Abstract:
Methods and apparatus for processing frames in wireless networks is disclosed. In one implementation, the apparatus includes an antenna configured to (i) receive a first data frame, wherein the first data frame includes a field that identifies a parameter associated with a second data frame, and (ii) subsequent to receiving the first data frame, receive the second data frame. In one implementation, the apparatus further includes a processing module configured to (i) process the first data frame to identify the parameter associated with the second data frame, and (ii) based on identifying the parameter associated with the second data frame, process the second data frame.
Abstract:
A first network device including a receiver, a steering module, and a transmitter. The receiver is configured to receive a first signal from a second network device. The first signal is transmitted from the second network device using a first modulation system. The steering module is configured to generate a steering matrix based on the first signal. The transmitter is configured to transmit a second signal using the steering matrix to the second network device. The second signal is transmitted using a second modulation system. The first and second modulation schemes are selected from a group consisting of (i) a plurality of single carrier based modulation schemes and (ii) a plurality of orthogonal frequency division multiplexing based modulation schemes. The second modulation system is different from the first modulation system.
Abstract:
Devices, systems, methods, and other embodiments associated with phase based transformation of repeated signals are described. In one embodiment, an apparatus includes duplication logic configured to duplicate a string of data to form a duplicate string of data. Transformation logic is configured to modify phases associated with the string of data to generate a modified string of data. Signal generation logic is configured to generate a signal for wireless transmission where the signal having at least the modified string of data and the duplicate string of data.
Abstract:
A network device including a receiver module, a first channel estimate module, and a frequency equalizer. The receiver module is configured to receive a packet wirelessly transmitted over a channel to the network device, where the packet comprises a signal field, and where the signal field (i) comprises bits, or (ii) has corresponding sub-carriers. The first channel estimate module is configured to, (i) based on the signal field, perform multiple determinations, where each of the determinations indicates whether a respective one of the bits or a respective one of the sub-carriers has been modulated with a first predetermined value or a second predetermined value, and (ii) based on the determinations, output a first estimate of the channel. The frequency equalizer is configured to (i) receive a first signal including the packet, and (ii) equalize the first signal based on the first channel estimate.
Abstract:
Apparatus having corresponding methods and computer-readable media comprise: a wireless receiver configured to scan for a beacon in one or more of a first plurality of predetermined wireless channels, wherein each of the first plurality of predetermined wireless channels has the same carrier frequency in a plurality of different geographical regions; and a controller configured to identify, based on a beacon scanned by the wireless receiver in one or more of the first plurality of predetermined wireless channels, a first geographical region of the plurality of different geographical regions, wherein the controller is further configured to select a second plurality of wireless channels associated with the first geographical region, wherein the wireless receiver is further configured to scan for a beacon in one or more of the second plurality of wireless channels selected by the controller.
Abstract:
The present disclosure includes systems and techniques relating to wireless local area network devices. Systems and techniques include accessing a data stream intended for transmission to a single wireless communication device, multiplexing the data stream onto two or more radio pathways to produce a data packet, operating the two or more radio pathways to respectively use two or more groups of orthogonal frequency division multiplexing (OFDM) subcarriers to generate two or more different portions of the data packet, the two or more groups of OFDM subcarriers being respectively assigned to two or more frequency bands, and transmitting the data packet to the single wireless communication device by concurrent transmissions of the two or more different portions via the two or more frequency bands.
Abstract:
Some of the embodiments provide a method comprising during a first time period, receiving, by a first user equipment, (i) a first signal intended for the first user equipment, (ii) a second signal intended for a second user equipment, and (iii) a noise signal having a first noise power level; during a second time period, receiving, by the first user equipment, the noise signal having the first noise power level; during the first time period and the second time period, propagating the noise signal through a plurality of components of the first user equipment such that the noise signal is scaled by the plurality of components, wherein subsequent to the scaling of the noise signal, the noise signal has a second noise power level; and estimating the second noise power level.
Abstract:
An access point including a transceiver having first and second physical layers to communicate at first and second data rates, respectively. The transceiver receives a request from a first client station to reserve first or second sub-channel of a channel for transmitting data at the first or second data rate. In response to receiving the request from the first client station, the transceiver transmits a response to allow the first client station to transmit data and prevent a second client station from transmitting data while the first client station transmits data to the access point. In response to the first client station receiving the response, the first physical layer receives data from the first client station without interference from the second client station.
Abstract:
A wireless network includes a first station and a second station. The first station includes a media access control circuit configured to provide a frame of data to be transmitted on a communication channel, and a physical layer device configured to receive the frame of data and transmit the frame of data on the communication channel. The frame of data is transmitted according to a first short interframe space (SIFS) or a second SIFS, and the first SIFS has a duration that is different from that of the second SIFS. The second station is configured to determine whether the first station transmitted the frame of data according to the first SIFS or the second SIFS and transmit a response to the frame of data based on the determination of whether the first station transmitted the frame of data according to the first SIFS or the second SIFS.
Abstract:
First gain and phase information corresponding to an estimate of a communication channel from a second communication device to a first communication device are determined at the first communication device. First transmit beamforming information are calculated using the first gain and phase information at the first communication device, wherein the first transmit beamforming information corresponds to transmit beamforming by the second communication device via multiple antennas. The first transmit beamforming information are converted, at the first communication device, to second gain and phase information corresponding to the estimate of the communication channel. Feedback is generated at the first communication device using the second gain and phase information, the feedback to be transmitted to the second communication device.