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Whole-network LTE cell PCI planning method and device

A cell and planning technology, applied in the field of LTE network to achieve the effect of improving work efficiency

Active Publication Date: 2014-11-26
WUHAN HONGXIN TECH SERVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above problems, the purpose of the present invention is to provide a method and device for planning PCI of LTE cells in the whole network, aiming at solving the technical problem that PCI conflicts cannot be avoided in the existing LTE network

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  • Whole-network LTE cell PCI planning method and device
  • Whole-network LTE cell PCI planning method and device

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Embodiment 1

[0045] figure 1 It shows the flow of the method for planning the LTE cell PCI of the whole network provided by the embodiment of the present invention, and only shows the part related to the embodiment of the present invention for the convenience of description.

[0046] The method for planning the PCI of the whole network LTE cell provided by this embodiment includes the following steps:

[0047] Step S101, perform initialization planning for the PCI of the entire network.

[0048] First, you need to input the basic data parameter table, and classify the cells according to the base station according to the input parameter table, then arrange the cells in the whole network according to the latitude and longitude, and then assign PCI to each cell according to the planning rules.

[0049] When allocating, the PCIs of the three cells on the same base station should be planned sequentially. If a base station has only two sectors, one or two of the PCIs need to be discarded. If t...

Embodiment 2

[0068] Figure 4 The structure of the device for planning the LTE cell PCI of the whole network provided by the embodiment of the present invention is shown, and only the parts related to the embodiment of the present invention are shown for convenience of description.

[0069] The device for planning the LTE cell PCI of the whole network provided in this embodiment includes:

[0070] The preliminary planning module 41 is used for initial planning of the PCI of the whole network;

[0071] Matrix building module 42, used to build the whole network interference matrix;

[0072] Convergence judging module 43, used for calculating the fitness function value according to the interference matrix, and judging whether the convergence condition is satisfied;

[0073] The planning output module 44 is used to output the PCI planning of the whole network at this time when the convergence condition is met;

[0074] The re-planning module 45 is configured to perform crossover and mutatio...

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Abstract

The invention relates to the technical field of LTE networks and provides a whole-network LTE cell PCI planning method and device. The method includes the steps of planning the whole-network PCI initially, building a whole-network interference matrix, calculating an adaptability function value according to the interference matrix, judging whether the adaptability function value meets the condition of convergence or not, outputting the current whole-network PCI plan when the adaptability function value meets the condition of convergence, and carrying out crossing and variation for replanning when the adaptability function value does not meet the condition of convergence. The whole-network LTE cell PCI planning method and device are provided on the basis of a genetic algorithm. The interference matrix is built through the initialized whole-network PCI plan at first, the interference degree is evaluated by calculating the adaptability function value, whether crossing and variation are carried out on species again or not is determined until the optimal plane is output, network optimization personnel can be helped to plan the whole-network LTE cell PCI rapidly and accurately, and therefore the working efficiency of the network optimization personnel is improved.

Description

technical field [0001] The invention belongs to the technical field of LTE networks, and in particular relates to a method and device for planning PCI of LTE cells in the whole network. Background technique [0002] In the LTE system, the base station can self-configure the PCI of a certain cell, and according to the protocol TS 36.300, 504 PCI (Physical Layer Cell ID, physical layer cell identification) values ​​are defined in the LTE (LongTerm Evolution, long-term evolution) system ( 0 to 503), in this way, there must be situations where different cells use the same PCI. If the center frequencies of two cells using the same PCI are also the same, severe inter-cell interference will be caused. Therefore, the automatic configuration of the PCI of the cell must meet the requirements of non-conflict and non-confusion of PCIs. Among them, PCI non-conflict means that any two adjacent same-frequency cells cannot use the same PCI; PCI non-confusion means that no two same-frequen...

Claims

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Application Information

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IPC IPC(8): H04W16/18
Inventor 陈峰王伟胡志勇赵清阳许军
Owner WUHAN HONGXIN TECH SERVICE CO LTD
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