APERIODIC AND CROSS COMPONENT CARRIER POSITIONING REFERENCE SIGNALS

    公开(公告)号:US20200351047A1

    公开(公告)日:2020-11-05

    申请号:US16861018

    申请日:2020-04-28

    Abstract: Methods, systems, and devices for wireless communications are described. The described techniques relate to improved methods, systems, devices, and apparatuses that support aperiodic and cross component carrier PRSs. Generally, the described techniques provide for receiving a dynamic trigger indicating that a UE is to monitor for one or more downlink positioning reference signals (PRSs). The UE may generate a timing measurement for the one or more downlink PRSs, and may transmit a measurement report that indicates the timing measurement to a transmission/reception point. A UE may also transmit a capability indicator, indicating that the UE is capable of maintaining phase coherence for a PRS that spans multiple component carriers, receive control signaling that indicates multiple component carries on which the PRS is phase coherent, generate a timing measurement for the PRS based on the control signaling, and transmit a measurement report that indicates the timing measurement to the transmission/reception point.

    PATTERNS FOR REFERENCE SIGNALS USED FOR POSITIONING IN A WIRELESS COMMUNICATIONS SYSTEM

    公开(公告)号:US20200351045A1

    公开(公告)日:2020-11-05

    申请号:US16804846

    申请日:2020-02-28

    Abstract: Methods, systems, and devices for wireless communication are described. Generally, the described techniques provide for determining a suitable pattern for transmitting reference signals used for positioning on allocated resources. In particular, the pattern may be used to assign the reference signals to frequency tones across multiple symbols such that the frequency tones to which the reference signals are mapped in at least two consecutive symbols are non-adjacent (e.g., separated by at least one frequency tone). In some cases, a wireless device may determine the pattern used to assign reference signals used for positioning autonomously (e.g., based on configured algorithms or a look-up table), and, in other cases, a wireless device (e.g., a user equipment (UE)) may determine the pattern used to assign reference signals used for positioning based on a configuration received from another wireless device (e.g., a base station).

    CONFIGURING A MAXIMUM NUMBER OF LAYERS
    223.
    发明申请

    公开(公告)号:US20200336893A1

    公开(公告)日:2020-10-22

    申请号:US16914014

    申请日:2020-06-26

    Abstract: Methods, systems, and devices for wireless communications are described. Generally, a user equipment (UE) may send a capabilities report to a base station. The capabilities report may include an explicit indication that the UE is capable of receiving a maximum layer radio resource control (RRC) parameter, or may include ambiguous (e.g., multiple) capabilities. The base station may receive the capabilities report, and may determine whether to transmit a maximum layer RRC parameter based on the explicit indication, or the ambiguous capabilities, which indicates a maximum number of layers to be used for subsequent communications. If the UE is capable of receiving the maximum layer RRC parameter, the base station may send the maximum layer RRC parameter to the UE, and may perform wireless communications according to the indicated maximum number of layers.

    Determination of demodulation reference signal and phase tracking reference signal parameters

    公开(公告)号:US10771221B2

    公开(公告)日:2020-09-08

    申请号:US16837423

    申请日:2020-04-01

    Abstract: Methods, systems, and devices for wireless communications are described. One method may include receiving radio resource control signaling configured with a first set of demodulation reference signal parameters for transmission of an uplink data channel of a type, receiving downlink control information of a format to activate the transmission of the uplink data channel, identifying a second set of demodulation reference signal parameters for transmission of the uplink data channel of the type based on the received downlink control information, and activating the transmission of the uplink data channel using the first and second set of demodulation reference signal parameters.

    POSITIONING BASED ON SOUNDING REFERENCE SIGNAL (SRS) CARRIER SWITCHING FRAMEWORK

    公开(公告)号:US20200267026A1

    公开(公告)日:2020-08-20

    申请号:US16733874

    申请日:2020-01-03

    Abstract: In some aspects, a method of wireless communication by a user equipment (UE) includes receiving, by the UE on a component carrier (CC), a downlink (DL) control information (DCI) that triggers transmission, by the UE on another CC, of an uplink (UL) reference signal (RS) for positioning. The method additionally includes transmitting, by the UE in response to the DCI, the UL RS for positioning on the other CC. In other aspects, a method of wireless communication by a base station includes transmitting, by the base station to a UE on a CC, a DCI that triggers transmission, by the UE on another CC, of an UL RS for positioning. The method additionally includes receiving, by the base station from the UE in response to the DCI, the UL RS for positioning on the other CC.

    Adaptive scalable numerology for high speed train scenarios

    公开(公告)号:US10715392B2

    公开(公告)日:2020-07-14

    申请号:US15477955

    申请日:2017-04-03

    Abstract: The present disclosure provides for adaptive resource management in new radio operations that adapts a numerology including a subcarrier spacing and/or cyclic prefix for a user equipment (UE) traveling at a high speed. A base station may transmit via a plurality of remote radio heads (RRH) to a user equipment (UE) is moving along a high speed track. The base station may transmit, in a first time period, using a first numerology including a first subcarrier spacing and a first cyclic prefix ratio, a first transmission for the UE. The base station may transmit, in a subsequent time period, using a second numerology including a second subcarrier spacing and a second cyclic prefix ratio, a second transmission for the UE. At least one of the second subcarrier spacing is different than the first subcarrier spacing or the second cyclic prefix ratio is different than the first cyclic prefix ratio.

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