Method and system for no buffered traffic indication for wireless local area network (WLAN) power save
Aspects in a method and system for no buffered traffic indication for wireless local area network (WLAN) power save may enable a peer communication device to determine a time duration for remaining in an active operating state based on communication with other peer communication devices. In one aspect, a given peer communication device may determine that it has no data to communicate to any of the remaining peer communication devices. The given communication device may communicate to each of the peer communication devices that there is no data to transmit to the peer communication device. Each of the peer communication devices may communicate that there is no data to transmit to the given peer communication device. Based on the communications, the given peer communication device may exit the active operating state and enter a low power operating state.
1. A method for power control, the method comprising:
establishing a peer relationship with one or more peer communication devices based on establishing an association with a distinct coordinating communication device;
entering into a low-power operating state;
waking up and determining that there is no buffered data to transmit to said one or more peer communication devices;
transmitting a no-data indication message to each of said one or more peer communication devices while operating in an active operating state;
receiving an acknowledgment message from said each of said one or more peer communication devices based on said transmitted no-data indication messages; and
upon determining that each of the received acknowledgment messages has a no-data indication, entering the low power operating state.
2. The method according to claim 1 , further comprising remaining in the active operating state upon determining that at least one of said one or more peer communication devices has data to transmit.
3. The method according to claim 2 , comprising remaining in said active operating state based on determining that at least one of the received acknowledgment messages not having a no-data indication.
4. The method according to claim 1 , comprising determining that none of said one or more peer communication devices has data to transmit based on each of said received acknowledgment messages having a no-data indication.
5. The method according to claim 4 , comprising entering said low power operating state based on said determining that none of said one or more peer communications devices has data to transmit.
6. A system for power control, the system comprising:
one or more circuits that enable establishment of a peer relationship with one or more peer communication devices based on establishment of an association with a distinct coordinating communication device;
said one or more circuits operable to:
enter into a low-power operating state;
wake up and determine that there is no buffered data to transmit to any of said one or more peer communication devices; and
enable transmission of a no-data indication message to each of said one or more peer communication devices while operating in an active operating state;
said one or more circuits enable reception of an acknowledgment message from said each of said one or more peer communication devices based on said transmitted no-data indication messages, each of the received acknowledgment messages indicating whether a corresponding peer communication device has data to transmit; and
said one or more circuits enable entry into the low-power operating state upon determining that none of the one or more peer communication devices has data to transmit.
7. The system according to claim 6 , wherein said one or more circuits enable determining that there is no data to transmit to said one or more peer communication devices.
8. The system according to claim 7 , wherein said one or more circuits enable generation of said no-data indication messages based on said determining that there is no data to transmit to said one or more peer communication devices.
9. The system according to claim 6 , wherein said one or more circuits enable remaining in the active operating state upon determining that at least one of said one or more peer communication devices has data to transmit based on content of said received acknowledgment messages.
10. The system according to claim 6 , wherein said one or more circuits enable remaining in said active operating state upon determining that at least one of said one or more peer communication devices has data to transmit.
11. The system according to claim 6 , wherein said one or more circuits enable entering said low power operating state based on each of said received acknowledgment messages including a no-data indication.
12. A system for power control, comprising:
a wireless transceiver configured to communicate with a base station and with one or more peer communication devices;
wherein the wireless transceiver is operable to:
enter into a low-power operating state for a specified period;
wake up and determine that there is no buffered data to transmit to any of said one or more peer communication devices; and
transmit a no-data indication message to each of said one or more peer communication devices while operating in an active operating state;
wherein the wireless transceiver is operable to receive and process an acknowledgment message including a no-data indication from said each of the one or more peer communication devices based on the transmitted no-data indication messages; and
wherein the wireless transceiver is operable to determine to enter the low power operating state based on receiving the acknowledgment messages with the included no-data indications.
13. The system according to claim 12 , wherein the wireless transceiver is operable to determine that there is no data to transmit to the one or more peer communication devices.
14. The system according to claim 12 , wherein the wireless transceiver is operable, in the active operating state, to transmit the no-data indication message to each of said one or more peer communication devices regardless of whether it had been transmitting data or messages.
15. The system according to claim 12 , wherein the wireless transceiver is operable to determine that at least one of the one or more peer communication devices has data to transmit based upon a lack of a no-data indication in at least one of the received acknowledgment messages.
16. The system according to claim 12 , wherein the wireless transceiver is operable to determine to not transition to the low power operating state based upon a lack of a no-data indication in at least one of the received acknowledgment messages.
17. The system according to claim 12 , wherein the wireless transceiver is operable to determine to transition to the low power operating state based on content of at least one of the received acknowledgment messages including a no-data indication.
18. The system according to claim 12 , wherein the wireless transceiver is operable to enter the low power operating state for a limited duration and, upon exiting the low power operating state after the limited duration, to subsequently transmit another no-data indication message to each of said one or more peer communication devices upon determining that there is no buffered data to transmit to any of said one or more peer communication devices.
19. The method of claim 1 , wherein the method for power control supports a wireless personal area network.
20. The system of claim 12 , wherein the system for power control supports a wireless personal area network.