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Distribution method and device for physical cell identities

A technology of physical cell identification and allocation method, which is applied in the field of allocation of physical cell identification, can solve problems such as complex algorithms, and achieve the effect of reducing complexity and improving efficiency

Inactive Publication Date: 2014-01-22
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the algorithm is relatively complex, and sometimes it is necessary to repeatedly calculate the correlation between adjacent cells, etc.

Method used

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  • Distribution method and device for physical cell identities
  • Distribution method and device for physical cell identities
  • Distribution method and device for physical cell identities

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Embodiment Construction

[0033] In order to improve the efficiency of PCI allocation, reduce the complexity of the allocation process, and work normally without OMC access, in this embodiment, OMC is no longer used, and it is only initiated when the base station is powered on or when PCI conflicts or confusion are found. PCI assignment process. And the cell can be deleted and built in the base station according to the business situation to make the PCI take effect. In the method for allocating PCI in this embodiment, the base station stores and maintains a list of physical cell identifiers (PCI_Table). When the cell is newly activated, or PCI conflict or confusion occurs, the acquisition or re-acquisition of the PCI_Table is completed through the interaction of messages between the base stations, and the PCI is allocated or re-allocated according to the acquired PCI_Table.

[0034] In this embodiment, the base station is taken as an example to illustrate the PCI allocation method in this embodiment. ...

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Abstract

The invention discloses a distribution method and device for physical cell identities. The method includes: in initial power-up, a network device acquires a physical-cell-identity table (PCI_Table) from an adjacent network device, wherein in the PCI_Table, occupancy information of a PCI of a cell under the network device and occupancy information of PCIs of the adjacent cell and an adjacent cell of the adjacent cell are marked; and the network device selecting an unoccupied PCI as the PCI of the cell of the network device itself and generating a PCI_Table of the network device according to the marked occupancy information of the PCIs in the acquired PCI_Table. The distribution method and device for the physical cell identities are capable of improving PCI distribution efficiency and reducing complexity of the distribution process and probabilities of another conflict or confusion generated by the distribution and solving a problem that newly-established base stations cannot be distributed at high efficiency in a concentrated distribution process at the same time.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a method and device for allocating physical cell identifiers. Background technique [0002] With the continuous development of network technology and communication technology, LTE (Long Term Evolution, Long Term Evolution) has attracted much attention due to its features such as high data rate, low delay, and packet transmission. [0003] The Physical Cell Identity (PCI) is an identifier used by the LTE network to uniquely determine a cell on the physical layer, and is used to generate a synchronization signal, through which a user terminal (UE) can determine the cell it is in. The value range of PCI is 0 to 503, which means that the PCI in the network generally has the same situation, and PCI conflicts (such as figure 1 As shown, the PCIs of adjacent cells are the same) and confusion (such as figure 2 As shown, the PCI of two neighboring cells of a certain cell i...

Claims

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Application Information

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IPC IPC(8): H04W16/02
Inventor 闫永军
Owner ZTE CORP
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