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Multi-rate overlay mode in wireless communication systems

  • US 9,806,977 B2
  • Filed: 02/12/2016
  • Issued: 10/31/2017
  • Est. Priority Date: 11/04/2015
  • Status: Active Grant
First Claim
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1. A method for frame-based communication processing performed by a first wireless communication device, the first wireless communication device configured with a legacy wireless communication protocol (legacy protocol) and a multiple data rate (multi-rate) extension mechanism to the legacy protocol, the method comprising:

  • identifying a data transfer rate associated with a second wireless communication device, whereinthe data transfer rate is identified from a group comprising a legacy data transfer rate specified by the legacy protocol and a plurality of non-legacy data transfer rates specified by the multi-rate extension mechanism,the legacy data transfer rate is achieved by a legacy modulation scheme specified by the legacy protocol,each of the plurality of non-legacy data transfer rates are achieved by a respective one of a plurality of non-legacy modulation schemes specified by the multi-rate extension mechanism, andeach of the plurality of non-legacy data transfer rates are different than the legacy data transfer rate;

    in response to an identification of a selected non-legacy data transfer rate associated with the second wireless communication device, identifying a selected non-legacy modulation scheme associated with the selected non-legacy data transfer rate;

    performing modulation of a data payload according to the selected non-legacy modulation scheme to produce a modulated data payload;

    forming a non-legacy header structure comprising a non-legacy start-of-frame delimiter (SFD) and an identifier of the selected non-legacy modulation scheme;

    performing modulation of the non-legacy header structure according to the legacy modulation scheme to produce a modulated non-legacy header structure; and

    assembling the modulated non-legacy header structure and the modulated data payload into a non-legacy frame having a structure that is different from a legacy frame structure specified by the legacy protocol.

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