Communication apparatus, communication method, and communication system
First Claim
Patent Images
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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Abstract
A physical frame is constructed, the physical frame including a medium access control super-frame payload which in turn includes a plurality of medium access control frames. With respect to the constructed physical frame, virtual carrier sense information is set in the plurality of medium access control frame so that a result of carrier sense is identical to another by virtual carrier sense based on the plurality of medium access control frames in the medium access control super-frame payload. The physical frame in which the virtual carrier sense information has been set is transmitted to a destined communication apparatus.
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Citations
27 Claims
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1. A communication circuit used as a component in a communication apparatus, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 18, 19, 20, 21, 22)
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8. A communication circuit used as a component in a communication apparatus, comprising:
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a physical frame reception device configured to receive 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; a generation device configured to generate an acknowledgement frame in which MAC frames of the received physical frame are specified to have been received correctly, if no error has been detected on the length information according to the first check sequence and no error has been detected on each of the MAC frames according to the second check sequence corresponding thereto; and a transmission device configured to transmit the acknowledgement frame as a response to reception of at least one of a plurality of the MAC frames in the physical frame, after the physical frame is received and a Short IFS (SIFS) period elapses, 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. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 23, 24, 25, 26, 27)
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Specification