High-efficiency station (STA) and method for decoding an HE-PPDU
First Claim
1. An apparatus of a station (STA), the apparatus comprising:
- memory;
and processing circuitry coupled to the memory, the processing circuitry configured to;
process a legacy preamble of a high-efficiency (HE) packet protocol data unit (HE-PPDU), the legacy preamble comprising a legacy signal field (L-SIG) following legacy training fields, the L-SIG including at least a length field and a rate field;
process a subsequent signal field following the L-SIG, wherein first and second orthogonal frequency division multiplexing (OFDM) symbols immediately following the L-SIG use binary phase-shift keying (BPSK) modulation;
determine whether the length field is divisible by three; and
decode one or more subsequent fields following the subsequent signal field of the (HE-PPDU) based on a determination that the length field is not divisible by three, the one or more subsequent fields including a high-efficiency signal field (HE-SIG-A).
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Accused Products
Abstract
Embodiments of a system and methods for distinguishing high-efficiency Wi-Fi (HEW) packets from legacy packets are generally described herein. In some embodiments, an access point may select a value for the length field of a legacy signal field (L-SIG) that is non-divisible by three for communicating with HEW stations and may select a value for the length field that is divisible by three for communicating with legacy stations. In some embodiments, the access point may select a phase rotation for application to the BPSK modulation of at least one of the first and second symbols of a subsequent signal field to distinguish a high-throughput (HT) PPDU, a very-high throughput (VHT) PPDU and an HEW PPDU.
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Citations
28 Claims
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1. An apparatus of a station (STA), the apparatus comprising:
- memory;
and processing circuitry coupled to the memory, the processing circuitry configured to; process a legacy preamble of a high-efficiency (HE) packet protocol data unit (HE-PPDU), the legacy preamble comprising a legacy signal field (L-SIG) following legacy training fields, the L-SIG including at least a length field and a rate field; process a subsequent signal field following the L-SIG, wherein first and second orthogonal frequency division multiplexing (OFDM) symbols immediately following the L-SIG use binary phase-shift keying (BPSK) modulation; determine whether the length field is divisible by three; and decode one or more subsequent fields following the subsequent signal field of the (HE-PPDU) based on a determination that the length field is not divisible by three, the one or more subsequent fields including a high-efficiency signal field (HE-SIG-A). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
- memory;
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13. A non-transitory computer-readable storage medium that stores instructions for execution by processing circuitry of an apparatus of a communication station (STA) to configure the STA to perform operations to:
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process a legacy preamble of a high-efficiency (HE) packet protocol data unit (HE-PPDU), the legacy preamble comprising a legacy signal field (L-SIG) following legacy training fields, the L-SIG including at least a length field and a rate field; process a subsequent signal field following the L-SIG, wherein first and second orthogonal frequency division multiplexing (OFDM) symbols immediately following the L-SIG use binary phase-shift keying (BPSK) modulation; determine whether the length field is divisible by three; and decode one or more subsequent fields following the subsequent signal field of the HE-PPDU based on a determination that the length field is not divisible by three, the one or more subsequent fields including a high-efficiency signal field (HE-SIG-A). - View Dependent Claims (14, 15)
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16. A method performed by an apparatus of a communication station (STA) comprising:
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processing a legacy preamble of a high-efficiency (HE) packet protocol data unit (HE-PPDU), the legacy preamble comprising a legacy signal field (L-SIG) following legacy training fields, the L-SIG including at least a length field and a rate field; processing a subsequent signal field following the L-SIG, wherein first and second orthogonal frequency division multiplexing (OFDM) symbols immediately following the L-SIG use binary phase-shift keying (BPSK) modulation; determining whether the length field is divisible by three; and decoding one or more subsequent fields following the subsequent signal field of the HE-PPDU based on a determination that the length field is not divisible by three, the one or more subsequent fields including a high-efficiency signal field (HE-SIG-A). - View Dependent Claims (17, 18)
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19. An apparatus of access point (AP) arranged for communicating with a plurality of high-efficiency (HE) stations, the apparatus comprising:
- memory; and
transceiver circuitry and processing circuitry coupled to the memory, the transceiver and processing circuitry configured to;configure a HE packet protocol data unit (HE-PPDU) to include; a legacy preamble comprising a legacy signal field (L-SIG) following legacy training fields, the L-SIG including at least a length field and a rate field; a subsequent signal field following the L-SIG, wherein first and second orthogonal frequency division multiplexing (OFDM) symbols immediately following the L-SIG use binary phase-shift keying (BPSK) modulation; and set a value for the length field that is not divisible by three for communicating with one or more of the HE stations, and transmit the HE-PPDU for receipt by one or more stations (STAs). - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28)
- memory; and
Specification