Spatial relationship design for sidelink-assisted positioning
AssigneeQUALCOMM Incorporated
InventorsJingchao BAO, Sony AKKARAKARAN, Tao LUO, Juan MONTOJO, Alexandros MANOLAKOS
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Abstract
According to embodiments herein, a UE can be configured with a spatial relationship for an Uplink Position Reference Signal (UL-PRS) to transmit via the SL interface. This information can include various options related to a transparent mode in which an anchor UE connected with the UE via the SL interface generally acts like a base station. In an advanced mode, any of a variety of aspects of the SL interface used in communication between the UE and anchor UE may be used as a reference for UL-PRS.
Claims30
A method of transmitting an Uplink Position Reference Signal (UL-PRS) by a first User Equipment (UE) for determining a location of the first UE, the method comprising:
- receiving, at the first UE, a configuration for the UL-PRS, wherein:
- (i) the configuration is received from a base station and a first spatial relationship of the configuration is:
- undefined,
- defined as a positioning-related reference signal received by the first UE from a second UE, or
- defined as a Synchronization Signal Block (SSB) sent to the first UE;
- or
- (ii) the configuration is received from the second UE or a serving gNB of the first UE, wherein the configuration defines a second spatial relationship using a signal sent to the first UE by the second UE via a sidelink (SL) interface;
- determining how to transmit the UL-PRS based at least in part on the configuration;
- and
- transmitting the UL-PRS by the first UE based on the determination of how to transmit the UL-PRS.
A method of configuring a first User Equipment (UE) to transmit an Uplink Position Reference Signal (UL-PRS) to a second UE for determining a location of the first UE, the method comprising:
- determining, at a base station, a spatial relationship for the UL-PRS;
- including, in a configuration for the first UE, a spatial relationship based on determining the spatial relationship for the UL-PRS, wherein the spatial relationship of the configuration is:
- undefined,
- defined as a positioning-related reference signal received by the first UE from the second UE via a sidelink (SL) interface, or
- defined as a Synchronization Signal Block (SSB) sent to the first UE;
- and
- transmitting the configuration from the base station to the first UE.
A first User Equipment (UE) for transmitting an Uplink Position Reference Signal (UL-PRS) for determining a location of the first UE, the first UE comprising:
- a transceiver;
- a memory;
- and
- one or more processors communicatively coupled with the transceiver and the memory, wherein the one or more processors are configured to:
- receive, via the transceiver, a configuration for the UL-PRS, wherein:
- (i) the configuration is received from a base station and a first spatial relationship of the configuration is:
- undefined,
- defined as a positioning-related reference signal received by the first UE from a second UE, or
- defined as a Synchronization Signal Block (SSB) sent to the first UE;
- or
- (ii) the configuration is received from the second UE or a serving gNB of the first UE, wherein the configuration defines a second spatial relationship using a signal sent to the first UE by the second UE via a sidelink (SL) interface;
- determine how to transmit the UL-PRS based at least in part on the configuration;
- and
- transmit the UL-PRS, via the transceiver, based on the determination of how to transmit the UL-PRS.
A base station for configuring a first User Equipment (UE) to transmit an Uplink Position Reference Signal (UL-PRS) to a second UE for determining a location of the first UE, the base station comprising:
- a transceiver;
- a memory;
- and
- one or more processors communicatively coupled with the transceiver and the memory, wherein the one or more processors are configured to:
- determine, via the transceiver, a spatial relationship for the UL-PRS;
- include, in a configuration for the first UE, a spatial relationship based on determining the spatial relationship for the UL-PRS, wherein the spatial relationship of the configuration is:
- undefined,
- define as a positioning-related reference signal received by the first UE from the second UE via a sidelink (SL) interface, or
- define as a Synchronization Signal Block (SSB) sent to the first UE;
- and
- transmit, via the transceiver, the configuration from the base station to the first UE.
Dependencies are inferred from the claim text.