Efficient ranging
First Claim
1. An apparatus for wireless communications, comprising:
- a processing system configured to;
determine a period that at least one wireless device is scheduled to be awake; and
generate a first frame for transmission to the at least one wireless device during the period;
a first interface configured to output the first frame for transmission; and
a second interface configured to obtain a second frame after the first frame is output for transmission, wherein;
the processing system is further configured to;
determine ranging information based on a time difference between outputting the first frame and obtaining the second frame; and
generate a third frame including the ranging information; and
the first interface is further configured to output the third frame for transmission.
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Accused Products
Abstract
Aspects of the present disclosure provide techniques for efficient ranging, for example, in a neighbor aware network (NAN). According to certain aspects, an apparatus for wireless communications is provided. The apparatus generally includes a processing system configured to determine a period that at least one second apparatus is scheduled to be awake, generate a first frame for transmission to the second apparatus during the period, determine ranging information based on a time difference between transmission of the first frame and receipt of a second frame in response to the first frame, and generate a third frame including the ranging information; a transmit interface configured to output the first and third frames for transmission; and a receive interface configured to obtain the second frame. By exchanging ranging information in already scheduled wake-up periods and in existing frame, power consumption and signaling overhead may be reduced.
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Citations
30 Claims
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1. An apparatus for wireless communications, comprising:
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a processing system configured to; determine a period that at least one wireless device is scheduled to be awake; and generate a first frame for transmission to the at least one wireless device during the period; a first interface configured to output the first frame for transmission; and a second interface configured to obtain a second frame after the first frame is output for transmission, wherein; the processing system is further configured to; determine ranging information based on a time difference between outputting the first frame and obtaining the second frame; and generate a third frame including the ranging information; and the first interface is further configured to output the third frame for transmission. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An apparatus for wireless communications, comprising:
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a processing system configured to determine a period to awake from a first power state; a first interface configured to obtain a first frame from a wireless device during the period, wherein the processing system is further configured to generate a second frame for transmission to the wireless device after the first frame is obtained from the wireless device during the period; and a second interface configured to output the second frame for transmission to the wireless device, wherein; the first interface is further configured to obtain a third frame comprising ranging information; and the processing system is further configured to determine a relative location of the wireless device to the apparatus based on the ranging information included in the third frame. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A method for wireless communications by an apparatus, comprising:
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determining a period that at least one wireless device is scheduled to be awake; generating a first frame for transmission to the wireless device during the period; outputting the first frame for transmission and obtaining a second frame after outputting the first frame; determining ranging information based on a time difference between outputting the first frame and obtaining the second frame generating a third frame including the ranging information; and outputting the third frame for transmission.
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30. A method for wireless communications by an apparatus, comprising:
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determining a period to awake from a first power state; obtaining a first frame from a wireless device during the period; generating a second frame for transmission to the wireless device after obtaining the first frame from the wireless device during the period; outputting the second frame for transmission to the wireless device; obtaining a third frame comprising ranging information; and determining a relative location of the wireless device to the apparatus based on the ranging information included in the third frame.
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Specification