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US 10,097,249 B2Granted
Wireless communication apparatus, wireless communication system, and wireless communication method
AssigneeKabushiki Kaisha Toshiba
InventorKoji Horisaki
Life of this patent
Estimating the term…
Abstract
A wireless communication apparatus includes a plurality of antennas, and a controller configured to cause a multicast frame including distribution data and a return request to be transmitted from the antennas, and the multicast frame to be re-transmitted when the antennas receive one or more return frames as a response to the multicast frame and an intensity of the return frames meets a predetermined condition.
Claims17
A wireless communication device, comprising:
- a plurality of antennas;
- and
- a controller configured to
- cause a multicast frame including distribution data and a return request to be transmitted from the antennas, and the multicast frame to be re-transmitted when the antennas receive return frames as a response to the multicast frame and an intensity of the return frames meets a predetermined condition, and
- cause a unicast frame including the distribution data, the return request and an address of a single target receiving device, to be transmitted to the single target receiving device, when the antennas receive the return frames and the intensity of the return frames does not meet the predetermined condition.
2 more elements
A wireless communication system, comprising:
- a wireless communication device that transmits a multicast frame and a unicast frame;
- and
- a plurality of wireless communication receiving devices, wherein
- the wireless communication device includes:
- a plurality of antennas;
- and
- a controller configured to
- cause the multicast frame, which includes distribution data and a return request, to be transmitted from the antennas, and the multicast frame to be re-transmitted when the antennas receive return frames from the wireless communication receiving devices as a response to the multicast frame and an intensity of the return frames meets a predetermined condition, and
- cause the unicast frame including the distribution data, the return request and an address of a single target receiving device, to be transmitted to the single target receiving device, when the antennas receive the return frames and the intensity of the return frames does not meet the predetermined condition.
6 more elements
A method for wirelessly distributing data from a wireless communication device to a plurality of receiving devices, comprising:
- transmitting a multicast frame including distribution data and a return request to the plurality of receiving devices;
- when a predetermined amount of time has elapsed from the transmission of the multicast frame, determining an intensity of one or more return frames received from the receiving devices as a response to the multicast frame;
- when the intensity of the return frames meets a predetermined condition, re-transmitting the multicast frame to the plurality of receiving devices;
- and
- when the intensity of the return frames does not meet the predetermined condition, transmitting a unicast frame including the distribution data, the return request and an address of a single target receiving device to each of one or more receiving devices that returned a negative acknowledgement within the return frame.
2 more elements
Dependencies are inferred from the claim text.