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Synchronous tracking and adjacent subdistrict distance measuring method and system

A technology of synchronization tracking and adjacent cells, applied in transmission systems, electrical components, etc., can solve problems such as the impact of SYNC-DL code synchronization performance, improve processing efficiency and anti-co-channel interference performance, reduce processing time, and improve flexibility. Effect

Active Publication Date: 2013-06-05
SANECHIPS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the actual environment, the SYNC-DL code may be interfered by the TS0 of the distant cell. When the same-channel interference is relatively strong, it may affect the synchronization performance of the SYNC-DL code.

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  • Synchronous tracking and adjacent subdistrict distance measuring method and system
  • Synchronous tracking and adjacent subdistrict distance measuring method and system
  • Synchronous tracking and adjacent subdistrict distance measuring method and system

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Embodiment Construction

[0046] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings and examples, so as to fully understand and implement the process of how to apply technical means to solve technical problems and achieve technical effects in the present invention.

[0047] figure 1 An embodiment of the method for synchronous tracking and neighbor cell path measurement of the present invention is shown. like figure 1 As shown, this embodiment mainly includes the following steps:

[0048] Step 110, determine a time window near the downlink pilot time slot of the antenna data, and obtain 2 times the sampling data in the time window; the time window includes the 64 chips where the downlink pilot code is located and its first 32 chips and the last 48 chips. chips, a total of 144 chips. The antenna data is sampled 4 times per chip, we need 2 times the sampling data, so we can take the first sampling point and the third sampling poin...

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Abstract

The invention discloses a synchronous tracking and adjacent subdistrict distance measuring method and a system. The down synchronous tracking and measuring can be realized in a TD-SCDMA system, wherein the method comprises the following steps: determining a time window near a down pilot frequency time interval of antenna data to obtain twice sampling data in the time window; carrying out interference elimination treatment on the twice sampling data to obtain signals after the interference elimination of each subdistrict; obtaining time delay function values of each subdistrct according to thesignals after the interference elimination of each subdistrict and down synchronous codes obtained in the terminal accession process; interpolating the time delay function values of each subdistrct to obtain interpolating sampling points and to calculate energy values; selecting a wave filtering factor for carrying out the wave filtering on the energy values of the interpolating sampling points according to the wave filtering factor to obtain the average value of the energy time delay function values; and carrying out the timed detection according to the average value of the energy time delayfunction values to complete the synchronous tracking and the adjacent subdistrict distance measuring. The invention improves the treatment efficiency and the same frequency interference resistance performance.

Description

technical field [0001] The invention relates to a time division synchronous code division multiple access system, in particular to a method and system for synchronous tracking and adjacent cell path measurement in the time division synchronous code division multiple access system. Background technique [0002] A time division synchronous code division multiple access (Time Division Synchronous Code Division Multiple Access, abbreviated as TD-SCDMA) system requires a base station and a mobile terminal to maintain high-precision synchronization. Since there is a frequency offset between the base station and the mobile terminal due to the drift of the crystal oscillator and the frequency offset caused by the movement of the mobile terminal, the receiving link must constantly adjust the frame boundary to maintain accurate synchronization between the base station and the mobile terminal. Serving cell frame boundaries are provided by the synchronization module. At the same time, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/7073H04B1/7107
Inventor 张皓
Owner SANECHIPS TECH CO LTD