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Method for allocating physical cell identity (PCI) and base station

A cell physical address, physical address technology, applied in the field of communication, can solve the problem that the base station cannot choose PCI, etc., to avoid conflicts, avoid interference between cells, and improve the success rate

Active Publication Date: 2013-01-16
ZTE CORP
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Problems solved by technology

[0007] Considering the problem in the related art that the base station cannot select the PCI for the cells it supports when the distributed method is used for PCI allocation, the present invention is proposed. For this reason, the main purpose of the present invention is to provide a distribution of cell physical addresses Method and base station to solve the above problems

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  • Method for allocating physical cell identity (PCI) and base station
  • Method for allocating physical cell identity (PCI) and base station
  • Method for allocating physical cell identity (PCI) and base station

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[0041] When a new eNB is added to the system, it is necessary to realize the physical address allocation of the cell under the new eNB through automatic configuration, so that the cell starts to work normally. figure 2 It is a flow chart of eNB automatically configuring PCI allocation for its supported cells according to the present invention. In order to clearly describe, the following uses the eNB to allocate PCI for cell 1 (that is, the target cell mentioned above) as an example to describe the embodiment of the present invention. Instructions, including the following processing.

[0042] S1. The OAM sends the available PCI set to the eNB. For example, the OAM sends a list of available PCI values ​​to the eNB according to the PCI planning principle and according to the requirements of the operator.

[0043] S2. The eNB obtains the PCI set used by the surrounding cells of cell 1 through UE reporting, X2 interface reporting, and base station self-monitoring. In order to prev...

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Abstract

The present invention discloses a Physical Cell ID (PCI) allocation method and a base station. The PCI allocation method includes the following steps: a target base station obtains a usable PCI list sent by an Operations And Maintenance (OAM) function entity, and removes limited PCIs of the target cell from the usable PCI list to obtain a selectable PCI set (step S102); the target base station obtains the E-UTRA Absolute Radio Frequency Channel Number (EARFCN) information of neighbour cells of serving cells via an X2 interface message, and obtains a first reference PCI set in a predefined manner, cell EARFCN information in the first reference PCI set is different from that of the target cell of the target base station (step S014); the target base station forms a second reference PCI set based on the intersection of the usable PCI list and the first reference PCI set (step S106); if the selectable PCI set is empty, then a PCI is randomly selected from the second reference PCI set as the target PCI (step S108). The success rate of the PCI allocation for the target cell is improved by the present invention.

Description

technical field [0001] The invention relates to the communication field, in particular to a cell physical address allocation method and a base station. Background technique [0002] With the development of mobile communication technology, in the Long Term Evolution (LTE for short) system, the number of evolved base stations (E-UTRAN Node B, eNB for short) will be relatively large. Installation, configuration and maintenance will consume a lot of manpower, material and financial resources. [0003] In order to reduce the operation and maintenance cost of the system, the concept of Self Organizing Network (SON for short) was created. It is a mobile communication network that can automatically install, configure, and maintain eNB. Compared with the previous manual maintenance method, SON can reduce the workload, thereby reducing the operator's operation and maintenance costs. [0004] For the SON, automatic configuration of a physical cell address (Physical Cell Id, referred ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W8/26H04W92/20
CPCH04W92/20H04W24/02H04W8/26H04W16/18H04W24/00
Inventor 韩立锋高音
Owner ZTE CORP
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