Receive operation mode indication for power save
Embodiments described herein relate to a system and method for providing flexible receiver configuration in wireless communication systems, such as 802.11 WLAN systems. In one embodiment, a wireless device may transmit a first data frame including first configuration information specifying a first configuration of the receiver to notify a remote device that the wireless device intends to configure its receiver according to the first configuration. After receiving an acknowledgement frame confirming the first configuration information, the wireless device may configure the receiver according to the first configuration. In another embodiment, a wireless device may receive a first data frame including first configuration information and further including a request that the wireless device configure its receiver according to the first configuration. In response, the wireless device may configure the receiver according to the first configuration. In either case, the wireless device may receive subsequent communications according to the first configuration.
1. A method of managing a wireless communication mode of a wireless device, the method comprising:
receiving a first frame from a remote device, the first frame comprising first configuration information specifying a first configuration of a receiver of the remote device;
transmitting to the remote device an acknowledgement frame according to a second format that is receivable by the remote device when the receiver of the remote device is configured according to a second configuration; and
transmitting to the remote device, subsequent to transmitting the acknowledgement frame, a second frame according to a first format that is receivable by the remote device when the receiver of the remote device is configured according to the first configuration.
2. The method of claim 1 , wherein the first configuration information comprises at least one of an indication of a channel width associated with the receiver of the remote device or an indication of a number of active receive spatial streams associated with the receiver of the remote device.
3. The method of claim 1 , wherein the first configuration information is comprised in a header of the first frame, and wherein a header of the acknowledgement frame comprises a confirmation of the first configuration information.
4. The method of claim 3 , wherein the header of the first frame and the header of the acknowledgement frame comprise media access control (MAC) headers.
5. The method of claim 1 , wherein the second frame comprises second configuration information specifying a third configuration of the receiver of the remote device, the method further comprising:
receiving a second acknowledgement frame acknowledging the second configuration information; and
transmitting, to the remote device, a third frame according to a third format that is receivable by the remote device when the receiver of the remote device is configured according to the third configuration.
6. The method of claim 5 , wherein the first configuration information and the second configuration information each comprise at least one of an indication of a receiver channel width or an indication of a number of active receive spatial streams associated with the receiver of the remote device.
7. The method of claim 6 ,
wherein the first frame further comprises an indication that the first configuration information comprises a notice from the remote device that the receiver of the remote device will be configured according to the first configuration; and
wherein the second frame further comprises an indication that the second configuration information comprises a request from the wireless device that the receiver of the remote device be configured according to the third configuration.
8. A apparatus comprising:
a memory storing program instructions; and
a processing element configured to execute the program instructions to:
receive a first frame from a remote device, the first frame comprising first configuration information specifying a first configuration of a receiver of the remote device;
provide for transmission to the remote device an acknowledgement frame according to a format that is receivable by the remote device when the receiver of the remote device is configured according to a second configuration; and
provide for transmission to the remote device, subsequent to transmitting the acknowledgement frame, a second frame according to a first format that is receivable by the remote device when the receiver of the remote device is configured according to the first configuration.
9. The apparatus of claim 8 , wherein the first configuration information comprises at least one of an indication of a channel width associated with the receiver of the remote device or an indication of a number of active receive spatial streams associated with the receiver of the remote device.
10. The apparatus of claim 8 , wherein the first configuration information is comprised in a header of the first frame, and wherein a header of the acknowledgement frame comprises a confirmation of the first configuration information.
11. The apparatus of claim 10 , wherein the header of the first frame and the header of the acknowledgement frame comprise media access control (MAC) headers.
12. The apparatus of claim 8 , wherein the second frame comprises second configuration information specifying a third configuration of the receiver of the remote device, wherein the processing element is configured to:
receive a second acknowledgement frame acknowledging the second configuration information; and
provide for transmission, to the remote device, a third frame according to a third format that is receivable by the remote device when the receiver of the remote device is configured according to the third configuration.
13. The apparatus of claim 12 , wherein the first configuration information and the second configuration information each comprise at least one of an indication of a receiver channel width or an indication of a number of active receive spatial streams associated with the receiver of the remote device.
14. A method for reconfiguring a receiver of a wireless device, the method comprising:
transmitting a first frame comprising first configuration information specifying a first receiver configuration;
receiving an acknowledgement frame associated with a second receiver configuration;
configuring the receiver according to the first receiver configuration in response to the acknowledgement frame; and
receiving a second frame according to the first receiver configuration after configuring the receiver according to the first receiver configuration.
15. The method of claim 14 , wherein the first configuration information comprises at least one of an indication of a channel width associated with the receiver or an indication of a number of active receive spatial streams associated with the receiver.
16. The method of claim 14 , wherein the first configuration information is comprised in a header of the first frame, and wherein the first configuration information is acknowledged in a header of the acknowledgement frame.
17. The method of claim 16 , wherein the header of the first frame and the header of the acknowledgement frame comprise media access control (MAC) headers.
18. The method of claim 14 , wherein the second frame comprises second receiver configuration information specifying a third receiver configuration, the method further comprising:
transmitting a second acknowledgement frame acknowledging the second configuration information;
configuring the receiver according to the third configuration; and
receiving a third frame according to the third receiver configuration, after configuring the receiver according to the third receiver configuration.
19. The method of claim 18 , wherein the first configuration information and the second configuration information each comprise at least one of an indication of a channel width associated with the receiver or an indication of a number of active receive spatial streams associated with the receiver.
20. The method of claim 18 ,
wherein the first frame further comprises an indication that the first configuration information comprises a notice from the wireless device that the receiver will be configured according to the first receiver configuration; and
wherein the second frame further comprises an indication that the second configuration information comprises a request from a sender of the second frame that the receiver be configured according to the third receiver configuration.