Cell pci allocation method in mobile communication system

A technology of a mobile communication system and an allocation method, applied in the field of cell PCI allocation of mobile communication systems

Active Publication Date: 2019-09-20
CHINA ELECTRONICS TECH GRP NO 7 RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Based on this, it is necessary to provide a cell PCI allocation method for a mobile communication system to improve the performance of terminal wireless transmission, cell reselection, and handover operations for the above-mentioned interference suppression problem.

Method used

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  • Cell pci allocation method in mobile communication system
  • Cell pci allocation method in mobile communication system
  • Cell pci allocation method in mobile communication system

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Experimental program
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Embodiment Construction

[0050] Embodiments of the cell PCI allocation method of the mobile communication system of the present invention will be described below in conjunction with the accompanying drawings.

[0051] ①The nodes referred to in this article are cell nodes;

[0052] ②The community referred to:

[0053] First-level neighbors: the immediate neighbors of the current cell;

[0054]Second-level neighbors: neighbors of the immediate neighbors of the current cell;

[0055] Third-level neighbors: the neighbors of the immediate neighbors of the current cell;

[0056] ③Intra-eNB: Intra-eNB handover, that is, handover between two cells under the same eNB;

[0057] ④Inter-eNB: local mobility anchor in handover.

[0058] refer to figure 1 as shown, figure 1 It is the flowchart of the method for assigning the PCI of the mobile communication system of the present invention, comprising the following steps:

[0059] Step (1), obtaining the PCI set A of the third-level neighbors of the current nod...

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Abstract

The invention relates to a cell PCI allocation method of a mobile communication system, comprising the following steps of: acquiring a PCI set A of a third-stage neighbor cell of a current node, a PCI set B available for the current node and a PCI set C available in a network, wherein the third-stage neighbor cell is a neighbor cell of the neighbor cell of a direct neighbor cell of a current cell; acquiring a PCI set D with PCI interference in a first-stage neighbor cell PCI in an Intra-eNB and an Inter-eNB, wherein the first-stage neighbor cell is the direct neighbor cell of the current cell; respectively acquiring a node PCI different from the PCI set D from the PCI set A, the PCI set B and the PCI set C, thereby forming a PCI set Cx, a PCI set Bx and a PCI set Ax; and respectively selecting an element from the PCI set Cx, the PCI set Bx and the PCI set Ax , and allocating the selected element as the PCI of the current node. With the technology of the cell PCI allocation method of the mobile communication system, interference suppression of uplink and downlink pilot signals under the condition of same-frequency networking is avoided, and operating performances, such as terminal wireless transmission, cell reselection and switching, are improved.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a cell PCI allocation method of a mobile communication system. Background technique [0002] PCI (Physical Cell ID, physical cell identification) is a wireless signal identification for a terminal to distinguish different cells in a mobile communication system. For example, the total number of PCIs in the Long-Term Evolution (LTE) system is 504, and the value ranges from 0 to 503, divided into 168 groups, and each group contains 3 PCIs. It is inevitable to multiplex the PCIs in actual networking, which may cause conflicts or confusion due to the small multiplexing distance of the same PCIs. [0003] In the communication industry, the graph coloring method is often used in PCI allocation. The graph coloring method is a classic method of graph theory. Given an undirected connected graph G and m different colors, use these colors as the m of the graph G Vertex coloring...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W8/26H04W16/12
Inventor 刘为廖仁波王琳闵铁锐
Owner CHINA ELECTRONICS TECH GRP NO 7 RES INST
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