COMMUNICATION APPARATUS AND COMMUNICATION METHOD
First Claim
Patent Images
1. A communication apparatus comprising:
- an evaluation value processing unit configured to calculate, upon receipt of known signals from a plurality of communication devices including a communication partner device, an evaluation value indicative of a characteristic of a transmission path based on the known signals from said plurality of communication devices; and
a transmission scheme setting unit configured to set, based on said evaluation value, one of adaptive array transmission that achieves both null steering and beamforming and beamforming dedicated transmission as a transmission scheme to the communication partner device.
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Abstract
Upon receipt of sounding signals from a plurality of communication devices including a communication partner device, an evaluation value processing unit calculates an evaluation value indicative of a characteristic of a transmission path based on the sounding signals from the plurality of communication devices. A transmission scheme setting unit sets, based on the evaluation value, adaptive array transmission that achieves both null steering and beamforming or beamforming dedicated transmission as a transmission scheme to the communication partner device.
11 Citations
18 Claims
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1. A communication apparatus comprising:
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an evaluation value processing unit configured to calculate, upon receipt of known signals from a plurality of communication devices including a communication partner device, an evaluation value indicative of a characteristic of a transmission path based on the known signals from said plurality of communication devices; and a transmission scheme setting unit configured to set, based on said evaluation value, one of adaptive array transmission that achieves both null steering and beamforming and beamforming dedicated transmission as a transmission scheme to the communication partner device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A communication apparatus comprising:
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an evaluation value processing unit configured to calculate first communication quality when an evaluation signal from a communication partner device is not subjected to adaptive array reception processing and second communication quality when the evaluation signal from the communication partner device is subjected to adaptive array reception processing, and a transmission scheme setting unit configured to, if a difference between said first communication quality and said second communication quality exceeds a predetermined threshold, set adaptive array transmission that achieves both null steering and beamforming as a transmission scheme to said communication partner device, and if the difference is less than or equal to the predetermined threshold, set beamforming dedicated transmission as the transmission scheme to said communication partner device. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A communication method comprising the steps of:
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upon receipt of known signals from a plurality of communication devices including a communication partner device, calculating an evaluation value indicative of a characteristic of a transmission path based on the known signals from said plurality of communication devices; and setting, based on said evaluation value, one of adaptive array transmission that achieves both null steering and beamforming and beamforming dedicated transmission as a transmission scheme to the communication partner device.
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Specification