Wireless local area network supporting multiple slot times
First Claim
1. A method for operating a Basic Service Set (BSS)/Independent Basic Service Set (IBSS) of a Wireless Local Area Network (WLAN) that services a plurality of WLAN devices (STAs), wherein at least one STA of the plurality of STAs supports multiple slot times, the method comprising:
- initiating operation of the BSS/IBSS of the WLAN using a short slot time;
determining that operation of the BSS/IBSS requires use of a long slot time, wherein the long slot time is longer than the short slot time; and
altering operation of at least one of the plurality of STAs to be consistent with the long slot time by;
using the long slot time;
setting a local Long Slot Termination Time (LSTT);
when a Target Beacon Transition Time (TBTT) is before the local LSTT, transmitting a beacon that indicates that the long slot time is to be used and that includes the local LSTT; and
when the TBTT is after the local LSTT, transmitting a beacon that indicates that the short slot time is to be used.
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Accused Products
Abstract
A Wireless Local Area Network (WLAN) supports multiple slot times. A Basic Service Set (BSS)/Independent Basic Service Set (IBSS) of the WLAN services a plurality of WLAN devices (STAs) and at least one STA of the plurality of STAs supports multiple slot times. Operation is initiated using a short slot time. Then, the a determination is made that operation of the BSS/IBSS requires use of a long slot time, wherein the long slot time is longer than the short slot time. Operation of at least one of the plurality of STAs is modified to be consistent with the long slot time. In altering the operation the STA sets a local Long Slot Termination Time (LSTT). When a Target Beacon Transition Time (TBTT) is before the local LSTT, a beacon is transmitted that indicates that the long slot time is to be used and that includes the local LSTT. When the TBTT is after the local LSTT, a beacon is transmitted that indicates that the short slot time is to be used.
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Citations
33 Claims
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1. A method for operating a Basic Service Set (BSS)/Independent Basic Service Set (IBSS) of a Wireless Local Area Network (WLAN) that services a plurality of WLAN devices (STAs), wherein at least one STA of the plurality of STAs supports multiple slot times, the method comprising:
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initiating operation of the BSS/IBSS of the WLAN using a short slot time;
determining that operation of the BSS/IBSS requires use of a long slot time, wherein the long slot time is longer than the short slot time; and
altering operation of at least one of the plurality of STAs to be consistent with the long slot time by;
using the long slot time;
setting a local Long Slot Termination Time (LSTT);
when a Target Beacon Transition Time (TBTT) is before the local LSTT, transmitting a beacon that indicates that the long slot time is to be used and that includes the local LSTT; and
when the TBTT is after the local LSTT, transmitting a beacon that indicates that the short slot time is to be used. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for operating a STA of an Independent Basic Service Set (IBSS) of a Wireless Local Area Network (WLAN), wherein the STA supports multiple slot times, the method comprising:
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operating the STA using a short slot time;
determining that operation of the BSS/IBSS requires use of a long slot time, wherein the long slot time is longer than the short slot time; and
altering operation to be consistent with the long slot time by;
using the long slot time;
setting a local Long Slot Termination Time (LSTT);
when a Target Beacon Transition Time (TBTT) is before the local LSTT, transmitting a beacon that indicates that the long slot time is to be used and that includes the local LSTT; and
when the TBTT is after the local LSTT, transmitting a beacon that indicates that the short slot time is to be used. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A method for operating a STA of a Basic Service Set (BSS)/Independent Basic Service Set (IBSS) of a Wireless Local Area Network (WLAN), wherein the STA supports multiple slot times, the method comprising:
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operating the STA using a short slot time;
determining that operation of the BSS/IBSS requires use of a long slot time, wherein the long slot time is longer than the short slot time;
receiving a beacon from another STA of the BSS/IBSS, wherein the beacon includes a remote LSTT;
when the remote LSTT precedes the local LSTT, ignoring the remote LSTT; and
when the remote LSTT is later than the local LSTT, writing the remote LSTT as the local LSTT. - View Dependent Claims (20, 21, 22, 23, 24, 25)
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26. A Wireless Local Area Network (WLAN) device (STA) that supports multiple slot times, the STA comprising:
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a Radio Frequency (RF) interface that supports communications with at least one other STA of the WLAN;
a processor operably coupled to the RF interface; and
wherein the RF interface and the processor cooperatively operate to;
commence operations using a short slot time;
determine that operation requires use of a long slot time, wherein the long slot time is longer than the short slot time by;
using the long slot time;
setting a local Long Slot Termination Time (LSTT);
when a Target Beacon Transition Time (TBTT) is before the local LSTT, transmitting a beacon that indicates that the long slot time is to be used and that includes the local LSTT; and
when the TBTT is after the local LSTT, transmitting a beacon that indicates that the short slot time is to be used. - View Dependent Claims (27, 28, 29, 30)
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31. A Wireless Local Area Network (WLAN) device (STA) that supports multiple slot times, the STA comprising:
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a Radio Frequency (RF) interface that supports communications with at least one other STA of the WLAN;
a processor operably coupled to the RF interface; and
wherein the RF interface and the processor cooperatively operate to;
commence operations using a short slot time;
determine that operation requires use of a long slot time, wherein the long slot time is longer than the short slot time by;
using the long slot time;
receiving a beacon from another STA, wherein the beacon includes a remote LSTT;
when the remote LSTT precedes the local LSTT, ignoring the remote LSTT; and
when the remote LSTT is later than the local LSTT, writing the remote LSTT as the local LSTT. - View Dependent Claims (32, 33)
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Specification