CN115150807B

CN115150807B - Position management method and system

Info

Publication number: CN115150807B
Application number: CN202211081200.5A
Authority: CN
Inventors: 殷卫海; 庞萌萌; 吴昊; 欧均富; 陈建鑫; 师进
Original assignee: CRSC Research and Design Institute Group Co Ltd
Current assignee: CRSC Research and Design Institute Group Co Ltd
Priority date: 2022-09-06
Filing date: 2022-09-06
Publication date: 2022-12-20
Anticipated expiration: 2042-09-06
Also published as: CN115150807A

Abstract

The invention discloses a position management method and a system, wherein the management method comprises the step of reporting position information after a terminal roams from a home location to a visited location, and the method comprises the following steps: the terminal acquires a position reporting strategy of a visited place, wherein the strategy comprises a plurality of trigger conditions; when a certain trigger condition occurs in the location reporting strategy of the visited place, the terminal reports the current location information to the location service network element of the visited place through the trunking communication application network element of the visited place, and synchronously reports the location information to the location service network element of the home place. The invention provides a reporting mechanism of the position information of the terminal in a roaming scene, realizes the position information synchronization of the terminal home location and the visited location through the network elements in each road office, and realizes the services of position information inquiry, subscription and the like by utilizing the network element database and the like in each road office.

Description

Position management method and system

Technical Field

The invention belongs to the field of railway communication, and particularly relates to a position management method and system.

Background

The railway mobile communication network is uniformly planned by all routes and divided into all-route public equipment, central equipment of a road bureau, stations, equipment along the route and the like according to functional characteristics. The whole road has a plurality of road offices, each road office has a respective jurisdiction, and in the long-distance running of the train, a cross-office switching scene exists. Based on the considerations of high safety, low time delay, high reliability, easy maintenance and the like of railway services, the networking requirements of the new generation of 5G-R system mainly comprise:

1. the all-path public equipment is primary node equipment for all-path public access and data all-path sharing;

2. the railway road bureau equipment is user, configuration/production data and road bureau central equipment which are managed by the road bureau (the difference between the whole-road public equipment and the road bureau central equipment is that the whole-road public equipment is a whole set of whole-road main and standby equipment and the data is shared in the whole road;

3. the key service adopts the local breakout mode of the visited place as much as possible (the local breakout of the visited place, namely, the roaming user uses the network and the service of the visited place to develop the service, so that the call delay of the services such as voice, video, data and the like can be reduced when switching between the cross-offices).

According to the second point requirement of the networking, the user data and the equipment configuration data of each road office can be different, the data of the road offices is kept in the local area as much as possible, and the road offices are not communicated with each other as much as possible. According to the third requirement of the networking, after the user roams to the visited place, the services such as authentication, registration and the like of the MCX of the visited place are required to be performed again, and local resources of the visited place are used as much as possible.

In the 5G-R system, the common configuration database CSC of the 5G-R MCX is a unified management service configured by MCX service users, and includes network elements such as a unified authentication service IDMS, a key management KMS, a location service LMS, a user configuration management CMS, and a group configuration management GMS. The location service LMS is a management service for reporting, storing and inquiring the user location, provides a foundation for various location-based applications, and belongs to central equipment of a road bureau. When a user roams to a visited road bureau, the position reporting of the roaming user faces two databases of home location LMS and visited location LMS, and the problems of reporting of the user position information, synchronization of the position information of the two LMS and the like need to be reasonably solved.

Disclosure of Invention

Aiming at the problems, the technical scheme adopted by the invention is as follows: a location management method, the management method includes the location information report after the terminal roams from the home location to the visit location, including the following steps:

the terminal acquires a position reporting strategy of a visited place, wherein the strategy comprises a plurality of trigger conditions;

when a certain trigger condition occurs in the location reporting strategy of the visited place, the terminal reports the current location information to the location service network element of the visited place through the trunking communication application network element of the visited place, and synchronously reports the location information to the location service network element of the home place.

Optionally, the step of the terminal using a dual session context mechanism to synchronously report the location information to the location service network element of the home location includes:

and the terminal reports the position information to a position service network element of the home location through a cluster communication application network element of the home location.

Optionally, the location reporting policy is managed by a user configuration management network element.

Optionally, when the terminal is located in the home location and acquires the location reporting policy of the home location, the method includes:

and the terminal acquires a location management related configuration file from a user configuration management network element of a home location, wherein the location management related configuration file comprises the location reporting policy and comprises a plurality of trigger conditions.

Optionally, the step of acquiring, by the terminal, the location reporting policy of the visited place includes:

the terminal updates a position reporting strategy from a position management related configuration file of a user configuration management network element of a home location; or

The terminal acquires a position reporting strategy from a user configuration management network element of the visited place, wherein the user configuration network element of the visited place is preconfigured with the position reporting strategy.

Optionally, the location reporting policy is managed by the location service network element.

Optionally, when the terminal is located in a home location and acquires a location reporting policy of the home location, the method includes:

and the terminal acquires a location management related configuration file from a location service network element of a home location, wherein the location management related configuration file comprises the location reporting policy and comprises a plurality of trigger conditions.

Optionally, the step of obtaining the location reporting policy by the terminal at the visited place includes:

the terminal updates a position reporting strategy from a position management related configuration file of a position service network element of a home location; or

The terminal acquires a position reporting strategy from a position service network element of a visited place, wherein the user configuration network element of the visited place is pre-configured with the position reporting strategy.

Optionally, the management method further includes reporting location information of the terminal in the home location, and includes the following steps:

and when a certain trigger condition in the location reporting strategy of the home location occurs, the terminal reports the current location information to the location service network element of the home location through the trunking communication application network element of the home location.

Optionally, the management method further includes changing the location reporting policy, including the following steps:

the position reporting strategy of a specific terminal is changed through a user configuration management network element, or the position reporting strategies of all terminals are changed through a network management maintenance network element.

and changing the position reporting strategy of a specific terminal through a position service network element, or changing the position reporting strategy of all terminals through a network management and maintenance network element.

Optionally, the management method further includes a location subscription of the first terminal to the second terminal, and if the first terminal and the second terminal belong to the same road bureau, the location subscription includes the following steps:

the first terminal sends a position subscription request for the second terminal to a position service network element of a home location of the second terminal through a trunking communication application network element of the current location;

the location service network element of the home location of the second terminal registers the location subscription request;

when the second terminal generates a triggering condition in a position reporting strategy, reporting the position information of the second terminal to a position service network element of a home location;

and the position service network element of the home location of the second terminal sends the position information to the first terminal through the trunking communication application network element of the current location of the first terminal.

Optionally, the management method further includes a location subscription of the first terminal to the second terminal, and if the first terminal and the second terminal belong to different roadways, the location subscription includes the following steps:

the first terminal sends a position subscription request for the second terminal to a trunking communication application network element where the first terminal is located currently, wherein the position subscription request carries trunking communication service IDs of the first terminal and the second terminal;

the trunking communication application network element of the current location of the first terminal inquires the home location of the second terminal according to the trunking communication service ID;

the cluster communication application network element at the current location of the first terminal sends the position subscription request to the position service network element at the home location of the second terminal;

Optionally, the management method further includes a self-history track query of the terminal, including the following steps:

the terminal sends a historical track query request to a location service network element of a home location through a cluster communication application network element of the current location;

and the position service network element of the terminal home location returns the stored position information list to the terminal through the cluster communication application network element of the current location.

Optionally, the management method further includes a historical track query of the first terminal to the second terminal, including the following steps:

the first terminal sends a historical track query request to a trunking communication application network element at the current location of the first terminal, wherein the historical track query request carries trunking communication service IDs of the first terminal and the second terminal;

the cluster communication application network element at the current location of the first terminal sends the historical track query request to the location service network element at the home location of the second terminal;

and the position service network element of the second terminal home location sends the stored position information list to the first terminal through the trunking communication application network element of the current location of the first terminal.

Optionally, the management method further includes a current location query of the first terminal to the second terminal, and if the first terminal and the second terminal belong to the same road bureau, the current location query includes the following steps:

the first terminal sends a current position query request for the second terminal to the second terminal through a trunking communication application network element of a first terminal home location;

and if the second terminal receives the current position query request, the second terminal sends the current position information of the second terminal to the first terminal through a trunking communication application network element of the home location of the first terminal.

Optionally, the management method further includes a current location query of the first terminal to the second terminal, and if the first terminal and the second terminal belong to different roadways, the current location query includes the following steps:

the first terminal sends a current position query request for the second terminal to a trunking communication application network element where the first terminal is located currently, wherein the current position query request carries trunking communication service IDs of the first terminal and the second terminal;

the trunking communication application network element at the current location of the first terminal sends the current position query request to the second terminal through the trunking communication application network element at the home location of the second terminal;

and if the second terminal receives the current position query request, the second terminal sends the current position information of the second terminal to the first terminal through a trunking communication application network element of the home location of the second terminal and a trunking communication application network element of the current location of the first terminal.

Optionally, before the terminal performs information transmission via the trunking communication application network element, the method includes the following steps:

the cluster communication application network element verifies the validity of the cluster communication session context of the terminal;

and if the verification is passed, the cluster communication application network element transmits the message.

And, a location management system, comprising:

the terminal is used for acquiring and storing a position reporting strategy, wherein the position reporting strategy comprises a plurality of trigger conditions; when a trigger condition in the position reporting strategy occurs, the terminal is also used for sending position information;

the trunking communication application network element is arranged in each road office and used for receiving and sending the position information sent by the terminal;

and the location service network element is arranged in each road office and used for receiving, storing and sending the location information sent by the trunking communication application network element.

Optionally, the terminal employs a dual session context mechanism, when the terminal roams from a home location to a visited location, and a certain trigger condition in a location reporting policy of the visited location occurs,

and the terminal reports the position information to the position service network element of the visited place through the cluster communication application network element of the visited place and synchronously reports the position information to the position service network element of the home place through the cluster communication application network element of the home place, so that the position service network element information of the home place and the visited place is synchronous.

Optionally, the management system further includes a user configuration management network element, where the user configuration management network element is configured to manage a location reporting policy.

Optionally, the location service network element is further configured to manage a location reporting policy.

Due to the adoption of the technical scheme, the invention has the following beneficial effects: the method provides a reporting mechanism of the position information of the terminal in the roaming scene, and realizes the position information synchronization of the terminal home location and the visited location through the network elements in each route bureau. And the services of position information inquiry, subscription and the like are realized by utilizing network metadata bases and the like in various roads.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.

Fig. 1 shows a flow chart of a mechanism for reporting location information to a home location and a visited location simultaneously by a terminal according to a first embodiment of the present invention and a second embodiment of the present invention;

fig. 2 shows a flowchart of location reporting policy acquisition, update and location reporting when a terminal of scenario one is located in a home location according to an embodiment of the present invention;

fig. 3 shows a flow chart of location reporting policy acquisition, update, and location reporting when a terminal roams in scenario two according to an embodiment of the present invention;

fig. 4 shows a flow chart of the same home office terminal location information query according to scenario three in the first embodiment of the present invention;

fig. 5 shows a flow chart of querying location information of different home office terminals according to a scenario four in the first embodiment of the present invention;

fig. 6 shows a flow chart of subscription of location information of the same home office terminal according to scenario five in the first embodiment of the present invention;

fig. 7 shows a flowchart of subscription for location information of different home office terminals according to a sixth scenario in the first embodiment of the present invention;

fig. 8 shows a flowchart of location reporting policy acquisition, update, and location reporting when a terminal of scenario one is located in a home location according to an embodiment of the present invention;

fig. 9 shows a flowchart of location reporting policy acquisition, update, and location reporting when the terminal roams in scenario two according to the second embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

The position management system of the embodiment of the invention comprises a terminal, a CSC, a MCX, a LMS, a CMS and an OMC, wherein each abbreviation is as follows:

configuring a database CSC;

a cluster communication application network element MCX;

a location services network element LMS;

a user configuration management network element CMS;

and the network management and maintenance network element OMC.

The CSC, MCX, LMS, CMS and OMC are respectively arranged in each road office, and each database is respectively managed.

Based on the location management system of the embodiment of the present invention, the embodiment of the present invention further provides the following two embodiments of location management methods, as follows:

example one

In a non-roaming scenario, the CMS is responsible for configuration management of a location reporting policy, and the terminal UE reports a mechanism to a home location.

The method comprises the following steps:

the terminal UE acquires IP address information of service network elements such as MCX, CMS, LMS and the like through a service discovery process;

the terminal UE passes the authentication of the unified authentication IDMS of the CSC to acquire access marks of services such as CMS, MCX, LMS and the like;

the terminal UE has successfully registered on the MCX and the MCX session context has been established.

See fig. 2 for a flowchart of location reporting policy acquisition, update, and location reporting when the terminal is located at the home location.

1. Acquiring a reporting strategy of a terminal UE position:

s1, a terminal UE obtains a User Profile of a User from a CMS (content management system) of a home location through HTTP Get, wherein the User Profile comprises a location reporting strategy of the UE, and the location reporting strategy comprises a plurality of triggering conditions for reporting location information, such as: the terminal UE upon receiving the configuration information reported by the location, upon initial registration, distance traveled, time elapsed, change of cell, MBMS SAI change, MBMS session change, leaving a specific MBMS bearer service area, tracking area TA change, change of PLMN, call origination or other type of event such as emergency alert, emergency call or imminent danger call, etc.

S2, the CMS issues a configuration file User Profile, wherein the configuration file User Profile comprises a trunking communication service ID (MC service ID) of the terminal UE and a position reporting strategy.

2. Updating a reporting strategy of a terminal UE position:

the administrator updates the location reporting policy of the terminal UE, and the administrator has two ways to modify the location reporting policy. And after the CMS or OMC position reporting strategy of the home location is modified, transmitting the modified CMS or OMC position reporting strategy to the terminal UE through the MCX.

In the first mode, an administrator modifies a location reporting policy for a specific terminal UE:

s11, the strategy configuration is modified through the CMS, wherein the strategy configuration is specific to a certain terminal UE and has no influence on other users or the UE. Wherein, the cancellation of the location reporting message of the terminal UE is also triggered by a cancellation procedure through configuration in the CMS.

S12, the CMS issues a position reporting strategy change message (or reports cancellation), and after the validity of a cluster communication session context (MCX session context) is checked on the UE through MCX, the UE is forwarded to the terminal UE. And the terminal UE judges the updated position reporting trigger condition and triggers the position information reporting according to the new position reporting strategy.

And in the second mode, the administrator modifies the unified position reporting strategy of all the terminal UE:

and S21, modifying through a background OMC, wherein the location reporting policy can be regarded as a location reporting policy of all users defaulted by the MCX system, and the priority is relatively low, namely when no location reporting policy of the user exists in the CMS or the policy does not take effect, using a unified location reporting policy of the OMC.

And S22, the OMC sends a position reporting strategy change message (or report cancellation) to the MCX, and the MCX stores the default position reporting configuration strategy without notifying and forwarding to the terminal UE. Note: the policy takes effect for a newly registered user, and takes effect when a registered user logs off and then registers.

3. Reporting the position information of the terminal UE:

s1, according to a received position reporting strategy, when a certain trigger condition occurs, terminal UE reports position information of the current terminal UE, wherein the position information carries MC service ID, trigger event, position information and the like, and the position information comprises information of measuring time, precision, longitude, latitude, speed, direction, altitude, ECGI, MBMS SAI and the like.

S2, the position information reported by the terminal UE is firstly verified by MCX for validity of the user (MCX session context verification), if the verification is successful, the MCX forwards the position reporting message to LMS, and if the verification fails, the MCX discards the position reporting message.

And S3, storing the position information of the terminal UE by the position service LMS.

And in a roaming scene, the CMS is responsible for the strategy configuration management of position reporting, and the terminal UE simultaneously reports the mechanism to the home location and the visited location LMS.

The method comprises the following steps:

the terminal UE acquires IP address information of services such as MCX, CMS, LMS and the like of a home location and a visited location through a service discovery process;

the terminal UE passes the authentication of the unified authentication IDMS of the CSC of the home location and the visit location to acquire access marks of services such as CMS, MCX, LMS and the like;

the terminal UE has successfully registered on the home location and visited location MCX service, and the MCX session context is established.

Referring to fig. 3, a flow chart of location reporting policy acquisition, update and location reporting when the terminal roams, and a flow chart of a mechanism for reporting location information to a home location and a visited location at the same time by the terminal shown in fig. 1 are shown.

1~3, and the terminal location reporting policy acquisition, update, and location reporting process of the home location are the same as the process 1~3 of scenario one above.

And after roaming handover, the terminal UE-1 moves to a visit place.

4. Acquiring a terminal position reporting strategy of a visited place:

the procedure is the same as procedure 1 of scenario one above.

In the first mode, the roaming terminal directly obtains or updates the location reporting policy from the User Profile of the CMS-1 of the home location, and the method needs to make a negotiation between the CMSs of the home location and the visited location on the premise of configuration management, so that the conflict between the location reporting policies of the CMS-1 and the CMS-2 is avoided. (this is not shown in FIG. 3)

And in the second mode, the roaming terminal directly accesses to the CMS-2 of the visited road bureau 2 to obtain the strategy list, and the CMS-2 or OMC-2 of the visited place configures the position reporting strategy list of the roaming user in advance by using a pre-configuration mode.

5. And (3) reporting strategy updating of the terminal position of the visited place:

the administrator updates the location reporting policy of the terminal UE, and the administrator has two ways to modify the location reporting policy. And after the CMS-2 or OMC-2 position reporting strategy of the visited place is modified, the modified position reporting strategy is issued to the terminal UE through the MCX-2 of the visited place.

In a first mode, an administrator modifies a location reporting policy for a specific terminal UE:

s11, the strategy configuration is modified through CMS-2 of the visited place, wherein the strategy configuration is specific to a certain terminal UE and has no influence on other users or UEs. The cancellation of the location reporting message of the terminal UE is also triggered by a cancellation procedure through configuration in the CMS-2 of the visited place.

S12, the CMS-2 at the visit place issues a position reporting strategy change message (or reports cancellation), and the validity of the cluster communication session context (MCX session context) is verified for the UE through the MCX-2 at the visit place and then the message is forwarded to the terminal UE. And the terminal UE judges the updated position reporting trigger condition and triggers the position information reporting according to the new position reporting strategy.

s21, the location reporting policy is modified through the background visited place OMC-2, wherein the location reporting policy can be regarded as a default location reporting policy of all users of the MCX system, the priority is relatively low, namely when no location reporting policy of the user exists in the visited place CMS-2 or the policy is not effective, the unified location reporting policy of the visited place OMC-2 is used.

S22, the OMC-2 at the visit place issues a position reporting strategy change message (or report cancellation) to the MCX-2 at the visit place, the MCX-2 stores the default position reporting configuration strategy and does not need to inform to be forwarded to the terminal UE. Note: the policy takes effect for a newly registered user, and takes effect when a registered user logs off and then registers.

6. Reporting the visited position information of the terminal UE:

S2, the position information reported by the terminal UE is firstly checked on the visited place MCX-2 for validity verification (MCX session context check), if the verification is successful, the visited place MCX-2 forwards the position reporting message to the visited place LMS-2, and if the verification is failed, the MCX-2 discards the position reporting message.

And S3, storing the position information of the terminal UE by the visited LMS-2.

7. Reporting the home location information of the terminal UE:

in order to ensure that the position information of the roaming terminal UE-1 in the home LMS-1 and the visited LMS-2 is synchronous, the roaming terminal UE-1 reports the current position information to the home LMS-1 at the same time, and the reported position information comprises the information of the measured time, precision, longitude, latitude, speed, azimuth, altitude, ECGI, MBMS SAI and the like.

Preferably, the roaming terminal UE-1 adopts a dual session context mechanism (i.e. the roaming terminal uses independent MCX session contexts in the home location and the visited location, and keeps two session contexts of MCX-1 and MCX-2, when the terminal roams from the previous visited location to the next visited location, the session context of the previous visited location is deleted, and the session context of the next visited location is reserved, so that the terminal always keeps two session contexts in the visited location), and the location synchronization report message of the roaming terminal UE-1 can directly use the session context of the home location MCX-1 to report to the location service LMS-1 through the home location MCX-1, so as to synchronize the location information of the home location and the visited location. At this time, the terminal stores two position reporting strategies of the home location and the visited location.

And a third scenario, inquiring the position information of the terminal UE (the terminal UE-1 and the terminal UE-2 belong to the same road bureau 1).

The terminal queries its own location history track, or the location or history track of other terminals, and this embodiment adopts a dual-session context mechanism. The dual session mechanism is a home roaming and visited local breakout mechanism, and comprises the following steps:

see fig. 4 for a flow chart of the same home office terminal location information query.

1. The terminal UE-1 inquires the position history track of the terminal UE-1:

s1, a terminal UE-1 initiates a history track query request, carries an MC service ID and a trigger condition (history track query), the query request is firstly sent to an MCX (if the terminal UE-1 is not roaming, the query request is sent to an attribution MCX-1, if the terminal UE-1 is roaming, the query request is sent to a visiting place MCX, the attribution place is taken as an example in figure 4), and the validity verification (MCX session context verification) is carried out on the terminal UE by the MCX-1 at the current place.

S2, if the verification is successful, the MCX at the current location forwards the position query request to the home LMS-1. If the check fails, the MCX discards the location query request message.

And S3, the home LMS-1 returns the position information list of the user to the MCX of the current location according to the stored position track information of the user, and the MCX forwards the position track list to the terminal UE-1.

2. The terminal UE-1 inquires the historical track of the terminal UE-2:

s1, a terminal UE-1 initiates a position history track inquiry request of a UE-2, carries MC service IDs and triggering conditions (history position inquiry) of the UE-1 and the UE-2, and the inquiry request is firstly sent to an MCX (if the terminal UE-1 is not roamed, the inquiry request is sent to a home MCX-1, and if the terminal UE-1 is roamed, the inquiry request is sent to a visited MCX).

S2, the MCX of the current location of the UE-1 carries out validity verification (MCX session context verification) on the terminal UE-1, if the verification is successful, the MCX of the UE-1 sends a subscription request to the home LMS-1 of the UE-2 and carries MC service IDs and triggering conditions (historical location query) of the UE-1 and the UE-2. If the check fails, the MCX where the UE-1 is currently located discards the UE-1 location query request message.

S3, the home LMS-1 of the UE-2 returns the position information list of the UE-2 to the MCX at the position of the UE-1 according to the stored position track information of the UE-2, and the MCX at the position of the UE-1 forwards the position information list of the UE-2 to the terminal UE-1.

3. Query by terminal UE-1 of the current position (instantaneous position) of terminal UE-2:

s1, a terminal UE-1 initiates a current position (instant position) query request of a UE-2, the current position (instant position) query request carries MC service IDs and triggering conditions (instant position query) of the UE-1 and the UE-2, and the current position query request is firstly sent to MCX-1 of a home location of the terminal UE-1 (whether the UE-1 roams or not is processed through the MCX of the home location).

S2, the MCX-1 of the UE-1 attribution carries out validity verification (MCX session context verification) on the terminal UE-1, if the verification is successful, the MCX-1 of the UE-1 attribution initiates a Location information Request instant Location Request message to the terminal UE-2, and carries MC service IDs and triggering conditions (instant Location query) of the UE-1 and the UE-2. If the check fails, the MCX-1 of the UE-1 home discards the UE-1 location query request message.

S3, after the terminal UE-2 receives the position request message, the terminal UE-2 user can accept or reject the position sharing request, if the UE-2 user accepts, the current position information of the UE-2 in the attribution MCX-1 of the UE-1 is returned, meanwhile, the current position information of the UE-2 is forwarded to the attribution LMS-1 of the UE-2, and the LMS-1 stores and updates the latest position information of the UE-2. If the UE-2 user rejects, a UE-2 location inaccessible message is returned.

S4, the MCX-1 of the home of the UE-1 forwards the position response message of the UE-2 to the UE-1. If the location response is a success message, then UE-1 successfully queries the instant location of UE-2.

And fourthly, inquiring the position information of the terminal UE (the terminal UE-1 belongs to a road office 1, and the UE-2 belongs to a road office 2).

Referring to fig. 5, a flow chart of location information query of different home office terminals is shown.

1. The terminal UE-1 inquires the historical track of the terminal UE-2:

s1, a terminal UE-1 initiates a position history track query request of UE-2, carries MC service IDs and trigger conditions (history position query) of UE-1 and UE-2, and the query request is firstly sent to MCX-n where UE-1 is located currently.

S2, the MCX-n of the current location of the UE-1 carries out validity verification (MCX session context verification) on the UE-1 of the terminal, if the verification is successful, the MCX-n of the current location of the UE-1 analyzes the MC service ID of the UE-2, inquires the local direction of the home location of the UE-2, sends a subscription request to the LMS-2 of the home location of the UE-2, and carries the MC service IDs of the UE-1 and the UE-2 and trigger conditions (historical location inquiry). And if the check fails, the MCX-n where the UE-1 is currently located discards the UE-1 location query request message.

S3, the home LMS-2 of the UE-2 returns the position information list of the UE-2 to the MCX-n where the UE-1 is located at present according to the stored position track information of the UE-2, and the MCX-n where the UE-1 is located at present forwards the position information list of the UE-2 to the terminal UE-1.

2. Query by terminal UE-1 of the current position (instantaneous position) of terminal UE-2:

s1, a terminal UE-1 initiates a current position (instant position) query request of UE-2, carries MC service IDs and triggering conditions (instant position query) of the UE-1 and the UE-2, and the current position query request is firstly sent to an MCX-n at the current location of the terminal UE-1.

S2, the MCX-n of the current Location of the UE-1 carries out validity verification (MCX session context verification) on the UE-1, if the verification is successful, the MCX-n of the current Location of the UE-1 analyzes the MC service ID of the UE-2, the local direction of the attribution of the UE-2 is inquired, the current Location inquiry Request is sent to the MCX-2 of the attribution of the UE-2, the Location information Request instant Location Request message is sent to the terminal UE-2 through the MCX-2 of the attribution of the UE-2, and the MC service ID and the triggering condition (instant Location inquiry) of the UE-1 and the UE-2 are carried. And if the check fails, the MCX-n where the UE-1 is currently located discards the UE-1 location query request message.

S3, after the terminal UE-2 receives the position request message, the terminal UE-2 user can accept or reject the position sharing request, if the UE-2 user accepts, the current position information of the UE-2 is returned to the attributive MCX-2 of the UE-2, the attributive MCX-2 of the UE-2 forwards the position information of the UE-2 to the current location MCX-n of the UE-1, and meanwhile, the current position information of the UE-2 is forwarded to the attributive LMS-2 of the UE-2, and the LMS-2 stores and updates the latest position information of the UE-2. If the UE-2 user rejects, a UE-2 location inaccessible message is returned.

S4, the MCX-n where the UE-1 is located currently forwards the position response message of the UE-2 to the UE-1. If the location response is a success message, then UE-1 successfully queries the instant location of UE-2.

And a fifth scenario, subscribing or canceling the position of the terminal UE-1 (the terminal UE-1 and the terminal UE-2 belong to the same road bureau 1).

See figure 6 for a same home office terminal location information subscription flow diagram.

The terminal UE-1 subscribes or cancels the position information of the user UE-n in order to acquire the position change information of other users such as UE-n of the same home office in time. In the following, the location information of the UE-1 subscribed to UE-2 is taken as an example:

s1, a terminal UE-1 initiates a position subscription request of a UE-2, carries MC service IDs and triggering conditions (subscription notification) of the UE-1 and the UE-2, and a request message is sent to an MCX-n where the UE-1 is located at present (if the terminal UE-1 is not roamed, the request message is sent to a home MCX, and if the terminal UE-1 is roamed, the request message is sent to a visited MCX).

S2, the MCX-n where the UE-1 is located currently carries out validity verification (MCX session context verification) on the terminal UE-1, if the verification is successful, the MCX-n where the UE-1 is located currently sends a subscription request to the home LMS-1 of the UE-2, the MC service ID of the UE-1 and the MC service ID of the UE-2 are carried, the home LMS-1 of the UE-2 registers the subscription request, and records the current MCX-n office direction (namely the current MCX is the home or the visited place) of the UE-1) (the UE-1 periodically updates the latest road office MCX office direction information of the UE-1 from the home LMS-1 of the UE-2, so that the subsequent subscription notification message can be timely notified to the UE-1). If the verification fails, the process ends.

And S3, when the UE-2 triggers a condition due to a certain position, reporting the current position information to the LMS-1 of the home of the UE-2 (if the UE-2 roams, reporting to the LMS of the visited place of the UE-2) through the MCX-n where the UE-2 is located.

S4, the home LMS-1 of the UE-2 judges the subscription relationship of the UE-2 of the user, generates a position change notification message, carries the MC service ID of the UE-1, the trigger condition (subscription notification) and the position information of the UE-2, forwards the message to the MCX-n where the UE-1 is located currently, and forwards the MCX-n where the UE-1 is located currently to the user such as the UE-1 (or other UE-n) which has subscribed to the UE-2.

S5, the terminal UE-1 can cancel the subscription location notification service according to the requirement, carries the MC service ID and the trigger condition (subscription cancellation) of the UE-1 and the UE-2 (or the UE-n List List), and forwards the subscription cancellation message to the LMS of the home location of the UE-2 after the MCX-n check of the UE-1 is successful, so as to cancel the location subscription service of the UE-1.

And a sixth scenario, subscribing or canceling the terminal UE position (the terminal UE-1 belongs to the road office 1, and the UE-2 belongs to the road office 2).

See figure 7 for a different home office terminal location information subscription flow diagram.

The terminal UE-1 subscribes or cancels the position information of the user UE-n in order to acquire the position change information of other users such as UE-n of different home offices in time. In the following, the location information of the UE-1 subscribed to UE-2 is taken as an example to describe:

s1, a terminal UE-1 initiates a position subscription request of UE-2, carries MC service IDs and triggering conditions (subscription notification) of UE-1 and UE-2, and a request message is sent to MCX-n of the current location of UE-1.

S2, MCX-n of the current location of the UE-1 verifies the validity of the terminal UE-1 (MCX session context verification), if the verification is successful, the MCX-n of the current location of the UE-1 analyzes the MC service ID of the UE-2, the office direction of the home location of the UE-2 is inquired, a subscription request is sent to the LMS-2 of the home location of the UE-2, the MC service ID of the UE-1 and the UE-2 and a trigger condition (subscription notification) are carried, the LMS-2 of the home location of the UE-2 registers the subscription request, and the current MCX-n office direction of the UE-1 (namely the current MCX is the home location or the visit location) is recorded (the UE-1 periodically updates the MCX office direction information of the UE-1 to the LMS-2 of the home location of the UE-2, so that subsequent subscription notification messages can be timely notified to the UE-1). If the verification fails, the process ends.

And S3, when the UE-2 triggers a condition due to a certain position, reporting the current position information to the LMS-1 of the home of the UE-2 (if the UE-2 roams, reporting the current position information to the LMS of the visited place of the UE-2, wherein the specific reporting process is shown as field Jing Er in the embodiment).

S4, the home LMS-2 of the UE-2 judges the subscription relationship of the UE-2 of the user, generates a position change notification message, carries the MC service ID of the UE-1, the trigger condition (subscription notification) and the position information of the UE-2, forwards the message to the MCX-n of the current location of the UE-1, and forwards the message to the UE-1.

S5, the terminal UE-1 can cancel the subscription position notification service according to the requirement, carries the MC service ID and the trigger condition (subscription cancellation) of the UE-1 and the UE-2 (or a UE-n List List), and forwards the subscription cancellation message to the home LMS-2 of the UE-2 after the MCX-n check of the current location of the UE-1 is successful, so as to cancel the position subscription service of the UE-1.

Example two

In a non-roaming scene, the LMS is responsible for configuration management of a position reporting strategy, and the terminal UE reports a mechanism to a home location.

The method comprises the following steps:

the terminal UE acquires IP address information of services such as MCX, CMS, LMS and the like through a service discovery process;

the terminal UE passes the authentication of the unified authentication IDMS of the CSC to acquire the access Token of services such as CMS, MCX, LMS and the like;

the terminal UE has successfully registered on the MCX service and the MCX session context has been established.

See fig. 8 for a flowchart illustrating the location reporting policy acquisition, update, and location reporting when the terminal is located at the home location.

1. Acquiring a reporting strategy of a terminal UE position:

s1, a terminal UE obtains a configuration file Location Profile of a user from a home LMS through an HTTP Get, wherein the configuration file Location Profile comprises a Location reporting strategy of the UE, and the Location reporting strategy comprises a plurality of triggering conditions for reporting Location information, such as: the terminal UE receives the configuration information reported by the location, initial registration, distance traveled, time elapsed, cell change, MBMS SAI change, MBMS session change, leaving a specific MBMS bearer service area, tracking area TA change, PLMN change, call origination or other type of event such as an emergency alert, an emergency call or an imminent danger call, etc.

S2, the LMS issues a configuration file Location Profile, wherein the configuration file Location Profile comprises the MC Service ID of the UE and the position reporting strategy.

2. Updating a reporting strategy of a terminal UE position:

the administrator updates the location reporting policy of the terminal UE, and the administrator has two ways (see below for details) to modify the location reporting policy. And after the location reporting strategy of the home LMS or OMC is modified, the location reporting strategy is issued to the terminal UE through the MCX.

s11, the strategy is modified through LMS, wherein the strategy is specific to a certain user or UE, and the strategy does not affect other users or UEs. The cancellation of the location reporting message of the terminal UE is also triggered by a cancellation procedure through configuration in the LMS.

And S12, the LMS issues a position reporting strategy change message (or reports cancellation), and after MCX checks the UE, the position reporting strategy change message is forwarded to the terminal UE. And the terminal UE judges the updated position reporting trigger condition and triggers position reporting according to the new position reporting strategy.

and S21, modifying through a background OMC, wherein the position reporting strategy can be regarded as the position reporting strategy of all the users defaulted by the MCX system, and the priority is relatively low, namely when no position reporting strategy of the user exists in the LMS or the strategy is not effective, the unified position reporting strategy of the OMC is used.

3. Reporting the position information of the terminal UE:

the process is the same as the process 3 of scenario one in the first embodiment.

And in a roaming scene, the LMS is in charge of configuration management of a position reporting strategy, and the terminal UE simultaneously reports the mechanism to the home location and the LMS of the visited place.

The method comprises the following steps:

the terminal UE passes the authentication of the unified authentication IDMS of the CSC of the home location and the visit location to acquire the access Token of the services such as CMS, MCX, LMS and the like;

Referring to fig. 9, a flow chart of location reporting policy acquisition, update and location reporting when the terminal roams, and a flow chart of a mechanism for reporting location information to a home location and a visited location at the same time by the terminal shown in fig. 1 are shown.

The process 1~3 and the process of acquiring, updating and reporting the location of the terminal location reporting policy of the home location are the same as the process 1~3 of scenario one in this embodiment, and are not described in detail again.

And after roaming handover, the terminal UE-1 moves to a visited place.

4. The terminal position reporting policy of the visited place is obtained, and the process is the same as the process 1 of the scenario one in this embodiment. Among them, there are two ways:

in the first mode, the roaming terminal directly obtains the Location reporting strategy from the Location Profile of the LMS-1 of the home Location, and the method needs to make a negotiation between the LMS of the home Location and the visited Location before the Location reporting strategy is configured and managed, so that the situation that the LMS-2 of the Location reporting strategy of the LMS-1 cannot recognize is avoided.

And in the second mode, the roaming terminal directly obtains the location information by the LMS-2 of the visited road bureau 2, and the visited LMS-2 or OMC-2 configures the location reporting strategy list of the roaming user in advance by using a pre-configuration mode.

5. And (3) reporting the strategy update of the terminal position of the visited place:

the administrator updates the location reporting policy of the terminal UE, and the administrator has two ways (see below for details) to modify the location reporting policy. And after the position reporting strategy of the visited LMS-2 or OMC-2 is modified, the modified position reporting strategy is issued to the terminal UE through the visited MCX-2.

s11, the user equipment is modified through visited LMS-2, wherein the strategy is specific to a certain user or UE and has no influence on other users or UEs. The cancellation of the location reporting message of the terminal UE is also triggered by a cancellation procedure through configuration in the visited LMS-2.

S12, the visited LMS-2 issues a position reporting strategy change message (or report cancel), and after the UE is checked by the visited MCX-2, the position reporting strategy change message is forwarded to the terminal UE. And the terminal UE judges the updated position reporting trigger condition and triggers position reporting according to the new position reporting strategy.

s21, the location reporting strategy is modified through the background visited place OMC-2, wherein the location reporting strategy can be regarded as a default location reporting strategy of all users of the MCX system, the priority is relatively low, namely when no location reporting strategy of the users exists in the visited place LMS-2 or the strategy is not effective, the unified location reporting strategy of the visited place OMC-2 is used.

S22, the visited place OMC-2 sends a position reporting strategy change message (or report cancellation) to the visited place MCX-2, the MCX-2 stores the default position reporting configuration strategy and does not need to inform to forward the strategy to the terminal UE. Note: the policy takes effect for a newly registered user, and takes effect when a registered user logs off and then registers.

6. Reporting the terminal position of the terminal UE visit place:

the process is the same as the process 6 of scenario two in the first embodiment.

7. And (3) reporting the location information of the terminal UE attribution:

in order to ensure the synchronization of the position information of the roaming terminal UE-1 in the home LMS-1 and the visited LMS-2, the roaming terminal UE-1 reports the current position information to the home LMS-1 at the same time, and the reported position information comprises the information of the measurement time, precision, longitude, latitude, speed, direction, altitude, ECGI, MBMS SAI and the like.

Preferably, the roaming terminal UE-1 adopts a dual session context mechanism, so that the location synchronization report message of the roaming terminal UE-1 can be directly reported to the location service LMS-1 through the home MCX-1 by using the home MCX-1 session context.

Scenes three to six, and the flow is correspondingly the same as the flow of scenes three to six in the first embodiment.

Although the present invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the present invention.

Claims

1. A position management method is characterized in that the management method comprises the position information report after a terminal roams from a home location to a visit location, and comprises the following steps:

the terminal acquires a terminal position reporting strategy of a visited place, wherein the terminal position reporting strategy comprises a plurality of trigger conditions;

the terminal adopts a dual-session context mechanism, and when a certain trigger condition occurs in a terminal position reporting strategy of the visited place, the terminal reports the current position information to the position service network element of the visited place through the trunking communication application network element of the visited place and synchronously reports the position information to the position service network element of the home place through the trunking communication application network element of the home place.

2. The location management method of claim 1, wherein the terminal location reporting policy is managed by a user configuration management network element.

3. The method of claim 2, wherein when the terminal is located in a home location and acquires a terminal location reporting policy of the home location, the method comprises:

the terminal acquires a location management related configuration file from a user configuration management network element of a home location, wherein the location management related configuration file comprises a terminal location reporting strategy which comprises a plurality of trigger conditions.

4. The method as claimed in claim 3, wherein the step of the terminal obtaining the terminal location reporting policy of the visited place comprises:

the terminal updates a terminal position reporting strategy from a position management related configuration file of a user configuration management network element of a home location; or

The terminal acquires a terminal position reporting strategy from a user configuration management network element of the visited place, wherein the user configuration network element of the visited place is preconfigured with the terminal position reporting strategy.

5. The location management method of claim 1, wherein the terminal location reporting policy is managed by the location service element.

6. The method of claim 5, wherein when the terminal is located in a home location and acquires a terminal location reporting policy of the home location, the method comprises:

the terminal acquires a location management related configuration file from a location service network element of a home location, wherein the location management related configuration file comprises a terminal location reporting strategy, and the terminal location reporting strategy comprises a plurality of trigger conditions.

7. The location management method according to claim 6, wherein the step of obtaining the terminal location reporting policy by the terminal at the visited location comprises:

the terminal updates the terminal position reporting strategy from the position management related configuration file of the position service network element of the home location; or

The terminal acquires a terminal position reporting strategy from a position service network element of a visited place, wherein the user configuration network element of the visited place is pre-configured with the terminal position reporting strategy.

8. The location management method according to claim 3 or 6, wherein the management method further comprises the step of reporting the location information of the terminal at the home location, comprising the following steps:

when a certain trigger condition in the terminal position reporting strategy of the home location occurs, the terminal reports the current position information to the position service network element of the home location through the trunking communication application network element of the home location.

9. The location management method according to claim 2, wherein the management method further comprises changing a terminal location reporting policy, comprising the steps of:

and changing the terminal position reporting strategy of a specific terminal through a user configuration management network element, or changing the terminal position reporting strategies of all terminals through a network management maintenance network element.

10. The location management method according to claim 5, wherein the management method further comprises changing a terminal location reporting policy, comprising the steps of:

and changing the terminal position reporting strategy of a specific terminal through a position service network element, or changing the terminal position reporting strategies of all terminals through a network management and maintenance network element.

11. The location management method according to claim 1, wherein the management method further comprises a location subscription of a first terminal to a second terminal, and if the first terminal and the second terminal belong to the same road bureau, the location subscription comprises the following steps:

when the second terminal generates a triggering condition in a terminal position reporting strategy, reporting the position information of the second terminal to a position service network element of a home location;

12. The location management method according to claim 1, wherein the management method further comprises a location subscription of a first terminal to a second terminal, and if the first terminal and the second terminal belong to different roadways, the location subscription comprises the following steps:

13. The location management method according to claim 1, wherein the management method further comprises a self-history track query of the terminal, comprising the steps of:

14. The location management method according to claim 1, wherein the management method further comprises a history track query of the first terminal to the second terminal, comprising the steps of:

15. The location management method according to claim 1, wherein the management method further comprises a current location query of a second terminal by a first terminal, and if the first terminal and the second terminal belong to the same road bureau, the current location query comprises the following steps:

16. The location management method according to claim 1, wherein the management method further comprises a current location query of a second terminal by a first terminal, and if the first terminal and the second terminal belong to different roadways, the current location query comprises the following steps:

17. The position management method according to claim 1, wherein the terminal comprises the following steps before performing information transmission via the trunking communication application network element:

18. A location management system, comprising:

the terminal is used for acquiring and storing a terminal position reporting strategy, wherein the terminal position reporting strategy comprises a plurality of triggering conditions; when a triggering condition in a terminal position reporting strategy occurs, the terminal is also used for sending position information;

the position service network element is arranged in each road office and used for receiving, storing and sending the position information sent by the trunking communication application network element;

the terminal adopts a dual-session context mechanism, when the terminal roams to a visited place from an attribution and a certain trigger condition in a terminal position reporting strategy of the visited place occurs, the terminal reports the position information to a position service network element of the visited place through a trunking communication application network element of the visited place and synchronously reports the position information to the position service network element of the attribution through the trunking communication application network element of the attribution, so that the position service network element information of the attribution and the position service network element of the visited place are synchronous.

19. The location management system according to claim 18, wherein the management system further comprises a user profile management network element, the user profile management network element is configured to manage a terminal location reporting policy.

20. The location management system of claim 18, wherein said location service network element is further configured to manage a terminal location reporting policy.