OFDMA with adaptive subcarrier-cluster configuration and selective loading

CAFC
  • US 6,947,748 B2
  • Filed: 12/15/2000
  • Issued: 09/20/2005
  • Est. Priority Date: 12/15/2000
  • Status: Expired due to Fees
First Claim
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1. A method for subcarrier selection for a system employing orthogonal frequency division multiple access (OFDMA) comprising:

  • a subscriber measuring channel and interference information for a plurality of subcarriers based on pilot symbols received from a base station, wherein the subscriber measuring channel and interference information comprises the subscriber continuously monitoring reception of the pilot symbols known to the base station and measuring signal-plus-interference-to-noise ratio (SINR) of each cluster of subcarriers, and the subscriber measuring intra-cell traffic;

    the subscriber selecting a set of candidate subcarriers, wherein the subscriber selects candidate subcarriers based, at least in part, on the intra-cell traffic load balancing;

    the subscriber providing feedback information on the set of candidate subcarriers to the base station; and

    the subscriber receiving an indication of subcarriers of the set of subcarriers selected by the base station for use by the subscriber.

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