Link margin notification using return frame
First Claim
1. A method comprising:
- receiving, at a first wireless device, a plurality of first frames from a second wireless device;
the first wireless device determining an overall link margin by calculating a moving average of individual link margins for each of the plurality of frames received from the second wireless device; and
the first wireless device transmitting the overall link margin for reception by the second wireless device in a second frame.
7 Assignments
0 Petitions
Accused Products
Abstract
Disclosed herein are techniques for power management in wireless networks. Based upon receipt of an indication of the link margin of a receiving wireless device, a transmitting wireless device may adjust its transmit power commensurate with the link margin. The indication of the link margin may be transmitted from the receiving wireless device to the transmitting wireless device periodically. Alternatively, the receiving wireless station may provide the indication of the link margin in response to information received from the transmitting wireless device. In this instance, the indication of the link margin may be included in a piggyback acknowledgement (ACK) frame conventionally used to acknowledge receipt of the information transmitted by the transmitting wireless station.
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Citations
41 Claims
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1. A method comprising:
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receiving, at a first wireless device, a plurality of first frames from a second wireless device; the first wireless device determining an overall link margin by calculating a moving average of individual link margins for each of the plurality of frames received from the second wireless device; and the first wireless device transmitting the overall link margin for reception by the second wireless device in a second frame. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method comprising:
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receiving, at a first wireless device, a frame from a second wireless device, the second frame including a link margin of the second wireless device; and successively lowering a transmit power of the first wireless device based at least in part on the link margin of the second wireless device until a packet error rate reaches a threshold at which the packet error rate becomes intolerable. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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21. A method comprising:
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receiving, at a second wireless device, a plurality of frames transmitted by a first wireless device at a first transmit power; the second wireless device determining an overall link margin by calculating a moving average of individual link margins for each of the plurality of frames received from the first wireless device; transmitting an acknowledgement (ACK) frame from the second wireless device for reception by the first wireless device, the ACK frame acknowledging receipt of one or more frames at the second wireless device and including the link margin of the second wireless device determined relative to the one or more frames; and receiving, at the second wireless device, one or more additional frames transmitted by the first wireless device at a second transmit power lower than the first transmit power. - View Dependent Claims (22, 23, 24, 25, 29, 30, 31, 32)
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26. A first wireless device comprising:
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a transceiver configured to receive a plurality of first frames from a second wireless device; a link margin measurement module configured to determine a link margin of the first wireless device based at least in part on a calculation of a moving average of individual link margins for each of the plurality of first frames received by the transceiver; wherein the transceiver is further configured to transmit the determined link margin in a second frame for reception by the second wireless device. - View Dependent Claims (27, 28)
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33. A first wireless device comprising:
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a transceiver configured to; transmit one or more frames to a second wireless device; and receive an acknowledgment of receipt of the one or more frames from the second wireless device, the acknowledgement including a link margin of the second wireless device based at least in part on the reception of the one or more frames; and a transmit power adjustment module configured to successively lower a transmit power of the transceiver based at least in part on the link margin of the second wireless device until a packet error rate reaches a threshold at which the packet error rate becomes intolerable. - View Dependent Claims (34, 35, 36, 37)
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38. An article of manufacture including a tangible computer-readable medium having instructions stored thereon that, if executed by a computing device, cause the computing device to perform operations comprising:
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receiving a plurality of first frames from a wireless device; determining an overall link margin by calculating a moving average of individual link margins for each of the plurality of frames received from the wireless device; and transmitting the overall link margin for reception by the wireless device in a second frame.
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39. An article of manufacture including a tangible computer-readable medium having instructions stored thereon that, if executed by a computing device, cause the computing device to perform operations comprising:
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receiving, at a first wireless device, a frame from a second wireless device, the second frame including a link margin of the second wireless device; and successively lowering a transmit power of the first wireless device based at least in part on the link margin of the second wireless device until a packet error rate reaches a threshold at which the packet error rate becomes intolerable. - View Dependent Claims (40, 41)
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Specification