Method and apparatus for distributed processing for wireless sensors
First Claim
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1. A method of processing data, the method comprising:
- maintaining, at a first apparatus, a first clock signal, wherein the first apparatus comprises a gateway of a body area network (BAN);
transmitting, from the first apparatus, a clock synchronization signal for synchronizing a second clock signal, at a second apparatus, to the first clock signal, wherein the second apparatus comprises a sensor in the BAN;
receiving, at the first apparatus, one or more packets comprising a first set of samples indicative of an input over a period of time, the first set of samples corresponding to the second clock signal, and wherein samples in the first set of samples are spaced at non-uniform time-instances over the period of time; and
generating, at the first apparatus, a second set of samples representing the signal over the period of time based, at least in part, on the first set of samples, wherein the second set of samples corresponds to the first clock signal, and wherein samples in the second set of samples are spaced at uniform time instances over the period of time.
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Abstract
Certain aspects of the present disclosure relate to a method for compressed sensing (CS). The CS is a signal processing concept wherein significantly fewer sensor measurements than that suggested by Shannon/Nyquist sampling theorem can be used to recover signals with arbitrarily fine resolution. In this disclosure, the CS framework is applied for sensor signal processing in order to support low power robust sensors and reliable communication in Body Area Networks (BANs) for healthcare and fitness applications.
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Citations
18 Claims
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1. A method of processing data, the method comprising:
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maintaining, at a first apparatus, a first clock signal, wherein the first apparatus comprises a gateway of a body area network (BAN); transmitting, from the first apparatus, a clock synchronization signal for synchronizing a second clock signal, at a second apparatus, to the first clock signal, wherein the second apparatus comprises a sensor in the BAN; receiving, at the first apparatus, one or more packets comprising a first set of samples indicative of an input over a period of time, the first set of samples corresponding to the second clock signal, and wherein samples in the first set of samples are spaced at non-uniform time-instances over the period of time; and generating, at the first apparatus, a second set of samples representing the signal over the period of time based, at least in part, on the first set of samples, wherein the second set of samples corresponds to the first clock signal, and wherein samples in the second set of samples are spaced at uniform time instances over the period of time. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A gateway of a body area network (BAN), comprising:
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means for maintaining a first clock signal; means for transmitting a clock synchronization signal for synchronizing a second clock signal, at a sensor in the BAN, to the first clock signal; means for receiving one or more packets comprising a first set of samples indicative of an input over a period of time, the first set of samples corresponding to the second clock signal, and wherein samples in the first set of samples are spaced at non-uniform time-instances over the period of time; and means for generating, at the gateway of the BAN, a second set of samples representing the signal over the period of time based, at least in part, on the first set of samples, wherein the second set of samples corresponds to the first clock signal, and wherein samples in the second set of samples are spaced at uniform time instances over the period of time. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A gateway of a body area network (BAN), comprising:
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at least one processor coupled with a memory and configured to maintain a first clock signal; a transmitter configured to transmit a clock synchronization signal for synchronizing a second clock signal, at a sensor in the BAN, to the first clock signal; and a receiver configured to receive one or more packets comprising a first set of samples indicative of an input over a period of time, the first set of samples corresponding to the second clock signal, wherein; samples in the first set of samples are spaced at non-uniform time-instances over the period of time; the at least one processor is further configured to generate a second set of samples representing the signal over the period of time based, at least in part, on the first set of samples; the second set of samples corresponds to the first clock signal; and samples in the second set of samples are spaced at uniform time instances over the period of time. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification