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Method for code channel allocation in TD-SCDMA access system

A code division multiple access and code channel allocation technology, which is applied in the field of code channel allocation in time division multiplexing code division multiple access system, can solve the problem of not considering the code tree allocation status of the cell and reducing the effective utilization of resources , did not choose the most discretization degree and other issues

Inactive Publication Date: 2006-07-19
ZTE CORP
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AI Technical Summary

Problems solved by technology

[0005] The existing code channel search algorithm only selects the code channel for the UE (user equipment), does not take into account the code tree allocation status of the cell, does not select the code channel with the smallest degree of discretization, and reduces the effective utilization of resources

Method used

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  • Method for code channel allocation in TD-SCDMA access system
  • Method for code channel allocation in TD-SCDMA access system
  • Method for code channel allocation in TD-SCDMA access system

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Embodiment Construction

[0021] Such as Figure 6 As shown, the method for code channel allocation in the time division multiplexing code division multiple access system proposed by the present invention comprises the following steps:

[0022] (1) Enter the code channel layer to be allocated;

[0023] (2) Search the occupied free code channel of the brother code channel in the code channel layer where, if find the idle code channel occupied by the brother code channel, enter step (5), otherwise enter step (3);

[0024] (3) judge whether the code channel layer of place is 0 code channel layer, if enter step (5), otherwise enter step (4);

[0025] (4) change over to the parent code channel layer of described code channel layer, return to step (2);

[0026] (5) Allocate the data to the upper sub-code channel of the current code channel in the code channel layer to be allocated, and return the search success.

[0027] Combine below Figure 1 to Figure 4 , the method for code channel allocation in the ...

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Abstract

The invention relates to a method for searching code channel in the access system of mobile communication, which can distribute code channels in the time division multiple access system, which can solve the problems that high disperser degree and lower effective utilization rate in present technique. The inventive method comprises: when the user starts the request, distributing the data to free code channel of code channel layer that relative to the request resource number; and distributing the data to the free code channel first whose nearby code channel is possessed. The invention can reduce the frequency of code channel resource whose spread-spectrum factor is small, to reduce the disperse degree and improve the utilization of code channel, and improve the access rate of system service.

Description

technical field [0001] The invention relates to a method for allocating code channels in an access system in the field of mobile communication, in particular to a method for allocating code channels in a time division multiplexing code division multiple access system in the third generation mobile communication. Background technique [0002] In the third-generation mobile communication system with time division multiplexing and code division multiple access, physical channels are identified by combinations of carrier frequency / frame / subframe / time slot / spreading code. The following takes the TD-SCDMA time division synchronous code division multiple access system as an example to illustrate. In TD-SCDMA, every 10ms on each designated carrier frequency (carrier frequency band) is a frame, each frame is divided into two subframes, the structure of the two subframes is the same, and each subframe is divided into 7 Regular time slots and 3 special time slots, the user’s service d...

Claims

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Application Information

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IPC IPC(8): H04J13/02H04J11/00H04J13/20
Inventor 李廉张军
Owner ZTE CORP
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