Wireless local area network with spatial diagnostics
First Claim
1. A diagnostic system for spatial diagnosis of a wireless local area network (WLAN), and the diagnostic system comprising:
- a sounding aggregator configured to aggregate multiple-input multiple-output (MIMO) channel state information (CSI) from channel soundings of each communication link On the WLAN between a wireless access point (WAP) node thereof and associated station nodes and to retain a history of the CSI on each link after normal use in WLAN communications, whereby the history includes CSI from prior channel soundings of each communication link, and wherein the channel soundings include at least one of;
an explicit channel sounding, an implicit channel sounding and an unsolicited channel sounding; and
a spatial correlator coupled to the sounding aggregator and configured to correlate the CSI history from each link'"'"'s prior channel soundings with spatial characteristics of the WLAN including an identification of human activity relative to at least an identified one of the station nodes based on perturbations over time in the CSI history of an associated communication link with the WAP node.
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Accused Products
Abstract
A diagnostic system for spatial diagnosis of the WLAN includes: a sounding aggregator and a spatial correlator. The sounding aggregator is configured to aggregate multiple-input multiple-output (MIMO) channel state information (CSI) from channel soundings of the WLAN, including channel soundings between a wireless access point (WAP) node and associated station nodes on a selected one of a plurality of communication channels of the WLAN. The spatial correlator is coupled to the sounding aggregator and configured to correlate CSI from the channel soundings with spatial characteristics of the WLAN including at least one of: a change in location of a WLAN node, human activity among the WLAN nodes, and structural impediments among WLAN nodes.
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Citations
22 Claims
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1. A diagnostic system for spatial diagnosis of a wireless local area network (WLAN), and the diagnostic system comprising:
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a sounding aggregator configured to aggregate multiple-input multiple-output (MIMO) channel state information (CSI) from channel soundings of each communication link On the WLAN between a wireless access point (WAP) node thereof and associated station nodes and to retain a history of the CSI on each link after normal use in WLAN communications, whereby the history includes CSI from prior channel soundings of each communication link, and wherein the channel soundings include at least one of;
an explicit channel sounding, an implicit channel sounding and an unsolicited channel sounding; anda spatial correlator coupled to the sounding aggregator and configured to correlate the CSI history from each link'"'"'s prior channel soundings with spatial characteristics of the WLAN including an identification of human activity relative to at least an identified one of the station nodes based on perturbations over time in the CSI history of an associated communication link with the WAP node.
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2. A method for spatial diagnosis of a wireless local area network (WLAN), and the method comprising:
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aggregating multiple-input multiple-output (MIMO) channel state information (CSI) from channel soundings of each communication link between a wireless access point (WAP) node and associated station nodes on the WLAN, wherein the channel soundings include at least one of;
an explicit channel sounding, an implicit channel sounding, and an unsolicited channel sounding;retaining a history of the CSI on each link aggregated in the aggregating act after normal use in WLAN communications, whereby the history includes CSI from prior channel soundings of each communication link; and correlating the CSI history from each link'"'"'s prior channel soundings with spatial characteristics of the WLAN including an identification of human activity relative to at least an identified one of the station nodes based on perturbations over time in the CSI history of an associated communication link with the WAP node.
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3. A diagnostic system for spatial diagnosis of a wireless local area network (WLAN), and the diagnostic system comprising:
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a sounding aggregator configured to aggregate multiple-input multiple-output (MIMO) channel state information (CSI) from channel soundings of each communication link on the WLAN between a wireless access point (WAP) node thereof and associated station nodes and to retain a history of the CSI on each link after normal use in WLAN communications, whereby the history includes CSI from prior channel soundings of each communication link; and a spatial correlator coupled to the sounding aggregator and configured to correlate the CSI history from each link'"'"'s prior channel soundings with spatial characteristics of the WLAN including an identification of human activity relative to at least an identified one of the station nodes based on perturbations over time in the CSI history of an associated communication link with the WAP node. - View Dependent Claims (4, 5, 6, 7, 8, 9)
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10. A method for spatial diagnosis of a wireless local area network (WLAN), and the method comprising:
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aggregating multiple-input multiple-output (MIMO) channel state information (CSI) from channel soundings of each communication link between a wireless access point (WAP) node and associated station nodes on the WLAN; retaining a history of the CSI on each link aggregated in the aggregating act after normal use in WLAN communications, whereby the history includes CSI from prior channel soundings of each communication link; and correlating the CSI history from each link'"'"'s prior channel soundings with spatial characteristics of the WLAN including an identification of human activity relative to at least an identified one of the station nodes based on perturbations over time in the CSI history of an associated communication link with the WAP node. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A non-transitory computer readable medium containing program instructions for causing a computer to perform the method of:
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aggregating multiple-input multiple-output (MIMO) channel state information (CSI) from channel soundings of each communication link between a wireless access point (WAP) node and associated station nodes on the WLAN; retaining a history of the CSI on each link aggregated in the aggregating act after normal use in WLAN communications, whereby the history includes CSI from prior channel soundings of each communication link; and correlating the CSI history from each link'"'"'s prior channel soundings with spatial characteristics of the WLAN including an identification of human activity relative to at least an identified one of the station nodes based on perturbations over time in the CSI history of an associated communication link with the WAP node. - View Dependent Claims (18, 19, 20, 21, 22)
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Specification