A method is provided of coordinating adjacent first and second wireless networks, comprising: receiving a signal at a controller on a wireless device, the received signal indicating an intended transmission state of the first network during a future time slot, the intended transmission state indicating whether or not the first network intends to transmit first data during the future time slot; transmitting second data in the second network to a remote device if the intended transmission state indicates that the first network does not intend to transmit first data during the future time slot; and controlling transmission of the second data in the second network such that the transmission ends during the future time slot in which the first network does not intend to transmit first data, with sufficient time remaining to allow the second network to receive a reply transmission from the remote device.