CN104080174B - Cell reference signals interference processing method, system and the device of minizone - Google Patents
Cell reference signals interference processing method, system and the device of minizone Download PDFInfo
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Abstract
本发明公开了小区间的CRS干扰处理方法、系统和装置:对于网络中任意两个发生CRS位置冲突的相邻小区,将其中一个小区使用的特殊子帧中的DwPTS时隙配置为长DwPTS时隙,将另一个小区使用的特殊子帧中的DwPTS时隙配置为短DwPTS时隙;确定出与相邻小区发生CRS位置冲突、且配置了长DwPTS时隙的小区下属的终端中符合要求的终端,所述符合要求包括:位于所属小区边缘、且临近与所属小区发生CRS位置冲突的相邻小区;将确定出的终端调度至所属小区使用的特殊子帧中的DwPTS时隙进行数据传输。应用本发明所述方案,能够提高系统的下行性能。
The invention discloses a CRS interference processing method, system and device between cells: for any two adjacent cells in the network where CRS positions conflict, when the DwPTS time slot in the special subframe used by one of the cells is configured as a long DwPTS Configure the DwPTS time slot in the special subframe used by another cell as a short DwPTS time slot; determine the CRS position conflict with the adjacent cell and configure the long DwPTS time slot among the terminals of the cell that meets the requirements For the terminal, the compliance includes: being located at the edge of the cell to which it belongs and adjacent to a neighboring cell where the CRS position conflicts with the cell to which it belongs; scheduling the determined terminal to the DwPTS time slot in the special subframe used by the cell to which it belongs for data transmission. Applying the scheme of the present invention can improve the downlink performance of the system.
Description
技术领域technical field
本发明涉及无线技术,特别涉及小区间的小区参考信号干扰处理方法、系统和装置。The present invention relates to wireless technology, in particular to a method, system and device for processing cell reference signal interference between cells.
背景技术Background technique
在时分长期演进(TD-LTE,Time Division Long Term Evolution)系统中,小区参考信号(CRS,Cell-specific Reference Signal)是终端进行信道估计和数据解调等的重要参考信号。In a Time Division Long Term Evolution (TD-LTE, Time Division Long Term Evolution) system, a Cell-specific Reference Signal (CRS, Cell-specific Reference Signal) is an important reference signal for a terminal to perform channel estimation and data demodulation.
对于目前普遍采用的两天线端口系统,在正常循环前缀(CP,Cyclic Prefix)的配置下,CRS在时域上位于每个1ms子帧的第1、第5、第8和第12个正交频分复用(OFDM,Orthogonal Frequency Division Multiplexing)符号上(OFDM符号的编号从1开始),在频域上每3个子载波出现一次,即每12个子载波中会有4个CRS位置。For the currently commonly used two-antenna port system, under the normal cyclic prefix (CP, Cyclic Prefix) configuration, the CRS is located in the 1st, 5th, 8th, and 12th orthogonals of each 1ms subframe in the time domain On frequency division multiplexing (OFDM, Orthogonal Frequency Division Multiplexing) symbols (the number of OFDM symbols starts from 1), in the frequency domain, every 3 subcarriers appear once, that is, there are 4 CRS positions in every 12 subcarriers.
对于终端来说,如果CRS受到相邻小区CRS的干扰,会严重影响终端的信号估计和数据接收性能,从而使系统的下行性能下降,为此,现有技术中通常采用小区间CRS频域移位的解决方式。For the terminal, if the CRS is interfered by the CRS of the adjacent cell, it will seriously affect the signal estimation and data reception performance of the terminal, thereby degrading the downlink performance of the system. Therefore, in the prior art, the CRS frequency domain shift between cells is usually used bit solution.
但是,由于TD-LTE系统中CRS在频域密度较高,因此最多只能有3个小区的CRS位置可以相互错开,而在无线网络中,特别是密集城区等,很容易出现4个甚至更多个小区相邻的现象,此时,必然有两个小区的CRS位置无法错开,即发生CRS位置冲突。如图1所示,图1为现有小区间发生CRS位置冲突的示意图,小区2、小区3和小区4的CRS位置可以相互错开,但是,小区1和小区2的CRS位置则无法错开,从而发生CRS位置冲突,进而导致小区间的CRS干扰。However, due to the high density of CRS in the frequency domain in the TD-LTE system, there are only three CRS positions that can be staggered from each other at most, while in wireless networks, especially in dense urban areas, it is easy to have four or even more The phenomenon that multiple cells are adjacent, at this time, the CRS positions of two cells must not be staggered, that is, CRS position conflicts occur. As shown in Figure 1, Figure 1 is a schematic diagram of CRS position conflicts among existing cells. The CRS positions of Cell 2, Cell 3, and Cell 4 can be staggered from each other, but the CRS positions of Cell 1 and Cell 2 cannot be staggered, so that A CRS location conflict occurs, which in turn leads to CRS interference between cells.
可见,现有方式仍存在缺陷,从而会导致系统的下行性能下降。It can be seen that there are still defects in the existing method, which will lead to a decrease in the downlink performance of the system.
发明内容Contents of the invention
有鉴于此,本发明提供了小区间的小区参考信号干扰处理方法、系统和装置,能够提高系统的下行性能。In view of this, the present invention provides a method, system and device for processing cell reference signal interference between cells, which can improve the downlink performance of the system.
为达到上述目的,本发明的技术方案是这样实现的:In order to achieve the above object, technical solution of the present invention is achieved in that way:
一种小区间的CRS干扰处理方法,包括:A method for processing CRS interference between cells, comprising:
针对网络中任意两个发生CRS位置冲突的相邻小区,将其中一个小区使用的特殊子帧中的下行导频时隙DwPTS配置为长DwPTS时隙,将另一个小区使用的特殊子帧中的DwPTS时隙配置为短DwPTS时隙;For any two adjacent cells in the network where CRS positions conflict, configure the downlink pilot time slot DwPTS in the special subframe used by one cell as a long DwPTS time slot, and configure the DwPTS time slot in the special subframe used by the other cell as a long DwPTS time slot. The DwPTS slot is configured as a short DwPTS slot;
确定出与相邻小区发生CRS位置冲突、且配置了长DwPTS时隙的小区下属的终端中符合要求的终端,所述符合要求包括:位于所属小区边缘、且临近与所属小区发生CRS位置冲突的相邻小区;将确定出的终端调度至所属小区使用的特殊子帧中的DwPTS时隙进行数据传输。Determine the terminals that meet the requirements among the terminals of the cell subordinate to the cell that has a CRS position conflict with the adjacent cell and is configured with a long DwPTS time slot. Neighboring cell: scheduling the determined terminal to the DwPTS time slot in the special subframe used by the cell to perform data transmission.
一种小区间的CRS干扰处理系统,包括:A CRS interference processing system between cells, comprising:
时隙配置装置,用于针对网络中任意两个发生CRS位置冲突的相邻小区,将其中一个小区使用的特殊子帧中的下行导频时隙DwPTS配置为长DwPTS时隙,将另一个小区使用的特殊子帧中的DwPTS时隙配置为短DwPTS时隙;The time slot configuration device is used to configure the downlink pilot time slot DwPTS in the special subframe used by one of the cells as a long DwPTS time slot for any two adjacent cells in the network where the CRS position conflict occurs, and configure the DwPTS time slot of the other cell The DwPTS slot in the special subframe used is configured as a short DwPTS slot;
资源分配装置,用于确定出与相邻小区发生CRS位置冲突、且配置了长DwPTS时隙的小区下属的终端中符合要求的终端,所述符合要求包括:位于所属小区边缘、且临近与所属小区发生CRS位置冲突的相邻小区;将确定出的终端调度至所属小区使用的特殊子帧中的DwPTS时隙进行数据传输。The resource allocation device is used to determine a terminal that meets the requirements among the terminals of the cell subordinate to the cell that has a CRS position conflict with the adjacent cell and is configured with a long DwPTS time slot. Adjacent cells where the CRS positions of the cells collide; the determined terminal is scheduled to the DwPTS time slot in the special subframe used by the cell for data transmission.
一种时隙配置装置,包括:A time slot configuration device, comprising:
时隙配置模块,用于针对网络中任意两个发生小区参考信号CRS位置冲突的相邻小区,将其中一个小区使用的特殊子帧中的下行导频时隙DwPTS配置为长DwPTS时隙,将另一个小区使用的特殊子帧中的DwPTS时隙配置为短DwPTS时隙。The time slot configuration module is used to configure the downlink pilot time slot DwPTS in the special subframe used by one of the cells as a long DwPTS time slot for any two adjacent cells where the cell reference signal CRS position conflict occurs in the network. The DwPTS slot in the special subframe used by another cell is configured as a short DwPTS slot.
一种资源分配装置,包括:A resource allocation device, comprising:
确定模块,用于确定出与相邻小区发生小区参考信号CRS位置冲突、且配置了长下行导频时隙DwPTS的小区下属的终端中符合要求的终端,所述符合要求包括:位于所属小区边缘、且临近与所属小区发生CRS位置冲突的相邻小区;将确定出的终端通知给调度模块;A determination module, configured to determine a terminal that meets the requirements among the terminals of the cell subordinate to the cell that has a cell reference signal CRS position conflict with an adjacent cell and is configured with a long downlink pilot time slot DwPTS, and the compliance includes: being located at the edge of the cell to which it belongs , and is adjacent to a neighboring cell whose CRS position conflicts with the cell to which it belongs; notifying the scheduling module of the determined terminal;
所述调度模块,用于将确定出的终端调度至所属小区使用的特殊子帧中的DwPTS时隙进行数据传输。The scheduling module is configured to schedule the determined terminal to the DwPTS time slot in the special subframe used by the cell to which it belongs for data transmission.
可见,采用本发明所述方案,分别为两个发生CRS位置冲突的相邻小区配置长DwPTS时隙和短DwPTS时隙,并将配置了长DwPTS时隙的小区下属的终端中位于小区边缘且临近发生CRS位置冲突的相邻小区的终端调度至长DwPTS时隙进行数据传输,即将受到相邻小区CRS干扰严重的终端调度至长DwPTS时隙进行数据传输,从而减少甚至避免了CRS干扰,进而提高了系统的下行性能。It can be seen that, by adopting the scheme of the present invention, a long DwPTS time slot and a short DwPTS time slot are respectively configured for two adjacent cells where CRS position conflicts occur, and the terminals of the cell with the long DwPTS time slot configured are located at the edge of the cell and Terminals in adjacent cells that are close to CRS position conflicts are scheduled to long DwPTS time slots for data transmission, and terminals that are severely interfered by adjacent cell CRS are scheduled to long DwPTS time slots for data transmission, thereby reducing or even avoiding CRS interference, and then The downlink performance of the system is improved.
附图说明Description of drawings
图1为现有小区间发生CRS位置冲突的示意图。FIG. 1 is a schematic diagram of a CRS location conflict occurring between existing cells.
图2为本发明小区间的CRS干扰处理方法实施例的流程图。Fig. 2 is a flowchart of an embodiment of a method for processing CRS interference between cells according to the present invention.
图3为按照本发明所述方式对两个小区使用的特殊子帧进行配置后的示意图。Fig. 3 is a schematic diagram of configuring special subframes used by two cells according to the method of the present invention.
图4为按照本发明所述方式需要调度至长DwPTS时隙进行数据传输的终端示意图。Fig. 4 is a schematic diagram of a terminal that needs to be scheduled to a long DwPTS time slot for data transmission according to the method of the present invention.
具体实施方式detailed description
针对现有技术中存在的问题,本发明中提出一种小区间的CRS干扰处理方案,能够提高系统的下行性能。Aiming at the problems existing in the prior art, the present invention proposes an inter-cell CRS interference processing scheme, which can improve the downlink performance of the system.
为了使本发明的技术方案更加清楚、明白,以下参照附图并举实施例,对本发明所述方案作进一步地详细说明。In order to make the technical solution of the present invention more clear and understandable, the solution of the present invention will be further described in detail below with reference to the accompanying drawings and examples.
图2为本发明小区间的CRS干扰处理方法实施例的流程图。如图2所示,包括以下步骤:Fig. 2 is a flowchart of an embodiment of a method for processing CRS interference between cells according to the present invention. As shown in Figure 2, it includes the following steps:
步骤21:针对网络中任意两个发生CRS位置冲突的相邻小区,将其中一个小区使用的特殊子帧中的下行导频时隙(DwPTS,Downlink Pilot Time Slot)配置为长DwPTS时隙,将另一个小区使用的特殊子帧中的DwPTS时隙配置为短DwPTS时隙。Step 21: For any two adjacent cells in the network where CRS positions conflict, configure the downlink pilot time slot (DwPTS, Downlink Pilot Time Slot) in the special subframe used by one of the cells as a long DwPTS time slot, and set The DwPTS slot in the special subframe used by another cell is configured as a short DwPTS slot.
在TD-LTE系统中,每个10ms长的无线帧中,有1~2个1ms长的特殊子帧,特殊子帧由DwPTS时隙、保护间隔(GP,Guard Period)时隙和上行导频时隙(UpPTS,Uplink PilotTime Slot)组成。In the TD-LTE system, in each 10ms long wireless frame, there are 1~2 special subframes with a length of 1ms. The special subframe consists of a DwPTS time slot, a guard interval (GP, Guard Period) time slot and an uplink pilot Time slot (UpPTS, Uplink PilotTime Slot) composition.
其中,DwPTS时隙用于下行控制信号和数据信号的传输,GP时隙为上下行传输的保护时隙,没有信号传输,UpPTS时隙用于上行探测参考信号(SRS,Sounding ReferenceSignal)和随机接入信号的传输。Among them, the DwPTS time slot is used for the transmission of downlink control signals and data signals, the GP time slot is the guard time slot for uplink and downlink transmission, and there is no signal transmission, and the UpPTS time slot is used for uplink sounding reference signal (SRS, Sounding Reference Signal) and random access. transmission of incoming signals.
在正常CP配置下,TD-LTE标准规定了9种特殊子帧配置,每种分别对应一个各特殊时隙所占OFDM符号数的组合,如表一所示。Under the normal CP configuration, the TD-LTE standard specifies 9 special subframe configurations, each of which corresponds to a combination of the number of OFDM symbols occupied by each special time slot, as shown in Table 1.
表一正常CP配置下特殊子帧配置Table 1 Special subframe configuration under normal CP configuration
其中,当DwPTS时隙占用9、10、11或12个OFDM符号时,既可以用于传输控制信号,也可以用于传输数据信号,称为长DwPTS时隙;当DwPTS时隙占用3个OFDM符号时,只可以传输控制信号,不能传输数据信号,称为短DwPTS时隙。Among them, when a DwPTS time slot occupies 9, 10, 11 or 12 OFDM symbols, it can be used to transmit control signals or data signals, which is called a long DwPTS time slot; when a DwPTS time slot occupies 3 OFDM symbols When a symbol is used, only control signals can be transmitted, and data signals cannot be transmitted, which is called a short DwPTS time slot.
本步骤中,对于两个发生CRS位置冲突的相邻小区,将其中一个小区使用的特殊子帧中的DwPTS时隙配置为长DwPTS时隙,将另一个小区使用的特殊子帧中的DwPTS时隙配置为短DwPTS。In this step, for two adjacent cells where CRS positions conflict, the DwPTS time slot in the special subframe used by one of the cells is configured as a long DwPTS time slot, and the DwPTS time slot in the special subframe used by the other cell is configured as a long DwPTS time slot. The slot is configured as a short DwPTS.
而对于网络中未与相邻小区发生CRS位置冲突的小区,可将其使用的特殊子帧中的DwPTS时隙配置为长DwPTS时隙,以提高系统的下行性能。For a cell that does not have a CRS position conflict with an adjacent cell in the network, the DwPTS time slot in the special subframe used by it can be configured as a long DwPTS time slot to improve the downlink performance of the system.
另外,可将网络中各小区使用的特殊子帧中的UpPTS时隙占用的OFDM符号数均配置为相同,如均为1个,或均为2个。In addition, the number of OFDM symbols occupied by the UpPTS time slots in the special subframes used by each cell in the network can be configured to be the same, for example, all are one, or both are two.
在实际应用中,本步骤可通过人工辅助的方式实现,也可通过自动方式实现。In practical application, this step can be realized by manual assistance or by automatic method.
其中,人工辅助的方式,即指人工对网络中各小区的CRS位置进行分析,并根据分析结果完成不同小区的长短DwPTS时隙配置等。Among them, the manual assistance method refers to manually analyzing the CRS positions of each cell in the network, and completing the configuration of long and short DwPTS time slots for different cells according to the analysis results.
自动方式则无需人工参与,对于任一小区,可根据自动邻区关系发现功能,确定该小区是否与相邻小区发生CRS位置冲突,如果是,则获取与该小区发生CRS位置冲突的相邻小区的标识,并将获取到的标识与该小区的标识进行比较,如果该小区的标识较大,则将该小区使用的特殊子帧中的DwPTS时隙配置为长DwPTS时隙,否则,将该小区使用的特殊子帧中的DwPTS时隙配置为短DwPTS时隙。The automatic mode does not require manual participation. For any cell, it can be determined whether the cell has a CRS position conflict with an adjacent cell according to the automatic neighbor relationship discovery function. If so, obtain the adjacent cell that has a CRS position conflict with the cell. , and compare the acquired identity with the identity of the cell, if the identity of the cell is larger, configure the DwPTS time slot in the special subframe used by the cell as a long DwPTS time slot, otherwise, configure the The DwPTS slot in the special subframe used by the cell is configured as a short DwPTS slot.
步骤22:确定出与相邻小区发生CRS位置冲突、且配置了长DwPTS时隙的小区下属的终端中符合要求的终端,所述符合要求包括:位于所属小区边缘、且临近与所属小区发生CRS位置冲突的相邻小区;将确定出的终端调度至所属小区使用的特殊子帧中的DwPTS时隙进行数据传输。Step 22: Determine the qualified terminals among the terminals subordinate to the cell that has a CRS position conflict with the adjacent cell and is configured with a long DwPTS time slot. The compliance includes: being located at the edge of the cell to which it belongs, and close to the cell where CRS occurs Neighboring cells with conflicting positions; scheduling the determined terminal to the DwPTS time slot in the special subframe used by the cell to which it belongs for data transmission.
如果一小区与相邻小区发生CRS位置冲突、且配置了长DwPTS时隙,那么本步骤中,可首先确定出该小区下属的终端中符合要求的终端,即位于该小区边缘且临近与该小区发生CRS位置冲突的相邻小区的终端,之后,可将确定出的终端调度至该小区使用的特殊子帧中的DwPTS时隙进行数据传输。If a CRS location conflict occurs between a cell and an adjacent cell and a long DwPTS time slot is configured, then in this step, firstly determine the qualified terminal among the terminals subordinate to the cell, that is, the terminal located at the edge of the cell and close to the cell The terminal of the adjacent cell where the CRS position conflict occurs can then schedule the determined terminal to the DwPTS time slot in the special subframe used by the cell for data transmission.
确定一终端是否符合要求可采用以下方式:获取该终端测量并上报的与所属小区发生CRS位置冲突的相邻小区的参考信号接收功率(RSRP,Reference Signal ReceivingPower)值,确定获取到的RSRP值与该终端所属小区的RSRP值之差的绝对值是否位于区间{a,b}内,如果是,则确定该终端为符合要求的终端;其中,a和b均大于或等于0,且b大于a。a和b的具体取值均可根据实际需要而定,较佳地,a=0dB,b=3dB。To determine whether a terminal meets the requirements, the following methods can be used: obtain the Reference Signal Received Power (RSRP, Reference Signal Receiving Power) value of the adjacent cell that the terminal has measured and reported that conflicts with the CRS position of the cell it belongs to, and determine the obtained RSRP value and Whether the absolute value of the difference between the RSRP values of the cell to which the terminal belongs is within the interval {a, b}, if so, determine that the terminal is a qualified terminal; where a and b are both greater than or equal to 0, and b is greater than a . The specific values of a and b can be determined according to actual needs, preferably, a=0dB, b=3dB.
下面结合附图,对步骤21~22进行进一步说明。Steps 21-22 will be further described below in conjunction with the accompanying drawings.
图3为按照本发明所述方式对两个小区使用的特殊子帧进行配置后的示意图。如图3所示,为小区1配置短DwPTS时隙,占用3个OFDM符号,为小区2配置长DwPTS时隙,占用10个OFDM符号,为小区1和小区2配置的UpPTS时隙均占用2个OFDM符号;可以看出,小区1在下行的第4~12个符号上无任何信号传输,包括CRS,小区2在下行的第4~10个OFDM符号上可以进行数据信号和CRS的传输,当小区1和小区2发生如图1所示的CRS位置冲突时,在图3所标示的时隙内,小区2不会受到小区1的CRS干扰。Fig. 3 is a schematic diagram of configuring special subframes used by two cells according to the method of the present invention. As shown in Figure 3, a short DwPTS time slot is configured for cell 1, occupying 3 OFDM symbols, a long DwPTS time slot is configured for cell 2, occupying 10 OFDM symbols, and UpPTS time slots configured for cell 1 and cell 2 occupy 2 OFDM symbols; it can be seen that cell 1 has no signal transmission on the 4th to 12th downlink symbols, including CRS, and cell 2 can transmit data signals and CRS on the 4th to 10th downlink OFDM symbols. When cell 1 and cell 2 have a CRS location conflict as shown in FIG. 1 , cell 2 will not be interfered by the CRS of cell 1 in the time slot indicated in FIG. 3 .
图4为按照本发明所述方式需要调度至长DwPTS时隙进行数据传输的终端示意图。如图4所示,假设小区2、小区3和小区4的CRS位置错开,即不会发生CRS位置冲突,彼此间无CRS干扰,而小区1和小区2的CRS位置无法错开,终端1位于小区2的边缘,且临近小区1,为避免小区1的CRS干扰,需要将终端1调度至小区2使用的特殊子帧中的长DwPTS时隙进行数据传输。Fig. 4 is a schematic diagram of a terminal that needs to be scheduled to a long DwPTS time slot for data transmission according to the method of the present invention. As shown in Figure 4, assuming that the CRS positions of cell 2, cell 3, and cell 4 are staggered, that is, there will be no CRS position conflict and no CRS interference between them, and the CRS positions of cell 1 and cell 2 cannot be staggered, and terminal 1 is located in the cell 2 and adjacent to cell 1, in order to avoid CRS interference in cell 1, terminal 1 needs to be scheduled to the long DwPTS time slot in the special subframe used by cell 2 for data transmission.
至此,即完成了关于本发明方法实施例的介绍。So far, the introduction about the method embodiment of the present invention is completed.
基于上述介绍,本发明同时公开了一种小区间的CRS干扰处理系统、一种时隙配置装置以及一种资源分配装置。Based on the above introduction, the present invention simultaneously discloses an inter-cell CRS interference processing system, a time slot configuration device and a resource allocation device.
所述系统中包括:The system includes:
时隙配置装置,用于针对网络中任意两个发生CRS位置冲突的相邻小区,将其中一个小区使用的特殊子帧中的DwPTS时隙配置为长DwPTS时隙,将另一个小区使用的特殊子帧中的DwPTS时隙配置为短DwPTS时隙;The time slot configuration device is used for configuring the DwPTS time slot in the special subframe used by one cell as a long DwPTS time slot for any two adjacent cells in the network where CRS position conflict occurs, and configuring the special subframe used by the other cell as a long DwPTS time slot. The DwPTS slot in the subframe is configured as a short DwPTS slot;
资源分配装置,用于确定出与相邻小区发生CRS位置冲突、且配置了长DwPTS时隙的小区下属的终端中符合要求的终端,所述符合要求包括:位于所属小区边缘、且临近与所属小区发生CRS位置冲突的相邻小区;将确定出的终端调度至所属小区使用的特殊子帧中的DwPTS时隙进行数据传输。The resource allocation device is used to determine a terminal that meets the requirements among the terminals of the cell subordinate to the cell that has a CRS position conflict with the adjacent cell and is configured with a long DwPTS time slot. Adjacent cells where the CRS positions of the cells collide; the determined terminal is scheduled to the DwPTS time slot in the special subframe used by the cell for data transmission.
所述时隙配置装置中包括:The time slot configuration device includes:
时隙配置模块,用于针对网络中任意两个发生CRS位置冲突的相邻小区,将其中一个小区使用的特殊子帧中的DwPTS时隙配置为长DwPTS时隙,将另一个小区使用的特殊子帧中的DwPTS时隙配置为短DwPTS时隙。The time slot configuration module is used to configure the DwPTS time slot in the special subframe used by one cell as a long DwPTS time slot for any two adjacent cells in the network where CRS position conflict occurs, and configure the special subframe used by the other cell to be a long DwPTS time slot. The DwPTS slots in the subframe are configured as short DwPTS slots.
时隙配置模块中又可具体包括:The time slot configuration module may specifically include:
第一处理单元,用于获取网络中各小区的CRS位置分析结果,其中,每个小区的CRS位置分析结果包括:该小区是否与相邻小区发生CRS位置冲突以及该小区所需配置的DwPTS时隙类型;The first processing unit is used to obtain the CRS position analysis results of each cell in the network, wherein the CRS position analysis results of each cell include: whether the cell has a CRS position conflict with an adjacent cell and when the DwPTS required to be configured by the cell gap type;
其中,对于任意两个发生CRS位置冲突的相邻小区,其中一个小区使用的特殊子帧中的DwPTS时隙所需配置的类型为长DwPTS时隙,另一个小区使用的特殊子帧中的DwPTS时隙所需配置的类型为短DwPTS时隙;Among them, for any two adjacent cells where the CRS position conflict occurs, the DwPTS time slot in the special subframe used by one of the cells needs to be configured as a long DwPTS time slot, and the DwPTS time slot in the special subframe used by the other cell needs to be configured as a long DwPTS time slot. The type of configuration required for the time slot is short DwPTS time slot;
根据所述分析结果完成对小区的时隙配置;completing the time slot configuration for the cell according to the analysis result;
或者,or,
第二处理单元,用于针对网络中的每个小区,分别进行以下处理:根据自动邻区关系发现功能,确定该小区是否与相邻小区发生CRS位置冲突,如果是,则获取与该小区发生CRS位置冲突的相邻小区的标识,并将获取到的标识与该小区的标识进行比较,如果该小区的标识较大,则将该小区使用的特殊子帧中的DwPTS时隙配置为长DwPTS时隙,否则,将该小区使用的特殊子帧中的DwPTS时隙配置为短DwPTS时隙。The second processing unit is used to perform the following processing for each cell in the network: according to the automatic neighbor cell relationship discovery function, determine whether the cell has a CRS position conflict with an adjacent cell, and if so, obtain the CRS position conflict with the cell. The identity of the adjacent cell whose CRS position conflicts, and compares the obtained identity with the identity of the cell. If the identity of the cell is larger, configure the DwPTS time slot in the special subframe used by the cell as a long DwPTS Otherwise, configure the DwPTS slot in the special subframe used by the cell as a short DwPTS slot.
第一处理单元和第二处理单元还可进一步用于,将网络中各小区使用的特殊子帧中的UpPTS时隙占用的OFDM符号数均配置为相同。The first processing unit and the second processing unit may be further configured to configure the number of OFDM symbols occupied by the UpPTS time slots in the special subframes used by each cell in the network to be the same.
较佳地,Preferably,
长DwPTS时隙占用的OFDM符号数为:9、10、11或12;The number of OFDM symbols occupied by the long DwPTS time slot is: 9, 10, 11 or 12;
短DwPTS时隙占用的OFDM符号数为:3;The number of OFDM symbols occupied by the short DwPTS slot is: 3;
UpPTS时隙占用的OFDM符号数为:1或2。The number of OFDM symbols occupied by the UpPTS time slot is: 1 or 2.
所述资源分配装置中包括:The resource allocation device includes:
确定模块,用于确定出与相邻小区发生CRS位置冲突、且配置了长DwPTS时隙的小区下属的终端中符合要求的终端,所述符合要求包括:位于所属小区边缘、且临近与所属小区发生CRS位置冲突的相邻小区;将确定出的终端通知给调度模块;A determining module, configured to determine a terminal that meets the requirements among the terminals of the cell subordinate to the cell that has a CRS position conflict with an adjacent cell and is configured with a long DwPTS time slot. Adjacent cells where the CRS position conflict occurs; the determined terminal is notified to the scheduling module;
所述调度模块,用于将确定出的终端调度至所属小区使用的特殊子帧中的DwPTS时隙进行数据传输。The scheduling module is configured to schedule the determined terminal to the DwPTS time slot in the special subframe used by the cell to which it belongs for data transmission.
具体地,specifically,
确定模块针对与相邻小区发生CRS位置冲突、且配置了长DwPTS时隙的小区下属的每个终端,分别进行如下处理:获取该终端测量并上报的与所属小区发生CRS位置冲突的相邻小区的参考信号接收功率RSRP值,确定获取到的RSRP值与该终端所属小区的RSRP值之差的绝对值是否位于区间{a,b}内,如果是,则确定该终端为符合要求的终端;其中,a和b均大于或等于0,且b大于a。The determination module performs the following processing for each terminal subordinate to the cell that has a CRS position conflict with a neighboring cell and is configured with a long DwPTS time slot: Obtain the neighboring cell measured and reported by the terminal that has a CRS position conflict with the cell to which it belongs Determine whether the absolute value of the difference between the acquired RSRP value and the RSRP value of the cell to which the terminal belongs is within the interval {a, b}, and if so, determine that the terminal is a qualified terminal; Wherein, both a and b are greater than or equal to 0, and b is greater than a.
在实际应用中,上述时隙配置装置和资源分配装置具体部署在网络中的何处可根据实际需要而定,比如,时隙配置装置可位于操作维护中心(OMC,Operations MaintenanceCenter)中,资源分配装置可位于基站中。时隙配置装置可在网络规划、部署完成后执行自身功能,考虑到网络情况可能发生变化,如发生小区增加或减少,因此时隙配置装置可周期性或事件性地重复执行自身功能。同样,考虑到终端的位置可能发生移动等,资源分配装置也可周期性或事件性地重复执行自身功能,具体实现均为本领域公知,不再赘述。In practical applications, where the above-mentioned time slot configuration device and resource allocation device are deployed in the network may be determined according to actual needs, for example, the time slot configuration device may be located in an Operations Maintenance Center (OMC, Operations Maintenance Center), and The device may be located in a base station. The time slot configuration device can perform its own functions after the network planning and deployment are completed. Considering that the network conditions may change, such as the increase or decrease of cells, the time slot configuration device can repeatedly perform its own functions periodically or eventually. Similarly, considering that the location of the terminal may move, etc., the resource allocation device may also perform its own function repeatedly periodically or event-wise. The specific implementations are well known in the art and will not be repeated here.
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。To sum up, the above are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.
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