Uplink signal bandwidth characterization from channel state information
First Claim
1. A method comprising:
- at a wireless communication device having a plurality of antennas, receiving incident power in at least two adjacent frequency channels allocated to a basic service set in a wireless network;
computing channel state information for the at least two frequency channels allocated to the basic service set based on the incident power received in each of the at least two frequency channels;
generating a plurality of metrics based on the channel state information in the at least two frequency channels, wherein the plurality of metrics include at least one of a channel state information subcarrier correlation metric between corresponding positive and negative subcarriers at a boundary of the at least two channels, and a time-based correlation metrics for channel state information in the at least two channels, respectively; and
performing logical and/or arithmetic combining of two or more of the plurality of metrics to characterize an uplink signal bandwidth associated with the at least two channels to determine whether or not the incident power received in the at least two channels is from the same device.
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Abstract
Techniques are provided to determine whether or not incident power at a wireless communication device in at least two frequency channels is from the same device. Incident power in frequency channels allocated to a basic service set in a wireless network is received at a plurality of antennas of the wireless communication device. Channel state information is computed for at least two frequency channels allocated to the basic service set. One or more metrics are generated based on the channel state information in the two frequency channels. The one or more metrics are evaluated to characterize an uplink signal bandwidth associated with the two channels to determine whether or not the incident power in the two channels is from the same device.
13 Citations
25 Claims
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1. A method comprising:
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at a wireless communication device having a plurality of antennas, receiving incident power in at least two adjacent frequency channels allocated to a basic service set in a wireless network; computing channel state information for the at least two frequency channels allocated to the basic service set based on the incident power received in each of the at least two frequency channels; generating a plurality of metrics based on the channel state information in the at least two frequency channels, wherein the plurality of metrics include at least one of a channel state information subcarrier correlation metric between corresponding positive and negative subcarriers at a boundary of the at least two channels, and a time-based correlation metrics for channel state information in the at least two channels, respectively; and performing logical and/or arithmetic combining of two or more of the plurality of metrics to characterize an uplink signal bandwidth associated with the at least two channels to determine whether or not the incident power received in the at least two channels is from the same device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An apparatus comprising:
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a plurality of antennas; a receiver coupled to the plurality of antennas and configured to produce antenna-specific receive signals; a controller coupled to the receiver, wherein the controller; computes channel state information for at least two frequency channels allocated to a basic service set based on received incident power at the plurality of antennas in the at least two frequency channels; generates a plurality of metrics based on the channel state information for the at least two frequency channels, wherein the plurality of metrics include at least one of a channel state information subcarrier correlation metric between corresponding positive and negative subcarriers at a boundary of the at least two channels, and a time-based correlation metrics for channel state information in the at least two channels, respectively; and performs logical and/or arithmetic combining of two or more of the plurality of metrics to characterize an uplink signal bandwidth associated with the at least two channels to determine whether or not the incident power received in the at least two channels is from the same device. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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20. One or more non-transitory computer readable storage media encoded with software comprising computer executable instructions and when the software is executed by a processor operable to:
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compute channel state information for at least two frequency channels allocated to a basic service set based on received incident power at a plurality of antennas of a wireless communication device in the at least two frequency channels; generate a plurality of metrics based on the channel state information for the at least two frequency channels, wherein the plurality of metrics include at least one of a channel state information subcarrier correlation metric between corresponding positive and negative subcarriers at a boundary of the at least two channels, and a time-based correlation metrics for channel state information in the at least two channels, respectively; and perform logical and/or arithmetic combining of two or more of the plurality of metrics to characterize an uplink signal bandwidth associated with the at least two channels to determine whether or not the incident power in the at least two channels is from the same device. - View Dependent Claims (21, 22, 23, 24, 25)
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Specification