A communication protocol in a wireless network of a transceiver and a plurality of devices, in which at least one device is a bidirectional device, and in which one or more other devices can be unidirectional devices. The unidirectional device communicates with the transceiver in a unidirectional mode from the device to the transceiver and the bidirectional device communicates with the transceiver either in a bidirectional mode or in an unidirectional mode from the device to the transceiver. The communication protocol is configured to determine which transmission mode is to be used for each device. Various techniques are provided in order to optimize the time and energy spent to transmit information from one peer to the other.