摘要:
Example systems, methods, and devices for reusing one or more architectural building blocks of IEEE 802.11 n/ac/ah network, and allocating one or more Orthogonal Frequency-Division Multiple Access (OFDMA) tones such that the one or more OFDMA allocations have fixed locations which do not straddle DC are disclosed.
摘要翻译:用于重新使用IEEE 802.11n / ac / ah网络的一个或多个架构构建块的示例系统,方法和设备,以及分配一个或多个正交频分多址(OFDMA)音调,使得一个或多个OFDMA分配具有固定 公开了不跨越DC的位置。
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 separates a signal, into subchannels. The signal may be received on a wireless communication channel. The STA may detect a Short Training Sequence (STS) portion of a data packet on a subchannel of the subchannels. The STA may apply a coexistence technique, such as refraining from transmitting STA transmissions, on the channel responsive to the detecting.
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:
Logic may implement an orthogonal frequency division multiplexing (OFDM) system operating in the one gigahertz and lower frequency bands. Logic may detect new long training sequences that are differentially orthogonal to each other for a first bandwidth mode of operation such as a one megahertz mode as well as differentially orthogonal to half of the long training sequence for a second bandwidth mode of operation such as a two megahertz or greater mode. Logic may implement two or more long training sequences for the first bandwidth mode of operation to transmit information based upon the selection of the particular long training sequence for the transmission. Logic may implement a new acknowledgement packet comprising a short training sequence and a long training sequence without a signal field and without a payload. And logic may implement bandwidth detection logic to classify a transmission based upon orthogonal properties of the long training sequences.
摘要:
In a device or system, a total tone count is determined or selected for modulating a data payload. Two or more code words are interleaved into the data payload, and the data payload is transmitted on a channel of the device or system.
摘要:
Embodiments of a wireless device and method for transmitting a packet comprising one or more orthogonal frequency division multiplexed (OFDM) transmission symbols are generally described herein. In some embodiments, the wireless device may be configured to map data to active tones and map zeroes to nulled tones of a set of OFDM tones to generate an OFDM symbol comprising both the active and the nulled tones. The number of active and nulled tones may be based on a nulling factor. The OFDM symbol may be down-clocked to generate an OFDM transmission symbol for transmission over a reduced transmission bandwidth. Accordingly, low power may be used for very low data rate transmissions, which may be suitable for sensor devices.
摘要:
Embodiments of a high-efficiency WLAN (HEW) master station and method for communicating in accordance with a scheduled OFDMA technique on secondary channels are generally described herein. An access point is configured to operate as part of a basic-service set (BSS) that includes a plurality of high-efficiency WLAN (HEW) stations and a plurality of legacy stations. The BSS operates on a primary channel and one or more secondary channels. In accordance with some embodiments, the access point may communicate with one or more of the HEW stations on one or more of the secondary channels in accordance with a scheduled OFDMA communication technique when the primary channel is utilized for communication with one or more of the legacy devices.
摘要:
Embodiments of a master station and method for high-efficiency Wi-Fi (HEW) communication using traveling pilots are generally described herein. In some embodiments, the master station is arranged for communicating with a plurality of HEW and may be configured to transmit, during an initial portion of an HEW control period, a master-sync transmission that includes a multi-device HEW preamble arranged to signal and identify data fields for a plurality of scheduled HEW stations. The master station may transmit during the HEW control period the data fields with traveling pilots to the scheduled HEW stations. The master station may also receive data fields with traveling pilots transmitted by the scheduled HEW stations during the HEW control period. The traveling pilots may comprise pilot signals that are shifted among orthogonal-frequency multiplexed (OFDM) subcarriers during transmission of one or more of the data fields.
摘要:
The present invention relates to systems and methods that employ various mechanisms to selectively disable mobile device functionality. In general, mobile devices can be utilized to store personal and/or highly sensitive information such as bank account numbers, social security numbers, credit card numbers and the like. If the mobile device is lost or stolen, data stored within the device can be accessed by an unauthorized user; and, thus, any personal and/or highly sensitive information can be obtained. In order to mitigate unauthorized access, the subject invention provides a disabling component that communicates with the lost or stolen device to render data stored thereon inaccessible. Further, the data can be stored in local or remote locations to backup stored information, thereby creating a more robust and reliable method of storing information important to the device owner. These features provide enhancements over conventional mobile device security techniques.
摘要:
Embodiments may comprise an orthogonal frequency division multiplexing (OFDM) system operating in the 1 GHz and lower frequency bands. In many embodiments, physical layer logic may implement a new preamble structure with a new signal field. Embodiments may store the preamble structure and/or a preamble based upon the new preamble structure on a machine-accessible medium. Some embodiments may generate and transmit a communication with the new preamble structure. Further embodiments may receive and detect communications with the new preamble structure.