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Method for planning code resources in cell of SCDMA system

A technology of synchronous code division multiple access and resource planning, applied in the field of cell code resource planning

Active Publication Date: 2011-05-25
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] What the present invention aims to solve is the problem that unreasonable cell code resource planning leads to increased interference of neighboring cells, and proposes a cell code resource planning method for a synchronous code division multiple access system

Method used

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  • Method for planning code resources in cell of SCDMA system
  • Method for planning code resources in cell of SCDMA system
  • Method for planning code resources in cell of SCDMA system

Examples

Experimental program
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Embodiment Construction

[0043] The first step is downlink synchronization code planning.

[0044] This step may include the following sub-steps:

[0045] [1] Calculate the cross-correlation characteristics between the downlink synchronization codes corresponding to the two code groups;

[0046] [2] Change the code group sequence number until any two code groups are analyzed;

[0047] [3] Sort the variance of the cross-correlation modulus values ​​between downlink synchronization codes from small to large, and

[0048] Record the corresponding code group serial number.

[0049] The second step is planning the uplink synchronization code.

[0050] This step may include the following sub-steps:

[0051] [1] The two code groups correspond to the local cell and the neighboring cell respectively, analyze the situation that the uplink synchronization code corresponding to the neighboring cell passes the synchronization detection condition of the local cell, and count the number of random access errors;...

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Abstract

The method comprises: 1) planning the downlink sync code; 2) planning the uplink code; 3) setting the testing threshold. With jointly planning the downlink and uplink sync code, the interference from neighboring cells is reduced in the process of searching and building downlink cell and randomly accessing uplink.

Description

technical field [0001] The present invention relates to a cell code resource planning method of a Code Division Multiple Access (CDMA) communication system, in particular to the same-frequency networking and network planning in a Time Division Synchronous Code Division Multiple Access (TD-SCDMA) communication system in the wireless communication field A cell code resource planning method in the process. Background technique [0002] In existing wireless communication systems, one or more combinations of wireless resources such as Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA) or Code Division Multiple Access (CDMA) are usually used to form a multiple access system. , so as to provide business services for mobile users. For the third generation (3G) mobile system with CDMA as the main feature, it is necessary to allocate a certain cell codeword for each cell, and the codeword resources corresponding to different cells are also different, but ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J13/16H04W16/18
Inventor 秦洪峰康凤岐
Owner ZTE CORP
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