Method for optimizing master frequencies and scrambling codes of time division-code division multiple access (TD-CDMA) network base station based on genetic algorithm

A technology of TD-SCDMA and genetic algorithm, which is applied in the field of TD-CDMA network base station main frequency and scrambling code optimization based on genetic algorithm, to achieve the effect of speeding up and improving operating efficiency

Inactive Publication Date: 2013-01-23
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

[0005] In order to overcome the defects of the above-mentioned manual method for network optimization, the present invention provides a TD-CDMA network base station main frequency and scrambling code optimization method based on genetic algorithm, which has high optimization efficiency, low cost consumption, and is not easy to make mistakes

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  • Method for optimizing master frequencies and scrambling codes of time division-code division multiple access (TD-CDMA) network base station based on genetic algorithm
  • Method for optimizing master frequencies and scrambling codes of time division-code division multiple access (TD-CDMA) network base station based on genetic algorithm
  • Method for optimizing master frequencies and scrambling codes of time division-code division multiple access (TD-CDMA) network base station based on genetic algorithm

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Embodiment Construction

[0062] The key of the present invention lies in two points: one is checking whether the cell configuration conforms to the rules and repairing the configurations not conforming to the rules; the other is the realization of the genetic algorithm. The former is the basis for the realization of the latter, and the realization of the latter requires the application of the former method. The specific implementation methods of these two points are described below.

[0063] 1. Check whether the cell configuration conforms to the rules and repair the configurations that do not conform to the rules.

[0064] Analyze the main frequency and scrambling code allocation rules of the cell in practical applications:

[0065] Rule 1 - Cells with the same base station cannot have the same main frequency.

[0066] Rule 2 - If the main serving cell and the adjacent cell have the same primary frequency, they cannot be in the same compound scrambling code group and downlink synchronization code g...

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Abstract

The invention discloses a method for optimizing configuration of master frequencies and scrambling codes of a time division-synchronous code division multiple access (TD-CDMA) network base station based on a genetic algorithm. The method particularly comprises the following steps of: randomly distributing the master frequency and the scrambling code of each cell to form a community; examining and repairing a rule for each entity of the community; pairwise coupling the entities in the community randomly, and intersecting each pair of entities; examining and repairing the rules; mutating the master frequency and the scrambling code of each entity in the community; computing the total disturbance variable value of each entity after mutating, and reserving part of the entities of which the total disturbance variable values are small in the community; and performing the steps circularly till the preset stopping condition is achieved, and selecting the entity of which the optimization rate is highest from the last community, wherein the selected entity serves as the final configuration scheme. The invention also provides a system for implementing the method. In the process of performing a genetic algorithm, aiming at restriction of characteristics of a mobile communication network rule, a method for examining and repairing the rule is added, so that the speed of the genetic algorithm is improved, and the operating efficiency of the whole system is greatly improved.

Description

technical field [0001] The invention belongs to the field of mobile communication network optimization, in particular to a TD-CDMA network base station main frequency and scrambling code optimization method based on genetic algorithm. Background technique [0002] TD-SCDMA (Time Division Synchronization-Code Division Multiple Access) is one of the commonly used networks in mobile communications. The TD-SCDMA system uses technologies such as smart antennas, which can avoid interference from other users to the current user through beamforming technology. However, the interference cannot be completely avoided, because due to the complexity of the wireless propagation environment, multipath and time delay are unavoidable, which leads to a certain amount of interference in the TD-SCDMA system. Therefore, frequency and scrambling codes need to be detailed planning. [0003] At present, network optimization in many places in China mainly adopts manual methods, and solutions are g...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/02H04J13/16
Inventor 李炜陈曦李翔晨
Owner HUAZHONG UNIV OF SCI & TECH
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