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Multi-carrier frequency cell major and minor carrier frequency adjusting method in TD-SCDMA system

A technology of TD-SCDMA and adjustment method, which is applied in the field of adjustment of primary and secondary carrier frequencies, can solve the problems of complex switching process and low probability of successful switching, and achieve the effect of reducing the burden

Inactive Publication Date: 2006-02-15
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, users who switch to this cell measure the information of the main carrier frequency, but may be finally allocated on the auxiliary carrier frequency, so the handover process is more complicated, and the probability of successful handover is not high

Method used

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  • Multi-carrier frequency cell major and minor carrier frequency adjusting method in TD-SCDMA system
  • Multi-carrier frequency cell major and minor carrier frequency adjusting method in TD-SCDMA system
  • Multi-carrier frequency cell major and minor carrier frequency adjusting method in TD-SCDMA system

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Embodiment Construction

[0035] In a multi-carrier frequency cell, a cell is configured with multiple carrier frequencies (generally, carrier frequencies with the same coverage), and all carrier frequencies form a carrier frequency group G (F0, F1...Fn), and both primary and secondary carrier frequencies can receive new services. However, new user services in the current cell (referring to users who are newly powered on or switched to the cell) can only be accessed on the main carrier frequency. The main difference between the main carrier frequency and the auxiliary carrier frequency is that: the main carrier frequency TS0 (time slot 0) and DwPTS (downlink pilot time slot) time slots are active, and the auxiliary carrier frequency TS0 and DwPTS time slots are turned off. The UE reads broadcast messages and paging messages on the new main carrier frequency. That is to say, the signal is sent in the TS0 and DwPTS time slots of the main carrier frequency. The TS0 and DwPTS of the auxiliary carrier freq...

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Abstract

The adjust method for main and auxiliary carrier for multi carrier sub zone in TD-SCDMA system comprises: selecting a carrier as main carrier and the other as auxiliary carrier; creating sub zone, activating the TSO and DwPTS of main carrier to shield the auxiliary's and configure the public channel on main carrier; the P-CCPCH of main carrier uses full-direction coverage mode, all UE receives broadcast information from main carrier; detecting the power, disturbance and load of main carrier to evaluate the available resource of main carrier; when there is carrier has larger available resource, switching the main and auxiliary carrier. The invention can accommodate user both for main and auxiliary carrier with less collision possibility and high success rate.

Description

Technical field: [0001] The invention relates to the adjustment of primary and secondary carrier frequencies in a multi-carrier frequency cell in a TD_SCDMA (Time Division-Synchronous Code Division Multiple Access) system. Background technique: [0002] In order to meet the continuous increase of traffic in a cell, it is usually necessary to use multiple carrier frequencies in a cell. However, if the cell is configured according to the current TD-SCDMA protocol, and several carrier frequencies with DwPTS and TS0 are used in one cell, then a UE (User Equipment, user) at the cell junction will face difficulties in cell search, Problems such as measurement complexity and switching difficulties. [0003] In the multi-carrier frequency suggestion of the TD Alliance (hereinafter referred to as "suggestion"), for each cell, one of the allocated frequency points is determined as the main carrier frequency, and the remaining frequency points are used as auxiliary carrier frequencies...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/38H04Q7/36H04W4/06H04W16/10H04W24/00H04W72/04
Inventor 汪孙节张军吴本寿
Owner ZTE CORP
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