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EP-4145864-B1 - PRS CONFIGURATION PROCESSING METHOD AND APPARATUS, AND COMMUNICATION DEVICE AND STORAGE MEDIUM

EP4145864B1EP 4145864 B1EP4145864 B1EP 4145864B1EP-4145864-B1

Inventors

  • DONG, Xiandong

Dates

Publication Date
20260506
Application Date
20200426

Claims (14)

  1. A method for processing a position reference signal, PRS, configuration, comprising: sending (S110), by a location management function, LMF, first configuration information including a plurality of sets of PRS configurations, wherein each set of PRS configurations is configured for a positioning measurement of a user equipment, UE, wherein sending the first configuration information including the plurality of sets of PRS configurations comprises: sending a new radio positioning protocol a, NRPPa, message carrying the first configuration information to a base station or a transmission reception point, TRP, and/or sending positioning assistance information to the UE, wherein the positioning assistance information is carried by a long term evolution position protocol, LPP, message, the positioning assistance information comprises the first configuration information, or the positioning assistance information comprises the first configuration information and at least one of a cell identification for positioning measurement or resource location information of a positioning reference signal for positioning measurement; and sending, by the LMF, first indication information, wherein the first indication information indicates a set of PRS configurations for positioning selected among the plurality of sets of PRS configurations by the LMF, wherein sending the first indication information comprises: sending the first indication information to the base station or the TRP through the NRPPa message and/or sending the first indication information to the UE through the LPP message.
  2. The method of claim 1, wherein different sets of PRS configurations are different in at least one of: a sending period of a PRS; a sending bandwidth of the PRS; or a sending resource of the PRS.
  3. The method of any of claims 1-2, further comprising: sending second configuration information including a reconfiguration, wherein the second configuration information comprises at least one set of updated PRS configurations or second indication information, wherein the second indication information indicates at least one set of PRS configurations to be updated; wherein especially, the method further comprises: receiving confirmation information of the second configuration information, wherein the confirmation information is configured to indicate that the second configuration information is received.
  4. The method of any of claims 1-2, further comprising: receiving third indication information reported by the base station or the TRP, wherein the third indication information indicates a set of PRS configurations for positioning selected by the base station or the TRP from the plurality of sets of PRS configurations.
  5. A method for processing a position reference signal, PRS, configuration, comprising: receiving, (S410) first configuration information including a plurality of sets of PRS configurations sent by a location management function, LMF, wherein each set of PRS configurations is configured for a positioning measurement of a user equipment, UE; and receiving first indication information, wherein the first indication information indicates a set of PRS configurations for positioning selected among the plurality of sets of PRS configurations by LMF; wherein when the method is applied in the base station or a transmission reception point, TRP, receiving (S410) the first configuration information including the plurality of sets of PRS configurations comprises: receiving (S510) a new radio positioning protocol a, NRPPa, message carrying the first configuration information; and the first indication information is carried in the NRPPa message; wherein when the method is applied in the UE, and receiving (S410) the first configuration information including the plurality of sets of PRS configurations comprises: receiving positioning assistance information, wherein the positioning assistance information is carried by a long term evolution position protocol, LPP, message, the positioning assistance information comprises the first configuration information, or the positioning assistance information comprises the first configuration information and at least one of a cell identification for positioning measurement or resource location information of a positioning reference signal for positioning measurement; and the first indication information is carried in the LPP message.
  6. The method of claim 5, wherein the method is applied in the base station or the TRP, wherein the first indication information is configured to indicate the set of PRS configurations for positioning selected from the plurality of sets of PRS configurations; and wherein the method further comprises: reporting (S530) third indication information, wherein the third indication information is configured to indicate the set of PRS configurations for positioning selected by the base station or the TRP.
  7. The method of claim 5, wherein the method is applied in the base station or the TRP, wherein the method further comprises: receiving (S610) a request message of on-demand system information, SI, sent by a UE in a radio resource control, RRC, connected state; and sending (S620) a system message including the set of PRS configurations for positioning to the UE through a RRC message based on the first indication information and the request message.
  8. The method of claim 7, further comprising: receiving (S710) a request message of on-demand SI sent by the UE; broadcasting (S720) a system message including the first configuration information based on the request message, and sending a RRC message including fourth indication information, wherein the fourth indication information is determined based on the first indication information to indicate the set of PRS configurations for positioning selected from the plurality of sets of PRS configurations.
  9. The method of claim 7, further comprising: receiving a random access request from a UE in a RRC idle state or a RRC inactive state; in response to the random access request including a request message of the first configuration information, broadcasting a system message including the first configuration information and sending a random access response, RAR, including fifth indication information to the UE in the RRC idle state or the RRC inactive state, wherein the fifth indication information is determined based on the first indication information to indicate the set of PRS configurations for positioning selected from the plurality of sets of PRS configurations.
  10. The method of any of claims 5-9, wherein the method is applied in the base station or the TRP, the method further comprising: receiving a new radio positioning protocol a, NRPPa, message including second configuration information with a reconfiguration, wherein the second configuration information comprises at least one set of updated PRS configurations or second indication information, wherein the second indication information indicates at least one set of PRS configurations to be updated; and updating the at least one set of PRS configurations based on the second indication information.
  11. The method of a claim 10, further comprising: in response to receiving the second configuration information, reporting an NRPPa message including confirmation information, wherein the confirmation information is configured to indicate that the second configuration information is received.
  12. The method of claim 5, wherein the method is applied in a UE, and receiving the first configuration information including the plurality of sets of PRS configurations comprises: receiving (S710) a positioning assistance message including the first configuration information;
  13. The method of a claim 12, further comprising: receiving (S720) a long term evolution position protocol, LPP, message, wherein the LPP message includes a trigger command for triggering positioning of the UE and the first indication information; selecting (S730) a set of PRS configurations for current positioning from the plurality of sets of PRS configurations based on the first indication information; and performing (S740) a positioning measurement based on the trigger command and the set of PRS configurations for current positioning.
  14. A communication device, comprising: a processor, a transceiver, a memory and executable programs stored in the memory and executed by the processor; wherein when the processor executes the executable programs, the method of any of claims 1-4 or claims 5-13 is performed.

Description

TECHNICAL FIELD The disclosure relates to but is not limited to a field of wireless communication technologies, and particularly to a method for processing a position reference signal (PRS) configuration, an apparatus for processing a PRS configuration, a communication device and a storage medium. BACKGROUND The fifth generation cellular mobile communication (5th Generation, 5G) R16 introduces a variety of positioning technologies, which can realize positioning of a User Equipment (UE). For some of these positioning technologies, a location management function (LMF) is required to provide positioning assistance information to the UE. The LMF here is a communication entity. Therefore, the LMF sends the positioning assistance information to the UE through a long term evolution position protocol (LPP) message. Specifically, a serving base station of the UE sends the positioning assistance information to the UE through a radio resource control (RRC) message in a transparent transmission manner. In addition, the LMF may send the positioning assistance information to the base station through a new radio positioning protocol a (NRPPa) message, and then the base station sends it to the UE through the system message in a broadcast manner. WO2018143870A1 discloses a method performed by a wireless device (10) for managing positioning of the wireless device (10) in the wireless communications network (1). The wireless device obtains, from a network node (12,15,16), assistance data or configuration data comprising two or more positioning reference signal, PRS, configurations associated with a radio network node (12) or a service area of the radio network node (12). The wireless device further indicates, to the network node (12,15,16), a scope of usage of the two or more PRS configurations with an indication. "Discussion on DL only based positioning" relates to the potential techniques for NR positioning especially for DL only based RAT-dependent techniques. SUMMARY Embodiments of the disclosure provide a method for processing a position reference signal (PRS) configuration, an apparatus for processing a PRS configuration, a communication device and a storage medium. The invention is set out in the appended set of claims. In embodiments of the disclosure, the LMF sends the configuration including a plurality of sets of PRS configurations, and one base station or one TRP has a plurality of candidate PRS configurations. In this way, when performing positioning of the UE, the PRS configuration meeting a current positioning requirement can be selected, thus reducing signaling overheads as much as possible while ensuring that the positioning requirement is met. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure, and serve to explain the principles of the disclosure together with the specification. FIG. 1 is a schematic diagram illustrating a wireless communication system according to an embodiment.FIG. 2A is a schematic diagram illustrating an information interaction method between an LMF and a UE according to an embodiment.FIG. 2B is a schematic diagram illustrating an information interaction method between an LMF and a base station according to an embodiment.FIG. 2C is a schematic diagram illustrating an information interaction method between an LMF, an authentication management function (AMF), a base station and a UE according to an embodiment.FIG. 3A is a flowchart illustrating a method for processing a PRS configuration according to an embodiment.FIG. 3B is a flowchart illustrating a method for processing a PRS configuration according to an embodiment.FIG. 3C is a flowchart illustrating a method for processing a PRS configuration according to an embodiment.FIG. 4A is a flowchart illustrating a method for processing a PRS configuration according to an embodiment.FIG. 4B is a flowchart illustrating a method for processing a PRS configuration according to an embodiment.FIG. 4C is a flowchart illustrating a method for processing a PRS configuration according to an embodiment.FIG. 4D is a flowchart illustrating a method for processing a PRS configuration according to an embodiment.FIG. 4E is a flowchart illustrating a method for processing a PRS configuration according to an embodiment.FIG. 5 is a block diagram illustrating an apparatus for processing a PRS configuration according to an embodiment.FIG. 6 is a block diagram illustrating an apparatus for processing a PRS configuration according to an embodiment.FIG. 7 is a block diagram illustrating a terminal according to an embodiment.FIG. 8 is a block diagram illustrating a base station according to an embodiment. DETAILED DESCRIPTION The example embodiments will be described in detail here, and examples thereof are shown in the accompanying drawings. When the following descriptions refer to the accompanying drawings, unless otherwise indicat