Quiet interval termination

1. An access point (AP) comprising:

a processor; and

a memory storing instructions that, when executed by the processor, cause the AP to:

transmit a first frame comprising:

a target wake time (TWT) element indicating a restricted target wake time (r-TWT) service period (SP) of an r-TWT setup for one or more first stations (STAs); and

a quiet element indicating a quiet interval, overlapping with the r-TWT SP, for one or more second STAs;

transmit, during the r-TWT SP, a quality of service (QoS) data or null frame with an end of service period (EOSP) field set to 1; and

transmit, to the one or more second STAs and during the quiet interval, a contention free-end (CF-end) frame indicating termination of the quiet interval.

2. The AP of claim 1 , wherein the quiet element comprises a quiet duration field indicating a duration of the quiet interval.

3. The AP of claim 1 , wherein the quiet element comprises a quiet period field indicating a number of beacon intervals between start times of scheduled quiet intervals defined by the quiet element.

4. The AP of claim 1 , wherein the quiet element comprises:

a quiet count field indicating a number of target beacon transmission times (TBTTs) until a beacon interval during which a next quiet interval starts; and

a quiet offset field indicating an offset of a start time of the quiet interval from a TBTT specified by the quiet count field.

5. The AP of claim 1 , wherein the first frame comprises a beacon frame or a probe response frame.

6. A station (STA) comprising:

a processor; and

a memory storing instructions that, when executed by the processor, cause the STA to:

receive, from an access point (AP), a first frame comprising:

a target wake time (TWT) element indicating a restricted target wake time (r-TWT) service period (SP) of an r-TWT setup for one or more first station (STAs); and

a quiet element indicating a quiet interval overlapping with a portion of the r-TWT SP;

receive, from the AP, during the quiet interval, a contention free-end (CF-end) frame indicating termination of the quiet interval; and

terminate the quiet interval in response to the CF-end frame:,

wherein the instructions, when executed by the processor, further cause the STA, when the STA supports r-TWT operation, to:

receive, from the AP and during the r-TWT SP, a quality of service (QoS) data or null frame with an end of service period (EOSP) field set to 1; and

transmit, to the AP and during the quiet interval, a second frame.

7. The STA of claim 6 , wherein the quiet element comprises a quiet duration field indicating a duration of the quiet interval.

8. The STA of claim 6 , wherein the quiet element comprises a quiet period field indicating a number of beacon intervals between start times of scheduled quiet intervals defined by the quiet element.

9. The STA of claim 6 , wherein the quiet element comprises:

a quiet count field indicating a number of target beacon transmission times (TBTTs) until a beacon interval during which a next quiet interval starts; and

a quiet offset field indicating an offset of a start time of the quiet interval from a TBTT specified by the quiet count field.

10. The STA of claim 6 , wherein the instructions, when executed by the processor, further cause the STA to set a network allocation vector (NAV) based on a length of the quiet interval.

11. The STA of claim 10 , wherein the instructions, when executed by the processor, further cause the STA to reset the NAV based on receiving the CF-end frame from the AP.

12. The STA of claim 6 , wherein the first frame comprises a beacon frame or a probe response frame.

13. The STA of claim 6 , wherein the instructions, when executed by the processor, further cause the STA to transmit a third frame to the AP after receiving the CF-end frame.

14. The STA of claim 13 , wherein the STA transmits the third frame using enhanced distributed channel access (EDCA).

15. A non-transitory computer-readable medium comprising instructions that, when executed by a processor of an access point (AP), cause the AP to:

transmit a first frame comprising:

a target wake time (TWT) element indicating a restricted target wake time (r-TWT) service period (SP) of an r-TWT setup for one or more first stations (STAs); and

a quiet element indicating a quiet interval, overlapping with the r-TWT SP, for one or more second STAs;

transmit, during the r-TWT SP, a quality of service (QoS) data or null frame with an end of service period (EOSP) field set to 1; and

transmit, to the one or more second STAs and during the quiet interval, a contention free-end (CF-end) frame indicating termination of the quiet interval.

16. The AP of claim 1 , wherein the instructions, when executed by the processor, further cause the AP to receive, from a STA of the one or more second STAs and during the quiet interval, a second frame, wherein the STA supports r-TWT operation.

17. An access point (AP) comprising:

a processor; and

a memory storing instructions that, when executed by the processor, cause the AP to:

transmit a first frame comprising:

a target wake time (TWT) element indicating a restricted target wake time (r-TWT) service period (SP) of an r-TWT setup for one or more first stations (STAs); and

a quiet element indicating a quiet interval, overlapping with the r-TWT SP, for one or more second STAs; and

transmit, to the one or more second STAs and during the quiet interval, a contention free-end (CF-end) frame indicating termination of the quiet interval, wherein the instructions, when executed by the processor, further cause the AP to:

transmit, during the r-TWT SP, a second frame to a STA of the one or more first STAs; or

receive, during the r-TWT SP, a third frame from a STA of the one or more first STAs.

18. The non-transitory computer-readable medium of claim 15 , wherein the instructions, when executed by the processor, further cause the AP to:

receive, from a STA of the one or more second STAs and during the quiet interval, a second frame, wherein the STA supports r-TWT operation.