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SOFT HANDOFF IN OFDMA SYSTEM

  • US 20110310848A1
  • Filed: 08/30/2011
  • Published: 12/22/2011
  • Est. Priority Date: 06/22/2004
  • Status: Active Grant
First Claim
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1. An orthogonal frequency division multiplexing access (OFDMA) system comprising:

  • a) a base station controller adapted to schedule data for a subscriber station during a soft handoff;

    b) a plurality of base stations operatively associated with said base station controller, each base station participating in said soft handoff being adapted to receive at least a portion of the scheduled data from said base station controller, and to transmit a first plurality of subcarriers to said subscriber station;

    said first plurality of subcarriers being defined in a soft handoff zone comprising a first dimension of subchannels, said first dimension of subchannels comprising said first plurality of subcarriers divided in a frequency domain; and

    a second dimension of divided and multiplexed orthogonal frequency division multiplexing (OFDM) symbols comprising said first plurality of subcarriers;

    said first plurality of subcarriers in said soft handoff zone having a subchannel definition.

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