Power management for wireless direct link
First Claim
1. A system comprising:
- a first wireless device configured to establish a first direct wireless link with a second wireless device and to transmit from the first wireless device to the second wireless device a first frame including a first time value indicating a first time duration that both the first wireless device and second wireless device should enter a power save mode; and
the second wireless device configured to establish a second direct wireless link with the first wireless device and to receive from the first wireless device at the second wireless device a frame including a second time value indicating a second time duration that both the first wireless device and second wireless device should enter the power save mode;
wherein the first wireless device and the second wireless device are configured to enter the power save mode and suspend the first or second direct wireless link for a duration determined based on the first or second time value and to exit from the power save mode and resume the first or second direct wireless link at a time determined based on the first or second time value.
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Accused Products
Abstract
Disclosed herein are exemplary techniques for managing power in a direct wireless link between two wireless devices. The present disclosure provides at least three direct link power management techniques: Fast Resumption Mode (FRM) wherein the direct link is resumed automatically at a specified timing synchronization function (TSF); Slow Resumption Mode (SRM) wherein the direct link may be resumed by sending a Resume-Request via the access point; and Reverse Polling (RP), wherein one peer station of the direct link is continually awake and the other peer station uses reverse polling to start a service period. Thus, a method for power management of a direct wireless link between two wireless devices is disclosed. The method comprising the steps of establishing a direct wireless link between the first wireless device and the second wireless device; transmitting, from a first wireless device, a frame having a time value; receiving, at the second wireless device, the frame from the first wireless device; suspending the direct wireless link a duration determined based on the time value; and resuming the direct wireless link at a time determined based on the time value.
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Citations
20 Claims
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1. A system comprising:
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a first wireless device configured to establish a first direct wireless link with a second wireless device and to transmit from the first wireless device to the second wireless device a first frame including a first time value indicating a first time duration that both the first wireless device and second wireless device should enter a power save mode; and the second wireless device configured to establish a second direct wireless link with the first wireless device and to receive from the first wireless device at the second wireless device a frame including a second time value indicating a second time duration that both the first wireless device and second wireless device should enter the power save mode; wherein the first wireless device and the second wireless device are configured to enter the power save mode and suspend the first or second direct wireless link for a duration determined based on the first or second time value and to exit from the power save mode and resume the first or second direct wireless link at a time determined based on the first or second time value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system comprising:
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a first wireless device; and a second wireless device in the presence of an access point; wherein the first wireless device is configured to establish a direct wireless link with the second wireless device and to transmit to the second wireless device or to receive from the second wireless device a first frame including a power management bit set indicating that a direct wireless link should be suspended and that the first and second wireless devices should enter a power save state; wherein the first wireless device is configured to exit the power save state and transmit a first resume-request frame to the second wireless device via the access point and to receive from the second wireless device, a second resume-request frame via the direct wireless link. - View Dependent Claims (11, 12, 13)
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14. A system comprising:
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a first wireless device; and a second wireless device; wherein the first wireless device is configured to establish a direct wireless link between the first wireless device and the second wireless device in which the first wireless device indicates to the second wireless device that it is a continuously awake node, wherein the first and second wireless devices form a wireless ad hoc network or operating as clients of a same wireless infrastructure network; wherein the first wireless device is configured to not send but instead buffer data intended for transmission to the second wireless device via the direct wireless link; and wherein the first wireless device is configured to receive a QoS-Null frame from the second wireless device indicating the start of a service period in which the second wireless device is not in power save mode. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification