Systems, methods, and devices for identifying Wi-Fi signals for spatial reuse
AssigneeIntel Corporation
InventorsPo-Kai Huang, Robert Stacey, Rongzhen Yang, Qinghua Li, Xiaogang Chen
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Abstract
Example systems, methods, and devices for differentiating Wi-Fi signals for spatial reuse are discussed. More specifically, a communication station arranged for Clear Channel Assessment (CCA) channel status reporting, an access point, and communication methodologies therebetween are disclosed. Methods, apparatus, and systems described herein can be applied to 802.11ax or any other wireless standard.
Claims23
A device for identifying one or more Wi-Fi signals, the device comprising:
- physical layer circuitry,
- one or more antennas,
- at least one memory, and
- one or more processing elements to:
- detect one or more cyclic prefixes (CP) in an Orthogonal Frequency Division Multiplexing (OFDM) symbol;
- identify one or more energy peaks by matching the one or more CPs with a duration of the OFDM symbol using a sliding window having a length of the duration of the OFDM symbol;
- and
- identify one or more Wi-Fi spatial reuse signals by combining the one or more energy peaks to produce a larger energy peak.
A non-transitory computer readable storage device including instructions stored thereon, which when executed by one or more processor(s) of a communication station, cause the communication station to perform operations of:
- detecting one or more cyclic prefixes (CP) in an Orthogonal Frequency Division Multiplexing (OFDM) symbol;
- identifying one or more energy peaks by matching the one or more CPs with a duration of the OFDM symbol using a sliding window having a length of the duration of the OFDM symbol;
- and
- identifying one or more Wi-Fi spatial reuse signals by combining the one or more energy peaks to produce a larger energy peak.
A method for identifying one or more Wi-Fi signals in a Wi-Fi network, the method comprising:
- detecting one or more cyclic prefixes (CP) in an Orthogonal Frequency Division Multiplexing (OFDM) symbol;
- identifying one or more energy peaks by matching the one or more CPs with a duration of the OFDM symbol using a sliding window having a length of the duration of the OFDM symbol;
- and
- identifying one or more Wi-Fi spatial reuse signals by combining the one or more energy peaks to produce a larger energy peak.
A system comprising:
- at least one wireless communication device for identifying one or more Wi-Fi signals, the one or more wireless communication devices comprising:
- physical layer circuitry,
- one or more antennas,
- at least one memory, and
- one or more processing elements to:
- detect one or more cyclic prefixes (CP) in an Orthogonal Frequency Division Multiplexing (OFDM) symbol;
- identify one or more energy peaks by matching the one or more CPs with a duration of the OFDM symbol using a sliding window having a length of the duration of the OFDM symbol;
- and
- identify the one or more Wi-Fi spatial reuse signals by combining the one or more energy peaks to produce a larger energy peak.
Dependencies are inferred from the claim text.