Abstract:
One exemplary embodiment exploits the non-uniformity of the interference at the downlink STA to maximize the full-duplex MU UL OFDMA transmission throughput performance. A first exemplary technology adjusts the transmit power of the uplink STAs so that the interference caused at the downlink STA is uniform (or substantially uniform) across OFDMA sub-channels. By doing so, the AP can optimize uplink transmission performance (e.g., aggregate link throughput) without degrading downlink transmission performance (e.g., in terms of the MCS used). A second exemplary technology uses OFDMA transmission for downlink, even if there is only one downlink STA, and adjusts the MCS for each downlink sub-channel based on the interference caused by UL STAs on each sub-channel. This allows the DL throughput to be maximized (and higher than a single 20 MHz OFDM transmission).
Abstract:
According to the present disclosure, a communication device configured to power on a main receiver to receive data from a network includes: a low power receiver configured to receive a wake up packet, including a preamble, from the network and oversample the wake up packet; a circuit arrangement including: a correlator configured to correlate the oversampled portion of the preamble; a delay and adder configured to take an output of the correlator, delay the output of the correlator, and add the output of the correlator back onto itself to produce a delay output; a peak detector configured to detect a peak pattern in the delay output; a demodulator configured to calculate a decoding threshold value to produce a demodulated data; and a packet parser configured to check the demodulated data for a data set in order to selectively output a nonzero signal to power on the main receiver.
Abstract:
Techniques for presenting communication by two or more stations in a WLAN environment are provided. Specifically, methods are presented, that when taken alone or together, provide a device or group of devices with an efficient way for bandwidth adaptation using echo cancellation.
Abstract:
This disclosure describes systems, methods, and devices related to multi-link operation. A device may configure a single N×N transmit (TX)/receive (RX) radio to a plurality of 1×1 TX/RX radios, where N is a positive integer. The device may monitor a first channel of a plurality of channels to determine its availability. The device may monitor a second channel of the plurality of channels to determine its availability. The device may identify a first control frame received from an access point (AP) multi-link device (MLD) on the second channel. The device may cause to send a second control frame to the AP MLD on the second channel. The device may configure back to a single N×N TX/RX radio to receive a data frame.
Abstract:
Methods and systems herein provide better downlink (DL) data throughput for cell-edge stations (CE STAs). The systems enable protection from a third-party collision during a wideband DL data transmission to the cell edge STA, when the wideband control frame, such as clear-to-send (CTS) or acknowledge (ACK), transmission from a cell edge STA cannot reach the AP. This process can be achieved by designing a new wideband control frame comprising: a legacy preamble sent over the primary 20 MHz channel that can be decoded by the legacy STAs, a new preamble sent over the primary 20 MHz channel that can be used to identify the new wideband control frame (this new preamble has the total signal bandwidth information for the rest of the packet following the new preamble); and duplicate legacy control packets set over the total bandwidth indicated in the new preamble (the legacy control packets can be decoded by the legacy STAs).
Abstract:
One embodiment is a WUR that not only awakens a Wi-Fi radio in a master device, but also awakens any other radio technology connected to the master device, either directly, or indirectly. These techniques are applicable to any of multiple technologies such as ZigBee, BT, cellular, BLE, Wi-Fi, etc., and in general any wireless communication technology. One embodiment allows one wake-up radio in the master controller to be connected other device(s) within a network, regardless of the radio technology the device(s) use, and allows wake-up of those device(s). One embodiment enables the WUR packet to target device categories/technologies. This extends its use beyond Wi-Fi, and does so in a managed manner which also allows for the WUR payload to be reconfigurable based on the preamble code and/or the information in the first part of the payload, and provides a way to aggregate WUR packets to activate device(s) by a WUR(s).
Abstract:
Techniques for presenting communication by two or more stations in a WLAN environment are provided. Specifically, methods are presented, that when taken alone or together, provide a device or group of devices with an efficient way for bandwidth adaptation using echo cancellation. Even more specifically, a narrow-bandwidth transmission can be interrupted in favor of a higher-bandwidth transmission upon one or more secondary channels becoming available or going quiet.
Abstract:
The 802.11ax Trigger Frame conveys information for solicited MU UL OFDM(A) transmission information. A full-duplex-capable AP can initiate another DL frame transmission(s) during the UL transmission. However, non-UL-solicited STAs may enter a low-power sleep state right after a Trigger Frame reception, and thus cannot receive the full-duplex DL transmission from the AP. Therefore, to enable OFDMA-based full-duplex communication, the AP needs to explicitly announce both scheduled UL and DL transmission(s) in the Trigger Frame.
Abstract:
One exemplary embodiment combines the concept of a LP-WUR (Low Power Wake Up Radio) and an improved service proxy to facilitate the low power service discovery operation. Specifically, a station (or in general any number of stations) can register to the proxy device for advertisement, with the station(s) then going into to the low power radio mode that uses the LP-WUR. The service proxy can advertise on behalf of the station(s) optionally without advertising a further schedule. If the service proxy receives a request from a neighboring device (e.g., another station) for the service of the registered station(s), the service proxy can then wake up one or more of the registered station(s) by transmitting a wakeup packet to the registered station so that the registered station can then advertise its service and schedule to connect with the neighboring device (e.g., the another station).
Abstract:
Mobile platform power management is an important problem especially for battery-powered small form factor platforms such as smartphones, tablets, wearable devices, Internet of Things (TOT) devices, and the like. A wake-up packet scheduler, a packet manager and a padding manager interact and cooperate to insert at least one wake-up packet on a sub-channel in a padding area after a data frame, the wake-up packet usable by a low-power wake-up radio in, for example, an IEEE 802.11 wireless communication environment.