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CN-122002528-A - User equipment positioning in roaming scenarios with wireless access backhaul deployment

CN122002528ACN 122002528 ACN122002528 ACN 122002528ACN-122002528-A

Abstract

Embodiments of the present disclosure relate to user equipment positioning in roaming scenarios with wireless access backhaul deployment. A method performed by a Location Management Function (LMF) in a second Public Land Mobile Network (PLMN) serving a User Equipment (UE) in a multi-PLMN deployment is provided. The method includes triggering UE positioning by a request to an LMF in a first PLMN. The request includes an indication to locate the UE in the second PLMN and the request includes information of the second PLMN. The method includes receiving information from an LMF in a first PLMN, the information including configuration information for a Radio Access Network (RAN) node in the first PLMN, the RAN node being adjacent to a RAN node in a second PLMN that serves the UE. And the method includes performing UE positioning based on information in which a location of the UE is determined based on multi-cell measurements performed by the UE for the RAN node or performed by the RAN node for the UE.

Inventors

  • IA Ke Sijitaluo
  • S. L. Nadaf
  • U.B. Elmary
  • O. Brakchi

Assignees

  • 诺基亚技术有限公司

Dates

Publication Date
20260508
Application Date
20251105
Priority Date
20241106

Claims (10)

  1. 1. An apparatus for communication, the apparatus implementing a location management function, LMF, in a second public land mobile network, PLMN, the second PLMN serving a user equipment, UE, in a multi-PLMN deployment, the apparatus comprising: at least one memory configured to store instructions, and At least one processing circuitry configured to access the at least one memory and execute the instructions to cause the apparatus at least to: triggering UE positioning by a request to an LMF in a first PLMN, the request comprising an indication for positioning the UE in the second PLMN, and the request comprising information of the second PLMN; receiving information from the LMF in the first PLMN, the information including configuration information for a radio access network, RAN, node in the first PLMN, the RAN node being adjacent to a RAN node in the second PLMN serving the UE, and The UE positioning is performed based on the information, the location of the UE in the information being determined based on multi-cell measurements performed by the UE for the RAN node or performed by the RAN node for the UE.
  2. 2. The apparatus of claim 1, wherein the information of the second PLMN comprises a location of the RAN node serving the UE, or Wherein the request further comprises information indicating at least one of a positioning method using the multi-cell measurement or one or more UE frequencies for the multi-cell measurement.
  3. 3. The apparatus of claim 1, wherein the multi-PLMN deployment comprises a wireless access backhaul, WAB, deployment in which the RAN node serving the UE is a WAB-RAN node of a WAB node to which the UE is connected, and the WAB-RAN node comprises a WAB-UE connected to the first PLMN; Wherein the first PLMN is a PLMN providing backhaul connectivity for the WAB node through the WAB-UE and the second PLMN is a home PLMN of the UE and the WAB-RAN node, or wherein the at least one processing circuitry is configured to execute the instructions to cause the apparatus to further obtain a location of the WAB node, and wherein the indication of the location for the UE comprises the location of the WAB node, the location of the WAB node for the LMF in the first PLMN to select the RAN node adjacent to the WAB node based on the location of the WAB node.
  4. 4. The apparatus of claim 1, wherein the multi-cell measurements comprise downlink measurements performed by the UE for the RAN node, and the apparatus is caused to perform the UE positioning comprises the apparatus being caused to determine the location of the UE based on the downlink measurements, and Wherein the information received from the LMF in the first PLMN further comprises transmission reception point TRP information indicating a location of the RAN node, and Wherein the location of the UE is determined based on the downlink measurements and the location of the RAN node for which the downlink measurements were performed.
  5. 5. The apparatus of claim 1, wherein the multi-cell measurements comprise downlink measurements performed by the UE for the RAN node, and the apparatus is caused to perform the UE positioning comprises the apparatus being caused to receive a report of the downlink measurements from the UE, send the report of the downlink measurements to the LMF in the first PLMN, the report of the downlink measurements for the LMF in the first PLMN to determine the location of the UE based on the downlink measurements and a location of the RAN node, and receive the location of the UE determined by the LMF in the first PLMN, or Wherein the multi-cell measurements include uplink measurements performed by the RAN node for the UE, and wherein the request further includes a UE sounding reference signal, SRS, configuration for the LMF in the first PLMN to configure the RAN node based on the SRS configuration, or Wherein the multi-cell measurement comprises an uplink measurement performed by the RAN node for the UE, and wherein the apparatus is caused to perform the UE positioning comprises the apparatus being caused to receive the location of the UE determined by the LMF in the first PLMN based on the uplink measurement and a location of the RAN node, or Wherein the multi-cell measurement comprises an uplink measurement performed by the RAN node for the UE, and wherein the apparatus being caused to perform the UE positioning comprises the apparatus being caused to receive the uplink measurement from the LMF in the first PLMN and transmission reception point TRP information indicating a location of the RAN node, and to determine the location of the UE based on the uplink measurement and the location of the RAN node performing the uplink measurement.
  6. 6. An apparatus for communication, the apparatus implementing a location management function, LMF, in a first public land mobile network, PLMN, the apparatus comprising: at least one memory configured to store instructions, and At least one processing circuitry configured to access the at least one memory and execute the instructions to cause the apparatus at least to: Receiving a request triggered by an LMF in a second PLMN serving a user equipment UE in a multi-PLMN deployment, the request including an indication for location of the UE in the second PLMN and the request including information of the second PLMN; Selecting a radio access network, RAN, node in the first PLMN, the RAN node being adjacent to a RAN node in the second PLMN serving the UE, and Transmitting information to the LMF in the second PLMN, the information including configuration information for the RAN node of the LMF in the second PLMN, the configuration information for performing the UE positioning based on the information, a location of the UE in the information determined based on multi-cell measurements performed by the UE for the RAN node or by the RAN node for the UE.
  7. 7. The apparatus of claim 6, wherein the information of the second PLMN comprises a location of the RAN node serving the UE, or Wherein the request further comprises information indicating at least one of a positioning method using the multi-cell measurement or one or more UE frequencies for the multi-cell measurement.
  8. 8. The apparatus of claim 6, wherein the multi-PLMN deployment comprises a Wireless Access Backhaul (WAB) deployment in which the RAN node serving the UE is a WAB-RAN node of a WAB node to which the UE is connected and the WAB-RAN node comprises a WAB-UE connected to the first PLMN, and Wherein the first PLMN is a PLMN providing backhaul connection for the WAB node through the WAB-UE and the second PLMN is a home PLMN of the UE and the WAB-RAN node, or wherein the indication of the location for the UE comprises the location of the WAB node, and Wherein the RAN node adjacent to the WAB node is selected based on the location of the WAB node.
  9. 9. The apparatus of claim 6, wherein the multi-cell measurements include downlink measurements performed by the UE for the RAN node and the information is sent to the LMF in the second PLMN, the information being for the LMF in the second PLMN to determine the location of the UE based on the downlink measurements, and Wherein the information sent to the LMF in the second PLMN further comprises transmission reception point TRP information indicating a location of the RAN node, and wherein the information is sent to the LMF in the second PLMN for the LMF in the second PLMN to determine the location of the UE based on the downlink measurements and the location of the RAN node for which the downlink measurements were performed.
  10. 10. The apparatus of claim 6, wherein the multi-cell measurements comprise downlink measurements performed by the UE for the RAN node, and the at least one processing circuitry is configured to execute the instructions to cause the apparatus further to at least receive a report of the downlink measurements performed by the UE from the LMF in the second PLMN, determine the location of the UE based on the downlink measurements and a location of the RAN node, and send the location of the UE to the LMF in the second PLMN, or Wherein the multi-cell measurements include uplink measurements performed by the RAN node for the UE, and wherein the request further includes a UE sounding reference signal, SRS, configuration, and the at least one processing circuitry is configured to execute the instructions to cause the apparatus to further configure the RAN node based on the SRS configuration, or Wherein the multi-cell measurements include uplink measurements performed by the RAN node for the UE, and wherein the at least one processing circuitry is configured to execute the instructions to cause the apparatus to further determine the location of the UE based at least on the uplink measurements and a location of the RAN node and send the location of the UE to the LMF in the second PLMN, or Wherein the multi-cell measurements comprise uplink measurements performed by the RAN node for the UE, and wherein the at least one processing circuitry is configured to execute the instructions to cause the apparatus to further send the uplink measurements and transmission reception point, TRP, information indicating a location of the RAN node to the LMF in the second PLMN, the TRP information being used by the LMF in the second PLMN to determine the location of the UE based on the uplink measurements and the location of the RAN node.

Description

User equipment positioning in roaming scenarios with wireless access backhaul deployment Technical Field The present disclosure relates generally to telecommunications and, more particularly, to wireless access backhaul in a telecommunications system. Background A telecommunication system may be regarded as a facility to enable communication sessions between two or more entities, such as user terminals, base stations and/or other nodes, by providing carriers between the various entities involved in the communication path. The telecommunication system may be provided, for example, by means of a communication network and one or more compatible communication devices. The communication session may include, for example, communications for carrying data for communications such as voice, video, electronic mail (email), text messages, multimedia and/or content data, and the like. Non-limiting examples of services provided include bi-or multi-directional calls, data communication or multimedia services, and access to data network systems such as the internet. In a wireless telecommunication system, at least part of a communication session between at least two stations occurs over a wireless link. Examples of wireless telecommunication systems include Public Land Mobile Networks (PLMNs), satellite-based communication systems, and different wireless local area networks, such as Wireless Local Area Networks (WLANs). Some wireless systems may be divided into cells and are therefore commonly referred to as cellular systems. The user may access the telecommunication system by means of a suitable communication device or terminal. The communication device of the user may be referred to as User Equipment (UE) or user equipment. The communication device is provided with suitable signal receiving and transmitting means for enabling communication, for example enabling access to a communication network or communication directly with other users. A communication device may access a carrier provided by a station (e.g., a base station of a cell) and transmit and/or receive communications on the carrier. A telecommunication system and associated equipment typically operate in accordance with a given standard or specification which sets out what the various entities associated with the communication system are permitted to do and how that operation should be achieved. Communication protocols and/or parameters which should be used for the connection of the various entities are also typically defined. One example of a telecommunication system is the Universal Mobile Telecommunication System (UMTS). Other examples of telecommunication systems are Long Term Evolution (LTE), LTE advanced, and so-called 5G or New Radio (NR) networks. NR is being standardized by the third generation partnership project (3 GPP). Disclosure of Invention Example implementations of the present disclosure relate to telecommunications, and more particularly, to Wireless Access Backhaul (WAB) in a telecommunications system. The present disclosure includes, but is not limited to, the following example implementations. Some example implementations provide an apparatus implementing a Location Management Function (LMF) in a second Public Land Mobile Network (PLMN) that serves User Equipment (UE) in a multi-PLMN deployment, the apparatus including at least one memory configured to store instructions, and at least one processing circuitry configured to access the at least one memory and execute the instructions to cause the apparatus to trigger UE positioning by a request to the LMF in a first PLMN, the request including an indication to locate the UE in the second PLMN and the request including information of the second PLMN, receive information from the LMF in the first PLMN, the information including configuration information for a Radio Access Network (RAN) node in the first PLMN, the RAN node being adjacent to a RAN node serving the UE in the second PLMN, and perform UE positioning based on the information, the location of the UE in the information being determined based on multi-cell measurements performed by the UE to the RAN node or performed by the RAN node to the UE. Some example implementations provide a method performed by a Location Management Function (LMF) in a second Public Land Mobile Network (PLMN) that serves a User Equipment (UE) in a multi-PLMN deployment, the method comprising triggering UE positioning by a request to the LMF in a first PLMN, the request including an indication to locate the UE in the second PLMN and the request including information of the second PLMN, receiving information from the LMF in the first PLMN, the information including configuration information for a Radio Access Network (RAN) node in the first PLMN that is adjacent to a RAN node in the second PLMN that serves the UE, and performing UE positioning based on the information, a location of the UE in the information determined based on multi-cell measurements performed by