WO2011134189A1

WO2011134189A1 - Method and device for selecting antenna data transmission mode

Info

Publication number: WO2011134189A1
Application number: PCT/CN2010/073949
Authority: WO
Inventors: 肖华华; 贾晓山; 鲁照华; 朱登魁; 张万帅; 刘锟
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-04-28
Filing date: 2010-06-13
Publication date: 2011-11-03
Also published as: CN102237914B; CN102237914A

Abstract

A method and device for selecting antenna data transmission mode are disclosed by the present invention. In the method, a transmission end determines a data transmission mode adapting for a reception end from a spatial diversity cyclic delay diversity mode and a spatial multiplexing beamforming mode according to the channel state information (S502), and the transmission end transmits antenna data using the determined data transmission mode (S504). The technical scheme of the present invention solves the problem that the data transmission mode can not be selected according to the system channel condition in the related technology, and selects an adapted data transmission mode agilely from the spatial diversity cyclic delay diversity mode or the spatial multiplexing beamforming mode for transmitting data, thereby the link stability is increased and the system throughput is improved.

Description

天线数据发送模式的选择方法及装置技术领域本发明涉及通信领域，具体而言，涉及一种天线数据发送模式的选择方法及装置。背景技术多输入多输出（ Multiple Input Multiple Output, MIMO )是在发送端和接收端分别安置多根天线的通信***。它包括空间分集和空间复用。空间分集一般用来提高链路的稳定性，而空间复用一般用来提高***的吞吐量。波束赋形（Beamforming, BF ) 是基于自适应天线原理，利用天线阵列通过先进的信号处理算法分别对各物理天线加权处理的一种技术。如图 1所示。数据流乘以对应物理天线上的权值后发送出去，所有的物理天线相当于一根虚拟的天线。空间复用和波束赋形结合使用时，叫空间复用波束赋形 TECHNICAL FIELD The present invention relates to the field of communications, and in particular to a method and apparatus for selecting an antenna data transmission mode. BACKGROUND Multiple Input Multiple Output (MIMO) is a communication system in which a plurality of antennas are respectively disposed at a transmitting end and a receiving end. It includes spatial diversity and spatial multiplexing. Space diversity is generally used to improve the stability of the link, and spatial multiplexing is generally used to increase the throughput of the system. Beamforming (BF) is a technique based on the principle of adaptive antenna, which uses antenna arrays to weight each physical antenna by advanced signal processing algorithms. As shown in Figure 1. The data stream is multiplied by the weight on the corresponding physical antenna and sent out. All physical antennas are equivalent to a virtual antenna. Spatial multiplexing beamforming

( Spatial Multiplexing Beamforming, SM + BF ),它增加了数据流的发送个数，以提高吞吐量。它的一种发送端如图 2所示，天线被分成 M个子阵列，每个子阵列经过波束赋形处理，形成一根虚拟天线，多根虚拟天线间构成空间复用形式。循环延迟分集（ Cyclic Delay Diversity, CDD )是正交频分复用（ Orthogonal Frequency Division Multiplexing, OFDM )里常用的一种多天线发送分集方案，它在各个物理天线上发送相同的频域数据并对时域的 OFDM 符号进行不同的循环延迟，以此来获得频域分集增益。其发送端示意图如图 3所示，信源经过信道编码、调制后，经过逆傅立†变换 ( Inverse Fast Fourier Transform,( Spatial Multiplexing Beamforming, SM + BF ), which increases the number of data streams sent to improve throughput. One of its transmitting ends is shown in Figure 2. The antenna is divided into M sub-arrays. Each sub-array is beamformed to form a virtual antenna. The multiple virtual antennas form a spatial multiplexing form. Cyclic Delay Diversity (CDD) is a multi-antenna transmit diversity scheme commonly used in Orthogonal Frequency Division Multiplexing (OFDM). It transmits the same frequency domain data on each physical antenna and The OFDM symbols in the time domain perform different cyclic delays to obtain the frequency domain diversity gain. The schematic diagram of the transmitting end is shown in Figure 3. After the source is channel-coded and modulated, it undergoes inverse Fourier transform (Inverse Fast Fourier Transform,

IFFT )成时 i或数据，并用对应物理天线的循环延迟进行相应的循环延迟后，加循环前缀（ Cyclic Prefix, CP )发送出去。这里， = 1, · · ·, Γχ , Γχ为发送端物理天线数目，一般为 0。整个天线组相当于一根虚拟天线。 CDD和空间分集结合，形成分集增益更大的一种技术，叫空间分集循环延迟分集（Spatial Diversity Cyclic Delay Diversity, SD + CDD )„其中的一种发送端口图 4所示，天线被分成 M个子阵列，每个阵列做 CDD, 形成一才艮虚拟天线，而虚拟天线间构成空间分集。空间分集循环延迟分集在不同虚拟天线上发送的数据流在时域或者频域上可以有冗余。一般来说，空间分集循环延迟分集的分集增益比较大，信噪比一般比较高，可用高阶调制编码方式来提高吞吐量；其覆盖比较大。空间复用波束赋形在不同的虚拟天线上可以发送不同的符号，吞吐量一般比较大，但覆盖比较小，且会受权值的准确性和及时性的影响。无线信道一般是随时间不断变化的，有时使用空间分集循环延迟分集更好，有时使用空间分集循环延迟分集更好。为了提高链路稳定性和***的吞吐量，需要选择不同的数据发送模式以适应变化的信道条件。发明内容针对相关技术中由于缺乏在空间分集循环延迟分集和空间复用波束赋形中选择数据发送模式的方案，无法根据信道条件灵活选择数据发送模式来增加链路稳定性和提升吞吐量的问题而提出本发明，为此，本发明的主要目的在于提供一种改进的天线数据发送模式的选择方法及装置 ,以解决上述问题。根据本发明的一个方面，提供了一种天线数据发送模式的选择方法，包括：发送端根据信道状态信息从空间分集循环延迟分集 SD + CDD模式和空间复用波束赋形 + 模式中确定适合于接收端的数据发送模式；以及发送端使用确定的数据发送模式发送天线数据。根据本发明的另一个方面，提供了一种天线数据发送模式的选择装置，包括：确定模块，用于根据信道状态信息从空间分集循环延迟分集 SD+a)D 模式或空间复用波束赋形 SM + BF模式中确定适合于接收端的数据发送模式；发送模块，用于使用确定的数据发送模式发送数据。通过本发明，发送端居信道状态信息确定空间分集循环延迟分集 SD + CDD模式或空间复用波束赋形 SM + BF模式是适合于接收端的数据发送模式，从而使用适合的数据发送模式发送天线数据。解决了相关技术中无法根据***信道条件，灵活地从 SD + CDD模式或 SM + 模式中选择合适的数据发送模式来发送数据。利用上述技术方案，增加了链路的稳定性和提高了 ***的吞吐量。本发明的其它特征和优点将在随后的说明书中阐述，并且，部分地从说明书中变得显而易见，或者通过实施本发明而了解。本发明的目的和其他优点可通过在所写的说明书、权利要求书、以及附图中所特别指出的结构来实现和获得。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是相关技术中 BF发送端示意图；图 2是相关技术中 SM + BF发送端示意图；图 3是相关技术中 CDD发送端示意图；图 4是相关技术中 SD+CDD发送端示意图；图 5是根据本发明实施例的天线数据发送模式的选择方法的流程图；图 6是根据本发明实施例一的发送模式的选择方法的流程图；图 7是根据本发明实施例二的发送模式的选择方法的流程图；图 8是根据本发明实施例三的发送模式的选择方法的流程图；图 9是根据本发明实施例四的发送模式的选择方法的流程图；图 10是根据本发明实施例五的发送模式的选择方法的流程图；图 11是根据本发明实施例六的发送模式的选择方法的流程图；图 12是根据本发明实施例七的发送模式的选择方法的流程图；图 13是根据本发明实施例八的发送模式的第一选择方法的流程图；图 14是根据本发明实施例八的发送模式的第二选择方法的流程图；图 15是根据本发明实施例九的发送模式的选择方法的流程图；图 16是根据本发明实施例十的发送模式的选择方法的流程图；图 17是根据本发明实施例十一的发送模式的选择方法的流程图；图 18是根据本发明实施例十二的发送模式的选择方法的流程图；图 19是根据本发明实施例十三的发送模式的选择方法的流程图；图 20是根据本发明实施例十四的发送模式的选择方法的流程图；图 21是根据本发明实施例十五的发送模式的选择方法的流程图；图 22是根据本发明实施例十六的发送模式的选择方法的流程图；图 23 是根据本发明实施例十七的天线数据发送模式的选择装置的结构框图。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。无线通信***包括发送端和接收端，本发明实施例中的发送端是用于发送数据或者信息的设备，比如宏基站，微基站等；接收端是用于接收数据或者信息的各类终端，如移动台、手持设备或数据卡等。下面介绍本发明的各个实施例都以该无线通信***为基础予以实施。图 5是根据本发明实施例的天线数据发送模式的选择方法的流程图。如图 5所示，该天线数据发送模式的选择方法包括：确定步骤 S502 : 发送端居信道状态信息从空间分集循环延迟分集 SD + CDD模式和空间复用波束赋形 SM + 模式中确定适合于接收端的数据发送模式；以及发送步骤 S504: 发送端使用确定的数据发送模式发送数据。相关技术中，由于缺乏在 SD + CDD模式和 SM + BF模式中选择数据发送模式的方案，无法根据信道条件灵活选择数据发送模式以增加链路稳定性和提升吞吐量，釆用上述技术方案，可以根据***信道条件，灵活地从 SD + a)D 模式或 + 模式中选择合适的数据发送模式来发送数据，增加了链路的稳定性和提高了***的吞吐量。在无线通信***中，上述信道状态信息可以包括但不限于以下至少之一：权值相关性信息、权值距离信息、信噪比 C/NR、误发率 S£R、以及空间相关性的信息。其中，误发率 S R为误突发率或者误比特率，由接收端反馈给发送端；或者，发送端通过计算得到，包括空间分集循环延迟分集数据发送模式下的或空间复用波束赋形数据发送模式下的 £R™^ , 5£R可以但不限于通过以下方法获得：在判决周期内或判决周期的一个指定小周期内，统计发送端总共发送的突发个数为 M_TOTAL个，对应比特数目为 B_TOTAL比特，自动重传（ Automatic Repeat reQuest, ARQ )或者混合自动重传 ( Hybrid Automatic Repeat reQuest, HARQ ) 第一重传的突发个数为 M_rep个，对应比特数目 B_rep比特，则对应的误突发率为 IFFT) is the time i or the data, and after the corresponding cyclic delay is performed by the cyclic delay of the corresponding physical antenna, the cyclic prefix (Cyclic Prefix, CP) is sent out. Here, = 1, · · ·, Γχ , Γχ is the number of physical antennas at the transmitting end, which is generally 0. The entire antenna group is equivalent to a virtual antenna. CDD and spatial diversity combine to form a technique with greater diversity gain, called Spatial Diversity Cyclic Delay Diversity (SD + CDD ). One of the transmission ports is shown in Figure 4. The antenna is divided into M sub-arrays. Array, each array does CDD, forming a virtual antenna, and virtual day Space diversity is formed between lines. Spatial Diversity Cyclic Delay Diversity Data streams transmitted on different virtual antennas may be redundant in the time or frequency domain. In general, the diversity gain of spatial diversity cyclic delay diversity is relatively large, the signal-to-noise ratio is generally high, and high-order modulation coding can be used to improve throughput; its coverage is relatively large. Spatial multiplex beamforming can transmit different symbols on different virtual antennas. The throughput is generally large, but the coverage is small, and the weight and accuracy of the weights are affected. Wireless channels are generally constantly changing over time, sometimes using spatial diversity cyclic delay diversity is better, and sometimes using spatial diversity cyclic delay diversity is better. In order to improve link stability and system throughput, different data transmission modes need to be selected to adapt to changing channel conditions. SUMMARY OF THE INVENTION In view of the lack of a scheme for selecting a data transmission mode in spatial diversity cyclic delay diversity and spatial multiplexing beamforming in the related art, it is not possible to flexibly select a data transmission mode according to channel conditions to increase link stability and improve throughput. While the present invention has been made, it is a primary object of the present invention to provide an improved method and apparatus for selecting an antenna data transmission mode to solve the above problems. According to an aspect of the present invention, a method for selecting an antenna data transmission mode is provided, including: the transmitting end determining, according to channel state information, from a spatial diversity cyclic delay diversity SD + CDD mode and a spatial multiplexing beamforming + mode The data transmission mode of the receiving end; and the transmitting end transmits the antenna data using the determined data transmission mode. According to another aspect of the present invention, there is provided an apparatus for selecting an antenna data transmission mode, comprising: a determining module, configured to perform cyclic diversity diversity SD+a)D mode or spatial multiplexing beamforming from spatial diversity according to channel state information A data transmission mode suitable for the receiving end is determined in the SM + BF mode; and a transmitting module is configured to transmit data using the determined data transmission mode. According to the present invention, the transmitting end channel state information determines that the spatial diversity cyclic delay diversity SD + CDD mode or the spatial multiplexing beamforming SM + BF mode is suitable for the data transmission mode of the receiving end, thereby transmitting the antenna data using a suitable data transmission mode. . It solves the problem that the related art cannot flexibly select an appropriate data transmission mode from SD + CDD mode or SM + mode to transmit data according to system channel conditions. With the above technical solution, the stability of the link is increased and the throughput of the system is improved. Other features and advantages of the invention will be set forth in the description which follows, and The object and other advantages of the present invention The points may be realized and obtained by the structures specified in the written description, the claims, and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set to illustrate,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, 1 is a schematic diagram of a BF transmitting end in the related art; FIG. 2 is a schematic diagram of a SM + BF transmitting end in the related art; FIG. 3 is a schematic diagram of a CDD transmitting end in the related art; FIG. 4 is a related art SD+CDD transmitting FIG. 5 is a flowchart of a method for selecting an antenna data transmission mode according to an embodiment of the present invention; FIG. 6 is a flowchart of a method for selecting a transmission mode according to an embodiment of the present invention; FIG. 7 is a flowchart according to an embodiment of the present invention. FIG. 8 is a flowchart of a method for selecting a transmission mode according to Embodiment 3 of the present invention; FIG. 9 is a flowchart of a method for selecting a transmission mode according to Embodiment 4 of the present invention; 10 is a flowchart of a selection method of a transmission mode according to Embodiment 5 of the present invention; FIG. 11 is a flowchart of a selection method of a transmission mode according to Embodiment 6 of the present invention; FIG. 12 is a transmission mode according to Embodiment 7 of the present invention; FIG. 13 is a flowchart of a first selection method of a transmission mode according to Embodiment 8 of the present invention; FIG. 14 is a transmission mode according to Embodiment 8 of the present invention; Flowchart of a second selection method; FIG. 15 is a flowchart of a method of selecting the transmission mode according to a ninth embodiment of the present invention; FIG. 16 is a flowchart of a method of selecting the transmission mode according to Embodiment 10 of the present invention; Figure 17 is a flowchart of a method for selecting a transmission mode according to Embodiment 11 of the present invention; Figure 18 is a flowchart of a method for selecting a transmission mode according to Embodiment 12 of the present invention; Figure 19 is a thirteenth embodiment of the present invention 20 is a flowchart of a method for selecting a transmission mode according to Embodiment 14 of the present invention; and FIG. 21 is a flowchart of a method for selecting a transmission mode according to Embodiment 15 of the present invention; Figure 22 is a flowchart showing a method of selecting a transmission mode according to Embodiment 16 of the present invention; Figure 23 is a block diagram showing the configuration of an apparatus for selecting an antenna data transmission mode according to Embodiment 17 of the present invention. 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 wireless communication system includes a transmitting end and a receiving end. The transmitting end in the embodiment of the present invention is a device for transmitting data or information, such as a macro base station, a micro base station, etc., and the receiving end is a type of terminal for receiving data or information. Such as mobile stations, handheld devices or data cards. The various embodiments of the present invention are described below as being implemented on the basis of the wireless communication system. FIG. 5 is a flowchart of a method of selecting an antenna data transmission mode according to an embodiment of the present invention. As shown in FIG. 5, the method for selecting the antenna data transmission mode includes: determining step S502: the channel state information of the transmitting end is determined from the spatial diversity cyclic delay diversity SD + CDD mode and the spatial multiplexing beamforming SM + mode. a data transmission mode at the receiving end; and a transmitting step S504: the transmitting end transmits the data using the determined data transmission mode. In the related art, due to the lack of a scheme for selecting a data transmission mode in the SD+CDD mode and the SM+BF mode, the data transmission mode cannot be flexibly selected according to channel conditions to increase link stability and improve throughput, and the above technical solution is adopted. According to the system channel conditions, it is possible to flexibly select the appropriate data transmission mode from SD + a) D mode or + mode to transmit data, which increases the stability of the link and improves the throughput of the system. In the wireless communication system, the channel state information may include, but is not limited to, at least one of: weight correlation information, weight distance information, signal to noise ratio C/NR, false alarm rate S£R, and spatial correlation. information. The error occurrence rate SR is a false burst rate or a bit error rate, which is fed back to the transmitting end by the receiving end; or the transmitting end is calculated, including spatial diversity cyclic delay diversity data transmission mode or spatial multiplexing beamforming The £RTM^, 5£R in data transmission mode can be obtained by, but not limited to, by the following method: In the specified period of the decision period or the decision period, the total number of bursts sent by the statistical sender is M _TOTAL The number of corresponding bits is B _TOTAL bit, Automatic Repeat reQuest (ARQ) or Hybrid Automatic Repeat reQuest (HQQ). The number of bursts of the first retransmission is M _rep , and the number of corresponding bits B _Rep bit, the corresponding false burst rate

BER = M_rep /M_total , 或者误发率皿 = ^ / ^。其中，信息信噪比 CINR包括空间分集循环延迟分集数据发送模式下的 CINR^CDD或空间复用波束赋形数据发送模式下的 CINR^_F。它可以是接收端计算并反馈给发送端的，也可以是发送端自己计算得到的。其中，上述空间相关性由信道相关矩阵的条件数表示的，的计算过程如下： BER = M _rep /M _total , or false rate = ^ / ^. The information signal to noise ratio CINR includes CINR^CDD in the spatial diversity cyclic delay diversity data transmission mode or CINR^ _{F in the} spatial multiplexing beamforming data transmission mode. It can be calculated by the receiving end and fed back to the sender, or it can be calculated by the sender itself. Wherein, the above spatial correlation is represented by the condition number of the channel correlation matrix, and the calculation process is as follows:

( 1 )初始化先前信道相关性矩阵 R_PRE , 在选定的周期 T内重复执行步骤 ( 2 ) 直到周期 T结束。 ( 2 )在周期 T内，才艮据时间顺序，计算当前用户在帧结构中用来计算信道相关性矩阵的载波集合上的信道相关性矩阵： R = a_kH^H (k、*H(k、, 这里， N_E 表示上述载波集合上包含载波的数目， (1) Initializing the previous channel correlation matrix R _PRE , repeating step ( 2 ) in the selected period T until the end of the period T. (2) In the period T, the channel correlation matrix on the carrier set used by the current user in the frame structure to calculate the channel correlation matrix is calculated according to the chronological order: R = a _k H ^H (k, *H( k, where N _E represents the number of carriers included in the above carrier set,

H(k) 和 ≥ 0分别是上述载波集合中第 A个子载

波的信道系数矩阵和比例系数。为第 ·根发送天线到根接收天线间的第 k个载波上的信道系数， _/ = 1,… = 1,…， N ,Μ为实际物理发送天线数目或者虚拟天线数目， ^为接收天线数目。先前信道相关性矩阵更新为 R_Pre = pR_Pm +(l-p)R, p为常量且 ^{Q≤ ≤ 1}。 (3 ) 计算先前信道相关矩阵的条件数： i = f(R_Pre), 其中，是一个关于相关性矩阵的处理，优选地为： H(k) and ≥ 0 are the Ath sub-carriers in the above carrier set, respectively

The channel coefficient matrix and the scale factor of the wave. The channel coefficient on the kth carrier between the antenna and the root receiving antenna, _/ = 1,... = 1,..., N , Μ is the actual number of physical transmitting antennas or the number of virtual antennas, ^ is the receiving antenna number. The previous channel correlation matrix is updated to R _Pre = pR _Pm + (lp) R, p is constant and ^{Q ≤ ≤ 1} . (3) Calculate the condition number of the previous channel correlation matrix: i = f(R _Pre ), where is a process for the correlation matrix, preferably:

_/(D = ^^1或者 = 或者肌 x_n(RpJ _/( D = ^^1 or = or muscle x _{n (RpJ}

HR_Pre) (^R _PrJ 其中， ^ 表示矩阵 ^的迹，上标 H表示对矩阵求共厄转置。 , HR _P re) ( ^R _Pr J where ^ denotes the trace of the matrix ^, and the superscript H denotes the common transposition of the matrix.

^A^n(^RPre)分别为矩阵的最大和最小特征值。下面通过其他实施例对上述方法进行详细介绍，以下实施例涵盖发送端根据权值相关性信息、权值距离信息、信噪比 CINR、误发率 S R或空间相关性的信息，以及多种信道状态信息相结合来确定适合于接收端的数据发送模式。实施例一在本实施例中，发送端根据权值相关性信息确定适合于接收端的数据发送模式，在该实施例中，设置统计变量的门限值为 Num\。判决周期为 T, 单位为帧。图 6是根据本发明实施例一的发送模式的选择方法的流程图。如图 6 所示，对发送端月艮务的每个接收端在每个周期内进行如下处理以选择多天线技术模式：步骤 S602, 初始化先前权值相关性 WR_Pre = , 其中， "为大于 0的常数；统计变量^^ = 0；步骤 S604、根据帧的时间顺序，发送端获得权值^ ,根据帧的时间顺序, 发送端计算接收端下一个最新权值 f ₂ , 则接收端对应的相邻两次权值相关性为 ^ = f(W„W₂) , 其中， / 是对权值 w„w₂ 的处理，优选地为 f(W^W₂)=\\W^W₂ II , 其中， H为矩阵的共轭转置， *fT₂ II表示矩阵 W_X ^H * W₂的范数。并将先前权值相关性更新为 WR_Pre = pWR_Pre + (1- p)WR_Cur , ρ为常量且 0≤ ≤1。且将权值 ^₂的值赋给 ^；将 WR_Pre和配置的门限值 T_r比较，如果 f R_Pre > T_r , 则统计量 Ns加 1；反复执行步骤 S604直到周期 T结束或者

Numi。步骤 S606, 如 Ns >Nur , 选择 + 数据发送模式，否则，选择 SD + CDD数据发送模式。步骤 S608, 用选定的数据发送模式发送数据。实施例二在本实施例中，发送端才艮据权值距离信息确定适合于接收端的数据发送模式，在该实施例中，设置统计变量的门限值为 Mm₂。判决周期为 T, 单位为帧。图 7是根据本发明实施例二的发送模式的选择方法的流程图。如图 7 所示，对发送端月艮务的每个接收端在每个周期内进行如下处理以选择多天线技术模式：步骤 S702, 初始化先前权值距离 D_Pre 这里， "为大于 0 的常数；统计变量 N52 = 0; 步骤 S704,根据帧的时间顺序，发送端获得权值，根据帧的时间顺序，发送端计算接收端下一个最新权值 ^ , 则接收端对应的相邻两次权值的距离为 D_Cur=d(JV,W₂ 这里，是对权值 , ^₂的处理，优选地为： d(W_l,W₂) = A_m W_lW_l ^H-W₂W₂ ^H), ₂)

^A ^n( ^R Pre) are the maximum and minimum eigenvalues of the matrix, respectively. The foregoing method is described in detail by other embodiments. The following embodiments cover the information of the sender according to weight correlation information, weight distance information, signal to noise ratio CINR, false alarm rate SR or spatial correlation, and multiple channels. The status information is combined to determine a data transmission mode suitable for the receiving end. Embodiment 1 In this embodiment, the transmitting end determines a data transmission mode suitable for the receiving end according to the weight correlation information. In this embodiment, the threshold value of the statistical variable is set to Num\. The decision period is T and the unit is frame. FIG. 6 is a flowchart of a method for selecting a transmission mode according to Embodiment 1 of the present invention. As shown in FIG. 6, each receiving end of the transmitting end performs the following processing in each period to select the multi-antenna technology mode: Step S602, initializing the previous weight correlation WR _Pre = , where "is greater than a constant of 0; a statistical variable ^^ = 0; Step S604, according to the time sequence of the frame, the sender obtains the weight ^, according to the time sequence of the frame, The sender calculates the next latest weight f ₂ at the receiving end, and the correlation between the two adjacent weights corresponding to the receiving end is ^ = f(W„W ₂ ), where / is the processing of the weight w„w ₂ Preferably, f(W^W ₂ )=\\W^W ₂ II , where H is a conjugate transpose of the matrix, and *fT ₂ II represents a norm of the matrix W _X ^H * W ₂ . The previous weight correlation is updated to WR _Pre = pWR _Pre + (1- p) WR _Cur , ρ is constant and 0 ≤ ≤1. And assigning the value of the weight ^ ₂ to ^; comparing WR _Pre with the configured threshold value T _r , if f R _Pre > T _r , the statistic Ns is incremented by 1; repeating step S604 until the end of the period T or

Numi. In step S606, if Ns > Nur, select + data transmission mode, otherwise, select SD + CDD data transmission mode. Step S608, transmitting data in the selected data transmission mode. Embodiment 2 In this embodiment, the transmitting end determines the data transmission mode suitable for the receiving end according to the weight distance information. In this embodiment, the threshold value of the statistical variable is set to Mm ₂ . The decision period is T and the unit is frame. FIG. 7 is a flowchart of a method for selecting a transmission mode according to Embodiment 2 of the present invention. As shown in FIG. 7, each receiving end of the transmitting end performs the following processing in each period to select the multi-antenna technology mode: Step S702, initializing the previous weight distance D _Pre here, "is a constant greater than 0 The statistical variable N52 = 0; Step S704, according to the time sequence of the frame, the transmitting end obtains the weight, according to the time sequence of the frame, the transmitting end calculates the next latest weight ^ of the receiving end, and the neighboring right corresponding to the receiving end The value of the distance is D _Cur = d (JV, W ₂ here, is the weight, ^ ₂ processing, preferably: d (W _l , W ₂ ) = A _m W _l W _l ^{H -} W ₂ W ₂ ^H ), ₂ )

Τχ ，Μ Τχ ,Μ

Ρ Ρ

(W_XW_X ^H -W₂W₂ ^H)表示矩阵 f^f^ -W₂W₂ ^H 的最大特征值， W_x = 为所述当前接收端的波束赋形权

(W _X W _X ^H -W ₂ W ₂ ^H ) represents the maximum eigenvalue of the matrix f^f^ -W ₂ W ₂ ^H , and W _x = is the beam shaping right of the current receiving end

值， ^W ， /为所述当前接收端不同时刻第才艮发送天线到第 /个波束的权值分量； /η = 1,2,···,Τχ, 1 = \,2,···,Μ , Γχ为所述发送端的所有物理天线的个数， Μ为所述发送端的所有天线发送的所有波束的个数， ρ为大于 0的常数；将先前权值距离更新为 D_Pre = pD_Pre + (1 _ p)D_Cur , 为常量且 0≤ ≤1。且将权值 ₂的值赋给 JV。将 D_Pre和门限值 D_r比较，如果 _Pre > D_r , 则统计量 Nsi加 1；反复执行步骤 S704, 直到周期 T结束或者 N ≥Nwm₂ , Nwm₂为配置的门限值。步骤 S706, 如果 N^≥Nwm₂, 选择数据发送模式 SD + a)D, 否则，选择数据发送模式 SM + BF; 步骤 S708, 用选定的数据发送模式发送数据。实施例三在本实施例中，发送端根据发送速率确定适合于接收端的数据发送模式，其中，发送速率由 SD + CDD模式下的信噪比

+ ^模式下的信噪比 (腿信息确定。图 8是根据本发明实施例三的数据发送模式的选择方法的流程图。如图 8所示，发送端对其艮务的所有接收端进行如下处理：步骤 S802 , 计算该接收端在空间分集循环延迟分集下的信噪比The value, ^W , / is the weight component of the antenna to the first beam at different times of the current receiving end; /η = 1,2,···,Τχ, 1 = \,2,··· , Μ , Γχ is the number of all physical antennas at the transmitting end, Μ is the number of all beams transmitted by all the antennas of the transmitting end, ρ is a constant greater than 0; and the previous weight distance is updated to D _Pre = pD _Pre + (1 _ p)D _Cur , which is constant and 0 ≤ ≤1. And assign the value of weight ₂ to JV. D _{Pre is} compared with the threshold D _r . If _Pre > D _r , the statistic Nsi is incremented by one; step S704 is repeatedly executed until the end of the period T or N ≥ Nwm ₂ , and Nwm ₂ is the configured threshold. In step S706, if N^≥Nwm ₂ , the data transmission mode SD + a)D is selected, otherwise, the data transmission mode SM + BF is selected; in step S708, the data is transmitted in the selected data transmission mode. Embodiment 3 In this embodiment, the transmitting end determines a data transmission mode suitable for the receiving end according to the transmission rate, where the transmission rate is determined by the signal to noise ratio in the SD + CDD mode.

+ ^ mode signal to noise ratio (leg information is determined. FIG. 8 is a flowchart of a method of selecting a data transmission mode according to Embodiment 3 of the present invention. As shown in FIG. 8, the transmitting end performs the following processing on all receiving ends of the service: Step S802, calculating the signal-to-noise ratio of the receiving end under the spatial diversity cyclic delay diversity

C賺 SOCDD , 并用它查表格，找到适合该信噪比下的调制编码方式对应的调制

, 重复 R 并计算空间分集循环延迟分集据发送模式下的发送速率为 ^SDCDD = ^ASDCDD ^X ^ SDCDD ^X ^SDCDD I ^SDCDD；其中为空间分集循环延迟分集时的 MIMO编码速率；步骤 S 804 , 计算接收端在空间复用波束赋形数据发送模式下的 CINR 确定其调制编码方式所对应的调制阶数 M 编码速率 ^ 编码重复次数 R ；并计算空间复用波束赋形数据发送模式下的发送速率 V _F = a _F xP _F /R ；其中" 为空间复用时的 MIMO编码速率。步骤 S806 比较 V , 如 ¥ 选择空间分集循环延迟分集模式，否则选择空间复用波束赋形模式。步骤 S808 , 用选定的数据发送模式发送该接收端的数据。实施例四在本实施例中发送端根据空间相关性的信息确定适合于接收端的数据发送模式，图 9是才艮据本发明实施例四的发送模式的选择方法的流程图。如图 9所示，对发送端服务的每个接收端在每个周期内进行如下处理以选择多天线技术模式：步骤 S902 , 初始化先前信道相关性矩阵 R_Pre , 在选定的周期 T内重复执行步 4聚 S904直到周期 T结束；步骤 S904 , 在周期 T内，才艮据时间顺序，计算当前用户在帧结构中用来计算信道相关性矩阵的载波集合上的信道相关性矩阵： R = ^ _kH^H (k) *H(k) , k=\ 这里， N_e 表示上述载波集合上包含载波的数目 C earn SOCDD, and use it to check the table to find the modulation corresponding to the modulation and coding mode under the SNR.

, repeating R and calculating the spatial diversity cyclic delay diversity, the transmission rate in the transmission mode is ^SDCDD = ^A SDCDD ^X ^ SDCDD ^X ^SDCDD I ^SDCDD; where is the MIMO coding rate in the spatial diversity cyclic delay diversity; step S 804 Calculating the CINR of the receiving end in the spatial multiplexing beamforming data transmission mode, determining the modulation order M coding rate ^ coding repetition number R corresponding to the modulation and coding mode; and calculating the transmission in the spatial multiplexing beamforming data transmission mode The rate V _F = a _F xP _F /R ; where "is the MIMO encoding rate at the time of spatial multiplexing. Step S806 compares V, such as ¥ selects the spatial diversity cyclic delay diversity mode, otherwise selects the spatial multiplexing beamforming mode. Step S808 The data of the receiving end is sent in the selected data transmission mode. Embodiment 4 In this embodiment, the transmitting end determines a data transmission mode suitable for the receiving end according to the spatial correlation information, and FIG. 9 is based on the fourth embodiment of the present invention. Flowchart of the selection method of the transmission mode. As shown in FIG. 9, each receiving end of the service of the transmitting end performs the following processing in each cycle to Optional multi-antenna technology modes: step S902, the initialization of the previous channel correlation matrix R _Pre, repeat step 4 Poly S904 until the period T ends at a selected period T; step S904, in the period T, only Gen according to time sequence, Calculate the channel correlation matrix on the set of carriers used by the current user to calculate the channel correlation matrix in the frame structure: R = ^ _k H ^H (k) * H(k) , k=\ Here, N _e represents the number of carriers included in the above carrier set

H(k) 和 ≥ 0分别是上述载波集合中第 A个子载

H(k) and ≥ 0 are the Ath sub-carriers in the above carrier set, respectively

波的信道系数矩阵和比例系数。为第 ·根发送天线到根接收天线间的第 k个载波上的信道系数， _/ = 1,… = 1,…， N ,Μ为实际物理发送天线数目或者虚拟天线数目， ^为接收天线数目；这里，用来计算信道相关性矩阵的载波集合，可以是接收端发送上行数据对应的子信道里的时频二维数据子载波，或者上行导频对应的子载波或者给接收端发送的下行数据对应的子信道里的数据子载波。先前信道相关性矩阵更新为 R_Pre = R_Pre +(l- )R , 为常量且 0≤ ≤1。步骤 S906, 计算先前信道相关性矩阵的条件数： 3 = f(R_Pre、, 其中， /是一个关于相关性矩阵 R^的处理，优选地为： The channel coefficient matrix and the scale factor of the wave. The channel coefficient on the kth carrier between the antenna and the root receiving antenna, _/ = 1,... = 1,..., N , Μ is the actual number of physical transmitting antennas or the number of virtual antennas, ^ is the receiving antenna Here, the carrier set used to calculate the channel correlation matrix may be a time-frequency two-dimensional data subcarrier in a subchannel corresponding to the uplink data, or a subcarrier corresponding to the uplink pilot or sent to the receiving end. The data subcarrier in the subchannel corresponding to the downlink data. The previous channel correlation matrix is updated to R _Pre = R _Pre +(l- )R , which is constant and 0 ≤ ≤1. Step S906, calculating the condition number of the previous channel correlation matrix: 3 = f(R _Pre , where / is a process regarding the correlation matrix R^, preferably:

_/(D = ^^1或者 _f(R_PrJ = ^_PrJ或者肌 _e)=A (R_Pre) _/( D = ^^1 or _f( R _Pr J = ^ _Pr J or muscle _e) = A (R _Pre )

HR_Pre) (^R _PrJ 其中， tr( )表示矩阵的迹，上标 ^表示对矩阵求共厄转置。 ™_χ( , m_n(R_Pre)分别为矩阵 R_Pre的最大和最小特征值；步骤 S908, 如果。，选择空间复用波束赋形模式，否则选择空间分集循环延迟分集模式；步骤 S910, 用选定的数据发送模式发送该接收端的数据。实施例五在本实施例中，发送端才艮据误发率 S R确定适合于接收端的数据发送模式，图 10是根据本发明实施例五的发送模式的选择方法的流程图。如图 10 所示，发送端预先设定门限值3£ ，对其艮务的所有接收端进行如下处理：步骤 S1002, 在判决周期内，获得接收端反馈的 S£R , 或利用 HARQ或 ARQ计算当前数据发送模式下的腿；步骤 S1004, 如 BER BER^ , 选择空间复用波束赋形模式更优，否则选择选择空间分集循环延迟分集模式更优。步骤 S 1006 , 用选定更优的数据发送模式发送数据。实施例六在本实施例中，发送端根据误发率 s R , SD+a)D模式下的信噪比 CINR 确定适合于接收端的数据发送模式，图 11 是根据本发明实施例六的发送模式的选择方法的流程图。如图 11所示，发送端预先设定信噪比门限值 SDCDD _ THX和门限值误发率门限值 , 对其服务的所有接收端进行 ^口下处理：步骤 S1102, 对当前使用空间分集循环延迟分集模式的接收端，获得 S + C D模式下的

CINRsncnn > SDCDD THl, 则确定空间复用波束赋形模式更优；否则，确定空间分集循环延迟分集模式更优。步骤 S1104, 对当前使用空间复用波束赋形模式的接收端，获得接收端反馈的 BER , 或利用 HARQ或 ARQ计算当前数据发送模式下的 BER 如 BER BEI^, 选择空间分集循环延迟分集模式更优，否则选择空间复用波束赋形模式更优。步骤 S 1106: 用选定更优的数据发送模式发送数据。实施例七在本实施例中，发送端根据误发率 s£R , SD+a)D模式下的信噪比 CINR 以及 SM + 模式下的信噪比 CINR , 确定适合于接收端的数据发送模式，图 12 是根据本发明实施例七的发送模式的选择方法的流程图。如图 12 所示，发送端预先设定区间门限值 [SDCDD _TH\, SDCDD TH1]和 HR _P re) ( ^R _Pr J where tr( ) denotes the trace of the matrix, and the superscript ^ denotes the common transposition of the matrix. TM _χ ( , m _n (R _Pre ) are the maximum and minimum features of the matrix R _Pre respectively Step S908, if,, the spatial multiplexing beamforming mode is selected, otherwise the spatial diversity cyclic delay diversity mode is selected; in step S910, the data of the receiving end is sent in the selected data transmission mode. Embodiment 5 In this embodiment The sender determines the data transmission mode suitable for the receiving end according to the false transmission rate SR. 10 is a flowchart of a method for selecting a transmission mode according to Embodiment 5 of the present invention. As shown in FIG. 10, the transmitting end presets the threshold value 3£, and performs processing on all receiving ends of the service: Step S1002, in the decision period, obtain the S£R fed back by the receiving end, or use HARQ or The ARQ calculates the leg in the current data transmission mode; step S1004, such as BER BER^, selects the spatial multiplexing beamforming mode to be better, otherwise the selection of the spatial diversity cyclic delay diversity mode is better. In step S1006, the data is sent in the selected better data transmission mode. Embodiment 6 In this embodiment, the transmitting end determines a data transmission mode suitable for the receiving end according to the signal to noise ratio CINR in the false alarm rate s R , SD+a)D mode, and FIG. 11 is a transmission according to Embodiment 6 of the present invention. Flowchart of the mode selection method. As shown in FIG. 11, the transmitting end presets the signal-to-noise ratio threshold value SDCDD_THX and the threshold error rate threshold value, and performs processing on all receiving ends of the service: Step S1102, for current use Receiver of spatial diversity cyclic delay diversity mode, obtained in S + CD mode

CINRsncnn > SDCDD THl, then it is determined that the spatial multiplexing beamforming mode is better; otherwise, it is better to determine the spatial diversity cyclic delay diversity mode. Step S1104: Obtaining a BER that is currently fed back by the beamforming mode, or obtaining a BER fed back by the receiving end, or calculating a BER in a current data transmission mode by using HARQ or ARQ, such as BER BEI^, and selecting a spatial diversity cyclic delay diversity mode. Excellent, otherwise the spatial multiplexing beamforming mode is better. Step S1106: The data is sent in the selected better data transmission mode. Embodiment 7 In this embodiment, the signal-to-noise ratio of the transmitting end according to the false alarm rate s£R, SD+a)D mode The CINR and the signal-to-noise ratio CINR in the SM+ mode determine a data transmission mode suitable for the receiving end, and FIG. 12 is a flowchart of a method of selecting a transmission mode according to Embodiment 7 of the present invention. As shown in Figure 12, the sender presets the interval threshold [SDCDD _TH\, SDCDD TH1] and

[SMBF _ TH\ SMBF _ TH2] 。其中， Q < SDCDD _TH < SDCDD TH 2 , 0 < SMBF _TH\≤ SMBF _ΤΗ2 , 发送端对其月艮务的所有接收端进行如下处理：步骤 S 1202, 当前的数据发送方式为空间分集循环延迟分集模式的接收端；计算该模式下的

< SDCDD— Tm ,则确定 S + C D 模式更优；如果 CINRSDCDD > SDCDD _ΤΗ2 , 则确定 SM + 更优；如果 [SMBF _ TH\ SMBF _ TH2]. Where Q < SDCDD _TH < SDCDD TH 2 , 0 < SMBF _TH\ ≤ SMBF _ ΤΗ 2 , the transmitting end performs the following processing on all receiving ends of its monthly service: Step S 1202, the current data transmission mode is spatial diversity cyclic delay diversity Receiver of the mode; calculate the mode

< SDCDD—Tm , it is determined that the S + CD mode is better; if CINRSDCDD > SDCDD _ΤΗ2, it is determined that SM + is better;

SDCDD _ TH\≤ CINR_SDCDD≤ SDCDD _ΤΗ2 ,则执行实施例三至实施例六中任一项确定数据发送模式的方法，来确定空间分集循环延迟分集模式或空间复用波束赋形模式更优。步骤 S 1204, 当前的数据发送方式为空间复用波束赋形模式的接收端；计算该模式下的 C/NR ，如 CINRs < SMBF _ΤΗ\ , 则确定 SD + a)D模式更优；如果

SMBF— TH2 , 则确定 SM + BF 更优；如果 SMBF _TH\≤ CINR ≤ SMBF _TH2 , 则执行实施例三至实施例六中任一项确定数据发送模式的方法，来确定空间分集循环延迟分集模式或空间复用波束赋形模式更优。步骤 S 1206, 用选定更优的数据发送模式发送数据。实施例八本实施例是实施例三至实施例七的一个优 4 变形，在本实施例中，上述确定步 4聚还可以进一步包括以下处理： SDCDD_TH\ _{≤CINR SDCDD} ≤ SDCDD _ΤΗ2, then the method of determining the data transmission mode according to any one of Embodiments 3 to 6 is performed to determine that the spatial diversity cyclic delay diversity mode or the spatial multiplexing beamforming mode is better. Step S1204, the current data transmission mode is the receiving end of the spatial multiplexing beamforming mode; calculating C/NR in the mode, such as CINRs < SMBF _ΤΗ\, determining that the SD + a) D mode is better;

SMBF_TH2, then it is determined that SM + BF is better; if SMBF _TH\≤ CINR ≤ SMBF _TH2, then the method of determining the data transmission mode according to any one of Embodiments 3 to 6 is performed to determine the spatial diversity cyclic delay diversity mode. Or the spatial multiplexing beamforming mode is better. Step S1206, transmitting data in a selected better data transmission mode. Embodiment 8 This embodiment is a modification of the third embodiment to the seventh embodiment. In this embodiment, the determining step 4 may further include the following processing:

( 1 )设置第二判决周期 T2, T2的单位是帧； (1) setting a second decision period T2, the unit of T2 is a frame;

( 2 ) 在第二判决周期中设置 L个判决点，其中， L为大于 1的整数； (2) setting L decision points in the second decision period, where L is an integer greater than one;

( 3 ) 在每个判决点执行上面提到的任一项确定步骤的方案，来确定 SD + CDD模式或 SM + 模式是适合于接收端的数据发送模式，并统计 SD + a)D模式是适合于接收端的数据发送模式的次数 N1 ,或者统计 SM BF 模式是适合于接收端的数据发送模式的次数 N2; (3) At each decision point, the scheme of any of the above-mentioned determination steps is performed to determine SD + CDD mode or SM + mode is suitable for the data transmission mode of the receiving end, and the SD + a) D mode is the number of times N1 suitable for the data transmission mode of the receiving end, or the statistical SM BF mode is suitable for the data transmission mode of the receiving end. Number of times N2;

( 4 )如果 N1/L大于或等于预定值 Tr, 确定 SD + CDD模式是适合于接收端的数据发送模式，否则，确定 + 模式是适合于接收端的数据发送模式； (4) If N1/L is greater than or equal to the predetermined value Tr, it is determined that the SD + CDD mode is a data transmission mode suitable for the receiving end; otherwise, the determining + mode is a data transmitting mode suitable for the receiving end;

( 5 ) 如果 N2/L大于或等于预定值 Tr, 确定 + 模式是适合于接收端的数据发送模式，否则，确定 SD + CDD模式是适合于接收端的数据发送模式。上述数据发送模式确定方法的一个优选的方案如下：在判决时刻 = 1且为周期的整数倍时做判决，发送端设定判决周期 τ⁷ , 单位是帧；对其艮务的所有接收端进行如下处理：在总帧数是的整数倍时，釆用实施例三至实施例七中的任何一个方法选择一个数据发送模式为空间分集循环延迟分集或者空间复用波束赋形。并在下个判决周期内使用该模式传输数据。进入下一个判决周期。上述数据发送模式确定方法的另一个优选的方案如下：图 13 是根据本发明实施例八的发送模式的第一选择方法的流程图。如图 13所示，设定门限值 Tr和判决周期 Γ ,在判决周期内设定 J个判决时刻（判决点；)，对其艮务的所有接收端进行如下处理：步骤 S 1302, ¾ V SDCDD _ NUM = 0；步骤 S 1304, 在每个判决时刻执行实施例三至实施例七任一确定步骤的方案，如果空间分集循环延迟分集模式更优，则(5) If N2/L is greater than or equal to the predetermined value Tr, it is determined that the + mode is a data transmission mode suitable for the receiving end, otherwise, it is determined that the SD + CDD mode is a data transmission mode suitable for the receiving end. A preferred solution of the foregoing data transmission mode determining method is as follows: when the decision time is 1 and is an integer multiple of the period, the transmitting end determines the decision period τ ⁷ , the unit is a frame; and all the receiving ends of the service are performed. The following processing: When the total number of frames is an integer multiple, the method of any one of the third embodiment to the seventh embodiment is used to select a data transmission mode as spatial diversity cyclic delay diversity or spatial multiplexing beamforming. This mode is used to transfer data in the next decision cycle. Enter the next decision cycle. Another preferred aspect of the above data transmission mode determining method is as follows: Fig. 13 is a flowchart of a first selection method of a transmission mode according to Embodiment 8 of the present invention. As shown in FIG. 13, the threshold value Tr and the decision period Γ are set, and J decision times (decision points;) are set in the decision period, and all receiving ends of the service are processed as follows: Step S1302, 3⁄4 V SDCDD _ NUM = 0; Step S 1304, performing the scheme of any of the determining steps of Embodiment 3 to Embodiment 7 at each decision time, if the spatial diversity cyclic delay diversity mode is better,

SDCDD _ NUM = SDCDD _ NUM + 1；步骤 S 1306 , 重复执行步骤 S 1304 直到周期结束或者 SDCDD NUMIL≥Tr ; 步骤 S 1308, 如 SDCDD— NUM I L≥Tr , 选择空间分集循环延迟分集模式更优，否则选择空间复用波束赋形模式更优。步骤 S 1310,在下一个周期内用选择更优的数据发送模式进行发送数据。进入下一个判决周期。上述数据发送模式确定方法的另一个优选的方案如下：图 14 是根据本发明实施例八的发送模式的第二选择方法的流程图。如图 14所示，设定门限值 7 和判决周期 Γ ,在判决周期内设定 J个判决时刻（判决点；)，对其艮务的所有接收端进行如下处理：步骤 S 1402, 初始化 SMBF _NUM = 0；步 4聚 S 1404, 在每个判决时刻执行实施例三至实施例七任一确定步 4聚的方案，如果空间复用波束赋形模式更优，则 SMBF _NUM = SMBF _NUM + 步骤 S 1406 , 重复执行步骤 S 1404 直到周期结束或者 SMBF _NUM I L≥Tr；步骤 S 1408,如 SMBF _NUM I L > Tr ,选择空间复用波束赋形模式更优，否则选择空间分集循环延迟分集模式更优。步骤 S 1410,在下一个周期内用选择更优的数据发送模式进行发送数据。进入下一个判决周期。实施例九在本实施例中，发送端根据误发率 S R判断数据发送速率趋势，并根据速率趋势确定 SD + CDD模式或 SM + BF模式是适合于接收端的数据发送模式。 SDCDD _ NUM = SDCDD _ NUM + 1; Step S 1306, repeating step S 1304 until the end of the cycle or SDCDD NUMIL ≥ Tr; Step S 1308, such as SDCDD_NUM IL≥Tr, the spatial diversity cyclic delay diversity mode is better, otherwise the spatial multiplexing beamforming mode is better. In step S1310, data is transmitted by selecting a better data transmission mode in the next cycle. Enter the next decision cycle. Another preferred aspect of the above data transmission mode determining method is as follows: Figure 14 is a flowchart of a second selection method of a transmission mode according to Embodiment 8 of the present invention. As shown in FIG. 14, the threshold value 7 and the decision period Γ are set, and J decision times (decision points;) are set in the decision period, and all receiving ends of the service are processed as follows: Step S 1402, Initialization SMBF_NUM = 0; Step 4 gathers S 1404, and performs the scheme of any of the third to seventh determination steps at each decision time. If the spatial multiplexing beamforming mode is better, SMBF_NUM = SMBF_NUM + Step S 1406, repeating step S 1404 until the end of the cycle or SMBF _NUM IL ≥ Tr; Step S 1408, such as SMBF _NUM IL > Tr, selecting the spatial multiplexing beamforming mode is better, otherwise selecting the spatial diversity cyclic delay diversity mode better. In step S1410, data is transmitted by selecting a better data transmission mode in the next cycle. Enter the next decision cycle. Embodiment 9 In this embodiment, the transmitting end determines the data transmission rate trend according to the error rate SR, and determines whether the SD + CDD mode or the SM + BF mode is a data transmission mode suitable for the receiving end according to the rate trend.

在本实施例中，首先通过以下方法设置一个速率表：将使用空间分集循环延迟分集时不同调制编码方式对应的传输速率和使用空间复用波束赋形时不同调制编码方式对应的传输速率进行排序，形成一个表格，并规定传输速率增大的方向为速率上升的方向，而传输速率减小的方向为速率下降的方向。表格中的每一行包括数据发送模式、调制编码方式、发送速率和唯一的索引 ID(Index)。一个例子如表格 1 所示，表格中，按发送速率从小到大排列。编码重复次数 R = l , 空间分集循环延迟分集时" = 1 , 空间复用波束赋形时 " = 2。调制方式包括 QPSK( Quadrature Phase Shift Keying ), QAM( Quadrature Amplitude Modulation ), 16QAM、 64QAM, 编码速率包括 1/2、 2/3、 3/4、 5/6。表格 1 In this embodiment, a rate table is first set by the following method: When using spatial diversity cyclic delay diversity, the transmission rate corresponding to different modulation and coding modes and when using spatial multiplexing beamforming The transmission rates corresponding to different modulation and coding modes are sorted to form a table, and the direction in which the transmission rate increases is specified as the direction in which the rate increases, and the direction in which the transmission rate decreases is the direction in which the rate decreases. Each row in the table includes a data transmission mode, a modulation and coding scheme, a transmission rate, and a unique index ID (Index). An example is shown in Table 1. In the table, the transmission rate is arranged from small to large. The number of coding repetitions is R = l, and the space diversity cyclic delay diversity is " = 1 , when spatially multiplexed beamforming" = 2. Modulation methods include QPSK (Quarature Phase Shift Keying), QAM (Quarature Amplitude Modulation), 16QAM, 64QAM, and encoding rates include 1/2, 2/3, 3/4, and 5/6. Table 1

在本实施例中，发送端下面月艮务了多个接收端。在发送端端配置判决周期^7\ Γ的单位是帧， ^是判决周期内的小周期个数。配置 S R的门限值为 BER^ , 统计量的门限值为 N,, N₂ , 是正整数，且 N,≤N₂。配置速率表，如表格 1所示。图 15是根据本发明实施例九的发送模式的选择方法的流程图。如图 15 所示，发送端对其艮务的所有接收端进行如下处理：步骤 S 1502 , 如'果第一次调整，初始化/ £) = 1 , 即，选择空间分集循环延迟分集数据发送模式和调制编码法方式为 QPSK1/2传输数据，否则 //)为上一次调整的值， = 1。步骤 S 1504 , 在 Q -1)Γ + 1到 iT的周期内统计发送端总共发送的突发个数为 M_totcd个，对应比特数目为 B_total比特， HARQ或者 AQR第一重传的突发个数为 M_rep个，对应比特数目 B_rep比特，则误比特率 BER = B_rep I B_total。步骤 S1506, i = i + l; 如果 £Κ≤ £¾ , N_s=N_s+\。步骤 S1508, 重复步骤 S1504 ~ S1506直到判决周期结束或 ≥ N₂。步骤 S1510, 如果 ≥N₂, 判断该接收端传输速率趋势是上升的， H) = min(H) + l,14)；如 N_s<N_x , 判断是下降的， H) = max(l, — 1)；口果 N, < N, < N₂ , 保持数据传输速率不变， ID = ID。步骤 S 1512 , 用步骤 S 1510选择的 ID对应的数据发送模式发送数据。需要说明的是，本实施例用到的方法也可以用误突发率为 BER = M IM_t。_tal 实现。实施例十在本实施例中，发送端根据误发率 S R判断数据发送速率趋势，并根据速率趋势确定 SD + CDD模式或 SM + BF模式是适合于接收端的数据发送模式。在本实施例中，发送端下面月艮务了多个接收端。在发送端端配置判决周期^7\ Γ的单位是帧， ^是判决周期内的小周期个数。配置 S R的门限值为 BER^, 统计量的门限值为 N,,N₂ , 是正整数，且 N,≤N₂。配置速率表，如表格 1所示。图 16是根据本发明实施例十的发送模式的选择方法的流程图。如图 16 所示，发送端对其艮务的所有接收端进行如下处理：步骤 S1602, 如果第一次调整，初始化/ £) = 1, 即，选择空间分集循环延迟分集数据发送模式和调制编码法方式为 QPSK1/2传输数据，否则 //)为上一次调整的值， = 1。步骤 S1604, 在（ -1)Γ + 1到 Γ的周期内统计发送端总共发送的突发个数为 M_totcd个，对应比特数目为 B_total比特， HARQ或者 AQR第一重传的突发个数为 M_rep个，对应比特数目 B_rep比特，则误比特率 BER = B_rep I B_total。步骤 S1606, i = i + l; 如果 £Κ≥ £¾ , N_s=N_s+\。步骤 S1608, 重复步 4聚 S 1604 ~S 1606直到判决周期结束或 ≥ N₂。步骤 S1610, 如果 ≥N₂, 判断该接收端传输速率趋势是下降的， ID = max(l, ID -I)；如 N_s<N_x , 判断是上升的， ID = mm(ID + ； ^口果 N, < N, < N₂ , 保持数据传输速率不变， ID = ID。步骤 S1612, 用步 4聚 S1610选择的 /£>对应的数据发送模式发送数据。需要说明的是，本实施例用到的方法也可以用误突发率为 BER = M IM_t。_tal 实现。实施例十一在本实施例中，发送端根据误发率 S R判断数据发送速率趋势，并根据速率趋势确定 SD + CDD模式或 SM + BF模式是适合于接收端的数据发送模式。在本实施例中，发送端下面月艮务了多个接收端。在发送端端配置判决周期^7\ Γ的单位是帧， ^是判决周期内的小周期个数。配置 S R的门限值为 BER^, 统计量的门限值为 N,,N₂ , 是正整数，且 N,≤N₂。配置速率表，如表格 1所示。图 17 是根据本发明实施例十一的发送模式的选择方法的流程图。如图 17所示，发送端对其艮务的所有接收端进行如下处理：步骤 S1702, 如果第一次调整，初始化/ £) = 1, 即，选择空间分集循环延迟分集数据发送模式和调制编码法方式为 QPSK1/2传输数据，否则 //)为上一次调整的值， = 1。步骤 S1704, 在（ -1)Γ + 1到 Γ的周期内统计发送端总共发送的突发个数为 M_totcd个，对应比特数目为 B_total比特， HARQ或者 AQR第一重传的突发个数为 M_rep个，对应比特数目 B_rep比特，则误比特率 BER = B_rep I B_total。步骤 S1706, 如 ΒΕ ΒΕΙ^, N_s=N_s+\。步骤 S 1708, i = i + l; = BER。步骤 S1710, 重复步骤 S1704 ~ S1708直到判决周期结束或 ≥ N₂。步骤 S1712, 如果 ≥N₂, 判断该接收端传输速率趋势是上升的， H) = min(H) + l,14)；如 N_s<N_x , 判断是下降的， H) = max(l, — 1)；口果 N, < N, < N₂ , 保持数据传输速率不变， ID = ID。步骤 S1714, 用步 4聚 S1712选择的 /£>对应的数据发送模式发送数据。需要说明的是，本实施例用到的方法也可以用误突发率为層 = MJM ,来实现。实施例十二在本实施例中，发送端才艮据信噪比 C/NR判断数据发送速率趋势，并才艮据速率趋势确定 SD + CDD模式或 SM + BF模式是适合于接收端的数据发送模式。在本实施例中，发送端下面月艮务了多个接收端。在发送端端配置判决周期^7\ T⁷的单位是帧， ^是判决周期内的小周期个数。配置 C/NR的门限值为 CINR^ , 统计量的门限值为 N,,N₂ , 是正整数，且 N,≤N₂。配置速率表，如表格 1所示。图 18 是根据本发明实施例十二的发送模式的选择方法的流程图。如图 18所示，发送端对其艮务的所有接收端进行如下处理：步骤 S1802, 如果第一次调整，初始化/ £) = 1, 即，选择空间分集循环延迟分集数据发送模式和调制编码法方式为 QPSK1/2传输数据，否则 //)为上一次调整的值。 = 1。步骤 S 1804 , 在判决时刻 iT , 获得当前数据发送模式下的 CINR。步骤 S 1806, i = i + l; 如 CINR^CINR^, N_s=N_s+\。步骤 S1808, 重复步 4聚 S1804 S1806, 直到判决周期结束或 ≥ N₂。步骤 S1810, 如果 ≥N₂, 判断该接收端传输速率趋势是上升的， H) = min(H) + l,14)；如 N_s<N_x , 判断是下降的， H) = max(l, — 1)；口果 N,<N,<N₂, 保持数据传输速率不变， ID = ID。步骤 S 1812 , 用步骤 S 1810选择的 ID对应的数据发送模式发送数据。实施例十三在本实施例中，发送端才艮据信噪比 C/NR判断数据发送速率趋势，并才艮据速率趋势确定 SD + CDD模式或 SM + BF模式是适合于接收端的数据发送模式。发送端下面艮务了多个接收端。在发送端端配置判决周期 N_Tr, τ⁷的单位是帧，是判决周期内的小周期个数。配置 C/NR的门限值为统计量的门限值为

, 是正整数，且 ,≤Ν₂。配置速率表，如表格 1所示。图 19 是根据本发明实施例十三的发送模式的选择方法的流程图。如图 19所示，发送端对其艮务的所有接收端进行如下处理：步骤 S1902, 如果第一次调整，初始化/ £) = 1, 即，选择空间分集循环延迟分集数据发送模式和调制编码法方式为 QPSK1/2传输数据，否则 //)为上一次调整的值。 = 1。步骤 S 1904 , 在判决时刻 iT , 获得当前数据发送模式下的 CINR。步骤 S 1906, i = i + l; 如 CINR^CINR^, N_s=N_s+\。步骤 S1908, 重复步 4聚 S 1904 ~S 1906, 直到判决周期结束或 ≥ N₂。步骤 S1910, 如果 ≥N₂, 判断该接收端传输速率趋势是下降的， ID = max(l, ID -I)；如 N_s<N_x , 判断是上升的， H) = min(H) + l,14)； ^口果 N,<N,<N₂, 保持数据传输速率不变， ID = ID。步骤 S1912, 用步骤 S1910选择的对应的数据发送模式发送数据。实施例十四在本实施例中，发送端才艮据信噪比 C/NR判断数据发送速率趋势，并才艮据速率趋势确定 SD + CDD模式或 SM + BF模式是适合于接收端的数据发送模式。发送端下面艮务了多个接收端。在发送端端配置判决周期 N_Tr, τ⁷的单位是帧，是判决周期内的小周期个数。配置 C/NR的门限值为统计量的门限值为 N,,N₂ , 是正整数，且 ,≤N₂。配置速率表，如表格 1所示。图 20 是根据本发明实施例十四的发送模式的选择方法的流程图。如图In this embodiment, the transmitting end operates a plurality of receiving ends in the following month. The unit in which the decision period ^7\ 配置 is configured at the transmitting end is a frame, and ^ is the number of small periods in the decision period. SR is configured threshold BER ^, statistic threshold is N ,, N _2, is a positive integer, and N, ≤N _2. Configure the rate table as shown in Table 1. Figure 15 is a flowchart of a method of selecting a transmission mode according to Embodiment 9 of the present invention. As shown in Figure 15, the sender performs the following processing on all receivers of its service: Step S 1502, such as 'first adjustment, initialization / £) = 1, ie, select spatial diversity cyclic delay diversity data transmission mode And the modulation coding method is to transmit data to QPSK1/2, otherwise //) is The value of the last adjustment, = 1. Step S1504, in the period of Q -1) Γ + 1 to iT, the total number of bursts sent by the transmitting end is M _totcd , the number of corresponding bits is B _total bits, and the HARQ or AQR first retransmitted burst The number is M _rep , and the bit number B _rep bit, then the bit error rate BER = B _rep IB _total . Step S1506, i = i + l; if £ Κ ≤ £3⁄4 , N _s = N _s +\. In step S1508, steps S1504 to S1506 are repeated until the end of the decision period or ≥ N ₂ . Step S1510, if ≥ N ₂ , it is judged that the transmission rate trend of the receiving end is rising, H) = min(H) + l, 14); if N _s <N _x , the judgment is falling, H) = max(l , — 1); Moutine N, < N, < N ₂ , keep the data transfer rate constant, ID = ID. In step S1512, the data is transmitted in the data transmission mode corresponding to the ID selected in step S1510. It should be noted that the method used in this embodiment can also use the error rate BER = M IM _t . _{Tal is} achieved. Embodiment 10 In this embodiment, the transmitting end determines the data transmission rate trend according to the error rate SR, and determines that the SD + CDD mode or the SM + BF mode is a data transmission mode suitable for the receiving end according to the rate trend. In this embodiment, the transmitting end operates a plurality of receiving ends in the following month. The unit in which the decision period ^7\ 配置 is configured at the transmitting end is a frame, and ^ is the number of small periods in the decision period. The threshold of the configured SR is BER^, the threshold of the statistic is N, and N ₂ is a positive integer, and N, ≤ N ₂ . Configure the rate table as shown in Table 1. Figure 16 is a flowchart of a method of selecting a transmission mode according to Embodiment 10 of the present invention. As shown in Figure 16, the sender performs the following processing on all receivers of its service: Step S1602, if the first adjustment, initialization / £) = 1, that is, selecting the spatial diversity cyclic delay diversity data transmission mode and the modulation coding method is QPSK1/2 transmission data, otherwise //) is the last adjusted value, = 1. Step S1604, the in (-1) Γ + Gamma] within the period of a burst count total number of the transmitting side is transmitted _M totcd number corresponding to the number of bits B _total bits, the HARQ retransmission of the first or AQR a burst The number is M _rep , corresponding to the number of bits B _rep bits, then the bit error rate BER = B _rep IB _total . Step S1606, i = i + l; if £Κ≥ £3⁄4, N _s =N _s +\. Step S1608, repeating step 4 to gather S 1604 ~ S 1606 until the end of the decision period or ≥ N ₂ . Step S1610, if ≥ N ₂ , it is judged that the transmission rate trend of the receiving end is decreased, ID = max(l, ID - I); if N _s < N _x , the judgment is rising, ID = mm (ID + ; ^ Moutine N, < N, < N ₂ , keep the data transmission rate unchanged, ID = ID. Step S1612, send data in the data transmission mode corresponding to /4> selected by step S1610. It should be noted that this implementation The method used in the example can also be implemented by using the error rate BER = M IM _t . _tal . In the embodiment, the transmitting end determines the data transmission rate trend according to the error rate SR, and determines according to the rate trend. The SD + CDD mode or the SM + BF mode is a data transmission mode suitable for the receiving end. In this embodiment, the transmitting end operates a plurality of receiving ends in the following month. The unit of the decision period ^7\ 配置 is configured at the transmitting end. Frame, ^ is the number of small periods in the decision period. The threshold for configuring SR is BER^, the threshold for statistics is N,, N ₂ , is a positive integer, and N, ≤ N ₂ . As shown in Table 1. Figure 17 is a flowchart of a method of selecting a transmission mode according to Embodiment 11 of the present invention. As shown in FIG. 17, the transmitting end performs the following processing on all the receiving ends of the service: Step S1702, if the first adjustment, initialization / £) = 1, that is, selecting the spatial diversity cyclic delay diversity data transmission mode and modulation coding The method is to transmit data for QPSK1/2, otherwise //) is the value of the last adjustment, = 1. Step S1704, in the period of (-1) Γ + 1 to 统计, the total number of bursts sent by the transmitting end is M _totcd , the number of corresponding bits is B _total bits, and the HARQ or AQR first retransmitted bursts The number is M _rep , corresponding to the number of bits B _rep bits, then the bit error rate BER = B _rep IB _total . Step S1706, such as ΒΕ ΒΕΙ ^, N _s = N _s +\. Step S 1708, i = i + l; = BER. In step S1710, steps S1704 to S1708 are repeated until the end of the decision period or ≥ N ₂ . Step S1712, if ≥N _2, determining that the receiver end of the transmission rate trend is up, H) = min (H) + l, 14); as N _s <N _x, determination is down, H) = max (l , — 1); Moutine N, < N, < N ₂ , keep the data transfer rate constant, ID = ID. In step S1714, the data is transmitted in the data transmission mode corresponding to the selected data set in step S1712. It should be noted that the method used in this embodiment can also be implemented by using the error burst rate layer = MJM. Embodiment 12 In this embodiment, the transmitting end determines the data transmission rate trend according to the signal to noise ratio C/NR, and determines whether the SD + CDD mode or the SM + BF mode is suitable for the data transmission of the receiving end according to the rate trend. mode. In this embodiment, the transmitting end operates a plurality of receiving ends in the following month. Configure the decision week at the sending end The unit of period ^7\ T ⁷ is the frame, and ^ is the number of small periods in the decision period. The C/NR threshold is set to CINR^, the statistic threshold is N,, N ₂ is a positive integer, and N, ≤ N ₂ . Configure the rate table as shown in Table 1. Figure 18 is a flowchart of a method of selecting a transmission mode according to Embodiment 12 of the present invention. As shown in FIG. 18, the transmitting end performs the following processing on all the receiving ends of the service: Step S1802, if the first adjustment, initialization / £) = 1, that is, selecting the spatial diversity cyclic delay diversity data transmission mode and modulation coding The method is to transmit data for QPSK1/2, otherwise //) is the value of the last adjustment. = 1. Step S 1804, at the decision time iT, obtain the CINR in the current data transmission mode. Step S 1806, i = i + l; such as CINR^CINR^, N _s = N _s +\. Step S1808, repeating step 4 to gather S1804 S1806 until the end of the decision period or ≥ N ₂ . Step S1810, if ≥ N ₂ , it is determined that the transmission rate trend of the receiving end is rising, H) = min(H) + l, 14); if N _s <N _x , the judgment is falling, H) = max(l , — 1); Moutine N, <N, <N ₂ , keep the data transmission rate unchanged, ID = ID. Step S1812: Transmit data by using the data transmission mode corresponding to the ID selected in step S1810. Embodiment 13 In this embodiment, the transmitting end determines the data transmission rate trend according to the signal to noise ratio C/NR, and determines whether the SD + CDD mode or the SM + BF mode is suitable for the data transmission of the receiving end according to the rate trend. mode. There are multiple receivers under the sender. The decision period N _T r is configured at the transmitting end, and the unit of τ ⁷ is a frame, which is the number of small periods in the decision period. Configure the C/NR threshold as the statistic threshold.

, is a positive integer, and, ≤ Ν ₂ . Configure the rate table as shown in Table 1. Figure 19 is a flow chart showing a method of selecting a transmission mode according to Embodiment 13 of the present invention. As shown in FIG. 19, the transmitting end performs the following processing on all receiving ends of its service: Step S1902, if the first adjustment, initialization / £) = 1, that is, selecting the spatial diversity cyclic delay diversity data transmission mode and modulation coding The method is to transmit data for QPSK1/2, otherwise //) is the value of the last adjustment. = 1. Step S 1904, at the decision time iT, obtain the CINR in the current data transmission mode. Step S 1906, i = i + l ; as _{CINR ^ CINR ^, N s =} N s + \. Step S1908, repeating step 4 to gather S 1904 ~ S 1906 until the end of the decision period or ≥ N ₂ . Step S1910, if ≥ N ₂ , it is determined that the transmission rate trend of the receiving end is decreasing, ID = max(l, ID -I); if N _s <N _x , the judgment is rising, H) = min(H) + l, 14); ^ 口果N, <N, <N ₂ , keep the data transmission rate unchanged, ID = ID. Step S1912, transmitting data by using the corresponding data transmission mode selected in step S1910. Embodiment 14 In this embodiment, the transmitting end determines the data transmission rate trend according to the signal to noise ratio C/NR, and determines whether the SD + CDD mode or the SM + BF mode is suitable for the data transmission of the receiving end according to the rate trend. mode. There are multiple receivers under the sender. The decision period N _T r is configured at the transmitting end, and the unit of τ ⁷ is a frame, which is the number of small periods in the decision period. The threshold value for configuring the C/NR threshold is N, N ₂ , which is a positive integer, and ≤ N ₂ . Configure the rate table as shown in Table 1. Figure 20 is a flowchart of a method of selecting a transmission mode according to Embodiment 14 of the present invention. As shown

20所示，发送端对其艮务的所有接收端进行如下处理：步骤 S2002, 如果第一次调整，初始化/ £) = 1, 即，选择空间分集循环延迟分集数据发送模式和调制编码法方式为 QPSK1/2传输数据，否则 //)为上一次调整的值。 = 1。步骤 S2004 , 在判决时刻 iT , 获得当前数据发送模式下的 CINR。步骤 S2006, 如 CINR^CINR^, N_s=N_s+\。步骤 S2008, i = i + \; CINR^=CINR。步 4聚 S2010, 重复步 4聚 S2004~S2008, 直到判决周期结束或 ≥ N₂。步骤 S2012, 如果 ≥N₂, 判断该接收端传输速率趋势是上升的， H) = min(H) + l,14)；如 N_s<N_x , 判断是下降的， H) = max(l, — 1)；口果 N,<N,<N₂, 保持数据传输速率不变， ID = ID。步骤 S2014 , 用步骤 S2012选择的 ID对应的数据发送模式发送数据。实施例十五在本实施例中，信道状态信息分为两类，一类是与权值相关的权值类信息，另一类是非权值类信息，其中，权值类信息包括：权值相关性信息或权值巨离信息，非权值类信息至包括以下至少之一：信噪比 CINR、误发率 BER、空间相关性的信息。在本实施例中，发送端下面月艮务了多个接收端。在发送端端配置模式选择算法所需要的门限值及其各种初始化值。图 21 是根据本发明实施例十五的发送模式的选择方法的流程图。如图 21 所示，发送端在每个判决周期内对每个接收端进行如下操作，以选择数据发送模式发送数据：步骤 S2102, 用权值类信息（即釆用实施例一或实施例二提供的方法）判决适合接收端的数据发送模式，如果选择了 SD+a)D模式，那么确定选择20, the transmitting end performs the following processing on all the receiving ends of the service: Step S2002, if the first adjustment, initialization / £) = 1, that is, selecting the spatial diversity cyclic delay diversity data transmission mode and the modulation coding method Transfer data for QPSK1/2, otherwise //) The value of one adjustment. = 1. In step S2004, at the decision time iT, the CINR in the current data transmission mode is obtained. Step S2006, such as CINR^CINR^, N _s =N _s +\. Step S2008, i = i + \; CINR^ = CINR. Step 4 gathers S2010, repeats step 4 to gather S2004~S2008 until the end of the decision period or ≥ N ₂ . Step S2012, if ≥ N ₂ , it is judged that the transmission rate trend of the receiving end is rising, H) = min(H) + l, 14); if N _s <N _x , the judgment is decreased, H) = max(l , — 1); Moutine N, <N, <N ₂ , keep the data transmission rate unchanged, ID = ID. In step S2014, the data is transmitted in the data transmission mode corresponding to the ID selected in step S2012. Embodiment 15 In this embodiment, the channel state information is divided into two categories, one is a weight class information related to a weight, and the other is a non-weight class information, wherein the weight class information includes: a weight Correlation information or weighted macro information, non-weighted class information to at least one of the following: signal to noise ratio CINR, false alarm rate BER, spatial correlation information. In this embodiment, the transmitting end operates a plurality of receiving ends in the following month. The threshold value required by the mode selection algorithm and its various initialization values are configured at the transmitting end. Figure 21 is a flow chart showing a method of selecting a transmission mode according to Embodiment 15 of the present invention. As shown in FIG. 21, the transmitting end performs the following operations on each receiving end to select the data sending mode to send data in each decision period: Step S2102, using the weight class information (ie, using the first embodiment or the second embodiment) The method provided) determines the data transmission mode suitable for the receiving end. If the SD+a)D mode is selected, then the selection is determined.

SD + a)D模式为最终的数据发送模式，并执行步骤 S2106。否则执行步骤 S2104。步骤 S2104, 用非权值类信息（即釆用实施例三至实施例十四提供的任一种方法）从数据发送模式 SD + a)D或 + 中确定适合接收端的最终的数据发送模式。并执行步 4聚 S2106。步骤 S2106 , 用选定的数据发送模式发送数据。实施例十^ c 在本实施例中，信道状态信息分为两类，一类是与权值相关的权值类信息，另一类是非权值类信息，其中，权值类信息包括：权值相关性信息或权值巨离信息，非权值类信息至包括以下至少之一：信噪比 CINR、误发率 BER、空间相关性的信息。在本实施例中，发送端下面月艮务了多个接收端。在发送端端配置模式选择算法所需要的门限值及其各种初始化值。图 22 是根据本发明实施例十六的发送模式的选择方法的流程图。如图 22 所示，发送端在每个判决周期内对每个接收端进行如下操作，以选择数据发送模式发送数据：步骤 S2202 , 用非权值类信息（即釆用实施例三至实施例十四提供的任一种方法）判决适合使用的数据发送模式，如果选择了 SD + CZ)D模式，那么确定选择 SD + a)D模式为最终的数据发送模式，并执行步骤 S2206。否则执行步骤 S2204。步骤 S2204 , 用权值类信息（即釆用实施例一或实施例二提供的方法）从数据发送模式 SD + CDD SM + BF确定该接收端的最终的数据发送模式。并执行步骤 S2206。步骤 S2206 , 用选定的数据发送模式发送数据。实施例十七在本实施例中，提供一种天线数据发送模式的选择装置，图 23 是根据实施例十七的天线数据发送模式的选择装置的结构框图。该天线数据发送模式的选择装置包括：确定模块 10，发送模块 20。确定模块 10 ,用于根据信道状态信息从空间分集循环延迟分集 SD+a)D 模式或空间复用波束赋形 SM + BF模式中确定适合于接收端的数据发送模式；发送模块 20 , 用于使用确定的数据发送模式发送天线数据。釆用上述装置，可以居***信道状态信息，灵活地选择数据发送模式为空间分集循环延迟分集或空间复用波束赋形来发送数据。从而增加了链路的稳定性和提高了***的吞吐量。在无线通信***中 ,上述信道状态信息可以包括但不限于以下至少之一：权值相关性信息、权值距离信息、信噪比 C/NR、误发率 S£R、以及空间相关性的信息。其中， S R为误突发率或者误发率，由接收端反馈给发送端；或者，发送端通过计算得到，具体计算方法在上面已经提到，此处不再赞述。其中，信息信噪比 CINR包括空间分集循环延迟分集数据发送模式下的 CINR^CDD或空间复用波束赋形数据发送模式下的 CINR^_F。它可以是接收端计算并反馈给发送端的，也可以是发送端自己计算得到的。其中，上述空间相关性由信道相关矩阵的条件数表示的，的计算过程也在上面已经提到，此处不再赘述。优选地，确定模块 10可以包括以下至少之一：第一确定单元 101、第二确定单元 102、第三确定单元 103、第四确定单元 104以及第五确定单元 105。第一确定单元 101 , 用于在信道状态信息包括权值相关性信息的情况下，定适合于接收端的数据发送模式；第二确定单元 102 , 用于在信道状态信息包括权值距离信息的情况下，根据统计一个判决周期内权值距离实时值大于距离门限的次数 Nsi , 确定适合于接收端的数据发送模式；第三确定单元 103 , 用于在信道状态信息包括权噪比 CINR的情况下，根据噪比 CINR分别确定 SD + CDD模式下的发送速率 V_SDCDD以 SM + BF模式下的发送速率^ g_F , 选择^ ^ ^与^ ^中确定较大者作为适合于接收端的数据发送模式；第四确定单元 104 , 用于在信道状态信息包括空间相关性的信息，其中，空间相关性由信道相关矩阵的条件数表示的情况下，判断是否大于条件数门限值。，以确定适合于接收端的数据发送模式；第五确定单元 105 , 用于在信道状态信息包括误发率 S£R的情况下，判断 BER 否小于误发率门限值 BER , 以确定适合于接收端的数据发送模式。优选地，确定模块 10还可以包括以下至少之一：第六确定单元 106、第七确定单元 107、第八确定单元 108以及第九确定单元 109。第六确定单元 106 , 用于在信道状态信息包括信噪比 CINR和误发率 BER 的情况下，确定适合于接收端的数据发送模式，第六确定单元包括：第一 SD + CDD模式子单元 1062 , 用于对使用 SD + a)D模式的接收端，获取 SD + CDD模式下的 CINR , 并判断 CINR 是否大于信噪比门限值 SDCDD THI , 以确定适合于接收端的数据发送模式；第一 + 模式子单元 1064 , 用于对使用 + 模式的接收端，确 SM + BF模式下的 BER , 并判断 BER 是否大于误发率门限值 , 以确定适合于接收端的数据发送模式；第七确定单元 107 , 用于在信道状态信息包括信噪比 CINR、空间相关性的信息以及误发率的情况下，确定适合于接收端的数据发送模式，第七确定单元包括：第二 SD + CDD模式子单元 1072 , 对使用 SD + a)D模式的接收端，设置第一门限区间 [SDCDD _ TH\ SDCDD _TH2] , 如果 CINRSDCDD < SDCDD _ THl , 则确定 SD + CDD 模式是适合于接收端的数据发送模式，如果 CINRSDCDD > SDCDD _ TH2 , 则确定 SM + BF是适合于接收端的数据发送模式，如果 SDCDD _ THl≤ CINR_SDCDD≤ SDCDD _ TH2 ,则触发第三确定单元 103至第六确定单元 106中的任意之一确定适合于接收端的数据发送模式；第二 + 模式子单元 1074 , 对使用 + 模式的接收端，设置第二门 Ρ艮区间 [SMBF _ THl, SMBF TH2] , 口果 CINR < SMBF _ ΤΗ\ , 则确定 SD + CDD模式是适合于接收端的数据发送模式，如果 C/NR SMBF _ TH2 , 则确定 SM BF 是适合于接收端的数据发送模式，如果 SMBF _TH\≤ CINR^≤ SMBF _ TH2 , 则触发第三确定单元 103至第六确定单元 106中的任意之一确定适合于接收端的数据发送模式；第八确定单元 108 , 用于在判决周期中设置 L个判决点，其中， L为大于等于 1的整数；在每个判决点触发第三确定单元 103至第七确定单元 107 中的任意之一确定适合于接收端的数据发送模式，根据统计的 SD + CDD模式是适合于接收端的数据发送模式的次数 N1 , 或者根据统计的 + 模式是适合于接收端的数据发送模式的次数 N2,确定适合于接收端的最终数据发送模式；第九确定单元 109, 用于在判决周期内，判断数据发送速率趋势，并根据数据发送速率趋势确定适合于接收端的数据发送模式。综上所述，通过本发明的上述实施例，提供的天线数据发送模式的选择方案，可以根据***信道状态信息（例如，信道条件和应用场景的变化），灵活地选择数据发送模式为空间分集循环延迟分集和空间复用波束赋形来发送数据。从而增加了链路的稳定性和提高了***的吞吐量。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^"神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。 The SD + a) D mode is the final data transmission mode, and step S2106 is performed. Otherwise, step S2104 is performed. Step S2104, determining the final suitable for the receiving end from the data transmission mode SD + a)D or + by using the non-weighted class information (ie, using any of the methods provided in Embodiment 3 to Embodiment 14) Data transmission mode. And perform step 4 to gather S2106. Step S2106: Send data in the selected data transmission mode. Embodiment 10 ^ c In this embodiment, the channel state information is divided into two categories, one is a weight class information related to a weight, and the other is a non-weight class information, wherein the weight class information includes: Value correlation information or weight macro information, non-weight value information to at least one of the following: signal to noise ratio CINR, false alarm rate BER, spatial correlation information. In this embodiment, the transmitting end operates a plurality of receiving ends in the following month. The threshold value required by the mode selection algorithm and its various initialization values are configured at the transmitting end. Figure 22 is a flow chart showing a method of selecting a transmission mode according to Embodiment 16 of the present invention. As shown in FIG. 22, the transmitting end performs the following operations on each receiving end in each decision period to select a data transmission mode to transmit data: Step S2202, using non-weighted class information (ie, using the third embodiment to the embodiment) Any of the methods provided by the fourteenth) decides a data transmission mode suitable for use, and if the SD + CZ) D mode is selected, it is determined that the SD + a) D mode is selected as the final data transmission mode, and step S2206 is performed. Otherwise, step S2204 is performed. In step S2204, the final data transmission mode of the receiving end is determined from the data transmission mode SD + CDD SM + BF by using the weight class information (ie, the method provided by the first embodiment or the second embodiment). And step S2206 is performed. Step S2206: Send data in the selected data transmission mode. Embodiment 17 In this embodiment, a device for selecting an antenna data transmission mode is provided, and FIG. 23 is a block diagram showing a configuration of a device for selecting an antenna data transmission mode according to Embodiment 17. The selection device of the antenna data transmission mode includes: a determination module 10, and a transmission module 20. a determining module 10, configured to determine, according to channel state information, a data transmission mode suitable for the receiving end from the spatial diversity cyclic delay diversity SD+a)D mode or the spatial multiplexing beamforming SM+BF mode; the sending module 20 is configured to use The determined data transmission mode transmits antenna data. With the above device, the system channel state information can be selected, and the data transmission mode can be flexibly selected to transmit data for spatial diversity cyclic delay diversity or spatial multiplexing beamforming. This increases the stability of the link and increases the throughput of the system. In the wireless communication system, the channel state information may include, but is not limited to, at least one of: weight correlation information, weight distance information, signal to noise ratio C/NR, false alarm rate S£R, and spatial correlation. information. Wherein, SR is the error burst rate or the false alarm rate, which is fed back to the transmitting end by the receiving end; or the transmitting end is calculated, and the specific calculation method has been mentioned above, and is not mentioned here. The information signal to noise ratio CINR includes CINR^CDD in the spatial diversity cyclic delay diversity data transmission mode or CINR^ _{F in the} spatial multiplexing beamforming data transmission mode. It can be calculated by the receiving end and fed back to the sender, or it can be calculated by the sender itself. The calculation process of the spatial correlation represented by the condition number of the channel correlation matrix is also mentioned above, and details are not described herein again. Preferably, the determining module 10 may include at least one of the following: a first determining unit 101, a second determining unit 102, a third determining unit 103, a fourth determining unit 104, and a fifth determining unit 105. The first determining unit 101 is configured to: when the channel state information includes the weight correlation information, determine a data transmission mode suitable for the receiving end; the second determining unit 102 is configured to: when the channel state information includes the weight distance information The third determining unit 103 is configured to: when the channel state information includes a weight-to-noise ratio (CINR), the channel determining information includes a weight-to-noise ratio (CINR), where the channel state information includes a weight-to-noise ratio (CINR), According to the noise ratio CINR, the transmission rate V _SDCDD in the SD + CDD mode is respectively determined by the transmission rate in the SM + BF mode ^ g _F , and the larger one is determined as ^ ^ ^ and ^ ^ as the data transmission mode suitable for the receiving end; a fourth determining unit 104, configured to include spatial correlation information in the channel state information, where the spatial correlation is represented by a condition number of the channel correlation matrix, determining whether the condition is greater than a condition Number of thresholds. And determining a data transmission mode suitable for the receiving end; the fifth determining unit 105, configured to determine, if the channel state information includes the false alarm rate S£R, whether the BER is less than the false alarm rate threshold BER, to determine The data transmission mode of the receiving end. Preferably, the determining module 10 may further include at least one of the following: a sixth determining unit 106, a seventh determining unit 107, an eighth determining unit 108, and a ninth determining unit 109. The sixth determining unit 106 is configured to determine, in a case where the channel state information includes a signal to noise ratio CINR and a false transmission rate BER, a data transmission mode suitable for the receiving end, where the sixth determining unit includes: the first SD + CDD mode subunit 1062 , for receiving the SD + a) D mode, obtaining the CINR in the SD + CDD mode, and determining whether the CINR is greater than the signal to noise ratio threshold SDCDD THI to determine a data transmission mode suitable for the receiving end; The mode sub-unit 1064 is configured to determine the BER in the SM + BF mode for the receiving end using the + mode, and determine whether the BER is greater than the false alarm rate threshold to determine a data transmission mode suitable for the receiving end; The unit 107 is configured to determine, in a case where the channel state information includes a signal-to-noise ratio (CINR), a spatial correlation information, and a false transmission rate, a data transmission mode suitable for the receiving end, where the seventh determining unit includes: the second SD+CDD mode sub- Unit 1072, for the receiving end using SD + a) D mode, set a first threshold interval [SDCDD _ TH\ SDCDD _TH2], if CINRSDCDD < SDCDD _ THl , it is determined that the SD + CDD mode is suitable for picking up End of the data transmission mode, if CINRSDCDD> SDCDD _ TH2, it is determined SM + BF mode is suitable for data transmission receiving end, if _{SDCDD _ THl≤ CINR SDCDD ≤ SDCDD _} TH2, the determination unit 103 triggers the third to sixth determination unit Any one of 106 determines a data transmission mode suitable for the receiving end; a second + mode sub-unit 1074 sets a second threshold interval [SMBF _ THl, SMBF TH2] for the receiving end using the + mode, and a CINR of the mouth < SMBF _ ΤΗ\ , then determine The SD + CDD mode is suitable for the data transmission mode of the receiving end. If C/NR SMBF _ TH2 , it is determined that SM BF is suitable for the data transmission mode of the receiving end. If SMBF _TH\ ≤ CINR^ ≤ SMBF _ TH2 , the third trigger is triggered. Any one of the determining unit 103 to the sixth determining unit 106 determines a data transmission mode suitable for the receiving end; the eighth determining unit 108 is configured to set L decision points in the decision period, where L is an integer greater than or equal to At each of the decision points, any one of the third determining unit 103 to the seventh determining unit 107 is triggered to determine a data transmission mode suitable for the receiving end, and the number of times of the data transmission mode suitable for the receiving end according to the statistical SD + CDD mode is N1. Or determining the final data transmission mode suitable for the receiving end according to the statistical + mode is the number N2 of the data transmission mode suitable for the receiving end; the ninth determining unit 109 is configured to determine the data transmission rate trend during the decision period, and according to The data transmission rate trend determines the data transmission mode suitable for the receiving end. In summary, the antenna data transmission mode selection scheme provided by the foregoing embodiment of the present invention can flexibly select the data transmission mode as spatial diversity according to system channel state information (for example, channel conditions and application scenario changes). Cyclic delay diversity and spatial multiplexing beamforming to transmit data. This increases the stability of the link and increases the throughput of the system. 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 scope of the present invention are intended to be included within the scope of the present invention.

Claims

权利要求书 Claims

1. 一种天线数据发送模式的选择方法，其特征在于，包括： A method for selecting an antenna data transmission mode, comprising:

发送端根据信道状态信息从空间分集循环延迟分集 SD + CDD模式和空间复用波束赋形 + 模式中确定适合于接收端的数据发送模式；以及 The transmitting end determines a data transmission mode suitable for the receiving end from the spatial diversity cyclic delay diversity SD + CDD mode and the spatial multiplexing beamforming + mode according to the channel state information;

所述发送端使用所述确定的数据发送模式发送数据。 The transmitting end transmits data using the determined data transmission mode.

2. 根据权利要求 1所述的方法，其特征在于， 2. The method of claim 1 wherein

所述信道状态信息包括权值相关性信息；以及 The channel state information includes weight correlation information;

通过以下方式确定适合于接收端的数据发送模式：统计一个判决周期内权值相关性实时值大于相关性门限的次数

, 并判断所述 N 是否大于等于统计门限 Nwml , 如果是，则确定 + 模式是适合于所述接收端的数据发送模式，否则，确定 SD + CDD模式是适合于所述接收端的数据发送模式。 The data transmission mode suitable for the receiving end is determined by: counting the number of times that the real-time value of the weight correlation is greater than the correlation threshold in one decision period

And determining whether the N is greater than or equal to the statistical threshold Nwml, and if so, determining that the + mode is a data transmission mode suitable for the receiving end; otherwise, determining that the SD + CDD mode is a data transmission mode suitable for the receiving end.

3. 根据权利要求 2所述的方法，其特征在于，统计所述 N 包括： 3. The method according to claim 2, wherein counting the N comprises:

步骤 A: 初始化先前权值相关性 WR_Pre = , 其中， "为大于 0的常数；所述判决周期为 T帧；获得所述判决周期内的第一个权值 ^ , Ns初始 4匕为 0; Step A: Initialize the previous weight correlation WR _Pre = , where "is a constant greater than 0; the decision period is a T frame; obtain the first weight ^ in the decision period, and the initial 4 N of the Ns is 0 ;

步骤 B: 按照帧的时间顺序，在当前帧中获得第二个权值计算所述当前接收端的当前权值相关性7^„=|| ^^ *^₂ || , 其中， ^为矩阵的共轭转置， II ^ff * fT₂ II表示矩阵 * W₂的范数；更新所述先前权值相关性为 WR_Pre = pR_Pre + (1 _ )^ , ρ为常量且 0≤ ≤ 1 ,将所述第二个权值 W₂ 的值赋给所述如果 WR_Pre≥T_r , 将统计量 N 加 1 , 7；为第一门限值；重复执行所述步 4聚 B , 直至所述判决周期结束或者

Numi。 Step B: Calculate the current weight correlation of the current receiving end according to the time sequence of the frame, and obtain a current weight correlation of the current receiving end. 7^„=|| ^^ *^ ₂ || , where ^ is a matrix Conjugate transposition, II ^ff * fT ₂ II represents the norm of matrix * W ₂ ; updating the previous weight correlation is WR _Pre = pR _Pre + (1 _ )^ , ρ is constant and 0 ≤ ≤ 1 Assigning the value of the second weight W ₂ to the WR _Pre ≥T _r , adding the statistic N to 1, 7; as the first threshold; repeating the step 4 to B, until End of the judgment cycle or

Numi.

4. 根据权利要求 1所述的方法，其特征在于， 4. The method of claim 1 wherein

所述信道状态信息包括权值距离信息；以及 The channel state information includes weight distance information;

通过以下方式确定适合于接收端的数据发送模式：统计一个判决周期内权值距离实时值大于距离门限的次数 Nsi , 并判断所述 N 是否大于等于统计门限 Num2 , 如果是，则确定 SD + CDD模式是适合于所述接收端的数据发送模式，否则，确定 + 模式是适合于所述接收端的数据发送模式。才艮据权利要求 4所述的方法，其特征在于，统计所述 N 包括： The data transmission mode suitable for the receiving end is determined by: calculating the number Nsi of the weight distance real-time value greater than the distance threshold in a decision period, and determining whether the N is greater than It is equal to the statistical threshold Num2, and if so, it is determined that the SD + CDD mode is a data transmission mode suitable for the receiving end, otherwise, it is determined that the + mode is a data transmission mode suitable for the receiving end. The method according to claim 4, wherein the counting the N comprises:

步骤 A: 初始化先前权值距萬 D_Pre = a , 其中， "为大于 0的常数；在所述判决周期内的一个帧中获取第一个权值，所述周期为 T帧， Nsi 初始化为 0; Step A: Initialize the previous weight to 10,000 D _Pre = a , where "is a constant greater than 0; obtain a first weight in a frame within the decision period, the period is a T frame, and Nsi is initialized to 0;

步骤 B: 在后续的一个帧中获得第二个权值计算所述当前接收端的当前权值距离

其中， i/(^, ₂)为以下公式之一： ά(Ψ^Ψ₂) = λ^(ΨΨ^Η-Ψ₂Ψ₂ ^Η), d(W„W₂) =∑ ^wk,h —^wk,h I Step B: obtaining a second weight in a subsequent frame to calculate a current weight distance of the current receiving end

Where i/(^, ₂ ) is one of the following formulas: ά(Ψ^Ψ ₂ ) = λ^(ΨΨ ^Η -Ψ ₂ Ψ ₂ ^Η ), d(W„W ₂ ) =∑ ^w k,h — ^w k,h I

,7¾ ,73⁄4

P d(W_x,W₂) = max{| -w[ ,… ,I _M - )_M Π，其中，皿 - w₂w₂ ^H )表示矩阵 - w₂w₂ ^H的最大特征值为所述当前接收端的波束赋

P d(W _x , W ₂ ) = max{| -w[ ,... , I _M - ) _M Π, where, dish - w ₂ w ₂ ^H ) represents the maximum eigenvalue of the matrix - w ₂ w ₂ ^H Current beam at the receiving end

形权值， w , w_m(²为所述当前接收端不同时刻第根发送天线到第 /个波束的权值分量； m = l,2,'.',Tx, 1 = \,2,···,Μ , Γχ为所述发送端的所有物理天线的个数， Μ为所述发送端的所有天线发送的所有波束的个数， ρ为大于 0的常数；更新所述先前权值距离为 D_Pre = pD_Pre + (1 _ p)D_Cur , ρ 为常量且 0≤ ≤ 1 ,将所述第二个权值 W₂的值赋给所述 ^；如果 D_Pre > D_r , 将统计量 N 加 1 , 为第三门限值；重复执行所述步 4聚 Β , 直至所述判决周期结束或者 N ≥ Ν The weight value, w, w _m ( ² is the weight component of the first transmitting antenna to the /beam at different moments of the current receiving end; m = l, 2, '.', Tx, 1 = \, 2, ···,Μ , Γχ is the number of all physical antennas at the transmitting end, Μ is the number of all beams transmitted by all the antennas of the transmitting end, ρ is a constant greater than 0; updating the previous weight distance is D _Pre = pD _Pre + (1 _ p)D _Cur , ρ is a constant and 0 ≤ ≤ 1 , the value of the second weight W ₂ is assigned to the ^; if D _Pre > D _r , the statistics will be The quantity N is incremented by 1 and is the third threshold value; the step 4 is performed repeatedly until the end of the decision period or N ≥ Ν

6. 根据权利要求 1所述的方法，其特征在于，所述信道状态信息包信噪比 C/NR; 以及 6. The method according to claim 1, wherein the channel state information packet signal to noise ratio C/NR;

通过以下方式确定适合于接收端的数据发送模式：确定所述 SD+a)D模式下的 c/NR^DD对应的调制阶数 M 、编码速率 P_SDCDD、编码重复次数 R_SDCTM以及空间分集循环延迟分集的多输入多输出编码速率 cx _rnn , 并计算所述 SD + CDD模式下的发送速率

The data transmission mode suitable for the receiving end is determined by the following methods: Determining a modulation order M of a c/NR^DD in the SD+a)D mode, a coding rate P _SDCDD , a coding repetition number R _{SDCTM ,} and a multiple input multiple output coding rate cx _{rnn of the} spatial diversity cyclic delay diversity, and Calculate the transmission rate in the SD + CDD mode

确定所述 + 模式下的 C/NR 对应的调制阶数 M 、编码速率 P 、编码重复次数 R 以及空间复用波束赋形的多输入多输出编码速率 " ，并计算所述 SM BF 模式下的发送速率

Determining a modulation order M corresponding to C/NR in the + mode, a coding rate P, a coding repetition number R, and a multiple input multiple output coding rate of spatial multiplexing beamforming", and calculating the SM BF mode Send rate

在所述与所述中确定较大者，并确定所述较大者对应的数据发送模式是适合于所述接收端的数据发送模式。根据权利要求 1所述的方法，其特征在于， Determining a larger one in the description and determining that the data transmission mode corresponding to the larger one is a data transmission mode suitable for the receiving end. The method of claim 1 wherein

所述信道状态信息包括空间相关性的信息，所述空间相关性由信道相关矩阵的条件数 ¾表示；以及 The channel state information includes spatial correlation information, the spatial correlation being represented by a condition number 3⁄4 of the channel correlation matrix;

通过以下方式确定适合于接收端的数据发送模式：计算获取所述 ¾ , 并判断所述是否大于条件数门限值。，如果是，则确定所述 + 模式是适合于所述接收端的数据发送模式，否则，确定所述 SD + CDD模式是适合于所述接收端的数据发送模式。才艮据权利要求 7所述的方法，其特征在于，通过以下方式计算获取所述 51 : The data transmission mode suitable for the receiving end is determined by calculating the acquisition of the 3⁄4 and determining whether the value is greater than the condition number threshold. If yes, it is determined that the + mode is a data transmission mode suitable for the receiving end, otherwise, it is determined that the SD + CDD mode is a data transmission mode suitable for the receiving end. The method according to claim 7, characterized in that the obtaining 51 is calculated by:

步骤 A: 初始化先前信道相关性矩阵 R 步骤 B: 根据时间顺序，计算当前接收端在帧结构中用来计算信道相关性矩阵的载波集合上的信道相关性矩阵： R = c(_kH^H (k、* H(li) , 其中， N 表示所述载波集合上包含载波的数目， Step A: Initialize the previous channel correlation matrix R. Step B: Calculate the channel correlation matrix on the carrier set used by the current receiving end to calculate the channel correlation matrix in the frame structure according to the chronological order: R = c( _k H ^H ( k, * H(li) , where N represents the number of carriers included in the set of carriers,

H(k) = 和 ≥ 0分别是所述特定载波集合中

H(k) = and ≥ 0 are respectively in the specific carrier set

第 A个子载波的信道系数矩阵和比例系数，为第 ·根发送天线到根接收天线间的第 A个载波上的信道系数， _/ = 1,… ,Μ , = 1,…， N ,Μ为实际物理发送天线数目或者虚拟天线数目， ^为接收天线数目；更新所述先前信道相关性矩阵为

+ l- R, 为常量且 0≤ ≤1; 在所述判决周期内重复执行本步骤，直至所述判决周期结束； The channel coefficient matrix and the proportional coefficient of the A subcarrier are the channel coefficients on the Ath carrier between the first root transmit antenna and the root receive antenna, _/ = 1,..., Μ , = 1,..., N , Μ For the actual The number of physical transmit antennas or the number of virtual antennas, ^ is the number of receive antennas; update the previous channel correlation matrix to

+ l- R, being constant and 0 ≤ ≤1; repeating this step in the decision period until the end of the decision period;

步骤 C: 计算先前信道相关性矩阵的条件数： 3i = /(R_Pre), 其中， / Step C: Calculate the condition number of the previous channel correlation matrix: 3i = /(R _Pre ), where /

f(R_Pre) = ^{A (}^^P 、 f(R_Pre) = ϋ )或者 f(R _Pre ) = ^{A (} ^ ^P , f(R _Pre ) = ϋ ) or

HR_Pre) (^R _PrJ υ = _mn(R_Pre)；其中， tr(R_Pre)表示矩阵 R_Pre的迹，上标 ^表示对矩阵求共轭转置，HR _P re) ( ^R _Pr J υ = _mn (R _Pre ); where tr(R _Pre ) represents the trace of the matrix R _Pre , and the superscript ^ represents the conjugate transpose of the matrix,

^(R_P ， ^n(R_P 分别为矩阵 R_Pre的最大和最小特征值。 ^(R _P , ^n(R _P are the maximum and minimum eigenvalues of the matrix R _Pre respectively.

9. 根据权利要求 1所述的方法，其特征在于， 9. The method of claim 1 wherein

所述信道状态信息包括误发率 BER；以及 The channel state information includes a false alarm rate BER;

通过以下方式确定适合于接收端的数据发送模式： The data transmission mode suitable for the receiving end is determined by the following methods:

确定所述 S R, 其中，所述 S£R通过以下方式至少之一确定：在判决周期内获取所述接收端反馈的所述 S£R , 或者利用混合自动重传或自动重传计算当前数据发送模式下的所述 S R; 判断所述 S R是否小于误发率门限值 BER, , 如果是，则确定所述 Determining the SR, wherein the S£R is determined by at least one of: obtaining the S£R fed back by the receiving end in a decision period, or calculating current data by using hybrid automatic retransmission or automatic retransmission The SR in the sending mode; determining whether the SR is smaller than a false alarm rate threshold BER, and if yes, determining the

SM + 模式是适合于所述接收端的数据发送模式，否则，确定所述 SD + CDD模式是适合于所述接收端的数据发送模式。 The SM + mode is a data transmission mode suitable for the receiving end, otherwise, it is determined that the SD + CDD mode is a data transmission mode suitable for the receiving end.

10. 根据权利要求 1所述的方法，其特征在于， 10. The method of claim 1 wherein

所述信道状态信息包括：信噪比 CMR和误发率以及通过以下方式确定适合于接收端的数据发送模式： The channel state information includes: a signal to noise ratio (CMR) and a false transmission rate, and determining a data transmission mode suitable for the receiving end by:

对使用所述 SD + CDD模式的接收端，获取所述 SD + CDD模式下的 CINR , 并判断所述 CINR 是否大于信噪比门限值 SDCDD _ THI , 如果是，则确定所述 SM + BF模式是适合于所述接收端的数据发送模式，否则，确定所述 SD + a)D模式是适合于所述接收端的数据发送模式；对使用所述 + 模式的接收端，确定所述 + 模式下的 BER 并判断所述 £R™^是否大于误发率门限值 S Ro, 如果是，则确定所述 SD + CDD模式是适合于所述接收端的数据发送模式，否则，确定所述 + 模式是适合于所述接收端的数据发送模式，其中，所述 BER 通过以下方式至少之一确定：在判决周期内获得该接收端反馈的所逸 BER , 或者利用混合自动重传或自动重传计算当前数据发送模式的 BER SMBF。 And obtaining, by the receiving end of the SD+CDD mode, the CINR in the SD+CDD mode, and determining whether the CINR is greater than a signal-to-noise ratio threshold SDCDD_THI, and if yes, determining the SM+BF The mode is a data transmission mode suitable for the receiving end, otherwise, determining that the SD + a) D mode is a data transmission mode suitable for the receiving end; for the receiving end using the + mode, determining the + mode BER and determine whether the £RTM^ is greater than the false alarm rate threshold S Ro, and if so, determining that the SD + CDD mode is a data transmission mode suitable for the receiving end, otherwise determining the + mode Is a data transmission mode suitable for the receiving end, where The BER is determined by at least one of the following ways: obtaining the BER of the feedback from the receiver during the decision period, or calculating the BER SMBF of the current data transmission mode using hybrid automatic retransmission or automatic retransmission.

11. 根据权利要求 6至 10任一项所述的方法，其特征在于， The method according to any one of claims 6 to 10, characterized in that

所述信道状态信息包括：信噪比 CINR、空间相关性的信息以及误发率證; 以及通过以下方式确定适合于接收端的数据发送模式： The channel state information includes: a signal to noise ratio (CINR), spatial correlation information, and a false alarm rate certificate; and determining a data transmission mode suitable for the receiving end by:

对使用所述 SD + CDD模式的接收端，设置第一门限区间 [SDCDD _ THI, SDCDD _TH2] , 如 (：1肌 < SDCDD— ΊΊΠ , 则确定所述 SD + CDD 模式是适合于接收端的数据发送模式，如果 CINRsncnn > SDCDD _TH 2 , 则确定所述 + 是适合于接收端的数据发送模式，如 SDCDD _TH < CINR_SDCDD < SDCDD _ΤΗ2 , 则通过权利要求 4-8任一项所述的方式确定适合于接收端的数据发送模式； For the receiving end using the SD + CDD mode, a first threshold interval [SDCDD _ THI, SDCDD _TH2] is set, such as (: 1 muscle < SDCDD - ΊΊΠ , it is determined that the SD + CDD mode is suitable for the data of the receiving end In the transmission mode, if CINRsncnn > SDCDD _TH 2 , it is determined that the + is a data transmission mode suitable for the receiving end, such as SDCDD _TH < CINR _SDCDD < SDCDD _ ΤΗ 2, and the method according to any one of claims 4-8 is determined to be suitable. Data transmission mode at the receiving end;

对使用所述 SM BF模式的接收端，设置第二门限区间 [SMBF _ THI, SMBF TH2] , ^口果 CINR < SMBF _ THI , Μ确定所述 SD + CDD 模式是适合于接收端的数据发送模式，如果 CINRSMB, > SMBF _ TH2 , 则确定所述 SM + BF是适合于接收端的数据发送模式，如 SMBF _TH\≤CINR _F≤SMBF _ TH1 , 则通过权利要求 4-8任一项所述的方式确定适合于接收端的数据发送模式。 For the receiving end using the SM BF mode, a second threshold interval [SMBF_THI, SMBF TH2], ^口果 CINR < SMBF _ THI is set, Μ determining that the SD + CDD mode is suitable for the data transmission mode of the receiving end If the CINRSMB, > SMBF_TH2, is determined to be the data transmission mode suitable for the receiving end, such as SMBF_TH\≤CINR _F ≤SMBF_TH1, the method according to any one of claims 4-8 The mode determines the data transmission mode suitable for the receiving end.

12. 根据权利要求 11所述的方法，其特征在于，通过以下方式确定适合于接收端的数据发送模式： 12. The method according to claim 11, wherein the data transmission mode suitable for the receiving end is determined by:

在判决周期中设置 L个判决点，其中， L为大于等于 1的整数；在每个所述判决点通过权利要求 11所述的方式，从所述 SD + CDD模式或所述 SM + 模式中确定适合于接收端的数据发送模式，并统计所述 SD + CDD模式是适合于接收端的数据发送模式的次数 N1 , 或者统计所述 SM + BF模式是适合于接收端的数据发送模式的次数 N2; Setting L decision points in the decision period, where L is an integer greater than or equal to 1; in each of the decision points, by the manner described in claim 11, from the SD + CDD mode or the SM + mode Determining a data transmission mode suitable for the receiving end, and counting the number of times the SD + CDD mode is suitable for the data transmission mode of the receiving end N1, or counting the number of times the SM + BF mode is suitable for the data transmission mode of the receiving end N2;

如果 N1/L 大于或等于预定值；, 确定所述 SD + CDD模式是适合于接收端的数据发送模式，否则，确定所述 + 模式是适合于接收端的数据发送模式；如果 N2/L大于或等于预定值；, 确定所述 + 模式是适合于接收端的数据发送模式，否则，确定所述 SD + CDD模式是适合于接收端的数据发送模式。 If N1/L is greater than or equal to a predetermined value; determining that the SD+CDD mode is a data transmission mode suitable for the receiving end, otherwise determining that the + mode is a data transmission mode suitable for the receiving end; If N2/L is greater than or equal to a predetermined value; it is determined that the + mode is a data transmission mode suitable for the receiving end, otherwise, it is determined that the SD + CDD mode is a data transmission mode suitable for the receiving end.

13. 根据权利要求 6至 10任一项所述的方法，其特征在于， The method according to any one of claims 6 to 10, characterized in that

在判决周期中设置 L个判决点，其中， L为大于等于 1的整数；在每个所述判决点通过权利要求 4-8 任一项所述的方式，从所述 SD + CDD模式或所述 SM + 模式中确定适合于接收端的数据发送模式，并统计所述 SD + CDD模式是适合于接收端的数据发送模式的次数 N1 , 或者统计所述 SM + BF模式是适合于接收端的数据发送模式的次数 N2; Setting L decision points in the decision period, where L is an integer greater than or equal to 1; at each of the decision points, by the method of any of claims 4-8, from the SD + CDD mode or Determining a data transmission mode suitable for the receiving end in the SM+ mode, and counting the number of times the SD + CDD mode is suitable for the data transmission mode of the receiving end, or counting the SM + BF mode is suitable for the data transmission mode of the receiving end Number of times N2;

如果 N1/L 大于或等于预定值；, 确定所述 SD + CDD模式是适合于接收端的数据发送模式，否则，确定所述 + 模式是适合于接收端的数据发送模式； If N1/L is greater than or equal to a predetermined value; determining that the SD + CDD mode is a data transmission mode suitable for the receiving end; otherwise, determining that the + mode is a data transmission mode suitable for the receiving end;

如果 N2/L大于或等于预定值；, 确定所述 + 模式是适合于接收端的数据发送模式，否则，确定所述 SD + CDD模式是适合于接收端的数据发送模式。 If N2/L is greater than or equal to a predetermined value; it is determined that the + mode is a data transmission mode suitable for the receiving end, otherwise, it is determined that the SD + CDD mode is a data transmission mode suitable for the receiving end.

14. 根据权利要求 1所述的方法，其特征在于，通过以下方式确定适合于接收端的数据发送模式： 14. The method according to claim 1, wherein the data transmission mode suitable for the receiving end is determined by:

在判决周期内，发送端根据信道状态信息判断数据发送速率趋势；根据所述数据发送速率趋势从所述 SD + CDD模式或所述 SM + BF模式中确定适合于接收端的数据发送模式。 During the decision period, the transmitting end determines a data transmission rate trend according to the channel state information; and determines a data transmission mode suitable for the receiving end from the SD + CDD mode or the SM + BF mode according to the data transmission rate trend.

15. 根据权利要求 14所述的方法，其特征在于， 15. The method of claim 14 wherein

所述信道状态信息包括 CINR； The channel state information includes a CINR;

发送端根据信道状态信息判断数据发送速率趋势包括：在判决周期内设置多个判决点，依次在每个所述判决点获得当前数据发送模式下的 CINR , 并统计所述第二判决周期内 CINR≥ CINR^的次数 N_s , 所述 CINR^为信噪比门限值；如^ N_s≤N , 则确定所述数据发送速率趋势为下降，所述 N,为第一次数门限值；如果 ≥N₂ , 则确定所述数据发送速率趋势为上升，所述 N₂为第二次数门卩艮值；如果 N, < N < N₂ , 则确定所述数据发送速率趋势为不变。 The sender determines the data transmission rate trend according to the channel state information, including: Setting a plurality of decision points in the decision period, sequentially obtaining CINR in the current data transmission mode at each of the decision points, and counting the number N _{s of} CINR ≥ CINR^ in the second decision period, where the CINR^ is a signal-to-noise ratio threshold; if ^ N _s ≤ N, determining that the data transmission rate trend is decreasing, and the N is a first time threshold; if ≥ N ₂ , determining the data transmission rate The trend is rising, the N ₂ is the second number threshold value; if N, < N < N ₂ , it is determined that the data transmission rate trend is unchanged.

16. 根据权利要求 14所述的方法，其特征在于， 16. The method of claim 14 wherein

所述信道状态信息包括误发率 BER； The channel state information includes a false alarm rate BER;

发送端根据信道状态信息判断数据发送速率趋势包括：将判决周期划分为多个小周期，依次在每个所述小周期内获取所述接收端反馈的 BER , 或者利用混合自动重传或自动重传计算当前数据发送模式下的 The determining, by the sending end, the data sending rate trend according to the channel state information includes: dividing the determining period into a plurality of small periods, sequentially acquiring the BER fed back by the receiving end in each of the small periods, or using hybrid automatic retransmission or automatic weighting Pass the calculation of the current data transmission mode

统计所述判决周期内 BER≤ BER^的次数，所述为误发率门限值； Counting the number of times BER ≤ BER^ in the decision period, where the threshold is a false alarm rate;

如 N_S≤N , 则确定所述数据发送速率趋势为下降，所述 N,为第一次数门限值；如果 ≥N₂ , 则确定所述数据发送速率趋势为上升，所述 N₂为第二次数门卩艮值；如果 N, < N < N₂ , 则确定所述数据发送速率趋势为不变。 For example, if N _S ≤ N, it is determined that the data transmission rate trend is decreasing, and the N is a first time threshold; if ≥ N ₂ , determining that the data transmission rate trend is rising, the N ₂ It is the second number threshold value; if N, < N < N ₂ , it is determined that the data transmission rate trend is unchanged.

17. 根据权利要求 14至 16任一项所述的方法，其特征在于，根据所述数据发送速率趋势从所述 SD + CDD模式或所述 SM + 模式中确定适合于接收端的数据发送模式包括： The method according to any one of claims 14 to 16, wherein determining a data transmission mode suitable for the receiving end from the SD + CDD mode or the SM + mode according to the data transmission rate trend comprises :

如果所述发送速率趋势是上升的，在当前数据发送速率和最大发送速率之间确定一个数据发送速率对应的模式是适合于接收端的数据发送模式； If the transmission rate trend is rising, determining a mode corresponding to a data transmission rate between the current data transmission rate and the maximum transmission rate is a data transmission mode suitable for the receiving end;

如果所述发送速率趋势是下降的，在当前数据发送速率和最小发送速率之间确定一个数据发送速率对应的模式是适合于接收端的数据发送模式； If the transmission rate trend is decreasing, determining a mode corresponding to a data transmission rate between the current data transmission rate and the minimum transmission rate is a data transmission mode suitable for the receiving end;

如果所述发送速率趋势是不变的，保持当前的数据发送模式不变。 If the transmission rate trend is constant, the current data transmission mode is kept unchanged.

18. 根据权利要求 1所述的方法，其特征在于， 18. The method of claim 1 wherein

所述信道状态信息包括：第一类信息和第二类信息，其中，第一类信息包括：权值相关性信息或权值距离信息，第二类信息包括以下至少之一：信噪比 CI服、空间相关性的信息或误发率 S R ; 以及通过以下方式确定适合于接收端的数据发送模式： The channel state information includes: a first type of information and a second type of information, where the first type of information includes: weight correlation information or weight distance information, and the second type of information includes at least one of the following: a signal to noise ratio CI Service, spatial correlation information or false alarm rate SR; and determine the data transmission mode suitable for the receiving end by:

所述发送端根据所述第一类信息选择适合于所述接收端的数据发送模式，如果选择 S +a)D模式，则确定所述 SD+a)D模式为最终数据发送模式； The transmitting end selects a data transmission mode suitable for the receiving end according to the first type of information, and if the S+a)D mode is selected, determining that the SD+a)D mode is a final data transmission mode;

否则，所述发送端根据所述第二类信息选择适合于所述接收端的数据发送模式，如果选择 SD+a)D模式，则确定所述 SD+a)D模式为最终数据发送模式，否则，确定所述 + 模式为最终数据发送模式。 Otherwise, the sending end selects a data sending mode suitable for the receiving end according to the second type information, and if the SD+a)D mode is selected, determining that the SD+a)D mode is the final data sending mode, otherwise , determine that the + mode is the final data transmission mode.

19. 居权利要求 1所述的方法，其特征在于， 19. The method of claim 1 wherein:

所述发送端居所述第二类信息选择适合于所述接收端的数据发送模式，如果选择 S +a)D模式，则确定所述 SD+a)D模式为最终数据发送模式； And the transmitting end selects a data transmission mode suitable for the receiving end according to the second type of information, and if the S+a)D mode is selected, determining that the SD+a)D mode is a final data transmission mode;

否则，所述发送端根据所述第一类信息选择适合于所述接收端的数据发送模式，如果选择 SD+a)D模式，则确定所述 SD+a)D模式为最终数据发送模式，否则，确定所述 + 模式为最终数据发送模式。 Otherwise, the sending end selects a data sending mode suitable for the receiving end according to the first type of information, and if the SD+a)D mode is selected, determining that the SD+a)D mode is the final data sending mode, otherwise , determine that the + mode is the final data transmission mode.

20. 一种天线数据发送模式的选择装置，其特征在于，包括： 20. An apparatus for selecting an antenna data transmission mode, comprising:

确定模块，用于根据信道状态信息从空间分集循环延迟分集 SD + CDD模式或空间复用波束赋形 SM + 模式中确定适合于接收端的数据发送模式； a determining module, configured to determine, according to channel state information, a data transmission mode suitable for the receiving end from the spatial diversity cyclic delay diversity SD + CDD mode or the spatial multiplexing beamforming SM + mode;

发送模块，用于使用所述确定的数据发送模式发送数据。 And a sending module, configured to send data by using the determined data sending mode.

21. 居权利要求 20所述的装置，其特征在于，所述确定模块包括以下至少之一：第一确定单元，用于在所述信道状态信息包括权值相关性信息的情况下，根据统计一个判决周期内权值相关性实时值大于相关性门限的次数 , 确定适合于接收端的数据发送模式； 21. The apparatus of claim 20, wherein the determining module comprises at least one of the following: a first determining unit, configured to determine, according to the number of times that the real-time value of the weight correlation is greater than the correlation threshold in one decision period, the data transmission mode suitable for the receiving end is determined, where the channel state information includes weight correlation information ;

第二确定单元，用于在所述信道状态信息包括权值距离信息的情况下，根据统计一个判决周期内权值距离实时值大于距离门限的次数 Nsi , 确定适合于接收端的数据发送模式； a second determining unit, configured to determine, according to the statistics, the number of times that the real-time value of the weight distance is greater than the distance threshold Nsi in a decision period, in the case that the channel state information includes the weight distance information, determining a data transmission mode suitable for the receiving end;

第三确定单元，用于在所述信道状态信息包括权噪比 CINR的情况下，居所述噪比 CINR分别确定所述 SD + CDD模式下的发送速率 V_SDCDD 以及所述 + 模式下的发送速率，选择所述与所述中确定较大者作为适合于接收端的数据发送模式； a third determining unit, configured to determine a transmission rate V _{SDCDD in} the SD + CDD mode and a transmission in the + mode, respectively, when the channel state information includes a weight-to-noise ratio CINR Rate, selecting the larger one of the determinations as the data transmission mode suitable for the receiving end;

第四确定单元，用于在所述信道状态信息包括空间相关性的信息，其中，所述空间相关性由信道相关矩阵的条件数表示的情况下，判断所述 ¾是否大于条件数门限值 ¾。，以确定适合于接收端的数据发送模式； a fourth determining unit, configured to include, in the channel state information, spatial correlation information, where the spatial correlation is represented by a condition number of the channel correlation matrix, determining whether the 3⁄4 is greater than a condition number threshold 3⁄4. , to determine a data transmission mode suitable for the receiving end;

第五确定单元 ,用于在所述信道状态信息包括误发率腿的情况下 , 判断所述 S R是否小于误发率门限值 , 以确定适合于接收端的数据发送模式。才艮据权利要求 21所述的装置，其特征在于，所述确定模块还包括以下至少之一： And a fifth determining unit, configured to determine whether the S R is smaller than a false alarm rate threshold in the case that the channel state information includes a false transmission rate leg, to determine a data transmission mode suitable for the receiving end. The device according to claim 21, wherein the determining module further comprises at least one of the following:

第六确定单元，用于在所述信道状态信息包括信噪比 CINR和误发率 S R的情况下，确定适合于接收端的数据发送模式，所述第六确定单元包括： a sixth determining unit, configured to determine a data transmission mode suitable for the receiving end, where the channel state information includes a signal to noise ratio CINR and a false transmission rate S R, where the sixth determining unit includes:

第一 SD + CDD模式子单元，用于对使用所述 SD + CDD模式的接收端，获取所述 SD + CDD模式下的 CINR , 并判断所述 CINR 是否大于信噪比门限值 )a)D_rHi , 以确定适合于接收端的数据发送模式；第一 SM + 模式子单元，用于对使用所述 SM + BF模式的接收端，确定所述 SM + BF模式下的 BER , 并判断所述 £R™^是否大于误发率门限值 BE , 以确定适合于接收端的数据发送模式；第七确定单元，用于在所述信道状态信息包括信噪比 C/NR、空间相关性的信息以及误发率 BER的情况下，确定适合于接收端的数据发送模式，所述第七确定单元包括： a first SD+CDD mode subunit, configured to acquire, by the receiving end of the SD+CDD mode, a CINR in the SD+CDD mode, and determine whether the CINR is greater than a signal to noise ratio threshold)) D_rHi, to determine a data transmission mode suitable for the receiving end; a first SM+ mode subunit, configured to determine a BER in the SM+BF mode for the receiving end using the SM+BF mode, and determine the £ Whether RTM^ is greater than the false alarm rate threshold BE to determine a data transmission mode suitable for the receiving end; a seventh determining unit, configured to determine a data transmission mode suitable for the receiving end, where the channel state information includes a signal to noise ratio C/NR, spatial correlation information, and a false transmission rate BER, the seventh determining unit include:

第二 SD+a)D模式子单元，对使用所述 SD+a)D模式的接收端，设置第一门限区间 [SDCDD _ TH\, SDCDD TH1] , 如果 CINRsncDD < SDCDD _ ΤΗ\ , 则确定所述 SD + CDD模式是适合于接收端的数据发送模式，如 CINR _DD > SDCDD _ ΤΗ2 , 则确定所述 + 是适合于接收端的数据发送模式，如果 SDCDD _Tm≤ CINR_SDCDD≤ SDCDD TH2 , 则触发所述第三确定单元至第六确定单元中的任意之一确定适合于接收端的数据发送模式； a second SD+a)D mode subunit, for the receiving end using the SD+a)D mode, setting a first threshold interval [SDCDD_TH\, SDCDD TH1], if CINRsncDD < SDCDD _ ΤΗ\ The SD + CDD mode is a data transmission mode suitable for the receiving end, such as CINR _DD > SDCDD _ ΤΗ 2, determining that the + is a data transmission mode suitable for the receiving end, and if SDCDD _{_Tm} ≤ CINR _SDCDD ≤ SDCDD TH2, triggering Determining any one of the third determining unit to the sixth determining unit to determine a data transmission mode suitable for the receiving end;

第二 + 模式子单元，对使用所述 + 模式的接收端，设置第二门限区间 [SMBF _ mi, SMBF _ TH2] , 如果 CINR < SMBF _ ΤΗ\ , 则确定所述 SD + CDD模式是适合于接收端的数据发送模式，如果 CINRSMB, > SMBF _ TH2 , 则确定所述 SM + BF是适合于接收端的数据发送模式，如 SMBF _T ≤ CINR ≤ SMBF— TH 2 , 则触发所述第三确定单元至第六确定单元中的任意之一确定适合于接收端的数据发送模式；第八确定单元，用于在判决周期中设置 L个判决点，其中， L为大于等于 1的整数；在每个所述判决点触发所述第三确定单元至第七确定单元中的任意之一确定适合于接收端的数据发送模式，居统计的所述 SD + a)D模式是适合于接收端的数据发送模式的次数 N1 , 或者根据统计的所述 + 模式是适合于接收端的数据发送模式的次数 N2 , 确定适合于接收端的最终数据发送模式； a second + mode subunit, for the receiving end using the + mode, setting a second threshold interval [SMBF_mi, SMBF_TH2], and if CINR < SMBF _ ΤΗ\, determining that the SD + CDD mode is suitable In the data transmission mode at the receiving end, if CINRSMB, > SMBF_TH2, it is determined that the SM+BF is a data transmission mode suitable for the receiving end, such as SMBF_T ≤ CINR ≤ SMBF_TH 2 , triggering the third determining unit Determining, by any one of the sixth determining units, a data transmission mode suitable for the receiving end; an eighth determining unit, configured to set L decision points in the decision period, where L is an integer greater than or equal to 1; Determining, by the decision point, triggering any one of the third determining unit to the seventh determining unit to determine a data transmission mode suitable for the receiving end, wherein the SD + a) D mode is a number of times suitable for the data transmission mode of the receiving end N1, or according to the statistical + mode is a number N2 of data transmission modes suitable for the receiving end, determining a final data transmission mode suitable for the receiving end;

第九确定单元，用于在判决周期内，判断数据发送速率趋势，并根据所述数据发送速率趋势确定适合于接收端的数据发送模式。 And a ninth determining unit, configured to determine a data transmission rate trend during the decision period, and determine a data transmission mode suitable for the receiving end according to the data transmission rate trend.