Dual-stream signal (SIG) field encoding with higher order modulation
AssigneeFuturewei Technologies, Inc.
InventorsJunghoon Suh, Osama Aboul-Magd, Kwok Shum Au
Life of this patent
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Abstract
Signal (SIF) field capacity can be significantly increased by encoding SIG field data using two streams in accordance with a space-time block code (STBC) encoding scheme. Dual-stream SIG field encoding allows for the utilization of higher order modulation schemes, such as quadrature phase-shift keying (QPSK), which increases SIG field capacity. Dual-stream encoded SIG fields are transmitted using an omnidirectional beam to allow mobile stations to accurately decode the SIG field irrespective of their spatial location.
Claims21
A method for communicating in a wireless network, the method comprising:
- encoding a portion of signal (SIG) field data in accordance with a single-stream encoding scheme to obtain a single-stream encoded SIG field;
- encoding another portion of the SIG field data in accordance with a space-time block code (STBC) encoding scheme to obtain a dual-stream encoded SIG field;
- and
- transmitting the single-stream encoded SIG field and the dual-stream encoded SIG field in an omnidirectional portion of a preamble of a frame.
An apparatus for transmitting data, the apparatus comprising:
- a processor;
- and
- a computer readable storage medium coupled to the processor and storing programming for execution by the processor, the programming including instructions to:
- encode a portion of signal (SIG) field data in accordance with a single-stream encoding scheme to obtain a single-stream encoded SIG field,
- encode another portion of the SIG field data in accordance with a space-time block code (STBC) encoding scheme to obtain a dual-stream encoded SIG field, and
- transmit the single-stream encoded SIG field and the dual-stream encoded SIG field in an omnidirectional portion of a preamble of a frame.
A method for communicating in a wireless network, the method comprising:
- generating, by a communications device, a legacy signal (SIG) field using a single transmit stream;
- generating, by the communications device, a very-high throughput (VHT) SIG field using two transmit streams;
- and
- transmitting the legacy SIG field and the VHT SIG field in an omnidirectional portion of a preamble of a frame.
An apparatus for transmitting data, the apparatus comprising:
- a processor;
- and
- a computer readable storage medium coupled to the processor and storing programming for execution by the processor, the programming including instructions to:
- generate a legacy signal (SIG) field using a single transmit stream,
- generate a very-high throughput (VHT) SIG field using two transmit streams, and
- transmit the legacy SIG field and the VHT SIG field in an omnidirectional portion of a preamble of a frame.
A method for wireless communication, the method comprising:
- generating very-high throughput (VHT) signal (SIG) field data and legacy SIG field data;
- encoding the legacy SIG field data in accordance with a single-stream encoding scheme to generate a legacy SIG field;
- modulating the legacy SIG field in accordance with a binary phase shift keying (BPSK) modulation scheme;
- encoding the VHT SIG field data in accordance with a space-time block code (STBC) encoding scheme to generate a VHT SIG field;
- modulating the VHT SIG field in accordance with a quadrature phase-shift keying (QPSK) modulation scheme;
- and
- transmitting the modulated legacy SIG field and the modulated VHT SIG field in an omnidirectional portion of a preamble of a frame over a network.
An apparatus for transmitting data, the apparatus comprising:
- a processor;
- and
- a computer readable storage medium coupled to the processor and storing programming for execution by the processor, the programming including instructions to:
- generate legacy signal (SIG) field data and very-high throughput (VHT) SIG field data;
- encode the legacy SIG field data in accordance with a single-stream encoding scheme to generate a legacy SIG field;
- modulate the legacy SIG field in accordance with a binary phase shift keying (BPSK) modulation scheme;
- encode the VHT SIG field data in accordance with a space-time block code (STBC) encoding scheme to generate a VHT SIG field;
- modulate the VHT SIG field in accordance with a quadrature phase-shift keying (QPSK) modulation scheme;
- and
- transmit the modulated VHT SIG field and the modulated legacy SIG field in an omnidirectional portion of a preamble of a frame over a network.
Dependencies are inferred from the claim text.