Self-configuration method of physical district ID in LTE cellular network
A technology of physical cells and cellular cells, which is applied in network planning, electrical components, wireless communication, etc., can solve problems such as difficulties in network upgrades, achieve the effects of improving reselection efficiency, reducing the possibility of conflicts and confusion, and reducing interference
Inactive Publication Date: 2012-03-28
XIDIAN UNIV
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[0014] Aiming at the contradiction between the limitation of the number of physical cell IDs and the huge number of cells and the difficulty of network upgrade in traditional planning methods, the present invention proposes a method for self-configuring physical cell IDs in LTE cellular networks, making full use of physical cell IDs Spatial multiplexing, to configure the newly introduced wireless cells with no conflict and no confusion of physical cell IDs, so as to adapt to the trend of coexistence of multiple types of base stations in heterogeneous networks in the future
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[0051] refer to figure 2 , the specific implementation steps of the present invention are as follows:
[0052] 1. Configuration steps of the identification segment in the cluster
[0053] In step 1, the base station divides the base station distribution area into closely connected square virtual cells by constructing a virtual grid.
[0054] Since the base station uses the address of the virtual cell as its physical cell ID, in order to avoid address conflicts, it should meet the following requirements when dividing virtual cells: each virtual cell contains only one base station on average, and the division of virtual cells is as follows: image 3 shown. image 3 In , the regular hexagon with solid line represents the cell, the base station is located in the center of the cell, and the square with dotted line represents the virtual cell.
[0055] In the uniformly distributed area of N base stations is S field In the area of , the average number n of base stations in a...
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The invention discloses a self-configuration method of a physical district ID in a LTE cellular network, mainly solving the problem of contradiction between limited number of PCIs and large number of wireless districts in a LTE system. In the self-configuration method, a base station divides a distribution area into closely connected square virtual districts according to network scale; a local unique virtual district address is allocated to each virtual district according to a spatial multiplexing principle; the base station acquires the located virtual district address through mapping according to self geographical position and takes the address as an identification section in a PCI cluster; an OAM confirms a used address collection and initializes a standby address collection; conflict resolution is carried out in cellular districts with conflict occurrences; identification sections in the PCI cluster are configured to newly introduced cellular districts; the OAM updates the standbyaddress collection in real time according to a report from the base station; and the OAM completes allocation of the identification sections among PCI clusters. The invention effectively alleviates the contradiction between the limited number of PCIs and the large number of wireless districts, can better adapt to the trend of coexistence of various base stations in a future heterogeneous network,and is convenient for network dilatancy.
Description
technical field [0001] The present invention relates to the field of wireless communication, in particular to the third-generation mobile communication long-term evolution 3GPP LTE system, and specifically proposes a distributed method for automatically configuring physical cell IDs based on geographic location information of a base station eNB. Background technique [0002] In the third-generation mobile communication long-term evolution system, 504 physical cell IDs are supported, so the multiplexing of physical cell IDs in different cells is inevitable. In the 3GPP technical specification TS 36.902V1.0.1, it is clarified that the allocation of physical cell IDs should follow the following two guidelines: [0003] No conflict, that is, one wireless cell cannot use the same physical cell ID as its neighbor cell; [0004] No confusion, ie one radio cell cannot have neighbor cells using the same physical cell ID. [0005] The above principles can be summarized as that withi...
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IPC IPC(8): H04W72/00H04W16/30
Inventor 盛敏刘凯史琰李建东李红艳黄超郭重涛刘国庆
Owner XIDIAN UNIV