Power saving via variable listen intervals in a WLAN
First Claim
1. A method of increasing a power saving potential of a wireless client device that is associated with an access point in an association having a value for a listen interval parameter, the method comprising:
- determining, according to predefined considerations, a different value for said listen interval parameter, wherein said predefined considerations comprise a charge level of a battery to power said wireless client device; and
declaring said different value for said listen interval parameter in a wireless transmission to said access point,wherein said listen interval parameter specifies a number of beacon intervals that can pass from a time said wireless client device listens for a beacon frame from said access point before said wireless client device listens for a next beacon frame from said access point.
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Abstract
A wireless client device is associated with an access point in an association having a value for a listen interval parameter. The wireless client device determines, according to predefined considerations, a different value for the listen interval parameter, and declares the different value for the listen interval parameter in a wireless transmission to the access point. The listen interval parameter specifies a number of beacon intervals that can pass from a time the wireless client device listens for a beacon frame from the access point before the wireless client device listens for a next beacon frame from the access point.
91 Citations
9 Claims
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1. A method of increasing a power saving potential of a wireless client device that is associated with an access point in an association having a value for a listen interval parameter, the method comprising:
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determining, according to predefined considerations, a different value for said listen interval parameter, wherein said predefined considerations comprise a charge level of a battery to power said wireless client device; and declaring said different value for said listen interval parameter in a wireless transmission to said access point, wherein said listen interval parameter specifies a number of beacon intervals that can pass from a time said wireless client device listens for a beacon frame from said access point before said wireless client device listens for a next beacon frame from said access point. - View Dependent Claims (2)
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3. A wireless client device comprising:
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a memory to store a value of a listen interval parameter that specifies a number of beacon intervals that can pass from a time said wireless client device listens for a beacon frame from an access point before said wireless client device listens for a next beacon frame from said access point; a radio through which said device is associated with said access point in an association having said value for said listen interval parameter; and a processor to determine, according to predefined considerations, a different value for said listen interval parameter and to declare said different value for said listen interval parameter to said access point via said radio, wherein said predefined considerations comprise a charge level of a battery to power said wireless client device. - View Dependent Claims (4, 5)
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6. A wireless communications system comprising:
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an access point; and a wireless client device comprising; a memory to store a value of a listen interval parameter that specifies a number of beacon intervals that can pass from a time said wireless client device listens for a beacon frame from said access point before said wireless client device listens for a next beacon frame from said access point; a radio through which said device is associated with said access point in an association having said value for said listen interval parameter; and a processor to determine, according to predefined considerations, a different value for said listen interval parameter and to declare said different value for said listen interval parameter to said access point via said radio, wherein said predefined considerations comprise a charge level of a battery to power said wireless client device. - View Dependent Claims (7, 8)
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9. A memory comprising computer code, which when executed by a processor of a wireless client device that is associated with an access point in an association having a value for a listen interval parameter, results in the wireless client device:
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determining, according to predefined considerations, a different value for said listen interval parameter, wherein said predefined considerations comprise a charge level of a battery to power said wireless client device; and declaring said different value for said listen interval parameter in a wireless transmission to said access point, wherein said listen interval parameter specifies a number of beacon intervals that can pass from a time said wireless client device listens for a beacon frame from said access point before said wireless client device listens for a next beacon frame from said access point.
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Specification