CN104581649A - LTE trunking system frequency band selection method and device - Google Patents
LTE trunking system frequency band selection method and device Download PDFInfo
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Abstract
Description
技术领域technical field
本发明涉及频带选择技术领域,特别涉及一种LTE集群系统频带选择方法及装置。The present invention relates to the technical field of frequency band selection, in particular to a method and device for frequency band selection of an LTE trunking system.
背景技术Background technique
LTE(Long Term Evolution,长期演进)集群系统中包括两个逻辑信道,TCCH(集群控制信道)和TTCH(集群业务信道)。其中,TCCH为集群专用的点到多点下行信道,用于传输群组控制信息,如组呼建立、组呼释放、话语权通知以及短消息等。TTCH为集群专用的点到多点下行信道,用于传输群组下行业务数据。The LTE (Long Term Evolution, long-term evolution) trunking system includes two logical channels, TCCH (Trunking Control Channel) and TTCH (Trunking Traffic Channel). Among them, the TCCH is a point-to-multipoint downlink channel dedicated to the trunking, and is used to transmit group control information, such as group call establishment, group call release, speech right notification, and short messages. The TTCH is a point-to-multipoint downlink channel dedicated to the cluster, and is used to transmit group downlink service data.
目前,TCCH和TTCH均采用动态调度或半静态调度的方式,如图1所示,在小区A和小区B交叉区域D的用户,同时接收到小区A和小区B的TCCH和TTCH信息,且该两个小区TCCH和TTCH信息在频域上都是在PDSCH(Physical Downlink Shared Channel,物理下行链路共享信道)上使用相同算法进行调度。At present, both TCCH and TTCH adopt dynamic scheduling or semi-persistent scheduling. As shown in Figure 1, users in cell A and cell B cross area D receive TCCH and TTCH information of cell A and cell B at the same time, and the The TCCH and TTCH information of the two cells are scheduled using the same algorithm on the PDSCH (Physical Downlink Shared Channel, Physical Downlink Shared Channel) in the frequency domain.
然而,现有技术中的频域资源相同,从而在进行资源调度时产生严重的干扰,导致集群组呼信息无法解析。However, in the prior art, the frequency domain resources are the same, which causes severe interference during resource scheduling, and makes it impossible to analyze the cluster group call information.
发明内容Contents of the invention
(一)解决的技术问题(1) Solved technical problems
本发明解决的技术问题是:如何解决用户在进行资源调度时干扰严重的问题。The technical problem solved by the invention is: how to solve the problem of serious interference of users during resource scheduling.
(二)技术方案(2) Technical solution
为解决上述问题,本发明提供了一种LTE集群系统频带选择方法,包括:In order to solve the above problems, the invention provides a method for selecting an LTE trunking system frequency band, comprising:
计算各个小区的物理小区标识PCI的模3值,为模3值不同的小区分配不同的集群组呼频段;Calculating the modulo 3 value of the physical cell identity PCI of each cell, and assigning different cluster group call frequency bands to cells with different modulo 3 values;
利用分配的频段,发送分配的所述集群组呼数据。The allocated trunking group call data is sent by using the allocated frequency band.
优选地,所述计算各个小区的物理小区标识PCI的模3值,进一步包括:Preferably, the calculation of the modulo 3 value of the physical cell identity PCI of each cell further includes:
为共站小区分配PCI模3值不同的PCI,为相邻小区分配PCI模3值不同的PCI。PCIs with different PCI modulo 3 values are allocated to co-sited cells, and PCIs with different PCI modulo 3 values are allocated to adjacent cells.
优选地,所述为模3值不同的小区分配不同的集群组呼频段,具体包括:Preferably, the allocation of different cluster group call frequency bands to cells with different modulo 3 values specifically includes:
将频率划分成三个频段;Divide the frequency into three bands;
当小区PCI的模3值分别为0、1或2时,则为该小区任意分配一个频段的频率。When the modulo 3 values of the PCI of the cell are 0, 1 or 2, the frequency of a frequency band is arbitrarily allocated to the cell.
优选地,所述三个频段的长度均等分。Preferably, the lengths of the three frequency bands are equally divided.
为解决上述问题,本发明还提供了一种LTE集群系统频带选择装置,包括:In order to solve the above problems, the present invention also provides a LTE trunking system frequency band selection device, including:
计算模块,用于计算各个小区的物理小区标识PCI的模3值,并将计算结果传输给分配模块;A calculation module, configured to calculate the modulo 3 value of the physical cell identity PCI of each cell, and transmit the calculation result to the allocation module;
所述分配模块,用于根据所述计算结果为模3值不同的小区分配不同的集群组呼频段,并将分配结果传输给发送模块;The allocation module is configured to allocate different cluster group call frequency bands to cells with different modulo 3 values according to the calculation results, and transmit the allocation results to the sending module;
所述发送模块,用于利用分配的频段,发送分配的所述集群组呼数据。The sending module is configured to use the allocated frequency band to send the allocated cluster group call data.
优选地,所述分配模块,还用于为共站小区分配PCI模3值不同的PCI,为相邻小区分配PCI模3值不同的PCI。Preferably, the allocation module is further configured to allocate PCIs with different PCI modulo 3 values to co-sited cells, and allocate PCIs with different PCI modulo 3 values to adjacent cells.
优选地,所述装置还包括:Preferably, the device also includes:
划分模块,用于将频率划分成三个频段;A division module, configured to divide the frequency into three frequency bands;
所述分配模块,还用于当小区PCI的模3值分别为0、1或2时,则为该小区任意分配一个频段的频率。The allocation module is further configured to arbitrarily allocate a frequency of a frequency band to the cell when the modulo 3 values of the PCI of the cell are 0, 1 or 2 respectively.
优选地,所述三个频段的长度均等分。Preferably, the lengths of the three frequency bands are equally divided.
优选地,所述装置设置在基站中。Preferably, the device is set in a base station.
(三)有益效果(3) Beneficial effects
本发明通过提供一种LTE集群系统频带选择方法及装置,通过计算各个小区PCI的模3值,为PCI的模3值不同的小区分配不同的频段,从而减少了用户在进行资源调度时的干扰,进而避免了边缘用户集群组呼资源无法解析的问题。The present invention provides a method and device for selecting a frequency band of an LTE cluster system, and by calculating the modulus 3 value of PCI of each cell, different frequency bands are allocated to cells with different modulus 3 values of PCI, thereby reducing the interference of users when performing resource scheduling , thereby avoiding the problem that the group call resource of the edge user group cannot be resolved.
附图说明Description of drawings
图1是本发明实施例一提供的方法流程图;FIG. 1 is a flowchart of a method provided by Embodiment 1 of the present invention;
图2是本发明实施例二提供的方法流程图;Fig. 2 is a flow chart of the method provided by Embodiment 2 of the present invention;
图3是本发明实施例二提供的7个小区相邻示意图;Fig. 3 is a schematic diagram of seven neighboring cells provided by Embodiment 2 of the present invention;
图4是本发明实施例二提供的7个小区组呼频段配置示意图;FIG. 4 is a schematic diagram of configuration of seven cell group call frequency bands provided by Embodiment 2 of the present invention;
图5是本发明实施例二提供的3个小区相互相邻示意图;FIG. 5 is a schematic diagram of three adjacent cells provided by Embodiment 2 of the present invention;
图6是本发明实施例三提供的装置结构示意图。Fig. 6 is a schematic structural diagram of a device provided by Embodiment 3 of the present invention.
具体实施方式Detailed ways
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍,显而易见地,下面描述中的附图是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.
实施例1:Example 1:
为了解决现有技术中用户在进行资源调度时干扰严重的问题,本发明实施例提供了一种LTE集群系统频带选择方法,该方法流程图如图1所示,该方法包括:In order to solve the problem in the prior art that users have serious interference during resource scheduling, an embodiment of the present invention provides a method for selecting an LTE cluster system frequency band. The method flow chart is shown in FIG. 1 , and the method includes:
步骤101:计算各个小区PCI的模3值,为模3值不同的小区分配不同的集群组呼频段;Step 101: Calculate the modulus 3 value of PCI of each cell, and allocate different cluster group call frequency bands for cells with different modulus 3 values;
步骤102:利用分配的频段,发送分配的所述集群组呼数据。Step 102: Send the allocated cluster group call data by using the allocated frequency band.
本发明实施例通过计算各个小区PCI的模3值,为PCI的模3值不同的小区分配不同的频段,从而减少了用户在进行资源调度时的干扰,进而避免了边缘用户集群组呼资源无法解析的问题。The embodiment of the present invention allocates different frequency bands to cells with different PCI modulo 3 values by calculating the modulo 3 value of each cell's PCI, thereby reducing user interference during resource scheduling, thereby avoiding group call resources of edge user clusters Unresolvable problem.
通过为共站小区分配PCI模3值不同的PCI,为相邻小区分配PCI模3值不同的PCI,从而使得当根据PCI模3值的不同分配不同的频段时,使得相邻小区或共站小区使用的频率为不同频段,减少了小区间的干扰,提高了集群组呼资源的接收效果。By assigning PCIs with different PCI modulus 3 values to co-sited cells, and assigning PCIs with different PCI modulus 3 values to adjacent cells, so that when different frequency bands are allocated according to different PCI modulo 3 values, adjacent cells or co-sited The frequencies used by the cells are in different frequency bands, which reduces the interference between cells and improves the reception effect of trunking group call resources.
通过将频率划分成三个频段,则PCI模3的值共有3个,根据PCI模3值不同,为小区分配不同的频段,从而减少了小区间的干扰。By dividing the frequency into three frequency bands, there are three PCI modulo 3 values in total, and different frequency bands are allocated to the cells according to different PCI modulo 3 values, thereby reducing interference between cells.
实施例2Example 2
为解决用户在进行资源调度时干扰严重的问题,本发明第二个实施例提供了一种LTE集群系统频带选择方法,该方法流程图如图2所示,包括:In order to solve the problem of serious interference of users during resource scheduling, the second embodiment of the present invention provides a method for selecting an LTE cluster system frequency band. The method flow chart is shown in Figure 2, including:
步骤201:为各个小区分配集群组呼数据;Step 201: Allocating cluster group call data for each cell;
其中,集群组呼资源包括集群控制信道资源和集群业务信道资源。Wherein, the trunking group call resources include trunking control channel resources and trunking service channel resources.
步骤202:根据物理小区标识PCI分配算法,为各个小区分别分配PCI;Step 202: according to the physical cell identifier PCI allocation algorithm, assign PCI to each cell;
其中,PCI(Physical Cell Identifier,物理小区标识)在TD-LTE(TimeDivision Long Term Evolution,分时长期演进)系统中共有504个,如果在同一小区中出现同频同PCI,则会引起强干扰。而受限于目前TD-LTE的可用频段,TD-LTE很可能采取同频组网的方式,这使得PCI规划尤为重要。为避免邻区间干扰,应避免PCI的模3值相同的PCI分配给邻区。Among them, there are 504 PCI (Physical Cell Identifier) in the TD-LTE (Time Division Long Term Evolution) system. If the same PCI with the same frequency occurs in the same cell, it will cause strong interference. However, limited by the available frequency bands of TD-LTE at present, TD-LTE is likely to adopt the same-frequency networking method, which makes PCI planning particularly important. In order to avoid interference between adjacent areas, PCIs with the same modulo 3 value of PCI should be avoided from being allocated to adjacent areas.
在本发明实施例中,PCI的分配方式为:为共站小区分配PCI模3值不同的PCI,为相邻小区分配PCI模3值不同的PCI。In the embodiment of the present invention, the PCI allocation method is as follows: assign PCIs with different PCI modulo 3 values to co-sited cells, and assign PCIs with different PCI modulo 3 values to adjacent cells.
步骤203:将频率划分成三个频段;Step 203: divide the frequency into three frequency bands;
其中,将频率划分成的三个频段的长度可以均等的,也可以是不均等的。Wherein, the lengths of the three frequency bands divided into frequency bands may be equal or unequal.
在本发明实施例中,将频率划分成的三个频段分别为F0、F1和F2。例如频率为100MHz,则将频率划分成三个频段,F0=1~33MHz,F1=34~66MHz,F2=67~100MHz。In the embodiment of the present invention, the frequency is divided into three frequency bands respectively F0, F1 and F2. For example, if the frequency is 100MHz, divide the frequency into three frequency bands, F0=1~33MHz, F1=34~66MHz, F2=67~100MHz.
步骤204:计算各个小区PCI的模3值,为模3值不同的小区分配不同的集群组呼频段;Step 204: Calculate the modulus 3 value of PCI of each cell, and allocate different cluster group call frequency bands for cells with different modulus 3 values;
其中,Fn=PCI mod3,当计算小区的Fn=0,则为该小区分配F0频段;当计算小区的Fn=1,则为该小区分配F1频段;当计算小区的Fn=2,则为该小区分配F2频段。Among them, Fn=PCI mod3, when calculating the Fn=0 of the cell, the F0 frequency band is allocated to the cell; when calculating the Fn=1 of the cell, the F1 frequency band is allocated to the cell; The cell allocates the F2 frequency band.
在本发明实施例中,为模3值不同的小区分配的不同的频段,不限于上述分配方法,可以为模3值为0、1或2的任意分配F1、F2或F3。In the embodiment of the present invention, the different frequency bands allocated to cells with different modulo 3 values are not limited to the above-mentioned allocation method, and F1, F2 or F3 can be arbitrarily allocated to cells with modulo 3 values of 0, 1 or 2.
步骤205:根据分配的频段,利用该分配的频段发送分配的集群组呼数据。Step 205: According to the allocated frequency band, use the allocated frequency band to send the allocated trunking group call data.
如图3所示为紧密相邻的7个小区,在为这7个小区分配频段时,利用PCI的分配方法,分别为该7个小区分配频段。As shown in FIG. 3 , there are 7 closely adjacent cells. When allocating frequency bands to these 7 cells, use the allocation method of PCI to allocate frequency bands to the 7 cells respectively.
其中,为共站小区分配的PCI的模3值不同,为相邻小区分配的PCI的模3值不同。进而为该7个小区分配了不同的频段。Wherein, the modulo 3 values of the PCIs allocated to the co-sited cells are different, and the modulo 3 values of the PCIs allocated to adjacent cells are different. Furthermore, different frequency bands are allocated to the seven cells.
为小区0分配了F0频段,为小区3、小区5和小区7均分配了F1频段,为小区2、小区4和小区6均分配了F2频段,如图4所示。The F0 frequency band is allocated to Cell 0, the F1 frequency band is allocated to Cell 3, Cell 5, and Cell 7, and the F2 frequency band is allocated to Cell 2, Cell 4, and Cell 6, as shown in Figure 4.
如图5所示,为三个相互相邻的小区分配频段示意图,根据本发明实施例提供的方法,为小区A分配F0频段,为小区B分配F1频段,为小区C分配F2频段。从而避免了边缘用户集群组呼资源解调困难问题,解决了语音/视频卡顿问题。As shown in Figure 5, it is a schematic diagram of frequency band allocation for three adjacent cells. According to the method provided by the embodiment of the present invention, the F0 frequency band is allocated to the cell A, the F1 frequency band is allocated to the cell B, and the F2 frequency band is allocated to the cell C. In this way, the problem of difficult demodulation of group call resources of edge user groups is avoided, and the problem of voice/video jamming is solved.
实施例3:Example 3:
本发明实施例还提供了一种LTE集群系统频带选择装置,如图6所示,包括:The embodiment of the present invention also provides an LTE trunking system frequency band selection device, as shown in Figure 6, including:
计算模块601,用于计算各个小区的物理小区标识PCI的模3值,并将计算结果传输给分配模块;A calculation module 601, configured to calculate the modulo 3 value of the physical cell identity PCI of each cell, and transmit the calculation result to the allocation module;
所述分配模块602,用于根据所述计算结果为模3值不同的小区分配不同的集群组呼频段,并将分配结果传输给发送模块;The allocation module 602 is configured to allocate different cluster group call frequency bands to cells with different modulo 3 values according to the calculation results, and transmit the allocation results to the sending module;
所述发送模块603,用于利用分配的频段,发送分配的所述集群组呼数据。The sending module 603 is configured to use the allocated frequency band to send the allocated cluster group call data.
进一步的,所述分配模块,还用于为共站小区分配PCI模3值不同的PCI,为相邻小区分配PCI模3值不同的PCI。Further, the allocation module is further configured to allocate PCIs with different PCI modulo 3 values to co-sited cells, and allocate PCIs with different PCI modulo 3 values to adjacent cells.
进一步的,所述装置还包括:Further, the device also includes:
划分模块,用于将频率划分成三个频段;A division module, configured to divide the frequency into three frequency bands;
所述分配模块,还用于当小区PCI的模3值分别为0、1或2时,则为该小区任意分配一个频段的频率。The allocation module is further configured to arbitrarily allocate a frequency of a frequency band to the cell when the modulo 3 values of the PCI of the cell are 0, 1 or 2 respectively.
进一步的,所述三个频段的长度均等分。Further, the lengths of the three frequency bands are equally divided.
进一步的,所述装置设置在基站中。Further, the device is set in a base station.
本发明实施例通过利用计算模块计算各个小区PCI的模3值,并利用分配模块为PCI的模3值不同的小区分配不同的频段,从而减少了用户在进行资源调度时的干扰,进而避免了边缘用户集群组呼资源无法解析的问题。In the embodiment of the present invention, by using the calculation module to calculate the modulo 3 value of the PCI of each cell, and using the allocation module to allocate different frequency bands for the cells with different modulo 3 values of the PCI, thereby reducing the interference of the user when performing resource scheduling, thereby avoiding The problem that the edge user cluster group call resource cannot be resolved.
以上实施方式仅用于说明本发明,而并非对本发明的限制,有关技术领域的普通技术人员,在不脱离本发明的精神和范围的情况下,还可以做出各种变化和变型,因此所有等同的技术方案也属于本发明的范畴,本发明的专利保护范围应由权利要求限定。The above embodiments are only used to illustrate the present invention, but not to limit the present invention. Those of ordinary skill in the relevant technical field can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, all Equivalent technical solutions also belong to the category of the present invention, and the scope of patent protection of the present invention should be defined by the claims.
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