CN110351828A

CN110351828A - A kind of localization method and device

Info

Publication number: CN110351828A
Application number: CN201810301169.9A
Authority: CN
Inventors: 马景旺
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-04-04
Filing date: 2018-04-04
Publication date: 2019-10-18
Anticipated expiration: 2038-04-04
Also published as: CN110351828B; WO2019192546A1

Abstract

The application provides a kind of localization method and device.This method comprises: location management network element receives the first message of the first network element, first message includes the mark of terminal, and first message is used for the location information of request terminal.Location management network element determines that the control plane of terminal is in congestion control state.Location management network element determines the precedence information for obtaining location information according to first message.Location management network element obtains the location information of terminal according to precedence information.Location management network element sends the location information of terminal to the first network element.This method can determine the corresponding method for obtaining terminal positional information according to the precedence information for obtaining terminal location, on the one hand the location information for having got terminal in a manner of more flexible is realized, the expense for saving terminal and network is on the other hand additionally aided.

Description

A kind of localization method and device

Technical field

This application involves mobile communication technology field more particularly to a kind of localization methods and device.

Background technique

With the development of communication technology, the 5th generation (the 5th generation, 5G) communication system network has been applied In fields such as Internet of Things, Industry Controls, and applications need to obtain the location information of terminal by 5G network, and according to end The location information at end realizes related application and service, such as according in location information realization active push, item tracking, factory Equipment be accurately positioned etc. functions.Therefore 5G network needs to enhance the location information supported to the open terminal of applications.

The core net of 5G network manages a large amount of terminal device, since positioning service and other kinds of business largely account for It is connected with terminal with internetwork control plane, larger load will cause to the connection of network-based control face, thus cause control plane can Congestion control can be executed to certain terminals, so that terminal enters congestion control state.Under the situation, how to realize with more clever Mode living obtains the location information of terminal, and there is presently no provide corresponding solution.

Summary of the invention

The application provides a kind of localization method and device, with the location information for the terminal that more flexible mode obtains.

In a first aspect, the application provides a kind of localization method, comprising: the first of location management network element the first network element of reception disappears Breath, first message include the mark of terminal, and first message is used for the location information of request terminal.Location management network element determines The control plane of terminal is in congestion control state.Location management network element determines according to first message and obtains the preferential of location information Grade information.Location management network element obtains the location information of terminal according to precedence information.Location management network element is sent out to the first network element It makes arrangements for his funeral the location information at end.

The above method can determine corresponding acquisition terminal positional information according to the precedence information for obtaining terminal location Method, on the one hand realize the location information for having got terminal in a manner of more flexible, on the other hand additionally aid Save the expense of terminal and network.

In a kind of possible implementation method, precedence information is normal priority；Location management network element is according to priority Information obtains the location information of terminal, then location information of the location management network element from the local terminal for obtaining and saving.Optionally, Location information includes the time of the position of terminal and the position of acquisition terminal.

In another possible implementation method, precedence information is high priority；Location management network element is according to priority Information obtains the location information of terminal, comprising: location management network element obtains measurement data from terminal；Location management network element according to Measurement data determines the location information of terminal.

The above method, when precedence information is normal priority, then location management network element obtains the end saved from local The location information at end, to be conducive to save the expense of terminal and network element.And only when precedence information is high priority, position Managed network element is set just to obtain measurement data from terminal and determine the location information of terminal according to measurement data.To the embodiment Facilitate the expense for saving terminal and network on the whole.

In a kind of possible implementation method, location management network element obtains measurement data from terminal, comprising: if mobility pipe The load value for managing network element is greater than load threshold value, then location management network element obtains the measurement number of terminal by the user face connection of terminal According to；Person, if the load value of mobile management network element is not more than load threshold value, location management network element is connected by the control plane of terminal Obtain the measurement data for taking terminal.

This method, when the control plane of terminal is in higher load condition, location management network element is connected by the user face of terminal The measurement data for taking terminal is obtained, when the control plane of terminal is in low load condition, control that location management network element passes through terminal Face connection processed obtains the measurement data of terminal.On the one hand the measurement data of terminal can be efficiently obtained, to facilitate quickly To the location information of the first network element feedback terminal；On the other hand, the pressure that can mitigate the control plane of terminal helps to promote net Network performance.

In a kind of possible implementation method, location management network element receives the load condition letter from mobile management network element Breath, load status information includes load value.

In a kind of possible implementation method, location management network element determines that the control plane of terminal is in congestion control state packet Include: location management network element receives the second message from mobile management network element, and second message includes the mark of terminal, and second disappears Breath is for notifying the control plane of terminal to be in congestion control state.

In a kind of possible implementation method, first message includes instruction information, and instruction information, which is used to indicate, obtains position The precedence information of information；Alternatively, first message includes the precedence information for obtaining location information.

Second aspect, the application provide a kind of localization method, comprising: the first of location management network element the first network element of reception disappears Breath, first message include the mark of terminal, and first message is used for the location information of request terminal；If mobile management network element Load value be greater than load threshold value, then location management network element obtains the measurement data of terminal by the connection of the user face of terminal；Position Managed network element is set according to measurement data, determines the location information of terminal；Location management network element sends the position of terminal to the first network element Confidence breath.

This method, when the control plane of terminal is in higher load condition, location management network element is connected by the user face of terminal Obtain the measurement data for taking terminal.On the one hand the measurement data of terminal can be efficiently obtained, to facilitate quickly to first The location information of network element feedback terminal realizes the location information that terminal has been got in a manner of more flexible；On the other hand, The pressure that the control plane of terminal can be mitigated helps to promote network performance.

In a kind of possible implementation method, if the load value of mobile management network element is not more than load threshold value, position Managed network element obtains the measurement data of terminal by the control plane connection of terminal.

The third aspect, the application provide a kind of localization method, comprising: location management network element, which receives, comes from mobile management network The request message of member, request message include the mark of terminal, and request message is used to request the position location services of activated terminals；Position Set the location data that managed network element obtains terminal；If location management network element is determined to the position of activated terminals according to location data Positioning service, then send instruction information to mobile management network element, and the position that instruction information is used to indicate activated terminals is fixed Position service.

By the above method, it can be achieved that location management network element provides the positioning service of terminal, subsequent external application is if desired Or the location information of the terminal, then it can be to the location information of the location management network element request terminal, then by position Managed network element provides the location information of the terminal for applications.The position of terminal is provided by location management network element for applications Confidence breath, realizes the location information that terminal is obtained in a manner of more flexible.

In a kind of possible implementation method, location management network element sends location management network element to mobile management network element Coverage.

In a kind of possible implementation method, location management network element sends first to mobile management network element and subscribes to request letter Breath, the first subscription solicited message are used to subscribe to the control plane connection status of terminal.

In a kind of possible implementation method, location management network element sends second to mobile management network element and subscribes to request letter Breath, the second subscription solicited message are used to subscribe to the load status information of mobile management network element.

In a kind of possible implementation method, location management network element sends registration request to uniform data managed network element and disappears Breath, login request message includes the type of the mark of location management network element, the mark of terminal and location management network element.

Fourth aspect, the application provide a kind of localization method, comprising: mobile management network element receives the registration for carrying out self terminal Request message, login request message include the first instruction information, and the first instruction information is used to indicate enabling position location services；It moves Mobility management network element sends request message to location management network element, and request message includes the mark of terminal, and request message is for asking Seek the position location services of activated terminals；Mobile management network element receives the second indication information from location management network element, the Two instruction information are used to indicate the position location services of activated terminals.

In a kind of possible implementation method, mobile management network element receives the location management net from location management network element The coverage of member.

In a kind of possible implementation method, mobile management network element receives the first subscription from location management network element and asks Information is sought, the first subscription solicited message is used to subscribe to the control plane connection status of terminal.

In a kind of possible implementation method, mobile management network element receives the second subscription from location management network element and asks Information is sought, the second subscription solicited message is used to subscribe to the load status information of mobile management network element.

5th aspect, the application provide a kind of device, which can be location management network element, be also possible to chip.It should Device has the function of realizing each embodiment of above-mentioned first aspect.The function can be by hardware realization, can also be by hard Part executes corresponding software realization.The hardware or software include one or more modules corresponding with above-mentioned function.

6th aspect, the application provide a kind of device, comprising: processor and memory；The memory for storing instruction, When the apparatus is operative, which executes the instruction of memory storage so that the device execute above-mentioned first aspect or Localization method in any implementation method of first aspect.It should be noted that the memory can integrate in processor, It can be independently of except processor.

7th aspect, the application provide a kind of device, which includes processor, and the processor is used for and memory coupling It closes, and reads the instruction in memory and execute any implementation method of above-mentioned first aspect or first aspect according to described instruction In localization method.

Eighth aspect, the application provide a kind of device, which can be location management network element, are also possible to chip.It should Device has the function of realizing each embodiment of above-mentioned second aspect.The function can be by hardware realization, can also be by hard Part executes corresponding software realization.The hardware or software include one or more modules corresponding with above-mentioned function.

9th aspect, the application provide a kind of device, comprising: processor and memory；The memory for storing instruction, When the apparatus is operative, which executes the instruction of memory storage so that the device execute above-mentioned second aspect or Localization method in any implementation method of second aspect.It should be noted that the memory can integrate in processor, It can be independently of except processor.

Tenth aspect, the application provide a kind of device, which includes processor, and the processor is used for and memory coupling It closes, and reads the instruction in memory and execute any implementation method of above-mentioned second aspect or second aspect according to described instruction In localization method.

Tenth on the one hand, and the application provides a kind of device, which can be location management network element, be also possible to chip. The device has the function of realizing each embodiment of the above-mentioned third aspect.The function can also be passed through by hardware realization Hardware executes corresponding software realization.The hardware or software include one or more modules corresponding with above-mentioned function.

12nd aspect, the application provide a kind of device, comprising: processor and memory；The memory refers to for storing It enables, when the apparatus is operative, which executes the instruction of memory storage, so that the device executes the above-mentioned third aspect Or the localization method in any implementation method of the third aspect.It should be noted that the memory can integrate in processor, It is also possible to independently of except processor.

13rd aspect, the application provide a kind of device, which includes processor, and the processor is used for and memory Coupling, and read the instruction in memory and execute any realization side of the above-mentioned third aspect or the third aspect according to described instruction Localization method in method.

Fourteenth aspect, the application provide a kind of device, which can be mobile management network element, are also possible to core Piece.The device has the function of realizing each embodiment of above-mentioned fourth aspect.The function can also be led to by hardware realization It crosses hardware and executes corresponding software realization.The hardware or software include one or more modules corresponding with above-mentioned function.

15th aspect, the application provide a kind of device, comprising: processor and memory；The memory refers to for storing It enables, when the apparatus is operative, which executes the instruction of memory storage, so that the device executes above-mentioned fourth aspect Or the localization method in any implementation method of fourth aspect.It should be noted that the memory can integrate in processor, It is also possible to independently of except processor.

16th aspect, the application provide a kind of device, which includes processor, and the processor is used for and memory Coupling, and read the instruction in memory and execute any realization side of above-mentioned fourth aspect or fourth aspect according to described instruction Localization method in method.

17th aspect, the application also provide a kind of readable storage medium storing program for executing, are stored with program in the readable storage medium storing program for executing Or instruction, when run on a computer, so that the arbitrary localization method of above-mentioned various aspects is performed.

18th aspect, the application also provides a kind of computer program product comprising instruction, when it is transported on computers When row, so that computer executes the arbitrary localization method in above-mentioned various aspects.

19th aspect, the application also provide a kind of system, which includes location management network element, the location management net Member can be used for executing the step of being executed in either above-mentioned first aspect and first aspect method by location management network element.At one In possible design, the system can also include mobile management network element, and the mobile management network element can be used in execution It states in either first aspect and first aspect method or in scheme provided in an embodiment of the present invention by mobile management network element The step of execution.In a possible design, the system can also include scheme provided in an embodiment of the present invention in position The other equipment, such as terminal device, etc. that managed network element and/or mobile management network element interact.

20th aspect, the application also provide a kind of system, which includes location management network element, the location management net Member can be used for executing the step of being executed in either above-mentioned second aspect and second aspect method by location management network element.At one In possible design, the system can also include mobile management network element, and the mobile management network element can be used in execution It states in either second aspect and second aspect method or in scheme provided in an embodiment of the present invention by mobile management network element The step of execution.In a possible design, the system can also include scheme provided in an embodiment of the present invention in position The other equipment, such as terminal device, etc. that managed network element and/or mobile management network element interact.

20th on the one hand, and the application also provides a kind of system, which includes location management network element, the location management Network element can be used for executing the step of being executed in either the above-mentioned third aspect and third aspect method by location management network element.One In a possible design, the system can also include mobile management network element, and the mobile management network element can be used for executing By mobile management network in either above-mentioned fourth aspect and fourth aspect method or in scheme provided in an embodiment of the present invention The step of member executes.In a possible design, the system can also include scheme provided in an embodiment of the present invention in position Set the other equipment, such as terminal device, etc. that managed network element and/or mobile management network element interact.

These aspects or other aspects of the application can more straightforward in the following description.

Detailed description of the invention

Fig. 1 is a kind of possible network architecture schematic diagram provided by the present application；

Fig. 2 is another possible network architecture schematic diagram provided by the present application；

Fig. 3 is a kind of localization method schematic diagram provided by the present application；

Fig. 4 is another localization method schematic diagram provided by the present application；

Fig. 5 is another localization method schematic diagram provided by the present application；

Fig. 6 is the acquisition methods schematic diagram of another measurement data provided by the present application；

Fig. 7 is a kind of schematic device provided by the present application；

Fig. 8 is location management network element structural schematic diagram provided by the present application；

Fig. 9 is another schematic device provided by the present application；

Figure 10 is mobile management network element structural schematic diagram provided by the present application.

Specific embodiment

In order to keep the purposes, technical schemes and advantages of the application clearer, below in conjunction with attached drawing to the application make into One step it is described in detail.Concrete operation method in embodiment of the method also can be applied to Installation practice or system embodiment In.Wherein, in the description of the present application, unless otherwise indicated, the meaning of " plurality " is two or more.

The network architecture and business scenario of the embodiment of the present application description are to more clearly illustrate that the application is implemented The technical solution of example, does not constitute the restriction for technical solution provided by the embodiments of the present application, those of ordinary skill in the art It is found that technical solution provided by the embodiments of the present application is for similar with the differentiation of the network architecture and the appearance of new business scene The technical issues of, it is equally applicable.

As shown in Figure 1, a kind of possible network architecture schematic diagram being applicable in for the application.The network architecture includes Position Pipe Manage network element and the first network element.Optionally, the network architecture further includes mobile management network element.

Location management network element, such as can be location management function (the location management in 5G Function, LMF) network element.The positioning function of location management network element support terminal, it can fixed from the acquisitions such as terminal and access net Position data, and determine according to location data the location information of terminal.Wherein, the signaling between terminal and location management network element can be with Pass through control plane connection or the connection transmission of user face.

First network element can be network opening function (network exposure function, NEF) network element, can be with It is Gateway Mobile Location Center (gateway mobile location centre, GMLC) network element.

Wherein, NEF network element, which is mainly responsible for, is safely supplied to third-party application clothes for service that 5G network provides and ability Business device, such as the location information of offer terminal give third-party application server.

GMLC network element can receive the request of the acquisition terminal location of external network function or application, ask described in the verifying Seek the location information after the request for permission to location management network element request terminal.And the position for the terminal that will acquire Confidence breath is supplied to external network function or application.

Mobile management network element, such as can be the access in 5G and mobile management function to ps domain (access and Mobility management function, AMF) network element.Mobile management network element is mainly responsible for the access and movement of terminal Property management comprising mobile management entity in network frame in long term evolution (long term evolution, LTE) (mobility management entity, MME) inner mobile management function to ps domain, and joined access management function.

It can be understood that above-mentioned function is either network element in hardware device, is also possible in specialized hardware The virtualization instantiated in upper runs software function or platform (for example, cloud platform).

For convenience of description, the application is subsequent indicates groups of users management function network element using LMF, indicates to move using AMF Property managed network element, using NEF indicate network opening functional network element, use GMLC indicate Gateway Mobile Location Center network element.

As shown in Fig. 2, being a kind of specific system architecture based on system architecture shown in FIG. 1.Including terminal, wireless access Network (radio access network) equipment, user's veil member of core net and the control plane network element of core net.Wherein, core User's veil member of heart net includes user plane functions (user plane function, UPF) network element, user face linkage function (user plane connection function, UCF) network element, the control plane network element of core net include AMF, NEF, LMF, GMLC and uniform data management (Unified Data Management, UDM) network element.

Wherein, RAN equipment is a kind of to provide the equipment of wireless communication function for terminal.RAN equipment includes base station, specifically Ground, for example including but be not limited to: next-generation base station (g nodeB, gNB), evolved node B in 5G (evolved node B, ENB), radio network controller (radio network controller, RNC), node B (node B, NB), base station controller (base station controller, BSC), base transceiver station (base transceiver station, BTS), family's base It stands (for example, home evolved nodeB or home node B, HNB), Base Band Unit (BaseBand Unit, BBU), pass Defeated point (transmitting and receiving point, TRP), launch point (transmitting point, TP), movement Switching centre etc..

UPF network element is mainly responsible for connection external network comprising the gateway of LTE (serving gateway, ) and the correlation function of public data network gateway (public data network GateWay, PDN-GW) SGW.

UCF network element establishes connection by UPF network element and terminal, it can be achieved that by user face transmission terminal and control veil Signaling between member.

UDM network element, the subscription data for management terminal.For example, being stored with the location data of terminal in UDM network element.

The terminal of the application is a kind of equipment with radio transmission-receiving function, can be deployed in land, including it is indoor or It is outdoor, hand-held or vehicle-mounted；(such as steamer) can also be deployed on the water surface；Can also dispose in the sky (such as aircraft, balloon and On satellite etc.).The terminal can be mobile phone (mobile phone), tablet computer (pad), the electricity with radio transmission-receiving function Brain, virtual reality (virtual reality, VR) terminal, augmented reality (augmented reality, AR) terminal, industry control Make the wireless terminal in (industrial control), the wireless terminal in unmanned (self driving), long-range doctor Treat wireless terminal, the wireless terminal in smart grid (smart grid), transportation safety in (remote medical) The wireless terminal in wireless terminal, smart city (smart city) in (transportation safety), wisdom family Wireless terminal etc. in (smart home).

Wherein, the location management network element in system architecture shown in FIG. 1, can be in system architecture shown in Fig. 2 LMF.The first network element in system architecture shown in FIG. 1 can be NEF or GMLC in system architecture shown in Fig. 2.Fig. 1 institute The mobile management network element in system architecture shown, can be the AMF in system architecture shown in Fig. 2.

In system architecture shown in Fig. 2, core network control surface uses serviceization framework, i.e. NEF, UDM, AMF in Fig. 2, LMF, GMLC etc. all have core net control function, are called mutually by serviceization interface between each other.Also, LMF is deployment In the control plane of core net, LMF is for providing the location information of terminal.

For convenience of description, the application is subsequent indicates user face linkage function network element using UCF, indicates unified number using UDM According to managed network element, user plane functions network element is indicated using UPF.

Below with reference to Fig. 1-Fig. 2, localization method provided by the present application is illustrated.

It should be noted that the application is not limited to Fig. 1-system architecture shown in Fig. 2, can also be applied to it is following its Its communication system, such as the 6th generation (the 6th generation, 6G) communication system architecture etc..Also, the application is above-mentioned The title of used each network element it is identical can be able to maintain function, but title can change in future communication systems.

As shown in figure 3, being a kind of schematic diagram of localization method provided by the present application, this method can be used for selecting one for terminal A LMF, and open the location service function of the LMF.This method includes following following steps:

Step 301, terminal sends login request message to AMF.Correspondingly, AMF receives the login request message.

The login request message includes the first instruction information, which, which is used to indicate, enables position positioning clothes Business.

As a kind of application scenarios, when terminal needs to access network after powering, terminal is sent out by RAN equipment to AMF Send registration request (registration request) message.

Step 302, AMF sends request message to LMF.Correspondingly, LMF receives the request message.

The request message includes the mark of terminal, which is used for the position location services for requesting to activate the terminal.

AMF is after the login request message for receiving terminal transmission, on the one hand, AMF can execute the business of endpoint to register Processing, including obtain user subscription data, with authentication server functions (authentication server function, AUSF) network element cooperation carries out authentication and the negotiation of key etc. to terminal, this partly belongs to the prior art, and details are not described herein.

On the other hand, AMF is also that terminal selects a LMF, and sends request message to the LMF of selection, is swashed for requesting The position location services for terminal that it serves somebody right.For example, AMF can be to network storage function (network function repository Function, NRF) network element request finds the LMF function of disposing, i.e., it is that terminal selects a LMF by NRF network element.

Step 303, LMF obtains the location data of terminal.

As a kind of implementation, LMF obtains terminal after the request message for receiving AMF transmission from request message Mark, then to the location data of the UDM request terminal.Wherein, location data includes but is not limited to: positioning service label The about open setting information etc. of data, positioning privacy settings information (privacy profile), positioning service.

As another implementation, LMF can also be from the local location data for obtaining the pre-stored terminal.

Step 304, LMF judges whether the position location services for capableing of activated terminals according to location data.

It, can be open according to the positioning service obtained from UDM if LMF is determined to the position location services of activated terminals Setting information enable corresponding localization process, such as terminal positional information is periodically provided, so as to so that is had requested that determines Business open setting information in position normally enables.

Step 305, LMF sends second indication information to AMF.Correspondingly, AMF receives the second indication information.

The second indication information is used to indicate the position location services of activated terminals.

Step 306, LMF sends the coverage of LMF to AMF.Correspondingly, AMF receives the coverage of the LMF.

After the coverage of LMF is sent to AMF, AMF is subsequent can be judged whether to need to be updated to end according to the coverage End provides the LMF of service.For example, AMF can reselect one for the terminal if terminal removes the coverage of the LMF LMF provides positioning service for the terminal.

The step 306 is optional step.Moreover if executing the step 306, as a kind of implementation, step Rapid 305 and step 306 can be executed respectively in different step.As another implementation, step 305 and step 306 are also It can be merged into a step to execute.

Further, it can also include the following steps 307.

Step 307, LMF sends first to AMF and subscribes to solicited message.Correspondingly, AMF receives the first subscription request letter Breath.

First subscription solicited message is used to subscribe to the control plane connection status of terminal.

For example, AMF can execute congestion control to part terminal when the load of AMF is higher, it is in congestion control state Terminal will enter Idle state, terminal will not actively initiate in the case where no high-priority service or urgency traffic and network Connection.

When LMF has subscribed the control plane connection status of the terminal to AMF, if AMF performs congestion control to the terminal, Then AMF can send a notification message to LMF, include mark, congested instruction and the timer of terminal in the notification message.The timing Device is used to indicate the duration of congestion control.To which LMF can determine that the terminal is in congestion control state.

Optionally, it can also include the following steps 308.

Step 308, LMF sends second to AMF and subscribes to solicited message.Correspondingly, AMF receives the second subscription request letter Breath.

Second subscription solicited message is used to subscribe to the load status information of AMF.

Wherein, load status information includes the load value of AMF, further can also include load threshold value.It can be appreciated that Load threshold value also can be only fitted on LMF, or LMF is obtained by its approach.Wherein, when the load value of AMF is greater than load threshold When value, then AMF is in higher load condition.When the load value of AMF is less than or equal to load threshold value, then AMF is in underload shape State.

It should be noted that above-mentioned steps 308 and step 309 can be in different step execution, it is also possible to merge It is executed in the same step.

Further, it can also include the following steps 309.

Step 309, LMF sends login request message to UDM, and correspondingly, UDM receives the login request message.

The login request message is used for the information registering of LMF to UDM.The login request message includes the mark of LMF, end The mark at end and the type of LMF.Wherein, the mark of LMF is used for the unique identification LMF, and the mark of terminal is used to indicate the LMF institute The terminal of service, it is a LMF that the type of LMF, which is used to indicate the network element,.

Further, it can also include the following steps 310.

Step 310, AMF sends registration received message to terminal.Correspondingly, terminal receives the registration received message.

The registration receives to be the response to the login request message of step 301.

By the above method, it can be achieved that selecting a LMF, the LMF to provide the positioning service of terminal, subsequent external for terminal It if desired or the location information of the terminal, then can be to the location information of the LMF request terminal, then by LMF using The location information of the terminal is provided for applications.There is provided the location information of terminal by LMF for applications, realize with compared with The location information of terminal is obtained for flexible mode.

Further, as shown in figure 4, the application also provides a kind of localization method, which opened in terminal Under the premise of opening location service function, it is embodied as applications and the location information of terminal is provided.Wherein, the positioning service of the terminal The open method of function can be method as shown in Figure 3, be also possible to other methods, the application is without limitation.It is shown in Fig. 4 Localization method the following steps are included:

Step 401, the first network element sends first message to LMF.Correspondingly, LMF receives the first message.

Here the first network element can be NEF or GMLC.First message includes the mark of terminal, and first message is for requesting Obtain the location information of terminal.

For example, the first network element is sent out after the request for receiving applications (such as Tencent's application, Jingdone district application) to LMF Send first message, the location information of the request terminal.

Step 402, LMF determines that the control plane of terminal is in congestion control state.

For example, LMF before above-mentioned steps 401, the congestion control state of the terminal is had subscribed to AMF, for example, LMF can The congestion control state of the terminal is subscribed in endpoint to register process shown in Fig. 3 to AMF.

When AMF determines that terminal is in congestion control state, AMF sends second message to LMF, which includes eventually The mark at end, the second message is for notifying the control plane of terminal to be in congestion control state.To which LMF can store the end The status information at end.

Therefore in the step 402, LMF can determine that the terminal is current by from the local status information for obtaining the terminal In congestion control state.

Step 403, LMF determines the precedence information for obtaining location information according to first message.

As a kind of implementation, which may include instruction information, and instruction information, which is used to indicate, obtains position The precedence information of information.To which LMF is according to the instruction information, the precedence information for obtaining location information can be determined.For example, Instruction information is 1 bit.When indicating information is " 1 ", indicate that the precedence information for obtaining location information is normal precedence Grade.When indicating information is " 0 ", indicate that the precedence information for obtaining location information is high priority.

As another implementation, which can also include the precedence information for obtaining location information.For example, The certain field of first message includes precedence information, which is " normal priority " or " high priority ".Then LMF The precedence information for obtaining location information can be directly determined according to first message.

Wherein, normal priority indicates that the requirement to the accuracy of the terminal location of acquisition is not very high.To which LMF can be with The real-time position information to the first network element feedback terminal is not needed.

High priority indicates that the requirement to the accuracy of the terminal location of acquisition is very high.For example, urgency traffic center or conjunction Method listening center request to the first network element send request for location services be exactly high priority request, thus the first network element to The precision degree of the terminal location of LMF request require it is relatively high, generally require obtain terminal real-time position information.

Further, LMF is after having determined the precedence information for obtaining terminal positional information, then according to precedence information, Obtain the location information of terminal.A point situation illustrates respectively below.

Situation one, precedence information are normal priority.

LMF if it is determined that precedence information be normal priority, then execute following steps 404 and step 407.

Step 404, location information of the LMF from the local terminal for obtaining and saving.

Since terminal is currently at congestion control state, in order to save the expense of terminal and network, when acquisition terminal location When the precedence information of information is normal priority, LMF does not just go to obtain the real-time position information of terminal, but LMF is local The location information of the terminal saved is obtained, and is sent to the first network element.

Wherein, the location information for the terminal that LMF is locally saved can be the terminal for LMF the last time getting and saving Location information.Location information for example may include the time stated the position of terminal and obtain the position of the terminal.

Situation two, precedence information are high priority.

LMF if it is determined that precedence information be high priority, then execute following steps 405- step 407.

Step 405, LMF obtains measurement data from terminal.

Although terminal is currently in congestion control state, the priority due to needing to obtain the terminal positional information is High priority, therefore LMF still needs the real-time position information for getting the terminal.Method particularly includes: LMF is obtained from terminal first Measurement data is taken, the location information that measurement data determines terminal is then based on, which is that the real time position of terminal is believed Breath.

Illustrate that LMF obtains two kinds of implementation methods of measurement data from terminal below:

Implementation method one, if it is determined that the load value of AMF is greater than load threshold value, then the user face connection for passing through terminal obtains LMF Take the measurement data of terminal.

For example, LMF can subscribe to the load status information of AMF to AMF, the load condition of itself is actively reported to by AMF LMF, so that LMF can get the load status information of AMF in real time.Wherein, load status information includes load value, further Ground can also include load threshold value.

LMF is if it is determined that the load value of AMF shows that AMF is in higher load condition, the i.e. control plane of terminal greater than load threshold value Connection load is higher.Thus LMF can connect the measurement data for obtaining terminal by the user face of terminal.As an example, LMF can To obtain the measurement data of terminal by UCF and UPF.

Implementation method two, if it is determined that the load value of AMF is not more than load threshold value, then the control plane for passing through terminal connects LMF Obtain the measurement data of terminal.

LMF shows that AMF is in low load condition if it is determined that the load value of AMF is less than or equal to load threshold value, i.e. terminal Control plane connection load is lower.Thus LMF can connect the measurement data for obtaining terminal by the control plane of terminal.As showing Example, LMF can obtain the measurement data of terminal by AMF.

Step 406, LMF determines the location information of terminal according to measurement data.

The specific implementation details for the location information that LMF obtains terminal according to measurement data is the prior art, no longer superfluous here It states.

Step 407, LMF sends the location information of terminal to the first network element.Correspondingly, the first network element receives the position of terminal Information.

LMF through the above steps 404 or through the above steps 405 and step 406, the available position to terminal is believed Breath, is then sent to the first network element for the location information of terminal in step 407.Further, the first network element can will acquire To location information be sent to applications, realize access of the applications to the location information of terminal.Also, LMF can be with According to the precedence information for obtaining terminal location, to determine the corresponding method for obtaining terminal positional information.Work as precedence information When for normal priority, then LMF is from the location information of the local terminal for obtaining and saving, and realizes and is obtained in a manner of more flexible The location information of terminal has been arrived, and has been conducive to save the expense of terminal and network element.And only when precedence information is Gao Youxian When grade, LMF just obtains measurement data from terminal and determines the location information of terminal according to measurement data.To which the embodiment has Help the expense for saving terminal and network on the whole.

As shown in figure 5, the application also provides another localization method, method includes the following steps:

Step 501, the first network element sends first message to LMF.Correspondingly, LMF receives the first message.

Step 502, if the load value of AMF is greater than load threshold value, LMF obtains terminal by the user face connection of terminal Measurement data.

Step 503, if the load value of AMF is not more than load threshold value, LMF obtains terminal by the control plane connection of terminal Measurement data.

Above-mentioned steps 502 and step 503 are that alternative executes.Wherein, it if the load value of AMF is greater than load threshold value, holds Row step 502.If the load value of AMF is not more than load threshold value, 503 are thened follow the steps.

Step 504, LMF determines the location information of terminal according to measurement data.

Step 505, LMF sends the location information of terminal to the first network element.Correspondingly, the first network element receives the position of terminal Information.

Further, the location information that the first network element can will acquire is sent to applications, realizes applications Access to the location information of terminal.

This method, when the control plane of terminal is in higher load condition, LMF obtains terminal by the user face connection of terminal Measurement data, when the control plane of terminal is in low load condition, LMF obtains the survey of terminal by the connection of the control plane of terminal Measure data.On the one hand the measurement data of terminal can be efficiently obtained, realizes and has got terminal in a manner of more flexible Location information, and facilitate quickly to the location information of the first network element feedback terminal；On the other hand, the control of terminal can be mitigated The pressure in face processed helps to promote network performance.

For the step 503 of implementation method one and embodiment shown in fig. 5 in the step 405 of embodiment shown in Fig. 4, The measurement data of terminal is obtained by the user face connection of terminal.As an example, a kind of concrete methods of realizing is given below, such as It is a kind of acquisition methods of measurement data provided by the present application shown in Fig. 6, comprising the following steps:

Step 601, LMF obtains the information of UCF from UDM.

For example, LMF can send request message, the mark of carried terminal in request message to UDM.UDM is according to terminal Mark obtains the information of UCF corresponding with the mark of the terminal, and the information for the UCF that will acquire is sent to LMF.

As a kind of alternative scheme of the step 601, LMF can also be from the local information for obtaining the corresponding UCF of terminal.

Step 602, LMF sends the mark and instruction information of terminal to UCF.Correspondingly, UCF receives the mark of terminal and refers to Show information.

The instruction information needs to be sent to terminal.The instruction information is used to indicate reporting measurement data.

Step 603, UCF determines the address of terminal according to the mark of terminal.

Step 604, UCF sends downstream message to terminal, and correspondingly, terminal receives the downstream message.

The downstream message includes instruction information.

As a kind of implementation, UCF can be established by UPF and be connect with the user face of terminal, then pass through UPF to end End sends downstream message.

Optionally, which can also be added by UCF using the safe code key negotiated when user face connects is established It is close.Terminal is decrypted after receiving the instruction information using identical code key.

Step 605, terminal sends upstream message to UCF.Correspondingly, UCF receives the upstream message.

Measurement data is carried on and reports in information after getting measurement data by terminal.

Then terminal sends upstream message to UCF, includes the mark of terminal in the upstream message and reports information.

Optionally, this reports information that can also be added by terminal using the safe code key negotiated when user face connects is established It is close.UCF is received after this reports information and is decrypted using identical code key.

Step 606, UCF determines that the network element for servicing the terminal is LMF.

UCF is determined as the terminal to provide the network element of service being LMF according to the mark of the terminal in upstream message.

Step 607, UCF reports information to LMF transmission, and correspondingly, LMF receives this and reports information.

This, which is reported, carries measurement data in information.

By above method, it can be achieved that LMF gets the measurement data of terminal by the user face of terminal.

Using integrated unit, what Fig. 7 showed a kind of device involved in the embodiment of the present invention can The exemplary block diagram of energy, the device 700 can exist in the form of software, or location management network element can also be position Set the chip in managed network element.Device 700 includes: processing unit 702 and communication unit 703, and communication unit 703 may include connecing Receive unit and transmission unit.Processing unit 702 is for carrying out control management to the movement of device 700.Communication unit 703 is for branch Hold the communication of device 700 Yu other network entities (such as terminal).Device 700 can also include storage unit 701, for storing The program code and data of device 700.

Wherein, processing unit 702 can be processor or controller, such as can be CPU, general processor, DSP, ASIC, FPGA or other programmable logic device, transistor logic, hardware component or any combination thereof.It can be with It realizes or executes and combine various illustrative logic blocks, module and circuit described in the disclosure of invention.The processing Device is also possible to realize the combination of computing function, such as combines comprising one or more microprocessors, the group of DSP and microprocessor Close etc..Communication unit 703 can be communication interface, transceiver or transmission circuit etc., wherein and the communication interface is to be referred to as, It in the specific implementation, the communication interface may include multiple interfaces, such as may include: location management network element and mobile management network Interface and/or other interfaces between member.Storage unit 701 can be memory.

Processing unit 702 can support device 700 to execute the movement of location management network element in above each method example, example Device 700 is such as supported to execute the step 304 in Fig. 3, the step 402 of Fig. 4, step 403, step 404, step 406, in Fig. 5 Step 504.Communication unit 703 can support the communication between device 700 and AMF, UDM, for example, communication unit 703 can prop up It holds device 700 and executes step 302 in Fig. 3, step 303, step 305- step 309, the step 404 in Fig. 4, step 405, step Step 501- step 503 in rapid 407, Fig. 5, step 505, the step 601 in Fig. 6, step 602, step 607.

When processing unit 702 is processor, communication unit 703 is communication interface, when storage unit 701 is memory, this Device 700 involved in inventive embodiments can be location management network element 800 shown in Fig. 8.

As shown in fig.8, the location management network element 800 includes: processor 802, communication interface 803, memory 801.It can Choosing, location management network element 800 can also include bus 804.Wherein, communication interface 803, processor 802 and memory 801 It can be connected with each other by bus 804；Bus 804 can be Peripheral Component Interconnect standard (peripheral component Interconnect, abbreviation PCI) bus or expanding the industrial standard structure (extended industry standard Architecture, abbreviation EISA) bus etc..The bus 804 can be divided into address bus, data/address bus, control bus etc.. Only to be indicated with a thick line in Fig. 8, it is not intended that an only bus or a type of bus convenient for indicating.

Using integrated unit, what Fig. 9 showed a kind of device involved in the embodiment of the present invention can Can exemplary block diagram, which can exist in the form of software, or mobile management network element can also be Chip in mobile management network element.Device 900 includes: processing unit 902 and communication unit 903, and communication unit 903 can wrap Include receiving unit and transmission unit.Processing unit 902 is for carrying out control management to the movement of device 900.Communication unit 903 is used In the communication for supporting device 900 and other network entities (such as terminal, location management network element).Device 900 can also include depositing Storage unit 901, program code and data for storage device 900.

Wherein, processing unit 902 can be processor or controller, such as can be CPU, general processor, DSP, ASIC, FPGA or other programmable logic device, transistor logic, hardware component or any combination thereof.It can be with It realizes or executes and combine various illustrative logic blocks, module and circuit described in the disclosure of invention.The processing Device is also possible to realize the combination of computing function, such as combines comprising one or more microprocessors, the group of DSP and microprocessor Close etc..Communication unit 903 can be communication interface, transceiver or transmission circuit etc., wherein and the communication interface is to be referred to as, It in the specific implementation, the communication interface may include multiple interfaces, such as may include: between mobile management network element and terminal Interface, interface and/or other interfaces between mobile management network element and location management network element.Storage unit 901, which can be, deposits Reservoir.

Processing unit 902 can support device 900 to execute the movement of mobile management network element in above each method example. Communication unit 903 can support the communication between device 900 and LMF, terminal, for example, communication unit 903 can support device 900 execute the step 301 in Fig. 3, step 302, step 305- step 308, and step 310, the step 405 in Fig. 4, in Fig. 5 Step 502, step 503.

When processing unit 902 is processor, communication unit 903 is communication interface, when storage unit 901 is memory, this Device 900 involved in inventive embodiments can be mobile management network element 1000 shown in Fig. 10.

As shown in fig.10, the mobile management network element 1000 includes: processor 1002, communication interface 1003, memory 1001.Optionally, mobile management network element 1000 can also include bus 1004.Wherein, communication interface 1003, processor 1002 And memory 1001 can be connected with each other by bus 1004；Bus 1004 can be pci bus or eisa bus etc..It is described Bus 1004 can be divided into address bus, data/address bus, control bus etc..For convenient for indicating, only with a thick line table in Figure 10 Show, it is not intended that an only bus or a type of bus.

In the above-described embodiments, can come wholly or partly by software, hardware, firmware or any combination thereof real It is existing.When implemented in software, it can entirely or partly realize in the form of a computer program product.The computer program Product includes one or more computer instructions.When loading on computers and executing the computer program instructions, all or It partly generates according to process or function described in the embodiment of the present invention.The computer can be general purpose computer, dedicated meter Calculation machine, computer network or other programmable devices.The computer instruction can store in computer readable storage medium In, or from a computer readable storage medium to the transmission of another computer readable storage medium, for example, the computer Instruction can pass through wired (such as coaxial cable, optical fiber, number from a web-site, computer, server or data center User's line (DSL)) or wireless (such as infrared, wireless, microwave etc.) mode to another web-site, computer, server or Data center is transmitted.The computer readable storage medium can be any usable medium that computer can access or It is comprising data storage devices such as one or more usable mediums integrated server, data centers.The usable medium can be with It is magnetic medium, (for example, floppy disk, hard disk, tape), optical medium (for example, DVD) or semiconductor medium (such as solid state hard disk (Solid State Disk, SSD)) etc..

Various illustrative logic units and circuit described in the embodiment of the present application can be by general processors, number Word signal processor, specific integrated circuit (ASIC), field programmable gate array (FPGA) or other programmable logic devices, from Door or transistor logic are dissipated, discrete hardware components or above-mentioned any combination of design carry out implementation or operation described function.It is logical It can be microprocessor with processor, optionally, which may be any traditional processor, controller, micro- Controller or state machine.Processor can also be realized by the combination of computing device, such as digital signal processor and Wei Chu Device, multi-microprocessor are managed, one or more microprocessors combine a digital signal processor core or any other like Configuration is to realize.

The step of method described in the embodiment of the present application or algorithm can be directly embedded into hardware, processor execute it is soft The combination of part unit or the two.Software unit can store in RAM memory, flash memory, ROM memory, EPROM storage Other any form of storaging mediums in device, eeprom memory, register, hard disk, moveable magnetic disc, CD-ROM or this field In.Illustratively, storaging medium can be connect with processor, so that processor can read information from storaging medium, and It can be to storaging medium stored and written information.Optionally, storaging medium can also be integrated into the processor.Processor and storaging medium can To be set in asic, ASIC be can be set in terminal device.Optionally, processor and storaging medium also can be set in end In different components in end equipment.

These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one The step of function of being specified in a box or multiple boxes.

Although in conjunction with specific features and embodiment, invention has been described, it is clear that, do not departing from this hair In the case where bright spirit and scope, it can be carry out various modifications and is combined.Correspondingly, the specification and drawings are only institute The exemplary illustration of the invention that attached claim is defined, and be considered as covered in the scope of the invention any and all and repair Change, change, combining or equivalent.Obviously, those skilled in the art various changes and modifications can be made to the invention without It is detached from the spirit and scope of the present invention.If in this way, these modifications and changes of the present invention belong to the claims in the present invention and its Within the scope of equivalent technologies, then the present invention is also intended to include these modifications and variations.

Claims

1. a kind of localization method characterized by comprising

Location management network element receives the first message of the first network element, and the first message includes the mark of terminal, and described first disappears Location information of the breath for terminal described in request；

The location management network element determines that the control plane of the terminal is in congestion control state；

The location management network element determines the precedence information for obtaining the location information according to the first message；

The location management network element obtains the location information of the terminal according to the precedence information；

The location management network element sends the location information of the terminal to first network element.

2. the method according to claim 1, wherein the precedence information is normal priority；The position Managed network element obtains the location information of the terminal according to the precedence information, comprising:

Location information of the location management network element from the local terminal for obtaining and saving.

3. according to the method described in claim 2, it is characterized in that, the location information includes position and the acquisition of the terminal The time of the position of the terminal.

4. the method according to claim 1, wherein the precedence information is high priority；The Position Pipe Network element is managed according to the precedence information, obtains the location information of the terminal, comprising:

The location management network element obtains measurement data from the terminal；

The location management network element determines the location information of the terminal according to the measurement data.

5. according to the method described in claim 4, it is characterized in that, the location management network element obtains measurement number from the terminal According to, comprising:

If the load value of mobile management network element is greater than load threshold value, the user that the location management network element passes through the terminal Face connection obtains the measurement data of the terminal；Alternatively,

If the load value of mobile management network element is not more than the load threshold value, the location management network element passes through the terminal Control plane connection obtain the measurement data of the terminal.

6. the method according to any one of claims 1 to 5, which is characterized in that described in the location management network element determines The control plane of terminal is in congestion control state

The location management network element receives the second message from mobile management network element, and the second message includes the terminal Mark, the second message is for notifying the control plane of the terminal to be in congestion control state.

7. a kind of localization method characterized by comprising

If the load value of mobile management network element is greater than load threshold value, the user that the location management network element passes through the terminal Face connection obtains the measurement data of the terminal；

The location management network element determines the location information of the terminal according to the measurement data；

8. the method according to any one of claim 7, which is characterized in that the method also includes:

If the load value of the mobile management network element is not more than the load threshold value, the location management network element passes through described The control plane connection of terminal obtains the measurement data of the terminal.

9. a kind of localization method characterized by comprising

Location management network element receives the request message from mobile management network element, and the request message includes the mark of terminal, The request message is used to request to activate the position location services of the terminal；

The location management network element obtains the location data of the terminal；

If the location management network element is determined to activate the position location services of the terminal according to the location data, to The mobile management network element sends instruction information, and the instruction information, which is used to indicate, has activated the position of the terminal to position Service.

10. according to the method described in claim 9, it is characterized in that, the method also includes:

The location management network element sends the coverage of the location management network element to the mobile management network element.

11. method according to claim 9 or 10, which is characterized in that the method also includes:

The location management network element sends first to the mobile management network element and subscribes to solicited message, and described first subscribes to request Information is used to subscribe to the control plane connection status of the terminal.

12. the method according to any one of claim 9 to 11, which is characterized in that the method also includes:

The location management network element sends second to the mobile management network element and subscribes to solicited message, and described second subscribes to request Information is used to subscribe to the load status information of the mobile management network element.

13. a kind of localization method characterized by comprising

Mobile management network element receives the login request message for carrying out self terminal, and the login request message includes the first instruction letter Breath, the first instruction information are used to indicate enabling position location services；

The mobile management network element sends request message to location management network element, and the request message includes the mark of the terminal Know, the request message is used to request to activate the position location services of the terminal；

The mobile management network element receives the second indication information from the location management network element, the second indication information It is used to indicate the position location services for having activated the terminal.

14. according to the method for claim 13, which is characterized in that the method also includes:

The mobile management network element receives the first subscription solicited message from the location management network element, and described first subscribes to Solicited message is used to subscribe to the control plane connection status of the terminal.

15. method described in 3 or 14 according to claim 1, which is characterized in that the method also includes:

The mobile management network element receives the second subscription solicited message from the location management network element, and described second subscribes to Solicited message is used to subscribe to the load status information of the mobile management network element.

16. a kind of device, which is characterized in that including transmission unit, receiving unit and processing unit；

The receiving unit, for receiving the first message of the first network element, the first message includes the mark of terminal, and described Location information of one message for terminal described in request；

The processing unit, for determining that the control plane of the terminal is in congestion control state；According to the first message, really Surely the precedence information of the location information is obtained；And according to the precedence information, obtain the position letter of the terminal Breath；

The transmission unit, for sending the location information of the terminal to first network element.

17. device according to claim 16, which is characterized in that the precedence information is normal priority；The place Unit is managed, specifically for the location information from the local terminal for obtaining preservation.

18. device according to claim 17, which is characterized in that the location information includes the position of the terminal and obtains Take the time of the position of the terminal.

19. device according to claim 16, which is characterized in that the precedence information is high priority；The processing Unit is specifically used for obtaining measurement data from the terminal；And according to the measurement data, determine the position of the terminal Information.

20. device according to claim 19, which is characterized in that the processing unit is specifically used for:

If the load value of mobile management network element is greater than load threshold value, the end is obtained by the user face connection of the terminal The measurement data at end；Alternatively,

If the load value of mobile management network element is not more than the load threshold value, is connected and obtained by the control plane of the terminal The measurement data of the terminal.

21. device described in any one of 6 to 20 according to claim 1, which is characterized in that the receiving unit is also used to receive Second message from mobile management network element, the second message include the mark of the terminal, and the second message is used for The control plane of the terminal is notified to be in congestion control state.

22. a kind of device, which is characterized in that including transmission unit, receiving unit and processing unit；

The processing unit passes through the use of the terminal if the load value for mobile management network element is greater than load threshold value The connection of family face obtains the measurement data of the terminal；And according to the measurement data, determine the location information of the terminal；

23. the device according to any one of claim 22, which is characterized in that the processing unit, if being also used to described The load value of mobile management network element is not more than the load threshold value, then obtains the end by the control plane connection of the terminal The measurement data at end.

24. a kind of device, which is characterized in that including transmission unit, receiving unit and processing unit；

The receiving unit, for receiving the request message from mobile management network element, the request message includes terminal Mark, the request message are used to request to activate the position location services of the terminal；And obtain the positioning number of the terminal According to；

The processing unit activates the position location services of the terminal for being determined to according to the location data；

The transmission unit, for sending instruction information to the mobile management network element, the instruction information is used to indicate Through the position location services for activating the terminal.

25. device according to claim 24, which is characterized in that the transmission unit is also used to the mobile management Network element sends the coverage of the location management network element.

26. the device according to claim 24 or 25, which is characterized in that the transmission unit is also used to the mobility Managed network element sends first and subscribes to solicited message, and the first subscription solicited message is used to subscribe to the control plane connection of the terminal State.

27. the device according to any one of claim 24 to 26, which is characterized in that the transmission unit is also used to institute It states mobile management network element and sends the second subscription solicited message, the second subscription solicited message is for subscribing to the mobility pipe Manage the load status information of network element.

28. a kind of device, which is characterized in that including transmission unit and receiving unit；

The receiving unit, for receiving the login request message for carrying out self terminal, the login request message includes the first instruction Information, the first instruction information are used to indicate enabling position location services；

The transmission unit, for sending request message to location management network element, the request message includes the mark of the terminal Know, the request message is used to request to activate the position location services of the terminal；

The receiving unit is also used to receive the second indication information from the location management network element, the second instruction letter Breath is used to indicate the position location services for having activated the terminal.

29. device according to claim 28, which is characterized in that the receiving unit is also used to receive from the position The first of managed network element subscribes to solicited message, and the first subscription solicited message is used to subscribe to the control plane connection shape of the terminal State.

30. the device according to claim 28 or 29, which is characterized in that the receiving unit is also used to receive from described The second of location management network element subscribes to solicited message, and the second subscription solicited message is for subscribing to the mobile management network element Load status information.