Abstract: Various aspects related to frequency biasing to compensate for frequency variations caused by Doppler shift in V2V communication systems are described. In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus, e.g., a UE, may be configured to determine a velocity of the apparatus, and determine a frequency biasing adjustment based on the determined velocity of the apparatus. The apparatus may be further configured to communicate with UE based on an adjusted carrier frequency determined based on a carrier frequency and the determined frequency biasing adjustment. In some configurations, a driving environment of the apparatus maybe considered, and the frequency biasing adjustment is determined further based on the determined driving environment.

Abstract: Various aspects of the disclosure relate to limits for modulation and coding scheme (MCS) values. For example, a first set of limits (e.g., minimum and maximum limits) may be used for a first MCS table and a second set of limits may be used for a second MCS table. The disclosure also relates in some aspects to inter-device signaling that indicates which minimum and maximum limits for an MCS table are to be used for communication between the devices.

Abstract: Various aspects of the disclosure relate to the selection and use of modulation and coding scheme (MCS) values. For example, a first MCS table may be used for a first condition and a second MCS table used for a second condition. The disclosure relates in some aspects to inter-device signaling that indicates which MCS table is to be used for communication between the devices.

Abstract: Techniques for scheduling assignment (SA) transmissions in device-to-device (D2D) communications are described. A D2D user equipment (UE) may use a block of time resources for SA transmissions. A D2D UE may transmit an SA transmission relatively quickly after determining that D2D data is to be transmitted to another D2D UE, relative to having to wait for specified time resources to send an SA transmission. The D2D data may then be transmitted following the SA transmission, reducing latency for transmission of the D2D data. It may be desirable for vehicle-to-vehicle (V2V) transmissions to have a relatively low latency to provide data from one vehicle to another with sufficient time for a vehicle to take action while moving at relatively high rates of speed.

Abstract: Methods, systems, and devices for wireless communication are described. A wireless device may identify a configuration for transmitting ranging signals in a vehicle-based communication system. The configuration may identify a plurality of channels to be used for the ranging signals and timing for the ranging signals. The wireless device may transmit the configuration to a receiver and transmit ranging signals based at least in part on the configuration. The receiver may use the ranging signals to determine a distance between the receiver and the wireless device. The receiver may use the determined distance to update positioning information or operate a motor vehicle.

Abstract: Wireless communication systems and methods related to signaling line-of-sight (LOS) vehicle information for improving vehicle positioning accuracy are provided. A first vehicle receives, via a sensor, sensor data indicating a line-of-sight (LOS) vehicle. The first vehicle receives, via a wireless communication device, one or more ranging signals. The first vehicle determines that a first ranging signal of the one or more ranging signals is transmitted by the LOS vehicle. The first vehicle determines a position of the LOS vehicle based on at least the sensor data and the first ranging signal. Other aspects, embodiments, and features are also claimed and described.

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE), e.g., a vehicle in a group of platooning vehicles configured for wireless communications, may identify a travel direction of the group of platooning vehicles. The UE may identify a set of time-frequency radio resources allocated to the travel direction. The UE may perform inter-vehicle communications with one or more neighboring vehicles of the group of platooning vehicles using the set of time-frequency radio resources.

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE), e.g., a lead platooning vehicle configured for wireless communications, may determine a communication resource requirement for a group of platooning vehicles. The communication resource requirement may be based at least in part on a number of vehicles forming the group of platooning vehicles and a communication range of at least a portion of the vehicles. The UE may identify, based at least in part on the identified communication resource requirement, an assignment of time-frequency radio resources to use for inter-vehicle communications in the group of platooning vehicles. The UE may transmit an indication of the assignment of time-frequency radio resources to the group of platooning vehicles.

Abstract: An apparatus for wireless communication is provided. The apparatus determines, through sensors of a first vehicle, second-vehicle information associated with a second vehicle. In addition, the apparatus generates at least one safety message to include the determined second-vehicle information of the second vehicle. Further, the apparatus transmits the at least one safety message. The apparatus improves the performance/benefit of V2V communications technology by transmitting BSMs for other vehicles, including non-V2V vehicles without such V2V communications technology. Accordingly V2V vehicles will be able to better assess the traffic situation.

Abstract: A method for ranging includes randomly selecting a symbol in each of at least two successive sub-cycles of a ranging cycle, transmitting symbol IDs corresponding to the randomly selected symbols and a sequence ID, and transmitting a ranging signal with the sequence ID on each of the randomly selected symbols.

Abstract: A method for developing and reporting enhanced user equipment (UE) location information includes obtaining a global positioning system (GPS) location for a user equipment (UE), determining a location of at least one radio frequency (RF) antenna relative to the GPS location, developing a reference frame based at least in part on the location of the at least one RF antenna, determining a location of a structural element of the UE, and transmitting the GPS location, the location of the at least one RF antenna, and the location of the structural element of the UE.

Abstract: A method for ranging includes randomly selecting a symbol in each of at least two successive sub-cycles of a ranging cycle, transmitting symbol IDs corresponding to the randomly selected symbols and a sequence ID, and transmitting a ranging signal with the sequence ID on each of the randomly selected symbols.

Abstract: Wireless communication systems and methods related to signaling line-of-sight (LOS) vehicle information for improving vehicle positioning accuracy are provided. A first vehicle receives, via a sensor, sensor data indicating a line-of-sight (LOS) vehicle. The first vehicle receives, via a wireless communication device, one or more ranging signals. The first vehicle determines that a first ranging signal of the one or more ranging signals is transmitted by the LOS vehicle. The first vehicle determines a position of the LOS vehicle based on at least the sensor data and the first ranging signal. Other aspects, embodiments, and features are also claimed and described.

Abstract: In one aspect of this disclosure, control information and data are carried in the same subframe in order to reduce control overhead. A method, an apparatus, and a computer-readable medium for wireless communication are provided. The apparatus may be a first UE. The first UE determines a data block to be transmitted to a second UE. The first UE determines a first resource in a subframe for carrying the data block and determines a second resource in the subframe for carrying control information associated with transmitting the data block. The first UE transmits the data block and the control information to the second UE in a device-to-device communication channel on the determined first and second resources, respectively.

Abstract: Techniques are described for wireless communication at a wireless device. One method includes transmitting, during a TTI, a first message using a first MCS; and transmitting, during the TTI, a second message using a second MCS. The first message includes indications of a location, a heading, and a speed of the wireless device, and the second MCS is higher than the first MCS. Another method includes decoding a first message received during a TTI; performing a Doppler effect compensation for a second message based at least in part on the first message; and decoding the second message based at least in part on the Doppler effect compensation. The second message is also received during the TTI. The first message is decoded in accordance with a first MCS, and the second message is decoded in accordance with a second MCS, with the second MCS being higher than the first MCS.

Abstract: Wireless communications systems and methods related to transmission of platoon information. A first vehicle in a vehicle platoon obtains a first radio resource spanning a frequency channel and a time period for synchronous transmission with at least a second vehicle in the vehicle platoon. The first vehicle transmits, synchronously with at least the second vehicle, information associated with the vehicle platoon in the frequency channel and the time period of the first radio resource. The first vehicle may obtain the first radio resource by requesting a transmission request from a wireless communication device and receiving a transmission grant indicating the first radio resource. Alternatively, the first vehicle may obtain the first radio resource by selecting the first radio resource based on at least one of a sensing report or a resource reservation received from the second vehicle.

Abstract: Aspects of the present disclosure relate to wireless communications and, more particularly, to techniques for sharing sensor information. The techniques may be practiced, for example, in a vehicle to vehicle (V2V) environment, where frequency resources are mapped based on vehicle location(s).

Abstract: Aspects of the disclosure relate to beamforming from a vehicle user equipment (UE). In a first aspect, a beamform vector is selected based on beamform data received from a scheduling entity. Here, the beamform data corresponds to a path between a vehicle UE and a base station or another vehicle, and the beamform vector includes respective phases and amplitudes corresponding to each of a plurality of antennas of the vehicle UE. A beam is then generated in accordance with the beamform vector. In another aspect, a database of beamform data is maintained, and beamform data from the database is retrieved. Here, the retrieved beamform data corresponds to a particular location pair that includes a first location associated with a location of a vehicle UE, and a second location associated with a location of a base station or another vehicle. The beamform data is then transmitted to the vehicle UE.

Abstract: Various aspects of the present disclosure relate to vehicle-to-vehicle (V2V) data sharing. The sensor data collected from each vehicle may be divided into common information and detailed information. The common information is broadcasted to every other nearby vehicle. Based on the received common information other vehicles may express interest in some particular detailed information. Unicast and/or multicast sessions may be set up to share the detailed information with the interested vehicles.

Abstract: Aspects of the disclosure relate to a vehicle, or a device or system connected to the vehicle, that enables the vehicle to act as a base station in a wireless communication network. The vehicle includes an access interface transceiver configured to communicate with devices within its passenger cabin, and a backhaul interface transceiver configured to communicate with the wireless communication network. By acting as a base station, the vehicle can establish and provide connectivity between the devices in its passenger cabin and the wireless communication network via the access transceiver and backhaul transceiver.