(2)在同一个OFDM符号上，同一根天线的参考信号间隔为12个RE，相邻两根天线的参考信号间隔为3个RE；(2) On the same OFDM symbol, the reference signal interval of the same antenna is 12 REs, and the reference signal interval of two adjacent antennas is 3 REs;
(3)在发送逻辑索引为0、1、2、3的天线的参考信号的两个相邻的OFDM符号上，设置同一个天线的频域上相邻的两个参考信号间隔6个RE；在发送逻辑索引为4、5、6、7的天线的参考信号的两个相邻的OFDM符号上，设置同一个天线的频域上相邻的两个参考信号间隔6个RE。(3) On the two adjacent OFDM symbols that transmit the reference signals of the antennas whose logical indexes are 0, 1, 2, and 3, set an interval of 6 REs between two adjacent reference signals in the frequency domain of the same antenna; On two adjacent OFDM symbols that transmit reference signals of antennas with
其中，对于时域发送位置按照以下方式进行设置：Among them, the sending position in the time domain is set in the following manner:
(1)将逻辑索引为0、1、2、3的天线的参考信号设置在同一个OFDM符号上；并且，将逻辑索引为0、1、2、3的天线的参考信号设置在每个时隙的第1个OFDM符号和倒数第3个OFDM符号上；(1) Set the reference signals of the antennas with
(2)将逻辑索引为4、5、6、7的天线的参考信号设置在同一个OFDM符号上；并且，将逻辑索引为4、5、6、7的天线的参考信号设置在每个时隙的第2个OFDM符号上。(2) set the reference signals of the antennas whose logical indexes are 4, 5, 6, and 7 on the same OFDM symbol; and set the reference signals of the antennas whose logical indexes are 4, 5, 6, and 7 at each time on the second OFDM symbol of the slot.
步骤二，将逻辑索引映射成天线端口，即，将逻辑索引0、1、2、3分别映射成天线端口a、a+1、b、b+1；将逻辑索引4、5、6、7分别映射成天线端口a+2、a+3、b+2、b+3；并在天线端口发送对应的天线参考信号，其中，a＝0，b＝4。Step 2: Map the logical indices to antenna ports, that is, map
通过以上实施步骤，形成如图5所示的天线参考信号的发送位置，此外，a的取值还可以为{6，7，8，9}中的一个，b的取值还可以为{5，6，7，8，9，10，11，12，13}中的一个。Through the above implementation steps, the sending position of the antenna reference signal as shown in Figure 5 is formed. In addition, the value of a can also be one of {6, 7, 8, 9}, and the value of b can also be {5 , 6, 7, 8, 9, 10, 11, 12, 13} in one.
实施例二Embodiment two
图6是根据本发明实施例二的下行参考信号的发送方法的示意图，如图6所示，在扩展CP的条件下，小区ID为0，偶数时隙包括OFDM符号l＝0至l＝5，奇数时隙包括OFDM符号l＝0至l＝5，该方法包括以下步骤：Fig. 6 is a schematic diagram of a downlink reference signal transmission method according to
步骤一，设置天线的参考信号的频域发送位置和时域发送位置；
其中，对于频域发送位置按照以下方式进行设置：Among them, the sending position in the frequency domain is set in the following manner:
(1)逻辑索引为0的天线的参考信号在频域的初始位置为第0个RE；(1) The initial position of the reference signal of the antenna whose logical index is 0 in the frequency domain is the 0th RE;
(2)在同一个OFDM符号上，同一根天线的参考信号间隔为12个RE，相邻两根天线的参考信号间隔为3个RE；(2) On the same OFDM symbol, the reference signal interval of the same antenna is 12 REs, and the reference signal interval of two adjacent antennas is 3 REs;
(3)在发送逻辑索引为0、1、2、3的天线的参考信号的两个相邻的OFDM符号上，设置同一个天线的频域上相邻的两个参考信号间隔6个RE；在发送逻辑索引为4、5、6、7的天线的参考信号的两个相邻的OFDM符号上，设置同一个天线的频域上相邻的两个参考信号间隔6个RE。(3) On the two adjacent OFDM symbols that transmit the reference signals of the antennas whose logical indexes are 0, 1, 2, and 3, set an interval of 6 REs between two adjacent reference signals in the frequency domain of the same antenna; On two adjacent OFDM symbols that transmit reference signals of antennas with
其中，对于时域发送位置按照以下方式进行设置：Among them, the sending position in the time domain is set in the following manner:
(1)将逻辑索引为0、1、2、3的天线的参考信号设置在同一个OFDM符号上；并且，将逻辑索引为0、1、2、3的天线的参考信号设置在每个时隙的第1个OFDM符号和倒数第3个OFDM符号上；(1) Set the reference signals of the antennas with
(2)将逻辑索引为4、5、6、7的天线的参考信号设置在同一个OFDM符号上；并且，将逻辑索引为4、5、6、7的天线的参考信号设置在每个时隙的第2个OFDM符号上。(2) set the reference signals of the antennas whose logical indexes are 4, 5, 6, and 7 on the same OFDM symbol; and set the reference signals of the antennas whose logical indexes are 4, 5, 6, and 7 at each time on the second OFDM symbol of the slot.
步骤二，将逻辑索引映射成天线端口，即，将逻辑索引0、1、2、3分别映射成天线端口a、a+1、b、b+1；将逻辑索引4、5、6、7分别映射成天线端口a+2、a+3、b+2、b+3；并在天线端口发送对应的天线参考信号，其中，a＝0，b＝4。Step 2: Map the logical indices to antenna ports, that is, map
通过以上实施步骤，形成如图6所示的天线参考信号的发送位置，此外，a的取值还可以为{6，7，8，9}中的一个，b的取值还可以为{5，6，7，8，9，10，11，12，13}中的一个。Through the above implementation steps, the sending position of the antenna reference signal as shown in Figure 6 is formed. In addition, the value of a can also be one of {6, 7, 8, 9}, and the value of b can also be {5 , 6, 7, 8, 9, 10, 11, 12, 13} in one.
实施例三Embodiment three
图7是根据本发明实施例三的下行参考信号的发送方法的示意图，如图7所示，在普通CP的条件下，小区ID为0，偶数时隙包括OFDM符号l＝0至l＝6，奇数时隙包括OFDM符号l＝0至l＝6，该方法包括以下步骤：7 is a schematic diagram of a method for sending a downlink reference signal according to
步骤一，设置天线的参考信号的频域发送位置和时域发送位置；
其中，对于频域发送位置按照以下方式进行设置：Among them, the sending position in the frequency domain is set in the following manner:
(1)逻辑索引为0的天线的参考信号在频域的初始位置为第0个RE；(1) The initial position of the reference signal of the antenna whose logical index is 0 in the frequency domain is the 0th RE;
(2)在同一个OFDM符号上，同一根天线的参考信号间隔为12个RE，相邻两根天线的参考信号间隔为3个RE；(2) On the same OFDM symbol, the reference signal interval of the same antenna is 12 REs, and the reference signal interval of two adjacent antennas is 3 REs;
(3)在发送逻辑索引为0、1、2、3的天线的参考信号的两个相邻的OFDM符号上，设置同一个天线的频域上相邻的两个参考信号间隔6个RE；在发送逻辑索引为4、5、6、7的天线的参考信号的两个相邻的OFDM符号上，设置同一个天线的频域上相邻的两个参考信号间隔6个RE。(3) On the two adjacent OFDM symbols that transmit the reference signals of the antennas whose logical indexes are 0, 1, 2, and 3, set an interval of 6 REs between two adjacent reference signals in the frequency domain of the same antenna; On two adjacent OFDM symbols that transmit reference signals of antennas with
其中，对于时域发送位置按照以下方式进行设置：Among them, the sending position in the time domain is set in the following manner:
(1)将逻辑索引为0、1、2、3的天线的参考信号设置在同一个OFDM符号上；并且，将逻辑索引为0、1、2、3的天线的参考信号设置在每个时隙的第1个OFDM符号和倒数第3个OFDM符号上；(1) Set the reference signals of the antennas with
(2)将逻辑索引为4、5、6、7的天线的参考信号设置在同一个OFDM符号上；并且，将逻辑索引为4、5、6、7的天线的参考信号设置在每个时隙的第2个OFDM符号上。(2) set the reference signals of the antennas whose logical indexes are 4, 5, 6, and 7 on the same OFDM symbol; and set the reference signals of the antennas whose logical indexes are 4, 5, 6, and 7 at each time on the second OFDM symbol of the slot.
步骤二，将逻辑索引映射成天线端口，即，将逻辑索引0、1、2、3分别映射成天线端口a、a+1、a+2、a+3；将逻辑索引4、5、6、7分别映射成天线端口b、b+1、b+2、b+3；并在天线端口发送对应的天线参考信号，其中，a＝0，b＝4。Step 2: Map the logical indices to antenna ports, that is, map
通过以上实施步骤，形成如图7所示的天线参考信号的发送位置，此外，a的取值还可以为{6，7，8，9}中的一个，b的取值还可以为{5，6，7，8，9，10，11，12，13}中的一个。Through the above implementation steps, the sending position of the antenna reference signal as shown in Figure 7 is formed. In addition, the value of a can also be one of {6, 7, 8, 9}, and the value of b can also be {5 , 6, 7, 8, 9, 10, 11, 12, 13} in one.
实施例四Embodiment four
图8是根据本发明实施例四的下行参考信号的发送方法的示意图，如图8所示，在扩展CP的条件下，小区ID为0，偶数时隙包括OFDM符号l＝0至l＝5，奇数时隙包括OFDM符号l＝0至l＝5，该方法包括以下步骤：FIG. 8 is a schematic diagram of a downlink reference signal transmission method according to Embodiment 4 of the present invention. As shown in FIG. 8 , under the condition of extended CP, the cell ID is 0, and even time slots include OFDM symbols l=0 to l=5 , odd time slots include OFDM symbols l=0 to l=5, the method includes the following steps:
步骤一，设置天线的参考信号的频域发送位置和时域发送位置；
其中，对于频域发送位置按照以下方式进行设置：Among them, the sending position in the frequency domain is set in the following manner:
(1)逻辑索引为0的天线的参考信号在频域的初始位置为第0个RE；(1) The initial position of the reference signal of the antenna whose logical index is 0 in the frequency domain is the 0th RE;
(2)在同一个OFDM符号上，同一根天线的参考信号间隔为12个RE，相邻两根天线的参考信号间隔为3个RE；(2) On the same OFDM symbol, the reference signal interval of the same antenna is 12 REs, and the reference signal interval of two adjacent antennas is 3 REs;
(3)在发送逻辑索引为0、1、2、3的天线的参考信号的两个相邻的OFDM符号上，设置同一个天线的频域上相邻的两个参考信号间隔6个RE；在发送逻辑索引为4、5、6、7的天线的参考信号的两个相邻的OFDM符号上，设置同一个天线的频域上相邻的两个参考信号间隔6个RE。(3) On the two adjacent OFDM symbols that transmit the reference signals of the antennas whose logical indexes are 0, 1, 2, and 3, set an interval of 6 REs between two adjacent reference signals in the frequency domain of the same antenna; On two adjacent OFDM symbols that transmit reference signals of antennas with
其中，对于时域发送位置按照以下方式进行设置：Among them, the sending position in the time domain is set in the following manner:
(1)将逻辑索引为0、1、2、3的天线的参考信号设置在同一个OFDM符号上；并且，将逻辑索引为0、1、2、3的天线的参考信号设置在每个时隙的第1个OFDM符号和倒数第3个OFDM符号上；(1) Set the reference signals of the antennas with
(2)将逻辑索引为4、5、6、7的天线的参考信号设置在同一个OFDM符号上；并且，将逻辑索引为4、5、6、7的天线的参考信号设置在每个时隙的第2个OFDM符号上。(2) set the reference signals of the antennas whose logical indexes are 4, 5, 6, and 7 on the same OFDM symbol; and set the reference signals of the antennas whose logical indexes are 4, 5, 6, and 7 at each time on the second OFDM symbol of the slot.
步骤二，将逻辑索引映射成天线端口，即，将逻辑索引0、1、2、3分别映射成天线端口a、a+1、a+2、a+3；将逻辑索引4、5、6、7分别映射成天线端口b、b+1、b+2、b+3；并在天线端口发送对应的天线参考信号，其中，a＝0，b＝4。Step 2: Map the logical indices to antenna ports, that is, map
通过以上实施步骤，形成如图8所示的天线参考信号的发送位置，此外，a的取值还可以为{6，7，8，9}中的一个，b的取值还可以为{5，6，7，8，9，10，11，12，13}中的一个。Through the above implementation steps, the sending position of the antenna reference signal as shown in Figure 8 is formed. In addition, the value of a can also be one of {6, 7, 8, 9}, and the value of b can also be {5 , 6, 7, 8, 9, 10, 11, 12, 13} in one.
实施例五Embodiment five
图9是根据本发明实施例五的下行参考信号的发送方法的示意图，如图9所示，在普通CP的条件下，小区ID为0，偶数时隙包括OFDM符号l＝0至l＝6，奇数时隙包括OFDM符号l＝0至l＝6，该方法包括以下步骤：Fig. 9 is a schematic diagram of a method for sending a downlink reference signal according to
步骤一，设置天线的参考信号的频域发送位置和时域发送位置；
其中，对于频域发送位置按照以下方式进行设置：Among them, the sending position in the frequency domain is set in the following manner:
(1)逻辑索引为0的天线的参考信号在频域的初始位置为第0个RE；(1) The initial position of the reference signal of the antenna whose logical index is 0 in the frequency domain is the 0th RE;
(2)在同一个OFDM符号上，同一根天线的参考信号间隔为12个RE，相邻两根天线的参考信号间隔为3个RE；(2) On the same OFDM symbol, the reference signal interval of the same antenna is 12 REs, and the reference signal interval of two adjacent antennas is 3 REs;
(3)在发送逻辑索引为0、1、2、3的天线的参考信号的两个相邻的OFDM符号上，设置同一个天线的频域上相邻的两个参考信号间隔6个RE；在发送逻辑索引为4、5、6、7的天线的参考信号的两个相邻的OFDM符号上，设置同一个天线的频域上相邻的两个参考信号间隔6个RE。(3) On the two adjacent OFDM symbols that transmit the reference signals of the antennas whose logical indexes are 0, 1, 2, and 3, set an interval of 6 REs between two adjacent reference signals in the frequency domain of the same antenna; On two adjacent OFDM symbols that transmit reference signals of antennas with
其中，对于时域发送位置按照以下方式进行设置：Among them, the sending position in the time domain is set in the following manner:
(1)将逻辑索引为0、1、2、3的天线的参考信号设置在同一个OFDM符号上；并且，将逻辑索引为0、1、2、3的天线的参考信号设置在每个时隙的第1个OFDM符号上；(1) Set the reference signals of the antennas with
(2)将逻辑索引为4、5、6、7的天线的参考信号设置在同一个OFDM符号上；并且，将逻辑索引为4、5、6、7的天线的参考信号设置在每个时隙的第2个OFDM符号上。(2) set the reference signals of the antennas whose logical indexes are 4, 5, 6, and 7 on the same OFDM symbol; and set the reference signals of the antennas whose logical indexes are 4, 5, 6, and 7 at each time on the second OFDM symbol of the slot.
步骤二，将逻辑索引映射成天线端口，即，将逻辑索引0、1、2、3分别映射成天线端口a、a+1、b、b+1；将逻辑索引4、5、6、7分别映射成天线端口a+2、a+3、b+2、b+3；并在天线端口发送对应的天线参考信号，其中，a＝0，b＝4。Step 2: Map the logical indices to antenna ports, that is, map
通过以上实施步骤，形成如图9所示的天线参考信号的发送位置，此外，a的取值还可以为{6，7，8，9}中的一个，b的取值还可以为{5，6，7，8，9，10，11，12，13}中的一个。Through the above implementation steps, the sending position of the antenna reference signal as shown in Figure 9 is formed. In addition, the value of a can also be one of {6, 7, 8, 9}, and the value of b can also be {5 , 6, 7, 8, 9, 10, 11, 12, 13} in one.
实施例六Embodiment six
图10是根据本发明实施例六的下行参考信号的发送方法的示意图，如图10所示，在扩展CP的条件下，小区ID为0，偶数时隙包括OFDM符号l＝0至l＝5，奇数时隙包括OFDM符号l＝0至l＝5，该方法包括以下步骤：FIG. 10 is a schematic diagram of a method for sending a downlink reference signal according to
步骤一，设置天线的参考信号的频域发送位置和时域发送位置；
其中，对于频域发送位置按照以下方式进行设置：Among them, the sending position in the frequency domain is set in the following manner:
(1)逻辑索引为0的天线的参考信号在频域的初始位置为第0个RE；(1) The initial position of the reference signal of the antenna whose logical index is 0 in the frequency domain is the 0th RE;
(2)在同一个OFDM符号上，同一根天线的参考信号间隔为12个RE，相邻两根天线的参考信号间隔为3个RE；(2) On the same OFDM symbol, the reference signal interval of the same antenna is 12 REs, and the reference signal interval of two adjacent antennas is 3 REs;
(3)在发送逻辑索引为0、1、2、3的天线的参考信号的两个相邻的OFDM符号上，设置同一个天线的频域上相邻的两个参考信号间隔6个RE；在发送逻辑索引为4、5、6、7的天线的参考信号的两个相邻的OFDM符号上，设置同一个天线的频域上相邻的两个参考信号间隔6个RE。(3) On the two adjacent OFDM symbols that transmit the reference signals of the antennas whose logical indexes are 0, 1, 2, and 3, set an interval of 6 REs between two adjacent reference signals in the frequency domain of the same antenna; On two adjacent OFDM symbols that transmit reference signals of antennas with
其中，对于时域发送位置按照以下方式进行设置：Among them, the sending position in the time domain is set in the following manner:
(1)将逻辑索引为0、1、2、3的天线的参考信号设置在同一个OFDM符号上；并且，将逻辑索引为0、1、2、3的天线的参考信号设置在每个时隙的第1个OFDM符号上；(1) Set the reference signals of the antennas with
(2)将逻辑索引为4、5、6、7的天线的参考信号设置在同一个OFDM符号上；并且，将逻辑索引为4、5、6、7的天线的参考信号设置在每个时隙的第2个OFDM符号上。(2) set the reference signals of the antennas whose logical indexes are 4, 5, 6, and 7 on the same OFDM symbol; and set the reference signals of the antennas whose logical indexes are 4, 5, 6, and 7 at each time on the second OFDM symbol of the slot.
步骤二，将逻辑索引映射成天线端口，即，将逻辑索引0、1、2、3分别映射成天线端口a、a+1、b、b+1；将逻辑索引4、5、6、7分别映射成天线端口a+2、a+3、b+2、b+3；并在天线端口发送对应的天线参考信号，其中，a＝0，b＝4。Step 2: Map the logical indices to antenna ports, that is, map
通过以上实施步骤，形成如图10所示的天线参考信号的发送位置，此外，a的取值还可以为{6，7，8，9}中的一个，b的取值还可以为{5，6，7，8，9，10，11，12，13}中的一个。Through the above implementation steps, the sending position of the antenna reference signal as shown in Figure 10 is formed. In addition, the value of a can also be one of {6, 7, 8, 9}, and the value of b can also be {5 , 6, 7, 8, 9, 10, 11, 12, 13} in one.
实施例七Embodiment seven
图11是根据本发明实施例七的下行参考信号的发送方法的示意图，如图11所示，在普通CP的条件下，小区ID为0，偶数时隙包括OFDM符号l＝0至l＝6，奇数时隙包括OFDM符号l＝0至l＝6，该方法包括以下步骤：FIG. 11 is a schematic diagram of a downlink reference signal sending method according to Embodiment 7 of the present invention. As shown in FIG. 11 , under the condition of a common CP, the cell ID is 0, and even time slots include OFDM symbols l=0 to l=6 , the odd time slot includes OFDM symbols l=0 to l=6, the method includes the following steps:
步骤一，设置天线的参考信号的频域发送位置和时域发送位置；
其中，对于频域发送位置按照以下方式进行设置：Among them, the sending position in the frequency domain is set in the following manner:
(1)逻辑索引为0的天线的参考信号在频域的初始位置为第0个RE；(1) The initial position of the reference signal of the antenna whose logical index is 0 in the frequency domain is the 0th RE;
(2)在同一个OFDM符号上，同一根天线的参考信号间隔为12个RE，相邻两根天线的参考信号间隔为3个RE；(2) On the same OFDM symbol, the reference signal interval of the same antenna is 12 REs, and the reference signal interval of two adjacent antennas is 3 REs;
(3)在发送逻辑索引为0、1、2、3的天线的参考信号的两个相邻的OFDM符号上，设置同一个天线的频域上相邻的两个参考信号间隔6个RE；在发送逻辑索引为4、5、6、7的天线的参考信号的两个相邻的OFDM符号上，设置同一个天线的频域上相邻的两个参考信号间隔6个RE。(3) On the two adjacent OFDM symbols that transmit the reference signals of the antennas whose logical indexes are 0, 1, 2, and 3, set an interval of 6 REs between two adjacent reference signals in the frequency domain of the same antenna; On two adjacent OFDM symbols that transmit reference signals of antennas with
其中，对于时域发送位置按照以下方式进行设置：Among them, the sending position in the time domain is set in the following manner:
(1)将逻辑索引为0、1、2、3的天线的参考信号设置在同一个OFDM符号上；并且，将逻辑索引为0、1、2、3的天线的参考信号设置在每个时隙的第1个OFDM符号上；(1) Set the reference signals of the antennas with
(2)将逻辑索引为4、5、6、7的天线的参考信号设置在同一个OFDM符号上；并且，将逻辑索引为4、5、6、7的天线的参考信号设置在每个时隙的第2个OFDM符号上。(2) set the reference signals of the antennas whose logical indexes are 4, 5, 6, and 7 on the same OFDM symbol; and set the reference signals of the antennas whose logical indexes are 4, 5, 6, and 7 at each time on the second OFDM symbol of the slot.
步骤二，将逻辑索引映射成天线端口，即，将逻辑索引0、1、2、3分别映射成天线端口a、a+1、a+2、a+3；将逻辑索引4、5、6、7分别映射成天线端口b、b+1、b+2、b+3；并在天线端口发送对应的天线参考信号，其中，a＝0，b＝4。Step 2: Map the logical indices to antenna ports, that is, map
通过以上实施步骤，形成如图11所示的天线参考信号的发送位置，此外，a的取值还可以为{6，7，8，9}中的一个，b的取值还可以为{5，6，7，8，9，10，11，12，13}中的一个。Through the above implementation steps, the sending position of the antenna reference signal as shown in Figure 11 is formed. In addition, the value of a can also be one of {6, 7, 8, 9}, and the value of b can also be {5 , 6, 7, 8, 9, 10, 11, 12, 13} in one.
实施例八Embodiment Eight
图12是根据本发明实施例八的下行参考信号的发送方法的示意图，如图12所示，在扩展CP的条件下，小区ID为0，偶数时隙包括OFDM符号l＝0至l＝5，奇数时隙包括OFDM符号l＝0至l＝5，该方法包括以下步骤：FIG. 12 is a schematic diagram of a downlink reference signal transmission method according to Embodiment 8 of the present invention. As shown in FIG. 12 , under the condition of extended CP, the cell ID is 0, and even time slots include OFDM symbols l=0 to l=5 , odd time slots include OFDM symbols l=0 to l=5, the method includes the following steps:
步骤一，设置天线的参考信号的频域发送位置和时域发送位置；
其中，对于频域发送位置按照以下方式进行设置：Among them, the sending position in the frequency domain is set in the following manner:
(1)逻辑索引为0的天线的参考信号在频域的初始位置为第0个RE；(1) The initial position of the reference signal of the antenna whose logical index is 0 in the frequency domain is the 0th RE;
(2)在同一个OFDM符号上，同一根天线的参考信号间隔为12个RE，相邻两根天线的参考信号间隔为3个RE；(2) On the same OFDM symbol, the reference signal interval of the same antenna is 12 REs, and the reference signal interval of two adjacent antennas is 3 REs;
(3)在发送逻辑索引为0、1、2、3的天线的参考信号的两个相邻的OFDM符号上，设置同一个天线的频域上相邻的两个参考信号间隔6个RE；在发送逻辑索引为4、5、6、7的天线的参考信号的两个相邻的OFDM符号上，设置同一个天线的频域上相邻的两个参考信号间隔6个RE。(3) On the two adjacent OFDM symbols that transmit the reference signals of the antennas whose logical indexes are 0, 1, 2, and 3, set an interval of 6 REs between two adjacent reference signals in the frequency domain of the same antenna; On two adjacent OFDM symbols that transmit reference signals of antennas with
其中，对于时域发送位置按照以下方式进行设置：Among them, the sending position in the time domain is set in the following manner:
(1)将逻辑索引为0、1、2、3的天线的参考信号设置在同一个OFDM符号上；并且，将逻辑索引为0、1、2、3的天线的参考信号设置在每个时隙的第1个OFDM符号上；(1) Set the reference signals of the antennas with
(2)将逻辑索引为4、5、6、7的天线的参考信号设置在同一个OFDM符号上；并且，将逻辑索引为4、5、6、7的天线的参考信号设置在每个时隙的第2个OFDM符号上。(2) set the reference signals of the antennas whose logical indexes are 4, 5, 6, and 7 on the same OFDM symbol; and set the reference signals of the antennas whose logical indexes are 4, 5, 6, and 7 at each time on the second OFDM symbol of the slot.
步骤二，将逻辑索引映射成天线端口，即，将逻辑索引0、1、2、3分别映射成天线端口a、a+1、a+2、a+3；将逻辑索引4、5、6、7分别映射成天线端口b、b+1、b+2、b+3；并在天线端口发送对应的天线参考信号，其中，a＝0，b＝4。Step 2: Map the logical indices to antenna ports, that is, map
通过以上实施步骤，形成如图12所示的天线参考信号的发送位置，此外，a的取值还可以为{6，7，8，9}中的一个，b的取值还可以为{5，6，7，8，9，10，11，12，13}中的一个。Through the above implementation steps, the sending position of the antenna reference signal as shown in Figure 12 is formed. In addition, the value of a can also be one of {6, 7, 8, 9}, and the value of b can also be {5 , 6, 7, 8, 9, 10, 11, 12, 13} in one.
实施例九Embodiment nine
图13是根据本发明实施例九的下行参考信号的发送方法的示意图，如图13所示，在普通CP的条件下，小区ID为0，偶数时隙包括OFDM符号l＝0至l＝6，奇数时隙包括OFDM符号l＝0至l＝6，该方法包括以下步骤：FIG. 13 is a schematic diagram of a downlink reference signal transmission method according to Embodiment 9 of the present invention. As shown in FIG. 13 , under the condition of a common CP, the cell ID is 0, and even time slots include OFDM symbols l=0 to l=6 , the odd time slot includes OFDM symbols l=0 to l=6, the method includes the following steps:
步骤一，设置天线的参考信号的频域发送位置和时域发送位置；
其中，对于频域发送位置按照以下方式进行设置：Among them, the sending position in the frequency domain is set in the following manner:
(1)逻辑索引为0的天线的参考信号在频域的初始位置为第0个RE；(1) The initial position of the reference signal of the antenna whose logical index is 0 in the frequency domain is the 0th RE;
(2)在同一个OFDM符号上，同一根天线的参考信号间隔为12个RE，相邻两根天线的参考信号间隔为3个RE；(2) On the same OFDM symbol, the reference signal interval of the same antenna is 12 REs, and the reference signal interval of two adjacent antennas is 3 REs;
(3)在发送逻辑索引为0、1、2、3的天线的参考信号的两个相邻的OFDM符号上，设置同一个天线的频域上相邻的两个参考信号间隔6个RE；在发送逻辑索引为4、5、6、7的天线的参考信号的两个相邻的OFDM符号上，设置同一个天线的频域上相邻的两个参考信号间隔6个RE。(3) On the two adjacent OFDM symbols that transmit the reference signals of the antennas whose logical indexes are 0, 1, 2, and 3, set an interval of 6 REs between two adjacent reference signals in the frequency domain of the same antenna; On two adjacent OFDM symbols that transmit reference signals of antennas with
其中，对于时域发送位置按照以下方式进行设置：Among them, the sending position in the time domain is set in the following manner:
(1)将逻辑索引为0、1、2、3的天线的参考信号设置在同一个OFDM符号上；并且，将逻辑索引为0、1、2、3的天线的参考信号设置在每个时隙的第1个OFDM符号上；(1) Set the reference signals of the antennas with
(2)将逻辑索引为4、5、6、7的天线的参考信号设置在同一个OFDM符号上；并且，将逻辑索引为4、5、6、7的天线的参考信号设置在每个时隙的第2个OFDM符号上。(2) set the reference signals of the antennas whose logical indexes are 4, 5, 6, and 7 on the same OFDM symbol; and set the reference signals of the antennas whose logical indexes are 4, 5, 6, and 7 at each time on the second OFDM symbol of the slot.
步骤二，将逻辑索引映射成天线端口，即，将逻辑索引0、1、2、3分别映射成天线端口a、a+1、a+2、a+3；将逻辑索引4、5、6、7分别映射成天线端口b、b+1、b+2、b+3；并在天线端口发送对应的天线参考信号，其中，a＝6，b＝10。Step 2: Map the logical indices to antenna ports, that is, map
通过以上实施步骤，形成如图13所示的天线参考信号的发送位置，此外，a的取值还可以为{0，7，8，9}中的一个，b的取值还可以为{4，5，6，7，8，9，11，12，13}中的一个。Through the above implementation steps, the sending position of the antenna reference signal as shown in Figure 13 is formed. In addition, the value of a can also be one of {0, 7, 8, 9}, and the value of b can also be {4 , 5, 6, 7, 8, 9, 11, 12, 13} in one.
实施例十Embodiment ten
图14是根据本发明实施例十的下行参考信号的发送方法的示意图，如图14所示，在扩展CP的条件下，小区ID为0，偶数时隙包括OFDM符号l＝0至l＝5，奇数时隙包括OFDM符号l＝0至l＝5，该方法包括以下步骤：FIG. 14 is a schematic diagram of a downlink reference signal sending method according to Embodiment 10 of the present invention. As shown in FIG. 14 , under the condition of extended CP, the cell ID is 0, and even time slots include OFDM symbols l=0 to l=5 , odd time slots include OFDM symbols l=0 to l=5, the method includes the following steps:
步骤一，设置天线的参考信号的频域发送位置和时域发送位置；
其中，对于频域发送位置按照以下方式进行设置：Among them, the sending position in the frequency domain is set in the following manner:
(1)逻辑索引为0的天线的参考信号在频域的初始位置为第0个RE；(1) The initial position of the reference signal of the antenna whose logical index is 0 in the frequency domain is the 0th RE;
(2)在同一个OFDM符号上，同一根天线的参考信号间隔为12个RE，相邻两根天线的参考信号间隔为3个RE；(2) On the same OFDM symbol, the reference signal interval of the same antenna is 12 REs, and the reference signal interval of two adjacent antennas is 3 REs;
(3)在发送逻辑索引为0、1、2、3的天线的参考信号的两个相邻的OFDM符号上，设置同一个天线的频域上相邻的两个参考信号间隔6个RE；在发送逻辑索引为4、5、6、7的天线的参考信号的两个相邻的OFDM符号上，设置同一个天线的频域上相邻的两个参考信号间隔6个RE。(3) On the two adjacent OFDM symbols that transmit the reference signals of the antennas whose logical indexes are 0, 1, 2, and 3, set an interval of 6 REs between two adjacent reference signals in the frequency domain of the same antenna; On two adjacent OFDM symbols that transmit reference signals of antennas with
其中，对于时域发送位置按照以下方式进行设置：Among them, the sending position in the time domain is set in the following manner:
(1)将逻辑索引为0、1、2、3的天线的参考信号设置在同一个OFDM符号上；并且，将逻辑索引为0、1、2、3的天线的参考信号设置在每个时隙的第1个OFDM符号上；(1) Set the reference signals of the antennas with
(2)将逻辑索引为4、5、6、7的天线的参考信号设置在同一个OFDM符号上；并且，将逻辑索引为4、5、6、7的天线的参考信号设置在每个时隙的第2个OFDM符号上。(2) set the reference signals of the antennas whose logical indexes are 4, 5, 6, and 7 on the same OFDM symbol; and set the reference signals of the antennas whose logical indexes are 4, 5, 6, and 7 at each time on the second OFDM symbol of the slot.
步骤二，将逻辑索引映射成天线端口，即，将逻辑索引0、1、2、3分别映射成天线端口a、a+1、a+2、a+3；将逻辑索引4、5、6、7分别映射成天线端口b、b+1、b+2、b+3；并在天线端口发送对应的天线参考信号，其中，a＝6，b＝10。Step 2: Map the logical indices to antenna ports, that is, map
通过以上实施步骤，形成如图14所示的天线参考信号的发送位置，此外，a的取值还可以为{0，7，8，9}中的一个，b的取值还可以为{4，5，6，7，8，9，11，12，13}中的一个。Through the above implementation steps, the sending position of the antenna reference signal as shown in Figure 14 is formed. In addition, the value of a can also be one of {0, 7, 8, 9}, and the value of b can also be {4 , 5, 6, 7, 8, 9, 11, 12, 13} in one.
实施例十一Embodiment Eleven
图15是根据本发明实施例十一的下行参考信号的发送方法的示意图，如图15所示，在普通CP的条件下，小区ID为0，偶数时隙包括OFDM符号l＝0至l＝6，奇数时隙包括OFDM符号l＝0至l＝6，该方法包括以下步骤：FIG. 15 is a schematic diagram of a downlink reference signal sending method according to Embodiment 11 of the present invention. As shown in FIG. 15 , under the condition of a common CP, the cell ID is 0, and even time slots include OFDM symbols l=0 to l= 6. Odd-numbered time slots include OFDM symbols l=0 to l=6, and the method includes the following steps:
步骤一，设置天线的参考信号的频域发送位置和时域发送位置；
其中，对于频域发送位置按照以下方式进行设置：Among them, the sending position in the frequency domain is set in the following manner:
(1)逻辑索引为0的天线的参考信号在频域的初始位置为第0个RE；(1) The initial position of the reference signal of the antenna whose logical index is 0 in the frequency domain is the 0th RE;
(2)在同一个OFDM符号上，同一根天线的参考信号间隔为12个RE，相邻两根天线的参考信号间隔为3个RE；(2) On the same OFDM symbol, the reference signal interval of the same antenna is 12 REs, and the reference signal interval of two adjacent antennas is 3 REs;
(3)在发送逻辑索引为0、1、2、3的天线的参考信号的两个相邻的OFDM符号上，设置同一个天线的频域上相邻的两个参考信号间隔6个RE；在发送逻辑索引为4、5、6、7的天线的参考信号的两个相邻的OFDM符号上，设置同一个天线的频域上相邻的两个参考信号间隔6个RE。(3) On the two adjacent OFDM symbols that transmit the reference signals of the antennas whose logical indexes are 0, 1, 2, and 3, set an interval of 6 REs between two adjacent reference signals in the frequency domain of the same antenna; On two adjacent OFDM symbols that transmit reference signals of antennas with
其中，对于时域发送位置按照以下方式进行设置：Among them, the sending position in the time domain is set in the following manner:
(1)将逻辑索引为0、1、2、3的天线的参考信号设置在同一个OFDM符号上；并且，将逻辑索引为0、1、2、3的天线的参考信号设置在每个时隙的第1个OFDM符号及倒数第3个OFDM符号上；(1) Set the reference signals of the antennas with
(2)将逻辑索引为4、5、6、7的天线的参考信号设置在同一个OFDM符号上；并且，将逻辑索引为4、5、6、7的天线的参考信号设置在每个时隙的第2个OFDM符号上。(2) set the reference signals of the antennas whose logical indexes are 4, 5, 6, and 7 on the same OFDM symbol; and set the reference signals of the antennas whose logical indexes are 4, 5, 6, and 7 at each time on the second OFDM symbol of the slot.
步骤二，将逻辑索引映射成天线端口，即，将逻辑索引0、1、2、3分别映射成天线端口a、a+1、a+2、a+3；将逻辑索引4、5、6、7分别映射成天线端口b、b+1、b+2、b+3；并在天线端口发送对应的天线参考信号，其中，a＝6，b＝10。Step 2: Map the logical indices to antenna ports, that is, map
通过以上实施步骤，形成如图15所示的天线参考信号的发送位置，此外，a的取值还可以为{0，7，8，9}中的一个，b的取值还可以为{4，5，6，7，8，9，11，12，13}中的一个。Through the above implementation steps, the sending position of the antenna reference signal as shown in Figure 15 is formed. In addition, the value of a can also be one of {0, 7, 8, 9}, and the value of b can also be {4 , 5, 6, 7, 8, 9, 11, 12, 13} in one.
实施例十二Embodiment 12
图16是根据本发明实施例十二的下行参考信号的发送方法的示意图，如图16所示，在扩展CP的条件下，小区ID为0，偶数时隙包括OFDM符号l＝0至l＝5，奇数时隙包括OFDM符号l＝0至l＝5，该方法包括以下步骤：FIG. 16 is a schematic diagram of a method for sending a downlink reference signal according to Embodiment 12 of the present invention. As shown in FIG. 16 , under the condition of extended CP, the cell ID is 0, and even time slots include OFDM symbols l=0 to l= 5. Odd-numbered time slots include OFDM symbols l=0 to l=5, and the method includes the following steps:
步骤一，设置天线的参考信号的频域发送位置和时域发送位置；
其中，对于频域发送位置按照以下方式进行设置：Among them, the sending position in the frequency domain is set in the following manner:
(1)逻辑索引为0的天线的参考信号在频域的初始位置为第0个RE；(1) The initial position of the reference signal of the antenna whose logical index is 0 in the frequency domain is the 0th RE;
(2)在同一个OFDM符号上，同一根天线的参考信号间隔为12个RE，相邻两根天线的参考信号间隔为3个RE；(2) On the same OFDM symbol, the reference signal interval of the same antenna is 12 REs, and the reference signal interval of two adjacent antennas is 3 REs;
(3)在发送逻辑索引为0、1、2、3的天线的参考信号的两个相邻的OFDM符号上，设置同一个天线的频域上相邻的两个参考信号间隔6个RE；在发送逻辑索引为4、5、6、7的天线的参考信号的两个相邻的OFDM符号上，设置同一个天线的频域上相邻的两个参考信号间隔6个RE。(3) On the two adjacent OFDM symbols that transmit the reference signals of the antennas whose logical indexes are 0, 1, 2, and 3, set an interval of 6 REs between two adjacent reference signals in the frequency domain of the same antenna; On two adjacent OFDM symbols that transmit reference signals of antennas with
其中，对于时域发送位置按照以下方式进行设置：Among them, the sending position in the time domain is set in the following manner:
(1)将逻辑索引为0、1、2、3的天线的参考信号设置在同一个OFDM符号上；并且，将逻辑索引为0、1、2、3的天线的参考信号设置在每个时隙的第1个OFDM符号及倒数第3个OFDM符号上；(1) Set the reference signals of the antennas with
(2)将逻辑索引为4、5、6、7的天线的参考信号设置在同一个OFDM符号上；并且，将逻辑索引为4、5、6、7的天线的参考信号设置在每个时隙的第2个OFDM符号上。(2) set the reference signals of the antennas whose logical indexes are 4, 5, 6, and 7 on the same OFDM symbol; and set the reference signals of the antennas whose logical indexes are 4, 5, 6, and 7 at each time on the second OFDM symbol of the slot.
步骤二，将逻辑索引映射成天线端口，即，将逻辑索引0、1、2、3分别映射成天线端口a、a+1、a+2、a+3；将逻辑索引4、5、6、7分别映射成天线端口b、b+1、b+2、b+3；并在天线端口发送对应的天线参考信号，其中，a＝6，b＝10。Step 2: Map the logical indices to antenna ports, that is, map
通过以上实施步骤，形成如图16所示的天线参考信号的发送位置，此外，a的取值还可以为{0，7，8，9}中的一个，b的取值还可以为{4，5，6，7，8，9，11，12，13}中的一个。Through the above implementation steps, the sending position of the antenna reference signal as shown in Figure 16 is formed. In addition, the value of a can also be one of {0, 7, 8, 9}, and the value of b can also be {4 , 5, 6, 7, 8, 9, 11, 12, 13} in one.
实施例十三Embodiment Thirteen
图17是根据本发明实施例十三的下行参考信号的发送方法的示意图，如图17所示，在普通CP的条件下，小区ID为0，偶数时隙包括OFDM符号l＝0至l＝6，奇数时隙包括OFDM符号l＝0至l＝6，该方法包括以下步骤：17 is a schematic diagram of a method for sending a downlink reference signal according to Embodiment 13 of the present invention. As shown in FIG. 17 , under the condition of a common CP, the cell ID is 0, and even time slots include OFDM symbols l=0 to l= 6. Odd-numbered time slots include OFDM symbols l=0 to l=6, and the method includes the following steps:
步骤一，设置天线的参考信号的频域发送位置和时域发送位置；
其中，对于频域发送位置按照以下方式进行设置：Among them, the sending position in the frequency domain is set in the following manner:
(1)逻辑索引为0的天线的参考信号在频域的初始位置为第0个RE；(1) The initial position of the reference signal of the antenna whose logical index is 0 in the frequency domain is the 0th RE;
(2)在同一个OFDM符号上，同一根天线的参考信号间隔为12个RE，相邻两根天线的参考信号间隔为3个RE；(2) On the same OFDM symbol, the reference signal interval of the same antenna is 12 REs, and the reference signal interval of two adjacent antennas is 3 REs;
(3)在发送逻辑索引为0、1、2、3的天线的参考信号的两个相邻的OFDM符号上，设置同一个天线的频域上相邻的两个参考信号间隔6个RE；在发送逻辑索引为4、5、6、7的天线的参考信号的两个相邻的OFDM符号上，设置同一个天线的频域上相邻的两个参考信号间隔6个RE。(3) On the two adjacent OFDM symbols that transmit the reference signals of the antennas whose logical indexes are 0, 1, 2, and 3, set an interval of 6 REs between two adjacent reference signals in the frequency domain of the same antenna; On two adjacent OFDM symbols that transmit reference signals of antennas with
其中，对于时域发送位置按照以下方式进行设置：Among them, the sending position in the time domain is set in the following manner:
(1)将逻辑索引为0、1、2、3的天线的参考信号设置在同一个OFDM符号上；并且，将逻辑索引为0、1、2、3的天线的参考信号设置在每个时隙的第1个OFDM符号上；(1) Set the reference signals of the antennas with
(2)将逻辑索引为4、5、6、7的天线的参考信号设置在同一个OFDM符号上；并且，将逻辑索引为4、5、6、7的天线的参考信号设置在每个时隙的第2个OFDM符号上。(2) set the reference signals of the antennas whose logical indexes are 4, 5, 6, and 7 on the same OFDM symbol; and set the reference signals of the antennas whose logical indexes are 4, 5, 6, and 7 at each time on the second OFDM symbol of the slot.
步骤二，将逻辑索引映射成天线端口，即，将逻辑索引0、1、2、3分别映射成天线端口a、a+1、b、b+1；将逻辑索引4、5、6、7分别映射成天线端口a+2、a+3、b+2、b+3；并在天线端口发送对应的天线参考信号，其中，a＝0，b＝6。Step 2: Map the logical indices to antenna ports, that is, map
通过以上实施步骤，形成如图17所示的天线参考信号的发送位置，此外，a的取值还可以为{6，7，8，9}中的一个，b的取值还可以为{4，5，7，8，9，10，11，12，13}中的一个。Through the above implementation steps, the sending position of the antenna reference signal as shown in Figure 17 is formed. In addition, the value of a can also be one of {6, 7, 8, 9}, and the value of b can also be {4 , 5, 7, 8, 9, 10, 11, 12, 13} in one.
实施例十四Embodiment Fourteen
图18是根据本发明实施例十四的下行参考信号的发送方法的示意图，如图18所示，在扩展CP的条件下，小区ID为0，偶数时隙包括OFDM符号l＝0至l＝5，奇数时隙包括OFDM符号l＝0至l＝5，该方法包括以下步骤：FIG. 18 is a schematic diagram of a downlink reference signal transmission method according to Embodiment 14 of the present invention. As shown in FIG. 18 , under the condition of extended CP, the cell ID is 0, and even time slots include OFDM symbols l=0 to l= 5. Odd-numbered time slots include OFDM symbols l=0 to l=5, and the method includes the following steps:
步骤一，设置天线的参考信号的频域发送位置和时域发送位置；
其中，对于频域发送位置按照以下方式进行设置：Among them, the sending position in the frequency domain is set in the following manner:
(1)逻辑索引为0的天线的参考信号在频域的初始位置为第0个RE；(1) The initial position of the reference signal of the antenna whose logical index is 0 in the frequency domain is the 0th RE;
(2)在同一个OFDM符号上，同一根天线的参考信号间隔为12个RE，相邻两根天线的参考信号间隔为3个RE；(2) On the same OFDM symbol, the reference signal interval of the same antenna is 12 REs, and the reference signal interval of two adjacent antennas is 3 REs;
(3)在发送逻辑索引为0、1、2、3的天线的参考信号的两个相邻的OFDM符号上，设置同一个天线的频域上相邻的两个参考信号间隔6个RE；在发送逻辑索引为4、5、6、7的天线的参考信号的两个相邻的OFDM符号上，设置同一个天线的频域上相邻的两个参考信号间隔6个RE。(3) On the two adjacent OFDM symbols that transmit the reference signals of the antennas whose logical indexes are 0, 1, 2, and 3, set an interval of 6 REs between two adjacent reference signals in the frequency domain of the same antenna; On two adjacent OFDM symbols that transmit reference signals of antennas with
其中，对于时域发送位置按照以下方式进行设置：Among them, the sending position in the time domain is set in the following manner:
(1)将逻辑索引为0、1、2、3的天线的参考信号设置在同一个OFDM符号上；并且，将逻辑索引为0、1、2、3的天线的参考信号设置在每个时隙的第1个OFDM符号上；(1) Set the reference signals of the antennas with
(2)将逻辑索引为4、5、6、7的天线的参考信号设置在同一个OFDM符号上；并且，将逻辑索引为4、5、6、7的天线的参考信号设置在每个时隙的第2个OFDM符号上。(2) set the reference signals of the antennas whose logical indexes are 4, 5, 6, and 7 on the same OFDM symbol; and set the reference signals of the antennas whose logical indexes are 4, 5, 6, and 7 at each time on the second OFDM symbol of the slot.
步骤二，将逻辑索引映射成天线端口，即，将逻辑索引0、1、2、3分别映射成天线端口a、a+1、b、b+1；将逻辑索引4、5、6、7分别映射成天线端口a+2、a+3、b+2、b+3；并在天线端口发送对应的天线参考信号，其中，a＝0，b＝6。Step 2: Map the logical indices to antenna ports, that is, map
通过以上实施步骤，形成如图18所示的天线参考信号的发送位置，此外，a的取值还可以为{6，7，8，9}中的一个，b的取值还可以为{4，5，7，8，9，10，11，12，13}中的一个。Through the above implementation steps, the sending position of the antenna reference signal as shown in Figure 18 is formed. In addition, the value of a can also be one of {6, 7, 8, 9}, and the value of b can also be {4 , 5, 7, 8, 9, 10, 11, 12, 13} in one.
实施例十五Embodiment 15
图19是根据本发明实施例十五的下行参考信号的发送方法的示意图，如图19所示，在普通CP的条件下，小区ID为0，偶数时隙包括OFDM符号l＝0至l＝6，奇数时隙包括OFDM符号l＝0至l＝6，该方法包括以下步骤：19 is a schematic diagram of a downlink reference signal transmission method according to Embodiment 15 of the present invention. As shown in FIG. 19 , under the condition of a common CP, the cell ID is 0, and even time slots include OFDM symbols l=0 to l= 6. Odd-numbered time slots include OFDM symbols l=0 to l=6, and the method includes the following steps:
步骤一，设置天线的参考信号的频域发送位置和时域发送位置；
其中，对于频域发送位置按照以下方式进行设置：Among them, the sending position in the frequency domain is set in the following manner:
(1)逻辑索引为0的天线的参考信号在频域的初始位置为第0个RE；(1) The initial position of the reference signal of the antenna whose logical index is 0 in the frequency domain is the 0th RE;
(2)在同一个OFDM符号上，同一根天线的参考信号间隔为12个RE，相邻两根天线的参考信号间隔为3个RE；(2) On the same OFDM symbol, the reference signal interval of the same antenna is 12 REs, and the reference signal interval of two adjacent antennas is 3 REs;
(3)在发送逻辑索引为0、1、2、3的天线的参考信号的两个相邻的OFDM符号上，设置同一个天线的频域上相邻的两个参考信号间隔6个RE；在发送逻辑索引为4、5、6、7的天线的参考信号的两个相邻的OFDM符号上，设置同一个天线的频域上相邻的两个参考信号间隔6个RE。(3) On the two adjacent OFDM symbols that transmit the reference signals of the antennas whose logical indexes are 0, 1, 2, and 3, set an interval of 6 REs between two adjacent reference signals in the frequency domain of the same antenna; On two adjacent OFDM symbols that transmit reference signals of antennas with
其中，对于时域发送位置按照以下方式进行设置：Among them, the sending position in the time domain is set in the following manner:
(1)将逻辑索引为0、1、2、3的天线的参考信号设置在同一个OFDM符号上；并且，将逻辑索引为0、1、2、3的天线的参考信号设置在每个时隙的第1个OFDM符号及倒数第3个OFDM符号上；(1) Set the reference signals of the antennas with
(2)将逻辑索引为4、5、6、7的天线的参考信号设置在同一个OFDM符号上；并且，将逻辑索引为4、5、6、7的天线的参考信号设置在每个时隙的第2个OFDM符号上。(2) set the reference signals of the antennas whose logical indexes are 4, 5, 6, and 7 on the same OFDM symbol; and set the reference signals of the antennas whose logical indexes are 4, 5, 6, and 7 at each time on the second OFDM symbol of the slot.
步骤二，将逻辑索引映射成天线端口，即，将逻辑索引0、1、2、3分别映射成天线端口a、a+1、b、b+1；将逻辑索引4、5、6、7分别映射成天线端口a+2、a+3、b+2、b+3；并在天线端口发送对应的天线参考信号，其中，a＝0，b＝6。Step 2: Map the logical indices to antenna ports, that is, map
通过以上实施步骤，形成如图19所示的天线参考信号的发送位置，此外，a的取值还可以为{6，7，8，9}中的一个，b的取值还可以为{4，5，7，8，9，10，11，12，13}中的一个。Through the above implementation steps, the sending position of the antenna reference signal as shown in Figure 19 is formed. In addition, the value of a can also be one of {6, 7, 8, 9}, and the value of b can also be {4 , 5, 7, 8, 9, 10, 11, 12, 13} in one.
实施例十六Embodiment sixteen
图20是根据本发明实施例十六的下行参考信号的发送方法的示意图，如图20所示，在扩展CP的条件下，小区ID为0，偶数时隙包括OFDM符号l＝0至l＝5，奇数时隙包括OFDM符号l＝0至l＝5，该方法包括以下步骤：FIG. 20 is a schematic diagram of a method for sending a downlink reference signal according to Embodiment 16 of the present invention. As shown in FIG. 20 , under the condition of extended CP, the cell ID is 0, and even time slots include OFDM symbols l=0 to l= 5. Odd-numbered time slots include OFDM symbols l=0 to l=5, and the method includes the following steps:
步骤一，设置天线的参考信号的频域发送位置和时域发送位置；
其中，对于频域发送位置按照以下方式进行设置：Among them, the sending position in the frequency domain is set in the following manner:
(1)逻辑索引为0的天线的参考信号在频域的初始位置为第0个RE；(1) The initial position of the reference signal of the antenna whose logical index is 0 in the frequency domain is the 0th RE;
(2)在同一个OFDM符号上，同一根天线的参考信号间隔为12个RE，相邻两根天线的参考信号间隔为3个RE；(2) On the same OFDM symbol, the reference signal interval of the same antenna is 12 REs, and the reference signal interval of two adjacent antennas is 3 REs;
(3)在发送逻辑索引为0、1、2、3的天线的参考信号的两个相邻的OFDM符号上，设置同一个天线的频域上相邻的两个参考信号间隔6个RE；在发送逻辑索引为4、5、6、7的天线的参考信号的两个相邻的OFDM符号上，设置同一个天线的频域上相邻的两个参考信号间隔6个RE。(3) On the two adjacent OFDM symbols that transmit the reference signals of the antennas whose logical indexes are 0, 1, 2, and 3, set an interval of 6 REs between two adjacent reference signals in the frequency domain of the same antenna; On two adjacent OFDM symbols that transmit reference signals of antennas with
其中，对于时域发送位置按照以下方式进行设置：Among them, the sending position in the time domain is set in the following manner:
(1)将逻辑索引为0、1、2、3的天线的参考信号设置在同一个OFDM符号上；并且，将逻辑索引为0、1、2、3的天线的参考信号设置在每个时隙的第1个OFDM符号及倒数第3个OFDM符号上；(1) Set the reference signals of the antennas with
(2)将逻辑索引为4、5、6、7的天线的参考信号设置在同一个OFDM符号上；并且，将逻辑索引为4、5、6、7的天线的参考信号设置在每个时隙的第2个OFDM符号上。(2) set the reference signals of the antennas whose logical indexes are 4, 5, 6, and 7 on the same OFDM symbol; and set the reference signals of the antennas whose logical indexes are 4, 5, 6, and 7 at each time on the second OFDM symbol of the slot.
步骤二，将逻辑索引映射成天线端口，即，将逻辑索引0、1、2、3分别映射成天线端口a、a+1、b、b+1；将逻辑索引4、5、6、7分别映射成天线端口a+2、a+3、b+2、b+3；并在天线端口发送对应的天线参考信号，其中，a＝0，b＝6。Step 2: Map the logical indices to antenna ports, that is, map
通过以上实施步骤，形成如图20所示的天线参考信号的发送位置，此外，a的取值还可以为{6，7，8，9}中的一个，b的取值还可以为{4，5，7，8，9，10，11，12，13}中的一个。Through the above implementation steps, the sending position of the antenna reference signal as shown in Figure 20 is formed. In addition, the value of a can also be one of {6, 7, 8, 9}, and the value of b can also be {4 , 5, 7, 8, 9, 10, 11, 12, 13} in one.
装置实施例Device embodiment
根据本发明的实施例，提供了一种下行参考信号的发送装置，该方法基于8天线发射方式，8天线分别用逻辑索引0-7表示。图21是根据本发明实施例的下行参考信号的发送方法的流程图，如图21所示，该装置包括：频域设置模块212、时域设置模块214、映射模块216、发送模块218，下面对以上结构进行详细描述。According to an embodiment of the present invention, a device for sending a downlink reference signal is provided. The method is based on an 8-antenna transmission mode, and the 8 antennas are respectively represented by logical indices 0-7. Fig. 21 is a flowchart of a method for sending a downlink reference signal according to an embodiment of the present invention. As shown in Fig. 21 , the device includes: a frequency domain setting module 212, a time domain setting module 214, a
频域设置模块212，用于设置天线的参考信号的频域发送位置；其中，对于频域发送位置按照以下方式进行设置：根据小区标识确定每根天线的参考信号在频域的初始位置；在同一个OFDM符号上，将同一天线的参考信号间隔设置为12个RE，将相邻两根天线的参考信号间隔设置为3个RE；在发送相同的天线的参考信号的两个相邻的OFDM符号上，将同一天线在频域上相邻的两个参考信号间隔设置为6个RE，其中，参考信号间隔为n是指两个参考信号所占用的资源元素之间有n-1个资源元素，n的取值为以下之一：3、6、12；The frequency domain setting module 212 is used to set the frequency domain transmission position of the reference signal of the antenna; wherein, the frequency domain transmission position is set in the following manner: determine the initial position of the reference signal of each antenna in the frequency domain according to the cell identity; On the same OFDM symbol, set the reference signal interval of the same antenna to 12 REs, and set the reference signal interval of two adjacent antennas to 3 REs; two adjacent OFDM In terms of symbols, the interval between two reference signals adjacent to the same antenna in the frequency domain is set to 6 REs, where the reference signal interval is n means that there are n-1 resources between the resource elements occupied by the two reference signals element, the value of n is one of the following: 3, 6, 12;
时域设置模块214，用于设置天线的参考信号的时域发送位置；其中，对于时域发送位置按照以下方式进行设置：将逻辑索引为0、1、2、3的天线的参考信号设置在同一个OFDM符号上；将逻辑索引为4、5、6、7的天线的参考信号设置在同一个OFDM符号上；The time domain setting module 214 is used to set the time domain transmission position of the reference signal of the antenna; wherein, the time domain transmission position is set in the following manner: the reference signal of the antenna whose logical index is 0, 1, 2, 3 is set at On the same OFDM symbol; set the reference signals of the antennas with
映射模块216，连接至频域设置模块212和时域设置模块214，用于将逻辑索引映射成天线端口；The
发送模块218，连接至映射模块216，用于在天线端口发送对应的天线参考信号。The sending
通过该实施例，提供了8天线时参考信号的发送装置，采用通过设置天线参考信号的频域发送位置和时域发送位置，并将逻辑索引映射成天线端口的方法，在保证与4天线相同开销的前提下，能够支持8天线系统的信道估计。Through this embodiment, a reference signal sending device for 8-antenna is provided. By setting the frequency-domain sending position and time-domain sending position of the antenna reference signal, and mapping the logical index to the antenna port, it is guaranteed to be the same as the 4-antenna Under the premise of overhead, it can support channel estimation of 8-antenna system.
下面对下行参考信号的发送装置的优选结构进行详细描述。The preferred structure of the device for sending the downlink reference signal will be described in detail below.
实施例一Embodiment one
图22是根据本发明实施例一的下行参考信号的发送装置的优选结构框图，如图22所示，该装置的优选结构如下：FIG. 22 is a block diagram of a preferred structure of a device for sending a downlink reference signal according to
频域设置模块212还包括：第一频域设置子模块2202，用于在发送逻辑索引为0、1、2、3的天线的参考信号的两个相邻的OFDM符号上，将同一天线在频域上相邻的两个参考信号间隔设置为6个RE；第二频域设置子模块2204，用于在发送逻辑索引为4、5、6、7的天线的参考信号的两个相邻的OFDM符号上，将同一天线在频域上相邻的两个参考信号间隔设置为6个RE。The frequency domain setting module 212 also includes: a first frequency domain setting submodule 2202, which is used to set the same antenna in the two adjacent OFDM symbols of the reference signal of the antenna whose logical index is 0, 1, 2, and 3. The interval between two adjacent reference signals in the frequency domain is set to 6 REs; the second frequency domain setting submodule 2204 is used to transmit two adjacent reference signals of antennas with
时域设置模块214还包括：第一时域设置子模块2206，用于将逻辑索引为0、1、2、3的天线的参考信号设置在每个时隙的第1个OFDM符号和倒数第3个OFDM符号上或者将逻辑索引为0、1、2、3的天线的参考信号设置在每个时隙的第1个正交频分复用符号上；第二时域设置子模块2208，用于将逻辑索引为4、5、6、7的天线的参考信号设置在每个时隙的第2个OFDM符号上。The time domain setting module 214 also includes: a first time domain setting submodule 2206, which is used to set the reference signals of the antennas whose logical indexes are 0, 1, 2, and 3 in the first OFDM symbol and the penultimate of each time slot On the 3 OFDM symbols or set the reference signals of the antennas with
映射模块216具体包括：第一映射子模块2210，用于将逻辑索引0、1、2、3分别映射成天线端口；第二映射子模块2212，用于将逻辑索引4、5、6、7分别映射成天线端口b、b+1、b+2、b+3；其中，a的取值为{0，6，7，8，9}中的一个，b的取值为{4，5，6，7，8，9，10，11，12，13}中的一个。The
实施例二Embodiment two
图23是根据本发明实施例二的下行参考信号的发送装置的优选结构框图，如图23所示，该装置的优选结构如下：FIG. 23 is a block diagram of a preferred structure of a device for sending a downlink reference signal according to
频域设置模块212还包括：第一频域设置子模块2302，用于在发送逻辑索引为0、1、2、3的天线的参考信号的两个相邻的OFDM符号上，将同一天线在频域上相邻的两个参考信号间隔设置为6个RE；第二频域设置子模块2304，用于在发送逻辑索引为4、5、6、7的天线的参考信号的两个相邻的OFDM符号上，将同一天线在频域上相邻的两个参考信号间隔设置为6个RE。The frequency domain setting module 212 also includes: a first frequency domain setting submodule 2302, which is used to set the same antenna in the two adjacent OFDM symbols of the reference signal of the antenna whose logical index is 0, 1, 2, and 3. The interval between two adjacent reference signals in the frequency domain is set to 6 REs; the second frequency
时域设置模块214还包括：第一时域设置子模块2306，用于将逻辑索引为0、1、2、3的天线的参考信号设置在每个时隙的第1个OFDM符号和倒数第3个OFDM符号上或者将逻辑索引为0、1、2、3的天线的参考信号设置在每个时隙的第1个正交频分复用符号上；第二时域设置子模块2308，用于将逻辑索引为4、5、6、7的天线的参考信号设置在每个时隙的第2个OFDM符号上。The time domain setting module 214 also includes: a first time domain setting submodule 2306, which is used to set the reference signals of the antennas whose logical indexes are 0, 1, 2, and 3 in the first OFDM symbol and the penultimate of each time slot On the 3 OFDM symbols or set the reference signal of the antenna whose logical index is 0, 1, 2, 3 on the first OFDM symbol of each time slot; the second time domain setting submodule 2308, The reference signals for antennas with
映射模块216具体包括：第三映射子模块2310，用于将逻辑索引0、1、2、3分别映射成天线端口a、a+1、a+2、a+3；第四映射子模块2312，用于将逻辑索引4、5、6、7分别映射成天线端口b、b+1、b+2、b+3；其中，a的取值为{0，6，7，8，9}中的一个，b的取值为{4，5，6，7，8，9，10，11，12，13}中的一个。The
通过本发明的实施例，采用通过设置天线参考信号的频域发送位置和时域发送位置，并将逻辑索引映射成天线端口的方法，解决了相关技术中需要一种能够支持8天线场景的导频设计方案的问题，进而在保证与4天线相同开销的前提下，能够支持8天线系统的信道估计。Through the embodiments of the present invention, the method of setting the frequency-domain transmission position and time-domain transmission position of the antenna reference signal and mapping the logical index to the antenna port solves the need for a guide that can support 8-antenna scenarios in the related art. Therefore, it can support the channel estimation of the 8-antenna system under the premise of ensuring the same overhead as the 4-antenna system.
显然，本领域的技术人员应该明白，上述的本发明的各模块或各步骤可以用通用的计算装置来实现，它们可以集中在单个的计算装置上，或者分布在多个计算装置所组成的网络上，可选地，它们可以用计算装置可执行的程序代码来实现，从而，可以将它们存储在存储装置中由计算装置来执行，或者将它们分别制作成各个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本发明不限制于任何特定的硬件和软件结合。Obviously, those skilled in the art should understand that each module or each step of the above-mentioned present invention can be realized by a general-purpose computing device, and they can be concentrated on a single computing device, or distributed in a network formed by multiple computing devices Optionally, they can be implemented with program codes executable by a computing device, so that they can be stored in a storage device and executed by a computing device, or they can be made into individual integrated circuit modules, or they can be integrated into Multiple modules or steps are fabricated into a single integrated circuit module to realize. As such, the present invention is not limited to any specific combination of hardware and software.
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.
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