Methods and apparatus for multi-carrier communication systems with adaptive transmission and feedback

  • US 10,075,941 B2
  • Filed: 03/28/2016
  • Issued: 09/11/2018
  • Est. Priority Date: 01/29/2004
  • Status: Active Grant
First Claim
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1. A link adaptation method by a base station serving a plurality of mobile stations in an Orthogonal Frequency Division Multiplexing (OFDM) communication system, the communication system utilizing a transmission structure with time slots in the time domain and frequency subchannels in the frequency domain, the method comprising:

  • transmitting a control message to a mobile station over a control channel,wherein;

    the control message contains transmission parameters allocated to the mobile station for a subsequent transmission of data by the base station over a frequency subchannel to the mobile station in a time slot; and

    the mobile station-specific transmission parameters indicate an antenna transmission scheme and a corresponding subchannel configuration, the antenna transmission scheme comprising a transmission diversity scheme or a multiple-input multiple-output (MIMO) scheme and the corresponding subchannel configuration characterized by distributed subcarriers or localized subcarriers in the frequency domain; and

    transmitting a data packet to the mobile station over the frequency subchannel in accordance with the mobile station-specific transmission parameters.

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