WO2011057576A1

WO2011057576A1 - Method for configuring sounding reference signals

Info

Publication number: WO2011057576A1
Application number: PCT/CN2010/078677
Authority: WO
Inventors: 赵振山; 潘瑜; 池连刚; 赵爽; 彭木根
Original assignee: 普天信息技术研究院有限公司
Priority date: 2009-11-12
Filing date: 2010-11-12
Publication date: 2011-05-19
Also published as: CN101714897A; CN101714897B

Abstract

A method for configuring sounding reference signals (SRS) is provided in the prevent invention, which comprises the following steps: for each kind of configuration of SRS subframe configuration parameters, the configurations which are orthogonal to the kind of configuration are determined; all the configurations of SRS subframe configuration parameters are divided into three groups; all the cells are divided into three types according to the principle that each cell and its adjacent cells belong to cells of different types, then the three types of cells and the three groups of configurations of SRS subframe configuration parameters are arranged in one-to-one correspondence way; for each cell, according to the number and moving speeds of user equipments (UEs) and the principle that the configuration which is orthogonal to the SRS subframe configuration parameters of adjacent cells is selected preferably, one kind of configuration is selected from a group of configurations of the SRS subframe configuration parameters which corresponds to the cell, to configure the SRS subframe configuration parameters of the cell; for each cell, the SRS subframes occupied by each UE are set based on the SRS subframe configuration parameters of the cell. With the invention, the SRS interference between Coordinated Multi-Point (CoMP) cells is effectively reduced and good compatibility with conventional systems is realized simultaneously.

Description

探测参考信号的配置方法 Probe reference signal configuration method

技术领域 Technical field

本发明涉及移动通信***中的传输技术，特别是涉及探测参考信号 The present invention relates to transmission techniques in mobile communication systems, and more particularly to sounding reference signals

( Sounding Reference Signal, SRS ) 的配置方法。发明背景 (Sounding Reference Signal, SRS) configuration method. Background of the invention

为了应对 WiMAX标准的市场竟争，实现移动通信与宽带无线接入技术的融合，第 3代合作伙伴计划（3rd Generation Partnership Project, 3GPP )组织启动了长期演进 ( Long Term Evolution, LTE ) 项目。 LTE 在空中接口方面采用频分多址（OFDM/FDMA )替代了第三代移动通信 ***（3G )的码分多址（CDMA )方式。降低时延、提高用户数据速率、改善***容量以及覆盖、降低运营商的成本是 LTE的重要目标。 In order to cope with the market competition of WiMAX standards and realize the integration of mobile communication and broadband wireless access technologies, the 3rd Generation Partnership Project (3GPP) organization launched the Long Term Evolution (LTE) project. LTE replaces the third-generation mobile communication system (3G) code division multiple access (CDMA) method with frequency division multiple access (OFDM/FDMA) in the air interface. Reducing latency, increasing user data rates, improving system capacity, and covering and reducing operator costs are important goals for LTE.

长期演进项目的后续演进 ( Long Term Evolution- Advanced, LTE-A ) ***中提出采用多点协作 (Coordinated Multi-Point, CoMP)传输以提高小区高数据速率的覆盖范围、小区边^ ^吐量及 /或提高***吞吐量。 CoMP 的原理主要是通过多个小区联合处理或者协调调度以降低小区间千扰。 CoMP分为两种类型：联合处理（Joint Processing ) 和协调调度 /波束赋形（ Coordinated Scheduling Beamforming )。这两种方式都需要相互协作的小区间进行一定的信息的交互。 The Long Term Evolution-Advanced (LTE-A) system proposes the use of Coordinated Multi-Point (CoMP) transmission to improve the coverage of the high data rate of the cell, the cell edge throughput and / or improve system throughput. The principle of CoMP is mainly to reduce interference between cells by joint processing or coordinated scheduling of multiple cells. There are two types of CoMP: Joint Processing and Coordinated Scheduling Beamforming. Both of these methods require certain information interaction between cells that cooperate with each other.

参考信号（ Reference Signal, RS )是由发射端提供给接收端用于信道估计或信道探测的一种已知信号。 LTE-A***中，采用 SRS进行上行信道估计以实现上行频域调度。此外，在用户终端（User Equipment, UE )数据传输带宽内的 SRS可用做数据解调， SRS还有助于 UE窄带或者低频度上行传输时的定时。为了实现更加高效的调度， CoMP用户不仅要向本服务小区发送 SRS , 同时需要向协作小区发送 SRS。 The Reference Signal (RS) is a known signal that is provided by the transmitting end to the receiving end for channel estimation or channel sounding. In the LTE-A system, SRS is used for uplink channel estimation to implement uplink frequency domain scheduling. In addition, the SRS in the data transmission bandwidth of the user equipment (User Equipment, UE) can be used for data demodulation, and the SRS also helps the timing of the UE in narrowband or low frequency uplink transmission. For more efficient scheduling, CoMP users Not only the SRS needs to be sent to the serving cell, but also the SRS needs to be sent to the coordinated cell.

3GPP技术规范 Rel-8版本中对于用户发送 SRS的子帧位置做出如下规定：各小区有专属的 SRS序列组，并且各小区内用户发送 SRS的子帧通过该小区专属广播信令携带的小区专属参数即 SRS 子帧配置参数（ srsSubframeConfiguration )进行配置，每个小区独立配置各自的 SRS 子帧配置参数。 SRS子帧配置参数有 16种配置（即 16种取值），每种配置由 4比特指示，每种配置对应一种子帧集合，每种子帧集合所包含的子帧由周期和偏移 Δ 进行限定，具体地，每种子帧集合所包含的子帧集合可以用公式： {_¾ : « modr_src e A_src}表示，其中，《_s/为子帧号。表 1中列出了每种配置分别对应的周期 r_src和偏移 Δ 。In the Rel-8 version of the 3GPP technical specification, the subframe position for the user to send the SRS is as follows: Each cell has a dedicated SRS sequence group, and the subframe in which the user sends the SRS in each cell passes the cell carried by the cell exclusive broadcast signaling. The dedicated parameters, namely the SRS sub-frame configuration parameter ( srsSubframeConfiguration ), are configured, and each cell independently configures its own SRS subframe configuration parameters. The SRS subframe configuration parameters have 16 configurations (that is, 16 values), each configuration is indicated by 4 bits, and each configuration corresponds to one subframe set, and the subframe included in each seed frame set is performed by the period and the offset Δ. Specifically, specifically, the set of subframes included in each seed frame set may be expressed by the formula: { _3⁄4 : « modr _src e A _src }, where _s/ is a subframe number. The period r _src and offset Δ corresponding to each configuration are listed in Table 1.

表 1

Table 1

如表 1所示，当 SRS子帧配置参数取值为 "0000"~"1110"中的任一值时，则指示在每个无线帧中可以利用该值所对应的子帧集合中的子帧传输 SRS, 而当 SRS子帧配置参数取值为 "1111"时，则指示关闭该小区内用户发送的 SRS, 该值适用于当一个小区主要服务于高速移动的用户的场景中，因为，信道的快速时变特性将使得信道估计的结果不可靠，因此，此时需要关闭该小区内用户发送的 SRS。在小区专属参数配置的可用来发送 SRS的子帧中， SRS总是设置在最后一个 SC-FDMA符号上发送，在该 SC-FDMA符号上，即使用户不发送 SRS，该位置也不允许发送 PUSCH的数据信息，从而防止出现对其它在该符号发送 SRS的用户的干扰。 As shown in Table 1, when the SRS subframe configuration parameter takes any value from "0000" to "1110", it indicates that the subframe in the subframe set corresponding to the value can be utilized in each radio frame. The frame transmits the SRS, and when the SRS subframe configuration parameter takes the value of "1111", it indicates that the SRS sent by the user in the cell is turned off, and the value is applicable to a scenario in which a cell mainly serves a user who moves at a high speed, because, The fast time-varying characteristics of the channel will make the result of the channel estimation unreliable. Therefore, it is necessary to turn off the SRS sent by the user in the cell at this time. In the subframe in which the cell-specific parameter configuration can be used to transmit the SRS, the SRS is always set to be transmitted on the last SC-FDMA symbol, and on the SC-FDMA symbol, the location is not allowed to transmit the PUSCH even if the user does not transmit the SRS. The data information, thereby preventing interference to other users who send SRS at the symbol.

上述 3GPP技术规范 Rel-8版本中定义的 SRS机制不适合直接应用于 CoMP背景下。其原因在于：当服务小区的 CoMP用户向协作小区发送 SRS时，协作小区内的非 CoMP用户因为正常通信也需要发送 SRS , 并且这类用户并不能感知到 CoMP用户的存在，这样，将会出现服务小区的 CoMP用户与其协作小区的用户在同一子帧位置发送 SRS的情况。然而，虽然同一小区内 SRS 序列间可正交，但是当服务小区的 CoMP 用户与其协作小区的用户在同一子帧位置发送 SRS时，不同 SRS序列组间由于其基本序列、序列长度等的区别，使得它们之间不能满足正交性，这样，非 CoMP用户和 CoMP用户发射的 SRS信号在基站接收时便会相互产生强烈的干扰，严重影响信道估计的准确性。下面以图 1为例对此进行举例说明。如图 1所示，小区 1中的 CoMP UEl与小区 2中的 UE ( UE2和 UE3 )在椭圓形实线指示的位置上发送 SRS参数时，将发生干扰，而同属于小区 2的 UE2和 UE3在椭圓形虛线指示的位置上发送 SRS参数时，则不会发生千扰。为了解决上述 CoMP 小区间的 SRS 干扰问题，目前， 3GPP提案 R1-092367中提出可以考虑对 CoMP用户釆用一种新的 SRS序列设计，以通过使得 CoMP用户和协作小区的非 CoMP用户的 SRS序列相互正交来减少 CoMP小区间的 SRS千扰，这种思路虽然可以达到正交的预期，但违背了 LTE-A后向兼容的宗旨，对协议需要进行非常大的改动，并且需要相当精细的设计才能保证 CoMP用户和 LTE用户间 SRS的正交性，因此，不具有可行性。发明内容 The SRS mechanism defined in the above 3GPP technical specification Rel-8 version is not suitable for direct application in the CoMP context. The reason is: When a CoMP user of a serving cell sends an SRS to a coordinated cell, a non-CoMP user in the coordinated cell needs to send an SRS because of normal communication, and such a user cannot perceive the existence of the CoMP user, and thus, The case where the CoMP user of the serving cell and the user of the coordinated cell transmit the SRS in the same subframe position. However, although the SRS sequences in the same cell may be orthogonal, when the CoMP user of the serving cell and the user of the coordinated cell send the SRS in the same subframe position, the difference between the basic sequence and the sequence length of the different SRS sequence groups is Therefore, the orthogonality cannot be satisfied between them, so that the SRS signals transmitted by the non-CoMP users and the CoMP users will strongly interfere with each other when the base station receives, which seriously affects the accuracy of the channel estimation. This will be exemplified by taking FIG. 1 as an example. As shown in FIG. 1, when CoMP UE1 in cell 1 and UE (UE2 and UE3) in cell 2 transmit SRS parameters at a position indicated by an elliptical solid line, interference will occur, and UE2 and cell 2 belonging to cell 2 When UE3 transmits the SRS parameter at the position indicated by the elliptical dotted line, no interference occurs. In order to solve the SRS interference problem of the above CoMP interval, it is proposed in the 3GPP proposal R1-092367 that a new SRS sequence design can be considered for CoMP users to pass the SRS sequence of the non-CoMP users of the CoMP user and the coordinated cell. Mutual orthogonality to reduce SRS interference between CoMP cells, although this idea can achieve orthogonal expectations, but contrary to the LTE-A backward compatibility, the protocol needs to be very modified, and needs to be quite fine The design can guarantee the orthogonality of SRS between CoMP users and LTE users, so it is not feasible. Summary of the invention

有鉴于此，本发明的主要目的在于提供一种探测参考信号的配置方法，该方法能有效减少多点协作小区间的 SRS干扰，同时对现有***有很好的兼容性。 In view of this, the main object of the present invention is to provide a method for configuring a sounding reference signal, which can effectively reduce SRS interference between multi-point coordinated cells, and has good compatibility with existing systems.

为了达到上述目的，本发明提出的技术方案为： In order to achieve the above object, the technical solution proposed by the present invention is:

一种探测参考信号（SRS ) 的配置方法，该方法包括以下步骤： a、对于 SRS子帧配置参数的每种配置，确定与该配置正交的配置，所述正交为两种配置各自对应的子帧集合中不存在相同的子帧； A method for configuring a sounding reference signal (SRS), the method comprising the steps of: a. determining, for each configuration of an SRS subframe configuration parameter, a configuration orthogonal to the configuration, where the orthogonality corresponds to each of the two configurations The same subframe does not exist in the subframe set;

b、对 SRS子帧配置参数的所有配置进行分组，得到三组 SRS子帧配置参数的配置； b. All the configurations of the SRS subframe configuration parameters are grouped, and the configuration of the three sets of SRS subframe configuration parameters is obtained.

c、按照每个小区与其相邻小区属于不同类小区的原则，将所有小区分为三类，将所述三类小区与所述三组 SRS子帧配置参数的配置——对 JsL ; c. According to the principle that each cell and its neighboring cells belong to different types of cells, all cells are classified into three types, and the configuration of the three types of cells and the three sets of SRS subframe configuration parameters are paired with JsL;

d、对于每个小区，根据本小区中用户终端（UE )的数目和所述 UE 的移动速度，按照优先选择与其邻小区的 SRS子帧配置参数的配置相正交的配置的原则，从本小区所对应的一组 SRS子帧配置参数的配置中，选择一种对本小区的 SRS子帧配置参数进行配置； e、每个小区根据本小区的 SRS子帧配置参数所对应的子帧集合，通过 SRS配置索引参数设置本小区内各 UE占用的 SRS子帧。 d. For each cell, according to the number of user terminals (UEs) in the current cell and the moving speed of the UE, according to the principle of preferentially selecting the configuration of the SRS subframe configuration parameters of the neighboring cells, In the configuration of a set of SRS subframe configuration parameters corresponding to the cell, selecting a configuration of the SRS subframe configuration parameter of the local cell; e. Each cell sets an SRS subframe occupied by each UE in the cell according to the SRS configuration index parameter according to the subframe set corresponding to the SRS subframe configuration parameter of the current cell.

较佳地，所述步骤 e之后进一步包括： Preferably, after the step e, the method further comprises:

f、每个小区将本小区内的多点协作 UE所占用的 SRS子帧通知给所述多点协作 UE的协作小区，当所述协作小区调度其小区内的 UE时，避免在所述多点协作 UE所占用的 SRS子帧上的最后一个符号上发送上行数据。 f. Each cell notifies the coordinated cell of the multi-point coordinated UE in the SRS subframe occupied by the coordinated UE in the cell, and when the coordinated cell schedules the UE in the cell, avoiding the multiple The uplink data is transmitted on the last symbol on the SRS subframe occupied by the coordinated UE.

较佳地，所述步骤 d和 e之间进一步包括： Preferably, the step d and e further include:

x、判断具有协作关系的各小区间的 SRS子帧配置参数的配置是否正交，如果不是，则按照将协作小区的非多点协作 UE的 SRS子帧配置与服务小区的多点协作 UE的 SRS子帧配置相正交的原则，设置所述具有协作关系的各小区的非多点协作 UE的 SRS子帧配置范围和多点协作 UE的 SRS子帧配置范围； x. determining whether the configuration of the SRS subframe configuration parameter between the cells having the cooperative relationship is orthogonal, if not, according to the SRS subframe configuration of the non-multi-point coordinated UE of the coordinated cell and the coordinated UE of the serving cell The principle that the SRS subframe configuration is orthogonal, the SRS subframe configuration range of the non-multipoint coordinated UE of each cell having the cooperative relationship and the SRS subframe configuration range of the coordinated UE are set;

所述步驟 e为： The step e is:

对于每个小区，如果在步骤 _e中设置了本小区的非多点协作 UE的 SRS子帧配置范围和多点协作 UE的 SRS子帧配置范围，则在本小区的所述非多点协作 UE子帧配置范围内，通过 SRS配置索引参数设置本小区内各非多点协作 UE占用的 SRS子帧，在本小区的多点协作 UE子帧配置范围内，通过 SRS配置索引参数设置本小区内各多点协作 UE占用的 SRS子帧；否则，在本小区的 SRS子帧配置参数所对应的子帧集合范围内，通过 SRS配置索引参数设置本小区内各 UE占用的 SRS子帧。 For each cell, if the SRS subframe configuration range of the non-multipoint coordinated UE of the current cell and the SRS subframe configuration range of the coordinated UE are set in step _e , the non-multipoint coordinated UE in the local cell In the subframe configuration range, the SRS configuration index parameter is used to set the SRS subframe occupied by each non-multipoint coordinated UE in the current cell, and the SRS configuration index parameter is set in the local cell within the multi-point coordinated UE subframe configuration range of the current cell. The SRS subframes occupied by the UEs in the local area are set in the SRS sub-frames of the UEs in the cell.

较佳地，设置所述具有协作关系的各小区的非多点协作 UE的 SRS 子帧配置范围和多点协作 UE的 SRS子帧配置范围为： Preferably, the SRS subframe configuration range of the non-multipoint coordinated UEs of the cells having the cooperative relationship and the SRS subframe configuration range of the coordinated UE are:

对于所述具有协作关系的 /个小区中的最大的小区 max , 将皿 - u(CF_max n O^)作为该小区的多点协作 UE 的 SRS 子帧配置，将 CF u (CT_max n CF_; )作为该小区的非多点协作 UE的 SRS子帧配置，其中， CF_;为小区的 SRS子帧配置参数对应的子帧集合， | ^_χ| > |(^| ， e {l,2,..., /},且 ma_X , |CT;|为小区的 SRS子帧配置参数对应的子帧集合中的子帧数量， Γ={ p：小区 _max中有以小区 p为协作小区的多点协作 UE} , Φ ={ 小区 g中有小区 max以为协作小区的多点协作 UE}； For the largest cell max of the cooperative cells, - u(CF _max n O^) is used as the SRS subframe configuration of the coordinated UE of the cell, and CF u (CT _max n CF _; ) is configured as the SRS subframe of the non-multipoint coordinated UE of the cell, where , CF _; set the subframe corresponding to the SRS subframe configuration parameter of the cell, | ^ _χ | > |(^| , e {l, 2,..., /}, and ma _X , |CT;| SRS subframe configurable number of subframes set of parameters corresponding to, Γ = {p: cell _max there to the cell p is cooperative cell coordinated multipoint UE}, Φ = {cell g have cell max that collaborate Multi-point cooperation UE of the cell};

对于所述具有协作关系的 I个小区中除小区 max之外的其他的每个小区 i ,将本小区的非多点协作 UE的 SRS子帧配置范围和多点协作 UE 的 SRS子帧配置范围均设置为本小区的 SRS子帧配置参数所对应的子帧集合 ( 。 For each cell i other than the cell max among the I cells having the cooperative relationship, the SRS subframe configuration range of the non-multipoint coordinated UE of the current cell and the SRS subframe configuration range of the coordinated UE Set to the subframe set corresponding to the SRS subframe configuration parameter of the cell.

b、从 SRS子帧配置参数的所有具有正交配置的配置中选择三种以上的配置，对所选择的配置进行分组，其中，每組中的配置均与其他两组中的配置相正交； b. Select three or more configurations from all configurations with orthogonal configurations of the SRS subframe configuration parameter, and group the selected configurations, wherein the configurations in each group are orthogonal to the configurations in the other two groups. ;

C、按照各小区与其相邻小区属于不同类小区的原则，将所有小区分为三类，将所述三类小区与所述三组 SRS 子帧配置参数的配置——对应； C. According to the principle that each cell and its neighboring cells belong to different types of cells, all the cells are classified into three types, and the three types of cells are configured corresponding to the configuration parameters of the three sets of SRS subframes.

d、对于各小区，根据本小区中用户终端（ UE ) 的数目和所述 UE 的移动速度，从本小区所对应的一组 SRS子帧配置参数的配置中，选择一种对本小区的 SRS子帧配置参数进行配置； d. For each cell, according to the number of user terminals (UEs) in the current cell and the moving speed of the UE, select a SRS sub-group for the local cell from the configuration of a set of SRS subframe configuration parameters corresponding to the current cell. Frame configuration parameters are configured;

e、各小区根据本小区的 SRS子帧配置参数所对应的子帧集合，通过 SRS配置索引参数设置本小区内各 UE占用的 SRS子帧。较佳地，所述步骤 e之后进一步包括： e. Each cell sets an SRS subframe occupied by each UE in the cell according to the SRS configuration index parameter according to the subframe set corresponding to the SRS subframe configuration parameter of the current cell. Preferably, after the step e, the method further comprises:

将本小区内的多点协作 UE所占用的 SRS子帧通知给所述多点协作 UE的协作小区，所述协作小区在调度其小区内的 UE时，避免在所述多点协作 UE所占用的 SRS子帧上的最后一个符号上发送上行数据。 Notifying the coordinated cell of the multi-point coordinated UE that is occupied by the multi-point coordinated UE in the cell, the coordinated cell avoiding occupying by the multi-point coordinated UE when scheduling the UE in the cell The uplink data is transmitted on the last symbol on the SRS subframe.

综上所述，本发明提出的探测参考信号的配置方法，通过在时域上尽量避免多点协作 UE和其协作小区的非多点协作 UE的 SRS子帧出现重叠，从而可以有效减少协作小区间的 SRS千扰，同时，本发明可仍然采用现有 LTE***的帧结构，对原***参数本身未作任何修改，只是对参数取值的选项加以限制，因此对现有***有艮好的后向兼容性。附囹简要说明 In summary, the method for configuring the sounding reference signal proposed by the present invention can effectively reduce the overlap of the SRS subframes of the non-multi-point coordinated UEs of the coordinated UE and the coordinated cells thereof in the time domain. At the same time, the present invention can still adopt the frame structure of the existing LTE system, and does not modify the original system parameters themselves, but only limits the options of parameter values, so the existing system is good. Backward compatibility. Brief description

图 1为现有***中小区间 SRS千扰示意图； 1 is a schematic diagram of inter-cell SRS interference in an existing system;

图 2为本发明实施例一中 SRS的配置方法的流程图； 2 is a flowchart of a method for configuring an SRS according to Embodiment 1 of the present invention;

图 3为本发明实施例中小区与 SRS子帧配置参数的配置的对应关系示意图； FIG. 3 is a schematic diagram of a correspondence between a cell and an SRS subframe configuration parameter according to an embodiment of the present invention;

图 4为本发明实施例二中 SRS的配置方法的流程图。实施本发明的方式 FIG. 4 is a flowchart of a method for configuring an SRS according to Embodiment 2 of the present invention. Mode for carrying out the invention

为使本发明的目的、技术方案和优点更加清楚，下面将结合附图及具体实施例对本发明作进一步地详细描述。 The present invention will be further described in detail below with reference to the drawings and specific embodiments.

本发明的核心思想是：在对每个小区进行小区专属参数层面 SRS配置时，即对 SRS子帧配置参数进行配置时，尽量为该小区配置与其邻小区的 SRS子帧配置参数相正交的配置，这样，便可在时域上减少多点协作 UE和其协作小区的非多点协作 UE的 SRS子帧出现重叠的情况，从而可以有效減少协作小区间的 SRS干扰。图 2为本发明实施例一中 SRS的配置方法的流程图，如图 2所示，本发明实施例一的 SRS配置方法主要包括： The core idea of the present invention is: When performing cell-specific parameter level SRS configuration for each cell, that is, when configuring the SRS subframe configuration parameter, try to configure the cell to be orthogonal to the SRS subframe configuration parameters of its neighboring cell. Therefore, the SRS subframes of the non-multi-point coordinated UEs of the coordinated UE and the coordinated cell of the coordinated cell can be reduced in the time domain, so that the SRS interference between the coordinated cells can be effectively reduced. 2 is a flowchart of a method for configuring an SRS according to Embodiment 1 of the present invention. As shown in FIG. 2, the SRS configuration method in the first embodiment of the present invention mainly includes:

步骤 201、对于 SRS子帧配置参数的每种配置，确定与该配置正交的配置。 Step 201: Determine, for each configuration of the SRS subframe configuration parameter, a configuration orthogonal to the configuration.

这里，所述正交是指两种配置各自对应的子帧集合中不存在相同的子帧。 Here, the orthogonality means that the same subframe does not exist in the subframe set corresponding to each of the two configurations.

本步驟中，需要对现有的 SRS子帧配置参数的每种配置，确定与该配置相正交的配置（即该配置的正交配置），以便在后续过程中可以根据各配置的正交配置，尽量为各小区配置与其邻小区正交的 SRS子帧配置参数，以在时域上减少多点协作 UE和其协作小区的非多点协作 UE 配置的正交配置集合可通过表 2进行说明。 In this step, each configuration of the existing SRS subframe configuration parameters needs to be determined, and the configuration orthogonal to the configuration (that is, the orthogonal configuration of the configuration) is determined, so that it can be orthogonal according to each configuration in the subsequent process. Configuring to configure the SRS subframe configuration parameters orthogonal to the neighboring cells for each cell to reduce the orthogonal configuration set of the non-multipoint coordinated UE configuration of the coordinated UE and its coordinated cell in the time domain. Description.

6,8}

{0,1,2,3,4, {0,1,2,3,4,

14 1110 10 无 14 1110 10 no

5,6,8} 5,6,8}

15 1111 保留保留保留 15 1111 reservation reservation reservation

表 2 Table 2

表 2中给出了配置 0 ~ 14各自的正交配置。例如，对于配置 1 , 与其正交的配置有配置 2、 10、 12三种配置，而对于配置 0, 由于其子帧周期为 1个子帧，且偏移为 0子帧，这将意味着该配置 0所对应的子帧集合中将包括所有子帧，相应地，与其不发生子帧重叠的配置将不存在，因此，配置 0没有正交配置，类似地，配置 13、 14也不存在正交配置。另外，由于配置 15为保留项，其相应地正交配置也不确定。 The orthogonal configurations of configurations 0 ~ 14 are given in Table 2. For example, for configuration 1, there are three configurations of configuration 2, 10, and 12, and for configuration 0, since its subframe period is 1 subframe and the offset is 0 subframe, this means that All subframes will be included in the subframe set corresponding to configuration 0. Accordingly, the configuration that does not overlap with the subframe will not exist. Therefore, configuration 0 has no orthogonal configuration. Similarly, configurations 13 and 14 do not exist. Hand over the configuration. In addition, since configuration 15 is a reserved item, its corresponding orthogonal configuration is also undefined.

步骤 202、对 SRS子帧配置参数的所有配置进行分组，得到三组 SRS 子帧配置参数的配置。 Step 202: Group all configurations of the SRS subframe configuration parameters to obtain configuration of three sets of SRS subframe configuration parameters.

本步驟，将 SRS子帧配置参数的所有配置分成三组，以便在后续过程中对每个小区的 SRS 子帧配置参数进行配置时，确保各小区的 SRS 子帧配置参数能与其相邻小区的 SRS子帧配置参数不相同。 In this step, all the configurations of the SRS subframe configuration parameters are divided into three groups, so as to configure the SRS subframe configuration parameters of each cell in the subsequent process, and ensure that the SRS subframe configuration parameters of each cell can be adjacent to the neighboring cells. The SRS subframe configuration parameters are different.

较佳地，可以按照尽量使每组的配置与其他组中的配置相正交的原则，进行上述三组配置的划分，这样，在步骤 204中为每个小区的 SRS 子帧配置参数进行配置时，可以更容易地选择出与其邻小区的 SRS子帧配置参数的配置相正交的配置，从而更大程度地使不同小区的 SRS子帧配置参数的配置相正交，有利于进一步減少多点协作小区间的千扰。 Preferably, the three sets of configurations may be divided according to the principle that the configuration of each group is orthogonal to the configuration in other groups. Thus, in step 204, the SRS subframe configuration parameters of each cell are configured. The configuration of the SRS subframe configuration parameter of the neighboring cell may be more easily selected to be orthogonal to the configuration of the SRS subframe configuration parameter of the neighboring cell, thereby facilitating further reduction of the configuration of the SRS subframe configuration parameters of different cells. Point the interference between the collaborative cells.

步骤 203、按照每个小区与其相邻小区属于不同类小区的原则，将所有小区分为三类，将所述三类小区与所述三组 SRS子帧配置参数的配置一一对应。 Step 203: According to the principle that each cell and its neighboring cells belong to different types of cells, all the cells are classified into three types, and the three types of cells are in one-to-one correspondence with the configurations of the three sets of SRS subframe configuration parameters.

本步驟中，将所有小区分成三类，并使得每个小区与其相邻小区属于不同类的小区，然后将三类小区分别与步骤 202中所确定的三组 SRS 子帧配置参数——对应，这样，对于每个小区而言，将与其邻小区分别对应不同组的 SRS子帧配置参数的配置。 In this step, all the cells are classified into three types, and each cell and its neighboring cells belong to different types of cells, and then the three types of cells are respectively associated with the three groups of SRSs determined in step 202. The subframe configuration parameter, correspondingly, is such that, for each cell, the configuration of the SRS subframe configuration parameters of the different groups corresponding to the neighboring cells respectively.

具体地，三类小区与三组 SRS子帧配置参数的配置关系，可通过图 3中的示例进行详细说明。 Specifically, the configuration relationship between the three types of cells and the three sets of SRS subframe configuration parameters may be specifically described by using the example in FIG. 3.

图 3中，三组 SRS子帧配置参数的配置分别用 A、 B、 C表示，其中， ^ = {4, /1₂ } , B = {B₁ , B₂ , B₃ , B₄ , B₅} . c = {c_l ,c₂,c_i,c_A,c₅] , 小区 1 使用了 A组中的配置 4 , 小区 1的相邻小区则使用了 B组或 C组中的配置，小区 2与小区 1的情况类似。可见，通过上述对小区的分类和对 SRS子帧配置参数的配置的分组 , 能确保本小区与其邻小区分别对应不同组的 SRS子帧配置参数的配置。 In Figure 3, the configuration of the three sets of SRS subframe configuration parameters are represented by A, B, and C, respectively, where ^ = {4, /1 ₂ } , B = {B ₁ , B ₂ , B ₃ , B ₄ , B ₅ } . c = {c _l , c ₂ , c _i , c _A , c ₅ ] , cell 1 uses configuration 4 in group _A , and neighboring cell in cell 1 uses configuration in group B or group C. The cell 2 is similar to the case of the cell 1. It can be seen that, by using the foregoing classification of the cell and the configuration of the SRS subframe configuration parameter, it can be ensured that the local cell and its neighboring cell respectively correspond to the configuration of different groups of SRS subframe configuration parameters.

步骤 204、对于每个小区，根据本小区中用户终端（UE ) 的数目和所述 UE的移动速度，按照优先选择与其邻小区的 SRS子帧配置参数的配置相正交的配置的原则，从本小区所对应的一组 SRS子帧配置参数的配置中，选择一种对本小区的 SRS子帧配置参数进行配置。 Step 204: For each cell, according to the number of user terminals (UEs) in the current cell and the moving speed of the UE, according to the principle of preferentially selecting the configuration of the SRS subframe configuration parameters of the neighboring cells, In the configuration of a set of SRS subframe configuration parameters corresponding to the cell, a configuration is selected for the SRS subframe configuration parameter of the local cell.

本步骤在具体实现时，对于每个小区，本领域技术人员需要根据该小区 UE的数目和该小区 UE的移动速度，可以确定出该小区合适的 SRS 时域密度，根据该 SRS时域密度确定出 SRS子帧配置参数的合适配置。例如，如果小区内激活 UE的移动速度都较慢或者小区内用户数目较少，则可选择周期较大的 SRS 子帧配置参数的配置；反之选周期较小的配置。 In this implementation, for each cell, a person skilled in the art needs to determine the appropriate SRS time domain density of the cell according to the number of UEs in the cell and the moving speed of the cell UE, and determine the SRS time domain density according to the SRS time domain density. Appropriate configuration of the SRS subframe configuration parameters. For example, if the moving speed of the activated UE in the cell is slow or the number of users in the cell is small, the configuration of the SRS subframe configuration parameter with a larger period may be selected; otherwise, the configuration with a smaller period is selected.

本步驟中，对于每个小区，在该小区所对应的一组 SRS子帧配置参数的配置范围内，确定该小区 SRS子帧配置参数的配置，由于通过步骤 204使得每个小区与其邻小区分别对应不同组的 SRS子帧配置参数的配置，因此，通过本步骤可以使得每个小区与其相邻小区具有不同的 SRS 子帧配置参数的配置。另外，由于本步骤按照优先选择与其邻小区的 SRS子帧配置参数的配置相正交的配置的原则，为各小区的 SRS子帧配置参数进行配置，这样，可以较大程度的确保每个小区与其相邻小区具有相正交的 SRS子帧配置参数的配置，从而可以有效减少多点协作小区的干扰。 In this step, for each cell, in the configuration range of a set of SRS subframe configuration parameters corresponding to the cell, the configuration of the SRS subframe configuration parameter of the cell is determined, because each cell and its neighboring cell are respectively separated by step 204. Corresponding to the configuration of different groups of SRS subframe configuration parameters, therefore, this step can make each cell and its neighboring cells have different configurations of SRS subframe configuration parameters. In addition, since this step is configured according to the principle of preferentially selecting the configuration of the SRS subframe configuration parameters of the neighboring cell, the SRS subframe configuration parameters of each cell are configured, so that each cell can be ensured to a large extent. The configuration of the SRS subframe configuration parameters orthogonal to the neighboring cells thereof can effectively reduce the interference of the coordinated multi-cell.

进一步地，如果在步骤 202中按照尽量使每组 SRS子帧配置参数的配置与其他组中的配置正交的原则，划分上述三组 SRS子帧配置参数的配置，则对于一组 SRS子帧配置参数的配置而言，其中与其他组的配置相正交的配置更多，这样，将更易于为各小区选择出一种能够满足 "与其邻小区的 SRS子帧配置参数的配置相正交"这一条件的配置，从而更大程度地减少多点协作小区间的干扰。 Further, if the configuration of the three sets of SRS subframe configuration parameters is divided according to the principle that the configuration of each group of SRS subframe configuration parameters is orthogonal to the configuration in other groups as much as possible in step 202, then for a group of SRS subframes For the configuration of the configuration parameters, there are more configurations orthogonal to the configurations of other groups, so that it is easier to select a configuration for each cell that can satisfy the configuration of the SRS subframe configuration parameters of the neighboring cell. "The configuration of this condition, thereby reducing the interference between multi-point coordinated cells to a greater extent.

通过上述步骤可以看出，通过利用小区专属层面的 SRS参数的正交性 (即 SRS子帧配置参数的正交性），可以使较多小区使用的 SRS资源在时间上与其邻小区进行区别，从而能有效降低多点协作小区间的干扰。进一步地，对于协作小区间 SRS子帧配置参数不能正交的情况，可以通过对这些小区的非多点协作 UE 的 SRS 子帧配置范围和多点协作 UE的 SRS子帧配置范围进行设置，使协作小区的非多点协作 UE的 SRS 子帧配置与服务小区的多点协作 UE的 SRS子帧配置相正交。具体地，可以在步骤 204中通过下述步骤实现： It can be seen that, by using the orthogonality of the SRS parameters of the cell-specific layer (that is, the orthogonality of the SRS subframe configuration parameters), the SRS resources used by more cells can be distinguished from the neighboring cells in time. Therefore, the interference between the coordinated cells of multiple points can be effectively reduced. Further, for the case where the inter-cell SRS subframe configuration parameters cannot be orthogonal, the SRS subframe configuration range of the non-multipoint coordinated UEs of the cells and the SRS subframe configuration range of the multi-point coordinated UE may be set. The SRS subframe configuration of the non-multipoint coordinated UE of the coordinated cell is orthogonal to the SRS subframe configuration of the coordinated UE of the serving cell. Specifically, it can be implemented in step 204 by the following steps:

判断具有协作关系的各小区间的 SRS 子帧配置参数的配置是否正交，如果不是，则按照将协作小区的非多点协作 UE的 SRS子帧配置与服务小区的多点协作 UE的 SRS子帧配置相正交的原则，设置所述具有协作关系的各小区的非多点协作 UE 的 SRS 子帧配置范围和多点协作 UE的 SRS子帧配置范围。 Determining whether the configuration of the SRS subframe configuration parameters between the cells having the cooperative relationship is orthogonal, if not, according to the SRS subframe configuration of the non-multipoint coordinated UE of the coordinated cell and the SRS of the coordinated UE of the serving cell The principle that the frame configurations are orthogonal, the SRS subframe configuration range of the non-multipoint coordinated UEs of the cells having the cooperative relationship and the SRS subframe configuration range of the coordinated UE are set.

本步骤可以通过集中控制器实现。 This step can be implemented by a centralized controller.

具体地，设置所述具有协作关系的各小区的非多点协作 UE的 SRS 子帧配置范围和多点协作 UE的 SRS子帧配置范围的方法可以为：对于所述具有协作关系的 /个小区中的 |CF,.|最大的小区 max，将 -υ( ^_χηΟ^)作为该小区的多点协作 UE 的 SRS 子帧配置，将 CF u (CT_maxnCF_;)作为该小区的非多点协作 UE的 SRS子帧配置，其中，（^_;为小区 '的 SRS子帧配置参数对应的子帧集合， | ^_χ|>|(^| e{l,2,...,/},且≠max,|CF,|为小区的 SRS子帧配置参数对应的子帧集合中的子帧数量， Γ={ p：小区 _max中有以小区 p为协作小区的多点协作 UE} , Φ ={ 小区中有以小区 max为协作小区的多点协作 UE} Specifically, setting an SRS of the non-multipoint coordinated UE of each cell having a cooperative relationship The method of the subframe configuration range and the SRS subframe configuration range of the multi-point coordinated UE may be: for the |CF, . | largest cell max in the coordinated cell/cell, -υ( ^ _χ ηΟ^ ) as SRS subframe coordinated multi-point UE to the cell frame configuration, the CF u (CT _max _nCF;) as SRS subframe non-coordinated multi-point UE to the cell frame configuration, wherein, _(^; SRS subframe for the cell & apos The subframe set corresponding to the frame configuration parameter, | ^ _χ |>|(^| e{l,2,...,/}, and ≠max,|CF,| is the sub-sequence of the SRS subframe configuration parameter of the cell The number of subframes in the frame set, Γ={ p: the cell _max has a coordinated multi-homed UE with the cell p as the coordinated cell}, Φ = {the multi-point coordinated UE with the cell max as the coordinated cell in the cell}

例如，当 / = 3时，按照上述方法对具有协作关系的三个小区（小区 1、小区 2和小区 3 )的非多点协作 UE的 SRS子帧配置范围和多点协作 UE的 SRS子帧配置范围的设置可以如下表所示： For example, when /=3, the SRS subframe configuration range of the non-multipoint coordinated UEs of the three cells (cell 1, cell 2, and cell 3) having the cooperative relationship and the SRS subframe of the multipoint coordinated UE according to the above method The configuration range settings can be as follows:

表 3 table 3

表 3中，假设|(^|>|(¾|>|(^₃|，即小区 1的 SRS子帧配置参数对应的子帧集合中的子帧数量最多。对于所述具有协作关系的 I个小区中除小区 max之外的其他的每个小区 i，将本小区的非多点协作 UE的 SRS子帧配置范围和多点协作 UE 的 SRS子帧配置范围均设置为本小区的 SRS子帧配置参数所对应的子帧集合 CF_;。 In Table 3, it is assumed that |(^|>|( _3⁄4 |>|(^ ₃ |, that is, the number of subframes in the subframe set corresponding to the SRS subframe configuration parameter of the cell 1 is the largest. For each cell i other than the cell max among the I cells having the cooperative relationship, the SRS subframe configuration range of the non-multipoint coordinated UE of the current cell and the SRS subframe configuration range of the coordinated UE All are set to the subframe set CF corresponding to the SRS subframe configuration parameter of the cell _;

步骤 205、每个小区根据本小区的 SRS子帧配置参数所对应的子帧集合，通过 SRS配置索引参数设置本小区内各 UE占用的 SRS子帧。 Step 205: Each cell sets an SRS subframe occupied by each UE in the cell according to the SRS configuration index parameter according to the subframe set corresponding to the SRS subframe configuration parameter of the current cell.

这里，在步骤 204中完成了对每个小区的 SRS子帧配置参数的配置后，将在该配置所对应的子帧集合范围内，选择一个或多个子帧配置给小区内的各 UE, 从而完成 SRS子帧配置过程。 Here, after the configuration of the SRS subframe configuration parameter of each cell is completed in step 204, one or more subframes are selected to be allocated to each UE in the cell within the subframe set corresponding to the configuration, thereby Complete the SRS subframe configuration process.

进一步地，如果在步骤 204中 SRS子帧配置参数不能正交的协作小区的非多点协作 UE的 SRS子帧配置范围和多点协作 UE的 SRS子帧配置范围进行了设置，则本步骤将采用下方式实现： Further, if the SRS subframe configuration range of the non-multi-point coordinated UE of the coordinated cell in which the SRS subframe configuration parameter cannot be orthogonal in step 204 and the SRS subframe configuration range of the coordinated UE are set, this step will be performed. Implemented in the following way:

对于每个小区，如果在步骤 204 中设置了本小区的非多点协作 UE 的 SRS子帧配置范围和多点协作 UE的 SRS子帧配置范围，则在本小区的所述非多点协作 UE子帧配置范围内，通过 SRS配置索引参数设置本小区内各非多点协作 UE占用的 SRS子帧，在本小区的多点协作 UE子帧配置范围内，通过 SRS配置索引参数设置该小区内各多点协作 UE占用的 SRS子帧；否则，在本小区的 SRS子帧配置参数所对应的子帧集合范围内，通过 SRS配置索引参数设置本小区内各 UE占用的 SRS子帧。 For each cell, if the SRS subframe configuration range of the non-multipoint coordinated UE of the current cell and the SRS subframe configuration range of the coordinated UE are set in step 204, the non-multipoint coordinated UE in the local cell In the subframe configuration range, the SRS configuration index parameter is used to set the SRS subframe occupied by each non-multipoint coordinated UE in the current cell, and the SRS configuration index parameter is set in the cell within the multi-point coordinated UE subframe configuration range of the current cell. The SRS subframes occupied by the UEs in the local area are set in the SRS sub-frames of the UEs.

通过上述步驟，可以确保协作小区的非多点协作 UE的 SRS子帧配置与服务小区的多点协作 UE的 SRS子帧配置相正交，从而可以进一步避免协作小区间的干扰。 Through the above steps, it can be ensured that the SRS subframe configuration of the non-multi-point coordinated UE of the coordinated cell is orthogonal to the SRS subframe configuration of the coordinated UE of the serving cell, so that interference between the coordinated cells can be further avoided.

进一步地，步骤 205之后还可以进一步包括下述步骤，以进一步提高本实施例对协作小区间干扰的有效抑制： Further, after step 205, the following steps may be further included to further improve the effective suppression of inter-cell interference in the embodiment:

每个小区将本小区内的多点协作 UE所占用的 SRS子帧通知给所述多点协作 UE的协作小区，当所述协作小区调度其小区内的 UE时，避免在所述多点协作 UE所占用的 SRS子帧上的最后一个符号上发送上行数据。 Each cell notifies the SRS subframe occupied by the coordinated UE in the local cell to the The coordinated cell of the multi-point coordinated UE, when the coordinated cell schedules the UE in the cell, avoids transmitting uplink data on the last symbol on the SRS subframe occupied by the coordinated multi-homing UE.

通过上述实施例一中的技术方案可以看出，较佳地，本发明实施例一可以通过小区专属层面的 SRS参数（即 SRS配置索引参数）和用户层面的 SRS参数（即 SRS配置索引参数）的配置，最大程度地减少协作小区间的干扰。在实际应用中，还可以仅通过小区专属层面的 SRS参数的配置，达到上述减少协作小区间干扰的目的，下面通过本发明实施例二中的 SRS配置方法进行详细说明。 As can be seen from the technical solution in the first embodiment, the SRS parameters (that is, the SRS configuration index parameter) and the user-level SRS parameters (that is, the SRS configuration index parameter) of the cell-specific layer may be used in the first embodiment of the present invention. The configuration minimizes interference between cooperating cells. In the actual application, the SRS parameter configuration in the second embodiment of the present invention can be used to describe the SRS configuration method in the second embodiment of the present invention.

图 4为本发明实施例二中 SRS的配置方法的流程图。如图 4所示，该实施例二的 SRS配置方法包括以下步骤： FIG. 4 is a flowchart of a method for configuring an SRS according to Embodiment 2 of the present invention. As shown in FIG. 4, the SRS configuration method in the second embodiment includes the following steps:

步骤 401、对于 SRS子帧配置参数的每种配置，确定与该配置正交的配置。 Step 401: Determine, for each configuration of the SRS subframe configuration parameter, a configuration orthogonal to the configuration.

本步驟的具体实现与步骤 201相同，在此不再赘述。 The specific implementation of this step is the same as step 201, and details are not described herein again.

步骤 402、从 SRS子帧配置参数的所有具有正交配置的配置中选择三种以上的配置，对所选择的配置进行分组，其中，每组中的配置均与其他两组中的配置相正交。 Step 402: Select three or more configurations from all configurations having orthogonal configurations of the SRS subframe configuration parameter, and group the selected configurations, where the configurations in each group are aligned with the configurations in the other two groups. cross.

本步驟，在所有具有正交配置的配置中，选择出部分或全部的配置，来构造出三组配置，该三组配置需要满足条件：每组中的配置均与其他两组中的配置相正交，这样，在步骤 405中利用各小区所对应的一组 SRS 子帧配置参数对各小区进行配置时，可以确保各小区所配置的 SRS子帧配置参数与其邻小区的 SRS子帧配置参数正交，从而能够实现各小区所配置的 SRS资源在时域上是正交的，从而可以最大程度地避免协作小区间的干扰。 In this step, in all configurations with orthogonal configurations, some or all of the configurations are selected to construct three sets of configurations, and the three sets of configurations need to meet the conditions: The configuration in each group is different from the configuration in the other two groups. Orthogonal, in this case, when each cell is configured by using a set of SRS subframe configuration parameters corresponding to each cell in step 405, the SRS subframe configuration parameter configured by each cell and the SRS subframe configuration parameter of the neighboring cell can be ensured. The orthogonality enables the SRS resources configured in each cell to be orthogonal in the time domain, so that interference between the coordinated cells can be avoided to the utmost extent.

本步骤中具体选择多少配置构造上述三组 SRS子帧配置参数，可由本领域技术人员根据实际需要确定，只要能确保所选择的配置能构造出三组满足上述条件的 SRS子帧配置参数的配置即可。 How many configurations are specifically selected in this step to construct the above three sets of SRS subframe configuration parameters, Those skilled in the art can determine according to actual needs, as long as it can ensure that the selected configuration can construct three sets of configurations of SRS subframe configuration parameters that satisfy the above conditions.

步骤 403、按照各小区与其相邻小区属于不同类小区的原则，将所有小区分为三类，将所述三类小区与所述三组 SRS子帧配置参数的配置一一对应。 Step 403: According to the principle that each cell and its neighboring cells belong to different types of cells, all the cells are classified into three types, and the three types of cells are in one-to-one correspondence with the configurations of the three sets of SRS subframe configuration parameters.

本步骤的具体实现与步骤 203相同，在此不再赘述。 The specific implementation of this step is the same as that of step 203, and details are not described herein again.

步驟 404、对于各小区，根据本小区中用户终端（UE ) 的数目和所述 UE的移动速度,从本小区所对应的一组 SRS子帧配置参数的配置中，选择一种对本小区的 SRS子帧配置参数进行配置。 Step 404: For each cell, according to the number of user terminals (UEs) in the current cell and the moving speed of the UE, select a SRS for the local cell from the configuration of a set of SRS subframe configuration parameters corresponding to the local cell. Subframe configuration parameters are configured.

步骤 405、各小区根据本小区的 SRS子帧配置参数所对应的子帧集合，通过 SRS配置索引参数设置本小区内各 UE占用的 SRS子帧。 Step 405: Each cell sets an SRS subframe occupied by each UE in the cell according to the SRS configuration index parameter according to the subframe set corresponding to the SRS subframe configuration parameter of the current cell.

进一步地，为了进一步提高本实施例减少协作小区间干扰的有效性，所述步骤 405之后还可以进一步包括： Further, in order to further improve the effectiveness of the inter-cell interference in the embodiment, the step 405 may further include:

综上所述，以上仅为本发明的较佳实施例而已，并非用于限定本发明的保护范围。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。 In conclusion, the above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention. Any modifications, equivalents, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

权利要求书 Claim

1、一种探测参考信号（SRS ) 的配置方法，其特征在于，该方法包括以下步骤： A method for configuring a sounding reference signal (SRS), the method comprising the steps of:

a、对于 SRS子帧配置参数的每种配置，确定与该配置正交的配置，所述正交为两种配置各自对应的子帧集合中不存在相同的子帧； a, for each configuration of the SRS subframe configuration parameter, determining a configuration orthogonal to the configuration, where the orthogonal is the same subframe in the subframe set corresponding to the two configurations;

c、按照每个小区与其相邻小区属于不同类小区的原则，将所有小区分为三类，将所述三类小区与所述三组 SRS子帧配置参数的配置——对应； c. According to the principle that each cell and its neighboring cells belong to different types of cells, all cells are classified into three types, and the three types of cells are configured corresponding to the configuration parameters of the three sets of SRS subframes.

d、对于每个小区，根据本小区中用户终端（UE )的数目和所述 UE 的移动速度，按照优先选择与其邻小区的 SRS子帧配置参数的配置相正交的配置的原则，从本小区所对应的一组 SRS子帧配置参数的配置中，选择一种对本小区的 SRS子帧配置参数进行配置； d. For each cell, according to the number of user terminals (UEs) in the current cell and the moving speed of the UE, according to the principle of preferentially selecting the configuration of the SRS subframe configuration parameters of the neighboring cells, In the configuration of a set of SRS subframe configuration parameters corresponding to the cell, selecting a configuration of the SRS subframe configuration parameter of the local cell;

e、每个小区根据本小区的 SRS子帧配置参数所对应的子帧集合，通过 SRS配置索引参数设置本小区内各 UE占用的 SRS子帧。 e. Each cell sets an SRS subframe occupied by each UE in the cell according to the SRS configuration index parameter according to the subframe set corresponding to the SRS subframe configuration parameter of the current cell.

2、根据权利要求 1所述的方法，其特征在于，所述步骤 e之后进一步包括： 2. The method according to claim 1, wherein the step e further comprises:

3、根据权利要求 1或 2所述的方法，其特征在于，所述步骤 d和 e 之间进一步包括： X、判断具有协作关系的各小区间的 SRS子帧配置参数的配置是否正交，如果不是，则按照使协作小区的非多点协作 UE的 SRS子帧配置与服务小区的多点协作 UE的 SRS子帧配置相正交的原则，设置所述具有协作关系的各小区的非多点协作 UE的 SRS子帧配置范围和多点协作 UE的 SRS子帧配置范围； The method according to claim 1 or 2, wherein the step d and e further comprise: X. Determine whether the configuration of the SRS subframe configuration parameter between the cells having the cooperative relationship is orthogonal, if not, the SRS subframe configuration of the non-multi-point coordinated UE of the coordinated cell and the multi-point coordinated UE of the serving cell. The principle that the SRS subframe configuration is orthogonal, the SRS subframe configuration range of the non-multipoint coordinated UE of each cell having the cooperative relationship and the SRS subframe configuration range of the coordinated UE are set;

所述步骤 e为： The step e is:

对于每个小区，如杲在步骤 X中设置了本小区的非多点协作 UE的 SRS子帧配置范围和多点协作 UE的 SRS子帧配置范围，则在本小区的所述非多点协作 UE子帧配置范围内，通过 SRS配置索引参数设置本小区内各非多点协作 UE占用的 SRS子帧，在本小区的多点协作 UE子帧配置范围内 , 通过 SRS配置索引参数设置本小区内各多点协作 UE占用的 SRS子帧；否则，在本小区的 SRS子帧配置参数所对应的子帧集合范围内，通过 SRS配置索引参数设置本小区内各 UE占用的 SRS子帧。 For each cell, if the SRS subframe configuration range of the non-multipoint coordinated UE of the current cell and the SRS subframe configuration range of the coordinated UE are set in step X, the non-multipoint cooperation in the cell is performed. In the UE subframe configuration range, the SRS configuration index parameter is used to set the SRS subframe occupied by each non-multi-point coordinated UE in the current cell, and the local area is configured in the multi-point coordinated UE subframe configuration range of the current cell, and the local resource is set by using the SRS configuration index parameter. The SRS sub-frames occupied by the UEs in the own cell are set in the SRS configuration index parameter in the range of the subframe set corresponding to the SRS sub-frame configuration parameter of the current cell.

4、根据权利要求 3所述的方法，其特征在于，设置所述具有协作关系的各小区的非多点协作 UE的 SRS子帧配置范围和多点协作 UE的 SRS子帧配置范围为： The method according to claim 3, wherein the SRS subframe configuration range of the non-multipoint coordinated UEs of the cells having the cooperative relationship and the SRS subframe configuration range of the coordinated UE are:

对于所述具有协作关系的 /个小区中的 |(^.|最大的小区 max , 将皿 - υ( ^_χ η α^)作为该小区的多点协作 UE 的 SRS 子帧配置，将 For the |[^.|maximum cell max in the cell with the cooperative relationship, the dish--(^ _χ η α^) is configured as the SRS subframe of the multi-point coordinated UE of the cell,

CF^ - u (C ^ n C^)作为该小区的非多点协作 UE的 SRS子帧配置， i'er且 CF^ - u (C ^ n C^) is used as the SRS subframe configuration of the non-multipoint coordinated UE of the cell, i'er and

其中， c^;为小区 /的 SRS子帧配置参数对应的子帧集合， | ^_χ| > |<^| ,Wherein, c^; is a subframe set corresponding to the configuration parameter of the cell/SRS subframe, |^ _χ | >|<^|

^ ^，… ，且^！！^，^^为小区^的 SRS子帧配置参数对应的子帧集合中的子帧数量， Γ ={ ρ：小区 _max中有以小区 _p为协作小区的多点协作 UE} , ={ ¾：小区 g中有小区 max以为协作小区的多点协作 UE}； ^ ^,... , and ^! ! ^, ^^ is the number of subframes in the subframe set corresponding to the SRS subframe configuration parameter of the cell ^, Γ = { ρ: the cell _max has a multi-point coordinated UE with the cell _p as the coordinated cell}, ={ 3⁄4: In the cell g, there is a cell max as a coordinated multi-point UE of the coordinated cell};

对于所述具有协作关系的 I个小区中除小区 max之外的其他的每个小区 i ,将本小区的非多点协作 UE的 SRS子帧配置范围和多点协作 UE 的 SRS子帧配置范围均设置为本小区的 SRS子帧配置参数所对应的子帧集合 α^。 For each of the I cells having the cooperative relationship except for the cell max The cell i is configured to set the SRS subframe configuration range of the non-multi-point coordinated UE of the current cell and the SRS subframe configuration range of the multi-point coordinated UE to the subframe set α^ corresponding to the SRS subframe configuration parameter of the cell.

5、一种探测参考信号（SRS ) 的配置方法，其特征在于，该方法包括以下步骤： 5. A method for configuring a sounding reference signal (SRS), the method comprising the steps of:

b、从 SRS子帧配置参数的所有具有正交配置的配置中选择三种以上的配置，对所选择的配置进行分组，得到三组 SRS子帧配置参数的配置；其中，每组中的配置均与其他两组中的配置相正交； b. Select three or more configurations from all configurations with orthogonal configurations of the SRS subframe configuration parameters, and group the selected configurations to obtain configuration of three sets of SRS subframe configuration parameters; wherein, the configuration in each group Both are orthogonal to the configurations in the other two groups;

e、各小区根据本小区的 SRS子帧配置参数所对应的子帧集合，通过 SRS配置索引参数设置本小区内各 UE占用的 SRS子帧。 e. Each cell sets an SRS subframe occupied by each UE in the cell according to the SRS configuration index parameter according to the subframe set corresponding to the SRS subframe configuration parameter of the current cell.

6、根据权利要求 5所述的方法，其特征在于，所述步骤 e之后进一步包括： 6. The method according to claim 5, wherein the step e further comprises:

将本小区内的多点协作 UE所占用的 SRS子帧通知给所述多点协作 UE的协作小区 ,所述协作小区在调度其小区内的 UE时，避免在所述多点协作 UE所占用的 SRS子帧上的最后一个符号上发送上行数据。 Notifying the coordinated cell of the multi-point coordinated UE that is occupied by the multi-point coordinated UE in the cell, the coordinated cell avoiding occupying by the multi-point coordinated UE when scheduling the UE in the cell The uplink data is transmitted on the last symbol on the SRS subframe.