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Dowlink disturbant-code dynamic distribution of wireless telecommunication network

A wireless communication network, dynamic allocation technology, applied in wireless communication, network planning, radio/induction link selection and arrangement, etc., can solve the problem that downlink scrambling code allocation cannot be realized, avoid inter-cell interference, improve overall performance, The effect of reliable network architecture

Inactive Publication Date: 2007-01-17
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0008] However, the current static allocation mechanism of scrambling codes cannot realize the allocation of downlink scrambling codes when a large number of (pico) cells or mobile cells randomly access the network, and the scrambling codes of each cell can only be determined at the beginning of configuration.

Method used

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  • Dowlink disturbant-code dynamic distribution of wireless telecommunication network
  • Dowlink disturbant-code dynamic distribution of wireless telecommunication network
  • Dowlink disturbant-code dynamic distribution of wireless telecommunication network

Examples

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Embodiment Construction

[0022] Such as image 3 As shown, it is a flow chart of the method for dynamically allocating downlink scrambling codes in the wireless communication network of the present invention. First, set the scrambling code set (step 101); then, traverse the adjacent cells of the cell to be assigned a scrambling code, and exclude the scrambling codes that have been occupied by the adjacent cells from the scrambling code set (step 102); After the adjacent cells are scrambled, the scrambling code set is selected from the free and available scrambling codes to allocate scrambling codes to the cells to be allocated (step 103).

[0023] Here, traversing the adjacent cells of the cell to be allocated with scrambling codes, and finding the scrambling codes occupied by these adjacent cells may adopt a general downlink basic scrambling code acquisition method in wideband code division multiple access systems. First, the Node B (Node B) determines the code group to which the basic scrambling co...

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Abstract

The method comprises: in the first, setting a scramble code set; traversing all the adjacent cells of the cells the the scramble codes are allocated for; removing the scramble code already occupied by the neighboring cells from the scramble code; allocating scramble code for the cell required to get the scramble code by using those scramble codes not being allocated.

Description

technical field [0001] The invention relates to a downlink scrambling code allocation mechanism in the third generation wireless communication network, in particular to a dynamic allocation method of a downlink scrambling code in a WCDMA (Wideband Code Division Multiple Access) network. Background technique [0002] In the WCDMA network, in addition to the spread spectrum operation, the transmission end simultaneously performs the scrambling (code) process, such as figure 1 shown. The purpose is to distinguish different terminals or base stations (depending on uplink transmission or downlink transmission). Scrambling is performed on top of spread spectrum, so it does not change the signal bandwidth, but it can effectively distinguish signals from different sources. Through scrambling, even if different transmitters use the same spreading code for spreading, it will not affect the normal detection of the signal. [0003] Specifically, in the uplink, the scrambling code pla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/36H04W16/10
Inventor 侯志华王之曦
Owner ZTE CORP
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