摘要:
Generally discussed herein are devices and methods for station and master station association. A device can include a memory to store instructions and channel condition data, and processing circuitry coupled to execute the instructions and configure the processing circuitry to decode first information provided in a first transmission from a first access point (AP), the first information indicating channel conditions of an entire bandwidth of the first AP including a primary channel and one or more secondary channels of the first AP, decode second information provided a second transmission from a second AP, the second information indicating channel conditions of an entire bandwidth of the second AP including a primary channel and one or more secondary channels of the second AP, and determine which of the first and second APs to associate with based on the first and second decoded information.
摘要:
Embodiments of an access point (AP), user station (STA), and method for spatial modulation orthogonal frequency division multiplexing (SM-OFDM) communication in a wireless network are generally described herein. The AP may transmit an SM-OFDM signal that comprises multiple OFDM signals. The SM-OFDM signal may be transmitted in channel resources that comprise multiple sub-carriers and the OFDM signals may be based at least partly on data symbols for used data portions of the sub-carriers. The used data portions may be based on a first portion of encoded bits and the data symbols for the used data portions may be based on a second portion of the encoded bits. In some examples, the used data portions of the sub-carriers may be different for at least some of the OFDM signals.
摘要:
Embodiments of an access point (AP), user station (STA), and method for variable length encoding are generally described herein. The AP may encode a block of input bits according to a parity check matrix to produce a low density parity check (LDPC) codeword. The parity check matrix may be included in a group of candidate parity check matrixes that includes a base parity check matrix and an expanded parity check matrix. An LDPC codeword length may be smaller for the base parity check matrix than for the expanded parity check matrix. The base parity check matrix may be used for the encoding when the LDPC codeword is transmitted for a legacy user station (STA). The expanded parity check matrix may be used when the LDPC codeword is transmitted for a non-legacy STA.
摘要:
A transmitter for spatial modulation in a high-efficiency wireless local-area network is disclosed. An apparatus is disclosed that comprises memory and circuitry coupled to the memory. The processing circuitry configured to split a data bitstream between an antenna bitstream and a symbol bitstream, encode the data bitstream into a plurality of orthogonal frequency-division multiplexing (OFDM) symbols from a signal constellation, encode the antenna bitstream into a plurality of antenna indices from a space constellation, map symbols of the plurality of symbols to a plurality of subcarriers of a channel and associate the symbols with an index of the plurality of indices. The processing circuitry may be configured to configure the access point for transmission of the symbols on the channel in accordance with an associated one of the antenna indices.
摘要:
Wireless devices, methods, and computer-readable media for transmitting and receiving beacon frames are disclosed. A master station is disclosed. The master station may include circuitry configured to operate in accordance with orthogonal frequency division multiple access (OFDMA) on a plurality of sub-channels and a primary channel. The circuitry may be further configured to assign a high-efficiency wireless local-area network (HEW) station to a sub-channel and transmit a legacy beacon on the primary channel with a first period. The circuitry may be further configured to transmit a HEW beacon on the sub-channel with a second period, wherein the second period is greater than the first period. The circuitry may be further configured to determine that the HEW station has data at the master station, and to transmit the HEW beacon on the sub-channel with an indication that the HEW station has the data. A HEW station is disclosed for receiving HEW beacons.
摘要:
Embodiments of a communication station and method for communicating in a wireless network are generally described herein. In some embodiments, the communication station may be to communicate longer-duration orthogonal frequency division multiplexed (OFDM) symbols on channel resources in accordance with an orthogonal frequency division multiple access (OFDMA) technique. The channel resources may comprise one or more minimum bandwidth units with each minimum band-width unit having a predetermined number of data subcarriers. The station may also configure the minimum bandwidth units in accordance with one of a plurality of subcarrier allocations for one of a plurality of interleaver configurations for communication of the longer-duration OFDM symbols. The longer-duration OFDM symbols may have symbols duration that is either 2× or 4× the standard OFDM symbol duration.
摘要:
Embodiments of a user station (STA) and methods for operating in a wireless communication network are generally described herein. In some embodiments, a STA detects that a signal, received on a wireless communication channel, was transmitted by a device operating with a bandwidth of a set of bandwidths. The set of bandwidths can include a 5 MHz bandwidth and a 10 MHz bandwidth. The STA may determine, responsive to the detecting, contents of a signal (SIG) field of the signal. The STA may apply a coexistence technique, such as refraining from transmitting STA transmissions, on the channel responsive to the detecting and based on information of the SIG field.
摘要:
Apparatuses, methods, and computer readable media are disclosed. A HE station may include circuity. The circuitry may be configured to: generate a HE packet with a short preamble format or a long preamble format, wherein the HE packet comprises one or more legacy signal (L-SIG) fields followed by one or more HE signal fields (HE-SIG) and an HE long-training field (HE-LTF); and configure the HE packet to indicate whether the HE packet is configured with the short preamble format or the long preamble format. The HE packet may be configured with the short preamble format or the long preamble format based on one from the following group: a symbol after the L-SIG fields, a L-SIG polarity of a repeated L-SIG, a number of times the L-SIG fields is repeated, or a length field of one of the one or more L-SIG fields.
摘要:
Logic may determine phase correction information from pilot tones. Logic may determine phase correction information from some of the pilot locations. Logic may process the shifting pilot tones for less than all of the pilot tones. Logic may process pilot tones at any location within orthogonal frequency division multiplexing (OFDM) packet. Logic may determine to process only pilot tones at the even or odd symbol indices or subcarriers. And logic may transmit a packet with a frame with a capabilities information field comprising an indication that a receiver may can process shifting pilot tones for phase tracking.
摘要:
A system and method are provided for implementing improved frequency estimation for wireless communications in support of a broader set of use cases including outdoor use cases and use cases that involve lower power transmissions with reduced signal-to-noise ratios for receivers particularly in systems configured according to the pending IEEE 802.11 ah standard. These systems and methods provide greatly improved frequency estimation over that prescribed for devices operating according other IEEE 802.11 standards, including the frequency estimator conventionally used in systems operated according to the IEEE 802.11n standards, and the proposed frequency estimator specified for IEEE 802.11ac systems. The disclosed techniques facilitate improved frequency estimation schemes that reuse of a short training field (STF) stored in memory, employ joint STF-long training field (LTF) estimation, use portions of a guard interval (GI), and create of multiple-phase estimates, with different symbol separation to improve a signal-to-noise ratio of the frequency estimate.