Power detection techniques and discrete gain state selection for wireless networking
First Claim
1. A method comprising:
- receiving a packet according to a wireless networking protocol;
selecting a first discrete gain state for at least one analog circuit for scaling a received RF waveform from among a plurality of discrete gain states;
processing the packet with the at least one analog circuit according to the first discrete gain state;
detecting a baseband power level from a digital baseband signal associated with the packet processed according to the first discrete gain state using first and second algorithms having different power detection characteristics, the first algorithm being a first high-power detection algorithm and the second algorithm being a concurrent second low-power detection algorithm;
selecting a second discrete gain state for the at least one analog circuit from among the plurality of discrete gain states if the baseband power level is greater than a threshold; and
processing the packet with the at least one analog circuit according to the second discrete gain state if selected based on the baseband power level and the threshold.
1 Assignment
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Accused Products
Abstract
A wireless communication device may include a receiver coupled to a modem. The receiver may receive a wireless packet according to a wireless networking protocol such as a protocol in the IEEE 802.11 family of wireless protocols. Upon receiving a packet, the receiver may processes the packet according to a selected one of a plurality of discrete gain states. The modem coupled to the receiver may select the gain state used to process the packet such as by sending one or more signals to the receiver to reduce the gain state after determining that the current gain state is too large. The modem may implement a plurality of power detection modules in order to detect signals at varying power levels. The implementation of a plurality of power detectors may allow the gain state selection process to be performed very quickly as required by some wireless networking protocols.
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Citations
40 Claims
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1. A method comprising:
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receiving a packet according to a wireless networking protocol; selecting a first discrete gain state for at least one analog circuit for scaling a received RF waveform from among a plurality of discrete gain states; processing the packet with the at least one analog circuit according to the first discrete gain state; detecting a baseband power level from a digital baseband signal associated with the packet processed according to the first discrete gain state using first and second algorithms having different power detection characteristics, the first algorithm being a first high-power detection algorithm and the second algorithm being a concurrent second low-power detection algorithm; selecting a second discrete gain state for the at least one analog circuit from among the plurality of discrete gain states if the baseband power level is greater than a threshold; and processing the packet with the at least one analog circuit according to the second discrete gain state if selected based on the baseband power level and the threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method comprising:
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determining received power of a digital baseband signal over an entire bandwidth of the digital baseband signal using first and second algorithms having different power detection characteristics, the first algorithm being a first high-power detection algorithm and the second algorithm being a concurrent second low-power detection algorithm; generating a first power indicator when the received power of the digital baseband signal as calculated using the first algorithm exceeds a first threshold; and generating a second power indicator when the received power of the digital baseband signal as calculated using the second algorithm exceeds a second threshold. - View Dependent Claims (11, 12, 13)
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14. A method comprising:
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determining received power of a digital baseband signal over an entire bandwidth of the digital baseband signal using first and second algorithms, the first algorithm being a first high-power detection algorithm and the second algorithm being a concurrent second low-power detection algorithm; generating a first power indicator when the received power of the digital baseband signal as calculated using the first algorithm exceeds a first threshold; generating a second power indicator when the received power of the digital baseband signal as calculated using the second algorithm exceeds a second threshold; and when the received power as calculated using the second algorithm does not exceed the second threshold, generating an indicator that no signal was detected.
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15. A method comprising:
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determining received power of a digital baseband signal over an entire bandwidth of the digital baseband signal using first and second algorithms, the first algorithm being a first high-power detection algorithm and the second algorithm being a concurrent second low-power detection algorithm; generating a first power indicator when the received power of the digital baseband signal as calculated using the first algorithm exceeds a first threshold; generating a second power indicator when the received power of the digital baseband signal as calculated using the second algorithm exceeds a second threshold; generating a third power indicator when the received power of the digital baseband signal as calculated using the first algorithm exceeds a gain-state-switch threshold; and upon generating the third power indicator, adjusting a discrete gain state of a wireless communication device.
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16. A method comprising:
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determining received power of a digital baseband signal over an entire bandwidth of the digital baseband signal using first and second algorithms having different power detection characteristics, the first algorithm being a first high-power detection algorithm and the second algorithm being a concurrent second low-power detection algorithm; generating a gain-state-switch power indicator when the received power of the digital baseband signal as calculated using the first algorithm exceeds a first threshold; generating a high power indicator when the received power of the digital baseband signal as calculated using the first algorithm exceeds a second threshold; generating a low power indicator when the received power of the digital baseband signal as calculated using the second algorithm exceeds a third threshold; and adjusting a gain state of a wireless communication device upon generating the gain-state-switch power indicator. - View Dependent Claims (17)
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18. A wireless communication device comprising:
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a receiver that receives a packet according to a wireless networking protocol, the receiver comprising at least one analog circuit block for scaling an RF waveform that processes the packet according to a first discrete gain state among a plurality of discrete gain states and further according to a second discrete gain state among the plurality of discrete gain states if selected based on a baseband power level associated with the packet and a threshold; and a modem coupled to the receiver, that selects the first discrete gain state for the at least one analog circuit block used to process the packet, detects the baseband power level from a digital baseband signal associated with the packet processed according to the first discrete gain state using first and second algorithms having different power detection characteristics, the first algorithm being a first high-power detection algorithm and the second algorithm being a concurrent second low-power detection algorithm, and selects the second discrete gain state for the at least one analog circuit block if the baseband power level is greater than the threshold. - View Dependent Claims (19, 20)
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21. A receiver comprising:
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circuitry that receives a packet according to a wireless networking protocol; and analog circuitry for scaling an RF waveform that processes the packet according to a first discrete gain state among a plurality of discrete gain states and further according to a second discrete gain state among the plurality of discrete gain states if selected based on a detected baseband power level from a digital baseband signal associated with the packet and a threshold using first and second algorithms having different power detection characteristics, the first algorithm being a first high-power detection algorithm and the second algorithm being a concurrent second low-power detection algorithm. - View Dependent Claims (22, 23)
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24. A modem comprising:
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a first power detection module that calculates received power of a digital baseband signal over an entire bandwidth of the digital baseband signal using a first algorithm and generates a first power indicator when the received power of the digital baseband signal as calculated using the first algorithm exceeds a first threshold; and a second power detection module that calculates received power of the digital baseband signal over the entire bandwidth of the digital baseband signal using a second algorithm and generates a second power indicator when the received power of the digital baseband signal as calculated using the second algorithm exceeds a second threshold, the first and second algorithms having different power detection characteristics, the first algorithm being a first high-power detection algorithm and the second algorithm being a concurrent second low-power detection algorithm. - View Dependent Claims (25, 26, 27)
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28. A modem comprising:
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a first power detection module that calculates received power of a digital baseband signal over an entire bandwidth of the digital baseband signal using a first algorithm and generates a first power indicator when the received power of the digital baseband signal as calculated using the first algorithm exceeds a first threshold; and a second power detection module that calculates received power of the digital baseband signal over the entire bandwidth of the digital baseband signal using a second algorithm and generates a second power indicator when the received power of the digital baseband signal as calculated using the second algorithm exceeds a second threshold, the first algorithm being a first high-power detection algorithm and the second algorithm being a concurrent second low-power detection algorithm, wherein the modem generates a third power indicator when the received power of the digital baseband signal as calculated using the first algorithm exceeds a gain-state-switch threshold, and wherein upon generating the third power indicator the modem adjusts a discrete gain state of a wireless communication device.
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29. A wireless communication device comprising:
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a receiver that receives a packet according to a wireless networking protocol; and a modem that selects a first discrete gain state for the receiver for processing of the packet, detects a baseband power level from a digital baseband signal associated with the packet processed according to the first discrete gain state, and selects a second discrete gain state for the receiver if the baseband power level is greater than a threshold, wherein the receiver processes the packet with at least one analog circuit block for scaling an RF waveform according to the first discrete gain state and further according to the second discrete gain state if selected based on the baseband power level and the threshold using first and second algorithms having different power detection characteristics, the first algorithm being a first high-power detection algorithm and the second algorithm being a concurrent second low-power detection algorithm. - View Dependent Claims (30, 31, 32, 33, 34, 35)
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36. An apparatus comprising:
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means for receiving a packet according to a wireless networking standard; means for analog processing the packet by scaling a received RF waveform according to a first discrete gain state among a plurality of discrete gain states; and means for analog processing the packet according to a second discrete gain state if selected based on a detected baseband power level from a digital baseband signal associated with the packet analog processed according to the first discrete gain state and a threshold using first and second algorithms having different power detection characteristics, the first algorithm being a first high-power detection algorithm and the second algorithm being a concurrent second low-power detection algorithm. - View Dependent Claims (37, 38, 39, 40)
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Specification