Quiet interval termination
An access point (AP) transmits 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 for one or more second STAs, the quiet interval overlapping with a portion of the r-TWT SP. Based on determining termination of the r-TWT SP during the quiet interval, the AP transmits a second frame, during the quiet interval, indicating termination of the quiet interval for the one or more second STAs.
1. A method comprising:
transmitting, by 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 stations (STAs); and
a quiet element indicating a quiet interval, overlapping with the r-TWT SP, for one or more second STAs;
transmitting, during the r-TWT SP, a quality of service (QOS) data or null frame with an end of service period (EOSP) field set to a first value; and
transmitting, during the quiet interval, a contention free-end (CF-end) frame indicating termination of the quiet interval.
2. The method of claim 1 , wherein the quiet element comprises a quiet duration field indicating a duration of the quiet interval.
3. The method 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 method 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 method of claim 1 , wherein the first frame comprises a beacon frame or a probe response frame.
6. The method of claim 1 , further comprising receiving, from a STA of the one or more second STAs and during the quiet interval, a second frame.
7. The method of claim 6 , wherein the STA supports r-TWT operation.
8. A method comprising:
receiving, by a station (STA), 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 stations (STAs); and
a quiet element indicating a quiet interval overlapping with a portion of the r-TWT SP;
setting, by the STA, a network allocation vector (NAV) based on a length of the quiet interval;
receiving, by the STA from the AP, during the quiet interval, a contention free-end (CF-end) frame indicating termination of the quiet interval; and
resetting the NAV in response to the CF-end frame.
9. The method of claim 8 , further comprising:
receiving, 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 a first value; and
transmitting, to the AP and during the quiet interval, a second frame.
10. The method of claim 8 , wherein the quiet element comprises a quiet duration field indicating a duration of the quiet interval.
11. The method of claim 8 , 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.
12. The method of claim 8 , 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.
13. The method of claim 8 , wherein the first frame comprises a beacon frame or a probe response frame.
14. The method of claim 8 , further comprising transmitting, to the AP and after receiving the CF-end frame, a second frame.
15. A non-transitory computer-readable medium comprising instructions that, when executed by a processor of a station (STA), 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 stations (STAs); and
a quiet element indicating a quiet interval overlapping with a portion of the r-TWT SP;
set, a network allocation vector (NAV) based on a length of the quiet interval;
receive, from the AP, during the quiet interval, a contention free-end (CF-end) frame indicating termination of the quiet interval; and
reset the NAV in response to the CF-end frame.
16. The non-transitory computer-readable medium of claim 15 , wherein the instructions, when executed by the processor, further cause the STA 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 a first value; and
transmit, to the AP and during the quiet interval, a second frame.
17. The non-transitory computer-readable medium of claim 15 , wherein the quiet element comprises a quiet duration field indicating a duration of the quiet interval.
18. The non-transitory computer-readable medium of claim 15 , 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.
19. The non-transitory computer-readable medium of claim 15 , 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.
20. The non-transitory computer-readable medium of claim 15 , wherein the first frame comprises a beacon frame or a probe response frame.