Time-division multiplexed pilot signal for integrated mobile broadcasts

Time-division multiplexed pilot signal for integrated mobile broadcasts

  • CN 102,257,736 B
  • Filed: 11/18/2009
  • Issued: 02/22/2017
  • Est. Priority Date: 11/20/2008
  • Status: Active Grant
First Claim
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1. a kind of transmit in the mobile communications network conveying multicast broadcast multimedia service MBSFN using Single Frequency Network wideBroadcast/multicast signals make at least two base stations in the neighbor cell of described mobile communications network use same channelization codes andScrambler is transmitting one or more same traffic channel and the method transmitting identical first pilot frequency channel signal, methods describedIncluding:

  • Each time slot for one or more frames of described broadcast/multi broadcast signal obtains the first sequence of pilot symbols so that instituteState the first sequence of pilot symbols each time slot of given frame is changed;

    Described first sequence of pilot symbols is extended for each time slot by the first channel code;

    Using scrambler, described first pilot channel is formed for described first sequence of pilot symbols of each time slot scrambling extensionSignal;

    AndTransmit described first pilot frequency channel signal so that one of transmission during described first pilot frequency channel signal and each time slotOr multiple traffic channel signal is time-multiplexed, and with all time slots of one or more of frames during transmission secondPilot frequency channel signal is code division multiplexing,Wherein said second pilot frequency channel signal is to be formed by following operation:

    By orthogonal with described first channel codeSecond channel code extends the second sequence of pilot symbols and the described second frequency pilot sign sequence using described scrambler scrambling extensionArrange to form described second pilot frequency channel signal, andWherein described first sequence of pilot symbols is obtained for each time slot to include each time slot is obtained according to minor functionObtain described first sequence of pilot symbols:

    Function corresponding to a part for the scrambler of described time slot.

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