×

Soft handoff in Ofdma system

  • US 20090129334A1
  • Filed: 06/22/2005
  • Published: 05/21/2009
  • Est. Priority Date: 06/22/2004
  • Status: Active Grant
First Claim
Patent Images

1. A method for facilitating soft handoffs in an orthogonal frequency division multiplexing access (OFDMA) system comprising the steps of:

  • a) dividing subcarriers in a plurality of orthogonal frequency division multiplexing (OFDM) symbols;

    b) allocating said divided subcarriers into subchannels;

    c) dividing and multiplexing said plurality of OFDM symbols;

    d) defining a soft handoff zone comprising a first dimension of said subchannels and a second dimension of said divided and multiplexed plurality of OFDM symbols;

    said soft handoff zone having a first plurality of subcarriers, said first plurality of subcarriers having a subchannel definition; and

    e) transmitting said first plurality of subcarriers in said soft handoff zone to a station.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×