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Method and system for estimating and regulating mobile terminal frequency deviation

A frequency offset estimation and mobile terminal technology, which is applied in transmission systems, baseband system components, and shaping networks in transmitters/receivers. Simple and effective frequency offset estimation and frequency offset adjustment, realizing the effect of frequency offset estimation and frequency offset adjustment

Inactive Publication Date: 2007-01-31
ST ERICSSON SEMICON BEIJING
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Problems solved by technology

[0010] However, the above-mentioned devices and methods are not suitable for frequency offset estimation and frequency offset adjustment of mobile terminals in the case of co-frequency network deployment in TD-SCDMA system, so it is necessary to propose a co-frequency cell in co-frequency TD-SCDMA system Method and system for frequency offset estimation and frequency offset adjustment

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  • Method and system for estimating and regulating mobile terminal frequency deviation
  • Method and system for estimating and regulating mobile terminal frequency deviation
  • Method and system for estimating and regulating mobile terminal frequency deviation

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Embodiment Construction

[0049] Such as figure 1 As shown, the mobile terminal frequency offset estimation method of the present invention includes the following steps:

[0050]In the effective same-frequency cell detection step, the effective same-frequency cell detection module uses the downlink synchronization code SYNC-DL or the midamble in time slot #0 to calculate the RSCP (Received Signal Code Power, received signal code) corresponding to each cell of the same frequency power), and obtain effective same-frequency cells according to the RSCP of the same-frequency cells and the set detection threshold;

[0051] Effective co-frequency cell frequency offset calculation steps, according to the frequency offset estimation device / method of the patent application with the application number 200410078003, the effective co-frequency cell frequency offset calculation module is based on the channel profile window, and detects the effective co-frequency in the maximum channel profile window. The multipath ...

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Abstract

The invention discloses a method and system for estimating and adjusting the frequency offset of the mobile terminal, which is applicable for TD-SCDMA mobile communication network with the same frequency. The detecting procedure obtains the available areas with the same frequency according to the power and threshold of the received telephone number. The calculating procedure calculates estimated frequency offset values about all the described areas. The combine procedure combines all the offset values to give the final value about the mobile terminals.

Description

technical field [0001] The invention relates to a time-division synchronous code division multiple access TD-SCDMA mobile communication system, in particular to a method and a device for terminal frequency offset estimation and frequency offset adjustment in the case of same-frequency network deployment in the TD-SCDMA mobile communication system. Background technique [0002] With the development of mobile communication technology and the global rise of 3G (third generation mobile communication), wireless resources, as a limited resource, are becoming more and more tense. [0003] For the TD-SCDMA system, one of the mainstream standards of 3G, the allocated radio resources are also very limited. In order to improve the spectrum utilization rate of the TD-SCDMA system, the same frequency networking has become the most effective solution. [0004] In the mobile communication system, when the user terminal is turned on, there is a certain frequency deviation between the carri...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/32H04B1/10H04B1/12H04B1/707H04L25/03
Inventor 牟秀红董霄剑
Owner ST ERICSSON SEMICON BEIJING