Communication apparatus, communication method, and communication system
First Claim
Patent Images
1. A communication apparatus comprising:
- a physical frame construction device configured to construct a physical frame which includes a plurality of medium access control frames;
a first setting device configured, with respect to the physical frame constructed by the physical frame construction device, to set virtual carrier sense information in said plurality of medium access control frames so that a result of the carrier sense is identical to another by a virtual carrier sense based on the plurality of medium access control frames; and
a transmission device configured to transmit a physical frame in which virtual carrier sense information has been set by the first setting device to a destined 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
21 Claims
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1. A communication apparatus comprising:
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a physical frame construction device configured to construct a physical frame which includes a plurality of medium access control frames; a first setting device configured, with respect to the physical frame constructed by the physical frame construction device, to set virtual carrier sense information in said plurality of medium access control frames so that a result of the carrier sense is identical to another by a virtual carrier sense based on the plurality of medium access control frames; and a transmission device configured to transmit a physical frame in which virtual carrier sense information has been set by the first setting device to a destined communication apparatus. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A communication method comprising:
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constructing a physical frame having a plurality of medium access control frames; with respect to the physical frame, setting virtual carrier sense information in said plurality of medium access control frame so that a result of the carrier sense is identical to another by a virtual carrier sense based on the plurality of medium access control frames; and transmitting a physical frame in which virtual carrier sense information has been set by the setting to a destined communication apparatus. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A communication system having a first communication apparatus which corresponds to a transmission source, a second communication apparatus which corresponds to a destination;
- a third communication apparatus which does not come under the destination, and a communication medium to which the communication apparatuses are connectable, wherein
the first communication apparatus comprises; a physical frame construction device configured to construct a physical frame having a plurality of medium access control frames; a first setting device configured, with respect to the physical frame constructing by the physical frame construction device, to set virtual carrier sense information in said plurality of medium access control frames so that a result of the carrier sense is identical to another by a virtual carrier sense based on the plurality of medium access control frames; and a transmission device configured to transmit a physical frame in which the virtual carrier sense information has been set by the first setting device to the second communication apparatus, the second communication apparatus comprises; a receiving device configured to receive the physical frame transmitted from the first communication apparatus; an acquisition device configured to acquire virtual carrier sense information from at least one medium access control frame of the plurality of medium access control frames of the physical frame received by the receiving device; and a device configured to specify a duration in which the communication medium can be occupied, based on the virtual carrier sense information acquired by the acquisition device, and the third communication apparatus comprises; a receiving device configured to receive the physical frame transmitted to the second communication apparatus; an acquisition device configured to acquire virtual carrier sense information from at least one medium access control frame of the plurality of medium access control frames of the physical frame received by the receiving device; and a device configured to specify a duration in which the communication medium is virtually occupied, based on the virtual carrier sense information acquired by the acquisition device, and to wait for transmission of a frame onto the communication medium in the duration. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
- a third communication apparatus which does not come under the destination, and a communication medium to which the communication apparatuses are connectable, wherein
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21. A communication system having a first communication apparatus which corresponds to a transmission source, a second communication apparatus which corresponds to a destination;
- a third communication apparatus which does not come under the destination, and a communication medium to which the communication apparatuses are connectable, wherein
the first communication apparatus comprises; a physical frame construction device configured to construct a physical frame having a plurality of medium access control frames, the medium access control frames including duration fields; a setting device configured to set a same value to each of the duration fields of the plurality of medium access control frames; and a transmission device configured to transmit the physical frame in which the value has been set to each of the duration fields of the medium access control frames, the second communication apparatus comprises; a receiving device configured to receive the physical frame transmitted from the communication apparatus; an acquisition device configured to acquire the value from at least one medium access control frame of the plurality of medium access control frames of the physical frame received by the receiving device; and a device configured to specify a duration in which the communication medium can be occupied, based on the value, and the third communication apparatus comprises; a receiving device configured to receive the physical frame transmitted to the second communication apparatus; an acquisition device configured to acquire the value from at least one medium access control frame of the plurality of medium access control frames of the physical frame received by the receiving device; and a device configured to specify a duration in which the communication medium is virtually occupied, based on the value, and to wait for transmission of a frame onto the communication medium in the duration.
- a third communication apparatus which does not come under the destination, and a communication medium to which the communication apparatuses are connectable, wherein
Specification