CN111107483B

CN111107483B - Method, device and system for changing positioning service authority

Info

Publication number: CN111107483B
Application number: CN201811178620.9A
Authority: CN
Inventors: 毕晓宇; 唐廷芳; 全海洋
Original assignee: Telecommunications Science and Technology Research Institute Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2018-10-10
Filing date: 2018-10-10
Publication date: 2021-03-09
Anticipated expiration: 2038-10-10
Also published as: WO2020073817A1; CN111107483A

Abstract

The application discloses a method, a device and a system for changing a location service authority, which comprise the following steps: a positioning server receives a first positioning service authority changing message, wherein the first positioning service authority changing message is used for requesting to change the positioning service authority of a target terminal; and the positioning server sends a second positioning service permission changing message to a core network element, wherein the second positioning service permission changing message carries the positioning service permission information after the target terminal is changed. The method provided by the application can realize the updating of the terminal positioning service authority.

Description

Method, device and system for changing positioning service authority

Technical Field

The present invention relates to the field of wireless communications technologies, and in particular, to a method, an apparatus, and a system for changing a location service permission.

Background

Location Services (LCS) technology can implement the development and application of Location Services, and can also be used for Services such as charging, lawful interception, emergency call, and the like. In a Third Generation Partnership Project (3 GPP) network, position location of a user can be achieved by LCS technology. Currently, the Positioning methods available in the 3GPP standard include Global Positioning System (GPS) Positioning, satellite-enhanced System Positioning, network-assisted Positioning, Positioning methods based on information of a terminal (UE, also referred to as User Equipment), Positioning methods using a sensor, and the like.

The location information obtained by LCS includes geographical location information, speed, urban location, quality of service, etc. For some positioning methods, the UE may receive assistance data broadcasted by the network side and perform positioning calculation by itself using the assistance data, which is usually encrypted by one or more keys.

Taking a fourth generation network positioning system as an example, the distribution process of the key of the auxiliary data is as follows: an Evolved Serving Mobile Location Center (E-SMLC) sending a key data message carrying one or more keys for encrypting broadcasted assistance data to a Mobility Management node (MME), wherein a validity period, a set of applicable tracking areas, and a type of key may be set corresponding to each key; the MME receives and stores the key; the UE sends an attach request or Tracking Area Update (TAU) request to a base station (eNodeB), including an indication of a requested key; the base station receives the attachment request or the TAU request and forwards the attachment request or the TAU request to the MME; and after receiving the attachment request or the TAU request, the MME returns attachment acceptance or TAU acceptance to the base station. After the UE receives the attach accept or TAU accept, the UE may start decrypting the broadcasted assistance data using the key once the validity period of the key has started and the UE is currently in the applicable tracking area. The UE stops using the key when entering a tracking area that is not suitable for the key. When the validity period of the key has expired, the UE stops using and deletes the key. When the validity period expires, the MME deletes all information of the key.

In the key distribution process, not all UEs attached to the network have the right to use the key, and the network needs to identify the UE right and then sends the key to the UE. The UE can have different authorities for signing LCS services, meanwhile, the UE signing authority can be changed temporarily under certain conditions, after the authority is changed, the key of the UE is directly changed, and if dynamic management of the UE authority is lacked, the UE receives the key inconsistent with the authority of the UE or the UE which is not signed can also receive the key.

Therefore, a scheme for changing the UE location service permission is urgently needed for the location service system.

Disclosure of Invention

The embodiment of the application provides a method, a device and a system for distributing a positioning service key, which are used for updating a terminal positioning service authority.

In a first aspect, a method for updating location service permissions is provided, including: a positioning server receives a first positioning service authority changing message, wherein the first positioning service authority changing message is used for requesting to change the positioning service authority of a target terminal; and the positioning server sends a second positioning service permission changing message to a core network element, wherein the second positioning service permission changing message carries the positioning service permission information after the target terminal is changed.

Optionally, after the location server receives the first location service right change message, the method further includes: the positioning server sends a positioning service permission change indication message to a user signing information server, wherein the positioning service permission change indication message is used for indicating the user signing information server to determine the positioning service permission after the target terminal is changed; and the positioning server receives a positioning service permission change confirmation message sent by the user subscription information server, wherein the positioning service permission change confirmation message carries the positioning service permission information after the target terminal is changed.

Optionally, after the location server receives the first location service right change message, the method further includes: and the positioning server determines the positioning service authority information after the target terminal is changed according to the first positioning service authority change message and generates a key corresponding to the positioning service authority after the target terminal is changed.

Optionally, the receiving, by the location server, a first location service permission change message includes: the positioning server receives a first positioning service authority change message sent by the target terminal through an application layer; the positioning server sends a second positioning service permission change message to a core network element, including: and the positioning server sends a positioning service permission change message to the core network element, wherein the positioning service permission change message is used for indicating the core network element to store the positioning service permission information after the target terminal is changed and a key corresponding to the positioning service permission after the target terminal is changed.

Optionally, the receiving, by the location server, a first location service permission change message includes: the positioning server receives a first positioning service permission change message from the core network element, wherein the first positioning service permission change message is sent after the core network element receives an attachment request message or a tracking area update request message of the target terminal, the attachment request message or the tracking area update request message carries positioning service permission change indication information, and the positioning service permission change indication information is used for indicating to change the positioning service permission of the target terminal; the positioning server sends a second positioning service permission change message to a core network element, including: and the positioning server sends a second positioning service permission change message to the core network element, wherein the second positioning service permission change message is used for indicating the core network element to store the positioning service permission information after the target terminal is changed and a key corresponding to the positioning service permission after the target terminal is changed.

Optionally, after the positioning server receives the first positioning service right change message, the method further includes: and the positioning server verifies the integrity of the first positioning service permission change message, if the verification is passed and the user is allowed to carry out positioning service permission change, the positioning service permission after the target terminal is changed is determined, and a key corresponding to the positioning service permission after the target terminal is changed is generated.

Optionally, the first positioning service permission change message is sent after the core network element determines that a new key needs to be generated for the target terminal; after the location server receives the first location service permission change message, the method further comprises the following steps: the positioning server generates a key corresponding to the positioning service authority changed by the target terminal for the target terminal according to the first positioning service authority changing message, wherein the key is used for decrypting broadcasted network auxiliary data; the second location service permission change message sent by the location server to the core network element is used for indicating the core network element to store the location service permission information after the target terminal is changed and a key corresponding to the location service permission after the target terminal is changed.

Optionally, after the location server receives the first location service right change message, the method further includes: the positioning server sends a positioning service permission change indication message to a service entity, wherein the positioning service permission change indication message is used for indicating the service entity to determine the positioning service permission changed by the target terminal and generate a key corresponding to the positioning service permission changed by the target terminal; and the positioning server receives a positioning service permission change response message sent by the service entity, wherein the positioning service permission change response message is used for indicating the positioning server to store the positioning service permission information after the target terminal is changed and a key corresponding to the positioning service permission after the target terminal is changed.

Optionally, the receiving, by the location server, a first location service permission change message includes: the positioning server receives a first positioning service permission change message which is from a user subscription information server and carries positioning service permission information after the target terminal is changed, the first positioning service permission change message is sent after the user subscription information server changes the positioning service permission of the target terminal according to a positioning service permission change indication message from a core network element, the positioning service permission change indication message is sent after the core network element receives an attachment request message or a tracking area update request message from the target terminal, the attachment request message or the tracking area update request message carries positioning service permission change indication information, and the positioning service permission change indication information is used for indicating to change the positioning service permission of the target terminal.

Optionally, after the location server receives the first location service right change message, the method further includes: the positioning server sends a first positioning service permission changing message to the service entity, wherein the first positioning service permission changing message carries positioning service permission information after the target terminal is changed, and the first positioning service permission changing message is used for indicating the service entity to generate a key corresponding to the positioning service permission after the target terminal is changed; and the positioning server receives a first positioning service permission change response message sent by the service entity, wherein the first positioning service permission change response message is used for indicating the positioning server to store a key corresponding to the positioning service permission changed by the target terminal.

Optionally, the receiving, by the location server, a first location service permission change message includes: the positioning server receives a first positioning service permission changing message from a service entity, wherein the first positioning service permission changing message is sent after the service entity receives a positioning service permission changing indication message sent by a target terminal through an application layer and carries out positioning service permission changing on the target terminal, and the first positioning service permission changing message is used for indicating the positioning server to store the positioning service permission changed by the target terminal and generating a key corresponding to the positioning service permission changed by the target terminal; and the positioning server sends a second positioning service permission change message to a user signing information server, wherein the second positioning service permission change message carries the positioning service permission information after the target terminal is changed, and the second positioning service permission change message is used for indicating the user signing information server to store the positioning service permission after the target terminal is changed.

Optionally, after the positioning server sends the second location service permission change message to the user subscription information server, the method further includes: and the positioning server receives a positioning service permission change confirmation message sent by the user subscription information server, wherein the positioning service permission change confirmation message is used for indicating that the user subscription information server stores the positioning service permission after the target terminal is changed and a key corresponding to the positioning service permission after the target terminal is changed.

Optionally, the core network element includes an AMF or an MME.

Optionally, the user subscription information server comprises a UDM or a HSS.

Optionally, the location service permission information after the change of the target terminal includes: one or more keys corresponding to the changed location service rights of the target terminal, the one or more keys being used for decrypting broadcasted network assistance data.

Optionally, the location service permission information after the target terminal is changed further includes: a validity period; tracking area indication information used; key type indication information.

Optionally, the first location service right change message carries one or more of the following information: change instruction information used for indicating that the positioning service authority is changed; change reason indication information for indicating the reason for the change of the positioning service authority; the time limit information of the change is used for indicating temporary change or permanent change, and the time limit information of the change indicates that the validity period of the temporary change is included when the temporary change is carried out; and the service type indicating information is used for indicating the target terminal to position the service permission change application to be a temporary application or a permanent application.

Optionally, the location server is an LMF, and the core network element is an AMF or a UDM; or the positioning server is E-SMLC, and the core network element is MME or HSS.

In a second aspect, a method for updating location service permissions is provided, including: a core network element receives a positioning service authority changing message from a positioning server, wherein the positioning service authority changing message carries positioning service authority information changed by a target terminal; the core network element informs the target terminal that the positioning service authority is changed; and the core network element receives a first request message sent by the target terminal according to the notification of the core network element, and sends a first response message to the target terminal, wherein the first response message carries the positioning service permission information after the target terminal is changed.

Optionally, the notifying, by the network element of the core network, that the location service authority of the target terminal is changed includes: the core network element indicates the service base station of the target terminal to send a system broadcast message, and the system broadcast message carries the identification of the target terminal and positioning service permission change indication information; or, the core network element instructs the serving base station of the target terminal to send a paging message, where the paging message carries an identifier of the target terminal and positioning service permission change instruction information; and the positioning service permission change indication information is used for indicating that the positioning service permission of the target terminal is changed.

Optionally, the first request message is an attach request message, and the first response message is an attach accept message; or, the first request message is a tracking area update request message, and the first response message is a tracking area update accept message.

Optionally, the core network element is an MME, and the location server is an E-SMLC; or, the network element of the core network is an AMF, and the location server is an LMF.

In a third aspect, a method for updating location service permissions is provided, including: a core network element receives a positioning service permission change message from a positioning server, wherein the positioning service permission change message carries positioning service permission information after a target terminal is changed and a key corresponding to the positioning service permission after the target terminal is changed, and the positioning service permission change message is used for indicating the core network element to store the positioning service permission after the target terminal is changed and the key corresponding to the positioning service permission after the target terminal is changed; and the core network element sends a positioning service authority configuration message to the target terminal, wherein the positioning service authority configuration message carries the positioning service authority information changed by the target terminal.

Optionally, the network element of the core network is an AMF, and the location server is an LMF.

In a fourth aspect, a method for updating location service permissions is provided, including: a core network element receives a first request message from a target terminal; the core network element sends a positioning service permission change indication message to a user subscription information server, wherein the positioning service permission change indication message is used for requesting to acquire positioning service permission information changed by the target terminal; the core network element receives a positioning service permission change confirmation message sent by the user subscription information server, wherein the positioning service permission change confirmation message carries the positioning service permission after the target terminal is changed and a key corresponding to the positioning service permission after the target terminal is changed, and the positioning service permission change confirmation message is used for indicating the core network element to store the positioning service permission after the target terminal is changed and the key corresponding to the positioning service permission after the target terminal is changed; and the core network element sends a first response message to the target terminal, wherein the first response message carries a key corresponding to the positioning service authority changed by the target terminal.

Optionally, the location service permission change confirmation message is sent by the user subscription information server after the location service permission information changed by the target terminal is acquired from a service entity according to the received location service permission change indication message.

Optionally, the core network element is an AMF, the location server is an LMF, and the user subscription information server is an UDM; or, the core network element is an MME, the positioning server is an E-SMLC, and the user subscription information server is an HSS.

In a fifth aspect, a location service system is provided, including: the positioning server is used for receiving a first positioning service authority changing message, and the first positioning service authority changing message is used for requesting to change the positioning service authority of a target terminal; a core network element, configured to receive a second location service permission change message sent by the location server, where the second location service permission change message carries location service permission information after the target terminal is changed; and the positioning server is also used for sending a second positioning service permission change message to the core network element.

Optionally, the location service system further includes: the user subscription information server is used for receiving a positioning service permission change indication message sent by the positioning server, wherein the positioning service permission change indication message is used for indicating the user subscription information server to determine the positioning service permission after the target terminal is changed; and the user subscription information server is also used for sending a positioning service permission change confirmation message to the positioning server, wherein the positioning service permission change confirmation message carries the positioning service permission information after the target terminal is changed.

Optionally, the location service system further includes: a service entity, configured to receive the location server permission change indication message, where the location service permission change indication message is used to indicate the service entity to determine a location service permission after the target terminal is changed, and generate a key corresponding to the location service permission after the target terminal is changed; the service entity is further configured to send a location service permission change response message to a location server, where the location service permission change response message is used to instruct the location server to store the location service permission information after the target terminal is changed and a key corresponding to the location service permission after the target terminal is changed.

Optionally, the positioning server is further configured to: receiving a first positioning service permission change message carrying positioning service permission information changed by the target terminal from a user subscription information server, wherein the first positioning service permission change message is sent by the user subscription information server after changing the positioning service permission of the target terminal according to a positioning service permission change indication message from a core network element, the positioning service permission change indication message is sent by the core network element after receiving an attachment request message or a tracking area update request message from the target terminal, the attachment request message or the tracking area update request message carries positioning service permission change indication information, and the positioning service permission change indication information is used for indicating to change the positioning service permission of the target terminal.

Optionally, the core network element is further configured to: receiving a positioning service authority changing message from a positioning server, wherein the positioning service authority changing message carries positioning service authority information changed by a target terminal; informing the target terminal that the positioning service authority is changed; and receiving a first request message sent by the target terminal according to the notification of the core network element, and sending a first response message to the target terminal, wherein the first response message carries the positioning service permission information after the target terminal is changed.

Optionally, the core network element is further configured to: receiving a first request message from a target terminal; sending a positioning service permission change indication message to a user subscription information server, wherein the positioning service permission change indication message is used for requesting to acquire positioning service permission information changed by the target terminal; receiving a positioning service permission change confirmation message sent by the user subscription information server, wherein the positioning service permission change confirmation message carries the positioning service permission after the target terminal is changed and a key corresponding to the positioning service permission after the target terminal is changed, and the positioning service permission change confirmation message is used for indicating the core network element to store the positioning service permission after the target terminal is changed and the key corresponding to the positioning service permission after the target terminal is changed; and sending a first response message to the target terminal, wherein the first response message carries a key corresponding to the changed positioning service authority of the target terminal.

In a sixth aspect, there is provided a positioning server comprising: the system comprises a receiving module, a sending module and a receiving module, wherein the receiving module is used for receiving a first positioning service authority changing message which is used for requesting to change the positioning service authority of a target terminal; and the sending module is used for sending a second positioning service permission changing message to a core network element, wherein the second positioning service permission changing message carries the positioning service permission information after the target terminal is changed.

Optionally, the sending module is further configured to: sending a positioning service permission change indication message to a user subscription information server, wherein the positioning service permission change indication message is used for indicating the user subscription information server to determine the positioning service permission after the target terminal is changed; the receiving module is further configured to: and receiving a positioning service permission change confirmation message sent by the user subscription information server, wherein the positioning service permission change confirmation message carries the positioning service permission information after the target terminal is changed.

Optionally, the receiving module is further configured to: and determining the positioning service authority information after the target terminal is changed according to the first positioning service authority change message, and generating a key corresponding to the positioning service authority after the target terminal is changed.

Optionally, the receiving module is specifically configured to: receiving a first positioning service authority change message sent by the target terminal through an application layer; the sending module is specifically configured to: and sending a positioning service permission change message to the core network element, wherein the positioning service permission change message is used for indicating the core network element to store the positioning service permission information after the target terminal is changed and a key corresponding to the positioning service permission after the target terminal is changed.

Optionally, the receiving module is specifically configured to: receiving a first positioning service permission change message from the core network element, where the first positioning service permission change message is sent by the core network element after receiving an attach request message or a tracking area update request message of the target terminal, where the attach request message or the tracking area update request message carries positioning service permission change indication information, and the positioning service permission change indication information is used for indicating to change a positioning service permission of the target terminal; the sending module is specifically configured to: and sending a second positioning service permission change message to the core network element, wherein the second positioning service permission change message is used for indicating the core network element to store the positioning service permission information after the target terminal is changed and a key corresponding to the positioning service permission after the target terminal is changed.

Optionally, the receiving module is further configured to: and verifying the integrity of the first positioning service permission change message, if the verification is passed, determining the positioning service permission changed by the target terminal, and generating a key corresponding to the positioning service permission changed by the target terminal.

Optionally, the first positioning service permission change message is sent after the core network element determines that a new key needs to be generated for the target terminal; the receiving module is further configured to: generating a key corresponding to the changed positioning service authority of the target terminal for the target terminal according to the first positioning service authority change message, wherein the key is used for decrypting broadcasted network auxiliary data; the second location service permission change message sent by the location server to the core network element is used for indicating the core network element to store the location service permission after the target terminal is changed and a key corresponding to the location service permission after the target terminal is changed.

Optionally, the sending module is further configured to: sending a positioning service permission change indication message to a service entity, wherein the positioning service permission change indication message is used for indicating the service entity to determine the positioning service permission changed by the target terminal and generating a key corresponding to the positioning service permission changed by the target terminal; the receiving module is further configured to: and receiving a positioning service permission change response message sent by the service entity, wherein the positioning service permission change response message is used for indicating the positioning server to store the positioning service permission information after the target terminal is changed and a key corresponding to the positioning service permission after the target terminal is changed.

Optionally, the receiving module is specifically configured to: receiving a first positioning service permission change message carrying positioning service permission information changed by the target terminal from a user subscription information server, wherein the first positioning service permission change message is sent by the user subscription information server after changing the positioning service permission of the target terminal according to a positioning service permission change indication message from a core network element, the positioning service permission change indication message is sent by the core network element after receiving an attachment request message or a tracking area update request message from the target terminal, the attachment request message or the tracking area update request message carries positioning service permission change indication information, and the positioning service permission change indication information is used for indicating to change the positioning service permission of the target terminal.

Optionally, the sending module is further configured to: sending a first positioning service permission change message to the service entity, wherein the first positioning service permission change message carries positioning service permission information after the target terminal is changed, and the first positioning service permission change message is used for indicating the service entity to generate a key corresponding to the positioning service permission after the target terminal is changed; the receiving module is further configured to: and receiving a first positioning service permission change response message sent by the service entity, wherein the first positioning service permission change response message is used for indicating the positioning service permission to store a key corresponding to the positioning service permission changed by the target terminal.

Optionally, the receiving module is specifically configured to: receiving a first positioning service permission change message from a service entity, wherein the first positioning service permission change message is sent after the service entity receives a positioning service permission change indication message sent by a target terminal through an application layer and carries out positioning service permission change on the target terminal, and the first positioning service permission change message is used for indicating a positioning server to store the changed positioning of the target terminal to a service permission and generating a key corresponding to the changed positioning service permission of the target terminal; the sending module is specifically configured to: and sending a second positioning service permission change message to a user subscription information server, wherein the second positioning service permission change message carries the positioning service permission information after the target terminal is changed, and the second positioning service permission change message is used for indicating the user subscription information server to store the positioning service permission after the target terminal is changed.

Optionally, the receiving module is specifically configured to: and receiving a positioning service permission change confirmation message sent by the user subscription information server, wherein the positioning service permission change confirmation message is used for indicating that the user subscription information server stores the positioning service permission changed by the target terminal and a key corresponding to the positioning service permission changed by the target terminal.

A seventh aspect provides a core network element, including: the receiving module is used for receiving a positioning service authority changing message from a positioning server, wherein the positioning service authority changing message carries positioning service authority information changed by a target terminal; the notification module is used for notifying the target terminal that the positioning service authority is changed; and the sending module is used for sending a first response message to the target terminal according to the received first request message sent by the target terminal according to the notification of the core network element, wherein the first response message carries the positioning service permission information after the target terminal is changed.

Optionally, the notification module is specifically configured to: indicating a service base station of the target terminal to send a system broadcast message, wherein the system broadcast message carries an identifier of the target terminal and positioning service permission change indication information; or, instructing the serving base station of the target terminal to send a paging message, where the paging message carries an identifier of the target terminal and positioning service permission change instruction information; and the positioning service permission change indication information is used for indicating that the positioning service permission of the target terminal is changed.

In an eighth aspect, there is provided a core network element, including: a receiving module, configured to receive a location service permission change message from a location server, where the location service permission change message carries location service permission information after a target terminal is changed and a key corresponding to the location service permission after the target terminal is changed, and the location service permission change message is used to instruct a core network element to store the location service permission after the target terminal is changed and the key corresponding to the location service permission after the target terminal is changed; and the sending module is used for sending a positioning service authority configuration message to the target terminal, wherein the positioning service authority configuration message carries the positioning service authority information changed by the target terminal.

A ninth aspect provides a core network element, which includes a receiving module, configured to receive a first request message from a target terminal; a sending module, configured to send a location service permission change indication message to a user subscription information server, where the location service permission change indication message is used to request to obtain location service permission information after the target terminal is changed; the receiving module is further configured to receive a positioning service permission change confirmation message sent by the user subscription information server, where the positioning service permission change confirmation message carries the positioning service permission after the target terminal is changed and a key corresponding to the positioning service permission after the target terminal is changed, and the positioning service permission change confirmation message is used to instruct the core network element to store the positioning service permission after the target terminal is changed and the key corresponding to the positioning service permission after the target terminal is changed; the sending module is further configured to send a first response message to the target terminal, where the first response message carries a key corresponding to the location service right changed by the target terminal.

In a tenth aspect, there is provided a communication apparatus comprising: a processor, a memory, and a transceiver; the transceiver is used for receiving or transmitting information under the control of the processor; the processor is configured to read the computer instructions in the memory and execute the method according to the first aspect.

In an eleventh aspect, there is provided a communication apparatus comprising: a processor, a memory, and a transceiver; the transceiver is used for receiving or transmitting information under the control of the processor; the processor is configured to read the computer instructions in the memory and execute the method according to the second aspect.

In a twelfth aspect, a communication apparatus is provided, including: a processor, a memory, and a transceiver; the transceiver is used for receiving or transmitting information under the control of the processor; the processor is configured to read the computer instructions in the memory and execute the method according to the third aspect.

In a thirteenth aspect, a communication apparatus is provided, including: a processor, a memory, and a transceiver; the transceiver is used for receiving or transmitting information under the control of the processor; the processor is configured to read the computer instructions in the memory and execute the method according to the fourth aspect.

In a fourteenth aspect, there is provided a computer-readable storage medium having stored thereon computer-executable instructions for causing the computer to perform the method of the tenth aspect.

In a fifteenth aspect, there is provided a computer-readable storage medium having stored thereon computer-executable instructions for causing the computer to perform the method of the eleventh aspect.

In a sixteenth aspect, there is provided a computer-readable storage medium having stored thereon computer-executable instructions for causing the computer to perform the method of the twelfth aspect.

A seventeenth aspect provides a computer-readable storage medium having stored thereon computer-executable instructions for causing the computer to perform the method of the thirteenth aspect.

Drawings

Fig. 1 is a schematic diagram of a positioning system architecture suitable for use in the embodiments of the present application;

fig. 2 is a schematic diagram of a positioning system architecture in a 4G network according to an embodiment of the present disclosure;

fig. 3 is a schematic diagram of a positioning system architecture in a 5G network according to an embodiment of the present application;

fig. 4 to fig. 7 are schematic diagrams illustrating a process of changing the location service authority according to an embodiment of the present application;

fig. 8 to 12 are message interaction diagrams of a location service permission change procedure according to an embodiment of the present application;

fig. 13 is a schematic structural diagram of a location service system according to an embodiment of the present application;

fig. 14 is a schematic structural diagram of a positioning server according to an embodiment of the present application;

fig. 15 to 17 are schematic structural diagrams of a core network element according to an embodiment of the present application;

fig. 18 to 21 are schematic structural diagrams of a communication device according to an embodiment of the present application.

Detailed Description

Hereinafter, some terms in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.

(1) In the embodiments of the present application, the terms "network" and "system" are often used interchangeably, but those skilled in the art can understand the meaning.

(2) In the embodiments of the present application, the term "plurality" means two or more, and other terms are similar thereto.

(3) "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

(4) "first" is used to distinguish between similar objects and is not necessarily used to describe a particular order or sequence.

The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1, which is a schematic diagram of a positioning system architecture applicable to the embodiment of the present application, and exemplarily lists network elements in a part of a positioning system related to the embodiment of the present application, as shown in the figure, a terminal 101 may complete information interaction of a change of a location service right of the terminal 101 with a positioning server 105 or a service entity 106 through an application layer, or complete information interaction of a change of a location service right of the terminal 101 with the positioning server 105 or the service entity 106 through an attachment request message or a tracking area update request message carrying indication information of the change of the location service right. When receiving a request for acquiring a key sent after the location service permission of the terminal 101 is changed through the base station 102, the core network element 103 may directly acquire the location service permission after the terminal is changed from the user subscription information server 104; or, directly obtaining the location service right after the terminal change from the location server 105, or obtaining the location service right after the terminal change from the location server 105 through the user subscription information server 104; or, the location service right after the terminal change is acquired from the business entity 106 through the user subscription information server 104 and/or the location server 105. The location server 105 may generate a new key based on the changed location service rights. The key is used for the terminal to decrypt broadcasted network assistance data.

The service entity 106 stores the location service right of the terminal 101, which can control the location service right change of the terminal 101, and the service entity 106 sends the changed location service right to the core network element 103 through the location server 105 and/or the user subscription information server 104. In particular, the business entity 106 is an organization or entity outside the communication system, such as an associated authority such as the geographic information mapping bureau, and the application is not limited thereto.

The core network element 103 in fig. 1 may be a Mobility Management node (MME) in a 4G network positioning system, or an Access and Mobility Management Function (AMF) in a 5G network positioning system; the Subscriber information Server 104 may be a Home Subscriber Server (HSS) in a 4G network positioning system, or may be the same Data Management (UDM) in a 5G network positioning system; the Location server 105 may be an Evolved Serving Mobile Location Center (E-SMLC) in a 4G network Location system, or a Location Management Function (LMF) in a 5G network Location system.

The architecture of the 4G network positioning system and the architecture of the 5G network positioning system are listed below, respectively.

Fig. 2 is a schematic diagram of a positioning system architecture in a 4G network to which the embodiment of the present application is applicable, and the diagram exemplarily lists some network elements related to the embodiment of the present application. As shown in the figure, a base station (eNodeB)204 receives a request message sent by a terminal (UE)205 through LTE-Uu to acquire a key, where the request message may carry indication information of a location service permission change, and forwards the request message to an MME 202 to which the UE belongs; after receiving the key acquisition request message through S1, the MME 202 performs information interaction with the HSS 201 through S6a to acquire the location service right changed by the UE, and performs information interaction with the E-SMLC 203 through the SLs to acquire key information corresponding to the changed location service right.

It should be noted that, in the foregoing embodiment, english abbreviations such as LTE-Uu, S1, and SLs are used to support communication protocols for information transmission between devices, between devices and network elements, and between network elements and network elements in a 4G network, which is not limited in this embodiment of the present application.

Fig. 3 is a schematic diagram illustrating a positioning system architecture in a 5G network to which the embodiment of the present invention is applied. The figure exemplarily lists some network elements related to the embodiments of the present application. As shown in the figure, a Radio Access network (NG-RAN) node 304 receives a request message for acquiring a key sent by a terminal (UE)305, where the request message may carry indication information of location service permission change, and forwards the request message to an AMF 302 to which the UE belongs through N2; alternatively, the AMF 302 directly receives the request message for acquiring the key sent by the UE through N1. The AMF 302 performs information interaction with the UDM 301 through N8 to acquire the location service authority changed by the UE, and performs information interaction with the LMF 303 through NLs to acquire key information corresponding to the location service authority changed.

It should be noted that, in the foregoing embodiment, english abbreviations of N1, N2, NLs are referred to as communication ports in a 5G network for supporting information transmission between devices, between devices and network elements, and between network elements and network elements, which is not limited in this embodiment of the application.

It should be noted that, the interaction between the 5G network functions may adopt a service-based interaction mode, that is, the message interaction between the network functions is implemented in a service call mode, that is, a service-based interface mode may be supported in the location service information interaction.

Fig. 4 is a flowchart of a method for changing location service permissions according to an embodiment of the present application. As shown, the process includes:

s401: and the positioning server receives a first positioning service authority changing message, wherein the first positioning service authority changing message is used for requesting to change the positioning service authority of the target terminal.

The location server may be an E-SMLC in a 4G network location system, or an LMF in a 5G network system.

The positioning server receives a first positioning service permission change message sent by a target terminal through an application layer, wherein the first positioning service permission change message carries one or more of the following information: change instruction information used for indicating that the positioning service authority is changed; change reason indication information for indicating the reason for the change of the positioning service authority; the time limit information of the change is used for indicating temporary change or permanent change, and the time limit information of the change also comprises the valid period of the temporary change when indicating the temporary change; and the service type indicating information is used for indicating the target terminal to position the service permission change application to be a temporary application or a permanent application.

The location service right is a right of location service, and can indicate whether to allow obtaining a key, and the key is used for decrypting the broadcasted network auxiliary data. The keys that the location service rights allow to obtain may comprise one or more keys, more particularly keys corresponding to one or more tracking areas. For example, one authority is: the terminal is allowed to obtain key a in tracking area a for decrypting the broadcasted network assistance data. The key may be a key used within a particular area, such as a tracking area, referred to as a key corresponding to the tracking area. One or more keys may be associated with one tracking area, and the keys may be different for different tracking areas. Different keys may be used to decrypt different types of network assistance data. For example: the terminal has signed a certain location service, and the authority of the location service is to allow a key used in a certain area (tracking area) to be obtained in the area, so that the terminal can obtain the key used in the area, thereby the terminal can decrypt the broadcasted network auxiliary data and then use the network auxiliary data for location.

Optionally, after S401, the location server sends a location service right change instruction message to the user subscription information server, where the location service right change instruction message is used to instruct the user subscription information server to determine a location service right after the target terminal is changed; and the positioning server receives a positioning service permission change confirmation message sent by the user subscription information server, wherein the positioning service permission change confirmation message carries the positioning service permission information after the target terminal is changed. The user subscription information server may be an HSS in a 4G network positioning system, or may be a UDM in a 5G network system.

S402: and the positioning server sends a second positioning service permission change message to the core network element, wherein the second positioning service permission change message carries the positioning service permission information after the target terminal is changed.

The core network element may be an MME in a 4G network positioning system, or an AMF in a 5G network system; the positioning service authority information after the target terminal is changed comprises: one or more keys corresponding to the changed location service authority of the target terminal, wherein the one or more keys are used for encrypting network auxiliary data broadcasted to the target terminal; the location service authority information after the target terminal is changed further includes: validity period, tracking area indication information used and key type indication information.

Optionally, the location server sends a second location service permission change message to the core network element, where the second location service permission change message is used to instruct the core network element to store the location service permission information after the target terminal is changed and the key corresponding to the location service permission after the target terminal is changed.

In the above embodiment of the present application, the location server receives the first location service permission change message, and sends the second location service permission change message to the core network element; the first positioning service authority changing message determines the positioning service authority after the target terminal is changed, and the second positioning service authority changing message carries the positioning service authority information after the target terminal is changed; by the method, the target terminal obtains the corresponding key according to the changed positioning service authority information.

Optionally, the change of the location service right of the terminal is controlled by the location server, in this case, after S401, the location server may directly determine the location service right information after the terminal change according to the received first location service right change message, and generate a key corresponding to the location service right after the target terminal change.

Based on the flow shown in fig. 4, in some embodiments, the target terminal carries the location service permission change indication information through the attach request message or the TAU request message, in this case, the location server receives the first location service permission change message from the core network element, where the first location service permission change message is sent after the core network element receives the attach request message or the tracking area update request message of the target terminal, the attach request message or the tracking area update request message carries the location service permission change indication information, and the location service permission change indication information is used to indicate to change the location service permission of the target terminal; and the positioning server sends a second positioning service permission change message to the core network element, wherein the second positioning service permission change message is used for indicating the core network element to store the positioning service permission information after the target terminal is changed and the key corresponding to the positioning service permission after the target terminal is changed.

The second location service authority change message carries change time limit information used for indicating that the location service authority is changed into temporary change or permanent change and the validity period under the condition of temporary change.

Optionally, the location server may verify integrity of the first location service permission change message, and if the verification is passed and the user is allowed to perform location service permission change, determine the location service permission after the target terminal is changed, and generate a key corresponding to the location service permission after the target terminal is changed.

Optionally, if the first positioning service permission change message is sent after the core network element determines that a new key needs to be generated for the target terminal, the step of the positioning server receiving the first positioning service permission change message further includes: the positioning server generates a key corresponding to the positioning service authority changed by the target terminal for the target terminal according to the first positioning service authority changing message, wherein the key is used for encrypting network auxiliary data broadcasted to the target terminal; and the second positioning service permission change message sent by the positioning server to the core network element is used for indicating the core network element to store the positioning service permission information after the target terminal is changed and the key corresponding to the positioning service permission after the target terminal is changed.

Optionally, the changing of the location service right of the target terminal is controlled by the service entity, in this case, after the location server receives the first location service right changing message, the method further includes: the positioning server sends a positioning service permission change indication message to the service entity, wherein the positioning service permission change indication message is used for indicating the service entity to determine the positioning service permission after the target terminal is changed and generating a key corresponding to the positioning service permission after the target terminal is changed; and the positioning server receives a positioning service permission change response message sent by the service entity, wherein the positioning service permission change response is used for indicating the positioning server to store the positioning service permission information after the target terminal is changed and a key corresponding to the positioning service permission after the target terminal is changed.

Based on the process shown in fig. 4, in some embodiments, the changing of the location service right of the target terminal is controlled by the user subscription information server, in which case, the receiving, by the location server, of the first location service right changing message includes: the method comprises the steps that a positioning server receives a first positioning service permission change message which is sent by the user subscription information server according to a positioning service permission change indication message from a core network element and carries positioning service permission information after a target terminal is changed, the first positioning service permission change message is sent by the user subscription information server after the positioning service permission of the target terminal is changed, the positioning service permission change indication message is sent by the core network element after an attachment request message or a tracking area update request message from the target terminal is received by the core network element, the attachment request message or the tracking area update request message carries the positioning service permission change indication message, and the positioning service permission change indication message is used for indicating the positioning service permission of the changed target terminal.

Optionally, in the above embodiment, the changing of the location service right of the target terminal is controlled by the service entity, in this case, after the location server receives the first location service right changing message, the method further includes: the positioning server sends a first positioning service authority changing message to the service entity, wherein the first positioning service authority changing message carries positioning service authority information changed by the target terminal, and the first positioning service authority changing message is used for indicating the service entity to generate a key corresponding to the positioning service authority changed by the target terminal; and the positioning server receives a first positioning service permission change response message sent by the service entity, wherein the first positioning service permission change response message is used for indicating the positioning server to store a key corresponding to the positioning service permission changed by the target terminal.

Based on the process shown in fig. 4, in some embodiments, the change of the location service right of the target terminal is controlled by the service entity, and the target terminal sends a first location service right change message to the location server through the application layer, in which case, the location server receives the first location service right change message from the service entity, the first location service right change message is sent after the service entity receives a location service right change indication message sent by the target terminal through the application layer and performs location service right change on the target terminal, and the first location service right change message is used for instructing the location server to store the location service right after the target terminal is changed and generate a key corresponding to the location service right after the target terminal is changed; the positioning server sends a second positioning service permission change message to the core network element, wherein the second positioning service permission change message is sent to the user signing information server by the positioning server, carries the positioning service permission information after the target terminal is changed, and is used for indicating the user signing information server to store the positioning service permission after the target terminal is changed; and after the positioning server sends a second positioning service permission change message to the core network element, the positioning server also receives a positioning service permission change confirmation message sent by the user subscription information server, wherein the positioning service permission change confirmation message is used for indicating that the user subscription information server stores the positioning service permission after the target terminal is changed and a key corresponding to the positioning service permission after the target terminal is changed.

The positioning service right changing process shown in fig. 4 is a flow chart of a positioning service right changing method provided in an embodiment of the present application, and the positioning service right changing process takes a positioning server as an execution subject, and based on the same technical concept, positions the execution subject of service right changing with a core network element as a target terminal, as shown in fig. 5.

As shown, the process includes:

s501: and the core network element receives a positioning service authority changing message from the positioning server, wherein the positioning service authority changing message carries the positioning service authority information after the target terminal is changed.

If the core network element is an MME in a 4G network positioning system, the positioning server is an E-SMLC; or, if the network element of the core network is the AMF in the 5G network positioning system, the positioning server is the LMF.

The location service authority information after the target terminal is changed comprises: and one or more keys corresponding to the changed positioning service authority of the target terminal, wherein the one or more keys are used for encrypting the network auxiliary data broadcasted to the target terminal.

S502: and the network element of the core network informs the target terminal that the positioning service authority is changed.

In S502, a core network element indicates a serving base station of a target terminal to send a system broadcast message, where the system broadcast message carries an identifier of the target terminal and positioning service permission change indication information; or, the core network element indicates the serving base station of the target terminal to send a paging message, wherein the paging message carries the identifier of the target terminal and the positioning service permission change indication information; and the positioning service permission change indication information is used for indicating that the positioning service permission of the target terminal is changed.

S503: and the core network element receives a first request message sent by the target terminal according to the notification of the core network element, and sends a first response message to the target terminal, wherein the first response message carries the positioning service permission information after the target terminal is changed.

If the first request message is an attachment request message, the first response message is an attachment acceptance message; or, if the first request message is a TAU request message, the first response message is a TAU accept message.

Based on the same technical concept, an execution subject of server permission change is located by using a core network element as a target terminal, as shown in fig. 6, which is a flowchart of a location service permission change method provided in an embodiment of the present application.

As shown, the process includes:

s601: a core network element receives a positioning service authority change message from a positioning server, wherein the positioning service authority change message carries positioning service authority information changed by a target terminal and a key corresponding to the positioning service authority changed by the target terminal; the location service authority change message is used for indicating a core network element to store the location service authority after the target terminal is changed and a key corresponding to the location service authority after the target terminal is changed.

The core network element is an AMF in a 5G network positioning system, and the positioning server is an LMF in the 5G network positioning system.

S602: and the core network element sends a positioning service authority configuration message to the target terminal, wherein the positioning service authority configuration message carries the positioning service authority information changed by the target terminal.

Wherein, the location service authority information after the target terminal is changed comprises: one or more keys corresponding to the changed location service rights of the target terminal, the one or more keys being used for encrypting the network assistance data broadcasted to the target terminal.

In the embodiment of the present application, a network side needs to change the location service authority of a target terminal for some reason, and a core network element may configure, to the target terminal, location service authority information, which is carried in a location service authority change message received from a location server and is changed by the target terminal, so that the target terminal may obtain a key according to the changed location service authority.

Based on the same technical concept, the core network element is taken as an execution main body of the positioning service permission change of the target terminal, and the business entity controls the change of the positioning service permission of the target terminal and stores the positioning service permission of the target terminal after the change. Fig. 7 is a flowchart of a method for changing location service permissions according to an embodiment of the present application.

As shown, the process includes:

s701: the core network element receives a first request message from the target terminal.

S702: and the core network element sends a positioning service permission change indication message to the user subscription information server, wherein the positioning service permission change indication message is used for requesting to acquire the positioning service permission information changed by the target terminal.

Wherein, the location service authority information after the target terminal is changed comprises: one or more keys corresponding to the changed location service rights of the target terminal, the one or more keys being used for decrypting broadcasted network assistance data.

S703: and the core network element receives a positioning service permission change confirmation message sent by the user subscription information server, wherein the positioning service permission change confirmation message carries the positioning service permission change information after the target terminal is changed and a key corresponding to the positioning service permission after the target terminal is changed.

The positioning service permission change confirmation message is sent by the user subscription information server after the positioning service permission information changed by the target terminal is obtained from a service entity according to the received positioning service permission change indication message; the positioning service permission change confirmation message is used for indicating the core network element to store the positioning service permission after the target terminal is changed and the key corresponding to the positioning service permission after the target terminal is changed.

S704: and the core network element sends a first response message to the target terminal, wherein the first response message carries the key corresponding to the positioning service authority changed by the target terminal.

In the above embodiment, if the core network element is an MME in a 4G network positioning system, the positioning server is an E-SMLC, and the user subscription information server is an HSS; or, if the network element of the core network is the AMF in the 5G network positioning system, the positioning server is the LMF, and the user subscription information server is the UDM.

The following specifically describes a flow of the method for changing the location service authority provided in the embodiment of the present application in a message interaction manner by taking a location service system of a 5G network as an example.

Fig. 8 is a schematic message interaction diagram of a location service permission change process according to an embodiment of the present application. In this embodiment, the location service authority information may or may not be pre-configured in the UDM, but the location service authority information sent from the LMF includes the changed location service authority information and is stored in the UDM.

As shown, the process includes:

s801: and the UE and the LMF complete the interaction of the positioning service permission change.

Specifically, the UE sends a location service permission change message to the LMF through the application layer if the location service permission needs to be changed due to a certain service requirement. The location service authority change may be permanent or temporary, and if the location service authority change is temporary subscription authority change, the location service authority change message further includes a validity period. And the LMF receives the subscription authority change message sent by the UE and interacts with the UE according to the message.

S802: and after completing the positioning service permission change interaction with the UE, the LMF sends a positioning service permission change indication message to the UDM.

S803: and after receiving the positioning service authority change indication information sent by the LMF, the UDM confirms the reason and the type of the subscription authority change according to the indication information and stores the positioning service authority changed by the UE.

S804: and the UDM sends a UE positioning service authority change confirmation message to the LMF.

S805: and after receiving the UE positioning service authority change confirmation message sent by the UDM, the LMF determines a key corresponding to the UE changed positioning service authority according to the UE changed positioning service authority.

Optionally, for some UEs, the LMF may generate a new key after the location service authority is changed; or a UE that has not previously acquired the decryption key may change the authority to acquire the decryption key due to the location service authority.

S806: the LMF sends a message to the AMF.

Optionally, if the key corresponding to the location service authority after the UE change changes, the LMF sends a key data message carrying one or more changed encryption keys to the AMF. Where the key is used to decrypt the broadcasted network assistance data, it may include, for each changed or new key, a validity period, a set of applicable tracking areas, and a type of encryption key. Optionally, if the key corresponding to the location service authority after the UE change is not changed, the LMF sends, to the AMF, an indication message for describing that the key corresponding to the location service authority after the UE change is not changed.

S807: the AMF stores the changed or new key, which may include a validity period, a set of applicable tracking areas, and a type of key, based on a received key data message carrying one or more changed encryption keys.

S808: the UE sends an attach request message or TAU request message to the NG-RAN. The attach request message or TAU request message may be sent as part of normal mobility management. TAU request messages may also be sent specifically to request and obtain keys. The attach request message or TAU request message carries indication information for requesting a key.

S809: the NG-RAN receives the attach request message or TAU request message and forwards it to the AMF. Wherein the AMF is a serving AMF of the UE.

S810: the AMF receives the attach request message or TAU request message and returns an attach accept message or TAU accept message to the NG-RAN. The AMF carries indication information of a key corresponding to the location service right after the UE is changed in the attach accept message or the TAU accept message, where the indication information of the key includes one or more changed or new keys applicable to the current tracking area of the UE, and a validity period, a tracking area set, and a key type related to the key.

S811: the NG-RAN forwards the received attach accept message or TAU accept message to the UE.

After S811, the UE may start decrypting the broadcasted network assistance data using the obtained key once the validity period of the key has started and the UE is currently in the applicable tracking area after receiving the attach accept message or TAU accept message from the NG-RAN. The UE stops using the key when entering a tracking area that is not suitable for the key. When the validity period of the key has expired, the UE stops using and deletes the key.

S812: when the validity period expires, the AMF will delete all information of the key.

Optionally, the location service permission of the UE does not need to be configured in the UDM in advance, and the location service permission information sent from the LMF includes the changed location service permission information and the key corresponding to the location service permission, and is stored in the AMF. Based on the schematic diagram of the location service authority change flow shown in fig. 8, after executing S801, the LMF is executed to transmit the changed location service authority and the possibly changed key or new key to the AMF without executing S802 to S805, and the AMF stores the received changed location service authority and the possibly changed key or new key. The remaining steps are the same as the flow shown in fig. 8.

In the above embodiment, in order to quickly obtain the corresponding key after the location service permission of the UE is changed, a UE configuration update (configuration update) process may be triggered by the AMF, where the AMF carries information about the change of the location service permission in the UE configuration update process, and the UE may initiate an attach request message or a TAU request message in time after receiving the information to obtain the corresponding key after the change of the location service permission.

In order to quickly acquire a corresponding key after the positioning service authority of the UE is changed, an MME or an eNodeB can send the key to the UE through a broadcast message or a paging message, wherein the broadcast message or the paging message carries identification information of the UE key change in the positioning service and an address of the UE with the changed positioning service authority, corresponding to the positioning service system of the 4G network. In order to secure the identification information of the key change, the integrity of the Message indicating the user authority change given to the terminal by the network may be guaranteed by a Message Authentication Code (MAC). The calculation of the MAC may use the key obtained during the attach request or TAU request of the UE to complete the authentication. For example, assume that the MAC value is set to X bytes. The specific verification method comprises the following steps:

1. the key for integrity protection is calculated for the part of the message other than the MAC. The integrity protected key may be derived by an initial attach authentication derived key derivation. And calculating the MAC value through integrity protection, and sending the MAC value to the UE in the last X bytes of the system message or the paging message.

2. And after receiving the system message, the UE uses a key with integrity protection consistent with the network side to recalculate the part except the last X bytes in the message for integrity calculation, the used key and the function are the same as those used by the network side, and if the calculated MAC value is the same as the received MAC value, the integrity verification is passed. Otherwise, the integrity verification of the notification message is not passed, and the UE discards the received indication message.

The structure of the system message and the paging message can be predefined:

1. identifying a system message or a paging message for positioning a service permission change indication through a special field;

2. the message needs to contain the identification of the user who updates the authority;

3. the message may optionally also contain the security algorithm and key identification used for the MAC calculation described above.

It should be noted that, in the above embodiment, the location service system of the 5G network is taken as an example in executing S801 to S812, and network elements in the location service system of the 4G network are changed, so that key distribution of the location service system based on the 4G network can be implemented by changing LMF to E-SMLC, UDM to HSS, AMF to MME, and NG-RAN to eNodeB in the location service system of the 5G network, which is not described herein again.

In a location service system of a 5G network, if a network side needs to change a location service authority of a UE for some reason, the change of the location service authority of the UE can be completed through a UE configuration update procedure. Fig. 9 is a schematic message interaction diagram of a location service permission change process according to an embodiment of the present application.

As shown, the process includes:

s901: and the LMF sends a UE location service permission change request message to the AMF.

Specifically, the network side needs to change the location service authority of the UE for some reason, the LMF determines the location service authority after the UE change and a key corresponding to the location service authority according to the reason, and carries information such as the location service authority after the UE change, the change reason, and the key corresponding to the location service authority after the UE change in the location service authority change request message and sends the location service authority change request message to the AMF.

S902: the AMF stores the positioning service authority after the UE is changed and a key corresponding to the positioning service authority after the UE is changed according to the received UE positioning service authority change request message; the key may include, among other things, a validity period, a set of applicable tracking areas, and a type of key.

S903: and the AMF returns a UE positioning service permission change response message to the LMF.

S904: and the AMF sends a configuration updating request message to the UE, wherein the message carries the reason for changing the UE positioning service authority, the changed positioning service authority and a key corresponding to the changed positioning service authority.

After S904, once the validity period of the key has started and the UE is currently in the applicable tracking area, the UE may start decrypting the broadcasted network assistance data using the obtained key. The UE stops using the key when entering a tracking area that is not suitable for the key. When the validity period of the key has expired, the UE stops using and deletes the key.

S905: the UE returns a configuration update response message to the AMF.

S906: when the validity period expires, the AMF will delete all information of the key.

In one case, taking the location service system of the 5G network as an example, the UE does not send the location service permission change message to the LMF through the application layer any more, but carries the location service permission change message of the UE in the attach request message or the TAU message. Fig. 10 is a schematic message interaction diagram of a location service permission change process according to an embodiment of the present application. In this embodiment, the LMF stores the location service authority of the UE and the key corresponding to the location service authority, the LMF may send the key corresponding to the location service authority of the UE to the AMF in advance, and the AMF stores the key after receiving the key.

As shown, the process includes:

s1001: UE sends attach request message or TAU request message to NG-RAN; wherein, the attach request message or the TAU request message carries an indication message of UE location service permission change, and the indication message includes a location service permission, a change reason and a service type for which the UE applies for change.

S1002: the NG-RAN forwards the received attach request message or TAU request message to the AMF to which the UE belongs.

S1003: after receiving an attachment request message or an indication message of UE positioning service permission change in a TAU request message sent by an NG-RAN, an AMF sends a positioning service permission change request message to an LMF for requesting to change the positioning service permission of the UE; wherein, the request message carries the indication message of UE positioning service authority change.

S1004: and the LMF verifies the indication message of the positioning service permission change of the UE according to the received positioning server positioning service permission change request message, if the verification is successful, the positioning service permission of the UE is changed, and a changed key is determined or a new key is generated according to the positioning service permission changed by the UE.

S1005: and the LMF sends a positioning service permission change confirmation message to the AMF.

In S1005, if the UE changed location service authority generates a new key, the message directly carries indication information of the new key; if the location service authority changed by the UE does not generate a new key, the message carries indication information of the changed key; the indication information of the key includes one or more changed or new keys applicable to the current tracking area of the UE, and a validity period, a tracking area set, and a key type associated with the key.

S1006: and the AMF stores the key corresponding to the location service authority after the UE is changed according to the received location service authority confirmation message.

S1007 to S1009 are the same as the steps performed in S810 to S812, and are not described again here.

Based on the message interaction diagram of the location service right change flow shown in fig. 10, in one case, the location service right of the UE is stored in the UDM, and the AMF needs to obtain the key after the location service right change from the UDM to the LMF. That is, after performing S1002, the AMF sends a location service authority change request message to the UDM; the UDM verifies the indication message of the positioning service permission change of the UE according to the received positioning service permission change request message, if the verification is successful, the positioning service permission changed by the UE is confirmed, and a message is sent to the LMF, wherein the message is used for acquiring a key corresponding to the changed positioning service permission and carries the change reason, the service type and the identity identification information of the UE; the LMF returns a confirmation message to the UDM according to the received message; the UDM returns a positioning service permission change confirmation message to the AMF according to the received confirmation message; and the LAM confirms a corresponding key after the positioning service authority is changed according to the message received from the UDM, and sends indication information of the key corresponding to the changed positioning service authority to the AMF, wherein the indication information of the key comprises one or more changed or new keys applicable to the current tracking area of the UE, and a validity period, a tracking area set and a key type related to the key. The remaining steps are the same as those shown in fig. 10.

Based on the message interaction diagram of the location service permission change process shown in fig. 10, in one case, the location service permission of the UE and the key corresponding to the location service permission are stored in the LMF, the LMF may send the location service permission of the UE and the key corresponding to the location service permission to the AMF in advance, and the AMF verifies the indication message of the location service permission change of the UE. In this case, after performing S1002, the AMF verifies the indication message of the UE for location service authority change, and if the corresponding key is changed or not changed after the UE location service authority change, the AMF may directly transmit the changed key or the unchanged key to the UE, and perform steps S1007 to S1009; and if the UE needs to generate a new key after the positioning service authority is changed, the AMF sends an indication message of the positioning service authority change to the LMF. The LMF generates a new key according to the received indication message of the change of the location service authority, and transmits the generated new key to the AMF, and the rest steps are the same as the steps shown in fig. 10.

It should be noted that, in the above embodiment, the positioning service system of the 5G network is taken as an example in executing S1001 to S1009, and network elements in the positioning service system of the 4G network are changed, so that key distribution of the positioning service system based on the 4G network can be implemented by changing LMF to E-SMLC, UDM to HSS, AMF to MME, and NG-RAN to eNodeB in the positioning service system of the 5G network, which is not described herein again.

In one case, taking the location service system of the 5G network as an example, the service entity is responsible for storing and controlling the change of the location service authority of the UE. Fig. 11 is a schematic message interaction diagram of a location service permission change process according to an embodiment of the present application. In this embodiment, the UE location service right is stored and controlled by the service entity, the LMF may send the key corresponding to the UE location service right to the AMF in advance, and the service entity actively sends the determined indication information of location service right change to the UDM.

As shown, the process includes:

s1101: and the UE and the service entity complete the positioning service permission change interaction.

Specifically, the UE sends a location service permission change message to the service entity through the application layer if the location service permission needs to be changed due to a certain service requirement. The location service authority change may be permanent or temporary, and if the location service authority change is temporary subscription authority change, the location service authority change message further includes a validity period. And the service entity receives the subscription authority change message sent by the UE and interacts with the UE according to the message.

S1102: and after finishing the location service permission change interaction with the UE, the service entity sends a location service permission change indication message to the LMF, wherein the location service permission change indication message comprises the changed location service permission, a change reason, a service type and the like.

S1103: and the LMF verifies according to the received positioning service permission change indication message, if the verification is passed, the positioning service permission changed by the UE is stored, and a corresponding key is determined or a new key is generated according to the positioning service permission changed by the UE.

S1104: and the LMF locates the service authority change indication message to the UDM.

In S1104, if the key corresponding to the changed location service authority is changed or not changed, directly forwarding the location service authority change indication message received by the LMF to the UDM; and if the changed positioning service authority generates a new key, adding indication information of the new key in the positioning service authority change indication message and then sending the indication information to the UDM.

S1105: and the UDM stores the positioning service authority changed by the UE and a corresponding key thereof according to the received positioning service authority change indication message.

S1106: and the UDM returns a positioning service authority confirmation indication message to the LMF.

S1107: and the LMF returns a positioning service authority confirmation indication message to the service entity for sending.

The steps performed in S1108-S1109 are the same as those performed in S808-S809, and are not described herein again.

S1110: and the AMF sends a request message to the UDM according to the received attachment request message or the TAU request message, and is used for acquiring a key corresponding to the positioning service authority changed by the UE.

S1111: and the UDM returns a confirmation message to the AMF according to the received request message, wherein the confirmation message comprises indication information of a key corresponding to the location service authority changed by the UE or a new key generated after the location service authority of the UE is changed.

S1112: and the AMF stores the corresponding key after the UE positioning service authority is changed according to the received confirmation message.

The steps performed in S1113 to S1115 are the same as those performed in S810 to S812, and are not described herein again.

Based on the message interaction diagram of the location service permission change process shown in fig. 11, in one case, the UE location service permission is stored and controlled by the service entity, the LMF may send the key corresponding to the UE location service permission to the AMF in advance, and the UE confirms the indication information of the location service permission change to the service entity through the attach request message or the TAU request message. In this case, S1108 to S1109 are executed directly after S1101 is executed, and the AMF sends a location service change request message to the UDM according to the received attach request message or TAU request message; the UDM forwards the received positioning service change request message to a service entity; the service entity confirms the positioning service authority after the UE is changed according to the received positioning service change request message and returns a positioning service authority change confirmation message to the UDM, wherein the message comprises the positioning service authority after the UE is changed; the UDM forwards the received location service rights change confirmation message to the AMF. The remaining steps are the same as those shown in fig. 11.

It should be noted that, in the above embodiments, the positioning service system of the 5G network is taken as an example in executing S1101 to S1115, and network elements in the positioning service system of the 4G network are changed, so that key distribution of the positioning service system based on the 4G network can be implemented by changing LMF to E-SMLC, UDM to HSS, AMF to MME, and NG-RAN to eNodeB in the positioning service system of the 5G network, which is not described herein again.

In one case, taking the location service system of the 5G network as an example, the service entity is responsible for storing and controlling the change of the location service authority of the UE, and the UE does not send a location service authority change message to the service entity through the application layer any longer, but carries the location service authority change message of the UE in the attach request message or the TAU message. Fig. 12 is a schematic message interaction diagram of a location service change procedure according to an embodiment of the present application. In this embodiment, the UE location service right is stored and controlled by the service entity, and the LMF may send the key corresponding to the UE location service right to the AMF in advance.

As shown, the process includes:

s1201 to S1203 are the same as the steps described in S1001 to S1003, and are not described again here.

S1204: and the LMA forwards the received location service authority change request message to the service entity.

S1205: and the service entity receives the positioning service permission change request message and returns a positioning service permission change confirmation message to the LAM, wherein the positioning service permission change confirmation message comprises the positioning service permission changed by the UE.

S1206: and the LAM verifies the received positioning service permission change confirmation message, if the verification is passed, the positioning service permission changed by the UE is stored, and a corresponding key is determined or a new key is generated according to the positioning service permission changed by the UE.

S1207: and the LAM sends a positioning service permission change confirmation message to the AMF.

In S1207, if the key corresponding to the changed location service permission is changed or not changed, the location service permission change message received by the LAM is directly forwarded to the AMF; and if the changed location service authority generates a new key, adding indication information of the new key in the location service authority change message and then sending the indication information to the AMF.

The steps S1208 to S1211 are the same as those performed in S1006 to S1009, and are not described again here.

Based on the message interaction diagram of the location service permission change flow shown in fig. 12, in one case, the location service permission change of the UE is controlled by the service entity, and the location service permission of the UE is stored in the UDM. In this case, after executing S1201 to S1202, the AMF sends the location service permission change request message to the UDM, and the UDM sends the received location service permission change request message to the LMF, and the LMF forwards the location service permission change request message to the service entity; and the service entity returns a positioning service permission change confirmation message to the LMF after receiving the positioning service permission change request message, the LMF sends the received positioning service permission change confirmation message to the UDM, the UDM forwards the positioning service permission change confirmation message to the AMF, and the updated positioning service permission is stored in the UDM. The remaining steps are the same as those shown in fig. 12 and are not described herein again.

It should be noted that, in the above embodiments, the positioning service system of the 5G network is taken as an example in executing S1201 to S1211, and network elements in the positioning service system of the 4G network are changed, so that key distribution of the positioning service system based on the 4G network can be implemented by changing the LMF to the E-SMLC, the UDM to the HSS, the AMF to the MME, and the NG-RAN to the eNodeB in the positioning service system of the 5G network, which is not described herein again.

Based on the same technical concept, the embodiment of the present application further provides a location service system, which can implement the processes shown in fig. 4 to 7.

Referring to fig. 13, a schematic structural diagram of a location service system provided in the embodiment of the present application is shown, where the system may include: the location server 1301, the core network element 1302, and further a user subscription information server 1303.

The location server 1301 is configured to receive a first location service permission change message, where the first location service permission change message is used to request a location service permission of a target terminal to be changed.

The core network element 1302 is configured to receive a second location service permission change message sent by the location server, where the second location service permission change message carries location service permission information after the target terminal is changed.

The positioning server 1301 is further configured to send a second positioning service permission change message to the core network element.

Optionally, the location service system further includes: a user subscription information server 1303, configured to receive a location service right change indication message sent by the location server, where the location service right change indication message is used to indicate the user subscription information server to determine a location service right after the target terminal is changed; the user subscription information server 1303 is further configured to send a location service permission change confirmation message to the location server, where the location service permission change confirmation message carries the location service permission information after the target terminal is changed.

Optionally, the location service system further includes: a service entity 1304, configured to receive the location server permission change indication message, where the location service permission change indication message is used to indicate the service entity to determine the location service permission after the target terminal is changed, and generate a key corresponding to the location service permission after the target terminal is changed; the service entity 1304 is further configured to send a location service permission change response message to a location server, where the location service permission change response message is used to instruct the location server to store the location service permission information after the target terminal is changed and a key corresponding to the location service permission after the target terminal is changed.

Optionally, the location server is further configured to receive a first location service right change message carrying location service right information after the target terminal is changed from a user subscription information server, the first location service authority change message is sent by the subscriber subscription information server after changing the location service authority of the target terminal according to the location service authority change indication message from the core network element, the positioning service permission change indication message is sent by the core network element after receiving an attach request message or a tracking area update request message from the target terminal, the attach request message or the tracking area update request message carries positioning service permission change indication information, and the positioning service permission change indication information is used for indicating the positioning service permission of the target terminal to be changed.

Optionally, the core network element is further configured to receive a location service permission change message from a location server, where the location service permission change message carries location service permission information after the target terminal is changed; informing the target terminal that the positioning service authority is changed; and receiving a first request message sent by the target terminal according to the notification of the core network element, and sending a first response message to the target terminal, wherein the first response message carries the positioning service permission information after the target terminal is changed.

Optionally, the core network element is further configured to receive a first request message from a target terminal; sending a positioning service permission change indication message to a user subscription information server, wherein the positioning service permission change indication message is used for requesting to acquire positioning service permission information changed by the target terminal; receiving a positioning service permission change confirmation message sent by the user subscription information server, wherein the positioning service permission change confirmation message carries the positioning service permission after the target terminal is changed and a key corresponding to the positioning service permission after the target terminal is changed, and the positioning service permission change confirmation message is used for indicating the core network element to store the positioning service permission after the target terminal is changed and the key corresponding to the positioning service permission after the target terminal is changed; and sending a first response message to the target terminal, wherein the first response message carries a key corresponding to the changed positioning service authority of the target terminal.

Based on the same technical concept, the embodiment of the present application further provides a positioning server, and the positioning server may implement the flow shown in fig. 4.

Referring to fig. 14, a schematic structural diagram of a positioning server provided in the embodiment of the present application is shown, where the positioning server may include: a receiving module 1401 and a sending module 1402.

A receiving module 1401, configured to receive a first positioning service permission change message, where the first positioning service permission change message is used to request a change of a positioning service permission of a target terminal;

a sending module 1402, configured to send a second location service permission change message to a core network element, where the second location service permission change message carries location service permission information after the target terminal is changed.

Optionally, the receiving module is further configured to determine, according to the first positioning service permission change message, the positioning service permission information after the target terminal is changed, and generate a key corresponding to the positioning service permission after the target terminal is changed.

Optionally, the receiving module is specifically configured to receive a first positioning service permission change message sent by the target terminal through an application layer; the sending module is specifically configured to send a location service permission change message to the core network element, where the location service permission change message is used to instruct the core network element to store the location service permission information after the target terminal is changed and a key corresponding to the location service permission after the target terminal is changed.

Optionally, the receiving module is specifically configured to receive a first positioning service permission change message from the core network element, where the first positioning service permission change message is sent by the core network element after receiving an attach request message or a tracking area update request message of the target terminal, the attach request message or the tracking area update request message carries positioning service permission change indication information, and the positioning service permission change indication information is used to indicate that a positioning service permission of the target terminal is changed; the sending module is specifically configured to send a second location service permission change message to the core network element, where the second location service permission change message is used to instruct the core network element to store the location service permission information after the target terminal is changed and a key corresponding to the location service permission after the target terminal is changed.

Optionally, the receiving module is further configured to verify integrity of the first location service permission change message, determine, if the verification is passed, the location service permission changed by the target terminal, and generate a key corresponding to the location service permission changed by the target terminal.

Optionally, the first positioning service permission change message is sent after the core network element determines that a new key needs to be generated for the target terminal; the receiving module is further configured to generate, according to the first positioning service permission change message, a key corresponding to the positioning service permission changed by the target terminal for the target terminal, where the key is used to decrypt broadcasted network auxiliary data; the second location service permission change message sent by the location server to a core network element is used for indicating the core network element to store the location service permission after the target terminal is changed and a key corresponding to the location service permission after the target terminal is changed.

Optionally, the sending module is further configured to send a location service permission change indication message to a service entity, where the location service permission change indication message is used to indicate the service entity to determine the location service permission after the target terminal is changed, and generate a key corresponding to the location service permission after the target terminal is changed; the receiving module is further configured to receive a location service permission change response message sent by the service entity, where the location service permission change response message is used to instruct the location server to store the location service permission information after the target terminal is changed and a key corresponding to the location service permission after the target terminal is changed.

Optionally, the receiving module is specifically configured to receive a first location service right change message carrying location service right information after the target terminal is changed from a user subscription information server, the first location service authority change message is sent by the subscriber subscription information server after changing the location service authority of the target terminal according to the location service authority change indication message from the core network element, the positioning service permission change indication message is sent by the core network element after receiving an attach request message or a tracking area update request message from the target terminal, the attach request message or the tracking area update request message carries positioning service permission change indication information, and the positioning service permission change indication information is used for indicating the positioning service permission of the target terminal to be changed.

Optionally, the sending module is further configured to send a first positioning service permission change indication message to a service entity, where the first positioning service permission change indication message carries information of a positioning service permission changed by the target terminal, and the first positioning service permission change message is used to indicate the service entity to generate a key corresponding to the positioning service permission changed by the target terminal; the receiving module is further configured to receive a first positioning service permission change response message sent by the service entity, where the first positioning service permission change response message is used to instruct the positioning service permission to store a key corresponding to the positioning service permission changed by the target terminal.

Optionally, the receiving module is specifically configured to receive a first positioning service permission change message from a service entity, where the first positioning service permission change message is sent after the service entity receives a positioning service permission change indication message sent by the target terminal through an application layer and performs positioning service permission change on the target terminal, and the first positioning service permission change message is used to indicate the positioning server to store the changed position of the target terminal for a service permission and generate a key corresponding to the changed positioning service permission of the target terminal; the sending module is specifically configured to send a second location service permission change message to a user subscription information server, where the second location service permission change message carries location service permission information after the target terminal is changed, and the second location service permission change message is used to instruct the user subscription information server to store the location service permission after the target terminal is changed.

Optionally, the receiving module is specifically configured to receive a location service permission change confirmation message sent by the user subscription information server, where the location service permission change confirmation message is used to indicate that the user subscription information server has saved the location service permission after the target terminal is changed and a key corresponding to the location service permission after the target terminal is changed.

Based on the same technical concept, the embodiment of the present application further provides a core network element, where the core network element may implement the flow shown in fig. 5.

Referring to fig. 15, a schematic structural diagram of a core network element according to an embodiment of the present application is provided. The core network element may include: a receiving module 1501, a notification module 1502, and a sending module 1503.

The receiving module 1501 is configured to receive a location service authority change message from a location server, where the location service authority change message carries location service authority information after a target terminal is changed.

A notification module 1502, configured to notify the target terminal that the location service authority is changed.

A sending module 1503, configured to send a first response message to the target terminal according to the received first request message sent by the target terminal according to the notification of the core network element, where the first response message carries the location service permission information after the target terminal is changed.

Optionally, the notification module is specifically configured to instruct a serving base station of the target terminal to send a system broadcast message, where the system broadcast message carries an identifier of the target terminal and positioning service permission change instruction information; or, instructing the serving base station of the target terminal to send a paging message, where the paging message carries an identifier of the target terminal and positioning service permission change instruction information; and the positioning service permission change indication information is used for indicating that the positioning service permission of the target terminal is changed.

Based on the same technical concept, an embodiment of the present application further provides a core network element, where the core network element may implement the flow shown in fig. 6.

Referring to fig. 16, for the structure of the core network element provided in the embodiment of the present application, the core network element may include: a receiving module 1601 and a sending module 1602.

A receiving module 1601, configured to receive a location service permission change message from a location server, where the location service permission change message carries location service permission information after a target terminal is changed and a key corresponding to the location service permission after the target terminal is changed, and the location service permission change message is used to instruct a core network element to store the location service permission after the target terminal is changed and the key corresponding to the location service permission after the target terminal is changed.

A sending module 1602, configured to send a location service permission configuration message to the target terminal, where the location service permission configuration message carries location service permission information after the target terminal is changed.

Based on the same technical concept, embodiments of the present application provide a core network element, which may implement the process shown in fig. 7.

Referring to fig. 17, a structural diagram of a core network element provided in this embodiment of the present application is shown, where the core network element may include: a receiving module 1701 and a sending module 1702.

The receiving module 1701 is configured to receive a first request message from a target terminal.

A sending module 1702, configured to send a location service right change instruction message to a user subscription information server, where the location service right change instruction message is used to request to obtain location service right information after the target terminal is changed.

The receiving module 1701 is further configured to receive a location service permission change confirmation message sent by the user subscription information server, where the location service permission change confirmation message carries location service permission change information after the target terminal is changed and a key corresponding to the location service permission after the target terminal is changed, and the location service permission change confirmation message is used to instruct the core network element to store the location service permission after the target terminal is changed and the key corresponding to the location service permission after the target terminal is changed.

The sending module 1702 is further configured to send a first response message to the target terminal, where the first response message carries a key corresponding to the location service permission information changed by the target terminal.

Based on the same technical concept, the embodiment of the present application further provides a communication device, which can implement the functions implemented in fig. 14 in the embodiment of the present application.

Referring to fig. 18, a schematic structural diagram of a communication device provided in the embodiment of the present application is shown, where the communication device may include: a processor 1801, a memory 1802, a transceiver 1803, and a bus interface 1804.

The processor 1801 is responsible for managing the bus architecture and general processing, and the memory 1802 may store data used by the processor 1801 in performing operations. The transceiver 1803 is used to receive and transmit data under the control of the processor 1801.

The bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 1801 and various circuits of memory represented by memory 1802 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The processor 1801 is responsible for managing the bus architecture and general processing, and the memory 1802 may store data used by the processor 1801 in performing operations.

The process disclosed in the embodiment of the present invention may be applied to the processor 1801, or implemented by the processor 1801. In implementation, the steps of the signal processing flow may be implemented by integrated logic circuits of hardware or instructions in the form of software in the processor 1801. The processor 1801 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or the like that may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 1802, and the processor 1801 reads the information in the memory 1802 and completes the steps of the signal processing flow in conjunction with the hardware thereof.

Specifically, the processor 1801 is configured to read the computer instructions in the memory 1802 and execute the functions implemented in fig. 14.

Based on the same technical concept, the embodiment of the present application also provides a communication device, which is capable of implementing the functions implemented in fig. 15 in the embodiment of the present application.

Referring to fig. 19, a schematic structural diagram of a communication device provided in the embodiment of the present application is shown, where the communication device may include: a processor 1901, a memory 1902, a transceiver 1903, and a bus interface 1904.

The processor 1901 is responsible for managing the bus architecture and general processing, and the memory 1902 may store data used by the processor 1901 in performing operations. The transceiver 1903 is used for receiving and transmitting data under the control of the processor 1901.

The bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 1901 and various circuits of memory represented by memory 1902 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The processor 1901 is responsible for managing the bus architecture and general processing, and the memory 1902 may store data used by the processor 1901 in performing operations.

The process disclosed in the embodiment of the present invention can be applied to the processor 1901, or implemented by the processor 1901. In implementation, the steps of the signal processing flow may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 1901. The processor 1901 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or the like that implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 1902, and the processor 1901 reads the information in the memory 1902 and completes the steps of the signal processing flow in conjunction with the hardware thereof.

Specifically, the processor 1901 is configured to read the computer instructions in the memory 1902 and execute the functions implemented in fig. 15.

Based on the same technical concept, the embodiment of the present application also provides a communication device, which is capable of implementing the function implemented in fig. 16 in the embodiment of the present application.

Referring to fig. 20, a schematic structural diagram of a communication device provided in the embodiment of the present application is shown, where the communication device may include: a processor 2001, a memory 2002, a transceiver 2003, and a bus interface 2004.

The processor 2001 is responsible for managing the bus architecture and general processing, and the memory 2002 may store data used by the processor 2001 in performing operations. The transceiver 2003 is used to receive and transmit data under the control of the processor 2001.

The bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by the processor 2001, and various circuits, represented by the memory 2002, linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The processor 2001 is responsible for managing the bus architecture and general processing, and the memory 2002 may store data used by the processor 2001 in performing operations.

The processes disclosed in the embodiments of the present invention may be applied to the processor 2001, or implemented by the processor 2001. In implementation, the steps of the signal processing flow may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 2001. The processor 2001 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or the like that implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 2002, and the processor 2001 reads information in the memory 2002 and completes steps of the signal processing flow in combination with hardware thereof.

In particular, the processor 2001, is used to read the computer instructions in the memory 2002 and to execute the functions implemented in fig. 16.

Based on the same technical concept, the embodiment of the present application further provides a communication device, which is capable of implementing the function implemented in fig. 17 in the embodiment of the present application.

Referring to fig. 21, a schematic structural diagram of a communication device provided in the embodiment of the present application is shown, where the communication device may include: a processor 2101, a memory 2102, a transceiver 2103, and a bus interface 2104.

The processor 2101 is responsible for managing the bus architecture and general processing, and the memory 2102 may store data used by the processor 2101 in performing operations. The transceiver 2103 is used for receiving and transmitting data under the control of the processor 2101.

The bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by the processor 2101, and various circuits, represented by the memory 2102, being linked together in particular. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The processor 2101 is responsible for managing the bus architecture and general processing, and the memory 2102 may store data used by the processor 2101 in performing operations.

The process disclosed by the embodiment of the invention can be applied to the processor 2101 or realized by the processor 2101. In implementation, the steps of the signal processing flow may be implemented by hardware integrated logic circuits in the processor 2101 or instructions in the form of software. The processor 2101 may be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 2102, and the processor 2101 reads information in the memory 2102, and completes the steps of the signal processing flow in conjunction with its hardware.

In particular, the processor 2101 is configured to read the computer instructions in the memory 2102 and perform the functions implemented in FIG. 17.

Based on the same technical concept, the embodiment of the application also provides a computer readable storage medium. The computer-readable storage medium stores computer-executable instructions for causing the computer to perform the process performed by the positioning server of fig. 14.

Based on the same technical concept, the embodiment of the application also provides a computer readable storage medium. The computer-readable storage medium stores computer-executable instructions for causing the computer to perform the process performed by the core network element in fig. 15.

Based on the same technical concept, the embodiment of the application also provides a computer readable storage medium. The computer-readable storage medium stores computer-executable instructions for causing the computer to perform the process performed by the core network element in fig. 16.

Based on the same technical concept, the embodiment of the application also provides a computer readable storage medium. The computer-readable storage medium stores computer-executable instructions for causing the computer to perform the process performed by the core network element in fig. 17.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A method for updating location service authority is characterized by comprising the following steps:

a positioning server receives a first positioning service authority changing message, wherein the first positioning service authority changing message is used for requesting to change the positioning service authority of a target terminal;

and the positioning server sends a second positioning service permission changing message to a core network element, wherein the second positioning service permission changing message carries the positioning service permission information changed by the target terminal, so that the core network element sends the positioning service permission information changed by the target terminal to the target terminal.

2. The method of claim 1, wherein after the location server receives the first location service permission change message, further comprising:

the positioning server sends a positioning service permission change indication message to a user signing information server, wherein the positioning service permission change indication message is used for indicating the user signing information server to determine the positioning service permission after the target terminal is changed;

and the positioning server receives a positioning service permission change confirmation message sent by the user subscription information server, wherein the positioning service permission change confirmation message carries the positioning service permission information after the target terminal is changed.

3. The method of claim 1, wherein after the location server receives the first location service permission change message, further comprising:

and the positioning server determines the positioning service authority information after the target terminal is changed according to the first positioning service authority change message and generates a key corresponding to the positioning service authority after the target terminal is changed.

4. The method of claim 2, wherein the location server receiving a first location service permission change message comprises:

the positioning server receives a first positioning service authority change message sent by the target terminal through an application layer;

the positioning server sends a second positioning service permission change message to a core network element, including:

and the positioning server sends a positioning service permission change message to the core network element, wherein the positioning service permission change message is used for indicating the core network element to store the positioning service permission information after the target terminal is changed and a key corresponding to the positioning service permission after the target terminal is changed.

5. The method of claim 1, wherein the location server receiving a first location service permission change message comprises:

the positioning server receives a first positioning service permission change message from the core network element, wherein the first positioning service permission change message is sent after the core network element receives an attachment request message or a tracking area update request message of the target terminal, the attachment request message or the tracking area update request message carries positioning service permission change indication information, and the positioning service permission change indication information is used for indicating to change the positioning service permission of the target terminal;

and the positioning server sends a second positioning service permission change message to the core network element, wherein the second positioning service permission change message is used for indicating the core network element to store the positioning service permission information after the target terminal is changed and a key corresponding to the positioning service permission after the target terminal is changed.

6. The method as claimed in claim 5, wherein after the location server receives the first location service right change message, further comprising:

and the positioning server verifies the integrity of the first positioning service permission change message, if the verification is passed and the user is allowed to carry out positioning service permission change, the positioning service permission after the target terminal is changed is determined, and a key corresponding to the positioning service permission after the target terminal is changed is generated.

7. The method of claim 5, wherein the first positioning service right change message is sent after the core network element determines that a new key needs to be generated for the target terminal;

after the location server receives the first location service permission change message, the method further comprises the following steps:

the positioning server generates a key corresponding to the positioning service authority changed by the target terminal for the target terminal according to the first positioning service authority changing message, wherein the key is used for decrypting broadcasted network auxiliary data;

the second location service permission change message sent by the location server to the core network element is used for indicating the core network element to store the location service permission information after the target terminal is changed and a key corresponding to the location service permission after the target terminal is changed.

8. The method as claimed in claim 5, wherein after the location server receives the first location service right change message, further comprising:

the positioning server sends a positioning service permission change indication message to a service entity, wherein the positioning service permission change indication message is used for indicating the service entity to determine the positioning service permission changed by the target terminal and generate a key corresponding to the positioning service permission changed by the target terminal;

and the positioning server receives a positioning service permission change response message sent by the service entity, wherein the positioning service permission change response message is used for indicating the positioning server to store the positioning service permission information after the target terminal is changed and a key corresponding to the positioning service permission after the target terminal is changed.

9. The method of claim 1, wherein the location server receiving a first location service permission change message comprises:

the positioning server receives a first positioning service permission change message which is from a user subscription information server and carries positioning service permission information after the target terminal is changed, the first positioning service permission change message is sent after the user subscription information server changes the positioning service permission of the target terminal according to a positioning service permission change indication message from a core network element, the positioning service permission change indication message is sent after the core network element receives an attachment request message or a tracking area update request message from the target terminal, the attachment request message or the tracking area update request message carries positioning service permission change indication information, and the positioning service permission change indication information is used for indicating to change the positioning service permission of the target terminal.

10. The method of claim 9, wherein after the location server receives the first location service permission change message, further comprising:

the positioning server sends a first positioning service authority changing message to a service entity, wherein the first positioning service authority changing message carries positioning service authority information changed by the target terminal, and the first positioning service authority changing message is used for indicating the service entity to generate a key corresponding to the positioning service authority changed by the target terminal;

and the positioning server receives a first positioning service permission change response message sent by the service entity, wherein the first positioning service permission change response message is used for indicating the positioning server to store a key corresponding to the positioning service permission changed by the target terminal.

11. The method of claim 1, wherein the location server receiving a first location service permission change message comprises:

the positioning server receives a first positioning service permission changing message from a service entity, wherein the first positioning service permission changing message is sent after the service entity receives a positioning service permission changing indication message sent by a target terminal through an application layer and carries out positioning service permission changing on the target terminal, and the first positioning service permission changing message is used for indicating the positioning server to store the positioning service permission changed by the target terminal and generating a key corresponding to the positioning service permission changed by the target terminal;

and the positioning server sends a second positioning service permission change message to a user signing information server, wherein the second positioning service permission change message carries the positioning service permission information after the target terminal is changed, and the second positioning service permission change message is used for indicating the user signing information server to store the positioning service permission after the target terminal is changed.

12. The method as claimed in claim 11, wherein after the location server sends the second location service right change message to the subscriber subscription information server, further comprising:

and the positioning server receives a positioning service permission change confirmation message sent by the user subscription information server, wherein the positioning service permission change confirmation message is used for indicating that the user subscription information server stores the positioning service permission after the target terminal is changed and a key corresponding to the positioning service permission after the target terminal is changed.

13. The method of claim 4, 5 or 7, wherein the core network element comprises an AMF or an MME.

14. A method according to claim 2, 9 or 11, wherein the user subscription information server comprises a UDM or a HSS.

15. The method of any one of claims 1-10, wherein the changed location service permission information of the target terminal comprises: one or more keys corresponding to the changed location service rights of the target terminal, the one or more keys being used for decrypting broadcasted network assistance data.

16. The method of claim 15, wherein the location service authority information changed by the target terminal further comprises:

a validity period;

tracking area indication information used;

key type indication information.

17. The method of any of claims 1-12, wherein the first location services rights change message carries one or more of the following information:

change instruction information used for indicating that the positioning service authority is changed;

change reason indication information for indicating the reason for the change of the positioning service authority;

the time limit information of the change is used for indicating temporary change or permanent change, and the time limit information of the change indicates that the validity period of the temporary change is included when the temporary change is carried out;

and the service type indicating information is used for indicating the target terminal to position the service permission change application to be a temporary application or a permanent application.

18. The method according to any of claims 1-12, wherein the location server is an LMF, and the core network element is an AMF or a UDM; or

The positioning server is E-SMLC, and the core network element is MME or HSS.

19. A method for updating location service authority is characterized by comprising the following steps:

a core network element receives a positioning service authority changing message from a positioning server, wherein the positioning service authority changing message carries positioning service authority information changed by a target terminal;

the core network element informs the target terminal that the positioning service authority is changed;

and the core network element receives a first request message sent by the target terminal according to the notification of the core network element, and sends a first response message to the target terminal, wherein the first response message carries the positioning service permission information after the target terminal is changed.

20. The method as claimed in claim 19, wherein said core network element notifying said target terminal that the location service authority is changed comprises:

the core network element indicates the service base station of the target terminal to send a system broadcast message, and the system broadcast message carries the identification of the target terminal and positioning service permission change indication information; or,

the core network element indicates the service base station of the target terminal to send a paging message, and the paging message carries the identification of the target terminal and positioning service authority change indication information;

and the positioning service permission change indication information is used for indicating that the positioning service permission of the target terminal is changed.

21. The method of claim 19, wherein the first request message is an attach request message and the first response message is an attach accept message; or,

the first request message is a tracking area update request message, and the first response message is a tracking area update acceptance message.

22. The method as claimed in any one of claims 19-21, wherein the location service right information changed by the target terminal comprises: one or more keys corresponding to the changed location service rights of the target terminal, the one or more keys being used for decrypting broadcasted network assistance data.

23. The method according to any of claims 19-21, wherein the core network element is an MME and the location server is an E-SMLC; or,

the network element of the core network is AMF, and the positioning server is LMF.

24. A method for updating location service authority is characterized by comprising the following steps:

a core network element receives a positioning service permission change message from a positioning server, wherein the positioning service permission change message carries positioning service permission information after a target terminal is changed and a key corresponding to the positioning service permission after the target terminal is changed, and the positioning service permission change message is used for indicating the core network element to store the positioning service permission after the target terminal is changed and the key corresponding to the positioning service permission after the target terminal is changed;

and the core network element sends a positioning service authority configuration message to the target terminal, wherein the positioning service authority configuration message carries the positioning service authority information changed by the target terminal.

25. The method of claim 24, wherein the location service authority information changed by the target terminal comprises: one or more keys corresponding to the changed location service rights of the target terminal, the one or more keys being used for decrypting broadcasted network assistance data.

26. A method according to claim 24 or 25, wherein the core network element is an AMF and the location server is an LMF.

27. A method for updating location service authority is characterized by comprising the following steps:

a core network element receives a first request message from a target terminal;

the core network element sends a positioning service permission change indication message to a user subscription information server, wherein the positioning service permission change indication message is used for requesting to acquire positioning service permission information changed by the target terminal;

the core network element receives a positioning service permission change confirmation message sent by the user subscription information server, wherein the positioning service permission change confirmation message carries the positioning service permission after the target terminal is changed and a key corresponding to the positioning service permission after the target terminal is changed, and the positioning service permission change confirmation message is used for indicating the core network element to store the positioning service permission after the target terminal is changed and the key corresponding to the positioning service permission after the target terminal is changed;

and the core network element sends a first response message to the target terminal, wherein the first response message carries a key corresponding to the positioning service authority changed by the target terminal.

28. The method as claimed in claim 27, wherein the location service right change confirmation message is sent by the subscriber subscription information server after acquiring location service right information changed by the target terminal from a service entity according to the received location service right change instruction message.

29. The method of claim 27, wherein the location service authority information changed by the target terminal comprises: one or more keys corresponding to the changed location service rights of the target terminal, the one or more keys being used for decrypting broadcasted network assistance data.

30. The method according to any of claims 27-29, wherein the core network element is an AMF, the location server is an LMF, and the user subscription information server is a UDM; or,

the core network element is MME, the positioning server is E-SMLC, and the user subscription information server is HSS.

31. A location services system, comprising:

the positioning server is used for receiving a first positioning service authority changing message, and the first positioning service authority changing message is used for requesting to change the positioning service authority of a target terminal;

a core network element, configured to receive a second location service permission change message sent by the location server, where the second location service permission change message carries location service permission information after the target terminal is changed;

the positioning server is also used for sending a second positioning service permission change message to the core network element;

and the core network element is also used for sending the positioning service permission information changed by the target terminal to the target terminal.

32. The location services system of claim 31, further comprising:

the user subscription information server is used for receiving a positioning service permission change indication message sent by the positioning server, wherein the positioning service permission change indication message is used for indicating the user subscription information server to determine the positioning service permission after the target terminal is changed;

and the user subscription information server is also used for sending a positioning service permission change confirmation message to the positioning server, wherein the positioning service permission change confirmation message carries the positioning service permission information after the target terminal is changed.

33. The location services system of claim 31, further comprising:

a service entity, configured to receive the location server permission change indication message, where the location service permission change indication message is used to indicate the service entity to determine a location service permission after the target terminal is changed, and generate a key corresponding to the location service permission after the target terminal is changed;

the service entity is further configured to send a location service permission change response message to a location server, where the location service permission change response message is used to instruct the location server to store the location service permission information after the target terminal is changed and a key corresponding to the location service permission after the target terminal is changed.

34. The location services system of claim 31, wherein the location server is further configured to:

receiving a first positioning service permission change message carrying positioning service permission information changed by the target terminal from a user subscription information server, wherein the first positioning service permission change message is sent by the user subscription information server after changing the positioning service permission of the target terminal according to a positioning service permission change indication message from a core network element, the positioning service permission change indication message is sent by the core network element after receiving an attachment request message or a tracking area update request message from the target terminal, the attachment request message or the tracking area update request message carries positioning service permission change indication information, and the positioning service permission change indication information is used for indicating to change the positioning service permission of the target terminal.

35. The location services system of claim 31, wherein the core network element is further configured to:

receiving a positioning service authority changing message from a positioning server, wherein the positioning service authority changing message carries positioning service authority information changed by a target terminal;

informing the target terminal that the positioning service authority is changed;

and receiving a first request message sent by the target terminal according to the notification of the core network element, and sending a first response message to the target terminal, wherein the first response message carries the positioning service permission information after the target terminal is changed.

36. The location services system of claim 31, wherein the core network element is further configured to:

receiving a first request message from a target terminal;

sending a positioning service permission change indication message to a user subscription information server, wherein the positioning service permission change indication message is used for requesting to acquire positioning service permission information changed by the target terminal;

receiving a positioning service permission change confirmation message sent by the user subscription information server, wherein the positioning service permission change confirmation message carries the positioning service permission after the target terminal is changed and a key corresponding to the positioning service permission after the target terminal is changed, and the positioning service permission change confirmation message is used for indicating the core network element to store the positioning service permission after the target terminal is changed and the key corresponding to the positioning service permission after the target terminal is changed;

and sending a first response message to the target terminal, wherein the first response message carries a key corresponding to the changed positioning service authority of the target terminal.

37. The location services system of any of claims 31-36, wherein the location server is an LMF, and the core network element is an AMF or a UDM; or

The positioning server is E-SMLC, and the core network element is MME or HSS.

38. A positioning server, comprising:

the system comprises a receiving module, a sending module and a receiving module, wherein the receiving module is used for receiving a first positioning service authority changing message which is used for requesting to change the positioning service authority of a target terminal;

a sending module, configured to send a second location service permission change message to a core network element, where the second location service permission change message carries location service permission information after the target terminal is changed, so that the core network element sends the location service permission information after the target terminal is changed to the target terminal.

39. The location server of claim 38, wherein the sending module is further to:

sending a positioning service permission change indication message to a user subscription information server, wherein the positioning service permission change indication message is used for indicating the user subscription information server to determine the positioning service permission after the target terminal is changed;

the receiving module is further configured to:

and receiving a positioning service permission change confirmation message sent by the user subscription information server, wherein the positioning service permission change confirmation message carries the positioning service permission information after the target terminal is changed.

40. The location server of claim 38, wherein the receiving module is further to:

and determining the positioning service authority information after the target terminal is changed according to the first positioning service authority change message, and generating a key corresponding to the positioning service authority after the target terminal is changed.

41. The positioning server of claim 39, wherein the receiving module is specifically configured to:

receiving a first positioning service authority change message sent by the target terminal through an application layer;

the sending module is specifically configured to:

and sending a positioning service permission change message to the core network element, wherein the positioning service permission change message is used for indicating the core network element to store the positioning service permission information after the target terminal is changed and a key corresponding to the positioning service permission after the target terminal is changed.

42. The positioning server of claim 38, wherein the receiving module is specifically configured to:

receiving a first positioning service permission change message from the core network element, where the first positioning service permission change message is sent by the core network element after receiving an attach request message or a tracking area update request message of the target terminal, where the attach request message or the tracking area update request message carries positioning service permission change indication information, and the positioning service permission change indication information is used for indicating to change a positioning service permission of the target terminal;

the sending module is specifically configured to:

and sending a second positioning service permission change message to the core network element, wherein the second positioning service permission change message is used for indicating the core network element to store the positioning service permission information after the target terminal is changed and a key corresponding to the positioning service permission after the target terminal is changed.

43. The location server of claim 42, wherein the receiving module is further to:

and verifying the integrity of the first positioning service permission change message, if the verification is passed, determining the positioning service permission changed by the target terminal, and generating a key corresponding to the positioning service permission changed by the target terminal.

44. The location server according to claim 42, wherein the first location service right change message is sent after the core network element determines that a new key needs to be generated for the target terminal;

the receiving module is further configured to:

generating a key corresponding to the changed positioning service authority of the target terminal for the target terminal according to the first positioning service authority change message, wherein the key is used for decrypting broadcasted network auxiliary data;

the second location service permission change message sent by the location server to the core network element is used for indicating the core network element to store the location service permission after the target terminal is changed and a key corresponding to the location service permission after the target terminal is changed.

45. The location server of claim 42, wherein the sending module is further to:

sending a positioning service permission change indication message to a service entity, wherein the positioning service permission change indication message is used for indicating the service entity to determine the positioning service permission changed by the target terminal and generating a key corresponding to the positioning service permission changed by the target terminal;

the receiving module is further configured to:

and receiving a positioning service permission change response message sent by the service entity, wherein the positioning service permission change response message is used for indicating the positioning server to store the positioning service permission information after the target terminal is changed and a key corresponding to the positioning service permission after the target terminal is changed.

46. The positioning server of claim 38, wherein the receiving module is specifically configured to:

47. The location server of claim 46, wherein the sending module is further to:

sending a first positioning service permission change message to a service entity, wherein the first positioning service permission change message carries positioning service permission information after the target terminal is changed, and the first positioning service permission change message is used for indicating the service entity to generate a key corresponding to the positioning service permission after the target terminal is changed;

the receiving module is further configured to:

and receiving a first positioning service permission change response message sent by the service entity, wherein the first positioning service permission change response message is used for indicating the positioning service permission to store a key corresponding to the positioning service permission changed by the target terminal.

48. The positioning server of claim 38, wherein the receiving module is specifically configured to:

receiving a first positioning service permission change message from a service entity, wherein the first positioning service permission change message is sent after the service entity receives a positioning service permission change indication message sent by a target terminal through an application layer and carries out positioning service permission change on the target terminal, and the first positioning service permission change message is used for indicating a positioning server to store the changed positioning of the target terminal to a service permission and generating a key corresponding to the changed positioning service permission of the target terminal;

the sending module is specifically configured to:

and sending a second positioning service permission change message to a user subscription information server, wherein the second positioning service permission change message carries the positioning service permission information after the target terminal is changed, and the second positioning service permission change message is used for indicating the user subscription information server to store the positioning service permission after the target terminal is changed.

49. The positioning server of claim 48, wherein the receiving module is specifically configured to:

and receiving a positioning service permission change confirmation message sent by the user subscription information server, wherein the positioning service permission change confirmation message is used for indicating that the user subscription information server stores the positioning service permission changed by the target terminal and a key corresponding to the positioning service permission changed by the target terminal.

50. The location server according to any of claims 38-49, wherein the changed location service permission information of the target terminal comprises: one or more keys corresponding to the changed location service rights of the target terminal, the one or more keys being used for decrypting broadcasted network assistance data.

51. The location server of claim 50, wherein the location service authority information of the target terminal after being changed further comprises: a validity period;

tracking area indication information used;

key type indication information.

52. Location server according to any of the claims 38-49, wherein the first location service permission change message carries one or more of the following information:

53. The positioning server according to any of claims 38-49, wherein the positioning server is an LMF, and the core network element is an AMF or a UDM; or

The positioning server is E-SMLC, and the core network element is MME or HSS.

54. A core network element, comprising:

the receiving module is used for receiving a positioning service authority changing message from a positioning server, wherein the positioning service authority changing message carries positioning service authority information changed by a target terminal;

the notification module is used for notifying the target terminal that the positioning service authority is changed;

and the sending module is used for sending a first response message to the target terminal according to the received first request message sent by the target terminal according to the notification of the core network element, wherein the first response message carries the positioning service permission information after the target terminal is changed.

55. The network element of the core network of claim 54, wherein the notification module is specifically configured to:

indicating a service base station of the target terminal to send a system broadcast message, wherein the system broadcast message carries an identifier of the target terminal and positioning service permission change indication information; or,

indicating the service base station of the target terminal to send a paging message, wherein the paging message carries the identification of the target terminal and positioning service authority change indication information;

56. The network element of claim 54, wherein the first request message is an attach request message and the first response message is an attach accept message; or,

57. The core network element of any one of claims 54-56, wherein the location service permission information after the change of the target terminal comprises: one or more keys corresponding to the changed location service rights of the target terminal, the one or more keys being used for decrypting broadcasted network assistance data.

58. A core network element according to any of claims 54-56, wherein the core network element is an MME and the location server is an E-SMLC; or,

59. A core network element, comprising:

a receiving module, configured to receive a location service permission change message from a location server, where the location service permission change message carries location service permission information after a target terminal is changed and a key corresponding to the location service permission after the target terminal is changed, and the location service permission change message is used to instruct a core network element to store the location service permission after the target terminal is changed and the key corresponding to the location service permission after the target terminal is changed;

and the sending module is used for sending a positioning service authority configuration message to the target terminal, wherein the positioning service authority configuration message carries the positioning service authority information changed by the target terminal.

60. The network element of claim 59, wherein the location service authority information changed by the target terminal comprises: one or more keys corresponding to the changed location service rights of the target terminal, the one or more keys being used for decrypting broadcasted network assistance data.

61. A core network element according to claim 59 or 60, wherein the core network element is an AMF and the location server is an LMF.

62. A core network element, comprising:

the receiving module is used for receiving a first request message from a target terminal;

a sending module, configured to send a location service permission change indication message to a user subscription information server, where the location service permission change indication message is used to request to obtain location service permission information after the target terminal is changed;

the receiving module is further configured to receive a positioning service permission change confirmation message sent by the user subscription information server, where the positioning service permission change confirmation message carries the positioning service permission after the target terminal is changed and a key corresponding to the positioning service permission after the target terminal is changed, and the positioning service permission change confirmation message is used to instruct the core network element to store the positioning service permission after the target terminal is changed and the key corresponding to the positioning service permission after the target terminal is changed;

the sending module is further configured to send a first response message to the target terminal, where the first response message carries a key corresponding to the location service right changed by the target terminal.

63. The network element of the core network of claim 62, wherein the positioning service right change confirmation message is sent by the user subscription information server after acquiring the positioning service right information changed by the target terminal from a service entity according to the received positioning service right change indication message.

64. The network element of claim 62, wherein the location service permission information changed by the target terminal comprises: one or more keys corresponding to the changed location service rights of the target terminal, the one or more keys being used for decrypting broadcasted network assistance data.

65. A core network element according to any of claims 62-64, wherein the core network element is an AMF, the location server is an LMF, and the user subscription information server is a UDM; or,

66. A communications apparatus, comprising: a processor, a memory, and a transceiver; the transceiver is used for receiving or transmitting information under the control of the processor; the processor, configured to read the computer instructions in the memory, and execute the method according to any one of claims 1 to 18.

67. A communications apparatus, comprising: a processor, a memory, and a transceiver; the transceiver is used for receiving or transmitting information under the control of the processor; the processor, configured to read the computer instructions in the memory, to perform the method according to any one of claims 19 to 23.

68. A communications apparatus, comprising: a processor, a memory, and a transceiver; the transceiver is used for receiving or transmitting information under the control of the processor; the processor, configured to read the computer instructions in the memory, and execute the method according to any one of claims 24 to 26.

69. A communications apparatus, comprising: a processor, a memory, and a transceiver; the transceiver is used for receiving or transmitting information under the control of the processor; the processor, configured to read the computer instructions in the memory, to perform the method according to any one of claims 27 to 30.

70. A computer-readable storage medium having stored thereon computer-executable instructions for causing a computer to perform the method of any one of claims 1 to 18.

71. A computer-readable storage medium having stored thereon computer-executable instructions for causing a computer to perform the method of any one of claims 19 to 23.

72. A computer-readable storage medium having stored thereon computer-executable instructions for causing a computer to perform the method of any one of claims 24 to 26.

73. A computer-readable storage medium having stored thereon computer-executable instructions for causing a computer to perform the method of any one of claims 27 to 30.