Method and device for arrangement of physical cellular identities
A technology of physical cell identification and cell, which is applied in wireless communication, electrical components, network planning, etc., and can solve problems such as inability to reuse PCI resources, low storage efficiency and overall deployment efficiency, waste of PCI resources, etc.
Active Publication Date: 2013-07-10
ZTE CORP
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[0004] The first is to deploy cells according to the free resource list of PCI, that is, deploy different PCIs in different cells, and put the deployed PCIs into the list of occupied PCIs. When the list of free PCIs is empty, the cells deploy PCIs. Failed, the strategy is simple, but the PCI resources cannot be reused. In the PCI deployment of hundreds of cells, the PCI resources are greatly wasted
[0005] The second is mainly NTT’s current LTE SON deployment strategy, which deploys cells according to the PCI idle resource list, but not all cells deploy different PCIs. According to the strategy, some cells can deploy the same PCI, but the deployment process Algorithms such as matrix multiplication are used to determine the deployment matrix. The efficiency of resource storage and resource deployment is (O(N^2)). This strategy can save PCI resources, and PCI resources can be reused. However, in the PCI of hundreds of cells During the deployment, the storage efficiency and the overall deployment efficiency are very low, and there is a great waste of storage resources and CPU resources
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[0101] This implementation mode is applied to PCI deployment in an LTE SON network and PCI deployment in a heterogeneous network LTE SON scenario. PCI is deployed through SON nodes distributed on base stations and other network nodes, see figure 2 , SON nodes are implemented in centralized, distributed and hybrid ways. This embodiment implements PCI automatic deployment based on SON in LTE, and provides a PCI deployment strategy based on SON in LTE that can reuse PCI resources and has high storage and deployment efficiency. The deployment strategy and process are based on the logical operation linear PCI deployment model , at the same time, the PCI deployment strategy comprehensively considers the non-conflict and non-confusion strategy of frequency relationship and position relationship, and extends to the non-conflict and non-confusion strategy of attributes related to PCI deployment supported by all LTE protocols, and considers the same attribute constraints Under the pre...
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The invention discloses a method and a device for arrangement of physical cellular identities. The method includes the following steps: a cell relationship table is generated according to cell relationship attributes, the conflict-free strategy and / or the non-confusion strategy, the cell relationship table comprises one or multiple cell pairs, and cells contained in each cell pair cannot use the same physical cellular identity (PCI); the PCIs are arranged based on the cell relationship table, wherein different PCIs are arranged for the cells which cannot use the same PCI, and an identical PCI is arranged for the cells which can use the same PCI; the conflict-free strategy means that the cells which can have a conflict when the same PCI is used cannot use the identical PCI according to the cell relationship attributes; and the non-confusion strategy means that the cells which can be confused when the same PCI is used cannot use the identical PCI. The method and the device for the arrangement of the physical cellular identities improve the reusing rate of PCI resources, and achieve the effect that the PCI resources of the cells are arranged in an optimized mode.
Description
technical field [0001] The present invention relates to the technical field of LTE (Long Term Evolution, long-term evolution) SON (Self-configuring and Self-optimizing Network, self-configuration liberalization network) technical field in the field of wireless communication, and particularly relates to a method and device for deploying physical cell identifiers. Background technique [0002] Such as figure 1 As shown, in wireless communication LTE (Long Term Evolution, long-term evolution) or wireless heterogeneous network LTE, MME (Mobility Management Entity, mobile management entity) connects to the base station through S1, and HeNB (Home eNodeB, home base station) can directly Connect to MME through HeNB GW (Home eNodeB Gateway, home base station gateway), HeNB introduces CSG (Closed Subscriber Group, Closed Subscriber Group), and specific UE (User Equipment, user equipment) enters the corresponding HeNB through CSG admission control. PCI (Physical Cell Id, Physical Cell...
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IPC IPC(8): H04W16/18H04W72/00
CPCH04W16/18
Inventor 郎洁吕巍曾国旭楼红伟赵庆元
Owner ZTE CORP