Abstract: A network device including a first transceiver and a second transceiver. The first transceiver is configured to receive, in accordance with a first wireless protocol, first data during a first time period, and transmit, in accordance with the first wireless protocol, second data during a second time period. The second transceiver is configured to receive, in accordance with a second wireless protocol, a block of packets during the first time period in which the first transceiver receives the first data. The second wireless protocol is different from the first wireless protocol. Subsequent to receiving all packets in the block of packets, the second transceiver is configured to transmit, in accordance with the second wireless protocol, a single acknowledgement during the second time period in which the first transceiver transmits the second data. The single acknowledgement is configured to indicate receipt of all the packets in the block of packets.

Abstract: Systems and techniques relating to wireless communications are described. A described technique includes identifying devices to receive spatially steered data frames during a transmission opportunity (TXOP), the data frames being included in a multi-user frame; transmitting, during the TXOP, request to send (RTS) information to the identified devices; receiving clear to send (CTS) responses from the identified devices; determining a bandwidth configuration for the multi-user frame based on the CTS responses; and transmitting, during the TXOP, the multi-user frame to the identified devices in accordance with the bandwidth configuration. The bandwidth configuration can indicate one or more frequency bands that are available during at least a portion of the TXOP.

Abstract: A system including a first preamble generation module, a second preamble generation module, and a packet generation module. The first preamble generation module is configured to generate a first preamble. The first preamble includes a first training field to train receivers operating at a first data rate. The second preamble generation module is configured to generate a second preamble. The second preamble includes a second training field to train receivers operating at a second data rate. The second data rate is different than the first data rate. The packet generation module is configured to generate a packet. The packet includes the second preamble followed by the first preamble in response to the packet being transmitted at the first data rate, or the first preamble followed by the second preamble in response to the packet being transmitted at the second data rate.

Abstract: A set of channels is scanned, each channel in the set having a first bandwidth. When it is determined that one or more channels in the set of channels are not being utilized by one or more other wireless communication systems, a channel not being utilized is selected as a primary channel for a wireless communication system. When it is determined that all channels in the set of channels are being utilized by one or more other wireless communication systems, (i) a channel in the set that is aligned with a primary channel of another wireless communication system is selected as the primary channel, or (ii) a channel in the set that overlaps with a secondary channel of another wireless communication system is selected as the primary channel, where the secondary channel of the other wireless communication system has a bandwidth greater than the first bandwidth.

Abstract: A method in a communication network includes receiving a data unit that includes a request to transmit an aggregate data unit to a communication device, and, in response to receiving the data unit, generating an aggregate data unit for transmission to the communication device, where the aggregate data unit includes a plurality of component data units, each having a respective media access channel (MAC) header, and a duration of the aggregate data unit is determined using a parameter negotiated with the communication device.

Abstract: A data portion of a physical layer (PHY) data unit is generated to include a service field that consists of eight or less bits. When it is determined that the PHY data unit is to be generated according to a first mode of operation of a long range communication protocol, the PHY data unit is generated according to a first format to include the data portion. When it is determined that the PHY data unit is to be generated according to a second mode of operation of the long range communication protocol, the PHY data unit is generated according to a second format to include the data portion, including using a slower clock rate as compared to the first format. The second mode of operation provides longer range communications as compared to the first mode of operation.

Abstract: A method of generating packets for transmission in a wireless communication system, wherein each packet includes a SIG field that includes a first SIG subfield, includes generating a data packet and a null data packet. Generating the data packet includes generating information bits of the first SIG subfield of the data packet and generating the data portion of the data packet. The information bits of the first SIG subfield of the data packet indicate, to a receiving device, a length corresponding to a data portion of the data packet. Generating the null data packet includes generating information bits of the first SIG subfield of the null data packet. The information bits of the first SIG subfield of the null data packet indicate, to a receiving device, a first physical layer (PHY) parameter value associated with the null data packet. The first PHY parameter value is not a length value.

Abstract: A system including a midamble detection module and a processing module. The midamble detection module is configured to detect a midamble of a packet transmitted via a channel, where the packet includes (i) a preamble, (ii) the midamble, and (iii) a plurality of data fields, where the preamble includes (i) a first short training field, (ii) a first long training field, and (iii) a signal field, where the midamble includes (i) a second short training field and (ii) a second long training field, and where the midamble follows the preamble and is between two or more of the data fields. The processing module is configured to determine that the channel is busy in response to detecting the midamble in the packet.

Abstract: A system including a nonce module and an encryption module. The nonce module is configured to generate a nonce for each packet of a plurality of packets to be encrypted using a first temporal key. Each nonce includes a packet number that is different than packet numbers associated with other nonces generated by the nonce module for the plurality of packets. The packet number is greater than N bits in length, where N is an integer greater than 40. The encryption module is configured to encrypt, without reusing a value of the packet number, more than 2(N?1) packets of the plurality of packets using (i) the first temporal key and (ii) the nonces corresponding to the more than 2(N?1) packets using Galois/Counter Mode encryption.

Abstract: Embodiments of the present invention provide a method that includes receiving, by a traffic arbiter, a predetermined time-slot allocation of one or more uplink time slots and/or one or more downlink time slots for a first wireless media access control (MAC) configured to operate within a first wireless transmission system. The method also includes determining, by the traffic arbiter, whether to grant a second wireless MAC, configured to operate within a second wireless transmission system, permission to transmit or receive based at least in part on the predetermined time-slot allocation.

Abstract: Systems, methods, and other embodiments associated with wireless coexistence through antenna switching are described. According to one embodiment, a method includes selecting one or both of a first transceiver and a second transceiver for connection to an antenna, based, at least in part, on the operating mode of the first transceiver and the second transceiver. The method includes connecting the selected transceiver(s) to the antenna, such that the selected transceiver(s) is enabled to communicate on the antenna and any transceiver(s) not selected is not able to communicate on the antenna.

Abstract: A method includes receiving a data unit that includes a signal (SIG) field and a data field. The SIG field provides information for interpreting the data field. The method also includes detecting a first symbol constellation rotation of at least a first orthogonal frequency division multiplexing (OFDM) symbol in the SIG field of the data unit, determining, based at least in part on the detected first symbol constellation rotation, a number of information bits per OFDM symbol in the SIG field of the data unit, processing the SIG field of the data unit according to the determined number of information bits per OFDM symbol in the SIG field, and processing the data field of the data unit according to the information for interpreting the data field as provided in the SIG field of the data unit.

Abstract: A method for generating signals to be transmitted within a BSS channel, where a set of component channels is collectively coextensive with the BSS channel, includes determining that a first duplicate, in frequency, of a low bandwidth mode data unit will be located at an edge of the BSS channel. Each duplicate includes OFDM tones and has a bandwidth less than the narrowest channel of the component channels. The OFDM tones in each duplicate include one or more data tones, one or more pilot tones, and one or more guard tones. The method also includes generating a transmission signal comprising the duplicates, at least in part by scaling down at least one data tone, and/or zeroing out at least one data tone, of the first duplicate in response to determining that the first duplicate will be located at an edge of the BSS channel.

Abstract: Enhancements are provided to lower power consumption in a wireless communication device. A traffic indicator message is designated to be positioned at or near a first burst to be transmitted to a subscriber station. Further, a clock signal provided to a decoder in the subscriber station has a variable frequency, the frequency being chosen based on the nature of the data to be decoded. Data needing immediate decoding is processed with a high speed clock. Other data are processed with a lower speed clock to reduce power consumption. Also, control information that is demodulated when the subscriber station is in sleep mode is batch processed when the subscriber station becomes active again.

Abstract: A method of generating packets for transmission in a wireless communication system. The method comprises generating a data packet and generating a null data packet. Generating the data packet includes generating a data packet signal (SIG) field including a first data packet SIG subfield indicating a first physical layer (PHY) parameter to a receiving device. Generating the data packet also includes generating a data field. Furthermore, generating the null data packet includes generating a null data packet SIG field. The null data packet SIG field includes a first null data packet SIG subfield indicating a second PHY parameter to a receiving device. The data packet SIG field excludes any SIG subfield indicating the second PHY parameter to a receiving device, and (ii) the null data packet SIG field excludes any SIG subfield indicating the first PHY parameter to a receiving device.

Abstract: An available frequency band for communication is determined, and a subset of communication channels from possible communication channels within the available frequency band is determined based on the available frequency band. A communication channel is selected from the subset of communication channels, and the selected communication channel is utilized to communicate with one or more communication devices.

Abstract: The present disclosure includes systems and techniques relating to wireless communications. A described technique, for example, includes transmitting a multi-user frame, in a frequency band, that concurrently provides data via spatially steered streams to a group of wireless communication devices; monitoring for acknowledgements, in the frequency band, to respective portions of the multi-user frame; detecting a lack of reception of an expected acknowledgement from a first device of the wireless communication devices; and transmitting, based on the lack of reception of the expected acknowledgement, a signal in the frequency band to prevent a transmission from a wireless communication device that is separate from the group of wireless communication devices, and to control transmission of an acknowledgement from a second device of the wireless communication devices.

Abstract: An access point including a beacon module that determines a beacon interval and that defines a first portion and a second portion of the beacon interval during which the access point operates in a normal mode and a power save mode, respectively. On receiving a communication from a client station during the first portion, a control module does not transition the access point from the normal mode to the power save mode at an end of the first portion. If the communication is not received during the first portion, the control module transitions the access point from the normal mode to the power save mode at the end of the first portion and from the power save mode to the normal mode at an end of the second portion. A duration of the second portion is less than a scan time of the client station.

Abstract: A network device including a first transceiver and a second transceiver. The first transceiver is configured to receive, in accordance with a first wireless protocol, first data during a first time period, and transmit, in accordance with the first wireless protocol, second data during a second time period. The second transceiver is configured to receive, in accordance with a second wireless protocol, a block of packets during the first time period in which the first transceiver receives the first data. The second wireless protocol is different from the first wireless protocol. Subsequent to receiving all packets in the block of packets, the second transceiver is configured to transmit, in accordance with the second wireless protocol, a single acknowledgement during the second time period in which the first transceiver transmits the second data. The single acknowledgement is configured to indicate receipt of all the packets in the block of packets.

Abstract: Systems and techniques for wireless communication are described.