Abstract: Systems, methods, and devices for communicating short control frames are described herein. In some aspects, a method of wireless communication includes generating a control frame comprising a contention free end (CF-end) frame, the CF-end frame comprising a physical layer preamble having a type field, the type field including an indicator indicating the CF-end frame is a null data packet (NDP). The method further includes transmitting the control frame.

Abstract: Methods and apparatus for wireless communication in an IEEE 802.11 wireless communication system including legacy and high-efficiency wireless (HEW) devices are provided. In one aspect, a method for wireless communication in an IEEE 802.11 wireless communication system including legacy and high-efficiency wireless (HEW) devices includes determining a first time interval for communication according to a HEW protocol. The method further includes transmitting, according to a legacy protocol, a first communication at least partially protecting reception of communications during the first time interval. Another method includes receiving a first communication announcing a second communication. The method further includes determining a first time interval for communication according to a HEW protocol. The method further includes transmitting, according to a legacy protocol, the second communication for at least partially protecting reception of communications during the first time interval.

Abstract: Certain aspects of the present disclosure propose computer-program products for discovery of source or sink devices and their capabilities, prior to establishing a link such as a tunneled direct link setup (TDLS) link. The established link may be used for different applications such as Wi-Fi Display session with the desired source or sink device. The proposed computer-program product may also be applied to devices that utilize peer to peer communication.

Abstract: Methods, systems, and devices are described for enhanced network utilization between an access point and a number of wireless stations. A station (STA), following a transmit opportunity (TXOP), may determine a utilization of the TXOP. Based on the determination, the STA may adjust a delay time for a subsequent transmission. The adjustment of the delay time may include increasing an initial contention window (CW), increasing a backoff value, and/or increasing a number of backoffs for TXOPs following an underutilized TXOP. The increased delay time may result in, on average, increased backoff times in such situations. The delay time may be reduced to a minimum delay time following a certain number of TXOPs that more fully utilize the TXOP. Utilization of the TXOP may be determined based on an amount of time used for the TXOP relative to a TXOP limit that may be set by an access point.

Abstract: Certain aspects of the present disclosure provide techniques and apparatus for using channel state information (CSI) feedback for multiuser multiple-input multiple-output (MU-MIMO) transmission. For certain aspects, a method of wireless communications generally includes generating a training frame and transmitting the generated training frame. The training frame typically includes first information identifying a group of one or more apparatuses and second information indicating whether each of the apparatuses in the group is to determine at least one characteristic of a channel. For other aspects, a method of wireless communications generally includes receiving a request at an apparatus and transmitting, in response to the received request, a packet using frame aggregation, wherein two or more frames are transmitted in a single transmission using a single header.

Abstract: A method for wireless communications is disclosed that includes receiving a plurality of requests to transmit data from a plurality of apparatuses; determining resource allocation for a set of apparatuses in the plurality of apparatuses, wherein the determination is based on the plurality of requests; and transmitting a message comprising the resource allocation to the set of apparatuses to permit data transmission. Another method for wireless communications is disclosed that includes contending for access to a medium based on a request, by an apparatus, with a plurality of other apparatuses; receiving a message, the message comprising a resource allocation based on requests from the apparatus and the other apparatuses, wherein the resource allocation permits data transmission from the apparatus and some of the other apparatuses; and transmitting data by the apparatus based on the message. Apparatuses for performing the methods are also disclosed.

Abstract: There lies a challenge to develop a technique of effectively establishing a direct communication link between client devices in a communication network. In some implementations, an associated STA is a client device which is associated with a particular access point (AP). A non-associated STA is a client device which is not associated with the AP. A tunneled probe request may be transmitted by an associated STA through the AP to be broadcast to other associated STAs. In some implementations, an active scan may be combined with a tunneled probe request in order to establish a communication link between an associated STA and a non-associated STA.

Abstract: A method includes wirelessly communicating with one or more stations that are partitioned into one or more groups. The method also includes generating a message that identifies one or more time periods during which each station of a first group of the one or more groups is permitted to contend for a communication channel or restricted from contending for the communication channel. The method further includes transmitting the message.

Abstract: Certain aspects of the present disclosure generally relate to wireless communications and, more particularly, to protecting control frames with power-related subfields. One example apparatus for wireless communications generally includes a processing system configured to generate a control frame comprising one or more power-related subfields and an integrity check value calculated based, at least in part, on the one or more power-related subfields and a transmitter configured to transmit the control frame. In aspects, a power management (PM) subfield, an end-of-service-period (EOSP) subfield, a more data (MD) subfield, or a traffic identifier (TID) subfield can be added to a group of additional authentication data (AAD) and the integrity check value is calculated based on the group of AAD.

Abstract: A particular method includes transmitting a frame from a station to an access point. The frame includes a beacon sequence number related to a configuration of the access point. The method also includes, in response to transmitting the frame, receiving an update frame from the access point. The update frame indicates at least one change in the configuration of the access point.

Abstract: Methods, systems, and devices are described for efficient use of transmit opportunities (TXOPs) through adjustment of contention window backoff time values to compensate for one or more TXOPs that may exceed a TXOP limit. A contention window value may be increased, for example, to provide other devices in the network with a fair opportunity for network access based at least in part on one or more TXOPs that exceed the TXOP limit. Allowing one or more transmissions to exceed a TXOP limit may provide enhanced efficiency as compared to having multiple transmissions.

Abstract: Systems and methods for wireless communication are disclosed. In one aspect an access point includes a processor configured to generate a message identifying a time period in which the access point will enter a power save mode and ignore a packet sent from any wireless station, and a transmitter connected to the processor and configured to transmit the message to one or more wireless stations associated with the access point.

Abstract: Systems, methods, and devices for wireless communication are described herein. In some aspects, a method includes determining one or more classes of compatible transmissions from one or more wireless devices. The method further includes defining scheduled time slots for each of the one or more classes. The method further includes defining a channel access procedure associated with each of the scheduled time slots. The method further includes accessing a wireless medium during an associated scheduled time slot according to the channel access procedure by one or more of the wireless devices.

Abstract: Certain aspects of the present disclosure generally apply to a wireless local area network (WLAN) where an access point (AP) has data to send to multiple stations (STAs). By using the Downlink Spatial Division Multiple Access (DL-SDMA) technique, the AP may send data at the same time towards multiple STAs. Certain aspects of the present disclosure provide techniques and apparatuses for detecting that a multiuser multiple-input multiple-output (MU-MIMO) transmission has suffered a collision and to adapting a contention window (CW) size for a backoff counter applied to a subsequent MU-MIMO transmission.

Abstract: Systems and methods for low overhead paging in a wireless communications network are described herein. In some aspects, an apparatus for wireless communication includes a receiver and a processor. The receiver receives a request from a first device. The request indicates a first period of a plurality of periods corresponding to a periodicity for transmitting paging messages. The processor assigns the first device to a group scheduled to receive paging messages at most every first period based on the request and determines a start time for transmitting paging messages to the first device based on schedules for transmitting paging messages to a plurality of other devices. In other aspects, an apparatus for wireless communication includes a processor and memory. The processor derives an information sub-unit from an information unit associated with a paging message, compresses the information sub-unit, and generates a second information unit associated with the method of compression.

Abstract: Methods and apparatus for wireless communication are provided. In one aspect, a method for wireless communication includes generating a clear to send message comprising a specific medium access control address (MAC) identifiable by a first subset of a plurality of wireless devices as instructing not to update an associated network allocation vector according to a duration field in the clear to send message. The specific MAC address is not identifiable by a second subset of the plurality of wireless devices such that the second subset of the plurality of wireless devices are instructed to update an associated network allocation vector according to the duration field. The method further includes transmitting the message, thereby reserving wireless communication access for the first subset of the plurality of wireless devices. The specific MAC address is included in one or more address fields of a medium access control header of the message.

Abstract: Certain aspects of the present disclosure provide techniques and apparatus for efficiently managing groups of stations (STAs) receiving simultaneous transmissions in a multiuser multiple-input multiple-output (MU-MIMO) scheme. One example method generally includes; for a first apparatus in a number of groups of apparatuses, allocating a first spatial stream position for each of at least one first group in the number of the groups; and transmitting a first unicast message to the first apparatus, wherein the first unicast message comprises an indication of the allocated spatial stream position for each of the at least one first group and, for each group in the number of the groups, an indication of a membership status, in the group, of the first apparatus.

Abstract: Systems, methods, and devices for communicating a compressed beacon are described herein. In some aspects, a method of communicating in a wireless network. includes creating a shortened network identifier having a first length from a full network identifier having a second length. The first length is shorter than the second length. The method further includes generating a compressed beacon including the shortened network identifier. The method further includes transmitting, at an access point, the compressed beacon.

Abstract: A method and apparatus are disclosed to establish and verify a Tunneled Direct Link Setup (TDLS) link between a first wireless device and a second wireless device. In some embodiments, the first wireless device may receive a TDLS setup confirmation message from the second wireless device. Based on the TDLS setup confirmation message, the first wireless device may transmit a TDLS verification message to the second wireless. The TDLS link may be verified when the second wireless device receives the TDLS verification message. In some embodiments, when the TDLS verification message is not received by the second wireless device, a TDLS check message may be sent by the second wireless device to the first wireless device. The first wireless device may transmit a TDLS check complete message based on the TDLS check message. The TDLS link may be verified when the second device receives the TDLS check complete message.

Abstract: Detection and reporting techniques for collisions between transmitters of two different radio access technologies (RATs) transmitting in a shared radio frequency spectrum band is described. The collision may occur following a listen-before-talk procedure but prior to transmission of data, and may not affect the reception of the transmitted data. Collisions may be detected using for example, energy sensing, preamble or ready-to-send (RTS) signal detection, or unsuccessful decoding of all or part of a channel reservation signal. A transmitting device may determine a collision has occurred by detecting an energy level during a preamble transmission is greater than a threshold level or by detecting that an energy level during a transmission gap of a time-domain energy pattern is above a threshold level. A receiving device, such as a user equipment (UE), that detects the collision may report the collision to the transmitter.