Abstract: Aspects relate to wireless communication at a wireless communication device. The wireless communication device may include a transmitter configured to communicate using a first communication protocol, a receiver configured to communicate using a second communication protocol, different from the first communication protocol, a first antenna coupled to the transmitter, a second antenna coupled to the receiver and physically separated from the first antenna by a variable distance. The wireless communication device transmits, via the first antenna, a first transmission within a first frequency range, and receives via the second antenna, a second transmission within a second frequency range that overlaps the first frequency range.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless device may perform a listen-before-talk (LBT) procedure for a narrowband communication that provides time and frequency synchronization and/or scheduling information for an ultra-wideband (UWB) communication. The wireless device may transmit the narrowband communication in response to the LBT procedure being successful. The wireless device may transmit the UWB communication based at least in part on the time and frequency synchronization and/or scheduling information. Numerous other aspects are described.

Abstract: A system and method are disclosed that may allow for enhanced gain control for two radios. In an example method, a first radio may receive a wireless signal on a first frequency band, the wireless signal including at least a header and a payload. A first gain control operation may be performed based at least in part on information in the header of the wireless signal. A second radio may be determined to initiate a transmission on a second frequency coinciding with the first frequency band before reception of the wireless signal is completed, where the second radio is co-located with the first radio. A second gain control operation may be performed based at least in part on an expected interference associated with the transmission from the second radio, and one or more gain levels may be adjusted for reception of the wireless signal, based on the second gain control operation.

Abstract: A first device may establish, with a second device, a short-range wireless communications link. The first device may determine a time interval between each of a set of packets to be transmitted over a short-range wireless communications link with a second device. The first device may encode data with a bitrate that is based on the time interval. The first device may packetize the encoded data in the set of packets. The first device may transmit the set of packets to the second device or the short-range wireless communications link, and each of the set of packets may be separated by the time interval when transmitted.

Abstract: Systems, methods, and apparatus are described that provide for communicating coexistence messages over a multi-drop serial bus. A method performed at a device coupled to a serial bus includes receiving first coexistence information directed to a first device coupled to the serial bus, generating a first coexistence message representative of the first coexistence information, converting the first coexistence message to obtain a first datagram including the first coexistence information, and transmitting the first datagram to the first device over the serial bus. The first coexistence message may be configured for communication through a point-to-point data link. The first datagram may be configured according to a first protocol associated with the serial bus.

Abstract: A first device may establish, with a second device, a short-range wireless communications link. The first device may determine a time interval between each of a set of packets to be transmitted over a short-range wireless communications link with a second device. The first device may encode data with a bitrate that is based on the time interval. The first device may packetize the encoded data in the set of packets. The first device may transmit the set of packets to the second device or the short-range wireless communications link, and each of the set of packets may be separated by the time interval when transmitted.

Abstract: Systems, methods, and apparatus are described that provide for communicating coexistence messages over a multi-drop serial bus. A method performed at a device coupled to a serial bus includes receiving first coexistence information directed to a first device coupled to the serial bus, generating a first coexistence message representative of the first coexistence information, converting the first coexistence message to obtain a first datagram including the first coexistence information, and transmitting the first datagram to the first device over the serial bus. The first coexistence message may be configured for communication through a point-to-point data link. The first datagram may be configured according to a first protocol associated with the serial bus.

Abstract: A method, an apparatus, a transmitter component, and a computer program product for wireless communication are provided. The transmitter component may determine whether first information or second information is to be provided to a receiver component, wherein the first information includes a RAT identifier and the second information includes information regarding a transmit operation; and transmit a communication to the receiver component via a wireless coexistence interface between the receiver component and the transmitter component, wherein a particular portion of the communication is associated with a first value when the first information is to be provided, and wherein the particular portion is associated with a second value when the second information is to be provided. Numerous other aspects are provided.

Abstract: A method, an apparatus, a receiver component, and a computer program product for wireless communication are provided. The apparatus may receive a first portion of a communication from a transmitter component via a wireless coexistence interface between the receiver component and the transmitter component; determine at least one of a radio access technology (RAT) identifier or a transmit operation based at least in part on the first portion of the communication; and at least one of: process a second portion of the communication based at least in part on the RAT identifier; or perform the transmit operation. Numerous other aspects are provided.

Abstract: In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may establish a short-range communication link with a second wireless device using a first antenna of a plurality of antennas at the first wireless device. The apparatus may determine WLAN link quality information associated with each of the plurality of antennas. The apparatus may determine which one of the plurality of antennas to use for subsequent short-range communications with the second device based at least in part on the WLAN link quality information. The apparatus may perform subsequent short-range communications with the second device using the one of the plurality of antennas determined based at least in part on the WLAN link quality information.

Abstract: Methods, devices, and computer-readable media for wireless communication may involve techniques for managing multi-user (MU) operation when a device in a wireless network has coexisting radios. Such techniques may involve identifying a change in a multiple radio access technology (RAT) coexistence status of a first device, e.g., a change between a coexistence status that is not disruptive to MU communications and one that is disruptive. For a device communicating with a network using Wi-Fi, the change in the multiple RAT coexistence status may indicate a change between inactive Bluetooth (BT) communications and active BT communications concurrent with Wi-Fi communications. Based at least in part on the identified change in the multiple RAT coexistence status, a MU communications operation at a second device may be adjusted, for example, by disabling MU communication between the first and second devices over a first RAT when the first device changes to a coexistence status that may disrupt MU communications.

Abstract: A method, an apparatus, and a computer-readable medium for wireless communication are provided. In one aspect, an apparatus is configured to identify interference information associated with at least one traffic stream. The apparatus is further configured to transmit a message to an access point. The message includes a stream ID associated with the interference information and with the at least one traffic stream. The message includes the interference information, and the interference information includes an offset value and an interval/duration value.

Abstract: A method and apparatus for concurrent wireless communications on multiple channels of the same frequency band. A wireless device receives a first data signal via a first transceiver chain while concurrently initiating a transmission of a second data signal via a second transceiver chain of the wireless device. The wireless device suspends updates to one or more tracking loops of the first transceiver chain in response to initiating the transmission of the second data signal. The updates to the one or more tracking loops may be suspended prior to transmitting the second set of data from the second transceiver chain. The wireless device may subsequently resume updates to the one or more tracking loops of the first transceiver chain after completing the transmission of the second data signal.

Abstract: Methods, systems, and devices are described for wireless communication at a wireless device having collocated radios employing different radio access technologies (RATs). For example, a second radio of the wireless device may receive a first scheduling message. The first scheduling message may include information relating to timing, priority, transmission power, and radio capabilities. Using this scheduling message, a determination of whether a first radio employing a first RAT and the second radio employing a second RAT can transmit in parallel may be made. A first transmission on the first radio may be coordinated with a second transmission on the second radio based on the determination of whether the first radio and the second radio can transmit in parallel. A number of data units may be aggregated into an aggregate frame to be transmitted by the second radio. The number of data units may be based on the scheduling message.

Abstract: A method and apparatus for concurrent wireless communications on multiple channels of the same frequency band. A wireless device determines when a first transceiver chain of the wireless device is to receive a first data signal. The wireless device then transmits a second data signal via a second transceiver chain of the wireless device based at least in part on the determination. The wireless device further suspends the transmission of the second data signal in response to the determination that the first transceiver chain is to receive the first data signal.

Abstract: A coexistence interface for arbitrating wireless communications among a plurality of wireless radios of a wireless device. The coexistence interface includes a first set of inputs to receive first signals indicating transmit or receive activity of a first wireless radio of the wireless device. The coexistence interface includes a second set of inputs to receive second signals indicating transmit or receive activity of a second wireless radio of the wireless device. The coexistence interface further includes arbitration logic to prioritize transmit or receive activity of a third wireless radio of the wireless device based at least in part on the first and second signals.

Abstract: Methods, systems, and devices are described for supporting simultaneous (e.g., overlapping) data communications by a wireless communication device. More specifically, the described features generally relate to supporting SBS communications by providing mechanisms to help mitigate interference and/or coordinate medium access. One mechanism involves aligning the data communications to mitigate interference. Another mechanism involves using channel reservation signal (e.g., a clear-to-send-to-self (CTS2S) signal) to help maintain simultaneous medium access. Yet another mechanism involves setting a second backoff period for a second channel based at least in part on a first backoff period for a first channel in wireless devices.

Abstract: A method of transmitting a frame of data to a receiving (RX) device with multiple antennas. A transmitting (TX) device encodes a first portion of the data frame for a first MU-MIMO stream, and encodes a second portion of the data frame for a second MU-MIMO stream. The TX device then transmits the first encoded portion via the first MU-MIMO stream to a first antenna of the RX device, and transmits the second encoded portion via the second MU-MIMO stream to a second antenna of the RX device.

Abstract: System, methods and apparatus are described that facilitate transmission of data, particularly between two devices within an electronic apparatus. Each device can contend for control of a communications link by driving a data signal to a first voltage level. If the data signal or a clock signal changes before an arbitration time period has elapsed, one or more devices yield control of the communications link to another contender. The arbitration time period for each contender is different and indicates a priority of the message to be transmitted. A shorter arbitration time period indicates higher priority. Arbitration may commence after clock and data signals of the communications link remain in an idle or other predefined state for a minimum idle time. The minimum idle time may be different for different nodes and may be shorter for high priority messages or nodes.

Abstract: Methods, systems, and devices are described for wireless communication. A wireless device may identify an upcoming interference period, determine a receive end time based on when the interference period will begin to disrupt incoming messages, and transmit a scheduling outlook message to a transmitter to schedule around the interference in response to receiving a packet (request-to-send (RTS) or data). The wireless device may hash a receiver address (RA) associated with the packet exchange message such as a clear-to-send message or a block acknowledgement to make room for the scheduling outlook message. An example scheduling outlook field (in the place of the full RA field) may include a shortened RA, a number of supported spatial streams, a supported bandwidth, a set of tone allocation units (TAUs), a receive end time (or receive duration), and an interference level.