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Method and device for distributing physical cell identifiers

A technology of physical cell identification and cell global identification, which is applied in the field of communication, can solve problems such as PCI conflicts, and achieve the effect of improving reliability

Active Publication Date: 2009-10-28
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0011] Embodiments of the present invention provide a method and device for allocating physical cell identifiers to solve the problem of PCI conflicts in different frequency scenarios in the prior art

Method used

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  • Method and device for distributing physical cell identifiers
  • Method and device for distributing physical cell identifiers
  • Method and device for distributing physical cell identifiers

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Embodiment Construction

[0028] Such as Figure 9 As shown, cell 7 works at frequency f2; cell 1 to cell 6 work at frequency f1; cell 7 has a relatively large coverage area and covers cell 1 to cell 6 at the same time, that is, cell 1 to cell 6 are all of cell 7 Neighboring cells; cell 1 to cell 7 correspond to base stations eNB1 to eNB7 respectively;

[0029] In this scenario, if the UE in cell 7 is to be handed over to the cell with frequency f1, in order to avoid conflicts, it is required that the PCIs of cells 1 to 6 are different.

[0030] Assuming that cell 3 is a newly activated cell, when eNB assigns a PCI identifier to it, it should not only consider the same-frequency direct neighbors of cell 3 (cell 2 and cell 4), but also consider the same-frequency indirect neighbors of cell 3. Areas (cell 1, cell 5, and cell 6); only by ensuring that the final identity obtained by cell 3 is different from that of cells 1, 2, 4, 5, and 6, can the UE in cell 7 be handed over to the cell with frequency f1 ...

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Abstract

The invention discloses a method for distributing physical cell identifiers, which comprises the following steps: acquiring information on neighbor cells of a newly activated cell, wherein the information on the neighbor cells comprises physical cell identifiers PCI of the neighbor cells and the neighbor cells comprise cells having frequencies different from that of the newly activated cell; and acquiring the PCI selected by the newly activated cell according to the acquisition of the information on the neighbor cells. The embodiment of the invention also provides a base station. The method and the device can be used for the automatic distribution of the PCIs in a multiple frequency scene.

Description

technical field [0001] The invention relates to the communication field, in particular to a method and device for allocating physical cell identifiers in mobile communication. Background technique [0002] Although 3G (The 3G rd Generation, the third generation) network wireless performance has been greatly improved, but from the perspective of commercial operations, operators require lower network construction and operating costs in order to provide users with lower-priced network services to win market. The key to reducing operating costs is to reduce the manual network planning and optimization process and expand network automation functions. Currently, the automatic allocation of PCI (Physical cell ID, physical cell ID) is the focus of wireless network system planning and optimization. [0003] The PCI automatic allocation is completed by the eNB, and its main purpose is to automatically allocate a suitable PCI for a cell newly introduced by the eNB (Evolved Node B, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W88/08H04W88/18H04B7/26
CPCH04W16/24H04W36/0061
Inventor 亨利克王学龙汤斌淞张欢石小丽
Owner HUAWEI TECH CO LTD
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