Sony patents Wi-Fi method to reduce interference between nearby routers

1. A first communication device configured to communicate with one or more third communication devices, the first communication device comprising circuitry configured to: transmit first configuration information including first beamforming configuration information and first time information indicating duration of an intended transmission of one or more data units, to which the first configuration information applies to the one or more third communication devices, from the first communication device to the one or more third communication devices and the first configuration information further including the maximum duration of simultaneous transmissions of data units by the first communication device and a second communication device that is configured to communicate with one or more fourth communication devices; listen for reception of second configuration information from the second communication device, the second configuration information including second beamforming configuration information and second time information indicating the duration of the intended transmission of one or more data units, to which the second configuration information applies to the one or more fourth communication devices, to the one or more fourth communication devices; and communicate with the one or more third communication devices using the first configuration information and, if received, considering the second configuration information using coordinated beamforming, wherein the first communication device transmits a first data unit, comprising a preamble and a payload, to a third communication device of the one or more third communication devices, wherein beamforming weights are used for transmitting both the preamble and the payload of the first data unit that reduce or minimize interference towards a fourth communication device of the one or more fourth communication devices.