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本发明涉及通信技术领域,特别涉及一种用于CoMP(Coordinative MultiplePoint,多点协作)方式的资源分配方法及基站。The present invention relates to the field of communication technology, in particular to a resource allocation method and a base station used in a CoMP (Coordinative Multiple Point, coordinated multi-point) mode.
背景技术Background technique
在现代通信系统,例如LTE-A(Long Term Evolution Advanced,进一步长期演进)系统中,边缘用户与服务小区的通信过程受邻居小区的严重干扰,而不能满足用户通信需要,为了解决这个问题,提出了协作多点传输(CoordinatedMultiple Point transmission and reception,简称CoMP)的技术,即各个邻居小区之间相互协作,共同为一个终端UE(User Equipment)或多个UE服务。In modern communication systems, such as LTE-A (Long Term Evolution Advanced, further long-term evolution) system, the communication process between edge users and serving cells is severely interfered by neighboring cells, which cannot meet the needs of user communication. In order to solve this problem, the proposed Coordinated Multiple Point transmission and reception (CoMP for short) technology, that is, each neighboring cell cooperates with each other to jointly serve a terminal UE (User Equipment) or multiple UEs.
LTE-A支持的CoMP方式主要有:CBF(Coordinative Beam Form,协同波束成形)、Coherent JP(Coherent Join Process,相关联合处理)和Non-Coherent JP(Non-Coherent Join Process,非相关联合处理)。不同CoMP方式对时频资源的占用情况和对用户数据速率的提升程度不同。The CoMP methods supported by LTE-A mainly include: CBF (Coordinative Beam Form, coordinated beamforming), Coherent JP (Coherent Join Process, related joint processing) and Non-Coherent JP (Non-Coherent Join Process, non-correlated joint processing). Different CoMP methods occupy different time-frequency resources and improve the user data rate in different degrees.
在实现本发明的过程中,发明人发现现有技术至少存在以下问题:相邻小区在交叠区域有多段公共的可用时频块,如果在这个交叠区域中同时有多个用户需要进行CoMP,如何为这些用户的终端选择CoMP的时频资源就成为一个问题。In the process of implementing the present invention, the inventor found that the prior art has at least the following problems: adjacent cells have multiple common available time-frequency blocks in the overlapping area, if there are multiple users in the overlapping area at the same time need to perform CoMP , how to select CoMP time-frequency resources for the terminals of these users becomes a problem.
发明内容Contents of the invention
为了为多用户选择适当的时频块和CoMP方式,满足每个用户的数据速率需求,本发明实施例提供了一种用于多点协作(CoMP)方式的资源分配方法及基站。In order to select an appropriate time-frequency block and CoMP mode for multiple users and meet the data rate requirement of each user, the embodiment of the present invention provides a resource allocation method and a base station for a coordinated multi-point (CoMP) mode.
所述用于CoMP方式的资源分配方法包括:接收多个小区的重叠区域内用户设备UE的测量信息;根据所述UE的测量信息,确定所述UE在各可选时频块上的各可选CoMP方式;确定所述UE在所述各可选时频块上采用所述各可选CoMP方式时的数据速率和度;根据所述UE在所述各可选时频块上采用所述各可选CoMP方式、在所述各可选时频块上采用所述各可选CoMP方式时的数据速率和度,为所述UE进行资源分配;The resource allocation method for the CoMP method includes: receiving measurement information of a user equipment UE in an overlapping area of multiple cells; according to the measurement information of the UE, determining each possible Select a CoMP mode; determine the data rate and degree of the UE when using the optional CoMP mode on the optional time-frequency block; according to the UE using the optional time-frequency block on the performing resource allocation for the UE in each optional CoMP mode, the data rate and degree when the optional CoMP mode is adopted on each optional time-frequency block;
其中,所述根据所述UE的测量信息,确定所述UE在各可选时频块上的各可选CoMP方式包括:Wherein, the determining each optional CoMP mode of the UE on each optional time-frequency block according to the measurement information of the UE includes:
根据所述UE的测量信息中包含的每个小区在该UE的各可用时频块上的下行信道响应信息、每个小区在该UE的各可用时频块上发送的信号、以及在所述各可选CoMP方式下每个小区所发送信号对该UE作用,计算所述UE在所述各可用时频块上采用所述各可用CoMP方式时的数据速率;According to the downlink channel response information of each cell on each available time-frequency block of the UE contained in the measurement information of the UE, the signal sent by each cell on each available time-frequency block of the UE, and the The signals sent by each cell in each optional CoMP mode act on the UE, and calculate the data rate of the UE when using the available CoMP modes on the available time-frequency blocks;
若所述UE在一可用时频块上采用一可用CoMP方式时的数据速率在该UE的数据速率需求范围内,则确定所述可用时频块上采用所述CoMP方式为所述UE的可选时频块上采用的可选CoMP方式。If the data rate of the UE using an available CoMP method on an available time-frequency block is within the data rate requirement range of the UE, determine that the CoMP method used on the available time-frequency block is an available time-frequency block for the UE. Select the optional CoMP method adopted on the time-frequency block.
本发明实施例还提供一种基站,该基站包括:该基站包括:接收模块、可选CoMP方式确定模块、度确定模块以及分配模块;其中,An embodiment of the present invention also provides a base station, where the base station includes: the base station includes: a receiving module, an optional CoMP mode determination module, a degree determination module, and an allocation module; wherein,
接收模块,用于接收多个小区的重叠区域内用户设备UE的测量信息;A receiving module, configured to receive measurement information of a user equipment UE in an overlapping area of multiple cells;
可选CoMP方式确定模块,用于根据所述UE的测量信息,确定所述UE在各可选时频块上的各可选CoMP方式;An optional CoMP mode determination module, configured to determine each optional CoMP mode of the UE on each optional time-frequency block according to the measurement information of the UE;
度确定模块,确定所述UE在所述各可选时频块上采用所述各可选CoMP方式时的数据速率和度;A degree determination module, which determines the data rate and degree when the UE adopts the optional CoMP methods on the optional time-frequency blocks;
分配模块,用于根据所述UE在所述各可选时频块上采用所述各可选CoMP方式、在所述各可选时频块上采用所述各可选CoMP方式时的数据速率和度,为所述UE进行资源分配;An allocation module, configured to use the optional CoMP methods on the optional time-frequency blocks according to the data rate when the UE adopts the optional CoMP methods on the optional time-frequency blocks and degree, performing resource allocation for the UE;
其中,所述可选CoMP方式确定模块包括:Wherein, the optional CoMP mode determination module includes:
计算单元,用于根据所述UE的测量信息中包含的每个小区在该UE的各可用时频块上的下行信道响应信息、每个小区在该UE的各可用时频块上发送的信号、以及在所述各可选CoMP方式下每个小区所发送信号对该UE作用,计算所述UE在所述各可用时频块上采用所述各可用CoMP方式时的数据速率;a calculation unit, configured to use the downlink channel response information of each cell on each available time-frequency block of the UE included in the measurement information of the UE, and the signal sent by each cell on each available time-frequency block of the UE , and the signals sent by each cell in the various optional CoMP modes act on the UE, and calculate the data rate when the UE adopts the available CoMP modes on the available time-frequency blocks;
确定单元,用于若所述UE在一可用时频块上采用一可用CoMP方式时的数据速率在该UE的数据速率需求范围内,则确定所述可用时频块上采用所述CoMP方式为所述UE的可选时频块上采用的可选CoMP方式。A determining unit, configured to determine that the CoMP method used on the available time-frequency block is The optional CoMP mode adopted on the optional time-frequency block of the UE.
本发明实施例提供的技术方案带来的有益效果是:通过提供一种用于多点协作CoMP方式的资源分配方法及基站,以为用户分配时频资源和CoMP方式,能最大限度地满足每个用户的数据速率需求。The beneficial effect brought by the technical solution provided by the embodiment of the present invention is: by providing a resource allocation method and a base station for coordinated multi-point CoMP mode, allocating time-frequency resources and CoMP mode for users, it can satisfy each The user's data rate requirements.
附图说明Description of drawings
图1为本发明实施例1中提供的一种用于多点协作(CoMP)方式的资源分配方法的流程示意图;FIG. 1 is a schematic flowchart of a method for resource allocation in a coordinated multi-point (CoMP) manner provided in
图2为本发明实施例2中提供的一种用于多点协作(CoMP)方式的资源分配方法的流程示意图;FIG. 2 is a schematic flowchart of a method for resource allocation in a coordinated multi-point (CoMP) manner provided in Embodiment 2 of the present invention;
图3为本发明实施例3中提供的一种基站的结构示意图;FIG. 3 is a schematic structural diagram of a base station provided in Embodiment 3 of the present invention;
图4为本发明实施例3的基站中的可选CoMP方式确定模块的结构示意图;FIG. 4 is a schematic structural diagram of an optional CoMP mode determination module in a base station according to Embodiment 3 of the present invention;
图5为本发明实施例3的基站中的度确定模块的结构示意图;FIG. 5 is a schematic structural diagram of a degree determination module in a base station according to Embodiment 3 of the present invention;
图6为本发明实施例3的基站中的分配模块的结构示意图;6 is a schematic structural diagram of an allocation module in a base station according to Embodiment 3 of the present invention;
图7为本发明实施例3中提供的一种用于多点协作CoMP方式的资源分配方法的模型示意图。FIG. 7 is a schematic diagram of a model of a method for resource allocation in a coordinated multi-point CoMP manner provided in Embodiment 3 of the present invention.
具体实施方式Detailed ways
为使本发明的目的、技术方案和优点更加清楚,下面将结合附图对本发明实施方式作进一步地详细描述。In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.
实施例1Example 1
一种用于多点协作CoMP方式的资源分配方法,参见图1,该方法包括以下步骤:A resource allocation method for coordinated multi-point CoMP mode, referring to Figure 1, the method includes the following steps:
101:接收多个小区的重叠区域内用户设备UE的测量信息;101: Receive measurement information of a user equipment UE in an overlapping area of multiple cells;
102:根据所述UE的测量信息,确定所述UE在各可选时频块上的各可选CoMP方式;102: Determine each optional CoMP mode of the UE on each optional time-frequency block according to the measurement information of the UE;
103:确定所述UE在所述各可选时频块上采用所述各可选CoMP方式时的数据速率和度。103: Determine the data rate and rate when the UE adopts each optional CoMP manner on each optional time-frequency block.
104:根据所述UE在所述各可选时频块上采用所述各可选CoMP方式、在所述各可选时频块上采用所述各可选CoMP方式时的数据速率和度,为所述UE进行资源分配。104: According to the data rate and rate when the UE adopts the optional CoMP methods on the optional time-frequency blocks and adopts the optional CoMP methods on the optional time-frequency blocks, Perform resource allocation for the UE.
本发明实施例提供的技术方案带来的有益效果是:本发明实施例提供的技术方案带来的有益效果是:通过提供一种用于多点协作CoMP方式的资源分配方法及基站,以为用户分配时频资源和CoMP方式,能最大限度地满足每个用户的数据速率需求。The beneficial effect brought by the technical solution provided by the embodiment of the present invention is: the beneficial effect brought by the technical solution provided by the embodiment of the present invention is: by providing a resource allocation method and a base station for coordinated multi-point CoMP mode, for the user Allocating time-frequency resources and CoMP mode can meet the data rate requirements of each user to the greatest extent.
实施例2Example 2
参见图2,本发明实施例提供了一种用于多点协作CoMP方式的资源分配方法,在本实施例中,以两个小区(小区1和小区2)的重叠区域的i个用户设备UE(这i个UE的服务小区为小区1或小区2)为例,为该i个UE分配可选的时频块以及可选CoMP方式,其中i为重叠区域的用户设备(UE)的个数。Referring to FIG. 2 , an embodiment of the present invention provides a resource allocation method for coordinated multi-point CoMP. In this embodiment, i user equipment UEs in the overlapping area of two cells (
步骤201:接收重叠小区内各个待分配资源的用户设备UE的测量信息:Step 201: Receive measurement information of each user equipment UE to be allocated resources in the overlapping cell:
服务小区将重叠区域中可以用于CoMP方式的可用时频块的时频位置、带宽以及服务小区在这些时频块上的发射功率信息发送给重叠区域中的属于该服务小区的UE,即,小区1将上述信息发送给属于小区1的UE,小区2将上述信息发送给属于小区2的UE。The serving cell sends the time-frequency position and bandwidth of the available time-frequency blocks that can be used in the CoMP mode in the overlapping area, and the transmit power information of the serving cell on these time-frequency blocks to UEs belonging to the serving cell in the overlapping area, that is,
重叠区域中的各个UE接收到上述信息后,测量相应时频块上的下行信道响应以及噪声功率等信息,并将这些测量信息汇报给各自的服务小区,本实施例对测量信息的内容不做限定,服务小区接收到各自的UE的测量信息。After receiving the above information, each UE in the overlapping area measures information such as downlink channel response and noise power on the corresponding time-frequency block, and reports these measurement information to their respective serving cells. It is defined that the serving cell receives the measurement information of the respective UE.
步骤202:根据所述UE的测量信息,确定所述UE在各可选时频块上的各可选CoMP方式;Step 202: Determine each optional CoMP mode of the UE on each optional time-frequency block according to the measurement information of the UE;
根据所述UE的测量信息中包含的每个小区在该UE的各可用时频块上的下行信道响应信息、每个小区在该UE的各可用时频块上发送的信号、以及在所述各可选CoMP方式下每个小区所发送信号对各个UE作用,计算所述UE在所述各可用时频块上采用所述各可用CoMP方式时的数据速率;According to the downlink channel response information of each cell on each available time-frequency block of the UE contained in the measurement information of the UE, the signal sent by each cell on each available time-frequency block of the UE, and the The signals sent by each cell in each optional CoMP mode act on each UE, and calculate the data rate of the UE when using the available CoMP modes on the available time-frequency blocks;
若所述UE在一可用时频块上采用一可用CoMP方式时的数据速率在该UE的数据速率需求范围内,则确定所述可用时频块上采用所述CoMP方式为所述UE的可选时频块上采用可选的CoMP方式。本发明的实施例中,所述“可用时频块”以及“可用CoMP方式”指的是一个UE的候选时频块和CoMP方式,这些资源不一定能满足UE的需求,当这些资源能满足UE需求时其将成为UE的可选资源,即UE可以选择使用这些可选的资源以进行工作。If the data rate of the UE using an available CoMP method on an available time-frequency block is within the data rate requirement range of the UE, determine that the CoMP method used on the available time-frequency block is an available time-frequency block for the UE. An optional CoMP method is adopted on the selected time-frequency block. In the embodiments of the present invention, the "available time-frequency block" and "available CoMP mode" refer to the candidate time-frequency block and CoMP mode of a UE. These resources may not meet the needs of the UE. When these resources can meet the When required by the UE, it will become an optional resource of the UE, that is, the UE can choose to use these optional resources for work.
仍以上述示例为例,小区1根据接收到的属于小区1的各个UE所发送的测量信息(该测量信息包括各个UE在各个可用时频块上的下行信道响应信息、每个小区在属于小区1的各个待分配资源的UE的可用时频块上发送的有用信号),并且根据各种可选CoMP方式下小区2对小区1的作用(例如,此种情况下,小区2是作为协作小区或是干扰小区,由于协作小区和干扰小区所发射的信号对属于小区1的UE的接收信号的作用是不同的),通过下面详细描述时所用的计算公式,可以计算出属于小区1的各个待分配资源的UE在每个可用时频块上采用每种可选CoMP方式下,所能达到的数据速率;将属于小区1的各个待分配资源的UE在每个可用时频块上采用每种CoMP方式所能达到的数据速率与所述待分配资源的UE的数据速率需求范围相比较,如果所述数据速率包含在所述待分配资源的UE的数据速率需求范围内,则所述CoMP方式为所述待分配资源的UE在所述可用时频块上的可选CoMP方式。Still taking the above example as an example,
对每个UE遍历所有的可用时频块和在该可用时频块的可选CoMP方式,小区1为属于小区1的每个UE确定出在每个可用时频块上的可选CoMP方式。For each UE, traverse all available time-frequency blocks and selectable CoMP modes in the available time-frequency blocks, and
与上述计算过程类似,小区2也为属于小区2的每个UE确定出在每个可用时频块上的可选CoMP方式。Similar to the above calculation process, cell 2 also determines an optional CoMP mode on each available time-frequency block for each UE belonging to cell 2 .
下面将具体描述小区1和小区2分别为属于本小区的每个UE确定出在每个可用时频块上的可选CoMP方式的过程:The following will specifically describe the process of
为了便于描述,将本实施例的可选CoMP方式表述如下:For ease of description, the optional CoMP mode of this embodiment is expressed as follows:
本实施例的可选CoMP方式包括协同波束成形CBF、相关联合处理Coherent JP和非相关联合处理Non-Coherent JP。The optional CoMP mode in this embodiment includes coordinated beamforming CBF, correlated joint processing Coherent JP and non-correlated joint processing Non-Coherent JP.
将CoMP方式编号规则定义如下:The CoMP mode numbering rules are defined as follows:
假设第j个可用时频块为SP(j),则在SP(j)上进行CBF可表示为:CoMP(x),其中x=(j-1)*3+1;Assuming that the jth available time-frequency block is SP(j), performing CBF on SP(j) can be expressed as: CoMP(x), where x=(j-1)*3+1;
在SP(j)上进行Coherent JP可表示为:CoMP(x),其中x=(j-1)*3+2;Coherent JP on SP(j) can be expressed as: CoMP(x), where x=(j-1)*3+2;
在SP(j)上进行Non-Coherent JP可表示为:CoMP(x),其中x=j*3。Performing Non-Coherent JP on SP(j) can be expressed as: CoMP(x), where x=j*3.
将第i个用户设备UE(i)的服务小区设定为eNB(k)(k为参与CoMP方式的小区的编号,我们这里以两小区协作为例,则k为1或2);Set the serving cell of the i-th user equipment UE(i) as eNB(k) (k is the number of the cell participating in the CoMP mode, here we take the cooperation of two cells as an example, then k is 1 or 2);
服务小区eNB(k)接收的属于eNB(k)的第i个UE(表示为UE(i))的测量信息包括了UE(i)在eNB(k)中、第j个可用时频块上的下行信道响应Hj,k,i,(k为1和/或2)以及在各时频块上的噪声功率σ2i,j。The measurement information of the i-th UE (denoted as UE(i)) belonging to the eNB(k) received by the serving cell eNB(k) includes the UE(i) in the eNB(k) on the j-th available time-frequency block The downlink channel response Hj,k,i , (k is 1 and/or 2) and the noise power σ2i,j on each time-frequency block.
下面分别详细描述为重叠小区中的UE确定各种可选的CoMP方式的具体过程:The specific process of determining various optional CoMP modes for UEs in overlapping cells is described in detail below:
a)确定UE(i)在可用时频块SP(j)上能否进行CBF方式a) Determine whether UE(i) can perform CBF on the available time-frequency block SP(j)
在下面的示例中都假设UE(i)的服务小区eNB(k)为小区1,即k=1,在可选CoMP方式为CBF方式下,而小区2在相同时频块上发送的下行信号对UE(i)来说是干扰。In the following examples, it is assumed that the serving cell eNB(k) of UE(i) is
利用公式(1),对在时频块SP(j)上小区1到UE(i)的下行信道响应Hj,1,i进行SVD分解。Using formula (1), perform SVD decomposition on the downlink channel response Hj,1,i from
Hj,1,i=UΛVH (1)Hj,1,i = UΛVH (1)
式中,Hj,1,i为N*M矩阵,U和V分别为N*N和M*M的酉矩阵,Λ为N*M矩阵,其对角线元素是非负实数,非对角线元素为0,且Λ的对角线元素从上到下为从大到小排列的Hj,1,i的奇异值。这样得到的矩阵V即为Hj,1,i对应的线性预编码矩阵Vj,1,i。为UE(i)选择V中与最大奇异值对应的列向量,作为它的预编码向量U(j,1,i)。在本发明全部实施例,一个表达式括号中的字母与表达式的下标都用于表达该表达式的变量,二者并无实质差异。例如,Hj,1,i与H(j,1,i)表达的含义相同。In the formula, Hj, 1, i are N*M matrices, U and V are unitary matrices of N*N and M*M respectively, Λ is an N*M matrix, and its diagonal elements are non-negative real numbers, non-diagonal The line elements are 0, and the diagonal elements of Λ are the singular values of Hj, 1, i arranged from large to small from top to bottom. The matrix V thus obtained is the linear precoding matrix Vj,1,i corresponding to H j,1,i . Select the column vector corresponding to the largest singular value in V for UE(i) as its precoding vector U(j, 1, i). In all embodiments of the present invention, the letters in the parentheses of an expression and the subscript of the expression are both used to express the variables of the expression, and there is no substantial difference between the two. For example, Hj, 1, i has the same meaning as H(j, 1, i).
利用公式(2),计算UE(i)解调输出的小区1发送的有用信号的信干噪比SINRj,1,i。Using the formula (2), calculate the signal-to-interference-noise ratio SINRj,1,i of the useful signal sent by the
由于小区1是UE(i)的服务小区,小区2在相同时频块上发送的下行信号对UE(i)产生干扰作用,所以UE(i)在相同时频块的有用信号的总信干噪比SINRi,x与小区1在相同时频块的有用信号的信干噪比SINRj,1,i相等。Since
式中,分子为UE(i)接收到的小区1发送的有用信号功率,分母第一项为假设在小区2有用户I*也使用SP(j)进行CBF时,小区2发送下行信号对UE(i)造成的干扰功率,分母第二项为UE(i)在SP(j)处的噪声功率。In the formula, the numerator is the useful signal power sent by
利用公式(3),可得到小区1发送的有用信号数据速率Rj,1,i,在此情景下,假设理想情况下协作小区2造成的干扰为零,这样,有用信号的总数据速率Using formula (3), the data rate Rj,1,i of the useful signal sent by
CoRi,x与小区1在相同时频块的数据速率Rj,1,i相等。CoRi,x is equal to the data rate Rj,1,i of
其中B(j)为第j个可用时频块SP(j)的带宽,x=(j-1)*3+1。Where B(j) is the bandwidth of the jth available time-frequency block SP(j), x=(j-1)*3+1.
若CoRi,x在UE(i)的数据速率需求范围R(i)内(UE(i)的数据速率需求范围为预定值),则UE(i)在时频块SP(j)的可选CoMP方式为CBF,即,CoMPi,x=1,(其中x=(j-1)*3+1)。If CoRi, x is within UE(i)'s data rate requirement range R(i) (UE(i)'s data rate requirement range is a predetermined value), then UE(i) can The CoMP mode is selected as CBF, that is, CoMPi, x =1, (where x=(j-1)*3+1).
若CoRi,x不在UE(i)的数据速率需求范围R(i)内,则UE(i)不能选择CBF方式,即,CoMPi,x=0,其中(x=(j-1)*3+1)。If CoRi, x is not within the data rate requirement range R(i) of UE(i), UE(i) cannot select the CBF method, that is, CoMPi, x = 0, where (x=(j-1)* 3+1).
b)确定UE(i)在可用时频块SP(j)上能否进行Coherent JPb) Determine whether UE(i) can perform Coherent JP on the available time-frequency block SP(j)
这种方式下,小区1和小区2都为UE(i)服务,小区1和小区2同步发送相同的数据给UE(i),即,两个小区发送的信号在UE(i)端进行合并。In this way,
利用上述公式(1),对在时频块SP(j)上,小区1和小区2到UE(i)的下行信道响应Hj,1,i和Hj,2,i分别进行SVD分解,得到小区1应使用的预编码向量Uj,1,i和小区2应使用的预编码向量Uj,2,i。Using the above formula (1), perform SVD decomposition on the downlink channel responses Hj, 1, i and Hj, 2, i of
利用公式(5),计算UE(i)的有用信号的总信干噪比SINRi,x,(其中x=(j-1)*3+2)。Using formula (5), calculate the total signal-to-interference-noise ratio SINRi,x of the useful signal of UE(i), (where x=(j-1)*3+2).
式中,分子为UE(i)接收到的小区1和小区2发送的有用信号功率之和,分母为SP(j)在UE(i)处的噪声功率,In the formula, the numerator is the sum of the useful signal power received by UE(i) from
由于Coherent JP规定只能分配给一个用户,所以不存在其它用户造成的同频干扰。Since Coherent JP stipulates that it can only be allocated to one user, there is no co-channel interference caused by other users.
利用公式(6),可计算出UE(i)采用Coherent JP方式所能达到的数据速率CoRi,x:Using formula (6), the data rate CoRi,x that can be achieved by UE(i) using the Coherent JP method can be calculated:
CoRi,x=Bj*log(1+SINRi,x) (6)CoRi,x = Bj *log(1+SINRi,x ) (6)
其中B(j)为第j个可用时频块SP(j)的带宽,x=(j-1)*3+2。Where B(j) is the bandwidth of the jth available time-frequency block SP(j), x=(j-1)*3+2.
若CoRi,x在UE(i)的数据速率需求范围R(i)内,则UE(i)在时频块SP(j)上的可选CoMP方式为Coherent JP,即,CoMPi,x=1,(其中x=(j-1)*3+2)。If CoRi, x is within the data rate requirement range R(i) of UE(i), then the optional CoMP method of UE(i) on the time-frequency block SP(j) is Coherent JP, that is, CoMPi, x =1, (where x=(j-1)*3+2).
若CoRi,x不在UE(i)的数据速率需求范围R(i)内,则UE(i)在时频块SP(j)上不能选择Coherent JP方式,CoMPi,x=0(其中x=(j-1)*3+2)。If CoRi, x is not within the data rate requirement range R(i) of UE(i), UE(i) cannot select Coherent JP mode on time-frequency block SP(j), CoMPi, x = 0 (where x =(j-1)*3+2).
c)确定UE(i)在可用时频块SP(j)上能否进行Non-Coherent JP方式c) Determine whether UE(i) can perform Non-Coherent JP mode on the available time-frequency block SP(j)
在这种方式下,为UE(i)(服务小区为小区1)服务的有小区1和小区2,两个小区发送不同的数据给UE(i),两路信号会有相互干扰。In this way, there are
首先,分别对在时频块SP(j)上,小区1和小区2到UE(i)的下行信道响应Hj,1,i和Hj,2,i进行SVD分解,得到在这种CoMP方式下,小区1应使用的预编码向量Uj,1,i以及小区2应使用的预编码向量Uj,2,i。First, on the time-frequency block SP(j), the downlink channel responses Hj, 1, i and Hj, 2, i of
在这种方式下,两个小区发送的信号在UE(i)端是分别解调的,分别利用公式(7)和公式(8),计算两路信号解调输出的信干噪比SINRj,1,i和SINRj,2,i。In this way, the signals sent by the two cells are demodulated separately at the UE(i) side, and the SINRj of the demodulated output of the two signals is calculated using formula (7) and formula (8) respectively, 1, i and SINRj, 2, i .
式(7)中,分子为UE(i)接收到的小区1发送的有用信号功率,分母第一项为小区2发送的信号对解调小区1发送的信号造成的干扰功率,分母第二项为SP(j)在UE(i)处的噪声功率。式(8)中变量的含义与式(7)类似。In formula (7), the numerator is the useful signal power sent by
分别利用公式(9)和公式式(10),计算两路信号的数据速率Rj,1,i和Rj,2,iUse formula (9) and formula (10) respectively to calculate the data rate Rj, 1, i and Rj, 2, i of the two signals
Rj,1,i=Bj*log(1+SINRj,i,i) (9)Rj,1,i =Bj *log(1+SINRj,i,i ) (9)
Rj,2,i=Bj*log(1+SINRj,2,i) (10)Rj,2,i = Bj *log(1+SINRj,2,i ) (10)
其中B(j)为第j个可用时频块SP(j)的带宽。Where B(j) is the bandwidth of the jth available time-frequency block SP(j).
利用公式(11),计算UE(i)采用这种CoMP方式所能达到的数据速率CoRi,x,CoRi,x为两路信号数据速率之和:Using formula (11), calculate the data rate CoRi,x that UE(i) can achieve by adopting this CoMP method, where CoRi,x is the sum of the data rates of the two signals:
CoRi,x=Rj,1,i+Rj,2,i=Bj*[log(1+SINRj,1,i)+log(1+SINRj,2,i)] (11)CoRi,x =Rj,1,i +Rj,2,i =Bj *[log(1+SINRj,1,i )+log(1+SINRj,2,i )] (11)
其中B(j)为第j个可用时频块SP(j)的带宽,(其中x=j*3)。Wherein B(j) is the bandwidth of the jth available time-frequency block SP(j), (where x=j*3).
若CoRi,x在UE(i)的数据速率R(i)需求范围内,则UE(i)可选Non-CoherentJP方式,即,CoMPi,x=1(其中x=j*3),UE在可用时频块SP(j)上的可选CoMP方式CoMPi,x所对应的数据速率为CoRi,x。If CoRi, x is within the required range of UE(i)'s data rate R(i), UE(i) can choose the Non-CoherentJP mode, that is, CoMPi, x = 1 (where x = j*3), The data rate corresponding to the optional CoMP mode CoMPi,x of the UE on the available time-frequency block SP(j) is CoRi,x .
若CoRi,x不在UE(i)的数据速率R(i)需求范围内,则UE(i)不能选择Non-Coherent JP方式,CoMPi,x=0(其中x=j*3)。If the CoRi,x is not within the required range of the data rate R(i) of the UE(i), the UE(i) cannot select the Non-Coherent JP mode, and CoMPi,x =0 (where x=j*3).
遍历所有的可用时频块和在该可用时频块的可选的CoMP方式(即求解得到所有的CoMPi,x其中x=0,1,2,...,(J*L-1),J为可用时频块的总数,L为可用的CoMP方式,在这里,L=3,得到所述未分配配资源的UE在所述可用时频块上的可选CoMP方式集合(即CoMPi,x=1的所有的x)。Traverse all available time-frequency blocks and the optional CoMP modes in the available time-frequency blocks (that is, solve all CoMPi, x where x=0, 1, 2, ..., (J*L-1) , J is the total number of available time-frequency blocks, and L is an available CoMP mode. Here, L=3, to obtain the set of optional CoMP modes (i.e. CoMPi, all x for which x =1).
经过上述步骤,对于重叠小区的每个UE确定了可用时频块上的可选的CoMP方式集合。Through the above steps, for each UE in the overlapping cell, an optional CoMP mode set on the available time-frequency block is determined.
步骤203:确定所述UE在所述各可选时频块上采用所述各可选CoMP方式时的度;Step 203: Determine the degrees of the UE when using the optional CoMP methods on the optional time-frequency blocks;
如果所述可选时频块上采用所述可选CoMP方式为协同波束成形CBF,则所述UE在可选时频块上采用可选CoMP方式为CBF的度为与所述UE属于同一个小区并且在相同可选时频块上采用的可选CoMP方式为CBF的其它UE的数量;If the optional CoMP mode is adopted as coordinated beamforming CBF on the optional time-frequency block, the UE adopts the optional CoMP mode as CBF on the optional time-frequency block to belong to the same The cell and the number of other UEs whose optional CoMP mode is CBF adopted on the same optional time-frequency block;
如果所述可选时频块上采用所述可选CoMP方式为相关联合处理CoherentJP,则所述UE在可选时频块上采用可选CoMP方式为Coherent JP的度为与所述UE存在相同可选时频块上采用的可选CoMP方式为Coherent JP的其它UE的数量;If the optional CoMP method is used on the optional time-frequency block to jointly process Coherent JP, the degree of the UE using the optional CoMP method to be Coherent JP on the optional time-frequency block is the same as that of the UE The number of other UEs whose optional CoMP mode is Coherent JP adopted on the optional time-frequency block;
如果所述可选时频块上采用所述可选CoMP方式为非相关联合处理Non-Coherent JP,则所述UE在可选时频块上采用可选CoMP方式为Non-Coherent JP的度为与所述UE存在相同可选时频块上采用的可选CoMP方式为Non-Coherent JP的其它UE的数量。If the optional CoMP method is adopted on the optional time-frequency block to non-correlated joint processing of Non-Coherent JP, then the UE adopts the optional CoMP method to Non-Coherent JP on the optional time-frequency block. The number of other UEs that adopt the optional CoMP method of Non-Coherent JP on the same optional time-frequency block as the UE.
承接上面的示例,在为重叠小区的待分配资源的UE(i)确定了可用时频块上可选CoMPi,x方式之后,为所述每个待分配资源的UE确定了可用时频块上可选CoMPi,x方式的度。Following the above example, after the optional CoMPi, x mode on the available time-frequency block is determined for the UE(i) to be allocated resources in the overlapping cell, the available time-frequency block is determined for each UE(i) to be allocated resources The degree of optional CoMPi, x mode.
如果该UE的可用时频块上可选CoMP方式为CBF,那么该UE的可用时频块上可选CoMP方式为CBF的度是:与该UE属于同一个小区并且相同可用时频块上可选CoMP方式为CBF的其它未分配资源的UE的数量。If the optional CoMP method on the available time-frequency block of the UE is CBF, then the degree to which the optional CoMP method on the available time-frequency block of the UE is CBF is: it belongs to the same cell as the UE and is available on the same available time-frequency block The number of UEs whose CoMP mode is CBF and other unallocated resources.
如果该UE的可用时频块上可选CoMP方式为相关联合处理Coherent JP或非相关联合处理Non-Coherent JP,那么该UE的可用时频块上可选CoMP方式为相关联合处理Coherent JP或非相关联合处理Non-Coherent JP的度分别为在该所述可用时频块上可选CoMP方式为相关联合处理Coherent JP或非相关联合处理Non-Coherent JP的其它未分配资源的UE的数量和。If the optional CoMP mode on the available time-frequency block of the UE is related joint processing Coherent JP or non-related joint processing Non-Coherent JP, then the optional CoMP mode on the available time-frequency block of the UE is related joint processing Coherent JP or non-coherent JP The degree of associated joint processing of Non-Coherent JP is respectively the sum of the number of UEs whose CoMP mode can be associated with associated joint processing of Coherent JP or non-associated joint processing of Non-Coherent JP and other unallocated resources on the available time-frequency block.
为所述每个待分配资源的UE确定了可用时频块上可选CoMP(x)方式的度之后,下面描述为所述各个待分配资源的UE进行资源分配的具体过程:After the degree of optional CoMP(x) mode on the available time-frequency block is determined for each UE to be allocated resources, the specific process of resource allocation for each UE to be allocated resources is described below:
步骤204:根据所述UE在所述各可选时频块上采用所述各可选CoMP方式、在所述各可选时频块上采用所述各可选CoMP方式时的数据速率和度,为所述UE进行资源分配。Step 204: According to the data rate and degree when the UE adopts the optional CoMP methods on the optional time-frequency blocks and adopts the optional CoMP methods on the optional time-frequency blocks, , performing resource allocation for the UE.
如果未分配资源的UE具有可选时频块上采用可选CoMP方式,则计算所有未分配资源的UE的可选时频块上采用可选CoMP方式的数据速率与所述可选时频块上采用所述可选CoMP方式的度的比值,将最大比值所对应的可选时频块以及所述时频块上的可选CoMP方式分配给所述最大比值对应的UE;If the UE that does not allocate resources has an optional time-frequency block and adopts an optional CoMP method, then calculate the data rate and the optional time-frequency block that adopts an optional CoMP method on the optional time-frequency block of all UEs that are not allocated resources. adopting the degree ratio of the optional CoMP mode, and assigning the optional time-frequency block corresponding to the maximum ratio and the optional CoMP mode on the time-frequency block to the UE corresponding to the maximum ratio;
将所述UE从未分配资源的UE集合中删除;Deleting the UE from the set of UEs not allocated resources;
更新未分配资源的UE的可选时频块上采用可选CoMP方式,Update the optional CoMP method on the optional time-frequency block of the UE that has not allocated resources,
根据未分配资源的UE在所述各可选时频块上采用所述各可选CoMP方式、在所述各可选时频块上采用所述各可选CoMP方式时的数据速率和度,为所述未分配资源的UE进行资源分配;直到未分配资源的UE没有可选时频块上采用可选CoMP方式或所有UE都分配了可选时频块上采用可选CoMP方式为止。According to the data rate and rate when the UE that has not allocated resources adopts the optional CoMP methods on the optional time-frequency blocks and adopts the optional CoMP methods on the optional time-frequency blocks, Perform resource allocation for the UEs that have not been allocated resources; until the UEs that have not allocated resources adopt the optional CoMP method on no optional time-frequency block or all UEs are allocated optional time-frequency blocks and adopt the optional CoMP method.
以上面的示例为例,对当前所有未分配资源的UE,通过将所有未分配资源的UE的可用时频块上可选CoMP方式的数据速率和所述可用时频块上可选CoMP方式的度作比值运算,将最大比值所对应的可用时频块上可选CoMP方式分配给该最大比值所对应的UE,即,对该UE分配了可用时频块以及该可用时频块上的可选CoMP方式。将该UE从未分配资源的UE中删除。由于删除了已分配了资源的UE,需要利用上述方法,重新计算这些未分配资源的UE的可用时频块上可选CoMP方式的度;更新待分配资源UE的可用时频块上可选CoMP方式,之后,利用相同的方法为余下的未分配资源的UE进行资源分配,直到所有的UE都被分配了资源或者没有可用时频块或可选CoMP方式分配给待分配资源的UE。Taking the above example as an example, for all UEs that are currently not allocated resources, the data rate of the optional CoMP mode on the available time-frequency blocks of all UEs that are not allocated resources and the data rate of the optional CoMP mode on the available time-frequency blocks of all UEs that are not allocated resources The ratio operation is performed, and the optional CoMP mode on the available time-frequency block corresponding to the maximum ratio is allocated to the UE corresponding to the maximum ratio, that is, the available time-frequency block and the available time-frequency block on the available time-frequency block are allocated to the UE. Choose CoMP mode. The UE is deleted from UEs not allocated resources. Since the UEs that have been allocated resources are deleted, it is necessary to use the above method to recalculate the degree of optional CoMP on the available time-frequency blocks of these UEs that have not been allocated resources; update the optional CoMP on the available time-frequency blocks of the UEs to be allocated resources Then, use the same method to allocate resources for the remaining UEs that have not been allocated resources until all UEs are allocated resources or there is no available time-frequency block or optional CoMP to allocate resources to UEs to be allocated.
在更新余下的待分配资源UE的可选时频块上可选CoMP方式时,根据具体情况,确定是否将已分配的可选时频块上该可选CoMP方式从余下的待分配资源UE的可选时频块上可选CoMP方式中删除。When updating the optional CoMP mode on the remaining optional time-frequency blocks of the UE to be allocated resources, according to specific circumstances, determine whether to change the optional CoMP mode on the allocated optional time-frequency blocks Deleted in the optional CoMP mode on the optional time-frequency block.
所述更新待分配资源UE的可选时频块和相应的CoMP方式,具体包括:The update of the optional time-frequency block and the corresponding CoMP mode of the resource UE to be allocated specifically includes:
如果被分配的CoMP方式为Coherent JP或Non-Coherent JP,则将已分配的可选时频块和相应的CoMP方式从未分配资源的UE的可选时频块及其对应的CoMP方式中删除;If the allocated CoMP mode is Coherent JP or Non-Coherent JP, delete the allocated optional time-frequency block and corresponding CoMP mode from the optional time-frequency block and its corresponding CoMP mode of the UE that has not allocated resources ;
如果被分配的CoMP方式为CBF,并且未分配资源的UE与被分配资源的UE属于同一个服务小区,则将已分配的可选时频块和相应的CoMP方式从所述未分配资源UE的可选时频块及其对应的CoMP方式中删除;If the allocated CoMP mode is CBF, and the UE not allocated resources belongs to the same serving cell as the UE allocated resources, then the allocated optional time-frequency block and corresponding CoMP mode are transferred from the UE not allocated resources The optional time-frequency block and its corresponding CoMP method are deleted;
如果被分配的CoMP方式为CBF,并且未分配资源的UE与被分配资源的UE不属于同一个服务小区,则判断是否存在在相同时频块上进行CBF能够满足干扰容限并且满足自身的最小数据速率的UE,如果存在,则将已分配的可选时频块和相应的CoMP方式保留在所述待分配资源UE的可选时频块及其对应的CoMP方式中;否则,将已分配的可选时频块和相应的CoMP方式从所述待分配资源UE的可选时频块及其对应的CoMP方式中删除。If the allocated CoMP method is CBF, and the UE that is not allocated resources and the UE that is allocated resources do not belong to the same serving cell, it is judged whether performing CBF on the same time-frequency block can meet the interference tolerance and meet its own minimum If there is a UE with a data rate, the allocated optional time-frequency block and corresponding CoMP mode will be reserved in the optional time-frequency block and its corresponding CoMP mode of the resource UE to be allocated; otherwise, the allocated The optional time-frequency blocks and corresponding CoMP schemes are deleted from the optional time-frequency blocks and corresponding CoMP schemes of the UE to be allocated resources.
在更新余下的未分配资源UE的可选时频块上采用可选CoMP方式时,是否将已分配的可选时频块上该可选CoMP方式从余下的未分配资源UE的可选时频块上可选CoMP方式中删除,需要作进一步的判断:When updating the optional CoMP method on the remaining optional time-frequency blocks of unallocated UEs, whether to change the optional CoMP method on the allocated optional time-frequency blocks from the remaining optional time-frequency blocks of unallocated UEs Deletion in the optional CoMP mode on the block requires further judgment:
如果被分配的CoMP方式为CBF:If the assigned CoMP mode is CBF:
只有未分配资源的UE与被分配资源的UE属于同一个服务小区时,才不可以将已分配的可选时频块以及该时频块上CBF方式分配该未分配资源的UE,即,将已分配的可选时频块以及该时频块上的CBF方式从未分配资源的UE的该时频块上的CBF方式中删除。Only when the unallocated UE and the allocated resource belong to the same serving cell, the allocated optional time-frequency block and the CBF on the time-frequency block cannot be allocated to the unallocated resource UE, that is, the The allocated optional time-frequency block and the CBF mode on the time-frequency block are deleted from the CBF mode on the time-frequency block of the UE that has not allocated resources.
而当待分配资源的UE与被分配资源的UE属于不同的服务小区时,则利用公式(4),计算在服务小区为小区2的每个待分配资源的UE,如果也在该时频块上采用CBF方式,已分配资源的UE(假设服务小区为小区1)所属的服务小区(小区1)对小区2的干扰容限Ij,2,i,When the UE to be allocated resources and the UE to be allocated resources belong to different serving cells, use formula (4) to calculate each UE to be allocated resources in cell 2 in the serving cell, if it is also in the time-frequency block Using the CBF method above, the interference tolerance Ij,2,i of the serving cell (cell 1) to which the UE that has allocated resources (assuming the serving cell is cell 1) belongs to the cell 2,
Δj,2,i=SINRj,1,i-f-1(Rimin) (4)Δj,2,i = SINRj,1,i -f-1 (Rimin ) (4)
其中f-1表示通过信道容量反求SINRWhere f-1 means reverse SINR through channel capacity
根据Δj,2,i可以求出UE(i)在CoMP(x)方式下对eNB2的干扰容限Ij,2,i。According to Δj,2,i, the interference tolerance Ij,2,i of UE(i) to eNB2 in CoMP(x) mode can be obtained.
如果计算出已分配了CBF方式的UE所属的小区1对小区2的UE的干扰容限满足系统的要求(可由系统预设),并且满足小区2的UE自身的最小数据速率要求(已由系统预设),则还可以将已分配的该可选时频块上CBF方式在小区2的UE中进行分配,否则,不可以将已分配的该可选时频块上CBF方式在小区2的UE中进行分配。If it is calculated that the interference tolerance of the
如果被分配的CoMP方式为其他方式:If the assigned CoMP method is other methods:
则将已分配的可选时频块以及该时频块上可选CoMP方式从未分配资源的UE的该可选时频块及该可用时频块上可选CoMP方式中删除。Then delete the allocated optional time-frequency block and the optional CoMP mode on the time-frequency block from the optional time-frequency block and the optional CoMP mode on the available time-frequency block of the UE that has not allocated resources.
实施例3Example 3
上述为待分配资源的UE分配可用时频块以及该可用时频块上可选CoMP方式的步骤可通过着色法来完成。The above-mentioned steps of allocating an available time-frequency block and an optional CoMP mode on the available time-frequency block to the UE to be allocated resources can be completed by a coloring method.
参见图7,将待分配资源的UE的可用时频块上可选CoMP方式定义为CoMPi,x:其中i对应重叠区域中的UE,将x模3,所得到的商数为UE(i)的可用时频块号码,而将x模3,所得到的余数对应可选CoMP方式,余数为1对应CBF方式,余数为2对应Coherent JP方式,余数为3对应Non-Coherent JP方式,令x对应Col(x),即,每一个X对应一种颜色,也就是将CoMPI,x对应为ColI,x。Referring to Fig. 7, the optional CoMP mode on the available time-frequency block of the UE to be allocated resources is defined as CoMPi, x : where i corresponds to the UE in the overlapping area, modulo 3 of x, the obtained quotient is UE(i ), and x modulo 3, the obtained remainder corresponds to the optional CoMP mode, the remainder is 1 corresponding to the CBF mode, the remainder is 2 corresponding to the Coherent JP mode, and the remainder is 3 corresponding to the Non-Coherent JP mode, so that x corresponds to Col(x), that is, each X corresponds to a color, that is, CoMPI,x corresponds to ColI,x .
在本示例中,假设重叠区域有5个可用时频块(时频块0,1,2,3,4),每个时频块都有3种可选CoMP方式,那么共有5*3=15种资源需要分配给重叠区域中的所有UE,例如,可分配的资源为时频块0上可选CoMP方式为CBF时,可表示为CoMPi,1(由于x除3的商为时频块的号码,x模3的余数为可选的CoMP,余数为1为CBF方式,余数为2对应Coherent JP方式,余数为0对应Non-CoherentJP方式,所以当可分配的资源为可用时频块0上的CBF方式时,可计算出x=0*3+1=1)。In this example, assuming that there are 5 available time-frequency blocks (time-
在本示例中,假设重叠区域有4个UE(UEs、UEt、UEm、UEn)。下面描述建立该4个UE的着色模型的过程:In this example, it is assumed that there are 4 UEs (UEs, UEt, UEm, UEn) in the overlapping area. The process of establishing the shading model of the four UEs is described below:
首先,将这4个UE(UEs、UEt、UEm、UEn)分别对应成着色图模型中的4个顶点(Vs、Vt、Vm、Vn),接着为各个顶点建立信息列表。First, the four UEs (UEs, UEt, UEm, UEn) are respectively corresponding to the four vertices (Vs, Vt, Vm, Vn) in the coloring graph model, and then an information list is established for each vertex.
各个顶点的信息列表中顶点中都分别包括顶点本身,并将各顶点所对应的UE的服务小区记载在各顶点的信息列表中;In the information list of each vertex, the vertex itself is included in each vertex, and the serving cell of the UE corresponding to each vertex is recorded in the information list of each vertex;
将这4个UE的可用时频块以及该时频块上的可选CoMP方式CoMPi,x对应成顶点的可着颜色Coli,x(其中i对应Vs、Vt、Vm、Vn中的s、t、m、n(标示出了每个UE))。例如,通过计算UEs可分配的资源为CoMPs,1,CoMPs,5和CoMPs,9,对应为顶点Vs的信息列表中的可着颜色为:Cols,1,Cols,5和Cols,9,顶点Vt的信息列表中的可着颜色为:Colt,1,Colt,5和Colt,9,顶点Vm的信息列表中的可着颜色为:Colm,1和Colm,5,顶点Vn的信息列表中的可着颜色为:Coln,1和Coln,9。The available time-frequency blocks of these 4 UEs and the optional CoMP mode CoMPi, x on the time-frequency block are corresponding to the colorable color Coli, x of the vertex (where i corresponds to s in Vs, Vt, Vm, Vn , t, m, n (each UE is indicated)). For example, by calculating the resources that can be allocated to UEs as CoMPs, 1 , CoMPs, 5 and CoMPs, 9 , the colorable colors in the information list corresponding to the vertex Vs are: Cols, 1 , Cols, 5 and Cols, 9 , the available colors in the information list of vertex Vt are: Colt, 1 , Colt, 5 and Colt, 9 , and the available colors in the information list of vertex Vm are: Colm, 1 and Colm , 5 , the available colors in the information list of vertex Vn are: Coln, 1 and Coln, 9 .
本示例中每个顶点的信息列表的原始着色收益ai,x,即为该UE在该可用时频块上该可选CoMP方式所能达到的数据速率。In this example, the original coloring income ai,x of the information list of each vertex is the data rate that the UE can achieve in the optional CoMP mode on the available time-frequency block.
下面描述利用着色法计算每一种可着颜色的度di,x(对应该顶点所对应的UE在该可用时频块上该可选CoMP方式的度)。The calculation of the degree di,x of each colorable color (corresponding to the degree of the selectable CoMP mode of the UE corresponding to the vertex on the available time-frequency block) using the coloring method is described below.
首先描述为该模型中的各顶点加边的过程:First describe the process of adding edges to each vertex in the model:
以顶点Vs为例,通过该顶点的信息列表可知,该顶点共有3种可着颜色Cols,1,Cols,5和Cols,9,对其中的每一种可着颜色,判断该模型中是否有其它顶点的信息列表中也有相同的颜色,则可根据该颜色所对应的可选CoMP方式来为这些顶点加边。如果顶点Vi可着颜色Coli,x对应Coherent JP或Non-Coherent JP方式(将x模3的余数为2或0),则如果存在定点Vi'的(i’包括i)可着颜色对应同一时频块的Coherent JP或Non-Coherent JP方式,即Coli’,(x/3)*3)或Coli’,(x/3*3+2),其中(x/3)表示对x除3后的商,则用这种颜色的实线连接它们。若可着颜色对应CBF方式(将x模3的余数为1),则判断和Vs具有相同可着颜色的顶点是否和Vs同属于一个服务小区,如果是,则用这种颜色的实线连接它们,否则,用这种可着颜色的虚线连接它们。Taking the vertex Vs as an example, it can be seen from the information list of the vertex that there are 3 possible colors Cols, 1 , Cols, 5 and Cols, 9 for this vertex. For each of the possible colors, judge the model Whether there are other vertices with the same color in the information list of other vertices, you can add edges to these vertices according to the optional CoMP method corresponding to the color. If the vertex Vi can be colored Coli, x corresponds to Coherent JP or Non-Coherent JP (the remainder of x modulo 3 is 2 or 0), then if there is a fixed point Vi' (i' including i) that can be colored corresponding to Coherent JP or Non-Coherent JP mode of the same time-frequency block, that is, Coli', (x/3)*3 ) or Coli', (x/3*3+2 ), where (x/3) represents the pair If the quotient of x is divided by 3, connect them with a solid line of this color. If the colorable color corresponds to the CBF method (the remainder of x modulo 3 is 1), then judge whether the vertex with the same colorable color as Vs belongs to the same serving cell as Vs, if so, connect it with a solid line of this color They, otherwise, connect them with this colorable dotted line.
在本模型中,对于可着颜色Cols,1,由于可着颜色Cols,1中的1模3余1(对应CBF方式),顶点Vs、Vt、Vm和Vn的信息列表都有这种可着颜色,加边过程具体如下:In this model, for the colorable color Cols, 1, since the 1 modulo 3
Vs和Vt的信息表中的服务小区相同(小区1),则用可着颜色Cols,1的实线连接顶点Vs和Vt。The serving cell in the information table of Vs and Vt is the same (community 1), then the vertices Vs and Vt are connected by a solid line that can be colored Cols, 1 .
Vs和Vm的信息表中的服务小区不同,则用可着颜色Cols,1的虚线连接顶点Vs和Vm。The serving cells in the information tables of Vs and Vm are different, and a dotted line that can be colored Cols, 1 is used to connect the vertices Vs and Vm.
Vs和Vn的信息表中的服务小区不同,则用可着颜色Cols,1的虚线连接顶点Vs和Vn。The serving cells in the information tables of Vs and Vn are different, so a dotted line that can be colored Cols, 1 is used to connect the vertices Vs and Vn.
Vt和Vm的信息表中的服务小区不同,则用可着颜色Cols,1的虚线连接顶点Vt和Vm。The serving cells in the information tables of Vt and Vm are different, and the vertices Vt and Vm are connected by a dotted line that can be colored Cols, 1 .
Vt和Vn的信息表中的服务小区不同,则用可着颜色Cols,1的虚线连接顶点Vt和Vn。The serving cells in the information tables of Vt and Vn are different, so a dotted line with the color Cols, 1 is used to connect the vertices Vt and Vn.
Vm和Vn的信息表中的服务小区相同(小区2),则用可着颜色Cols,1的实线连接顶点The serving cells in the information tables of Vm and Vn are the same (community 2), then connect the vertices with a solid line that can be colored Cols, 1
对于可着颜色Cols,5,由于可着颜色Cols,5中的5模3余2(对应第2个时频块的Coherent JP方式),顶点Vs、Vt和Vm的信息列表都有这种可着颜色,加边过程如下:分别用可着颜色Cols,5的实线连接顶点Vs和Vt、Vs和Vm以及Vt和Vm。For the colorable color Cols, 5 , since the 5 in the
对于可着颜色Cols,9,由于可着颜色Cols,9中的9模3余0(对应第3个时频块Non-Coherent JP方式),顶点Vs、Vt和Vn的信息列表都有这种可着颜色,加边过程如下:分别用可着颜色Cols,9的实线连接顶点Vs和Vt、Vs和Vn以及Vt和Vn。For the colorable color Cols, 9, since the
而模型中各个顶点的信息列表中的每种可着颜色的度为与该顶点相连接的该可着颜色的实边数目。由此,该模型中的各个顶点的信息列表中的每种可着颜色的度为:The degree of each colorable color in the information list of each vertex in the model is the number of real edges connected to the vertex that can be colored. Thus, the degree of each colorable color in the information list of each vertex in the model is:
Vs的信息列表中的可着颜色Cols,1的度为1,可着颜色Cols,5的度为2,可着颜色Cols,9的度为2;The colorable color Cols in the information list of Vs, the degree of 1 is 1, the colorable color Cols, the degree of 5 is 2, the colorable color Cols, the degree of 9 is 2;
Vt的信息列表中的可着颜色Cols,1的度为1,可着颜色Cols,5的度为2,可着颜色Cols,9的度为2;The colorable color Cols in the information list of Vt, the degree of 1 is 1, the colorable color Cols, the degree of 5 is 2, the colorable color Cols, the degree of 9 is 2;
Vm的信息列表中的可着颜色Cols,1的度为1,可着颜色Cols,5的度为2;The colorable color Cols in the information list of Vm, the degree of 1 is 1, the colorable color Cols, the degree of 5 is 2;
Vn的信息列表中的可着颜色Cols,1的度为1,可着颜色Cols,9的度为2。The colorable color Cols in the information list of Vn, the degree of 1 is 1, the colorable color Cols, the degree of 9 is 2.
下面描述为该着色模型中的各顶点着色的过程:The process of shading each vertex in this shading model is described below:
最初4个顶点Vs、Vt、Vm和Vn都没有被着色,此时,通过各个顶点的信息列表可以计算出每个顶点的每种可着颜色的着色收益与该可着颜色的度的比值,假设在此种情况下,最大的比值为Vs的可着颜色为Cols,1的着色收益与该可着颜色的度的比值,此时将可着颜色为Cols,1分配给Vs,即,对顶点Vs进行了着色。(由于Cols,1中的1模3商数为0,1模3余1,即,将时频块0上的CBF方式分配给Vs所对应的UEs)。将已着色的顶点Vs从没有被着色的顶点中删除,由于顶点Vs被删除,与顶点Vs相连接的虚边和实边也将被删除。The initial four vertices Vs, Vt, Vm and Vn are not colored. At this time, the ratio of the coloring income of each colorable color of each vertex to the degree of the colorable color can be calculated through the information list of each vertex. Assuming that in this case, the colorable color with the largest ratio of Vs is Cols, the ratio of the coloring income of 1 to the degree of the colorable color, at this time, the colorable color is Cols, and 1 is assigned to Vs, that is , the vertex Vs is shaded. (Because of Cols, the quotient of 1 modulo 3 in 1 is 0, and the remainder of 1 modulo 3 is 1, that is, the CBF mode on time-frequency block 0 is allocated to UEs corresponding to Vs). Delete the shaded vertex Vs from the unshaded vertices, since the vertex Vs is deleted, the virtual and real edges connected to the vertex Vs will also be deleted.
由于删除了顶点Vs以及与顶点Vs相连接的虚边和实边也将被删除更新余下3个顶点的信息列表:Since the vertex Vs is deleted and the imaginary and real edges connected to the vertex Vs will also be deleted, update the information list of the remaining 3 vertices:
由于已将可着颜色Cols,1分配给顶点Vs,在顶点Vt、Vm和Vn的信息列表中是否删除可着颜色Cols,1需要作以下判断:Since the colorable color Cols, 1 has been assigned to the vertex Vs, whether to delete the colorable color Cols, 1 in the information list of the vertices Vt, Vm, and Vn needs to be judged as follows:
将可着颜色Cols,1从与Vs具有相同服务小区的顶点的信息列表中删除;在此种情况下,将顶点Vt的信息列表中的可着颜色Cols,1删除,而不删除Vm和Vn的信息列表中可着颜色Cols,1;Delete the colorable color Cols, 1 from the information list of the vertex with the same serving cell as Vs; in this case, delete the colorable color Cols, 1 in the information list of the vertex Vt, without deleting Vm Color Cols, 1 can be colored in the information list of Vn;
重新更新余下3个顶点的信息列表,即,要计算余下3个顶点的每种可着颜色的度;与为Vs的着色方法类似,为其它的顶点着色,直到所有顶点都被着色或是余下的顶点的信息列表中已没有可着颜色。Re-update the information list of the remaining 3 vertices, that is, to calculate the degree of each colorable color of the remaining 3 vertices; similar to the coloring method for Vs, color the other vertices until all vertices are colored or the remaining There are no colorable colors in the information list of the vertex.
若所有顶点都能着色,则表示所有有可选CoMP方式的用户都能进行CoMP,既能满足自己的需求,又能使系统优化目标最大。若有剩余顶点没有着色,则对应的用户当前不能进行CoMP,需要等待一定时间。If all vertices can be colored, it means that all users who have an optional CoMP method can perform CoMP, which can not only meet their own needs, but also maximize the system optimization goal. If there are remaining vertices that are not colored, the corresponding user cannot perform CoMP at present and needs to wait for a certain period of time.
本方案解决了为用户分配时频资源和CoMP方式的问题。既能最大限度地满足每个用户自己的数据速率需求,又能使系统优化目标最大。当可用时频块数量明显少于UE数时,相比随机选择算法,本实施例所提供的方法明显提升性能。This solution solves the problem of allocating time-frequency resources and CoMP mode for users. It can not only meet the data rate requirement of each user to the greatest extent, but also maximize the system optimization goal. When the number of available time-frequency blocks is obviously less than the number of UEs, compared with the random selection algorithm, the method provided by this embodiment improves the performance significantly.
实施例4Example 4
本实施例提供一种基站。参加图3,该基站包括:接收模块300、可选CoMP方式确定模块310、度确定模块320以及分配模块330;This embodiment provides a base station. Referring to FIG. 3, the base station includes: a receiving
其中接收模块300用于接收多个小区的重叠区域内用户设备UE的测量信息;Wherein the receiving
可选CoMP方式确定模块210用于根据所述UE的测量信息,确定所述UE在各可选时频块上的各可选CoMP方式;The optional CoMP mode determination module 210 is configured to determine each optional CoMP mode of the UE on each optional time-frequency block according to the measurement information of the UE;
度确定模块220用于确定所述UE在所述各可选时频块上采用所述各可选CoMP方式时的数据速率和度;The degree determination module 220 is configured to determine the data rate and degree when the UE adopts each optional CoMP mode on each optional time-frequency block;
分配模块230用于根据所述UE在所述各可选时频块上采用所述各可选CoMP方式、在所述各可选时频块上采用所述各可选CoMP方式时的数据速率和度,为所述UE进行资源分配。The allocating module 230 is configured to use the optional CoMP methods on the optional time-frequency blocks according to the data rate when the UE adopts the optional CoMP methods on the optional time-frequency blocks and degree, perform resource allocation for the UE.
参见图4,所述可选CoMP方式确定模块310,具体包括:计算单元311和确定单元312;其中Referring to FIG. 4, the optional CoMP
计算单元311,用于根据所述UE的测量信息中包含的每个小区在该UE的各可用时频块上的下行信道响应信息、每个小区在该UE的各可用时频块上发送的信号、以及在所述各可选CoMP方式下每个小区所发送信号对各个UE作用,计算所述UE在所述各可用时频块上采用所述各可用CoMP方式时的数据速率;The
确定单元312,用于若所述UE在一可用时频块上采用一可用CoMP方式时的数据速率在该UE的数据速率需求范围内,则确定所述可用时频块上采用所述CoMP方式为所述UE的可选时频块上采用可选的CoMP方式。A determining
参见图5,其中所述度确定模块320,具体包括:波束成形CBF度计算单元321、相关联合处理Coherent JP度计算单元322以及非相关联合处理Non-Coherent JP度计算单元323;Referring to FIG. 5 , the
其中波束成形CBF度计算单元321,用于计算如果所述可选时频块上采用所述可选CoMP方式为协同波束成形CBF,则所述UE在可选时频块上采用可选CoMP方式为CBF的度为与所述UE属于同一个小区并且在相同可选时频块上采用的可选CoMP方式为CBF的其它UE的数量;The beamforming CBF
相关联合处理Coherent JP度计算单元322,用于计算如果所述可选时频块上采用所述可选CoMP方式为相关联合处理Coherent JP,则所述UE在可选时频块上采用可选CoMP方式为Coherent JP的度为与所述UE存在相同可选时频块上采用的可选CoMP方式为Coherent JP的其它UE的数量;The related joint processing Coherent JP
非相关联合处理Non-Coherent JP度计算单元323,用于计算如果所述可选时频块上采用所述可选CoMP方式为非相关联合处理Non-Coherent JP,则所述UE在可选时频块上采用可选CoMP方式为Non-Coherent JP的度为与所述UE存在相同可选时频块上采用的可选CoMP方式为Non-Coherent JP的其它UE的数量。The non-correlated joint processing Non-Coherent JP
参见图6,其中所述分配模块330具体包括:分配单元331;其中Referring to Fig. 6, wherein the
分配单元331,用于分别计算多个未分配资源的UE在各可选时频块上采用各可选CoMP方式时的数据速率与度的比值,将最大比值所对应的可选时频块以及所述时频块上的可选CoMP方式分配给拥有该最大比值的UE。The allocating
本实施例提供的装置,与方法实施例属于同一构思,其具体实现过程详见方法实施例,这里不再赘述。The device provided in this embodiment belongs to the same idea as the method embodiment, and its specific implementation process is detailed in the method embodiment, and will not be repeated here.
本方案解决了为用户分配时频资源和CoMP方式的问题。既能最大限度地满足每个用户自己的数据速率需求,又能使系统优化目标最大。当可用时频块数量明显少于UE数时,相比随机选择算法性能提升较明显。This solution solves the problem of allocating time-frequency resources and CoMP mode for users. It can not only meet the data rate requirement of each user to the greatest extent, but also maximize the system optimization goal. When the number of available time-frequency blocks is significantly less than the number of UEs, the performance improvement compared to the random selection algorithm is more obvious.
以上实施例提供的技术方案中的全部或部分内容可以通过软件编程实现,其软件程序存储在可读取的存储介质中,存储介质例如:计算机中的硬盘、光盘或软盘。All or part of the technical solutions provided by the above embodiments can be realized by software programming, and the software program is stored in a readable storage medium, such as a hard disk, an optical disk or a floppy disk in a computer.
以上所述仅为本发明的较佳实施例,并不用以限制本发明,凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the present invention. within range.
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| CN2010102923380ACN101945482B (en) | 2010-09-21 | 2010-09-21 | Resource allocation method for coordinated multiple point (CoMP) mode and base station |
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| CN2010102923380ACN101945482B (en) | 2010-09-21 | 2010-09-21 | Resource allocation method for coordinated multiple point (CoMP) mode and base station |
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| CN2010102923380AActiveCN101945482B (en) | 2010-09-21 | 2010-09-21 | Resource allocation method for coordinated multiple point (CoMP) mode and base station |
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