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Method for seeking inaccurate-clock base station in WCDMA system

A base station and clock technology, applied in code division multiplexing systems, electrical components, synchronization devices, etc., to achieve the effect of reducing workload, reducing overhead, and ensuring success rate

Inactive Publication Date: 2004-12-15
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the above problems and provide a method for finding base stations with inaccurate clocks in the WCDMA system, so that after the WCDMA system is put into operation, the base stations with unstable clocks can be automatically found out to make up for the base station construction time. lack of

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  • Method for seeking inaccurate-clock base station in WCDMA system
  • Method for seeking inaccurate-clock base station in WCDMA system
  • Method for seeking inaccurate-clock base station in WCDMA system

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Embodiment Construction

[0015] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0016] In this paper, the set of cells communicating with the mobile station is called the active set; the time when the mobile station receives the downlink data frame of a certain active set cell is called Rx; the time when the mobile station is sending uplink data frames is called Tx ; The time difference between the mobile station receiving the downlink data frame and uploading the uplink data frame is called Rx-Tx.

[0017] Since the mobile station maintains connections with multiple cells, the time for each cell to deliver the data frame to the mobile station is different, but the mobile station can only upload data at a fixed time. So Tx is the same for all connections, and Rx may be different for each connection. see figure 2 .

[0018] But the purpose of wireless interface synchronization is to enable all active set cells to...

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Abstract

This invention discloses a method for finding out base stations with not correct clocks to measure based on time difference between mobile station to each active set primary area (RX-TX), if RX-nom-TX exceeds the related threshold + / -delta, the said primary area information and reference information are calculated separately to sum up ; work side, so as to promptly locate out-of-step of the system.

Description

Technical field: [0001] The invention relates to a method for finding base stations with inaccurate clocks in a WCDMA cellular mobile communication system. Background technique: [0002] WCDMA is a spread spectrum communication technology. It was mainly used in military communications in the initial stage. Due to its excellent performance, it will also be widely used in the field of civil communications. There are already commercial WCDMA cellular mobile communication systems running in telecommunication networks. [0003] In the existing cellular mobile communication system, in order to improve the utilization rate of spectrum resources and the capacity of the entire system, the radio frequency power of the base station in the system is limited to a certain range (cell). When the mobile station is in the overlapping area of ​​multiple cells, the mobile station can maintain a communication connection with the multiple cells at the same time. Since the downlink signal can be combi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/04H04W56/00
Inventor 刘瑜涂悦
Owner HUAWEI TECH CO LTD