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Physical cell identification (PCI) allocation method and system

A physical cell identification and physical cell technology, applied in the field of communication, can solve problems such as heavy workload and low efficiency, achieve the effects of large multiplexing distance, prevent PCI conflicts and confusion, and reduce the incidence of PCI conflicts

Active Publication Date: 2014-04-09
GUANGDONG PLANNING & DESIGNING INST OF TELECOMM
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on this, it is necessary to provide a physical cell identifier PCI allocation method and system for the problems that the PCI allocation method is difficult to avoid cell confusion, heavy workload, and low efficiency.

Method used

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  • Physical cell identification (PCI) allocation method and system
  • Physical cell identification (PCI) allocation method and system
  • Physical cell identification (PCI) allocation method and system

Examples

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Embodiment Construction

[0020] see figure 1 , figure 1 It is a schematic flowchart of the first embodiment of the physical cell identity PCI allocation method of the present invention.

[0021] The physical cell identity PCI allocation method of this embodiment includes the following steps:

[0022] Step 101, acquiring base station information and initial PCI information of each physical cell, and adjacent information between each physical cell.

[0023] Step 102, constructing a PCI planning model through the base station information of each physical cell and the adjacency information between each physical cell, wherein the constraints of the PCI planning model include that the modules of adjacent physical cells are different, and the target of the PCI planning model The function includes a PCI multiplexing distance maximum function.

[0024] Step 103, taking initial PCI information of each physical cell as a variable of the PCI planning model, solving the PCI planning model, and obtaining optimal...

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Abstract

The invention discloses a physical cell identification (PCI) allocation method and a system. The method comprises: obtaining base station information and initial PCI information of all physical cells, and adjacency information among the physical cells; building a PCI planning model based on the base station information of the physical cells and the adjacency information among the physical cells, and forming the PCI planning model, wherein the constraint condition of the PCI planning model includes that the models 3 of adjacent physical cells are different, and an objective function of the PCI planning model includes a maximum PCI multiplexing distance function; using the initial PCI information of the physical cells as a variable of the PCI planning model, solving the PCI planning model, and obtaining the optimal PCI information of the physical cells; and allocating PCI for the physical cells according the optimal PCI information. By implementation of the method and the system in the invention, PCI conflicts are prevented, and the multiplexing distance of identical PCI is ensured to the largest, thereby further reducing the occurrence rate of the PCI conflicts.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a PCI allocation method and system for physical cell identifiers. Background technique [0002] After decades of rapid development and evolution, communication technology has evolved to the LTE stage. Compared with the previous 2G / 3G, LTE has undergone great changes, and LTE network planning and design is even more important. LTE cellular networking adopts orthogonal frequency division multiplexing technology, and uses PCI (Physical Cell Identify) to identify and distinguish sectors. PCI directly determines the cell synchronization sequence and affects the scrambling methods of multiple physical channels. In the LTE system, there are a total of 504 physical cell IDs, which are divided into 168 groups, and each group contains 3 different IDs. In actual network planning, the number of cells is far greater than 504, which means that PCI needs to be multiplexed. Un...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/18H04W16/02G06F19/12
Inventor 丁胜培李炯城肖恒辉陈运动赖志坚
Owner GUANGDONG PLANNING & DESIGNING INST OF TELECOMM
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