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Communication apparatus, communication method, and communication system

  • US 8,472,468 B2
  • Filed: 05/26/2010
  • Issued: 06/25/2013
  • Est. Priority Date: 01/09/2004
  • Status: Active Grant
First Claim
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1. A communication circuit used as a component in a communication apparatus, comprising:

  • a physical frame construction device configured to construct a single physical frame containing a physical header, length information, a first check sequence, and a plurality of MAC frames, the length information representing lengths of the plurality of MAC frames, the first check sequence being for detecting an error which may occur in the length information, each of the plurality of MAC frames including a second check sequence for detecting an error which may occur in each of the plurality of MAC frames; and

    a transmission device configured to transmit the physical frame to a destination communication apparatus,wherein the physical header includes a first header for a first protocol and a second header for a second protocol, the second header following the first header;

    the first header is decodable by a first communication apparatus that supports the first protocol and a second communication apparatus that supports the second protocol; and

    the second header is decodable by the second communication apparatus.

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