Location assistance data with line of sight condition for a link between a user equipment and a wireless network node

Abstract

Disclosed are techniques for wireless communication. In an aspect, a user equipment (UE) transmits a first signal for positioning (RS-P) (e.g., SRS, etc.) on a first link from the UE to a wireless network node (e.g., BS, UE, etc.). The UE receives, from the wireless network node, location assistance data that comprises information that indicates a line of sight (LOS) condition associated with the first link. The UE measures a second RS-P on a second link from the wireless network node to the UE that is reciprocal to the first link. The UE performs one or more positioning measurements, determines a location estimate of the UE, or both, based in part on the reception of the second RS-P on the second link and the indicated LOS condition, the indicated LOS condition associated with the second link based on link reciprocity between the first and second links.

What is claimed is: 
     
         1 . A method of operating a network component, comprising:
 determining a line of sight (LOS) condition associated with a first propagation path between a wireless network node and a user equipment (UE), wherein the first propagation path is associated with an identifier of one or more resources of a reference signal for positioning (RS-P), and wherein the first propagation path is one of a plurality of paths between the wireless network node and the UE and the LOS condition is specifically indicated for the first propagation path; and   transmitting, to the UE, location assistance data to assist the UE to determine a location estimate of the UE, the location assistance data comprising information that indicates the LOS condition associated with the first propagation path,   wherein the indicated LOS condition indicates a probability or confidence level of the first propagation path being a LOS propagation path.   
     
     
         2 . The method of  claim 1 , wherein the indicated LOS condition associated with the first propagation path is further associated with a second propagation path at least based upon propagation path reciprocity. 
     
     
         3 . The method of  claim 1 , wherein the information is associated with the identifier of the one or more resources of the RS-P. 
     
     
         4 . The method of  claim 1 , wherein the identifier of the one or more resources of the RS-P is associated with an identifier of a positioning reference signal (PRS) resource or a PRS resource set. 
     
     
         5 . The method of  claim 1 , wherein the location assistance data is transported via long term evolution positioning protocol (LPP) signaling. 
     
     
         6 . The method of  claim 1 , wherein the location assistance data is transported via radio resource control (RRC) signaling, a downlink or sidelink media access control command element (MAC-CE), a downlink control information (DCI), a sidelink control information (SCI), or a combination thereof. 
     
     
         7 . The method of  claim 1 , wherein the RS-P corresponds to a downlink positioning reference signal (PRS). 
     
     
         8 . The method of  claim 1 ,
 wherein the indicated LOS condition indicates that the first propagation path is a LOS propagation path or a non-LOS (NLOS) propagation path, or   wherein the indicated LOS condition indicates a probability or confidence level of the first propagation path being a LOS propagation path or a NLOS propagation path.   
     
     
         9 . The method of  claim 1 , wherein the location assistance data is broadcasted. 
     
     
         10 . The method of  claim 9 , wherein the location assistance data is broadcasted in a particular region that is associated with a known LOS condition for propagation paths to and/or from the wireless network node. 
     
     
         11 . A network component, comprising:
 one or more memories;   one or more transceivers; and   one or more processors communicatively coupled to the one or more memories and the one or more transceivers, the one or more processors, either alone or in combination, configured to:   determine a line of sight (LOS) condition associated with a first propagation path between a wireless network node and a user equipment (UE), wherein the first propagation path is associated with an identifier of one or more resources of a reference signal for positioning (RS-P), and wherein the first propagation path is one of a plurality of paths between the wireless network node and the UE and the LOS condition is specifically indicated for the first propagation path; and   transmit, via the one or more transceivers, to the UE, location assistance data to assist the UE to determine a location estimate of the UE, the location assistance data comprising information that indicates the LOS condition associated with the first propagation path,   wherein the indicated LOS condition indicates a probability or confidence level of the first propagation path being a LOS propagation path.   
     
     
         12 . The network component of  claim 11 , wherein the indicated LOS condition associated with the first propagation path is further associated with a second propagation path at least based upon propagation path reciprocity. 
     
     
         13 . The network component of  claim 11 , wherein the information is associated with the identifier of the one or more resources of the RS-P. 
     
     
         14 . The network component of  claim 11 , wherein the identifier of the one or more resources of the RS-P is associated with an identifier of a positioning reference signal (PRS) resource or a PRS resource set. 
     
     
         15 . The network component of  claim 11 , wherein the location assistance data is transported via long term evolution positioning protocol (LPP) signaling. 
     
     
         16 . The network component of  claim 11 , wherein the location assistance data is transported via radio resource control (RRC) signaling, a downlink or sidelink media access control command element (MAC-CE), a downlink control information (DCI), a sidelink control information (SCI), or a combination thereof. 
     
     
         17 . The network component of  claim 11 , wherein the RS-P corresponds to a downlink positioning reference signal (PRS). 
     
     
         18 . The network component of  claim 11 ,
 wherein the indicated LOS condition indicates that the first propagation path is a LOS propagation path or a non-LOS (NLOS) propagation path, or   wherein the indicated LOS condition indicates a probability or confidence level of the first propagation path being a LOS propagation path or a NLOS propagation path.   
     
     
         19 . The network component of  claim 11 , wherein the location assistance data is broadcasted. 
     
     
         20 . The network component of  claim 19 , wherein the location assistance data is broadcasted in a particular region that is associated with a known LOS condition for propagation paths to and/or from the wireless network node. 
     
     
         21 . A network component, comprising:
 means for determining a line of sight (LOS) condition associated with a first propagation path between a wireless network node and a user equipment (UE), wherein the first propagation path is associated with an identifier of one or more resources of a reference signal for positioning (RS-P), and wherein the first propagation path is one of a plurality of paths between the wireless network node and the UE and the LOS condition is specifically indicated for the first propagation path; and   means for transmitting, to the UE, location assistance data to assist the UE to determine a location estimate of the UE, the location assistance data comprising information that indicates the LOS condition associated with the first propagation path,   wherein the indicated LOS condition indicates a probability or confidence level of the first propagation path being a LOS propagation path.   
     
     
         22 . The network component of  claim 21 , wherein the indicated LOS condition associated with the first propagation path is further associated with a second propagation path at least based upon propagation path reciprocity. 
     
     
         23 . The network component of  claim 21 , wherein the information is associated with the identifier of the one or more resources of the RS-P. 
     
     
         24 . The network component of  claim 21 , wherein the identifier of the one or more resources of the RS-P is associated with an identifier of a positioning reference signal (PRS) resource or a PRS resource set. 
     
     
         25 . The network component of  claim 21 , wherein the location assistance data is transported via long term evolution positioning protocol (LPP) signaling. 
     
     
         26 . The network component of  claim 21 , wherein the location assistance data is transported via radio resource control (RRC) signaling, a downlink or sidelink media access control command element (MAC-CE), a downlink control information (DCI), a sidelink control information (SCI), or a combination thereof. 
     
     
         27 . The network component of  claim 21 , wherein the RS-P corresponds to a downlink positioning reference signal (PRS). 
     
     
         28 . The network component of  claim 21 ,
 wherein the indicated LOS condition indicates that the first propagation path is a LOS propagation path or a non-LOS (NLOS) propagation path, or   wherein the indicated LOS condition indicates a probability or confidence level of the first propagation path being a LOS propagation path or a NLOS propagation path.   
     
     
         29 . The network component of  claim 21 , wherein the location assistance data is broadcasted. 
     
     
         30 . The network component of  claim 29 , wherein the location assistance data is broadcasted in a particular region that is associated with a known LOS condition for propagation paths to and/or from the wireless network node. 
     
     
         31 . A non-transitory computer-readable medium storing computer-executable instructions that, when executed by a network component, cause the network component to:
 determine a line of sight (LOS) condition associated with a first propagation path between a wireless network node and a user equipment (UE), wherein the first propagation path is associated with an identifier of one or more resources of a reference signal for positioning (RS-P), and wherein the first propagation path is one of a plurality of paths between the wireless network node and the UE and the LOS condition is specifically indicated for the first propagation path; and   transmit, to the UE, location assistance data to assist the UE to determine a location estimate of the UE, the location assistance data comprising information that indicates the LOS condition associated with the first propagation path,   wherein the indicated LOS condition indicates a probability or confidence level of the first propagation path being a LOS propagation path.   
     
     
         32 . The non-transitory computer-readable medium of  claim 31 , wherein the indicated LOS condition associated with the first propagation path is further associated with a second propagation path at least based upon propagation path reciprocity. 
     
     
         33 . The non-transitory computer-readable medium of  claim 31 , wherein the information is associated with the identifier of the one or more resources of the RS-P. 
     
     
         34 . The non-transitory computer-readable medium of  claim 31 , wherein the identifier of the one or more resources of the RS-P is associated with an identifier of a positioning reference signal (PRS) resource or a PRS resource set. 
     
     
         35 . The non-transitory computer-readable medium of  claim 31 , wherein the location assistance data is transported via long term evolution positioning protocol (LPP) signaling. 
     
     
         36 . The non-transitory computer-readable medium of  claim 31 , wherein the location assistance data is transported via radio resource control (RRC) signaling, a downlink or sidelink media access control command element (MAC-CE), a downlink control information (DCI), a sidelink control information (SCI), or a combination thereof. 
     
     
         37 . The non-transitory computer-readable medium of  claim 31 , wherein the RS-P corresponds to a downlink positioning reference signal (PRS). 
     
     
         38 . The non-transitory computer-readable medium of  claim 31 ,
 wherein the indicated LOS condition indicates that the first propagation path is a LOS propagation path or a non-LOS (NLOS) propagation path, or   wherein the indicated LOS condition indicates a probability or confidence level of the first propagation path being a LOS propagation path or a NLOS propagation path.   
     
     
         39 . The non-transitory computer-readable medium of  claim 31 , wherein the location assistance data is broadcasted. 
     
     
         40 . The non-transitory computer-readable medium of  claim 39 , wherein the location assistance data is broadcasted in a particular region that is associated with a known LOS condition for propagation paths to and/or from the wireless network node.