A kind of downlink synchronization method of broadband time and division duplex cellular system

A kind of downlink synchronization method of broadband time and division duplex cellular system

  • CN 1,996,791 B
  • Filed: 01/06/2006
  • Issued: 09/09/2015
  • Est. Priority Date: 01/06/2006
  • Status: Active Grant
First Claim
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1. a downlink synchronization method of broadband time and division duplex cellular system, comprising:

  • A. in descending pilot frequency time slot in the frame structure, an OFDM symbol is set;

    B. with an OFDM symbol structure descending synchronous signal channel in descending pilot frequency time slot, concrete, described descending synchronous signal channel is constructed by the OFDM symbol in one or several OFDM symbol of downstream traffic slot TS0 and descending pilot frequency time slot, and the symbol in downstream traffic slot TS0 adopts frequency pilot sign;

    The time-domain received signal of the OFDM symbol received is carried out difference and is correlated with by c.UE, obtains down-going synchronous information;

    The subcarrier spacing that described OFDM symbol adopts is identical with the OFDM transmitting data acquisition in downstream traffic slot;

    The OFDM symbol subcarrier of each structure descending synchronous signal channel is portion subcarriers frequency band or whole OFDM sub-carrier band;

    When the bandwidth of described descending synchronous signal channel adopts OFDM portion subcarriers structure, different districts or sector identical or different for the sub-carrier positions constructing descending synchronous signal channel.

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