WO2012155753A1

WO2012155753A1 - Transmission method and device

Info

Publication number: WO2012155753A1
Application number: PCT/CN2012/074292
Authority: WO
Inventors: 吴欣; 戴博; 夏树强; 左志松
Original assignee: 中兴通讯股份有限公司
Priority date: 2011-09-29
Filing date: 2012-04-18
Publication date: 2012-11-22
Also published as: CN102316526A; CN102316526B

Abstract

Disclosed are a transmission method and apparatus. The method comprises: setting a transmission mode X; sending downlink control information to a user equipment in a downlink control information format corresponding to the transmission mode X, the downlink control information format comprising at least one of the following: a downlink control information format 1A, a downlink control information format 0, a downlink control information format Y1, and a downlink control information format Y2. In the prior art no design solution of transmission mode required for reducing the load of PDCCH is decided yet. The embodiments of the present invention provide such a design solution of transmission mode. Through such a design of transmission mode and the corresponding reduction of the PDCCH load, the capacity of the PDCCH can be enhanced and the congestion rate of the PDCCH can be reduced, thereby facilitating actual applications.

Description

传输方法及装置技术领域本发明涉及通信领域，具体而言，涉及一种传输方法及装置。背景技术长期演进（Long Term Evolution, 简称为 LTE) ***中的无线帧（radio frame)包括频分双工（Frequency Division Duplex,简称为 FDD)模式和时分双工（Time Division Duplex, 简称为 TDD) 模式的帧结构。图 1是根据相关技术的 FDD模式的帧结构示意图，如图 1所示，一个 10毫秒（ms) 的无线帧由二十个长度为 0.5ms，编号 0~19 的时隙（slot) 组成，时隙 2i和 2i+l组成长度为 lms的子帧（subframe) i。图 2是根据相关技术的 TDD模式的帧结构示意图，如图 2所示，一个 10ms的无线帧由两个长为 5ms的半帧（half frame) 组成，一个半帧包括 5个长度为 lms的子帧，子帧 i定义为 2个长为 0.5ms的时隙 2i和 2i+l。在上述两种帧结构里，对于标准循环前缀（Normal Cyclic Prefix, Normal CP), 一个时隙包含 7个长度为 66.7微秒（us) 的符号，其中第一个符号的 CP 长度为 5.21us，其余 6 个符号的长度为 4.69m; 对于扩展循环前缀 (Extended Cyclic Prefix, Extended CP), 一个时隙包含 6个符号，所有符号的 CP长度均为 16.67us。 TECHNICAL FIELD The present invention relates to the field of communications, and in particular to a transmission method and apparatus. A radio frame in a Long Term Evolution (LTE) system includes a Frequency Division Duplex (FDD) mode and a Time Division Duplex (TDD). The frame structure of the pattern. 1 is a schematic diagram of a frame structure of an FDD mode according to the related art. As shown in FIG. 1, a 10 millisecond (ms) radio frame is composed of twenty slots of length 0.5 ms and numbers 0 to 19, The slots 2i and 2i+1 form a subframe i of length lms. 2 is a schematic diagram of a frame structure of a TDD mode according to the related art. As shown in FIG. 2, a 10 ms radio frame is composed of two half frames of 5 ms in length, and one field includes five lengths of 1 ms. Subframe, subframe i is defined as 2 slots 2i and 2i+1 that are 0.5 ms long. In the above two frame structures, for a Normal Cyclic Prefix (Normal CP), one slot contains seven symbols with a length of 66.7 microseconds (us), and the CP of the first symbol has a length of 5.21 us. The remaining 6 symbols have a length of 4.69m. For Extended Cyclic Prefix (Extended CP), one slot contains 6 symbols, and the CP length of all symbols is 16.67us.

LTE的版本号对应于 R8 (Release 8)，其增加版本对应的版本号为 R9 (Release 9)，而对于今后的 LTE-Advance，其版本号就为 R10 (Release 10)。 LTE中定义了如下三种下行物理控制信道：物理下行控制格式指示信道（Physical Control Format Indicator Channel,简称为 PCFICH);物理混合自动重传请求指示信道（Physical Hybrid Automatic Retransmission Request Indicator Channel,简称为 PHICH);物理下行控制信道（Physical Downlink Control Channel，简称为 PDCCH )。其中， PCFICH承载的信息用于指示在一个子帧里传输 PDCCH的正交频分复用 (Orthogonal Frequency Division Multiplexing, 简称为 OFDM)符号的数目，在子帧的第一个 OFDM符号上发送，所在频率位置由***下行带宽与小区标识（Identity, 简称为 ID) 确定。 The version number of LTE corresponds to R8 (Release 8), and the version number corresponding to the added version is R9 (Release 9), and for future LTE-Advance, the version number is R10 (Release 10). The following three types of downlink physical control channels are defined in LTE: Physical Control Format Indicator Channel (PCFICH); Physical Hybrid Automatic Retransmission Request Indicator Channel (PHICH) ); physical downlink control channel (Physical Downlink Control Channel, PDCCH for short). The information carried by the PCFICH is used to indicate the number of Orthogonal Frequency Division Multiplexing (OFDM) symbols of the PDCCH transmitted in one subframe, and is sent on the first OFDM symbol of the subframe. The frequency location is determined by the system downlink bandwidth and the cell identity (ID).

PHICH用于承载上行传输数据的肯定应答 /否定应答（ACK/NACK) 反馈信息。 PHICH 的数目、时频位置可由 PHICH 所在的下行载波的物理广播信道（Physical Broadcast Channel, 简称为 PBCH) 中的***消息和小区 ID确定。 PDCCH用于承载下行控制信息（Downlink Control Information, 简称为 DCI)，包括：上、下行调度信息，以及上行功率控制信息。 DCI 的格式（DCI format) 分为以下几种： DCI format 0、 DCI format 1、 DCI format 1A、 DCI format 1B、 DCI format 1C、 DCI format ID、 DCI format 2、 DCI format 2A、DCI format 2B、DCI format 2C、DCI format 3和 DCI format 3 A等；其中： The PHICH is used to carry acknowledgement/negative acknowledgement (ACK/NACK) feedback information for uplink transmission data. The number of PHICHs and the time-frequency position can be determined by the system message and the cell ID in the Physical Broadcast Channel (PBCH) of the downlink carrier where the PHICH is located. The PDCCH is used to carry downlink control information (Downlink Control Information, DCI for short), and includes: uplink and downlink scheduling information, and uplink power control information. The DCI format (DCI format) is divided into the following types: DCI format 0, DCI format 1, DCI format 1A, DCI format 1B, DCI format 1C, DCI format ID, DCI format 2, DCI format 2A, DCI format 2B, DCI Format 2C, DCI format 3 and DCI format 3 A; etc.;

DCI format 0用于指示物理上行共享信道（Physical Uplink Shared Channel, 简称为 PUSCH) 的调度； The DCI format 0 is used to indicate the scheduling of the Physical Uplink Shared Channel (PUSCH);

DCI format 1、 DCI format 1A、 DCI format 1B、 DCI format 1C、 DCI format ID用于一个 PDSCH码字调度的不同模式； DCI format 1, DCI format 1A, DCI format 1B, DCI format 1C, DCI format ID are used in different modes of PDSCH codeword scheduling;

DCI format 2、 DCI format 2A、 DCI format 2B、 DCI format 2C用于空分复用的不同模式; DCI format 2, DCI format 2A, DCI format 2B, DCI format 2C are used for different modes of space division multiplexing;

DCI format 3、 DCI format 3A用于物理上行控制信道（Physical Uplink Control Channel, 简称为 PUCCH) 和 PUSCH的功率控制指令的不同模式。步地，其中， DCI Format 1 A传输的信息域如下: DCI format 3, DCI format 3A is used for different modes of the power control command of the physical uplink control channel (Physical Uplink Control Channel, abbreviated as PUCCH) and PUSCH. Step by step, where the information field transmitted by DCI Format 1 A is as follows:

1比特用于选择 DCI Format 0 或 DCI Format 1A; 1 bit is used to select DCI Format 0 or DCI Format 1A;

1 比特用于选择集中式虚拟资源块（Localized Virtual Resource Block, 简称为 LVRB) 或分布式虚拟资源块（Distributed Virtual Resource Block, 简称为 DVRB) 的资源分配方式；

比特用于资源块分配（Resource Block Assignment),其中， V««表示下行的带宽，用资源块（Resource Block, 简称为 RB) 的数量来表示。 1 bit is used to select a resource allocation mode of a localized virtual resource block (LVRB) or a distributed virtual resource block (DVRB);

The bit is used for Resource Block Assignment, where V«« indicates the downlink bandwidth and is represented by the number of Resource Blocks (RBs).

5比特用于指示调制编码方式（Modulation and Coding Scheme, 简称为 MCS); 5 bits are used to indicate the Modulation and Coding Scheme (MCS);

FDD***中， 3比特用于混合自动重传请求（Hybrid Automatic Repeat-reQuest, 简称为 HARQ) 进程数； TDD***中， 4比特用于 HARQ进程数。 In the FDD system, 3 bits are used for the number of Hybrid Automatic Repeat-reQuest (HQQ) processes; in the TDD system, 4 bits are used for the number of HARQ processes.

1比特用于新数据指示（New Data Indicator, 简称为 NDI); 2比特用于指示冗余版本（RV); 2比特用于物理上行控制信道 PUCCH的传输功率控制（Transmit Power Control, 简称为 TPC); 1 bit is used for New Data Indicator (NDI); 2 bits are used to indicate redundancy version (RV); 2 bits are used for the transmission power control (Transmit Power Control, TPC for short) of the physical uplink control channel PUCCH;

2 比特用于下行分配索引（DAI)，此功能只在 TDD***的上下行配置需要，在 FDD***中不需要； 16比特用于循环冗余校验（Cyclic Redundancy Check, 简称为 CRC); 物理下行控制信道 PDCCH 传输的物理资源以控制信道元素（Control Channel Element,简称为 CCE)为单位，一个 CCE的大小为 9个资源元素组（Resource Element Group, 简称为 REG)、即 36个资源元素（Resource Element), —个 PDCCH可能占用 1、 2、 4或者 8个 CCE。对于占用 1、 2、 4、 8个 CCE的这四种 PDCCH大小，采用树状的聚合（Aggregration), 即占用 1个 CCE的 PDCCH可以从任意 CCE位置开始；占用 2个 CCE的 PDCCH从偶数 CCE位置开始；占用 4个 CCE的 PDCCH从 4的整数倍的 CCE位置开始；占用 8个 CCE的 PDCCH从 8的整数倍的 CCE位置开始。每个聚合级别（Aggregration level) 定义一个搜索空间（Search space), 包括公共 (common)的搜索空间和用户设备（User Equipment, 简称为 UE)专有（UE- Specific) 的搜索空间。整个搜索空间的 CCE数目由每个下行子帧中 PCFICH指示的控制区所占用的 OFDM符号数和 PHICH的组数确定。 UE在搜索空间内按所处传输模式的 DCI format对所有的可能的 PDCCH码率进行盲检测。 2 bits are used for the downlink allocation index (DAI). This function is only required for the uplink and downlink configuration of the TDD system, and is not required in the FDD system; 16 bits are used for Cyclic Redundancy Check (CRC); The physical resources of the downlink control channel PDCCH are transmitted in units of Control Channel Elements (CCEs). The size of one CCE is 9 Resource Element Groups (REGs), that is, 36 resource elements. Resource Element), one PDCCH may occupy 1, 2, 4 or 8 CCEs. For the four PDCCH sizes occupying 1, 2, 4, and 8 CCEs, a tree-like aggregation (Aggregation) is adopted, that is, a PDCCH occupying one CCE can start from an arbitrary CCE position; a PDCCH occupying two CCEs from an even CCE The position starts; the PDCCH occupying 4 CCEs starts from the CCE position which is an integer multiple of 4; the PDCCH occupying 8 CCEs starts from the CCE position which is an integral multiple of 8. Each aggregation level (Aggregration level) defines a search space, including a common search space and a user equipment (User Equipment, UE for short) (UE-specific) search space. The number of CCEs in the entire search space is determined by the number of OFDM symbols occupied by the control region indicated by the PCFICH in each downlink subframe and the number of groups of PHICH. The UE blindly detects all possible PDCCH code rates in the search space according to the DCI format of the transmission mode.

UE 通过高层信令半静态（semi-statically) 的被设置为基于以下的一种传输模式 (transmission mode), 按照用户设备专有（UE-Specific) 的搜索空间的 PDCCH的指示来接收 PDSCH数据传输：模式 1 : 单天线端口；端口 0 ( Single-antenna port; port O) 模式 2: 发射分集（Transmit diversity) 模式 3 : 开环空间复用 (Open-loop spatial multiplexing) 模式 4: 闭环空间复用（Closed-loop spatial multiplexing) 模式 5: 多用户多输入多输出（Multi-user MIMO) 模式 6: 闭环 Rank=l预编码（Closed-loop Rank=l precoding) 模式 7: 单天线端口；端口 5 ( Single-antenna port; port 5 ) 如果 UE被高层设置为用小区无线网络临时标识（Cell Radio Network Temporary Identifier, 简称为 C-RNTI) 加扰的循环冗余校验（Cyclical Redundancy Check, 简称为 CRC)来进行 PDCCH解码，则 UE应当按照表 1中定义的相应组合来解码 PDCCH 和所有相关的 PDSCH: 表 1下行传输模式、 DCI格式、搜索空间和传输方案的对应关系表 The UE is semi-statically set by the higher layer signaling to receive the PDSCH data transmission according to the indication of the PDCCH of the user equipment specific (UE-Specific) search space based on one of the following transmission modes. : Mode 1: Single-antenna port; Port 0 Mode 2: Transmit diversity Mode 3: Open-loop spatial multiplexing Mode 4: Closed-loop spatial multiplexing (Closed-loop spatial multiplexing) Mode 5: Multi-user MIMO Mode 6: Closed-loop Rank=l precoding Mode 7: Single antenna port; Port 5 ( Single-antenna port; port 5 ) If the UE is configured by the upper layer to perform PDCCH decoding using a Cellular Network Temporary Identifier (C-RNTI) scrambled Cyclic Redundancy Check (CRC), the UE should perform PDCCH decoding. The PDCCH and all related PDSCHs are decoded according to the corresponding combinations defined in Table 1: Table 1 Correspondence table of downlink transmission mode, DCI format, search space and transmission scheme

双层传输

Double layer transmission

( dual-layer transmission), 端 (dual-layer transmission), end

DCI format 2B C-RNTI定义的 UE specific 口 7和端口 8(port DCI format 2B C-RNTI defined UE specific port 7 and port 8 (port

7 and 8)；或者单天线端口，端口 7 或者 8 非 MBSFN子帧：如果 PBCH天线端口的数目为 1，用 7 and 8); or single antenna port, port 7 or 8 non-MBSFN subframe: if the number of PBCH antenna ports is 1,

DCI format 1 A Common和 C-RNTI定义的 UE specific 单天线端口，端口 DCI format 1 A common and C-RNTI defined UE specific single antenna port, port

0，否则传输分集。模式 9 MBSFN子帧：单天线端口，端口 7 最多 8层传输（up to 8 layer 0, otherwise transmit diversity. Mode 9 MBSFN subframe: single antenna port, port 7 up to 8 layers of transmission (up to 8 layer

DCI format 2C C-RNTI定义的 UE specific DCI format 2C C-RNTI defined UE specific

transmission), 端口 7-端口 14 如果 UE被高层设置为用小区无线网络临时标识 C-RNTI加扰的循环冗余校验来进行 PDCCH解码，则 UE应当按照表 2中定义的相应组合来解码 PDCCH和所有相关的 PUSCH: 表 2上行传输模式、 DCI格式、搜索空间和传输方案的对应关系表 Transmission), port 7-port 14 If the UE is set by the higher layer to perform PDCCH decoding with the cyclic redundancy check of the cell radio network temporary identification C-RNTI scrambling, the UE shall decode the PDCCH according to the corresponding combination defined in Table 2. And all related PUSCHs: Table 2 Correspondence table of uplink transmission mode, DCI format, search space and transmission scheme

由于 LTE-Advanced网络需要能够接入 LTE用户，所以其操作频带需要覆盖目前 LTE 频带，在这个频段上已经不存在可分配的连续 100MHz 的频谱带宽了，所以 LTE-Advanced 需要解决的一个直接技术是将几个分布在不同频段上的连续分量载频 (频谱）（Component Carrier)采用载波聚集（Carrier Aggregation) 技术聚合起来，形成 LTE-Advanced可以使用的 100MHz带宽。即对于聚集后的频谱，被划分为 n个分量载频（频谱），每个分量载频（频谱）内的频谱是连续的。在 LTE-Advanced的未来版本 Release 11中，由于用户接入的需求增多，原有的物理下行控制信道 PDCCH 资源将不足以满足新的版本需求。同时，在异构网 ( Heterogeneous Networks ) 的场景下，由于不同基站类型都有较强的干扰，宏基站 (Macro eNodeB ) 对微基站（Pico ) 的干扰问题和家庭基站（Home eNodeB ) 对宏基站（Macro eNodeB ) 干扰问题需要得到很好的解决。那么，降低 PDCCH的负载将是用于解决上述问题的有效方案。目前，对于降低 PDCCH的负载需要的传输模式设计方案还没有确定，从而给实际应用带来不便。发明内容本发明实施例提供了一种传输方法及装置，以至少解决相关技术中还没有确定降低 PDCCH的负载需要的传输模式设计方案的问题。为了实现上述目的，根据本发明的一个实施例，提供了一种传输方法。根据本发明实施例的传输方法包括：设置传输模式 X；通过传输模式 X对应的下行控制信息格式向用户设备发送下行控制信息，其中下行控制信息格式包括以下至少之一：下行控制信息格式 1A、下行控制信息格式 0、下行控制信息格式 Yl、下行控制信息格式 Υ2。优选地，在传输模式 X是下行传输模式的情况下，在传输模式 X下的下行控制信息中，当下行控制信道中的循环校验码采用小区无线网络临时标识 C-RNTI加扰时，设置传输模式 X包括：在公共搜索空间和 C-RNTI定义的用户设备专有搜索空间中，采用下行控制信息格式 1A表示单天线端口或者传输分集的传输方式；或者，在公共搜索空间中，采用下行控制信息格式 1A表示单天线端口或者传输分集的传输方式，在 C-RNTI定义的用户设备专有搜索空间中，采用下行控制信息格式 Y1表示单天线端口或者传输分集的传输方式；或者，在公共搜索空间和 C-RNTI定义的用户设备专有搜索空间中，采用下行控制信息格式 1A表示单天线端口或者传输分集的传输方式，在 C-RNTI定义的用户设备专有搜索空间中，采用下行控制信息格式 Y1表示单天线端口或者传输分集的传输方式。优选地，在传输模式 X是上行传输模式的情况下，在传输模式 X下的下行控制信息中，当下行控制信道中的循环校验码采用 C-RNTI加扰时，设置传输模式 X包括：在公共搜索空间和 C-RNTI定义的用户设备专有搜索空间中，采用下行控制信息格式 0 表示单天线端口的传输方式，在 C-RNTI定义的用户设备专有搜索空间中，采用下行控制信息格式 Υ2表示闭环空间复用单层传输方式；或者，在公共搜索空间中，采用下行控制信息格式 0表示单天线端口的传输方式，在 C-RNTI定义的用户设备专有搜索空间中，采用下行控制信息格式 Y2表示闭环空间复用单层传输方式；或者，在公共搜索空间中，采用下行控制信息格式 0表示单天线端口的传输方式，在 C-RNTI定义的用户设备专有搜索空间中，采用下行控制信息格式 Y2表示单天线端口的传输方式。优选地，下行控制信息格式 Y1的信息域包括以下至少之一或组合：载波指示域、区分 DCI format 1A和 0的比特域、集中和分布式虚拟资源分配选择比特、资源块分配、调制编码方式、 HARQ进程数、新数据指示、冗余版本、物理上行控制信道的传输功率控制、下行分配索引、信道探测参考信号请求；下行控制信息格式 Y2 的信息域包括以下至少之一或组合：载波指示域、区分 DCI format 1A和 0的比特域、调频选择比特、资源块分配、调制编码方式和冗余版本、新数据指示、冗余版本、物理上行共享信道的传输功率控制、专有解调参考信号、正交序列索引的循环移位、上行索弓 I、下行分配索引、信道状态信息请求、信道探测参考信号请求、资源分配类型。优选地，在传输模式 X是下行传输模式的情况下，在传输模式 X下的下行控制信息中，当下行控制信道中的循环校验码采用小区无线网络临时标识 C-RNTI加扰时，设置传输模式 X包括：在公共搜索空间和 C-RNTI定义的用户设备专有搜索空间中，采用下行控制信息格式 1A表示单天线端口或者传输分集的传输方式，在 C-RNTI定义的用户设备专有搜索空间中，采用下行控制信息格式 Y1 表示多层传输的传输方式；或者，在公共搜索空间中，采用下行控制信息格式 1 A表示单天线端口或者传输分集的传输方式，在 C-RNTI定义的用户设备专有搜索空间中，采用下行控制信息格式 Y1 表示多层传输的传输方式。优选地，在传输模式 X是上行传输模式的情况下，在传输模式 X下的下行控制信息中，当下行控制信道中的循环校验码采用 C-RNTI加扰时，设置传输模式 X包括：在公共搜索空间和 C-RNTI定义的用户设备专有搜索空间中，采用下行控制信息格式 0 表示单天线端口的传输方式，在 C-RNTI定义的用户设备专有搜索空间中，采用下行控制信息格式 Y2表示闭环空间复用的传输方式；或者，在公共搜索空间中，采用下行控制信息格式 0表示单天线端口的传输方式，在 C-RNTI定义的用户设备专有搜索空间中，采用下行控制信息格式 Y2表示闭环空间复用的传输方式。优选地，下行控制信息格式 Y1的信息域包括以下至少之一或组合：载波指示域、资源分配头、资源块分配、物理上行控制信道的传输功率控制、下行分配索引、 HARQ 进程数、天线端口扰码身份和层数、信道探测参考信号请求、传输块一的调制编码方式、传输块一新数据指示、传输块一的冗余版本、传输块二的调制编码方式、传输块二的新数据指示、传输块二的冗余版本；下行控制信息格式 Y2 的信息域包括以下至少之一或组合：载波指示域、资源块分配、物理上行共享信道的传输功率控制、专有解调参考信号、正交序列索引的循环移位、上行索引、下行分配索引、信道状态信息请求、信道探测参考信号请求、资源分配类型、预编码信息和层数信息、传输块一的调制编码方式、传输块一的新数据指示、传输块一的冗余版本、传输块二的调制编码方式、传输块二的新数据指示、传输块二的冗余版本。优选地，在传输模式 X是下行传输模式的情况下，在传输模式 X下的下行控制信息中，当下行控制信道中的循环校验码采用小区无线网络临时标识 C-RNTI加扰时，设置传输模式 X包括：在公共搜索空间和 C-RNTI定义的用户设备专有搜索空间中，采用下行控制信息格式 1A表示单天线端口或者传输分集的传输方式，其中，端口号为端口 0，在 C-RNTI定义的用户设备专有搜索空间中，采用下行控制信息格式 Y1表示单天线端口的传输方式，端口号为端口 7和 8中任意一个，或者为端口 7、 8、 9和 10中任意一个，或者固定为端口 7; 或者，在公共搜索空间中，采用下行控制信息格式 1A表示单天线端口或者传输分集的传输方式，其中，端口号为端口 0，在 C-RNTI 定义的用户设备专有搜索空间中，采用下行控制信息格式 Y1 表示单天线端口的传输方式，其中，端口号为端口 7和 8中任意一个，或者为端口 7、 8、 9和 10中任意一个，或者固定为端口 7; 或者，在公共搜索空间中，采用下行控制信息格式 1 A表示单天线端口或者传输分集的传输方式，其中，端口号为端口 0，在 C-RNTI定义的用户设备专有搜索空间中，采用下行控制信息格式 Y1表示单天线端口或者传输分集的传输方式，其中，端口号为端口 7和 8中任意一个，或者为端口 7、 8、 9和 10中任意一个，或者固定为端口 7。优选地，下行控制信息格式 Y1的信息域包括以下至少之一或组合：载波指示域、资源分配头、资源块分配、物理上行控制信道的传输功率控制、下行分配索引、 HARQ 进程数、天线端口扰码身份和层数、信道探测参考信号请求、传输块一的调制编码方式和 /或新数据指示和 /或冗余版本；或者，下行控制信息格式 Y1的信息域包括以下至少之一或组合：载波指示域、资源分配头、资源块分配、调制编码方式、 HARQ进程数、新数据指示、冗余版本、物理上行控制信道的传输功率控制、下行分配索引。优选地，下行控制信息格式 Y1的负载与下行控制信息格式 Y2的负载相同。优选地，当下行控制信息格式 Y1的负载与下行控制信息格式 Y2的负载相同时，下行控制信息格式 Y1的信息域包含区分下行控制信息格式 Y1和 Y2的比特和添加比特，下行控制信息格式 Y2的信息域包含区分下行控制信息格式 Y1和 Y2的比特和添加比特。优选地，在下行控制信息格式 Y1或者下行控制信息格式 Y2中，采用的资源分配比特包括以下至少之一：资源分配比特是 ceil ( log2 ( DD ) +X比特，其中 NDL是下行带宽对应的物理资源块数， ceil ( log2 (NDD ) 是资源块的起始位置， X 比特是资源块的数量， X取值为 1或 2或 3 ; 只采用连续资源分配的方法；采用连续资源分配的方法时，采用资源粒子组代替物理资源块作为最小单位进行表示，分配的资源块数量为资源组包含的资源块数量的倍数；采用非连续资源分配方法时，扩大资源块组大小 P的值。优选地，在下行控制信息格式 Y1或者 Y2中，调制编码方式比特数为 2、 3、 4或者 5。为了实现上述目的，根据本发明的另一个实施例，提供了一种传输装置。根据本发明实施例的传输装置包括：设置模块，设置为设置传输模式 X；发送模块，设置为通过传输模式 X对应的下行控制信息格式向用户设备发送下行控制信息，其中下行控制信息格式包括以下至少之一：下行控制信息格式 1A、下行控制信息格式 0、下行控制信息格式 Yl、下行控制信息格式 Υ2。本发明实施例提供了一种传输模式设计方案，通过这种传输模式的设计以及与其相应的 PDCCH负载的降低，可以提升 PDCCH的容量以及降低 PDCCH的阻塞率，方便实际应用。附图说明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：图 1是根据相关技术的 FDD模式的帧结构示意图；图 2是根据相关技术的 TDD模式的帧结构示意图；图 3是根据本发明实施例的传输方法的流程图；图 4是根据本发明实施例的传输装置的结构框图。具体实施方式需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。下面将参考附图并结合实施例来详细说明本发明。本发明实施例提供了一种传输方法。图 3是根据本发明实施例的传输方法的流程图，如图 3所示，包括如下的步骤 S302至步骤 S304。步骤 S302，设置传输模式 X。步骤 S304,通过传输模式 X对应的下行控制信息格式向用户设备发送下行控制信息，其中下行控制信息格式包括以下至少之一：下行控制信息格式 1A、下行控制信息格式 0、下行控制信息格式 Yl、下行控制信息格式 Υ2。相关技术中，还没有确定降低 PDCCH的负载需要的传输模式设计方案。本发明实施例中提供了这样一种传输模式设计方案，通过这种传输模式的设计以及与其相应的 PDCCH负载的降低，可以提升 PDCCH的容量以及降低 PDCCH的阻塞率，方便实际应用。为了更加清楚的描述上述传输模式设计方案，本发明分别提供了五组详细方案及其使用方法，下面分别对其进行描述。第一组在传输模式 X是下行传输模式的情况下，在传输模式 X下的下行控制信息中，当下行控制信道中的循环校验码采用小区无线网络临时标识 C-RNTI加扰时，设置传输模式 X包括：在公共搜索空间和 C-RNTI定义的用户设备专有搜索空间中，采用下行控制信息格式 1A表示单天线端口或者传输分集的传输方式；或者，在公共搜索空间中，采用下行控制信息格式 1A表示单天线端口或者传输分集的传输方式，在 C-RNTI 定义的用户设备专有搜索空间中，采用下行控制信息格式 Y1 表示单天线端口或者传输分集的传输方式；或者，在公共搜索空间和 C-RNTI定义的用户设备专有搜索空间中，采用下行控制信息格式 1A表示单天线端口或者传输分集的传输方式，在 C-RNTI 定义的用户设备专有搜索空间中，采用下行控制信息格式 Y1 表示单天线端口或者传输分集的传输方式。在传输模式 X是上行传输模式的情况下，在传输模式 X下的下行控制信息中，当下行控制信道中的循环校验码采用 C-RNTI加扰时，设置传输模式 X包括：在公共搜索空间和 C-RNTI定义的用户设备专有搜索空间中，采用下行控制信息格式 0表示单天线端口的传输方式，在 C-RNTI定义的用户设备专有搜索空间中，采用下行控制信息格式 Y2表示闭环空间复用单层传输方式；或者，在公共搜索空间中，采用下行控制信息格式 0表示单天线端口的传输方式，在 C-RNTI定义的用户设备专有搜索空间中，采用下行控制信息格式 Y2表示闭环空间复用单层传输方式；或者，在公共搜索空间中，采用下行控制信息格式 0表示单天线端口的传输方式，在 C-RNTI定义的用户设备专有搜索空间中，采用下行控制信息格式 Y2表示单天线端口的传输方式。优选地，下行控制信息格式 Y1的信息域包括以下至少之一或组合：载波指示域、区分 DCI format 1A和 0的比特域、集中和分布式虚拟资源分配选择比特、资源块分配、调制编码方式、 HARQ进程数、新数据指示、冗余版本、物理上行控制信道的传输功率控制、下行分配索引、信道探测参考信号请求；下行控制信息格式 Y2 的信息域包括以下至少之一或组合：载波指示域、区分 DCI format 1A和 0的比特域、调频选择比特、资源块分配、调制编码方式和冗余版本、新数据指示、冗余版本、物理上行共享信道的传输功率控制、专有解调参考信号、正交序列索引的循环移位、上行索弓 I、下行分配索引、信道状态信息请求、信道探测参考信号请求、资源分配类型。第二组在传输模式 X是下行传输模式的情况下，在传输模式 X下的下行控制信息中，当下行控制信道中的循环校验码采用小区无线网络临时标识 C-RNTI加扰时，设置传输模式 X包括：在公共搜索空间和 C-RNTI定义的用户设备专有搜索空间中，采用下行控制信息格式 1A表示单天线端口或者传输分集的传输方式，在 C-RNTI定义的用户设备专有搜索空间中，采用下行控制信息格式 Y1 表示多层传输的传输方式；或者，在公共搜索空间中，采用下行控制信息格式 1A表示单天线端口或者传输分集的传输方式，在 C-RNTI定义的用户设备专有搜索空间中，采用下行控制信息格式 Y1表示多层传输的传输方式。在传输模式 X是上行传输模式的情况下，在传输模式 X下的下行控制信息中，当下行控制信道中的循环校验码采用 C-RNTI加扰时，设置传输模式 X包括：在公共搜索空间和 C-RNTI定义的用户设备专有搜索空间中，采用下行控制信息格式 0表示单天线端口的传输方式，在 C-RNTI定义的用户设备专有搜索空间中，采用下行控制信息格式 Y2表示闭环空间复用的传输方式；或者，在公共搜索空间中，采用下行控制信息格式 0表示单天线端口的传输方式，在 C-RNTI定义的用户设备专有搜索空间中，采用下行控制信息格式 Y2表示闭环空间复用的传输方式。优选地，下行控制信息格式 Y1的信息域包括以下至少之一或组合：载波指示域、资源分配头、资源块分配、物理上行控制信道的传输功率控制、下行分配索引、 HARQ 进程数、天线端口扰码身份和层数、信道探测参考信号请求、传输块一的调制编码方式、传输块一新数据指示、传输块一的冗余版本、传输块二的调制编码方式、传输块二的新数据指示、传输块二的冗余版本；下行控制信息格式 Y2 的信息域包括以下至少之一或组合：载波指示域、资源块分配、物理上行共享信道的传输功率控制、专有解调参考信号、正交序列索引的循环移位、上行索引、下行分配索引、信道状态信息请求、信道探测参考信号请求、资源分配类型、预编码信息和层数信息、传输块一的调制编码方式、传输块一的新数据指示、传输块一的冗余版本、传输块二的调制编码方式、传输块二的新数据指示、传输块二的冗余版本。第三组在传输模式 X是下行传输模式的情况下，在传输模式 X下的下行控制信息中，当下行控制信道中的循环校验码采用小区无线网络临时标识 C-RNTI加扰时，设置传输模式 X包括：在公共搜索空间和 C-RNTI定义的用户设备专有搜索空间中，采用下行控制信息格式 1A表示单天线端口或者传输分集的传输方式，其中，端口号为端口 0，在 C-RNTI定义的用户设备专有搜索空间中，采用下行控制信息格式 Y1表示单天线端口的传输方式，端口号为端口 7和 8中任意一个，或者为端口 7、 8、 9和 10中任意一个，或者固定为端口 7; 或者，在公共搜索空间中，采用下行控制信息格式 1 A表示单天线端口或者传输分集的传输方式，其中，端口号为端口 0，在 C-RNTI定义的用户设备专有搜索空间中，采用下行控制信息格式 Y1 表示单天线端口的传输方式，其中，端口号为端口 7和 8中任意一个，或者为端口 7、 8、 9和 10中任意一个，或者固定为端口 7; 或者，在公共搜索空间中，采用下行控制信息格式 1A表示单天线端口或者传输分集的传输方式，其中，端口号为端口 0，在 C-RNTI定义的用户设备专有搜索空间中，采用下行控制信息格式 Y1 表示单天线端口或者传输分集的传输方式，其中，端口号为端口 7和 8中任意一个，或者为端口 7、 8、 9和 10中任意一个，或者固定为端 Π 7。优选地，下行控制信息格式 Y1的信息域包括以下至少之一或组合：载波指示域、资源分配头、资源块分配、物理上行控制信道的传输功率控制、下行分配索引、 HARQ 进程数、天线端口扰码身份和层数、信道探测参考信号请求、传输块一的调制编码方式和 /或新数据指示和 /或冗余版本；或者，下行控制信息格式 Y1的信息域包括以下至少之一或组合：载波指示域、资源分配头、资源块分配、调制编码方式、 HARQ进程数、新数据指示、冗余版本、物理上行控制信道的传输功率控制、下行分配索引。优选地，下行控制信息格式 Y1的负载与下行控制信息格式 Y2的负载相同。优选地，当下行控制信息格式 Y1的负载与下行控制信息格式 Y2的负载相同时，下行控制信息格式 Y1的信息域包含区分下行控制信息格式 Y1和 Y2的比特和添加比特，下行控制信息格式 Y2的信息域包含区分下行控制信息格式 Y1和 Y2的比特和添加比特。优选地，在下行控制信息格式 Y1或者下行控制信息格式 Y2中，采用的资源分配比特包括以下至少之一：资源分配比特是 ceil ( log2 ( DD ) +X比特，其中 NDL是下行带宽对应的物理资源块数， ceil ( log2 (NDD ) 是资源块的起始位置， X 比特是资源块的数量， X取值为 1或 2或 3 ; 只采用连续资源分配的方法；采用连续资源分配的方法时，采用资源粒子组代替物理资源块作为最小单位进行表示，分配的资源块数量为资源组包含的资源块数量的倍数；采用非连续资源分配方法时，扩大资源块组大小 P的值。优选地，在下行控制信息格式 Y1或者 Y2中，调制编码方式比特数为 2、 3、 4或者 5。下面将结合实例对本发明实施例的实现过程进行详细描述。实施例一当传输模式 X为下行传输模式，在传输模式 X下的下行控制信息中，当下行控制信道中的循环校验码采用小区无线网络临时标识加扰时：在公共搜索空间和小区无线网络临时标识 C-RNTI定义的用户设备专有搜索空间中，采用下行控制信息格式 DCI Format 1A表示单天线端口或者传输分集的传输方式；在 C-RNTI定义的用户设备专有搜索空间中，采用下行控制信息格式 Y1表示传输分集的传输方式。如表 3所示：表 3 下行传输模式、 DCI格式、搜索空间和传输方案的对应关系表 Since the LTE-Advanced network needs to be able to access LTE users, its operating band needs to cover the current LTE frequency band. There is no allocated 100 MHz spectrum bandwidth allocated in this frequency band. Therefore, a direct technology that LTE-Advanced needs to solve is Several component carriers (component carriers) distributed over different frequency bands are aggregated using Carrier Aggregation technology to form a 100 MHz bandwidth that can be used by LTE-Advanced. That is, for the aggregated spectrum, it is divided into n component carrier frequencies (spectrums), and the spectrum in each component carrier frequency (spectrum) is continuous. In the future release of Release 11 of LTE-Advanced, due to the increased demand for user access, the original physical downlink control channel PDCCH resources will not be sufficient to meet the new version requirements. At the same time, in heterogeneous networks In the scenario of Heterogeneous Networks, the interference problem of the macro base station (Macro eNodeB) to the micro base station (Pico) and the interference of the home eNodeB to the macro base station (Macro eNodeB) due to strong interference of different base station types Need to be well resolved. Then, reducing the load of the PDCCH will be an effective solution for solving the above problem. At present, the transmission mode design scheme for reducing the load of the PDCCH has not been determined, thereby causing inconvenience to practical applications. SUMMARY OF THE INVENTION The embodiments of the present invention provide a transmission method and apparatus to solve at least the problem of a transmission mode design scheme that has not been determined in the related art to reduce the load requirement of a PDCCH. In order to achieve the above object, according to an embodiment of the present invention, a transmission method is provided. The transmission method according to the embodiment of the present invention includes: setting a transmission mode X; transmitting downlink control information to a user equipment by using a downlink control information format corresponding to the transmission mode X, where the downlink control information format includes at least one of the following: a downlink control information format 1A, The downlink control information format 0, the downlink control information format Y1, and the downlink control information format Υ2. Preferably, in the case that the transmission mode X is the downlink transmission mode, in the downlink control information in the transmission mode X, when the cyclic check code in the downlink control channel is scrambled by the cell radio network temporary identifier C-RNTI, The transmission mode X includes: in the public search space and the user equipment-specific search space defined by the C-RNTI, the downlink control information format 1A is used to indicate the transmission mode of the single antenna port or the transmission diversity; or, in the common search space, the downlink is adopted. The control information format 1A indicates the transmission mode of the single antenna port or the transmission diversity. In the user equipment-specific search space defined by the C-RNTI, the downlink control information format Y1 is used to indicate the transmission mode of the single antenna port or the transmission diversity; or, in the public In the user equipment-specific search space defined by the search space and the C-RNTI, the downlink control information format 1A is used to indicate the transmission mode of the single antenna port or the transmission diversity, and the downlink control is adopted in the user equipment-specific search space defined by the C-RNTI. The information format Y1 indicates the transmission mode of a single antenna port or transmission diversity. Preferably, in the case that the transmission mode X is the uplink transmission mode, in the downlink control information in the transmission mode X, when the cyclic check code in the downlink control channel is scrambled by C-RNTI, setting the transmission mode X includes: In the public search space and the user equipment-specific search space defined by the C-RNTI, the downlink control information format 0 is used to indicate the transmission mode of the single antenna port, and the downlink control information is used in the user equipment-specific search space defined by the C-RNTI. The format Υ2 indicates the closed-loop spatial multiplexing single-layer transmission mode; or, in the common search space, the downlink control information format 0 indicates the transmission mode of the single-antenna port, and the user equipment-defined search defined in the C-RNTI In the cable space, the downlink control information format Y2 is used to indicate the closed-loop spatial multiplexing single-layer transmission mode; or, in the common search space, the downlink control information format 0 is used to indicate the transmission mode of the single-antenna port, and the user equipment defined in the C-RNTI In the proprietary search space, the downlink control information format Y2 is used to indicate the transmission mode of the single antenna port. Preferably, the information domain of the downlink control information format Y1 includes at least one or a combination of: a carrier indication domain, a bit field that distinguishes DCI formats 1A and 0, a centralized and distributed virtual resource allocation selection bit, a resource block allocation, and a modulation and coding manner. The number of HARQ processes, the new data indication, the redundancy version, the transmission power control of the physical uplink control channel, the downlink allocation index, and the channel sounding reference signal request. The information domain of the downlink control information format Y2 includes at least one or a combination of the following: Domain, bit field of DCI format 1A and 0, FM selection bit, resource block allocation, modulation and coding mode and redundancy version, new data indication, redundancy version, transmission power control of physical uplink shared channel, proprietary demodulation reference Signal, cyclic shift of orthogonal sequence index, uplink cable I, downlink allocation index, channel state information request, channel sounding reference signal request, resource allocation type. Preferably, in the case that the transmission mode X is the downlink transmission mode, in the downlink control information in the transmission mode X, when the cyclic check code in the downlink control channel is scrambled by the cell radio network temporary identifier C-RNTI, The transmission mode X includes: in the common search space and the user equipment-specific search space defined by the C-RNTI, the downlink control information format 1A is used to indicate the transmission mode of the single antenna port or the transmission diversity, and the user equipment defined in the C-RNTI is exclusive. In the search space, the downlink control information format Y1 is used to indicate the transmission mode of the multi-layer transmission; or, in the common search space, the downlink control information format 1 A is used to indicate the transmission mode of the single antenna port or the transmission diversity, which is defined in the C-RNTI. In the user equipment-specific search space, the downlink control information format Y1 is used to indicate the transmission mode of the multi-layer transmission. Preferably, in the case that the transmission mode X is the uplink transmission mode, in the downlink control information in the transmission mode X, when the cyclic check code in the downlink control channel is scrambled by C-RNTI, setting the transmission mode X includes: In the public search space and the user equipment-specific search space defined by the C-RNTI, the downlink control information format 0 is used to indicate the transmission mode of the single antenna port, and the downlink control information is used in the user equipment-specific search space defined by the C-RNTI. The format Y2 indicates the transmission mode of the closed-loop spatial multiplexing; or, in the common search space, the downlink control information format 0 indicates the transmission mode of the single antenna port, and the downlink control is adopted in the user equipment-specific search space defined by the C-RNTI. The information format Y2 represents the transmission mode of closed-loop spatial multiplexing. Preferably, the information domain of the downlink control information format Y1 includes at least one or a combination of: a carrier indication domain, a resource allocation header, a resource block allocation, a transmission power control of a physical uplink control channel, a downlink allocation index, a HARQ process number, and an antenna port. Scrambling code identity and layer number, channel sounding reference signal request, modulation block coding mode of transport block 1, new data indication of transport block, redundancy version of transport block one, modulation and coding mode of transport block 2, new data of transport block 2 Indicates the redundancy version of transport block 2; the information field of downlink control information format Y2 includes the following One less or combination: carrier indication domain, resource block allocation, transmission power control of physical uplink shared channel, proprietary demodulation reference signal, cyclic shift of orthogonal sequence index, uplink index, downlink allocation index, channel state information request Channel sounding reference signal request, resource allocation type, precoding information and layer number information, modulation and coding mode of transport block one, new data indication of transport block one, redundancy version of transport block one, modulation and coding mode of transport block two , the new data indication of transport block 2, the redundant version of transport block 2. Preferably, in the case that the transmission mode X is the downlink transmission mode, in the downlink control information in the transmission mode X, when the cyclic check code in the downlink control channel is scrambled by the cell radio network temporary identifier C-RNTI, The transmission mode X includes: in the common search space and the user equipment-specific search space defined by the C-RNTI, the downlink control information format 1A is used to indicate the transmission mode of the single antenna port or the transmission diversity, where the port number is port 0, in the C - In the user equipment-specific search space defined by the RNTI, the downlink control information format Y1 is used to indicate the transmission mode of the single antenna port, and the port number is any one of ports 7 and 8, or any one of ports 7, 8, 9, and 10. Or, it is fixed to port 7; or, in the common search space, the downlink control information format 1A is used to indicate the transmission mode of the single antenna port or the transmission diversity, where the port number is port 0, which is exclusive to the user equipment defined in the C-RNTI. In the search space, the downlink control information format Y1 is used to indicate the transmission mode of the single antenna port, where the port number is port 7. Any one of 8 and 8, or any one of ports 7, 8, 9 and 10, or fixed to port 7; or, in the common search space, the downlink control information format 1 A indicates the transmission of a single antenna port or transmission diversity The port number is port 0. In the user equipment-specific search space defined by the C-RNTI, the downlink control information format Y1 is used to indicate the transmission mode of the single antenna port or the transmission diversity, where the port number is port 7 and 8. Either of them, or any of ports 7, 8, 9, and 10, or fixed to port 7. Preferably, the information domain of the downlink control information format Y1 includes at least one or a combination of: a carrier indication domain, a resource allocation header, a resource block allocation, a transmission power control of a physical uplink control channel, a downlink allocation index, a HARQ process number, and an antenna port. a scrambling code identity and layer number, a channel sounding reference signal request, a modulation coding mode of the transport block one, and/or a new data indication and/or a redundancy version; or, the information field of the downlink control information format Y1 includes at least one or a combination of the following : carrier indication field, resource allocation header, resource block allocation, modulation and coding mode, number of HARQ processes, new data indication, redundancy version, transmission power control of the physical uplink control channel, and downlink allocation index. Preferably, the load of the downlink control information format Y1 is the same as the load of the downlink control information format Y2. Preferably, when the load of the downlink control information format Y1 is the same as the load of the downlink control information format Y2, the information field of the downlink control information format Y1 includes bits and added bits that distinguish the downlink control information formats Y1 and Y2, and the downlink control information format Y2 The information field contains bits and added bits that distinguish the downlink control information formats Y1 and Y2. Preferably, in the downlink control information format Y1 or the downlink control information format Y2, the resource allocation bits used include at least one of the following: The resource allocation bit is ceil (log2 ( DD ) + X bits, where NDL is the physical medium corresponding to the downlink bandwidth The number of resource blocks, ceil ( log2 (NDD ) is the starting position of the resource block, X bits are the number of resource blocks, X is 1 or 2 or 3; only the method of continuous resource allocation; the method of continuous resource allocation When a resource particle group is used instead of a physical resource block as a minimum unit, the number of allocated resource blocks is a multiple of the number of resource blocks included in the resource group. When the discontinuous resource allocation method is used, the value of the resource block group size P is expanded. In the downlink control information format Y1 or Y2, the number of modulation coding mode bits is 2, 3, 4 or 5. To achieve the above object, according to another embodiment of the present invention, a transmission apparatus is provided. The transmission device of the embodiment comprises: a setting module, configured to set a transmission mode X; a sending module, configured to pass the transmission mode The downlink control information format corresponding to the X sends the downlink control information to the user equipment, where the downlink control information format includes at least one of the following: a downlink control information format 1A, a downlink control information format 0, a downlink control information format Y1, and a downlink control information format Υ2. The embodiment of the present invention provides a transmission mode design scheme. The design of the transmission mode and the corresponding PDCCH load reduction can improve the capacity of the PDCCH and reduce the blocking rate of the PDCCH, which is convenient for practical applications. The accompanying drawings are intended to provide a further understanding of the embodiments of the invention 1 is a schematic diagram of a frame structure of an FDD mode according to the related art; FIG. 2 is a schematic diagram of a frame structure of a TDD mode according to the related art; FIG. 3 is a flowchart of a transmission method according to an embodiment of the present invention; A block diagram of the transmission device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. The invention will be described in detail below with reference to the drawings in conjunction with the embodiments. The embodiment of the invention provides a transmission method. FIG. 3 is a flowchart of a transmission method according to an embodiment of the present invention. As shown in FIG. 3, the following steps S302 to S304 are included. Step S302, setting the transmission mode X. Step S304: Send downlink control information to the user equipment by using a downlink control information format corresponding to the transmission mode X, where the downlink control information format includes at least one of the following: a downlink control information format 1A, a downlink control information format 0, and a downlink control information format Y1. The downlink control information format is Υ2. In the related art, a transmission mode design scheme for reducing the load requirement of the PDCCH has not been determined. In the embodiment of the present invention, a transmission mode design scheme is provided. The design of the transmission mode and the corresponding PDCCH load reduction can improve the capacity of the PDCCH and reduce the blocking rate of the PDCCH, which is convenient for practical applications. In order to more clearly describe the above transmission mode design, the present invention provides five sets of detailed schemes and their methods of use, respectively, which are respectively described below. In the case where the transmission mode X is the downlink transmission mode, in the downlink control information in the transmission mode X, when the cyclic check code in the downlink control channel is scrambled by the cell radio network temporary identifier C-RNTI, the first group is set. The transmission mode X includes: in the public search space and the user equipment-specific search space defined by the C-RNTI, the downlink control information format 1A is used to indicate the transmission mode of the single antenna port or the transmission diversity; or, in the common search space, the downlink is adopted. The control information format 1A indicates the transmission mode of the single antenna port or the transmission diversity. In the user equipment-specific search space defined by the C-RNTI, the downlink control information format Y1 is used to indicate the transmission mode of the single antenna port or the transmission diversity; or, in the public In the user equipment-specific search space defined by the search space and the C-RNTI, the downlink control information format 1A is used to indicate the transmission mode of the single antenna port or the transmission diversity, and the downlink control is adopted in the user equipment-specific search space defined by the C-RNTI. The information format Y1 indicates the transmission mode of a single antenna port or transmission diversity. In the case that the transmission mode X is the uplink transmission mode, in the downlink control information in the transmission mode X, when the cyclic check code in the downlink control channel is scrambled by C-RNTI, setting the transmission mode X includes: In the user equipment-specific search space defined by space and C-RNTI, the downlink control information format 0 is used to indicate the single In the user equipment-specific search space defined by the C-RNTI, the downlink control information format Y2 is used to represent the closed-loop spatial multiplexing single-layer transmission mode; or, in the common search space, the downlink control information format is adopted. Indicates the transmission mode of the single-antenna port. In the user equipment-specific search space defined by the C-RNTI, the downlink control information format Y2 is used to indicate the closed-loop spatial multiplexing single-layer transmission mode; or, in the common search space, the downlink control information is used. The format 0 indicates the transmission mode of the single antenna port. In the user equipment-specific search space defined by the C-RNTI, the downlink control information format Y2 is used to indicate the transmission mode of the single antenna port. Preferably, the information domain of the downlink control information format Y1 includes at least one or a combination of: a carrier indication domain, a bit field that distinguishes DCI formats 1A and 0, a centralized and distributed virtual resource allocation selection bit, a resource block allocation, and a modulation and coding manner. The number of HARQ processes, the new data indication, the redundancy version, the transmission power control of the physical uplink control channel, the downlink allocation index, and the channel sounding reference signal request. The information domain of the downlink control information format Y2 includes at least one or a combination of the following: Domain, bit field of DCI format 1A and 0, FM selection bit, resource block allocation, modulation and coding mode and redundancy version, new data indication, redundancy version, transmission power control of physical uplink shared channel, proprietary demodulation reference Signal, cyclic shift of orthogonal sequence index, uplink cable I, downlink allocation index, channel state information request, channel sounding reference signal request, resource allocation type. In the case where the transmission mode X is the downlink transmission mode, in the downlink control information in the transmission mode X, when the cyclic check code in the downlink control channel is scrambled by the cell radio network temporary identifier C-RNTI, The transmission mode X includes: in the common search space and the user equipment-specific search space defined by the C-RNTI, the downlink control information format 1A is used to indicate the transmission mode of the single antenna port or the transmission diversity, and the user equipment defined in the C-RNTI is exclusive. In the search space, the downlink control information format Y1 is used to indicate the transmission mode of the multi-layer transmission; or, in the common search space, the downlink control information format 1A is used to indicate the transmission mode of the single antenna port or the transmission diversity, and the user defined in the C-RNTI In the device-specific search space, the downlink control information format Y1 is used to indicate the transmission mode of the multi-layer transmission. In the case that the transmission mode X is the uplink transmission mode, in the downlink control information in the transmission mode X, when the cyclic check code in the downlink control channel is scrambled by C-RNTI, setting the transmission mode X includes: In the user equipment-specific search space defined by the space and the C-RNTI, the downlink control information format 0 is used to indicate the transmission mode of the single antenna port. In the user equipment-specific search space defined by the C-RNTI, the downlink control information format Y2 is used. The transmission mode of the closed-loop spatial multiplexing; or, in the common search space, the downlink control information format 0 indicates the transmission mode of the single antenna port, and in the user equipment-specific search space defined by the C-RNTI, the downlink control information format Y2 is adopted. Indicates the transmission mode of closed-loop spatial multiplexing. Preferably, the information domain of the downlink control information format Y1 includes at least one or a combination of: a carrier indication domain, a resource allocation header, a resource block allocation, a transmission power control of a physical uplink control channel, a downlink allocation index, a HARQ process number, and an antenna port. Scrambling code identity and layer number, channel sounding reference signal request, modulation block coding mode of transport block 1, new data indication of transport block, redundancy version of transport block one, modulation and coding mode of transport block 2, new data of transport block 2 Instructing, transmitting a redundant version of the second block; the information field of the downlink control information format Y2 includes at least one or a combination of: a carrier indication field, a resource block allocation, a transmission power control of a physical uplink shared channel, a proprietary demodulation reference signal, Cyclic shift of orthogonal sequence index, uplink index, downlink allocation index, channel state information request, channel sounding reference signal request, resource allocation type, precoding information and layer number information, modulation and coding mode of transport block one, transport block one New data indication, redundant version of transport block one, transport block Modulation and coding scheme, two new data transmission block indication, a redundancy version of the two transport blocks. In the case where the transmission mode X is the downlink transmission mode, in the downlink control information in the transmission mode X, when the cyclic check code in the downlink control channel is scrambled by the cell radio network temporary identifier C-RNTI, the third group is set. The transmission mode X includes: in the common search space and the user equipment-specific search space defined by the C-RNTI, the downlink control information format 1A is used to indicate the transmission mode of the single antenna port or the transmission diversity, where the port number is port 0, in the C - In the user equipment-specific search space defined by the RNTI, the downlink control information format Y1 is used to indicate the transmission mode of the single antenna port, and the port number is any one of ports 7 and 8, or any one of ports 7, 8, 9, and 10. Or, it is fixed to port 7; or, in the common search space, the downlink control information format 1 A is used to indicate the transmission mode of the single antenna port or the transmission diversity, where the port number is port 0, and the user equipment defined in the C-RNTI is dedicated. In the search space, the downlink control information format Y1 is used to indicate the transmission mode of the single antenna port, where the port number is port 7 and 8 Any one of the ports 7, 8, 9, and 10, or fixed to the port 7; or, in the common search space, the downlink control information format 1A indicates the transmission mode of the single antenna port or the transmission diversity, where The port number is port 0. In the user equipment-specific search space defined by the C-RNTI, the downlink control information format Y1 is used to indicate the transmission mode of the single antenna port or the transmission diversity, where the port number is any one of ports 7 and 8. Either port 1, 8, 9, or 10, or fixed to port 7. Preferably, the information domain of the downlink control information format Y1 includes at least one or a combination of: a carrier indication domain, a resource allocation header, a resource block allocation, a transmission power control of a physical uplink control channel, a downlink allocation index, a HARQ process number, and an antenna port. a scrambling code identity and layer number, a channel sounding reference signal request, a modulation coding mode of the transport block one, and/or a new data indication and/or a redundancy version; or, the information field of the downlink control information format Y1 includes at least one or a combination of the following : carrier indication field, resource allocation header, resource block allocation, modulation and coding mode, number of HARQ processes, new data indication, redundancy version, transmission power control of the physical uplink control channel, and downlink allocation index. Preferably, the load of the downlink control information format Y1 is the same as the load of the downlink control information format Y2. Preferably, when the load of the downlink control information format Y1 is the same as the load of the downlink control information format Y2, the information field of the downlink control information format Y1 includes bits and added bits that distinguish the downlink control information formats Y1 and Y2, and the downlink control information format Y2 The information field contains bits and added bits that distinguish the downlink control information formats Y1 and Y2. Preferably, in the downlink control information format Y1 or the downlink control information format Y2, the resource allocation bits used include at least one of the following: The resource allocation bit is ceil (log2 ( DD ) + X bits, where NDL is the physical medium corresponding to the downlink bandwidth The number of resource blocks, ceil ( log2 (NDD ) is the starting position of the resource block, X bits are the number of resource blocks, X is 1 or 2 or 3; only the method of continuous resource allocation; the method of continuous resource allocation When a resource particle group is used instead of a physical resource block as a minimum unit, the number of allocated resource blocks is a multiple of the number of resource blocks included in the resource group. When the discontinuous resource allocation method is used, the value of the resource block group size P is expanded. In the downlink control information format Y1 or Y2, the number of the modulation and coding mode bits is 2, 3, 4 or 5. The implementation process of the embodiment of the present invention will be described in detail below with reference to the example. In the transmission mode, in the downlink control information in the transmission mode X, when the cyclic check code in the downlink control channel uses the cell radio When the network temporary identifier is scrambled: in the public search space and the user equipment-specific search space defined by the cell radio network temporary identifier C-RNTI, the downlink control information format DCI Format 1A is used to indicate the transmission mode of the single antenna port or the transmission diversity; In the user equipment-specific search space defined by the C-RNTI, the downlink control information format Y1 is used to indicate the transmission mode of the transmission diversity. As shown in Table 3: Table 3 Correspondence table of the downlink transmission mode, DCI format, search space, and transmission scheme

UE下行 UE downlink

DCI格式搜索空间 PDCCH相应 PDSCH传输方案传输模式 DCI format search space PDCCH corresponding PDSCH transmission scheme transmission mode

非 MBSFN子帧：如果 PBCH天线 Non-MBSFN subframe: If PBCH antenna

Common和 C-RNTI 端口的数目为 1，用单天线端口，端The number of Common and C-RNTI ports is 1, with a single antenna port, the end

DCI format 1 A DCI format 1 A

定义的 UE specific 口 0，否则传输分集。 Defined UE specific port 0, otherwise transmit diversity.

模式 X Mode X

MBSFN子帧：单天线端口，端口 7 MBSFN subframe: single antenna port, port 7

C-RNTI定义的 C-RNTI defined

DCI format Yl 单天线端口，端口 7 DCI format Yl single antenna port, port 7

UE specific 所述下行控制信息格式 Yl为降低下行控制信息格式 1 A的负载的下行控制信息格式。具体地，改变下行控制信息格式 1A的资源分配比特和调制编码方式比特，并且删除 format 0/1 A区分比特。当传输模式 X为上行传输模式，在传输模式 X下的所述下行控制信息中，当下行控制信道中的循环校验码采用小区无线网络临时标识加扰时：在公共搜索空间和小区无线网络临时标识（C-RNTI)定义的用户设备专有搜索空间中，采用下行控制信息格式 DCI Format 0表示单天线端口的传输方式；在 C-RNTI 定义的用户设备专有搜索空间中，采用下行控制信息格式 Y2表示单天线端口的传输方式。如表 4所示：表 4上行传输模式、 DCI格式、搜索空间和传输方案的对应关系表 UE specific The downlink control information format Y1 is a downlink control information format for reducing the load of the downlink control information format 1A. Specifically, the resource allocation bits and the modulation and coding mode bits of the downlink control information format 1A are changed, and the format 0/1 A distinguishing bits are deleted. When the transmission mode X is the uplink transmission mode, in the downlink control information in the transmission mode X, when the cyclic check code in the downlink control channel is scrambled by the cell radio network temporary identifier: in the common search space and the cell radio network In the user equipment-specific search space defined by the temporary identifier (C-RNTI), the downlink control information format DCI Format 0 is used to indicate the transmission mode of the single antenna port; in the user equipment-specific search space defined by the C-RNTI, the downlink control is adopted. The information format Y2 indicates the transmission mode of the single antenna port. As shown in Table 4: Table 4 Correspondence table of uplink transmission mode, DCI format, search space and transmission scheme

所述下行控制信息格式 Y2为降低下行控制信息格式 0的负载的下行控制信息格式。具体地，改变下行控制信息格式 0的资源分配比特和调制编码方式比特，并且删除 format 0/1 A区分比特。下行控制信息格式 Y1包含的信息域如下: 载波指示域、区分 DCI format 1A和 0的比特域、集中和分布式虚拟资源分配选择比特、资源块分配、调制编码方式、 HARQ进程数、新数据指示、冗余版本、物理上行控制信道的传输功率控制、下行分配索引（只在 FDD中有）和信道探测参考信号 ( SRS) 请求。下行控制信息格式 Y2包含的信息域如下：载波指示域、区分 DCI format 1A和 0的比特域、调频选择比特、资源块分配、调制编码方式和冗余版本、新数据指示、冗余版本、物理上行共享信道的传输功率控制、专有解调参考信号（DMRS) 和正交序列索引（OCC) 的循环移位、上行索引、下行分配索引（只在 FDD中有）、信道状态信息（CSI)请求、信道探测参考信号（SRS) 请求和资源分配类型。其中，在下行控制信息格式 Yl或者 Y2中，采用的资源分配比特为以下至少一种方法： The downlink control information format Y2 is a downlink control information format for reducing the load of the downlink control information format 0. Specifically, the resource allocation bit and the modulation and coding mode bit of the downlink control information format 0 are changed, and the format 0/1 A distinguishing bit is deleted. The downlink control information format Y1 includes the following information fields: a carrier indication field, a bit field that distinguishes DCI formats 1A and 0, a centralized and distributed virtual resource allocation selection bit, a resource block allocation, a modulation and coding scheme, a HARQ process number, and a new data indication. , redundancy version, transmission power control of the physical uplink control channel, downlink allocation index (only in FDD), and channel sounding reference signal (SRS) request. The downlink control information format Y2 contains the following information fields: carrier indication field, bit field distinguishing DCI format 1A and 0, FM selection bit, resource block allocation, modulation coding mode and redundancy version, new data indication, redundancy version, physical Transmission power control of uplink shared channel, cyclic shift of dedicated demodulation reference signal (DMRS) and orthogonal sequence index (OCC), uplink index, downlink allocation index (only in FDD), channel state information (CSI) Request, Channel Sounding Reference Signal (SRS) request and resource allocation type. The resource allocation bit used in the downlink control information format Y1 or Y2 is at least one of the following methods:

(1)对于上行或者下行资源分配，资源分配比特为 ceil (log2 (NDD) +1比特，或者 ceil (log2 (NDD) +2比特， NDL为下行带宽对应的物理资源块数； ceil (log2 (NDD)表示资源块的起始位置， 1比特或者 2比特用于表示资源块的数量，如 2比特表示资源块的数量为 1、 2、 3或 4。 (1) For uplink or downlink resource allocation, the resource allocation bit is ceil (log2 (NDD) +1 bit, or ceil (log2 (NDD) + 2 bits, NDL is the number of physical resource blocks corresponding to the downlink bandwidth; ceil (log2 ( NDD) indicates the starting position of the resource block, and 1 bit or 2 bits are used to indicate the number of resource blocks, such as 2 bits indicating that the number of resource blocks is 1, 2, 3 or 4.

(2) 对于下行资源分配采用类型 2 (type 2) 连续资源分配的方法。 (2) A method of type 2 (type 2) continuous resource allocation for downlink resource allocation.

(3) 对于下行资源分配采用类型 2 (type 2) 连续资源分配的方法，同时用资源粒子组（resource element group,简称为 REG)代替物理资源快（physical resource block, 简称为 PRB) 来作为最小单位。 (3) For the downlink resource allocation, the type 2 (type 2) continuous resource allocation method is adopted, and the resource element group (REG) is used instead of the physical resource block (PRB) as the minimum. unit.

(4)对于上行或者下行资源分配，扩大资源块组大小（resource block group size) P。如当下行带宽对应的资源块数量小于 10时， P的大小为 2或者 3。下行控制信息格式 Y1或者 Y2中，调制编码方式（Modulation and Coding Scheme, 简称为 MCS) 比特数为 2、 3或者 4，相应的只用于表示正交相移键控（QPSK) 的调制方式。如表 5中所示， MCS比特数为 3: 表 5 MCS、调制阶数和 TBS的对应关系表 (4) For the uplink or downlink resource allocation, increase the resource block group size P. For example, when the number of resource blocks corresponding to the downlink bandwidth is less than 10, the size of P is 2 or 3. In the downlink control information format Y1 or Y2, the Modulation and Coding Scheme (MCS) bit number is 2, 3 or 4, and the corresponding modulation mode is only used to indicate the quadrature phase shift keying (QPSK). As shown in Table 5, the number of MCS bits is 3: Table 5 Table of correspondence between MCS, modulation order, and TBS

实施例二当传输模式 X为下行传输模式，在传输模式 X下的所述下行控制信息中，当下行控制信道中的循环校验码采用小区无线网络临时标识加扰时：在公共搜索空间和小区无线网络临时标识（C-RNTI)定义的用户设备专有搜索空间中，采用下行控制信息格式 DCI Format 1A表示单天线端口或者传输分集的传输方式；在 C-RNTI定义的用户设备专有搜索空间中，采用下行控制信息格式 Y1表示多层传输的传输方式。如表 6中所示：表 6下行传输模式、 DCI格式、搜索空间和传输方案的对应关系表二 In the second embodiment, when the transmission mode X is the downlink transmission mode, in the downlink control information in the transmission mode X, when the cyclic check code in the downlink control channel is scrambled by the temporary identifier of the cell radio network: In the user equipment-specific search space defined by the common search space and the cell radio network temporary identifier (C-RNTI), the downlink control information format DCI Format 1A is used to indicate the transmission mode of the single antenna port or the transmission diversity; defined in the C-RNTI In the user equipment-specific search space, the downlink control information format Y1 is used to indicate the transmission mode of the multi-layer transmission. As shown in Table 6: Table 6 corresponds to the downlink transmission mode, DCI format, search space and transmission scheme.

所述下行控制信息格式 Yl为降低下行控制信息格式 2C的负载的下行控制信息格式。具体地，改变下行控制信息格式 2C的资源分配比特和调制编码方式比特。当传输模式 X为上行传输模式，在传输模式 X下的所述下行控制信息中，当下行控制信道中的循环校验码采用小区无线网络临时标识加扰时：在公共搜索空间和小区无线网络临时标识（C-RNTI)定义的用户设备专有搜索空间中，采用下行控制信息格式 DCI Format 0表示单天线端口的传输方式；在 C-RNTI 定义的用户设备专有搜索空间中，采用下行控制信息格式 Y2表示闭环空间复用的传输方式。如表 7中所示：表 7上行传输模式、 DCI格式、搜索空间和传输方案的对应关系表二 The downlink control information format Y1 is a downlink control information format for reducing the load of the downlink control information format 2C. Specifically, the resource allocation bits and the modulation and coding mode bits of the downlink control information format 2C are changed. When the transmission mode X is the uplink transmission mode, in the downlink control information in the transmission mode X, when the cyclic check code in the downlink control channel is scrambled by the cell radio network temporary identifier: in the common search space and the cell radio network In the user equipment-specific search space defined by the temporary identifier (C-RNTI), the downlink control information format DCI Format 0 is used to indicate the transmission mode of the single antenna port; in the user equipment-specific search space defined by the C-RNTI, the downlink control is adopted. The information format Y2 represents the transmission mode of closed-loop spatial multiplexing. As shown in Table 7: Table 7 Correspondence relationship between uplink transmission mode, DCI format, search space and transmission scheme

所述下行控制信息格式 Y2为降低下行控制信息格式 4的负载的下行控制信息格式。具体地，改变下行控制信息格式 4的资源分配比特和调制编码方式比特。下行控制信息格式 Y1包含的信息域如下：载波指示域、资源分配头、资源块分配、物理上行控制信道的传输功率控制、下行分配索引（只在 FDD中有）、 HARQ进程数、天线端口扰码身份和层数、信道探测参考信号（SRS) 请求、传输块一的调制编码方式、新数据指示、冗余版本和传输块二的调制编码方式、新数据指示、冗余版本。下行控制信息格式 Y2包含的信息域如下：载波指示域、资源块分配、物理上行共享信道的传输功率控制、专有解调参考信号（DMRS) 和正交序列索引（OCC) 的循环移位、上行索引、下行分配索引（只在 FDD中有）、信道状态信息（CSI) 请求、信道探测参考信号（SRS) 请求、资源分配类型、预编码信息和层数信息、传输块一的调制编码方式、新数据指示、冗余版本和传输块二的调制编码方式、新数据指示、冗余版本。其中，在下行控制信息格式 Y1或者 Y2中，采用的资源分配比特为以下至少一种方法： The downlink control information format Y2 is a downlink control information format for reducing the load of the downlink control information format 4. Specifically, the resource allocation bits and the modulation and coding mode bits of the downlink control information format 4 are changed. The downlink control information format Y1 includes the following information fields: a carrier indication field, a resource allocation header, a resource block allocation, a transmission power control of a physical uplink control channel, a downlink allocation index (only in FDD), a HARQ process number, and an antenna port interference. Code identity and layer number, channel sounding Reference Signal (SRS) Request, Modulation and Coding Mode of Transport Block 1, New Data Indication, Modulation and Coding Mode of Redundant Version and Transport Block 2, New Data Indication, Redundant Version. The downlink control information format Y2 includes the following information fields: carrier indication domain, resource block allocation, transmission power control of the physical uplink shared channel, cyclic demodulation of the dedicated demodulation reference signal (DMRS) and orthogonal sequence index (OCC), Uplink index, downlink allocation index (only in FDD), channel state information (CSI) request, channel sounding reference signal (SRS) request, resource allocation type, precoding information and layer number information, modulation and coding mode of transport block one , new data indication, modulation version of the redundancy version and transport block 2, new data indication, redundancy version. The resource allocation bit used in the downlink control information format Y1 or Y2 is at least one of the following methods:

( 1 )对于上行或者下行资源分配，资源分配比特为 ceil (log2 (NDD ) +1比特，或者 ceil (log2 (NDD) +2比特， NDL为下行带宽对应的物理资源块数； ceil (log2 (NDD)表示资源块的起始位置， 1比特或者 2比特用于表示资源块的数量，如 2比特表示资源块的数量为 1、 2、 3或 4。 (2) 对于下行资源分配采用类型 2 (type 2) 连续资源分配的方法。 (1) For uplink or downlink resource allocation, the resource allocation bit is ceil (log2 (NDD) +1 bit, or ceil (log2 (NDD) + 2 bits, NDL is the number of physical resource blocks corresponding to the downlink bandwidth; ceil (log2 ( NDD) indicates the starting position of the resource block, and 1 bit or 2 bits are used to indicate the number of resource blocks, such as 2 bits indicating that the number of resource blocks is 1, 2, 3 or 4. (2) Type 2 is used for downlink resource allocation. (type 2) The method of continuous resource allocation.

(3 ) 对于下行资源分配采用类型 2 (type 2) 连续资源分配的方法，同时用资源粒子组（REG, resource element group)代替物理资源快（PRB， physical resource block) 来作为最小单位。 (3) For the downlink resource allocation, the type 2 (type 2) continuous resource allocation method is adopted, and the resource element group (REG, resource element group) is used instead of the physical resource block (PRB) as the minimum unit.

(4)对于上行或者下行资源分配，扩大资源块组大小（resource block group size) P。如当下行带宽对应的资源块数量小于 10时， P的大小为 2或者 3。对于下行控制信息格式 Y1，如果方法（ 1 )-(3 )中任意一种，则资源分配头 (Resource allocation header) 比特为 0比特。下行控制信息格式 Y1或者 Y2中，调制编码方式（Modulation and Coding Scheme, MCS) 比特数为 2、 3或者 4，相应的只用于表示正交相移键控（QPSK) 的调制方式。如表 5中所示。实施例三当传输模式 X为下行传输模式，在传输模式 X下的所述下行控制信息中，当下行控制信道中的循环校验码采用小区无线网络临时标识加扰时：在公共搜索空间和小区无线网络临时标识（C-RNTI)定义的用户设备专有搜索空间中，采用下行控制信息格式 DCI Format 1A表示单天线端口或者传输分集的传输方式；在 C-RNTI定义的用户设备专有搜索空间中，采用下行控制信息格式 Y1表示单层传输（或单天线端口）的传输方式，端口号为端口 7和 8中任意一个，或者为端口 7、 8、 9和 10中任意一个，或者固定为端口 7。如表 8中所示：表 8下行传输模式、 DCI格式、搜索空间和传输方案的对应关系表三 (4) For the uplink or downlink resource allocation, the resource block group size P is expanded. For example, when the number of resource blocks corresponding to the downlink bandwidth is less than 10, the size of P is 2 or 3. For the downlink control information format Y1, if any one of the methods (1)-(3), the resource allocation header bit is 0 bits. In the downlink control information format Y1 or Y2, the Modulation and Coding Scheme (MCS) bit number is 2, 3 or 4, and the corresponding modulation mode is only used to indicate the quadrature phase shift keying (QPSK). As shown in Table 5. In the third embodiment, when the transmission mode X is the downlink transmission mode, in the downlink control information in the transmission mode X, when the cyclic check code in the downlink control channel is scrambled by the temporary identifier of the cell radio network: In the user equipment-specific search space defined by the common search space and the cell radio network temporary identifier (C-RNTI), the downlink control information format DCI Format 1A is used to indicate the transmission mode of the single antenna port or the transmission diversity; defined in the C-RNTI In the user equipment-specific search space, the downlink control information format Y1 is used to indicate the transmission mode of the single-layer transmission (or single-antenna port), and the port number is any one of ports 7 and 8, or is in ports 7, 8, 9, and 10. Either one, or fixed to port 7. As shown in Table 8: Table 8 Correspondence relationship between downlink transmission mode, DCI format, search space and transmission scheme

所述下行控制信息格式 Y1为下行控制信息格式 2C，其中天线端口、扰码身份和层数可以采用 0、 1或者 2比特。当采用 0比特时，天线端口固定为 port 7，；当采用 1 比特时，这 1 比特用于区分 port 7的或，或者用于区分 port 7和 8，固定；当采用 2 比特时，用于区分天线端口 port 7或 8，以及或，如表 9中所示；当采用 3比特时，如表 10中所示。同时，只包含一个传输块的调制编码方式、新数据指示和冗余版本信息域。或者，所述下行控制信息格式 Y1为降低下行控制信息格式 2C或者下行控制信息格式 1 的负载的下行控制信息格式。具体地，改变下行控制信息格式 2C的资源分配比特和调制编码方式比特，并且只包含一个传输块的调制编码方式（MCS )、新数据指示（New Data Indicator, DI) 和冗余版本 (Redundancy Version, RV) 比特，对于天线端口、扰码身份和层数采用 0、 1、 2或者 3比特；或者，改变下行控制信息格式 1的资源分配比特和调制编码方式比特。表 9天线端口、扰码身份和层数与信息的对应关系表 The downlink control information format Y1 is a downlink control information format 2C, wherein the antenna port, the scrambling code identity, and the number of layers may be 0, 1, or 2 bits. When 0 bits are used, the antenna port is fixed to port 7,; when 1 bit is used, this 1 bit is used to distinguish the port 7 or, or to distinguish between ports 7 and 8, fixed; when 2 bits are used, The antenna port port 7 or 8 is distinguished, and or, as shown in Table 9, when 3 bits are employed, as shown in Table 10. At the same time, only one modulation block coding mode, new data indication and redundancy version information field are included. Alternatively, the downlink control information format Y1 is a downlink control information format for reducing the load of the downlink control information format 2C or the downlink control information format 1. Specifically, the resource allocation bit and the modulation and coding mode bits of the downlink control information format 2C are changed, and only one modulation block coding mode (MCS), new data indicator (DI data), and redundancy version (Redundancy Version) are included. , RV) bits, using 0, 1, 2, or 3 bits for the antenna port, scrambling code identity, and layer number; or, changing the resource allocation bits and modulation coding mode bits of the downlink control information format 1. Table 9 Correspondence table between antenna port, scrambling code identity and layer number and information

表 10天线端口、扰码身份和层数与信息的对应关系表二

Table 10 Correspondence between antenna port, scrambling code identity and layer number and information Table 2

当传输模式 X为上行传输模式，在传输模式 X下的所述下行控制信息中，当下行控制信道中的循环校验码采用小区无线网络临时标识加扰时：在公共搜索空间和小区无线网络临时标识（C-RNTI)定义的用户设备专有搜索空间中，采用下行控制信息格式 DCI Format 0表示单天线端口的传输方式；在 C-RNTI 定义的用户设备专有搜索空间中，采用下行控制信息格式 Y2表示单层传输（或单天线端口）的传输方式。如表 11中所示：表 11上行传输模式、 DCI格式、搜索空间和传输方案的对应关系表三 When the transmission mode X is the uplink transmission mode, in the downlink control information in the transmission mode X, when the cyclic check code in the downlink control channel is scrambled by the cell radio network temporary identifier: in the common search space and the cell radio network In the user equipment-specific search space defined by the temporary identifier (C-RNTI), the downlink control information format DCI Format 0 is used to indicate the transmission mode of the single antenna port; in the user equipment-specific search space defined by the C-RNTI, the downlink control is adopted. The information format Y2 indicates the transmission mode of a single layer transmission (or single antenna port). As shown in Table 11: Table 11 Correspondence table of uplink transmission mode, DCI format, search space and transmission scheme

或者，只在 C-RNTI定义的用户设备专有搜索空间中，采用下行控制信息格式 Y2 表示单天线端口的传输方式。如表 6中所示。所述下行控制信息格式 Y2为降低下行控制信息格式 4的负载的下行控制信息格式。具体地，改变下行控制信息格式 4的资源分配比特和调制编码方式比特，并且只包含一个传输块的调制编码方式（MCS) 和新数据指示（New Data Indicator, DI) 比特，对于预编码和层数在 2天线时采用 3比特， 4天线时采用 5比特，如表 12中所示。表 12 Bit field mapped to index禾口 Message对应关系表 Alternatively, the downlink control information format Y2 is used to indicate the transmission mode of the single antenna port only in the user equipment-specific search space defined by the C-RNTI. As shown in Table 6. The downlink control information format Y2 is a downlink control information format for reducing the load of the downlink control information format 4. Specifically, the resource allocation bit and the modulation and coding mode bits of the downlink control information format 4 are changed, and only one modulation block coding mode (MCS) and a new data indicator (DI) bit of the transmission block are included, for precoding and layer The number is 3 bits for 2 antennas and 5 bits for 4 antennas, as shown in Table 12. Table 12 Bit field mapped to index and Message correspondence table

下行控制信息格式 Y1包含的信息域如下: 载波指示域、资源分配头、资源块分配、物理上行控制信道的传输功率控制、下行分配索引（只在 FDD中有）、 HARQ进程数、天线端口扰码身份和层数、信道探测参考信号（SRS) 请求、传输块一的调制编码方式、新数据指示和冗余版本。其中，天线端口扰码身份和层数比特为 0、 1或者 2比特。或者，载波指示域、资源分配头、资源块分配、调制编码方式、 HARQ进程数、新数据指示、冗余版本、物理上行控制信道的传输功率控制和下行分配索引（只在 FDD 中有）。下行控制信息格式 Y2包含的信息域如下：载波指示域、资源块分配、物理上行共享信道的传输功率控制、专有解调参考信号（DMRS) 和正交序列索引（OCC) 的循环移位、上行索引、下行分配索引（只在 FDD中有）、信道状态信息（CSI) 请求、信道探测参考信号（SRS) 请求、资源分配类型、预编码信息和层数信息、传输块一的调制编码方式、新数据指示、冗余版本。其中，下行控制信息格式 Y1或者 Y2中，采用的资源分配比特为以下至少一种方法：资源分配比特为 ceil (log2 ( DD) +1比特，或者 ceil (log2 ( DL)) +2比特， DL为下行带宽对应的物理资源块数； ceil (log2 (NDL))表示资源块的起始位置， 1 比特或者 2比特用于表示资源块的数量，如 2比特表示资源块的数量为 1、 2、 3或 4。只采用连续资源分配的方法。采用连续资源分配的方法时，用资源粒子组（REG， resource element group )代替物理资源快（PRB， physical resource block)来作为最小单位；采用非连续资源分配方法时，扩大资源块组大小（resource block group size) P。如当下行带宽对应的资源块数量小于 10时， P的大小为 2或者 3。采用连续资源分配的方法时，用 PRB作为最小单位；采用非连续资源分配方法时，不扩大资源块组大小 P。对于下行控制信息格式 Yl，如果方法 1-3中任意一种，则资源分配头（Resource allocation header) 比特为 0比特。下行控制信息格式 Y1或者 Y2中，调制编码方式（Modulation and Coding Scheme,The downlink control information format Y1 includes the following information fields: a carrier indication field, a resource allocation header, a resource block allocation, a transmission power control of a physical uplink control channel, a downlink allocation index (only in FDD), a HARQ process number, and an antenna port interference. Code identity and layer number, channel sounding reference signal (SRS) request, modulation code mode of transport block one, new data indication and redundancy version. The antenna port scrambling identity and layer number bits are 0, 1, or 2 bits. Or, the carrier indication field, the resource allocation header, the resource block allocation, the modulation and coding mode, the number of HARQ processes, the new data indication, the redundancy version, the transmission power control of the physical uplink control channel, and the downlink allocation index (only in the FDD). The downlink control information format Y2 includes the following information fields: carrier indication domain, resource block allocation, transmission power control of the physical uplink shared channel, cyclic demodulation of the dedicated demodulation reference signal (DMRS) and orthogonal sequence index (OCC), Uplink index, downlink allocation index (only in FDD), channel state information (CSI) request, channel sounding reference signal (SRS) request, resource allocation type, precoding information and layer number information, modulation and coding mode of transport block one , new data indication, redundant version. The resource allocation bit used in the downlink control information format Y1 or Y2 is at least one of the following methods: The resource allocation bit is ceil (log2 (DD) +1 bit, or ceil (log2 (DL)) + 2 bits, DL The number of physical resource blocks corresponding to the downlink bandwidth; ceil (log2 (NDL)) indicates the starting position of the resource block, and 1 bit or 2 bits are used to indicate the number of resource blocks, for example, 2 bits indicate that the number of resource blocks is 1, 2 3, or 4. Only use the method of continuous resource allocation. When using the method of continuous resource allocation, use the resource element group (REG, resource element group) instead of the physical resource block (PRB) as the minimum unit; In the case of the continuous resource allocation method, the resource block group size P is expanded. For example, when the number of resource blocks corresponding to the downlink bandwidth is less than 10, the size of P is 2 or 3. When the method of continuous resource allocation is adopted, the PRB is used as the minimum unit; when the discontinuous resource allocation method is adopted, the resource block group size P is not expanded. For the downlink control information format Y1, if any one of the methods 1-3, the resource allocation header bit is 0 bits. In the downlink control information format Y1 or Y2, modulation and coding scheme (Modulation and Coding Scheme,

MCS) 比特数为 2、 3、 4或者 5。实施例四当传输模式 X为下行传输模式，在传输模式 X下的所述下行控制信息中，当下行控制信道中的循环校验码采用小区无线网络临时标识加扰时：在公共搜索空间中，采用下行控制信息格式 DCI Format表示单天线端口或者传输分集的传输方式；在小区无线网络临时标识（C-RNTI)定义的用户设备专有搜索空间中，采用下行控制信息格式 Y1表示 Z1传输方式， Z1为以下传输方式中的一种或者多种：传输分集单层传输（单天线端口）最多 8层传输 (up to 8 layer transmission), 端口 7-端口 14 如表 13中所示： MCS) The number of bits is 2, 3, 4 or 5. Embodiment 4: When the transmission mode X is the downlink transmission mode, in the downlink control information in the transmission mode X, when the cyclic check code in the downlink control channel is scrambled by the cell wireless network temporary identifier: in the common search space The downlink control information format DCI Format is used to indicate the transmission mode of the single antenna port or the transmission diversity. In the user equipment-specific search space defined by the cell radio network temporary identifier (C-RNTI), the downlink control information format Y1 is used to indicate the Z1 transmission mode. , Z1 is one or more of the following transmission modes: transmission diversity single layer transmission (single antenna port) up to 8 layer transmission (up to 8 layer transmission), port 7 - port 14 as shown in Table 13:

表 13下行传输模式、 DCI格式、搜索空间和传输方案的对应关系表四 Table 13 Correspondence relationship between downlink transmission mode, DCI format, search space and transmission scheme

所述下行控制信息格式 Yl为降低下行控制信息格式 1A或 2C的负载的下行控制信息格式。具体地，改变下行控制信息格式 1A或 2C的资源分配比特和调制编码方式比特。或者在改变上述资源分配和调制编码方式比特的同时，增加 N个 0比特， N为如果下行控制信息格式 Y1的负载小于 Y2的时候，它们的负载差别数；增加 1比特用于区分传输分集和闭环空间复用的传输方式；增加 1 比特用于区分下行控制信息格式 Y1禾口 Y2。当传输模式 X为上行传输模式，在传输模式 X下的所述下行控制信息中，当下行控制信道中的循环校验码采用小区无线网络临时标识加扰时：在公共搜索空间中，采用下行控制信息格式 DCI Format 0表示单天线端口或者传输分集的传输方式；在小区无线网络临时标识（C-RNTI)定义的用户设备专有搜索空间中，采用下行控制信息格式 Y2表示 Z2传输方式， Z1为以下传输方式中的一种或者多种：单层传输（单天线端口）闭环空间复用如表 14中所示。表 14上行传输模式、 DCI格式、搜索空间和传输方案的对应关系表四

The downlink control information format Y1 is a downlink control information format for reducing the load of the downlink control information format 1A or 2C. Specifically, the resource allocation bits and the modulation and coding mode bits of the downlink control information format 1A or 2C are changed. Or, while changing the resource allocation and modulation coding mode bits, adding N 0 bits, where N is the load difference number if the load of the downlink control information format Y1 is less than Y2; adding 1 bit is used to distinguish the transmission diversity and The transmission mode of closed-loop spatial multiplexing; adding 1 bit is used to distinguish the downlink control information format Y1 and Y2. When the transmission mode X is the uplink transmission mode, in the downlink control information in the transmission mode X, when the cyclic check code in the downlink control channel is scrambled by the temporary identifier of the cell radio network: in the public search space, the downlink is adopted. The control information format DCI Format 0 indicates the transmission mode of the single antenna port or the transmission diversity. In the user equipment-specific search space defined by the cell radio network temporary identifier (C-RNTI), the downlink control information format Y2 is used to indicate the Z2 transmission mode, Z1. It is one or more of the following transmission modes: Single layer transmission (single antenna port) Closed loop spatial multiplexing is shown in Table 14. Table 14 Correspondence relationship between uplink transmission mode, DCI format, search space and transmission scheme

所述下行控制信息格式 Y2为降低下行控制信息格式 0或 4的负载的下行控制信息格式。具体地，改变下行控制信息格式 0或 4的资源分配比特和调制编码方式比特。或者在改变上述资源分配和调制编码方式比特的同时，增加 N个 0比特， N为如果下行控制信息格式 Y2的负载小于 Y1的时候，它们的负载差别数；增加 1比特用于区分单天线端口和闭环空间复用的传输方式；增加 1 比特用于区分下行控制信息格式 Y1 和 Y2。下行控制信息格式 Y1包含的信息域如下：载波指示域、资源分配头、资源块分配、物理上行控制信道的传输功率控制、下行分配索引（只在 FDD中有）、 HARQ进程数、天线端口扰码身份和层数、信道探测参考信号（SRS) 请求、传输块一的调制编码方式、新数据指示、冗余版本和传输块二的调制编码方式、新数据指示、冗余版本；或者再包含：区分下行控制信息格式 Y1 和 Y2的比特和添加比特（padding)。或者：载波指示域、集中和分布式虚拟资源分配选择比特、资源块分配、调制编码方式、The downlink control information format Y2 is a downlink control information format for reducing the load of the downlink control information format 0 or 4. Specifically, the resource allocation bits and the modulation and coding mode bits of the downlink control information format 0 or 4 are changed. Or, while changing the resource allocation and modulation coding mode bits, adding N 0 bits, where N is the load difference number if the load of the downlink control information format Y2 is less than Y1; adding 1 bit is used to distinguish the single antenna port. And the closed-loop spatial multiplexing transmission mode; adding 1 bit is used to distinguish the downlink control information formats Y1 and Y2. The downlink control information format Y1 includes the following information fields: a carrier indication field, a resource allocation header, a resource block allocation, a transmission power control of a physical uplink control channel, a downlink allocation index (only in FDD), a HARQ process number, and an antenna port interference. Code identity and layer number, channel sounding Reference signal (SRS) request, modulation and coding mode of transport block 1, new data indication, modulation and coding mode of redundancy version and transport block 2, new data indication, redundancy version; or further include: distinguishing downlink control information format Y1 and Y2 bits and padding. Or: carrier indication domain, centralized and distributed virtual resource allocation selection bits, resource block allocation, modulation and coding mode,

HARQ进程数、新数据指示、冗余版本、物理上行控制信道的传输功率控制、下行分配索引（只在 FDD中有）和信道探测参考信号（SRS)请求；或者再包含：区分下行控制信息格式 Y1和 Y2的比特和添加比特（padding)。下行控制信息格式 Y2包含的信息域如下：载波指示域、资源块分配、物理上行共享信道的传输功率控制、专有解调参考信号（DMRS) 和正交序列索引（OCC) 的循环移位、上行索引、下行分配索引（只在 FDD中有）、信道状态信息（CSI) 请求、信道探测参考信号（SRS) 请求、资源分配类型、预编码信息和层数信息、传输块一的调制编码方式、新数据指示、冗余版本和传输块二的调制编码方式、新数据指示、冗余版本；或者再包含：区分下行控制信息格式 Y1和 Y2的比特和添加比特（ padding )。或者：载波指示域、调频选择比特、资源块分配、调制编码方式和冗余版本、新数据指示、冗余版本、物理上行共享信道的传输功率控制、专有解调参考信号（DMRS ) 和正交序列索引（OCC) 的循环移位、上行索引、下行分配索引（只在 FDD中有）、信道状态信息（CSI)请求、信道探测参考信号（SRS)请求和资源分配类型；或者再包含：区分下行控制信息格式 Y1和 Y2的比特和添加比特（padding)。下行控制信息格式 Y1或者 Y2中，采用的资源分配比特为以下至少一种方法：资源分配比特为 ceil (log2 ( DD) +1比特，或者 ceil (log2 ( DL)) +2比特， DL为下行带宽对应的物理资源块数； ceil (log2 (NDL))表示资源块的起始位置， 1 比特或者 2比特用于表示资源块的数量，如 2比特表示资源块的数量为 1、 2、 3或 4。只采用连续资源分配的方法；采用连续资源分配的方法时，用资源粒子组（REG， resource element group )代替物理资源快（PRB， physical resource block)来作为最小单位；采用非连续资源分配方法时，扩大资源块组大小（resource block group size) P。如当下行带宽对应的资源块数量小于 10时， P的大小为 2或者 3。采用连续资源分配的方法时，用 PRB作为最小单位；采用非连续资源分配方法时，不扩大资源块组大小 P。对于下行控制信息格式 Yl，如果采用 type 2的资源分配方法，就可以删除资源分配头 (Resource allocation header) 比特。下行控制信息格式 Y1或者 Y2中，调制编码方式（Modulation and Coding Scheme, MCS) 比特数为 2、 3、 4或者 5。实施例五当传输模式 X为下行传输模式，在传输模式 X下的所述下行控制信息中，当下行控制信道中的循环校验码采用小区无线网络临时标识加扰时：在公共搜索空间和小区无线网络临时标识（C-RNTI)定义的用户设备专有搜索空间中，采用下行控制信息格式 DCI Format 1A表示单天线端口或者传输分集的传输方式，如表 15中所示： Number of HARQ processes, new data indication, redundancy version, transmission power control of the physical uplink control channel, downlink allocation index (only in FDD), and channel sounding reference signal (SRS) request; or include: distinguishing the downlink control information format Bits and padding of Y1 and Y2. The downlink control information format Y2 includes the following information fields: carrier indication domain, resource block allocation, transmission power control of the physical uplink shared channel, cyclic demodulation of the dedicated demodulation reference signal (DMRS) and orthogonal sequence index (OCC), Uplink index, downlink allocation index (only in FDD), channel state information (CSI) request, channel sounding reference signal (SRS) request, resource allocation type, precoding information and layer number information, modulation and coding mode of transport block one , new data indication, modulation version of the redundancy version and transport block 2, new data indication, redundancy version; or further comprising: distinguishing bits and padding of the downlink control information formats Y1 and Y2. Or: carrier indication field, FM selection bit, resource block allocation, modulation and coding mode and redundancy version, new data indication, redundancy version, transmission power control of physical uplink shared channel, proprietary demodulation reference signal (DMRS) and positive Interleaved sequence index (OCC) cyclic shift, uplink index, downlink allocation index (only in FDD), channel state information (CSI) request, channel sounding reference signal (SRS) request, and resource allocation type; or The bits and padding of the downlink control information formats Y1 and Y2 are distinguished. In the downlink control information format Y1 or Y2, the resource allocation bits used are at least one of the following methods: The resource allocation bit is ceil (log2 (DD) +1 bit, or ceil (log2 (DL)) + 2 bits, and DL is downlink The number of physical resource blocks corresponding to the bandwidth; ceil (log2 (NDL)) indicates the starting position of the resource block, and 1 bit or 2 bits are used to indicate the number of resource blocks, for example, 2 bits indicate that the number of resource blocks is 1, 2, 3 Or 4. Only adopt the method of continuous resource allocation; when adopting the method of continuous resource allocation, use the resource element group (REG, resource element group) instead of the physical resource block (PRB) as the minimum unit; Formula In the case of the law, the resource block group size P is expanded. For example, when the number of resource blocks corresponding to the downlink bandwidth is less than 10, the size of P is 2 or 3. When the method of continuous resource allocation is adopted, the PRB is used as the minimum unit; when the discontinuous resource allocation method is adopted, the resource block group size P is not expanded. For the downlink control information format Y1, if the resource allocation method of type 2 is adopted, the resource allocation header bit can be deleted. In the downlink control information format Y1 or Y2, the Modulation and Coding Scheme (MCS) bit number is 2, 3, 4 or 5. Embodiment 5: When the transmission mode X is the downlink transmission mode, in the downlink control information in the transmission mode X, when the cyclic check code in the downlink control channel is scrambled by the cell wireless network temporary identifier: in the common search space and In the user equipment-specific search space defined by the Cell Radio Network Temporary Identity (C-RNTI), the downlink control information format DCI Format 1A is used to indicate the transmission mode of the single antenna port or the transmission diversity, as shown in Table 15:

表 15下行传输模式、 DCI格式、搜索空间和传输方案的对应关系表五 Table 15 Correspondence table of downlink transmission mode, DCI format, search space and transmission scheme

当传输模式 X为上行传输模式，在传输模式 X下的所述下行控制信息中，当下行控制信道中的循环校验码采用小区无线网络临时标识加扰时：在公共搜索空间和小区无线网络临时标识（C-RNTI)定义的用户设备专有搜索空间中，采用下行控制信息格式 DCI Format 0表示单天线端口的传输方式；在 C-RNTI 定义的用户设备专有搜索空间中，采用下行控制信息格式 Y2表示单天线端口的传输方式。如表 16所示：表 16上行传输模式、 DCI格式、搜索空间和传输方案的对应关系表五 When the transmission mode X is the uplink transmission mode, in the downlink control information in the transmission mode X, when the cyclic check code in the downlink control channel is scrambled by the cell radio network temporary identifier: in the common search space and the cell radio network In the user equipment-specific search space defined by the temporary identifier (C-RNTI), the downlink control information format DCI Format 0 is used to indicate the transmission mode of the single antenna port; in the user equipment-specific search space defined by the C-RNTI, the downlink control is adopted. The information format Y2 indicates the transmission mode of the single antenna port. As shown in Table 16: Table 16 Correspondence table of uplink transmission mode, DCI format, search space and transmission scheme

需要说明的是，在附图的流程图示出的步骤可以在诸如一组计算机可执行指令的计算机***中执行，并且，虽然在流程图中示出了逻辑顺序，但是在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤。本发明实施例还提供了一种传输装置，该传输装置可以用于实现上述传输方法。图 4是根据本发明实施例的传输装置的结构框图，如图 4所示，包括设置模块 42和发送模块 ₄₄。下面对其结构进行详细描述。设置模块 42，设置为设置传输模式 X；发送模块 44，连接至设置模块 42，设置为通过设置模块 42设置的传输模式 X对应的下行控制信息格式向用户设备发送下行控制信息，其中下行控制信息格式包括以下至少之一：下行控制信息格式 1A、下行控制信息格式 0、下行控制信息格式 Yl、下行控制信息格式 Υ2。需要说明的是，装置实施例中描述的传输装置对应于上述的方法实施例，其具体的实现过程在方法实施例中已经进行过详细说明，在此不再赘述。综上所述，根据本发明的上述实施例，提供了一种传输方法及装置。本发明实施例提供了一种传输模式设计方案，通过这种传输模式的设计以及与其相应的 PDCCH 负载的降低，可以提升 PDCCH的容量以及降低 PDCCH的阻塞率，方便实际应用。另夕卜， LTE-Advanced***中，这种传输模式对应的低负载的 PDCCH可以解决用户数量增多和干扰严重等问题。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。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。 It should be noted that the steps shown in the flowchart of the accompanying drawings may be performed in a computer system such as a set of computer executable instructions, and, although the logical order is shown in the flowchart, in some cases, The steps shown or described may be performed in an order different than that herein. The embodiment of the invention further provides a transmission device, which can be used to implement the above transmission method. FIG. 4 is a structural block diagram of a transmission apparatus according to an embodiment of the present invention. As shown in FIG. 4, a setting module 42 and a transmitting module _{44 are included} . The structure is described in detail below. The setting module 42 is configured to set the transmission mode X. The sending module 44 is connected to the setting module 42 and configured to send downlink control information to the user equipment by using the downlink control information format corresponding to the transmission mode X set by the setting module 42, where the downlink control information is The format includes at least one of the following: a downlink control information format 1A, a downlink control information format 0, a downlink control information format Y1, and a downlink control information format Υ2. It should be noted that the transmission device described in the device embodiment corresponds to the foregoing method embodiment, and the specific implementation process has been described in detail in the method embodiment, and details are not described herein again. In summary, according to the above embodiments of the present invention, a transmission method and apparatus are provided. The embodiment of the present invention provides a transmission mode design scheme. The design of the transmission mode and the corresponding PDCCH load reduction can improve the capacity of the PDCCH and reduce the blocking rate of the PDCCH, which is convenient for practical applications. In addition, in the LTE-Advanced system, the low-load PDCCH corresponding to the transmission mode can solve the problems of an increase in the number of users and serious interference. Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device, or they may be separately fabricated into individual integrated circuit modules, or they may be Multiple modules or steps are made into a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

权利要求书 Claim

1. 一种传输方法，包括： 1. A method of transmission, comprising:

设置传输模式 X Set the transfer mode X

通过所述传输模式 X对应的下行控制信息格式向用户设备发送下行控制信息，其中所述下行控制信息格式包括以下至少之一：下行控制信息格式 1A、下行控制信息格式 0、下行控制信息格式 Yl、下行控制信息格式 Υ2。 And transmitting the downlink control information to the user equipment by using the downlink control information format corresponding to the transmission mode X, where the downlink control information format includes at least one of the following: a downlink control information format 1A, a downlink control information format 0, and a downlink control information format Y1. The downlink control information format is Υ2.

2. 根据权利要求 1所述的方法，其中，在所述传输模式 X是下行传输模式的情况下，在所述传输模式 X下的所述下行控制信息中，当下行控制信道中的循环校验码采用小区无线网络临时标识 C-RNTI加扰时，设置传输模式 X包括： 2. The method according to claim 1, wherein, in the case that the transmission mode X is a downlink transmission mode, in the downlink control information in the transmission mode X, when a cyclic correction is performed in a downlink control channel When the code verification uses the cell radio network temporary identifier C-RNTI scrambling, setting the transmission mode X includes:

在公共搜索空间和所述 C-RNTI定义的用户设备专有搜索空间中，采用所述下行控制信息格式 1 Α表示单天线端口或者传输分集的传输方式； And in the common search space and the user equipment-specific search space defined by the C-RNTI, using the downlink control information format 1 Α to indicate a single antenna port or a transmission diversity transmission manner;

或者，在公共搜索空间中，采用所述下行控制信息格式 1A表示单天线端口或者传输分集的传输方式，在所述 C-RNTI定义的用户设备专有搜索空间中，采用所述下行控制信息格式 Y1表示单天线端口或者传输分集的传输方式；或者，在公共搜索空间和所述 C-RNTI定义的用户设备专有搜索空间中，采用所述下行控制信息格式 1A表示单天线端口或者传输分集的传输方式，在所述 C-RNTI定义的用户设备专有搜索空间中，采用所述下行控制信息格式 Y1 表示单天线端口或者传输分集的传输方式。 Alternatively, in the common search space, the downlink control information format 1A is used to indicate a single antenna port or a transmission diversity transmission mode, and the downlink control information format is adopted in the user equipment-specific search space defined by the C-RNTI. Y1 represents a transmission mode of a single antenna port or a transmission diversity; or, in a common search space and a user equipment-specific search space defined by the C-RNTI, the downlink control information format 1A is used to indicate a single antenna port or a transmission diversity. The transmission mode, in the user equipment-specific search space defined by the C-RNTI, uses the downlink control information format Y1 to indicate a single antenna port or a transmission diversity transmission mode.

3. 根据权利要求 1所述的方法，其中，在所述传输模式 X是上行传输模式的情况下，在所述传输模式 X下的所述下行控制信息中，当下行控制信道中的循环校验码采用 C-RNTI加扰时，设置传输模式 X包括： The method according to claim 1, wherein, in the case that the transmission mode X is an uplink transmission mode, in the downlink control information in the transmission mode X, when a cyclic correction is performed in a downlink control channel When the code is scrambled by C-RNTI, setting the transmission mode X includes:

在公共搜索空间和所述 C-RNTI定义的用户设备专有搜索空间中，采用所述下行控制信息格式 0表示单天线端口的传输方式，在所述 C-RNTI定义的用户设备专有搜索空间中，采用所述下行控制信息格式 Y2表示闭环空间复用单层传输方式； In the common search space and the user equipment-specific search space defined by the C-RNTI, the downlink control information format 0 is used to indicate a transmission mode of a single antenna port, and the user equipment-specific search space defined by the C-RNTI is used. The downlink control information format Y2 is used to represent a closed-loop spatial multiplexing single-layer transmission mode;

或者，在公共搜索空间中，采用所述下行控制信息格式 0表示单天线端口的传输方式，在所述 C-RNTI定义的用户设备专有搜索空间中，采用所述下行控制信息格式 Y2表示闭环空间复用单层传输方式；或者，在公共搜索空间中，采用所述下行控制信息格式 0表示单天线端口的传输方式，在所述 C-RNTI定义的用户设备专有搜索空间中，采用所述下行控制信息格式 Y2表示单天线端口的传输方式。 Or, in the common search space, the downlink control information format 0 is used to indicate the transmission mode of the single antenna port, and in the user equipment-specific search space defined by the C-RNTI, the downlink control information format Y2 is used to represent the closed loop. Spatial multiplexing single layer transmission mode; Or, in the common search space, the downlink control information format 0 is used to indicate the transmission mode of the single antenna port, and in the user equipment-specific search space defined by the C-RNTI, the downlink control information format Y2 is used to indicate the single The transmission mode of the antenna port.

4. 根据权利要求 2或 3所述的方法，其中，所述下行控制信息格式 Y1 的信息域包括以下至少之一或组合：载波指示域、区分 DCI format lA和 0的比特域、集中和分布式虚拟资源分配选择比特、资源块分配、调制编码方式、 HARQ进程数、新数据指示、冗余版本、物理上行控制信道的传输功率控制、下行分配索引、信道探测参考信号请求； The method according to claim 2 or 3, wherein the information field of the downlink control information format Y1 comprises at least one or a combination of: a carrier indication field, a bit field distinguishing DCI formats lA and 0, a concentration and a distribution Virtual resource allocation selection bit, resource block allocation, modulation and coding mode, number of HARQ processes, new data indication, redundancy version, transmission power control of physical uplink control channel, downlink allocation index, channel sounding reference signal request;

所述下行控制信息格式 Y2的信息域包括以下至少之一或组合：载波指示域、区分 DCI format 1A和 0的比特域、调频选择比特、资源块分配、调制编码方式和冗余版本、新数据指示、冗余版本、物理上行共享信道的传输功率控制、专有解调参考信号、正交序列索引的循环移位、上行索引、下行分配索引、信道状态信息请求、信道探测参考信号请求、资源分配类型。 The information field of the downlink control information format Y2 includes at least one or a combination of: a carrier indication field, a bit field that distinguishes DCI formats 1A and 0, a frequency modulation selection bit, a resource block allocation, a modulation and coding mode, a redundancy version, and new data. Indication, redundancy version, transmission power control of physical uplink shared channel, proprietary demodulation reference signal, cyclic shift of orthogonal sequence index, uplink index, downlink allocation index, channel state information request, channel sounding reference signal request, resource Assignment type.

5. 根据权利要求 1所述的方法，其中，在所述传输模式 X是下行传输模式的情况下，在所述传输模式 X下的所述下行控制信息中，当下行控制信道中的循环校验码采用小区无线网络临时标识 C-RNTI加扰时，设置传输模式 X包括： The method according to claim 1, wherein, in the case that the transmission mode X is a downlink transmission mode, in the downlink control information in the transmission mode X, when a cyclic control is performed in a downlink control channel When the code verification uses the cell radio network temporary identifier C-RNTI scrambling, setting the transmission mode X includes:

在公共搜索空间和所述 C-RNTI定义的用户设备专有搜索空间中，采用所述下行控制信息格式 1A表示单天线端口或者传输分集的传输方式，在所述 C-RNTI定义的用户设备专有搜索空间中，采用所述下行控制信息格式 Y1表示多层传输的传输方式； In the public search space and the user equipment-specific search space defined by the C-RNTI, the downlink control information format 1A is used to indicate a single antenna port or a transmission diversity transmission mode, and the user equipment defined in the C-RNTI is dedicated. In the search space, the downlink control information format Y1 is used to indicate the transmission mode of the multi-layer transmission;

或者，在公共搜索空间中，采用所述下行控制信息格式 1A表示单天线端口或者传输分集的传输方式，在所述 C-RNTI定义的用户设备专有搜索空间中，采用所述下行控制信息格式 Y1表示多层传输的传输方式。 Alternatively, in the common search space, the downlink control information format 1A is used to indicate a single antenna port or a transmission diversity transmission mode, and the downlink control information format is adopted in the user equipment-specific search space defined by the C-RNTI. Y1 represents the transmission mode of the multilayer transmission.

6. 根据权利要求 1所述的方法，其中，在所述传输模式 X是上行传输模式的情况下，在所述传输模式 X下的所述下行控制信息中，当下行控制信道中的循环校验码采用 C-RNTI加扰时，设置传输模式 X包括： The method according to claim 1, wherein, in the case that the transmission mode X is an uplink transmission mode, in the downlink control information in the transmission mode X, when a cyclic correction is performed in a downlink control channel When the code is scrambled by C-RNTI, setting the transmission mode X includes:

在公共搜索空间和所述 C-RNTI定义的用户设备专有搜索空间中，采用所述下行控制信息格式 0表示单天线端口的传输方式，在所述 C-RNTI定义的用户设备专有搜索空间中，采用所述下行控制信息格式 Y2表示闭环空间复用的传输方式；或者，在公共搜索空间中，采用所述下行控制信息格式 0表示单天线端口的传输方式，在所述 C-RNTI定义的用户设备专有搜索空间中，采用所述下行控制信息格式 Y2表示闭环空间复用的传输方式。 In the common search space and the user equipment-specific search space defined by the C-RNTI, the downlink control information format 0 is used to indicate a transmission mode of a single antenna port, and the user equipment-specific search space defined by the C-RNTI is used. The downlink control information format Y2 is used to indicate a closed-loop spatial multiplexing transmission mode; Or, in the common search space, the downlink control information format 0 is used to indicate the transmission mode of the single antenna port, and in the user equipment-specific search space defined by the C-RNTI, the downlink control information format Y2 is used to represent the closed loop. Spatial multiplexing transmission.

7. 根据权利要求 5或 6所述的方法，其中，所述下行控制信息格式 Y1 的信息域包括以下至少之一或组合：载波指示域、资源分配头、资源块分配、物理上行控制信道的传输功率控制、下行分配索引、 HARQ进程数、天线端口扰码身份和层数、信道探测参考信号请求、传输块一的调制编码方式、传输块一新数据指示、传输块一的冗余版本、传输块二的调制编码方式、传输块二的新数据指示、传输块二的冗余版本； The method according to claim 5 or 6, wherein the information domain of the downlink control information format Y1 comprises at least one or a combination of: a carrier indication domain, a resource allocation header, a resource block allocation, and a physical uplink control channel. Transmission power control, downlink allocation index, HARQ process number, antenna port scrambling code identity and layer number, channel sounding reference signal request, modulation block coding mode of transport block 1, new data indication of transport block, redundancy version of transport block one, Modulation coding mode of transport block 2, new data indication of transport block 2, redundant version of transport block 2;

所述下行控制信息格式 Y2的信息域包括以下至少之一或组合：载波指示域、资源块分配、物理上行共享信道的传输功率控制、专有解调参考信号、正交序列索引的循环移位、上行索引、下行分配索引、信道状态信息请求、信道探测参考信号请求、资源分配类型、预编码信息和层数信息、传输块一的调制编码方式、传输块一的新数据指示、传输块一的冗余版本、传输块二的调制编码方式、传输块二的新数据指示、传输块二的冗余版本。 The information domain of the downlink control information format Y2 includes at least one or a combination of: a carrier indication domain, a resource block allocation, a transmission power control of a physical uplink shared channel, a proprietary demodulation reference signal, and a cyclic shift of an orthogonal sequence index. , uplink index, downlink allocation index, channel state information request, channel sounding reference signal request, resource allocation type, precoding information and layer number information, modulation and coding mode of transport block one, new data indication of transport block one, transport block one The redundancy version, the modulation coding mode of transport block 2, the new data indication of transport block 2, and the redundancy version of transport block 2.

8. 根据权利要求 1所述的方法，其中，在所述传输模式 X是下行传输模式的情况下，在所述传输模式 X下的所述下行控制信息中，当下行控制信道中的循环校验码采用小区无线网络临时标识 C-RNTI加扰时，设置传输模式 X包括： 8. The method according to claim 1, wherein, in the case that the transmission mode X is a downlink transmission mode, in the downlink control information in the transmission mode X, when a cyclic correction is performed in a downlink control channel When the code verification uses the cell radio network temporary identifier C-RNTI scrambling, setting the transmission mode X includes:

在公共搜索空间和所述 C-RNTI定义的用户设备专有搜索空间中，采用所述下行控制信息格式 1A表示单天线端口或者传输分集的传输方式，其中，端口号为端口 0，在所述 C-RNTI定义的用户设备专有搜索空间中，采用所述下行控制信息格式 Y1表示单天线端口的传输方式，端口号为端口 7和 8中任意一个，或者为端口 7、 8、 9和 10中任意一个，或者固定为端口 7; In the public search space and the user equipment-specific search space defined by the C-RNTI, the downlink control information format 1A is used to indicate a single antenna port or a transmission diversity transmission mode, where the port number is port 0, In the user equipment-specific search space defined by the C-RNTI, the downlink control information format Y1 is used to indicate the transmission mode of the single antenna port, and the port number is any one of ports 7 and 8, or ports 7, 8, 9, and 10 Any one of them, or fixed to port 7;

或者，在公共搜索空间中，采用所述下行控制信息格式 1A表示单天线端口或者传输分集的传输方式，其中，端口号为端口 0，在所述 C-RNTI定义的用户设备专有搜索空间中，采用所述下行控制信息格式 Y1表示单天线端口的传输方式，其中，端口号为端口 7和 8中任意一个，或者为端口 7、 8、 9和 10 中任意一个，或者固定为端口 7; Or, in the common search space, the downlink control information format 1A is used to indicate a single antenna port or a transmission diversity transmission mode, where the port number is port 0, in the user equipment-specific search space defined by the C-RNTI. The downlink control information format Y1 is used to indicate a single antenna port transmission mode, where the port number is any one of ports 7 and 8, or is any one of ports 7, 8, 9, and 10, or is fixed to port 7;

或者，在公共搜索空间中，采用所述下行控制信息格式 1A表示单天线端口或者传输分集的传输方式，其中，端口号为端口 0，在所述 C-RNTI定义的用户设备专有搜索空间中，采用所述下行控制信息格式 Y1表示单天线端口或者传输分集的传输方式，其中，端口号为端口 7和 8中任意一个，或者为端口 7、 8、 9和 10中任意一个，或者固定为端口 7。 Or, in the common search space, the downlink control information format 1A is used to indicate a single antenna port or a transmission diversity transmission mode, where the port number is port 0, in the user equipment-specific search space defined by the C-RNTI. Using the downlink control information format Y1 to indicate a single antenna port or The transmission mode of the transmission diversity, wherein the port number is any one of ports 7 and 8, or is any one of ports 7, 8, 9, and 10, or is fixed to port 7.

9. 根据权利要求 8所述的方法，其中，下行控制信息格式 Y1的信息域包括以下至少之一或组合：载波指示域、资源分配头、资源块分配、物理上行控制信道的传输功率控制、下行分配索引、 HARQ进程数、天线端口扰码身份和层数、信道探测参考信号请求、传输块一的调制编码方式和 /或新数据指示和 /或冗余版本；或者，下行控制信息格式 Y1 的信息域包括以下至少之一或组合：载波指示域、资源分配头、资源块分配、调制编码方式、 HARQ进程数、新数据指示、冗余版本、物理上行控制信道的传输功率控制、下行分配索引。 The method according to claim 8, wherein the information domain of the downlink control information format Y1 comprises at least one or a combination of: a carrier indication domain, a resource allocation header, a resource block allocation, a transmission power control of a physical uplink control channel, Downlink allocation index, number of HARQ processes, antenna port scrambling code identity and layer number, channel sounding reference signal request, modulation and coding mode of transport block one, and/or new data indication and/or redundancy version; or, downlink control information format Y1 The information field includes at least one or a combination of: a carrier indication field, a resource allocation header, a resource block allocation, a modulation and coding scheme, a number of HARQ processes, a new data indication, a redundancy version, a transmission power control of a physical uplink control channel, and a downlink allocation. index.

10. 根据权利要求 1所述的方法，其中，下行控制信息格式 Y1的负载与下行控制信息格式 Y2的负载相同。 10. The method according to claim 1, wherein the load of the downlink control information format Y1 is the same as the load of the downlink control information format Y2.

11. 根据权利要求 10所述的方法，其中，当所述下行控制信息格式 Y1的负载与所述下行控制信息格式 Y2的负载相同时，所述下行控制信息格式 Y1的信息域包含区分下行控制信息格式 Y1和 Y2的比特和添加比特，所述下行控制信息格式 Y2的信息域包含区分下行控制信息格式 Y1和 Y2的比特和添加比特。 The method according to claim 10, wherein, when the load of the downlink control information format Y1 is the same as the load of the downlink control information format Y2, the information domain of the downlink control information format Y1 includes a differentiated downlink control. The bits of the information formats Y1 and Y2 and the added bits, the information field of the downlink control information format Y2 contains bits and added bits that distinguish the downlink control information formats Y1 and Y2.

12. 根据权利要求 1所述的方法，其中，在下行控制信息格式 Y1或者下行控制信息格式 Y2中，采用的资源分配比特包括以下至少之一： The method according to claim 1, wherein, in the downlink control information format Y1 or the downlink control information format Y2, the resource allocation bits used include at least one of the following:

所述资源分配比特是 ceil ( log2 ( DD ) +X比特，其中 DL是下行带宽对应的物理资源块数， ceil ( log2 (NDD ) 是资源块的起始位置， X 比特是资源块的数量， X取值为 1或 2或 3 ; The resource allocation bit is ceil (log2 ( DD ) + X bits, where DL is the number of physical resource blocks corresponding to the downlink bandwidth, ceil ( log 2 (NDD ) is the starting position of the resource block, and X bits are the number of resource blocks, X is 1 or 2 or 3;

只采用连续资源分配的方法； Only use continuous resource allocation methods;

采用连续资源分配的方法时，采用资源粒子组代替物理资源块作为最小单位进行表示，分配的资源块数量为资源组包含的资源块数量的倍数； When a method of contiguous resource allocation is adopted, a resource particle group is used instead of a physical resource block as a minimum unit, and the number of allocated resource blocks is a multiple of the number of resource blocks included in the resource group;

采用非连续资源分配方法时，扩大资源块组大小 P的值。 When the discontinuous resource allocation method is adopted, the value of the resource block group size P is expanded.

13. 根据权利要求 1所述的方法，其中，在下行控制信息格式 Y1或者 Y2中，调制编码方式比特数为 2、 3、 4或者 5。 The method according to claim 1, wherein in the downlink control information format Y1 or Y2, the number of modulation coding mode bits is 2, 3, 4 or 5.

14. 一种传输装置，包括： 14. A transmission device comprising:

设置模块，设置为设置传输模式 X；发送模块，设置为通过所述传输模式 X对应的下行控制信息格式向用户设备发送下行控制信息，其中所述下行控制信息格式包括以下至少之一：下行控制信息格式 1A、下行控制信息格式 0、下行控制信息格式 Yl、下行控制信息格式 Υ2。 Setting the module, set to set the transmission mode X; The sending module is configured to send the downlink control information to the user equipment by using the downlink control information format corresponding to the transmission mode X, where the downlink control information format includes at least one of the following: a downlink control information format 1A, a downlink control information format 0, The downlink control information format Y1 and the downlink control information format Υ2.