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Method and device for acquiring multi-frame synchronization

An acquisition method and frame synchronization technology, applied in the field of communication, can solve the problem of low success probability of cell search and achieve the effect of improving the success probability

Active Publication Date: 2013-08-07
SANECHIPS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0016] Aiming at the problem that the multiframe synchronization does not consider the interference in the downlink pilot signal, the success probability of the cell search will be relatively low. Therefore, the main purpose of the present invention is to provide a time-division duplex mobile communication system to obtain complex A frame synchronization scheme to solve the above problems

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  • Method and device for acquiring multi-frame synchronization
  • Method and device for acquiring multi-frame synchronization
  • Method and device for acquiring multi-frame synchronization

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Embodiment Construction

[0038] Functional Overview

[0039] The embodiment of the present invention provides a scheme for obtaining multi-frame synchronization in a time-division duplex mobile communication system, using a channel estimation algorithm for parallel / serial partial interference cancellation in the frequency domain, performing two channel estimations on the broadcast channel and downlink pilot positions, and then The phase difference between the channel estimates of the two channels is compared to obtain control multiframe synchronization detection. In this process, interference cancellation channel estimation is used, and the present invention uses a frequency-domain parallel partial interference cancellation algorithm to perform channel estimation. This method has a strong ability to resist co-channel interference, and can also be used in the receiving process of constant time slots , thereby improving the success probability of the cell search.

[0040] It should be noted that, in th...

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Abstract

A method and equipment for detecting multi-frame synchronization are provided in the present invention, and the method includes: implementing channel estimation to broadcast channels and downlink pilot channels respectively, comparing the phase difference for the channel estimation between the broadcast channels and the downlink pilot channels, and detecting multi-frame synchronization according to the phase difference. With the present invention, the probability of success for cell search is increased.

Description

technical field [0001] The present invention relates to the field of communication, in particular to a method and device for acquiring multiframe synchronization, which are applied in time division duplex mobile communication systems. Background technique [0002] Time Division-Synchronous Code Division Multiple Access (TD-SCDMA for short) is an international standard for third-generation mobile communications proposed by China. The main technical features of this standard include: [0003] The receiver uses advanced joint detection technology to reduce inter-user / inter-frequency interference, improve end-user quality, and increase system capacity; [0004] Time Division Duplex (TDD for short) is adopted, and the uplink and downlink work on the same frequency point. In this way, the NodeB side can obtain the downlink channel quality through the uplink channel detection without the channel quality feedback information on the UE side, so as to provide The realization of smart...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W56/00H04L25/02
CPCH04W56/00H04J11/0069
Inventor 程健
Owner SANECHIPS TECH CO LTD