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Scrambling distribution method for mobile communication system

A mobile communication system and code allocation technology, applied in wireless communication, transmission systems, electrical components, etc., can solve problems such as interference from adjacent cells, achieve the effects of reducing interference, increasing system capacity, and improving demodulation performance

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

AI Technical Summary

Problems solved by technology

Since the data received by the receiving end contains not only the data of the own cell, but also the data of other cells, it will introduce interference from neighboring cells

Method used

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  • Scrambling distribution method for mobile communication system
  • Scrambling distribution method for mobile communication system
  • Scrambling distribution method for mobile communication system

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Experimental program
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Embodiment Construction

[0012] The specific implementation manners of the present invention will be described in detail below with reference to the accompanying drawings.

[0013] After analyzing the correlation results of all scrambling code pairs in the mobile communication system, according to the characteristics of codeword pairs, the basic principle of scrambling code planning is given. According to this principle, the interference between cells can be effectively reduced, system performance can be improved, and system capacity can be increased. In a mobile communication system network, a cell is assigned a scrambling code, and adjacent cells are assigned different scrambling codes. For a pair of scrambling codes, a cross-correlation evaluation value (R) can be used to measure the correlation between the two scrambling codes.

[0014] For example, in the TD-SCDMA system, a total of 128 scrambling codes (the length of each scrambling code is 16) are defined, divided into 32 groups, each group has...

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Abstract

The invention discloses a scrambling code distribution method for a mobile communication system, which comprises the following steps: S102, acquiring the relativity between the scrambling codes of the mobile communication system; and S104, distributing the scrambling codes for communities to be distributed with the scrambling codes according to the relativity between the scrambling codes. The scrambling code distributing method can effectively reduce the code word interference among the communities, improve the demodulation performance of the system and improve the system capacity.

Description

technical field [0001] The present invention relates to the communication field, and more specifically relates to a method for allocating scrambling codes in a mobile communication system. Background technique [0002] In the Time Division Synchronous Code Division Multiple Access (TD-SCDMA) system, the system scrambling code (i.e., cell code) is specific to each cell, and different cells are allocated with different scrambling codes. community interference. Since the data received by the receiving end includes not only the data of the own cell, but also the data of other cells, interference from adjacent cells will be introduced. The magnitude of mutual interference between different codewords is different. During network planning, each cell is assigned a scrambling code. The networking performance will be affected by the allocation of scrambling code resources in the cells. Therefore, it is necessary to plan the scrambling code resources to obtain a better scrambling co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W16/02H04B1/7097
Inventor 李萍芮华史雯
Owner ZTE CORP