Wireless communication of positioning through sidelink
Sidelink communications may be used for positioning between devices. The sidelink based communications may be between equipment (“UE”) and/or with other network nodes, such as a basestation. The sidelink positioning information may be used for location determination. This may include vehicle to everything (V2X) communications via a PC5 interface. The sidelink positioning information is communicated via the PC5 interface and includes location, capability, assistance data, and measurement reports.
1 . A method for wireless communication, comprising:
receiving, by a user equipment (UE), sidelink positioning information via a first signaling, wherein the first signaling comprises a signaling generated at a new logical layer, the new logical layer differs from non-access stratum (NAS) layer, radio resource control (RRC) layer, application layer, medium access control (MAC) layer, and physical layer (PHY) layer, and the first signaling differs from PC5-S signaling, PC5-RRC signaling, NAS signaling, sidelink control information (SCI) signaling, and RRC signaling, and wherein the sidelink positioning information comprises at least one of a sidelink positioning capability request, a sidelink positioning capability response, a sidelink assistance data request, a sidelink assistance data response, a sidelink measurement request, or a sidelink measurement report.
2 . The method of claim 1 , wherein the sidelink positioning information is received from another node, the another node comprising at least one of a network node or another UE; and wherein the network node comprises at least one of a location management function (LMF) or a gNB.
3 . The method of claim 1 , wherein the sidelink positioning information is received from a network node, the method further comprising:
receiving, from the network node, at least one of sidelink assistance data for the UE, or sidelink assistance data for one or more associated peer UEs.
4 . The method of claim 1 , wherein the new logic layer is between the application layer and the NAS layer.
5 . The method of claim 1 , wherein the received sidelink positioning information comprises a request to transmit a sidelink positioning reference signal (SL-PRS).
6 . The method of claim 1 , wherein the received sidelink positioning information comprises the sidelink positioning capability response, the sidelink positioning capability response comprises an indication of whether a UE sending the sidelink positioning capability response can measure at least one of SL-PRS reference signal received power (SL-PRS-RSRP), received power per path of SL-PRS reference signal (SL-PRS-RSRPP), SL-PRS reference signal reference time of arrival (SL-PRS-RTOA), or SL-PRS reference signal time difference (SL-PRS-RSTD).
7 . The method of claim 1 , wherein the received sidelink positioning information comprises the sidelink assistance data request, the sidelink assistance data request comprising at least one of requesting assistance data of UE's location, or requesting assistance data of UE's synchronization information.
8 . The method of claim 1 , wherein the received sidelink positioning information comprises the sidelink assistance data response, the sidelink assistance data response comprising at least one of assistance data for calculating sidelink positioning estimates, a sidelink positioning reference signal (SL-PRS) configuration, or an identifier for identifying an SL-PRS configuration; and wherein
the assistance data for calculating sidelink positioning estimates comprises at least one of a UE's location, or a UE's synchronization source, or a UE's synchronization reference;
the SL-PRS configuration comprises at least one of a period of SL-PRS resource, a number of symbols that a SL-PRS occupied in a slot, start symbol of SL-PRS in a slot, or SL-PRS resource frequency location, bandwidth, or comb size; and
the identifier for identifying the SL-PRS configuration comprises a UE application layer ID.
9 . The method of claim 1 , wherein the received sidelink positioning information comprises the sidelink measurement request, the sidelink measurement request comprising an SL-PRS resource identifier to indicate SL-PRS resource for reception.
10 . The method of claim 1 , wherein the received sidelink positioning information comprises the sidelink measurement report, the sidelink measurement report comprising at least one of a sidelink positioning reference signal (SL-PRS) reference signal received power (RSRP), received power per path of SL-PRS reference signal (SL-PRS-RSRPP), an SL-PRS time of arrival (TOA), an SL-PRS Rx-Tx time difference, an SL-PRS reference signal time difference (RSTD), a time stamp for a measurement, a time quality, a measurement quality, an identifier of measured SL-PRS, or an identifier of measured UE.
11 . The method of claim 1 , wherein the sidelink positioning information comprises an SL-PRS priority and an SL-PRS periodicity.
12 . The method of claim 1 , wherein the sidelink positioning information comprises an information element for indicating that a SL-PRS needs to be measured and a measurement configuration.
13 . The method of claim 1 , wherein the sidelink positioning information comprises an information element for indicating a SL-PRS measurement result, wherein the SL-PRS measurement result includes a RSRP of the SL-PRS.
14 . A method for wireless communication, comprising:
sending, by a network node, sidelink positioning information via a first signaling, wherein the first signaling comprises signaling generated at a new logical layer, the new logical layer differs from non-access stratum (NAS) layer, radio resource control (RRC) layer, application layer, medium access control (MAC) layer, and physical layer (PHY) layer, and the first signaling differs from PC5-S signaling, PC5-RRC signaling, NAS signaling, sidelink control information (SCI) signaling, and RRC signaling, and wherein the sidelink positioning information comprises at least one of a sidelink positioning capability request, a sidelink positioning capability response, a sidelink assistance data request, a sidelink assistance data response, a sidelink measurement request, or a sidelink measurement report.
15 . A user equipment (UE), comprising a memory for storing computer instructions and at least one processor configured to read the computer instructions from the memory to implement:
receiving sidelink positioning information via a first signaling, wherein the first signaling comprises a signaling generated at a new logical layer, the new logical layer differs from non-access stratum (NAS) layer, radio resource control (RRC) layer, application layer, medium access control (MAC) layer, and physical layer (PHY) layer, and the first signaling differs from PC5-S signaling, PC5-RRC signaling, NAS signaling, sidelink control information (SCI) signaling, and RRC signaling, and wherein the sidelink positioning information comprises at least one of a sidelink positioning capability request, a sidelink positioning capability response, a sidelink assistance data request, a sidelink assistance data response, a sidelink measurement request, or a sidelink measurement report.
16 . The UE of claim 15 , wherein the sidelink positioning information is received from another node, the another node comprising at least one of a network node or another UE; and wherein the network node comprises at least one of a location management function (LMF) or a gNB.
17 . The UE of claim 15 , wherein the sidelink positioning information is received from a network node, the at least one processor is configured to read the computer instructions from the memory to further implement:
receiving, from the network node, at least one of sidelink assistance data for the UE, or sidelink assistance data for one or more associated peer UEs.
18 . The UE of claim 15 , wherein the new logic layer is between the application layer and the NAS layer.
19 . The UE of claim 15 , wherein the received sidelink positioning information comprises a request to transmit a sidelink positioning reference signal (SL-PRS).
20 . The UE of claim 15 , wherein the received sidelink positioning information comprises the sidelink positioning capability response, the sidelink positioning capability response comprises an indication of whether a UE sending the sidelink positioning capability response can measure at least one of SL-PRS reference signal received power (SL-PRS-RSRP), received power per path of SL-PRS reference signal (SL-PRS-RSRPP), SL-PRS reference signal reference time of arrival (SL-PRS-RTOA), or SL-PRS reference signal time difference (SL-PRS-RSTD).