GEOMETRY-BASED LISTEN-BEFORE-TALK (LBT) SENSING FOR TRAFFIC-RELATED PHYSICAL RANGING SIGNALS

    公开(公告)号:WO2022104308A1

    公开(公告)日:2022-05-19

    申请号:PCT/US2021/071889

    申请日:2021-10-14

    Abstract: Techniques described herein provide for the efficient usage of an RF channel for PRS transmissions by performing LBT sensing for a group of one or more vehicles (e.g., V2X vehicles) in a predetermined area by using an RSU. The RSU can determine a sequence in which an order for each vehicle in the group to transmit a respective PRS is defined, and provide the sequence to the group. The RSU may further perform the LBT functionality by listening to availability on the RF channel and, when the channel becomes available, the RSU can initiate this sequence by sending an initial PRS. This LBT sensing for a group can provide far more efficient usage of the RF channel than if LBT functionality were performed by each divisional vehicle.

    TRANSMISSION METHODS TO HANDLE VULNERABLE SYMBOLS

    公开(公告)号:WO2020168240A1

    公开(公告)日:2020-08-20

    申请号:PCT/US2020/018361

    申请日:2020-02-14

    Abstract: Methods, systems, and devices for wireless communications are described. A first device may identify that a first set of transmission resources in a transmission time interval (TTI) has a higher priority at a second device than a second set of transmission resources in the TTI. The first device may identify that a message is to be transmitted from the first device to the second device via the TTI and process the message into a bit sequence based on the identification of the second set of transmission resources in the TTI, where the processing increases a likelihood that systematic bits of the message are received at the second device despite presence of the second set of transmission resources in the TTI. The first device may transmit the bit sequence to the second device via the TTI.

    PATH LOSS ESTIMATION
    3.
    发明申请

    公开(公告)号:WO2020146644A1

    公开(公告)日:2020-07-16

    申请号:PCT/US2020/012947

    申请日:2020-01-09

    Abstract: Methods, systems, and devices for wireless communications are described. Examples may include a receiving wireless device located in a first geographic zone receiving multiple signals from one or more transmitting wireless devices. The receiving wireless device may determine based on the received signals that the one or more transmitting devices are located in a second geographic zone. The receiving wireless device may determine configured transmit power information for each of the signals received from the transmitting wireless devices located in the second geographic zone. The receiving wireless device may estimate a path loss of wireless communications between the first geographic zone and the second geographic zone based on the configured transmit powers received in the signals. The receiving wireless device may communicate within the second geographic location based on the estimated path loss between the first geographic region and the second geographic region.

    VEHICLE RANGING AND POSITIONING
    5.
    发明申请

    公开(公告)号:WO2019140234A1

    公开(公告)日:2019-07-18

    申请号:PCT/US2019/013253

    申请日:2019-01-11

    Abstract: Methods, systems, and devices for ranging are described. A multi-phase distributed ranging technique includes transmitting and receiving vehicle information messages during a first time interval, where the vehicle information messages include at least a vehicle identifier and resource information. The multi-phase technique further includes transmitting and receiving ranging signals during a second time interval, and determining times of arrival of received ranging signals. A centralized ranging technique includes receiving resource assignments from an access point, transmitting ranging signals according to the resource assignments, and determining times of arrival of received ranging signals.

    MONITORING PERIODS FOR DEVICE-TO-DEVICE SYNCHRONIZATION SIGNALS
    7.
    发明申请
    MONITORING PERIODS FOR DEVICE-TO-DEVICE SYNCHRONIZATION SIGNALS 审中-公开
    监控设备同步信号的时间

    公开(公告)号:WO2016014219A1

    公开(公告)日:2016-01-28

    申请号:PCT/US2015/038305

    申请日:2015-06-29

    CPC classification number: H04W56/00 H04W4/70 H04W56/002 H04W72/04

    Abstract: Methods, systems, and devices are described for determining a monitoring schedule for device-to-device (D2D) synchronization signals. A synchronization cycle may be determined that includes a plurality of monitoring periods. The monitoring periods may be a time between at least two start times of sequential D2D synchronization signals to detect at least one of the D2D synchronization signals. Sub-monitoring periods may be determined based on the duration of the monitoring periods. The sub-monitoring periods may have a cumulative duration the same as the duration of the monitoring period and be scheduled to occur during different monitoring periods of the synchronization cycle.

    Abstract translation: 描述了用于确定设备到设备(D2D)同步信号的监视进度的方法,系统和设备。 可以确定包括多个监视周期的同步周期。 监视周期可以是连续D2D同步信号的至少两个开始时间之间的时间,以检测D2D同步信号中的至少一个。 可以基于监视期间的持续时间来确定子监视周期。 子监视周期可以具有与监视周期的持续时间相同的累积持续时间,并且被调度为在同步周期的不同监视周期期间发生。

    RECEIVER SIDE PROTECTION WITH RESOURCE FORWARDING IN SIDELINK

    公开(公告)号:WO2021208021A1

    公开(公告)日:2021-10-21

    申请号:PCT/CN2020/085145

    申请日:2020-04-16

    Abstract: Certain aspects of the present disclosure provide techniques for receiver side protection in sidelink communications. In certain aspects, a method performed by an apparatus generally includes obtaining, from a first user equipment (UE), first control information, which includes a first resource allocation information of one or more resources allocated for transmission by the first UE to the apparatus and an indication of a first cell associated with the first UE. The method generally includes obtaining, from a second UE, second control information, which generally includes a second resource allocation information of resources allocated for transmission by the second UE to the apparatus and an indication of a second cell associated with the second UE. The method generally includes determining, based on the first and second control information, potential interference from transmissions by the first UE and the second UE and taking one or more actions to mitigate the potential interference.

    DISTANCE BASED RESOURCE EXCLUSION
    9.
    发明申请

    公开(公告)号:WO2020146834A1

    公开(公告)日:2020-07-16

    申请号:PCT/US2020/013230

    申请日:2020-01-10

    Abstract: Methods, systems, and devices for wireless communications are described. A device may determine a set of parameters related to a transmission of a packet. For example, a device may determine a transmission range indication for the packet, a Quality-of-Service (QoS) of the packet, or a combination thereof. The device may then determine a resource exclusion parameter related to the transmission of the packet based in part on the set of parameters. Following the determination, the device may transmit, to one or more other devices in a wireless communications system, control signaling including the resource exclusion parameter.

    PRIORITY-BASED FEEDBACK TRIGGERING
    10.
    发明申请

    公开(公告)号:WO2020146633A3

    公开(公告)日:2020-07-16

    申请号:PCT/US2020/012935

    申请日:2020-01-09

    Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may utilize priority levels associated with packets or transmissions to determine whether to transmit feedback for a received transmission. The UE may compare priority levels between a transmission subject to a feedback condition and a transmission scheduled to be received when the feedback is scheduled to be transmitted to determine whether to send the feedback. The UE may communicate with the transmitting device according to the comparison and the determining. The UE may determine signal conditions causing a NAK and determine to send the NAK based on the signal conditions.

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