Dynamic noise floors in a wireless device
First Claim
1. A method comprising:
- receiving a wireless signal, wherein the wireless signal is a correlatable signal;
determining if a measured power for the wireless signal is greater than a threshold;
when the measured power is greater than the threshold, processing the wireless signal in accordance with a wireless networking protocol to be demodulated to determine whether the wireless signal corresponds to a packet for the wireless networking protocol to be demodulated; and
when the processed and correlatable wireless signal does not correspond to a packet for the wireless networking protocol to be demodulated, adjusting the threshold so that the measured power for the wireless signal is less than the threshold to avoid subsequent detection of the wireless signal.
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Accused Products
Abstract
A wireless device configured to support a wireless networking protocol may utilize signal processing techniques that can mitigate the effects of jammer signals. For example, when a measured power associated with a digital sample of a received wireless signal is greater than a threshold, the wireless device may determine if the wireless signal corresponds to a wireless networking packet to be demodulated. If the wireless signal does not correspond to a wireless networking packet to be demodulated, the wireless device may adjust the threshold so that the power associated with the digital sample is less than the threshold. In other words, if the signal is a jammer signal, the wireless device may adjust its noise floor upward so that continuous reception of the same jammer signal does not trigger demodulation a second time.
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Citations
19 Claims
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1. A method comprising:
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receiving a wireless signal, wherein the wireless signal is a correlatable signal; determining if a measured power for the wireless signal is greater than a threshold; when the measured power is greater than the threshold, processing the wireless signal in accordance with a wireless networking protocol to be demodulated to determine whether the wireless signal corresponds to a packet for the wireless networking protocol to be demodulated; and when the processed and correlatable wireless signal does not correspond to a packet for the wireless networking protocol to be demodulated, adjusting the threshold so that the measured power for the wireless signal is less than the threshold to avoid subsequent detection of the wireless signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method comprising:
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receiving a wireless signal, wherein the wireless signal is a correlatable signal; processing the wireless signal in one of a plurality of gain states; determining if a measured power for the wireless signal is greater than a threshold; when the measured power is greater than the threshold, processing the wireless signal in accordance with a wireless networking protocol to be demodulated to determine whether the wireless signal corresponds to the wireless networking packet to be demodulated; when the processed and correlatable wireless signal does not correspond to the wireless networking packet to be demodulated, adjusting the threshold so that the measured power for the wireless signal is less than the threshold to avoid subsequent detection of the wireless signal; and disabling adjustment of the threshold in at least one of the plurality of gain states.
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13. A method comprising:
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receiving a wireless signal, wherein the wireless signal is a correlatable signal; processing the wireless signal in one of a plurality of gain states; measuring an average power level of the wireless signal; defining upper and lower thresholds relative to the average power level; determining if a measured power for the wireless signal exceeds the upper threshold; when the measured power exceeds the upper threshold, processing the wireless signal in accordance with a wireless networking protocol to be demodulated to determine whether the wireless signal is for a packet for the wireless networking protocol to be demodulated; and when the processed and correlatable wireless signal is not for a packet for the wireless networking protocol to be demodulated, adjusting the upper threshold so that the measured power for the wireless signal is less than the upper threshold to avoid subsequent detection of the wireless signal. - View Dependent Claims (14, 15)
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16. A wireless device comprising:
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a receiver that receives a wireless signal, wherein the wireless signal is a correlatable signal; and a control unit that determines if a measured power for the wireless signal is greater than a threshold, processes the wireless signal in accordance with a wireless networking protocol to be demodulated when the measured power is greater than the threshold to determine whether the wireless signal corresponds to the packet for a wireless networking protocol to be demodulated, and adjusts the threshold when the processed and correlatable wireless signal does not correspond to a packet for the wireless networking protocol to be demodulated so that the measured power for the wireless signal is less than the threshold to avoid subsequent detection of the wireless signal. - View Dependent Claims (17, 18, 19)
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Specification