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Configuration method of cell code source in time-division synchronous CDMA system group network

A code division multiple access and time division synchronization technology, which is used in code division multiplexing systems, communication between multiple stations, multiplexing communication, etc. problem, to achieve the effect of saving frequency resources, improving frequency band utilization, and reducing interference

Inactive Publication Date: 2008-07-30
JIANGSU HONGCHENG FORGING MACHINE TOOL
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  • Claims
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AI Technical Summary

Problems solved by technology

Early mobile communication systems used a high-power base station to cover a large area, and the system bandwidth was severely limited, which could not meet the needs of mobile services

Method used

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  • Configuration method of cell code source in time-division synchronous CDMA system group network
  • Configuration method of cell code source in time-division synchronous CDMA system group network
  • Configuration method of cell code source in time-division synchronous CDMA system group network

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Embodiment Construction

[0040] Taking the 1×12 cell multiplexing mode as an example, the implementation of the technical solution of the present invention will be further described in conjunction with the drawings and specific embodiments.

[0041] In the TD-SCDMA system, different cells have different code group configurations. The cell code group configuration refers to the unique code groups of the cell. Different adjacent cells will be configured with different code groups. In the TD-SCDMA system, a total of 32 SYNC-DL codes are defined. Although the SYNC-DL codes have been optimized and screened when selecting the SYNC-DL codes, the pairwise correlation characteristics in the set of 1 to 32 SYNC-DL codes will still be different. has a difference. When the UE is located at the junction of the downlink pilot signal coverage of two base stations, and the distance between the UE and the two base stations is nearly equal and the shadow fading cross-correlation characteristics are strong, then the dow...

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Abstract

This invention relates to a configuration method for local area code work resource in TD-SCDMA system network, which utilizes the SYNC-DL code property to carry out first code word design on the basis of analyzing co-relation property of code words in TD-SCDMA system code set to eliminate the coincide codes of spread spectrum interfere codes, then utilizes the property of the perturbation codes to carry out a second time code word design to get a code word configuration pattern of a honey comb after multiplexing local area code words.

Description

technical field [0001] The present invention relates to a method for configuring cell code word resources in a Code Division Multiple Access (CDMA) system network, in particular to a Time Division-Sync Code Division Multiple Access (Time Division-Sync Code) in the field of mobile communications. A method for configuring cell codeword resources of a Division Multiple Access (hereinafter referred to as TD-SCDMA) system. The present invention is applicable to the TD-SCDMA system in the field of mobile communication, and is also applicable to all CDMA systems in the field of mobile communication, especially Time Division Duplex Code Division Multiple Access (Time Division Duplex mode of CDMA) (abbreviated as TDD-CDMA) system and all Synchronous Code Division Multiple Access (Sync Code Division Multiple Access) (referred to as SCDMA) system. Background technique [0002] In all existing mobile communication systems, one or more of Frequency Division Multiple Access (FDMA for sho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/26H04J13/00
Inventor 李萍曾召华
Owner JIANGSU HONGCHENG FORGING MACHINE TOOL
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