CN116391402A

CN116391402A - Method, apparatus and computer program product for wireless communication

Info

Publication number: CN116391402A
Application number: CN202080106903.1A
Authority: CN
Inventors: 李志军; 朱进国
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2020-10-28
Filing date: 2020-10-28
Publication date: 2023-07-04
Also published as: WO2022087907A1

Abstract

The invention provides a method, an apparatus and a computer program product for wireless communication. The method comprises the following steps: the method comprises the steps that a position management node receives positioning measurement information from a terminal, wherein the terminal is accessed to a satellite network; and the position management node calculates the geographic position of the terminal according to the positioning measurement information. The geographical location can be used to obtain the cellular network location of the terminal.

Description

Method, apparatus and computer program product for wireless communication

Technical Field

The present invention relates generally to wireless communications.

Background

Integration of satellite networks and cellular networks is a recent trend for satellite communications. Satellite communications are typically used for public safety services (e.g., emergency calls) when the terminal device is not within the coverage of a terrestrial base station. For example, a ship in open sea may obtain emergency services from a 5G network using satellite access (satellite communications).

In a cellular network, a cell ID is used to indicate a cell to which a User Equipment (UE) is connected. The concept of cell ID is also introduced in satellite networks. In satellite networks, the cell ID is referred to as a satellite cell ID.

For emergency services, the core network needs a cell ID to select an appropriate emergency call center (e.g., public safety answering point, (Public Safety Answering Point, PSAP)). Typically, the PSAP is configured to serve a particular area in the public land mobile network (public land mobile network, PLMN). For example, the PSAP may serve a list of Tracking Areas (TAs), and each TA includes a set of cells.

In order to apply the concept and steps of cell IDs in cellular networks to satellite networks, satellites are configured with at least one satellite cell ID such that satellite beams can broadcast the satellite cell ID. Such satellite cell IDs are received by the radio access network (radio access network, RAN) and reported to the Core Network (CN). In emergency services, the satellite cell ID is used for PSAP selection. However, since satellite beams typically cover a large area and may span the boundaries of multiple administrative areas (e.g., the boundaries of two countries), the CN may not be able to accurately select an emergency center (e.g., PSAP) by using the satellite cell ID.

To select the correct emergency centre, the core network should be able to obtain the exact location of the UE, which may be a geographical location or a cellular network location (e.g. cell ID or Tracking Area (TA)) corresponding to the geographical location of the UE.

Disclosure of Invention

The present invention relates to a method, apparatus and computer program product for wireless communication that can obtain a more accurate cellular network location of a terminal.

One aspect of the invention relates to a wireless communication method. In one embodiment, a wireless communication method includes: the method comprises the steps that a position management node receives positioning measurement information from a terminal, wherein the terminal is accessed to a satellite network; and the position management node calculates the geographic position of the terminal according to the positioning measurement information. The geographical location can be used to obtain the cellular network location of the terminal.

Another aspect of the invention relates to a wireless communication method. In an embodiment, a wireless communication method includes: the position management node receives a position acquisition request from the access management node; the location management node maps the geographic location to a cellular network location; and the location management node sending the mapped cellular network location to the access management node. The cellular network location corresponds to a terminal accessing the satellite network.

Another aspect of the invention relates to a wireless communication method. In an embodiment, a wireless communication method includes: the access management node sends a position acquisition request to the position management node; and the access management node receives the cellular network location from the location management node. The cellular network location corresponds to a terminal accessing the satellite network.

Another aspect of the invention relates to a wireless communication method. In an embodiment, a wireless communication method includes: the access management node sends a position acquisition request to the position management node; the access management node receives the geographic location from the location management node; and the access management node maps the geographic location to a cellular network location. The cellular network location corresponds to a terminal accessing the satellite network.

Another aspect of the invention relates to a wireless communication method. In an embodiment, a wireless communication method includes: the terminal acquiring positioning measurement information in response to the terminal accessing the satellite network; and the terminal sends the positioning measurement information to the network node. The positioning measurement information can be used to obtain the cellular network location of the terminal.

Another aspect of the invention relates to a location management node. In an embodiment, a location management node comprises a communication unit and a processor. The processor is configured to receive positioning measurement information from a terminal, wherein the terminal accesses a satellite network; and calculating the geographic position of the terminal according to the positioning measurement information. The geographical location can be used to obtain the cellular network location of the terminal.

Another aspect of the invention relates to a location management node. In an embodiment, a location management node comprises a communication unit and a processor. The processor is configured to receive a location acquisition request from an access management node; mapping the geographic location to a cellular network location; and transmitting the mapped cellular network location to an access management node. The cellular network location corresponds to a terminal accessing the satellite network.

Another aspect of the invention relates to an access management node. In an embodiment, an access management node comprises a communication unit and a processor. The processor is configured to send a location acquisition request to the location management node; and receiving the cellular network location from the location management node. The cellular network location corresponds to a terminal accessing the satellite network.

Another aspect of the invention relates to an access management node. In an embodiment, an access management node comprises a communication unit and a processor. The processor is configured to send a location acquisition request to the location management node; receiving a geographic location from a location management node; and mapping the geographic location to a cellular network location. The cellular network location corresponds to a terminal accessing the satellite network.

Another aspect of the invention relates to a terminal. In an embodiment, a terminal includes a communication unit and a processor. The processor is configured to obtain positioning measurement information in response to a terminal accessing the satellite network; and transmits the positioning measurement information. The positioning measurement information can be used to obtain the cellular network location of the terminal.

Various embodiments may preferably implement the following features:

preferably, the positioning measurement information is received by the access management node.

Preferably, the Access management node receives the positioning measurement information through a registration message or an uplink Non-Access Stratum (NAS) transport message.

Preferably, the location management node receives the location measurement information from the access management node in a long term evolution positioning protocol, LPP, message.

Preferably, the positioning measurement information comprises at least one of global navigation satellite system (Global Navigation Satellite System, GNSS) measurement information or global positioning system (Global Positioning System, GPS) coordinates.

Preferably, the wireless communication method further comprises: the position management node receives a position acquisition request from the access management node; the location management node maps the geographic location to a cellular network location; and the location management node sending the mapped cellular network location to the access management node.

Preferably, the location acquisition request includes at least one of an indication that a cellular network location is required or an indication that a geographic location is mapped to a cellular network location.

Preferably, the cellular network location comprises at least one of a cell ID or tracking area code (Tracking Area Code, TAC).

Preferably, the wireless communication method further comprises: the position management node receives a position acquisition request from the access management node; and the location management node sends the geographic location to the access management node.

Preferably, the cellular network location can be used to establish an emergency session for the terminal.

Preferably, the wireless communication method further comprises: the position management node receives positioning measurement information from the terminal by starting a positioning process; and the position management node calculates the geographic position of the terminal according to the positioning measurement information.

Preferably, the wireless communication method further comprises: the location management node receives the location measurement information from the access management node via a long term evolution location protocol, LPP, message.

Preferably, the wireless communication method further comprises: the access management node receives positioning measurement information from the terminal; and the access management node sends positioning measurement information to the position management node. The geographic location corresponds to positioning measurement information.

Preferably, the positioning measurement information is received via a registration message or an uplink non-access stratum NAS transport message.

Preferably, the positioning measurement information is sent to the location management node in the form of a Long term evolution positioning protocol (Long-Term Evolution Positioning Protocol, LPP) message.

Preferably, the positioning measurement information is acquired in response to emergency services required by the terminal.

Preferably, the positioning measurement information is sent to the access management node via a registration message or an uplink non-access stratum NAS transport message.

Preferably, the positioning measurement information is encapsulated in a long term evolution positioning protocol LPP message.

The present invention relates to a computer program product comprising a computer readable program medium code stored thereon, which when executed by a processor causes the processor to implement a wireless communication method according to any of the preceding methods.

The exemplary embodiments disclosed herein are intended to provide an easy-to-understand feature by referring to the following detailed description when taken in conjunction with the accompanying drawings. According to various embodiments, exemplary systems, methods, apparatus, and computer program products are disclosed herein. It should be understood, however, that these embodiments are given by way of example and not limitation, and that various modifications of the disclosed embodiments may be apparent to persons skilled in the art upon reading this disclosure while remaining within the scope of the invention.

Thus, the invention is not limited to the exemplary embodiments and applications described and illustrated herein. In addition, the particular order or hierarchy of steps in the methods disclosed herein is only an exemplary approach. Based on design preferences, the specific order or hierarchy of steps in the methods or processes disclosed may be rearranged while remaining within the scope of the present invention. Thus, those of ordinary skill in the art will understand that the methods and/or techniques disclosed herein present various steps or acts in an example order, and that the present invention is not limited to the specific order or hierarchy presented, unless specifically stated otherwise.

Drawings

The above and other aspects and implementations thereof are described in more detail in the accompanying drawings, description and claims.

Fig. 1A shows a schematic diagram of a satellite access network architecture according to an embodiment of the invention.

Fig. 1B shows another schematic diagram of a satellite access network architecture according to an embodiment of the invention.

Fig. 2A and 2B are schematic diagrams illustrating a procedure of making an emergency call to a UE accessing a satellite network according to an embodiment of the present invention.

Fig. 3A and 3B show schematic diagrams of another procedure for making an emergency call to a UE accessing a satellite network according to an embodiment of the present invention.

Fig. 4A and 4B show schematic diagrams of yet another procedure for making an emergency call to a UE accessing a satellite network according to an embodiment of the present invention.

Fig. 5A and 5B show schematic diagrams of yet another procedure for making an emergency call to a UE accessing a satellite network according to an embodiment of the present invention.

Fig. 6 shows an example of a schematic diagram of a terminal according to an embodiment of the invention.

Fig. 7 shows an example of a schematic diagram of a wireless network node according to an embodiment of the invention.

Fig. 8 shows an example of a schematic diagram of another radio network node according to another embodiment of the invention.

Fig. 9 illustrates a wireless communication method according to an embodiment of the present invention.

Fig. 10 illustrates another wireless communication method according to an embodiment of the present invention.

Fig. 11 illustrates another wireless communication method according to an embodiment of the present invention.

Fig. 12 illustrates another wireless communication method according to an embodiment of the present invention.

Fig. 13 illustrates another wireless communication method according to an embodiment of the present invention.

Detailed Description

The convergence of satellite networks and cellular networks is a new trend for satellite communications. Important developments in non-cellular networks (non-terrestrial network, NTN) have focused on efficient use of cellular networks, functional entities, signaling procedures and cellular network interfaces. It would be beneficial to have an efficient integration and unified management of satellite networks and cellular networks.

A simple architecture for accessing a 5G network through a satellite is a transparent satellite access network architecture, in which the satellite acts as an analog Radio Frequency (RF) repeater and provides a transparent tunnel between the UE and the RAN. Typically, satellites repeat the NR-Uu radio interface from the feeder link (between the NTN gateway and the satellite) to the service link (between the satellite and the UE), and vice versa.

Fig. 1A shows a schematic diagram of a transparent satellite access network architecture according to an embodiment of the invention. The network entities or network functions shown in fig. 1A are as follows:

1) UE: user equipment

The UE corresponds to a mobile terminal accessing the 5G network directly via NG-RAN (gNB) or via satellite.

2) SAT RF (Satellite Radio Function): satellite radio function

The satellite payload implements frequency conversion and radio frequency amplifiers in both the uplink and downlink directions.

3) NTN GW (Non-Terrestrial Network Gateway): non-cellular network gateway

The NTN GW supports all necessary functions for forwarding NR-Uu interface signals. In some embodiments, the NTN GW is deployed on the ground, and one NTN GW may be configured to serve multiple gnbs.

4) NG RAN (Next Generation Radio Access Network): next generation radio access network

In 5G, the NG RAN is an NR base station, also known as a gNB.

5) AMF (Access and Mobility Management function): access and mobility management functions.

The AMF provides access management and mobility management for the UE, e.g., registration with the network, registration during UE mobility, etc.

6) SMF (Session Management Function): session management function

SMF provides PDU session management for the UE, e.g., internet Protocol (IP) address allocation, qoS flow setup, etc.

7) UPF (User plane function): user plane functions.

UPF provides IP traffic routing and forwarding management.

8) PCF (Policy Control Function): policy control function

The PCF provides QoS policy rules to control the plane functions to enforce these rules.

9) UDM (Unified Data Management): unified data management

The UDM manages data for access authorization, user registration and data network profiles.

When there is no cellular network coverage, the UE may find an appropriate satellite to establish (e.g., establish or set up) a satellite connection for accessing the 5G network through satellite access in order to obtain public safety services (e.g., emergency services). For example, a ship in open sea may make emergency calls using a 5G network using satellite access.

Fig. 1B shows a schematic diagram of a network architecture supporting emergency services with satellite access according to an embodiment of the invention. In the present embodiment, the emergency service is implemented by an IP multimedia subsystem (IMS subsystem), and the location service (Location Services, LCS) participates in providing location information of the UE.

In this architecture, there are also other network entities or network functions:

10 LMF (Location Management Function)): position management function

The LMF provides location management functionality in a 5G network.

11 E-SMLC (Evolved Serving Mobile LoCation)): evolved serving mobile location

The E-SMLC provides the necessary functionality related to the network-based positioning method. The E-SMLC interrogates the RAN node to obtain the necessary measurements that are useful for various positioning methods.

12 IMS (IP multimedia subsystem) core: IP multimedia subsystem core

The IMS core provides IMS session management and relates to proxy call session control functions (P-CSCFs), serving call session control functions (S-CSCFs), home Subscriber Servers (HSS), etc.

13 LRF (Location Retrieval Function)): position acquisition function

The LRF provides a location acquisition function for emergency services. In an embodiment, the LRF is collocated with the LMF.

More specifically, in step 201 shown in fig. 2A, the UE establishes a connection with a satellite. In an embodiment, when the UE moves to an area that is not covered by the cellular network (e.g., the area is not covered by the cellular network), the UE may decide to access the 5G network via satellite. The UE then searches for available satellites and selects the appropriate satellite to establish (e.g., set up, establish, build) a satellite connection.

In step 202, the ue establishes a Radio Resource Control (RRC) connection towards the gNB (e.g., RAN node or NG-RAN). In an operator's network, one or more NTN GWs for satellite access may be deployed. The NTN GW is typically deployed on the ground and is configured to connect to one or more NG-RANs to serve multiple satellites.

When the satellite receives a message (e.g., an RRC message) from the UE, the satellite forwards the message to the connected NTN GW, and the NTN GW forwards the message to the appropriate NG-RAN. The NTN GW may use a satellite cell Identifier (ID) corresponding to the satellite to decide which NG-RAN forwards the message.

In step 203, the ue sends a registration request to the NG-RAN, wherein the registration request is encapsulated in an RRC message. The RRC message is transparently forwarded by the satellite and NTN GW.

In step 204, the ng-RAN selects an appropriate AMF for the UE. In an embodiment, the NG-RAN may select an AMF capable of serving satellite communications, for example, by using a satellite Radio Access Technology (RAT) and a satellite cell ID.

In step 205, the ng-RAN forwards the registration request to the selected AMF. In an embodiment, the registration request message is encapsulated in a NG application protocol (NG-AP) message. In an embodiment, the gNB indicates the following information in the NG-AP message: global RAN node ID of NG-RAN, satellite cell ID, etc. The AMF determines whether a satellite RAT is currently used, e.g. based on the global RAN node ID of the NG-RAN.

In step 206, the amf retrieves the UE subscription from the UDM to determine whether the registration request can be accepted.

In step 207, if the registration request is accepted, the AMF returns a registration accept message encapsulated in the NG-AP message to the NG-RAN.

In step 208, the ng-RAN forwards the registration accept message to the UE.

In step 209, the ue transmits a PDU session establishment request message to the AMF. In an embodiment, an emergency indication is carried to indicate that the PDU session is specific to an emergency service.

At step 210, the AMF selects the appropriate SMF. In an embodiment, a satellite RAT and a satellite cell ID may be used for SMF selection.

In step 211 shown in fig. 2B, the AMF sends a PDU session establishment request message to the SMF.

In step 212, the amf sends a PDU session establishment response to the UE. In an embodiment, once a PDU session is established for emergency services, the UE obtains the P-CSCF address from the network and may establish an emergency call to the IMS.

In step 213, the ue sends a session initiation protocol invite (SIP INVITE) request to the IMS core, wherein the request carries an emergency indication. In an embodiment, the UE may provide its location information (e.g., cell ID) in a SIP message. In an embodiment, the P-CSCF forwards SIP INVITE to the S-CSCF to handle SIP INVITE for emergency services.

In step 214, the IMS core sends a location acquisition request to the LRF and/or LMF when the UE does not provide location information or the location information is not trusted.

In step 215, the lrf and/or LMF trigger a positioning procedure to obtain the UE location when needed. In an embodiment, the positioning procedure may involve Serving Mobile Location (SMLC) or E-SMLC, NG-RAN or UE, depending on the positioning method being used. In an embodiment, for emergency services, a cell ID is required to select the appropriate PSAP.

In step 216, the lrf and/or LMF selects an appropriate PSAP based on the UE location it obtains.

In step 217, the lrf and/or LMF returns location routing information to the IMS core, wherein the location routing information carries PSAP information and UE location.

At step 218, the ims core routes SIP INVITE to the PSAP.

In step 219, a subsequent step for completing the emergency session is performed.

In the process illustrated in fig. 2A and 2B, the satellite cell ID is used to select a PSAP for emergency services. However, in some embodiments, the satellite beams may cover a large area and may span the boundaries of multiple administrative areas (e.g., across the boundaries of two countries) such that the satellite cell ID may not accurately select the appropriate PSAP.

Thus, in some embodiments of the present invention, the CN obtains the geographic location of the UE and maps it to a cellular network location (e.g., cell ID or Tracking Area Code (TAC)) in order to accurately select a PSAP for emergency services.

Example 1:

in some embodiments, once the AMF detects that the UE is connected to the RAN through a satellite (e.g., a satellite RAT is detected during registration), the AMF may trigger a network initiated cell mapping procedure to retrieve the geographic location (e.g., GPS coordinates) of the UE and map the geographic location to a cellular network location (e.g., cell ID or TAC).

Fig. 3A and 3B show schematic diagrams of a network initiated cell mapping procedure according to an embodiment of the invention.

In steps 301 to 306, the UE performs a registration procedure with the AMF. In some embodiments, the operations in steps 301 through 306 are similar to the operations in steps 203 through 208. Details of steps 301 to 306 may be determined by reference to the paragraphs above and will not be repeated here.

In an embodiment, the AMF detects that the satellite RAT is currently in use, and then the AMF determines to trigger a network initiated cell mapping procedure. Two possible methods can be used: (a) cell mapping performed by the LMF in steps 307 to 310; and (b) cell mapping performed by the AMF in steps 311 to 314.

In step 307, the amf sends a location acquisition request to the selected LMF, wherein the location QoS (quality of service) is set to an appropriate value. In an embodiment, one or more indications may be included in the request to request the LMF to return to the cellular network location (e.g., cell ID, TAC, etc.) and/or trigger the LMF to map the geographic location to the cellular network location.

In an embodiment, in order for the LMF to obtain an accurate UE position, the AMF may set the parameter lcsqosslas in the LocationQoS IE to "Best Effort Class" or set the horizontal or vertical accuracy to the accuracy in a Global Navigation Satellite System (GNSS) positioning method. With such a location QoS setting, the LMF triggers a UE-based or UE-assisted positioning procedure to obtain the geographic location of the UE.

In an embodiment, the location acquisition request may also include a "Network Location Required" indication that requires the LMF to return to the cellular network location (e.g., cell ID, TAC, etc.), or a "geographic location map to network location" indication that requires the LMF to map the geographic location to the cellular network location.

In step 308, the lmf initiates a positioning procedure to obtain the geographic location (e.g., GPS coordinates) of the UE. In an embodiment, the positioning procedure may comprise requesting the UE to report its detected positioning measurement information, such as GNSS measurement information or GPS coordinates. In an embodiment, the LMF calculates a geographic location of the UE based on the location measurement information detected by the UE.

In step 309, when the geographic location of the UE is acquired, the LMF performs a cell mapping operation to map the geographic location to a cellular network location (e.g., a cell ID or TAC). In embodiments, knowledge or information mapping geographic locations to cellular network locations may be configured or stored in the LMF, or in other storage or network functions. In an embodiment, the LMF maps the geographic location to a cellular network location based on knowledge or information.

In step 310, the lmf sends a location acquisition response to the AMF, wherein the location acquisition response carries the mapped UE's cellular network location (e.g., cell ID).

In the following paragraphs, the method (b) cell mapping performed by the AMF will be described in steps 311 to 314.

In step 311, the AMF sends a location acquisition request to the selected LMF, with the location QoS (quality of service) set to an appropriate value.

In step 312, the LMF initiates a positioning procedure to obtain the geographic location (e.g., GPS coordinates) of the UE. In an embodiment, the positioning procedure may comprise requesting the UE to report its detected positioning measurement information, such as GNSS measurement information or GPS coordinates. In an embodiment, the LMF calculates a geographic location of the UE based on the location measurement information detected by the UE.

In step 313, the lmf sends a location acquisition response to the AMF, wherein the location acquisition response carries the geographic location of the UE.

In step 314, upon receiving the geographic location of the UE, the AMF performs a cell mapping operation to map the geographic location to a cellular network location (e.g., a cell ID or TAC). In embodiments, knowledge or information mapping geographic locations to cellular network locations may be configured or stored in an AMF, or in other storage or network functions. In an embodiment, the AMF maps the geographic location to a cellular network location based on knowledge or information.

By using method (a) (i.e., steps 307 to 310) or method (b) (i.e., steps 311 to 314), the AMF may obtain a mapped cellular network location corresponding to a relatively accurate geographic location of the UE. The AMF may use such mapped cellular network locations to select another Network Function (NF), such as an SMF, or for use in subsequent messages or procedures related to other NFs.

In step 315, the UE requests establishment of a PDU session. For example, the UE requests to establish a PDU session for emergency services. During the PDU session, the AMF uses the mapped cellular network location to select the SMF and sends the mapped cellular network location to the SMF.

In step 316, the UE establishes an IMS session for the emergency service. In this process, the mapped cellular network location is obtained by the LMF/LRF or AMF in order to select an appropriate emergency center (e.g., PSAP).

Example 2:

in some embodiments of the invention, the UE may start the positioning system (e.g., GNSS) before or after performing a registration procedure with the CN (e.g., with the AMF) via satellite access or satellite network. In some embodiments, the UE may report positioning measurement information to the CN for a short time after the registration process so that the CN may map the geographic location of the UE to the cellular network location.

Fig. 4A and 4B show schematic diagrams of a network initiated cell mapping procedure according to an embodiment of the invention.

In steps 401 to 406, the UE performs a registration procedure with the AMF. In some embodiments, the operations in steps 401 through 406 are similar to the operations in steps 203 through 208. Details of steps 401 through 406 may be determined by reference to the paragraphs above and will not be repeated here.

In an embodiment, if an emergency call is required, the UE activates a positioning system (e.g., GNSS). In an embodiment, the UE may report the detected positioning measurement information before it initiates the emergency call.

In step 407, the ue starts the positioning system. The UE may start the positioning system before or after performing the registration procedure on the network, i.e. before or after steps 401 to 406. Thus, the present invention is not limited to the embodiment shown in fig. 4A and 4B.

In step 408, the ue sends an uplink NAS transport message to the AMF, wherein the uplink NAS transport message carries a long term evolution positioning protocol (LPP) message. In an embodiment, the UE may set the positioning measurement information (e.g., GNSS measurement information or GPS coordinates) to be included in the LPP message.

In step 409, the amf forwards the LPP message sent by the UE to the selected LMF.

In an embodiment, the AMF determines to trigger a network initiated cell mapping procedure. Two possible methods can be used: (a) cell mapping performed by the LMF in steps 410 to 412; and (b) cell mapping performed by the AMF in steps 413 to 415.

Method (a): cell mapping by LMF

Similar to steps 307 to 310 of the process shown in fig. 3A and 3B, in steps 410 to 412 the AMF sends a location acquisition request to the LMF (step 410) to request the LMF to return the mapped cellular network location. In steps 410 to 412, since the UE has provided location measurement information to the LMF, the LMF may directly calculate the geographical location by using the location measurement information provided by the UE (step 411). Thus, in such embodiments, the LMF may not trigger the positioning process. Thereafter, the LMF sends a location acquisition response to the AMF, wherein the location acquisition response carries the mapped cellular network location (e.g., cell ID) of the UE (step 412).

Details of steps 410 through 412 may be determined by reference to the paragraphs above and will not be repeated here.

Method (b): cell mapping performed by AMF

Similar to steps 311 to 314 of the process shown in fig. 3A and 3B, in steps 413 to 415 the AMF sends a location acquisition request to the LMF (step 413), requesting the LMF to return to the geographical location of the UE. The LMF may directly calculate the geographic location by using the location measurement information provided by the UE and return the geographic location to the AMF (step 414). Thus, in such embodiments, the LMF may not trigger the positioning process. The AMF then maps the received geographic location to a cellular network location (e.g., cell ID or TAC) (step 415).

Details of steps 413 to 415 may be determined by reference to the paragraphs above and will not be repeated here.

By using either method (a) (i.e., steps 410 to 412) or method (b) (i.e., steps 413 to 415), the AMF may obtain a mapped cellular network location corresponding to a relatively accurate geographic location of the UE. The AMF may use such mapped cellular network locations to select another Network Function (NF), such as an SMF, or for use in subsequent messages or procedures related to other NFs.

In step 416, the UE requests to establish a PDU session. For example, the UE requests to establish a PDU session for emergency services. During the PDU session, the AMF uses the mapped cellular network location to select the SMF and sends the mapped cellular network location to the SMF.

In step 417, the UE establishes an IMS session for the emergency service. In this process, the mapped cellular network location is obtained by the LMF/LRF or AMF in order to select an appropriate emergency center (e.g., PSAP).

Example 3:

in some embodiments of the invention, the UE may start the positioning system (e.g., GNSS) before performing a registration procedure with the CN (e.g., with the AMF) via satellite access or satellite network. In some embodiments, during the registration procedure, the UE may set the location measurement information in an LPP message encapsulated in a registration request, for example, so that the CN may map the geographic location of the UE to the cellular network location.

Fig. 5A and 5B show schematic diagrams of a network initiated cell mapping procedure according to an embodiment of the invention.

In step 501, the UE activates a positioning system (e.g., GNSS).

In steps 502 to 507, the UE performs a registration procedure with the AMF. In some embodiments, the operations in steps 501 to 507 are similar to the operations in steps 203 to 208 i. The difference is that the UE may set positioning measurement information (e.g., GNSS measurement information or GPS coordinates) in the registration request message in step 502. In an embodiment, the positioning measurement information may be encapsulated in an LPP message within the registration request message.

Additional details of steps 502 through 507 may be determined by reference to the paragraphs above and will not be repeated here.

In step 508, the amf extracts positioning measurement information (e.g., GNSS measurement information or GPS coordinates) from the registration request sent by the UE.

In step 509, the AMF sends the location measurement information from the UE to the selected LMF in, for example, an LPP message.

In an embodiment, the AMF determines to trigger a network initiated cell mapping procedure. Two possible methods can be used: (a) cell mapping performed by the LMF in steps 510 to 412; and (b) cell mapping performed by the AMF in steps 513 to 515.

Method (a): cell mapping by LMF

Similar to steps 307 to 310 of the process shown in fig. 3A and 3B, in steps 510 to 512, the AMF sends a location acquisition request to the LMF (step 510) to request the LMF to return the mapped cellular network location. In steps 510 to 512, since the UE has provided location measurement information to the LMF, the LMF can directly calculate the geographical location by using the location measurement information provided by the UE (step 511). Thus, in such embodiments, the LMF may not trigger the positioning process. Thereafter, the LMF sends a location acquisition response to the AMF, wherein the location acquisition response carries the mapped cellular network location (e.g., cell ID) of the UE (step 512).

Details of steps 510 through 512 may be determined by reference to the paragraphs above and will not be repeated here.

Method (b): cell mapping performed by AMF

Similar to steps 311 to 314 of the process shown in fig. 3A and 3B, in steps 513 to 515, the AMF sends a location acquisition request to the LMF (step 513), requesting the LMF to return to the geographic location of the UE. The LMF may directly calculate the geographic location by using the location measurement information provided by the UE and return the geographic location to the AMF (step 514). Thus, in such embodiments, the LMF may not trigger the positioning process. The AMF then maps the received geographic location to a cellular network location (e.g., cell ID or TAC) (step 515).

Details of steps 513 through 515 may be determined by reference to the paragraphs above and will not be repeated here.

By using either method (a) (i.e., steps 510 to 512) or method (b) (i.e., steps 513 to 515), the AMF may obtain a mapped cellular network location corresponding to the relatively accurate geographic location of the UE. The AMF may use such mapped cellular network locations to select another Network Function (NF), such as an SMF, or for use in subsequent messages or procedures related to other NFs.

In step 516, the UE requests to establish a PDU session. For example, the UE requests to establish a PDU session for emergency services. During the PDU session, the AMF uses the mapped cellular network location to select the SMF and sends the mapped cellular network location to the SMF.

In step 517, the UE establishes an IMS session for the emergency service. In this process, the mapped cellular network location is obtained by the LMF/LRF or AMF in order to select an appropriate emergency center (e.g., PSAP).

Fig. 6 relates to a schematic diagram of a terminal 60 (e.g., a terminal node or terminal device) according to an embodiment of the invention. The terminal 60 may be a User Equipment (UE), a mobile phone, a laptop computer, a tablet computer, an electronic book, or a portable computer system, and is not limited thereto. The terminal 60 may include a processor 600, such as a microprocessor or an Application Specific Integrated Circuit (ASIC), a storage unit 610, and a communication unit 620. The storage unit 610 may be any data storage device that stores program code 612 that is accessed and executed by the processor 600. Examples of the storage unit 612 include, but are not limited to, a Subscriber Identity Module (SIM), a Read Only Memory (ROM), a flash memory, a Random Access Memory (RAM), a hard disk, and an optical data storage device. The communication unit 620 may be a transceiver and is configured to transmit and receive signals (e.g., messages or packets) according to the processing result of the processor 600 i. In an embodiment, communication unit 620 transmits and receives signals via at least one antenna 622.

In an embodiment, the storage unit 610 and the program code 612 may be omitted, and the processor 600 may include a storage unit having stored program code.

The processor 600 may implement any of the steps of the exemplary embodiments on the terminal 60, for example, by executing the program code 612.

The communication unit 620 may be a transceiver. The communication unit 620 may alternatively or additionally combine a transmitting unit and a receiving unit configured to transmit and receive signals to and from the radio network node, respectively.

In some embodiments, the terminal 60 may be configured to perform the operations of the UE described above. In some embodiments, processor 600 and communication unit 620 cooperate to perform the above-described operations. For example, the processor 600 performs operations and transmits or receives signals through the communication unit 620.

Fig. 7 relates to a schematic diagram of a wireless network node 70 (e.g., a location management node or a location management device) according to an embodiment of the invention. The radio network node 70 may be a satellite, a Base Station (BS), a network entity, a mobility management entity (Mobility Management Entity, MME), a Serving Gateway (S-GW), a packet data network (Packet Data Network, P-GW), a radio access network (radio access network, RAN), a next generation RAN (NG-RAN), a data network, a core network, or a Radio Network Controller (RNC), and is not limited herein. Further, the radio network node 70 may comprise (perform) at least one network function, such as an access and mobility management function (AMF), a Session Management Function (SMF), a Location Management Function (LMF), a location acquisition function (LRF), a user location function (UPF), a Policy Control Function (PCF), an Application Function (AF), etc. The radio network node 70 may comprise a processor 700, e.g. a microprocessor or ASIC, a storage unit 710 and a communication unit 720. The memory unit 710 may be any data storage device that stores program code 712 that is accessed and executed by the processor 700. Examples of storage unit 712 include, but are not limited to, a SIM, ROM, flash memory, RAM, hard disk, and optical data storage devices. The communication unit 720 may be a transceiver and is configured to transmit and receive signals (e.g., messages or packets) according to the processing result of the processor 700. In an example, the communication unit 720 transmits and receives signals via at least one antenna 722.

In an embodiment, the storage unit 710 and the program code 712 may be omitted. The processor 700 may include a memory unit with stored program code.

Processor 700 may implement any of the steps described in the exemplary embodiments on wireless network node 70, for example, by executing program code 712.

The communication unit 720 may be a transceiver. The communication unit 720 may alternatively or additionally combine a transmitting unit and a receiving unit configured to transmit and receive signals to and from the terminal, respectively.

In some embodiments, the wireless network node 70 may be configured to perform the operations of the LMF and/or LRF described above. In some embodiments, processor 700 and communication unit 720 cooperate to perform the operations described above. For example, the processor 700 performs operations and transmits or receives signals through the communication unit 720.

Fig. 8 relates to a schematic diagram of a wireless network node 80 (e.g., an access management node or access management device) according to an embodiment of the invention. The wireless network node 80 may be a satellite, a Base Station (BS), a network entity, a Mobility Management Entity (MME), a serving gateway (S-GW), a Packet Data Network (PDN) gateway (P-GW), a Radio Access Network (RAN), a next generation RAN (NG-RAN), a data network, a core network, or a Radio Network Controller (RNC), and is not limited herein. Further, the wireless network node 80 may include (perform) at least one network function, such as an access and mobility management function (AMF), a Session Management Function (SMF), a user location function (UPF), a Policy Control Function (PCF), an Application Function (AF), etc. The radio network node 80 may comprise a processor 800, such as a microprocessor or ASIC, a storage unit 810 and a communication unit 820. The memory unit 810 may be any data storage device that stores program code 812 that is accessed and executed by the processor 800. Examples of storage unit 812 include, but are not limited to, SIM, ROM, flash memory, RAM, hard disk, and optical data storage devices. The communication unit 820 may be a transceiver and is configured to transmit and receive signals (e.g., messages or packets) according to the processing result of the processor 800. In an example, communication unit 820 transmits and receives signals via at least one antenna 822.

In an embodiment, the storage unit 810 and the program code 812 may be omitted. Processor 800 may include a memory unit with stored program code.

Processor 800 may implement any of the steps described in the exemplary embodiments on wireless network node 80, for example, by executing program code 812.

The communication unit 820 may be a transceiver. The communication unit 820 may alternatively or additionally combine a transmitting unit and a receiving unit configured to transmit and receive signals to and from a wireless terminal (e.g., user equipment), respectively.

In some embodiments, the radio network node 80 may be configured to perform the operations of the AMF described above. In some embodiments, processor 800 and communication unit 820 cooperate to perform the above-described operations. For example, the processor 800 performs operations and transmits or receives signals through the communication unit 820.

Fig. 9 illustrates a wireless communication method 900 according to an embodiment of the invention. In an embodiment, the wireless communication method 900 may be performed by using a location management node (e.g., a location management device). In an embodiment, the location management node may be implemented by using the above-described wireless network node 70, but is not limited thereto.

In an embodiment, the wireless communication method 900 includes operations 910 and 920.

Operation 910 comprises receiving, by a location management node, positioning measurement information from a terminal (e.g., UE). In an embodiment, a terminal accesses a satellite network.

Operation 920 comprises calculating, by the location management node, a geographic location of the terminal based on the positioning measurement information. In an embodiment, the geographical location can be used to obtain the cellular network location of the terminal.

In this way, the actual geographical location of the terminal may be utilized to obtain the cellular network location of the terminal accessing the satellite network, so that a more accurate cellular network location of the terminal may be used for related services (e.g., emergency services).

In an embodiment, positioning measurement information is received by an access management node (e.g., AMF). In an embodiment, the access management node receives the positioning measurement information via a registration message (e.g., the registration request in step 502 described above) or an uplink NAS transport message (e.g., the uplink NAS transport message in step 408 described above).

In an embodiment, the wireless communication method 900 may further include the operations of receiving, by the location management node, a location acquisition request from the access management node; mapping, by the location management node, the geographic location to a cellular network location; and transmitting, by the location management node, the mapped cellular network location to the access management node.

In an embodiment, the location acquisition request includes at least one of an indication that a cellular network location is required or an indication that a geographic location is mapped to a cellular network location.

In an alternative embodiment, the wireless communication method 900 may further include the operations of receiving, by the location management node, a location acquisition request from the access management node; and transmitting, by the location management node, the geographic location to the access management node.

Details of this may be determined with reference to the paragraphs above and are not repeated here.

Fig. 10 illustrates a wireless communication method 1000 according to an embodiment of the invention. In an embodiment, the wireless communication method 1000 may be performed by using a location management node (e.g., a location management device). In an embodiment, the location management node may be implemented by using the above-described wireless network node 70, but is not limited thereto.

In an embodiment, the wireless communication method 1000 includes operations 1010 through 1030.

Operation 1010 comprises receiving, by a location management node, a location acquisition request from an access management node (e.g., AMF).

Operation 1020 comprises mapping, by the location management node, the geographic location to a cellular network location.

Operation 1030 comprises transmitting, by the location management node, the mapped cellular network location to the access management node. In an embodiment, the cellular network location corresponds to a terminal (e.g., UE) accessing a satellite network.

In an embodiment, the cellular network location can be used to establish an emergency session for the terminal, but is not limited thereto.

In an embodiment, the wireless communication method 1000 may further include an operation of receiving, by the location management node, location measurement information from the terminal by initiating a location procedure; the location management node calculates the geographic location of the terminal based on the location measurement information.

In an embodiment, the wireless communication method 1000 may further include the operation of receiving, by the location management node, location measurement information from the access management node via LPP messages (e.g., LPP messages in steps 409 and 509).

Fig. 11 illustrates a wireless communication method 1100 according to an embodiment of the invention. In an embodiment, the wireless communication method 1100 may be performed by using an access management node (e.g., an access management device). In an embodiment, the access management node may be implemented by using the above-described wireless network node 80, but is not limited thereto.

In an embodiment, the wireless communication method 1100 includes operations 1110 and 1120i.

Operation 1110 comprises sending, by the access management node, a location acquisition request to a location management node (e.g., LMF and/or LRF).

Operation 1120 comprises receiving, by the access management node, a cellular network location from the location management node. In an embodiment, the cellular network location corresponds to a terminal (e.g., UE) accessing a satellite network.

In this way, a more accurate cellular network location of the terminal may be obtained and used for related services (e.g., emergency services).

In an embodiment, the wireless communication method 1100 may further comprise the operations of receiving, by the access management node, positioning measurement information from the terminal; and transmitting, by the access management node, the positioning measurement information to the location management node.

In an embodiment, the positioning measurement information is received via a registration message or an uplink NAS transport message (e.g., the uplink NAS transport message in step 408 described above).

In an embodiment, the location measurement information is sent to the location management node in an LPP message (e.g., LPP messages in steps 409 and 509).

In an embodiment, the cellular network location can be used to establish an emergency session for the terminal.

Fig. 12 illustrates a wireless communication method 1200 according to an embodiment of the invention. In an embodiment, the wireless communication method 1200 may be performed by using an access management node (e.g., an access management device). In an embodiment, the access management node may be implemented by using the above-described wireless network node 80, but is not limited thereto.

In an embodiment, the wireless communication method 1200 includes operations 1210 through 1230.

Operation 1210 comprises sending, by the access management node, a location acquisition request to a location management node (e.g., LMF and/or LRF).

Operation 1220 comprises receiving, by the access management node, a geographic location from the location management node.

Operation 1230 comprises mapping, by the access management node, the geographic location to a cellular network location. In an embodiment, the cellular network location corresponds to a terminal (e.g., UE) accessing a satellite network.

Fig. 13 illustrates a wireless communication method 1300 according to an embodiment of the invention. In an embodiment, the wireless communication method 1300 may be performed by using a terminal (e.g., a terminal node or terminal device). In the embodiment, the terminal may be implemented by using the above-described terminal 60, but is not limited thereto.

In an embodiment, the wireless communication method 1300 includes operations 1310 and 1320i.

Operation 1310 comprises obtaining, by a terminal, positioning measurement information in response to the terminal accessing a satellite network.

Operation 1320 comprises transmitting, by the terminal, location measurement information to a network node (e.g., AMF or LMF). In an embodiment, the positioning measurement information can be used to obtain the cellular network location of the terminal.

In this way, the actual geographic location of the terminal may be used to obtain the cellular network location of the terminal accessing the satellite network, so that a more accurate cellular network location of the terminal may be used for related services (e.g., emergency services).

In an embodiment, the positioning measurement information is acquired in response to an emergency service required by the terminal.

In an embodiment, the wireless communication method 900 may further include receiving, by the location management node, a location acquisition request from the access management node; mapping, by the location management node, the geographic location to a cellular network location; and an operation of transmitting, by the location management node, the mapped cellular network location to the access management node.

In an embodiment, the positioning measurement information is encapsulated in a long term evolution positioning protocol, LPP, message.

While various embodiments of the present invention have been described above, it should be understood that they have been presented by way of example only, and not limitation. Likewise, the various figures may depict example architectures or configurations provided to enable those of ordinary skill in the art to understand the exemplary features and functions of the invention. However, those skilled in the art will appreciate that the invention is not limited to the example architectures or configurations shown, but may be implemented using a variety of alternative architectures and configurations. In addition, one or more features of one embodiment may be combined with one or more features of another embodiment described herein, as will be appreciated by those of ordinary skill in the art. Thus, the breadth and scope of the present invention should not be limited by any of the above-described exemplary embodiments.

It should also be appreciated that any reference herein to an element using a designation such as "first," "second," etc. generally does not limit the number or order of those elements. Rather, these designations may be used herein as a convenient means of distinguishing between two or more elements or instances of an element. Thus, reference to first and second elements does not mean that only two elements can be employed, or that the first element must somehow precede the second element.

In addition, those of ordinary skill in the art would understand that information and signals may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, and symbols, for example, that may be referenced throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

Those of ordinary skill in the art will further appreciate that any of the various illustrative logical blocks, modules, processors, devices, circuits, methods, and functions described in connection with the aspects disclosed herein may be implemented with electronic hardware (e.g., digital, analog, or a combination of both), firmware, various forms of program or design code containing instructions (which may be referred to herein as "software" or "software modules" for convenience) or any combination of these techniques.

To clearly illustrate this interchangeability of hardware, firmware, and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware, firmware, or software, or a combination of such techniques depends upon the particular application and design constraints imposed on the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention. According to various embodiments, processors, devices, components, circuits, structures, machines, modules, etc. may be configured to perform one or more of the functions described herein. The term "configured to" or "configured for" as used herein with respect to a particular operation or function refers to a processor, device, component, circuit, structure, machine, module, etc. that is physically constructed, programmed and/or arranged to perform the specified operation or function.

Moreover, those of ordinary skill in the art will appreciate that the various illustrative logical blocks, modules, devices, components, and circuits described herein may be implemented in or performed with an Integrated Circuit (IC) comprising a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, or any combination thereof. The logic, modules, and circuitry may further include an antenna and/or transceiver to communicate with various components within the network or within the device. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other suitable configuration to perform the functions described herein. If implemented in software, the functions may be stored on a computer-readable medium as one or more instructions or code. Thus, the steps of a method or algorithm disclosed herein may be implemented as software stored on a computer readable medium.

Computer-readable media includes both computer storage media and communication media including any medium that enables transmission of a computer program or code from one place to another. A storage media may be any available media that can be accessed by a computer. By way of example, and not limitation, such computer-readable media can comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, and any other medium that can be used to store desired program code in the form of instructions or data structures and that can be accessed by a computer.

As used herein, the term "module" refers to software, firmware, hardware, and any combination of these elements to perform the relevant functions described herein. In addition, for purposes of discussion, the various modules are described as discrete modules; however, it will be apparent to one of ordinary skill in the art that two or more modules may be combined to form a single module that performs the relevant functions in accordance with embodiments of the invention.

In addition, memory or other storage and communication components may be employed in embodiments of the present invention. It will be appreciated that for clarity, the above description has described embodiments of the invention with reference to different functional units and processors. It will be apparent, however, that any suitable distribution of functionality between different functional units, processing logic elements or domains may be used without detracting from the invention. For example, functions illustrated as being performed by separate processing logic elements or controllers may be performed by the same processing logic elements or controllers. Thus, references to specific functional units are only references to suitable devices for providing the described functionality rather than indicative of a strict logical or physical structure or organization.

Various modifications to the embodiments described herein will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the scope of the disclosure. Thus, the present disclosure is not intended to be limited to the implementations shown herein but is to be accorded the widest scope consistent with the novel features and principles as disclosed herein, as set forth in the following claims.

Claims

1. A method of wireless communication, comprising:

the method comprises the steps that a position management node receives positioning measurement information from a terminal, wherein the terminal is accessed to a satellite network; and

the position management node calculates the geographic position of the terminal according to the positioning measurement information;

wherein the geographical location can be used to obtain a cellular network location of the terminal.

2. The wireless communication method of claim 1, wherein the positioning measurement information is received by an access management node.

3. The wireless communication method of claim 2, wherein the access management node receives the positioning measurement information via a registration message or an uplink non-access stratum, NAS, transport message.

4. A wireless communication method according to any of claims 1 to 3, wherein the location management node receives the location measurement information from an access management node by means of a long term evolution positioning protocol, LPP, message.

5. The wireless communication method of any of claims 1-4, wherein the positioning measurement information comprises at least one of global navigation satellite system, GNSS, measurement information or global positioning system, GPS, coordinates.

6. The wireless communication method according to any one of claims 1 to 5, further comprising:

the position management node receives a position acquisition request from an access management node;

the location management node maps the geographic location to the cellular network location; and

the location management node sends the mapped cellular network location to the access management node.

7. The wireless communication method of claim 6, wherein the location acquisition request includes at least one of an indication that a cellular network location is required or an indication that a geographic location is mapped to a cellular network location.

8. The wireless communication method according to any one of claims 1 to 7, wherein the cellular network location comprises at least one of a cell identification, ID, or a tracking area code, TAC.

9. The wireless communication method according to any one of claims 1 to 5 and 8, further comprising:

the position management node receives a position acquisition request from an access management node; and

and the position management node sends the geographic position to the access management node.

10. A method of wireless communication, comprising:

the position management node receives a position acquisition request from the access management node;

the location management node maps a geographic location to a cellular network location; and

the location management node sending the mapped cellular network location to the access management node;

wherein the cellular network location corresponds to a terminal accessing a satellite network.

11. The wireless communication method of claim 10, wherein the location acquisition request includes at least one of an indication that a cellular network location is required or an indication that a geographic location is mapped to a cellular network location.

12. The wireless communication method according to claim 10 or 11, wherein the cellular network location comprises at least one of a cell identification, ID, or a tracking area code, TAC.

13. A method of wireless communication according to any of claims 10 to 12, wherein the cellular network location is operable to establish an emergency session for the terminal.

14. The wireless communication method according to any one of claims 10 to 13, further comprising:

the position management node receives positioning measurement information from the terminal by initiating a positioning process; and

and the position management node calculates the geographic position of the terminal according to the positioning measurement information.

15. The wireless communication method of any of claims 10 to 14, wherein the positioning measurement information comprises at least one of global navigation satellite system, GNSS, measurement information or global positioning system, GPS, coordinates.

16. The wireless communication method according to any one of claims 10 to 14, further comprising:

the location management node receives the location measurement information from the access management node via a long term evolution positioning protocol, LPP, message.

17. A method of wireless communication, comprising:

the access management node sends a position acquisition request to the position management node; and

the access management node receiving a cellular network location from the location management node;

18. The wireless communication method of claim 17, wherein the location acquisition request includes at least one of an indication that a cellular network location is required or an indication that a geographic location is mapped to a cellular network location.

19. The wireless communication method according to claim 17 or 18, further comprising:

the access management node receives positioning measurement information from the terminal; and

the access management node sends the positioning measurement information to the position management node;

wherein the geographic location corresponds to the positioning measurement information.

20. The wireless communication method of claim 19, wherein the positioning measurement information is received via a registration message or an uplink non-access stratum, NAS, transport message.

21. The wireless communication method according to claim 19 or 20, wherein the positioning measurement information is sent to the location management node in the form of a long term evolution positioning protocol, LPP, message.

22. The wireless communication method of any of claims 17 to 21, wherein the positioning measurement information comprises at least one of global navigation satellite system, GNSS, measurement information or global positioning system, GPS, coordinates.

23. A method of wireless communication according to any of claims 17 to 22, wherein the cellular network location is operable to establish an emergency session for the terminal.

24. The wireless communication method according to any one of claims 17 to 23, wherein the cellular network location comprises at least one of a cell identification, ID, or a tracking area code, TAC.

25. A method of wireless communication, comprising:

the access management node sends a position acquisition request to the position management node;

the access management node receiving a geographic location from the location management node; and

the access management node mapping the geographic location to a cellular network location;

26. The wireless communication method of claim 25, further comprising:

27. The wireless communications method of claim 26, wherein the positioning measurement information is received via a registration message or an uplink non-access stratum, NAS, transport message.

28. A method of wireless communication according to claim 26 or 27, wherein the location measurement information is sent to the location management node in the form of a long term evolution positioning protocol, LPP, message.

29. The wireless communication method of any of claims 25-28, wherein the positioning measurement information comprises at least one of global navigation satellite system, GNSS, measurement information or global positioning system, GPS, coordinates.

30. A method of wireless communication according to any of claims 25 to 29, wherein the cellular network location is operable to establish an emergency session for the terminal.

31. The wireless communication method according to any one of claims 25 to 30, wherein the cellular network location comprises at least one of a cell identification, ID, or a tracking area code, TAC.

32. A method of wireless communication, comprising:

a terminal obtaining positioning measurement information in response to the terminal accessing a satellite network; and

the terminal sends the positioning measurement information to a network node;

wherein the positioning measurement information can be used to obtain a cellular network location of the terminal.

33. The wireless communication method of claim 34, wherein the positioning measurement information is obtained in response to emergency services required by the terminal.

34. The wireless communication method according to claim 32 or 33, wherein the positioning measurement information is sent to an access management node by means of a registration message or an uplink non-access stratum, NAS, transport message.

35. The wireless communication method according to any of claims 32 to 34, wherein the positioning measurement information is encapsulated in a long term evolution positioning protocol, LPP, message.

36. The wireless communication method of any of claims 32 to 35, wherein the positioning measurement information comprises at least one of global navigation satellite system, GNSS, measurement information or global positioning system, GPS, coordinates.

37. The wireless communication method of any of claims 32 to 36, wherein the cellular network location comprises at least one of a cell identification, ID, or a tracking area code, TAC.

38. A location management node, comprising:

a communication unit; and

a processor configured to:

receiving positioning measurement information from a terminal, wherein the terminal accesses a satellite network; and

calculating the geographic position of the terminal according to the positioning measurement information;

39. The location management node of claim 38, wherein the processor is further configured to perform the wireless communication method of any of claims 2 to 9.

40. A location management node, comprising:

a communication unit; and

a processor configured to:

receiving a location acquisition request from an access management node;

mapping the geographic location to a cellular network location; and

Transmitting the mapped cellular network location to the access management node;

41. The location management node of claim 40, wherein the processor is further configured to perform the wireless communication method of any of claims 11 to 16.

42. An access management node, comprising:

a communication unit; and

a processor configured to:

sending a position acquisition request to a position management node; and

receiving a cellular network location from the location management node;

43. The access management node of claim 42 wherein the processor is further configured to perform the wireless communication method of any one of claims 18 to 24.

44. An access management node, comprising:

a communication unit; and

a processor configured to:

sending a position acquisition request to a position management node;

receiving a geographic location from the location management node; and

mapping the geographic location to a cellular network location;

45. The access management node of claim 44 wherein the processor is further configured to perform the wireless communication method of any one of claims 26 to 31.

46. A terminal, comprising:

a communication unit; and

a processor configured to:

acquiring positioning measurement information in response to the terminal accessing a satellite network; and

transmitting the positioning measurement information;

47. The terminal of claim 46, wherein the processor is further configured to perform the wireless communication method of any of claims 33 to 37.

48. A computer program product comprising computer readable program code stored thereon which, when executed by a processor, causes the processor to implement a wireless communication method according to any of claims 1 to 37.