Techniques for conserving power for communication between wireless devices

摘要

Embodiments herein relate to various techniques for conserving power for communication between wireless devices. Example techniques described herein may achieve power conservation by synchronizing when devices in communication with one another may enter power save or sleep mode and subsequently when the devices may wake up from power save mode to resume communication. According to one technique, a sending device may establish a rendezvous time in a duration field of a control frame (e.g., an RTS frame), which may indicate a time at which the devices may awake from power save mode. According to another technique, a duration may be indicated in a duration field of one or more data frames, and a rendezvous offset may be indicated in a Quality of Service (QoS) control field of the one or more data frames. Such a duration and rendezvous offset may be used to establish a rendezvous time in this technique.

主权项

1. A device comprising:
a modulator; a demodulator; and at least one processor, wherein the at least one processor is configured to:
receive, from a sending device, a request a first control frame, to establish a transmit opportunity (TXOP) with the device, wherein a duration field associated with the first control frame comprises a rendezvous time at which the device and the sending device will wake up from respective power save modes;send a second control frame, the second control frame indicating to the sending device that a TXOP has been established;receive, from the sending device, one or more data frames;receive, from the sending device, a contention-free (CF)-end frame, wherein the CF-end frame terminates the TXOP; andin response to receiving the CF-end frame, enter power save mode until the rendezvous time is reached.