Transmission method, transmission device, and communication system
AssigneePanasonic Intellectual Property Corporation of America
InventorsYutaka Murakami, Tomohiro Kimura, Mikihiro Ouchi
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Abstract
An indicator in a master AP from among a plurality of APs obtains communication quality of communication with an AP which is a communication partner. In the case where the obtained communication quality is less than a threshold, the indicator causes the plurality of APs including the master AP to perform cooperative operation to transmit data. In the case where the obtained communication quality is not less than the threshold, the indicator causes the plurality of APs including the master AP to stop the cooperative operation.
Claims19
A transmission system, comprising:
- a first transmitter and a second transmitter that are each configured to perform unicast of transmission data to a reception device, the unicast including a first unicast mode and a second unicast mode, the first transmitter and the second transmitter being each configured to switch between the first unicast mode and the second unicast mode regardless of a position of the reception device,
- wherein, in the first unicast mode,
- the first transmitter transmits a first signal to the reception device;
- the second transmitter transmits a second signal to the reception device;
- the first signal and the second signal carry the same data;
- and
- the first signal and the second signal are transmitted simultaneously at the same frequency, and
- wherein, in the second unicast mode,
- the second transmitter does not unicast to the reception device;
- and
- the first transmitter transmits a third signal to the reception device.
A transmission method used in a transmission system including a first transmitter and a second transmitter that perform unicast of transmission data to a reception device, the unicast including a first unicast mode and a second unicast mode, the transmission method comprising:
- switching between the first unicast mode and the second unicast mode regardless of a position of the reception device;
- in the first unicast mode,
- transmitting, by the first transmitter, a first signal to the reception device;
- transmitting, by the second transmitter, a second signal to the reception device;
- and
- changing the first unicast mode to the second unicast mode;
- in the second unicast mode,
- controlling the second transmitter not to unicast to the reception device;
- transmitting, by the first transmitter, a third signal to the reception device, and
- changing the second unicast mode to the first unicast mode,
- wherein, in the first unicast mode,
- the first signal and the second signal carry the same data;
- and
- the first signal and the second signal are transmitted simultaneously at the same frequency.
A transmission system comprising:
- a first access point (AP);
- a second AP;
- and
- a control circuit configured to control the first AP and the second AP, regardless of a position of a reception device, to unicast such that:
- in a first period, the first AP and the second AP unicast first data and second data to the reception device simultaneously at a first frequency channel, respectively, the first data being same as the second data;
- and
- in a second period, the first AP unicasts third data to the reception device and the second AP does not unicast to the reception device.
Dependencies are inferred from the claim text.