System and method for high efficiency wireless local area network communications
First Claim
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1. A method in a network component for transmitting a frame of two different fast Fourier transform (FFT) sizes, comprising:
- generating a frame, wherein the frame comprises orthogonal frequency-division multiplexing (OFDM) symbols in two different FFT sizes, wherein the frame comprises a preamble portion and a data portion, wherein the preamble portion comprises a first FFT size and the data portion comprises a second FFT size, wherein the first FFT size and the second FFT size are different, and wherein the data portion comprises a high efficiency wireless local area network (HEW) FFT size, wherein at least a portion of the preamble is modulated according to a first modulation scheme and at least a portion of the preamble is modulated according to a second modulation scheme, wherein the first modulation scheme is binary phase-shift keying (BPSK) modulation and the second modulation scheme is quadrature phase shift keying (QPSK) modulation, wherein the QPSK modulation provides auto-detection functionality, and wherein non-HEW devices stop decoding a HEW frame upon encountering the QPSK modulation; and
transmitting the frame during a single transmission opportunity.
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Abstract
System and method embodiments are provided for high efficiency wireless communications. In an embodiment, a method in a network component for transmitting a frame of two different fast Fourier transform (FFT) sizes includes generating a frame, wherein the frame comprises orthogonal frequency-division multiplexing (OFDM) symbols in two different FFT sizes, wherein the frame comprises a first portion and a second portion, wherein the first portion comprises a first FFT size and the second portion comprises a second FFT size; and transmitting the frame during a single transmission opportunity.
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Citations
28 Claims
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1. A method in a network component for transmitting a frame of two different fast Fourier transform (FFT) sizes, comprising:
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generating a frame, wherein the frame comprises orthogonal frequency-division multiplexing (OFDM) symbols in two different FFT sizes, wherein the frame comprises a preamble portion and a data portion, wherein the preamble portion comprises a first FFT size and the data portion comprises a second FFT size, wherein the first FFT size and the second FFT size are different, and wherein the data portion comprises a high efficiency wireless local area network (HEW) FFT size, wherein at least a portion of the preamble is modulated according to a first modulation scheme and at least a portion of the preamble is modulated according to a second modulation scheme, wherein the first modulation scheme is binary phase-shift keying (BPSK) modulation and the second modulation scheme is quadrature phase shift keying (QPSK) modulation, wherein the QPSK modulation provides auto-detection functionality, and wherein non-HEW devices stop decoding a HEW frame upon encountering the QPSK modulation; and transmitting the frame during a single transmission opportunity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A wirelessly enabled network component, comprising:
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a processor; and a computer readable storage medium storing programming for execution by the processor, the programming including instructions to; generate a frame, wherein the frame comprises orthogonal frequency-division multiplexing (OFDM) symbols in two different fast Fourier transform (FFT) sizes, wherein the frame comprises a preamble portion and a data portion, wherein the preamble portion comprises a first FFT size and the data portion comprises a second FFT size, wherein the first FFT size and the second FFT size are different, wherein the data portion comprises a high efficiency wireless local area network (HEW) FFT size, wherein at least a portion of the preamble is modulated according to a first modulation scheme and at least a portion of the preamble is modulated according to a second modulation scheme, wherein the first modulation scheme is binary phase-shift keying (BPSK) modulation and the second modulation scheme is quadrature phase shift keying (QPSK) modulation, wherein the QPSK modulation provides auto-detection functionality, and wherein non-HEW devices stop decoding a HEW frame upon encountering the QPSK modulation; and transmit the frame during a single transmission opportunity. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A method in a wireless network device, comprising:
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receiving a frame, wherein the frame comprises orthogonal frequency-division multiplexing (OFDM) symbols in two different FFT sizes, wherein the frame comprises a preamble portion and a data portion, wherein the preamble portion comprises a first FFT size and the data portion comprises a second FFT size, wherein the first FFT size and the second FFT size are different, and wherein the data portion comprises a high efficiency wireless local area network (HEW) FFT size, wherein at least a portion of the preamble is modulated according to a first modulation scheme and at least a portion of the preamble is modulated according to a second modulation scheme, wherein the first modulation scheme is binary phase-shift keying (BPSK) modulation and the second modulation scheme is quadrature phase shift keying (QPSK) modulation, wherein the QPSK modulation provides auto-detection functionality, and wherein non-HEW devices stop decoding a HEW frame upon encountering the QPSK modulation; decoding the first portion according to the first FFT size, wherein the first portion comprises a preamble; and decoding the second portion according to the second FFT size, wherein the second portion comprises a data portion.
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20. A wireless system, comprising:
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a transmitter; and a processor coupled to the transmitter, wherein the processor is configured to generate a frame, wherein the frame comprises orthogonal frequency-division multiplexing (OFDM) symbols in two different fast Fourier transform (FFT) sizes, wherein the frame comprises a preamble portion and a data portion, wherein the preamble portion comprises a first FFT size and the data portion comprises a second FFT size, wherein the first FFT size and the second FFT size are different, and wherein the data portion comprises a high efficiency wireless local area network (HEW) FFT size, wherein at least a portion of the preamble is modulated according to a first modulation scheme and at least a portion of the preamble is modulated according to a second modulation scheme, wherein the first modulation scheme is binary phase-shift keying (BPSK) modulation and the second modulation scheme is quadrature phase shift keying (QPSK) modulation, wherein the QPSK modulation provides auto-detection functionality, wherein non-HEW devices stop decoding a HEW frame upon encountering the QPSK modulation, and wherein the processor is further configured to cause the transmitter to transmit the frame during a single transmission opportunity. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28)
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Specification