Estimation method and device for TD-SCDMA system code resource allocation

Abstract

The invention discloses a method for evaluating code resource distributing of a TD-SCDMA system, which comprises the following steps: multiplexing factors of scrambling codes with the same frequency in each cell are counted; multiplexing factors of synchronous codes at a downlink with the same frequency are counted; the multiplexing factors of the scrambling codes with the same frequency and the multiplexing factors of the synchronous codes at the downlink with the same frequency in the cell are weighted and added together to obtain evaluating factors of code resource distributing of the cell; then the evaluating factors of the code resource distributing of each cell are weighted and added together to obtain evaluating factors of the overall code resource distributing of the network, and the evaluating factors of the overall code resource distributing of the network show the quality of the corresponding distributing proposal of code resource. The invention also discloses a device for evaluating the code resource distributing. The technical proposal disclosed by the invention fully considers the specific applicable environment and utilizes the specific path information and predicted information of spreading loss which can be provided by programming tools to cause the code resource distributing to be closer to reality and lead to easy realization in the network programming tools.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, specifically, the present invention relates to the field of network planning of code division multiple access mobile communication system. Background technique [0002] In the third-generation mobile communication technology, different technical characteristic parameters are usually used to distinguish signals of adjacent cells. The code resource is a set of key parameters in the TD-SCDMA (Time Division-Synchronized Code Division Multiple Access) system. [0003] According to 3GPP (Third Generation Partnership Project, Third Generation Partnership Project) TS25.223, the code resources used in the TD-SCDMA system can be divided into 32 groups. Each code group includes: 1 downlink synchronization code, numbered from 0 to 31, used to distinguish different cells during the initial cell search; 8 uplink synchronization codes, numbered from 0 to 255, used for random access of the ...

AI Technical Summary

Problems solved by technology

This difference leads to different optimal allocation schemes, lack of unified evaluation standards, and it is difficult for network planners to choose

[0016] (2) The correlation of composite codes is not combined with specific scenarios

The above technical solution does not consider the different impacts on the multiplexing of scrambling codes under different signal propagation conditions

[0018] (4) Although similar codeword resource allocation methods have been widely used in TD-SCDMA wireless network planning tools combined with geographic information, the code resource allocation process is different from other stages of network planning, such as the field strength prediction stage, It is completely independent and does not make full use of the refined results obtained in the previous planning; at the same time, it lacks a comparative evaluation method for different codeword resource allocation schemes

Therefore, the final allocation scheme obtained by network planners is likely to be ineffective in actual application

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