CN107548025B - Position information sharing method and core network - Google Patents
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- CN107548025B CN107548025B CN201610494335.2A CN201610494335A CN107548025B CN 107548025 B CN107548025 B CN 107548025B CN 201610494335 A CN201610494335 A CN 201610494335A CN 107548025 B CN107548025 B CN 107548025B
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Abstract
The embodiment of the invention discloses a position information sharing method, which comprises the following steps: acquiring a position sharing request for requesting a first terminal to share position information; determining a corresponding request channel and a sharing channel according to the attribute of the position sharing request; sending the position sharing request to the first terminal through the request channel; receiving the position information sent by the first terminal through the request channel; and sharing the position information to other terminals in the group through the sharing channel. The embodiment of the invention also discloses a core network.
Description
Technical Field
The present invention relates to the field of wireless communications, and in particular, to a location information sharing method and a core network.
Background
In the current society, the applications of terminals are more and more perfect, and correspondingly, the applications with positioning requirements are more and more extensive, but most of the applications are terminal application modes or software applications on the upper layer of an Internet Protocol (IP) network. The positioning function in the trunking communication network system is currently implemented in a message passing manner, and has the following disadvantages: 1) the real-time continuous positioning has long intervals, if the system requires the continuous positioning time interval to be short, or when multiple users in a group send positioning information at the same time, the problem that part of information is lost by a signaling storm exists.
Disclosure of Invention
In order to solve the above technical problem, embodiments of the present invention are intended to provide a location information sharing method and a core network, which can solve the problem that a signaling storm has lost part of messages.
The technical scheme of the invention is realized as follows:
in a first aspect, a method for sharing location information is provided, where the method includes:
acquiring a position sharing request for requesting a first terminal to share position information;
determining a corresponding request channel and a sharing channel according to the attribute of the position sharing request;
sending the position sharing request to the first terminal through the request channel;
receiving the position information sent by the first terminal through the request channel;
and sharing the position information to other terminals in the group through the sharing channel.
Optionally, the determining, according to the attribute of the location sharing request, a corresponding request channel and a corresponding sharing channel includes:
determining the service state of the group where the first terminal is located;
and determining a corresponding request channel and a corresponding shared channel according to the service state and the attribute of the position sharing information.
Optionally, when the attribute of the location sharing request is a single request, the service status includes two statuses, that is, the group is in the service or the group is not in the service, and determining the corresponding request channel and the corresponding shared channel according to the service status and the attribute of the location sharing information includes:
judging whether the first terminal has a first default connection with a core network;
if the first terminal and the core network have a first default connection, taking the first default connection as the request channel;
if the first terminal does not have the first default connection with the core network, the first default connection between the first terminal and the core network is recovered, and the first default connection is used as the request channel;
when the service state is that the group is in the service, acquiring a shared channel of the group in the service as the shared channel;
and when the service state is that the group is not in the service, restoring the default connection between each terminal in the group and the core network, and taking the default connection between each terminal and the core network as the shared channel.
Optionally, when the attribute of the location sharing request is a continuous request, determining the corresponding request channel and sharing channel according to the attribute of the location sharing request includes:
establishing a dedicated bearer for the first terminal, and establishing a shared bearer for a group in which the first terminal is located;
and taking the dedicated bearer as the request channel and the shared bearer as the shared channel.
Optionally, before sharing the location information to other terminals in the group through the shared channel, the method further includes:
receiving second position information sent by a second terminal;
integrating the second position information and the position information to obtain new position information;
the sharing the location information to other terminals in the group through the sharing channel includes:
sharing the new location information to other terminals in the group.
Optionally, the method further includes:
when the third terminal in the group is determined to have a problem, generating alarm information for prompting that the third terminal has the problem;
when the third terminal does not have a request channel or a shared channel with the core network, establishing a third default connection between the third terminal and the core network;
sending the alarm information to the third terminal through the third default connection;
and when no request channel or shared channel exists between the third terminal and the core network, sending warning information to the third terminal through the request channel or the shared channel.
In a second aspect, a core network is provided, which includes:
an acquisition unit configured to acquire a location sharing request for requesting a first terminal to share location information;
the determining unit is used for determining a corresponding request channel and a corresponding sharing channel according to the attribute of the position sharing request;
a sending unit, configured to send the location sharing request to the first terminal through the request channel;
a receiving unit, configured to receive, through the request channel, location information sent by the first terminal;
and the sharing unit is used for sharing the position information to other terminals in the group through the sharing channel.
Optionally, the determining unit is configured to:
determining the service state of the group where the first terminal is located;
and determining a corresponding request channel and a corresponding shared channel according to the service state and the attribute of the position sharing information.
Optionally, when the attribute of the location sharing request is a single request, the service state includes two states, that is, the group is in the service or the group is not in the service, and the determining unit is specifically configured to:
judging whether the first terminal has a first default connection with a core network;
if the first terminal and the core network have a first default connection, taking the first default connection as the request channel;
if the first terminal does not have the first default connection with the core network, the first default connection between the first terminal and the core network is recovered, and the first default connection is used as the request channel;
when the service state is that the group is in the service, acquiring a shared channel of the group in the service as the shared channel;
and when the service state is that the group is not in the service, restoring the default connection between each terminal in the group and the core network, and taking the default connection between each terminal and the core network as the shared channel.
Optionally, when the attribute of the location sharing request is a continuous request, the determining unit is specifically configured to:
establishing a dedicated bearer for the first terminal, and establishing a shared bearer for a group in which the first terminal is located;
and taking the dedicated bearer as the request channel and the shared bearer as the shared channel.
Optionally, the receiving unit is further configured to: receiving second position information sent by a second terminal;
the core network further comprises:
the integration unit is used for integrating the second position information and the position information to obtain new position information;
the sharing unit is further configured to: sharing the new location information to other terminals in the group.
Optionally, the core network further includes:
the generating unit is used for generating alarm information for prompting that the third terminal has problems when the third terminal in the group is determined to have problems;
a establishing unit, configured to establish a third default connection between the third terminal and the core network when there is no request channel or shared channel between the third terminal and the core network;
the sending unit is further configured to send the warning information to the third terminal through the third default connection; and when no request channel or shared channel exists between the third terminal and the core network, sending warning information to the third terminal through the request channel or the shared channel.
The embodiment provides a position information sharing method and a core network, which comprises the steps of firstly obtaining a position sharing request for requesting a first terminal to share position information; determining a corresponding request channel and a sharing channel according to the attribute of the position sharing request; then, the position sharing request is sent to the first terminal through the request channel; receiving the position information sent by the first terminal through the request channel; and sharing the position information to other terminals in the group through the sharing channel. Therefore, the position information is not sent through the information every time, and the transmitted request channel and the shared channel are determined according to the attribute of the position sharing request, so that the problem that part of information is lost due to signaling storm is solved, and the user experience is improved.
Drawings
Fig. 1 is a flowchart 1 of a location information sharing method according to an embodiment of the present invention;
fig. 2 is a flowchart 2 of a location information sharing method according to an embodiment of the present invention; .
Fig. 3 is a flowchart of a location information sharing method according to an embodiment of the present invention, which is shown in fig. 3;
fig. 4 is a flowchart of a location information sharing method according to an embodiment of the present invention 4;
fig. 5 is a schematic structural diagram 1 of a core network according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a core network according to an embodiment of the present invention, which is shown in fig. 2;
fig. 7 is a schematic structural diagram 3 of a core network according to an embodiment of the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Example one
An embodiment of the present invention provides a method for sharing location information, which is applied to a core network, and as shown in fig. 1, the method includes:
step 101, obtaining a location sharing request for requesting a first terminal to share location information.
Here, since the location sharing request may be initiated by multiple parties, for example, the present embodiment such as a certain terminal and a core network is not limited.
And 102, establishing a corresponding sharing channel and a corresponding request channel according to the attribute of the position sharing request.
Specifically, step 102 includes: determining the service state of the group where the first terminal is located; and determining a corresponding request channel and a corresponding shared channel according to the service state and the attribute of the position sharing information.
Wherein, when the attribute of the location sharing request is a single request, the service state includes two states of a group in service or a group not in service, and the determining the corresponding request channel and the shared channel according to the service state and the attribute of the location sharing information includes:
judging whether a first terminal is connected with a core network by a first default; if the first terminal and the core network have first default connection, the first default connection is used as a request channel; if the first terminal does not have the first default connection with the core network, the first default connection between the first terminal and the core network is recovered, and the first default connection is used as a request channel; when the service state is that the group is in service, acquiring a shared channel of the group in service as a shared channel; and when the service state is that the group is not in service, restoring the default connection between each terminal in the group and the core network, and taking the default connection between each terminal and the core network as a shared channel. Here, the single request corresponds to a single location sharing manner.
When the attribute of the location sharing request is a continuous request, further comprising for step 102:
establishing a dedicated bearer for a first terminal, and establishing a shared bearer for a group in which the first terminal is located; the dedicated bearer is used as a request channel, and the shared bearer is used as a shared channel. Here, the continuous request corresponds to a continuous location sharing method.
Step 103, sending the location sharing request to the first terminal through a request channel.
And 104, receiving the position information sent by the first terminal through the request channel.
And 105, sharing the position information to other terminals in the group through the sharing channel.
Further, before step 105, the method further comprises:
receiving second position information sent by a second terminal;
and integrating the second position information and the position information to obtain new position information.
Accordingly, step 105 comprises:
sharing the new location information to other terminals in the group.
Further, the method further comprises:
when the third terminal in the group is determined to have a problem, generating alarm information for prompting that the third terminal has the problem; when the request channel or the shared channel does not exist between the third terminal and the core network, establishing a third default connection between the third terminal and the core network; sending alarm information to a third terminal through a third default connection; and when the request channel or the shared channel does not exist between the third terminal and the core network, sending warning information to the third terminal through the request channel or the shared channel.
Further, if the mobile terminal is initiated by the dispatching desk, the position information data is transmitted to the dispatching desk for dynamic display. If the terminal in the dispatching desk or the group finds that the position of a certain terminal is abnormal, the alarm message of the terminal can be operated, and the indication carrying the abnormal terminal information is issued through the shared channel message.
Therefore, the position information is not sent through the information every time, and the transmitted request channel and the shared channel are determined according to the attribute of the position sharing request, so that the problem that part of information is lost due to signaling storm is solved, and the user experience is improved.
If the position sharing request is initiated by the dispatching desk, the corresponding received position information is transmitted to the dispatching desk for dynamic display. If a terminal in the dispatching desk or the group finds that the position of another terminal is abnormal, the alarm message of the other terminal can be operated, and the indication carrying the abnormal terminal information is sent through the shared channel.
The position sharing and warning system based on the group provided by the embodiment of the invention comprises the following modules: a terminal, a cluster base station, and a cluster core network (i.e., the core network described in this embodiment). In the process of the invention:
the terminal is mainly used for initiating a position sharing request of the terminal or one or more terminals in the group, responding the position sharing request of others, sending or receiving position information, checking the position information, and initiating a position alarm to the user if the position abnormality of the user is found.
The core network mainly determines the establishment mode according to the attribute of the position sharing request initiated by the terminal:
1) a single position sharing mode (corresponding to a single request) initiates a recovery default connection to a cluster base station corresponding to a terminal needing position sharing, the terminal sends position information in a message mode, if a group receiver is in service, the group receiver sends the position information to all terminals in a sharing message mode, and if the group is not in service, the recovery default connection is sent in a message mode for all terminals in the group;
2) the continuous position sharing mode (corresponding to the continuous request) initiates establishment of a dedicated bearer for sending data carrying position information to a cluster base station corresponding to a terminal needing position sharing, and establishes a shared channel for a group to transmit the data carrying position information to all users in the group. If a plurality of terminals share the position information at the same time, the core network can integrate the position information together for sending or send the position information independently, and each position information is identified by corresponding user information.
The cluster base station mainly transfers the information and data carrying the position information, and recovers the default connection transfer information or establishes corresponding special bearing transmission data for the terminal of the sender of the group position information; and recovering a default connection transmission message for a group position information receiving user, or transmitting a message of a shared channel on an established group, or establishing a shared bearing to transmit data, wherein the three modes carry the position information.
Compared with the prior art, the method solves the signaling storm problem of the conventional trunking communication system, can realize single and continuous real-time position sharing of users in the group, and realizes position alarm among the users in the group. The implementation and the method have the advantages of better real-time performance and more flexible enhancement of the interaction function, and can be popularized and applied to more scenes such as security, scheduling and the like.
In this embodiment, the first default connection, the second default connection, and the third default connection may be the same connection.
Example two
The embodiment of the invention provides a position information sharing method, which is applied to a position information sharing system. As shown in fig. 2, in this embodiment, taking the core network initiating the location sharing request as an example, the method includes:
The location sharing request carries information of the first terminal needing location sharing. In this embodiment, the implementation methods of the location sharing request of one terminal or multiple terminals are the same, and this embodiment is described by taking one terminal as an example.
And 204, if the first terminal does not have the first default connection with the core network, the core network restores the first default connection between the first terminal and the core network, and the first default connection is used as a request channel.
And step 206, the first terminal sends the position information to the core network through the request channel.
And step 208, when the service state is that the group is in service, the core network acquires the shared channel of the group in service as a shared channel.
And 209, when the service state is that the group is not in service, the core network recovers the default connection between each terminal in the group and the core network, and the default connection between each terminal and the core network is used as a shared channel.
EXAMPLE III
The embodiment of the invention provides a position information sharing method, which is applied to a position information sharing system. As shown in fig. 3, in this embodiment, taking the core network initiating the location sharing request as an example, the method includes:
The location sharing request carries information of the first terminal needing location sharing. In this embodiment, the implementation methods of the location sharing request of one terminal or multiple terminals are the same, and this embodiment is described by taking one terminal as an example.
Correspondingly, the cluster base station establishes corresponding resources.
If a plurality of terminals are positioned continuously at the same time, the core network can integrate data and divide the data into terminal marks.
Example four
In the method for sharing location information provided in this embodiment, the method may further perform an alarm, and is applied to a core network, as shown in fig. 4, the method further includes:
step 401, when the core network determines that the third terminal in the group has a problem, generating an alarm message for prompting that the third terminal has a problem.
In this embodiment, it is not limited only that the core network determines which terminal has a problem, but also that other terminals determine and send the terminal to the core network.
Step 402, when there is no request channel or shared channel between the third terminal and the core network, establishing a third default connection between the third terminal and the core network.
And step 403, sending alarm information to the third terminal through a third default connection.
And step 404, when there is no request channel or shared channel between the third terminal and the core network, sending warning information to the third terminal through the request channel or shared channel.
Example four
An embodiment of the present invention provides a core network 50, as shown in fig. 5, where the core network 50 may include:
an obtaining unit 501, configured to obtain a location sharing request for requesting a first terminal to share location information.
A determining unit 502, configured to determine a corresponding request channel and a corresponding shared channel according to the attribute of the location sharing request.
A sending unit 503, configured to send the location sharing request to the first terminal through the request channel.
A receiving unit 504, configured to receive, through the request channel, the location information sent by the first terminal.
A sharing unit 505, configured to share the location information with other terminals in the group through the shared channel.
Therefore, the position information is not sent through the information every time, and the transmitted request channel and the shared channel are determined according to the attribute of the position sharing request, so that the problem that part of information is lost due to signaling storm is solved, and the user experience is improved.
Further, the determining unit 502 is configured to:
determining the service state of the group where the first terminal is located;
and determining a corresponding request channel and a corresponding shared channel according to the service state and the attribute of the position sharing information.
Further, when the attribute of the location sharing request is a single request, the service status includes two statuses, that is, the group is in the service or the group is not in the service, and the determining unit 502 is specifically configured to:
judging whether the first terminal has a first default connection with a core network;
if the first terminal and the core network have a first default connection, taking the first default connection as the request channel;
if the first terminal does not have the first default connection with the core network, the first default connection between the first terminal and the core network is recovered, and the first default connection is used as the request channel;
when the service state is that the group is in the service, acquiring a shared channel of the group in the service as the shared channel;
and when the service state is that the group is not in the service, restoring the default connection between each terminal in the group and the core network, and taking the default connection between each terminal and the core network as the shared channel.
Further, when the attribute of the location sharing request is a continuous request, the determining unit 502 is specifically configured to:
establishing a dedicated bearer for the first terminal, and establishing a shared bearer for a group in which the first terminal is located;
and taking the dedicated bearer as the request channel and the shared bearer as the shared channel.
Further, the receiving unit 504 is further configured to: receiving second position information sent by a second terminal;
as shown in fig. 6, the core network 50 further includes:
an integrating unit 506, configured to integrate the second location information and the location information to obtain new location information;
the sharing unit 505 is further configured to: sharing the new location information to other terminals in the group.
Further, as shown in fig. 6, the core network 50 further includes:
a generating unit 507, configured to generate warning information for prompting that a problem exists in a third terminal when it is determined that the third terminal in the group has a problem;
an establishing unit 508, configured to establish a third default connection between the third terminal and the core network when there is no request channel or shared channel between the third terminal and the core network;
the sending unit 509 is further configured to send the warning information to the third terminal through the third default connection; and when no request channel or shared channel exists between the third terminal and the core network, sending warning information to the third terminal through the request channel or the shared channel.
EXAMPLE five
An embodiment of the present invention provides a core network 60, as shown in fig. 7, where the core network 60 may include:
the processor 601 is configured to obtain a location sharing request for requesting the first terminal to share location information, and determine a corresponding request channel and a corresponding shared channel according to an attribute of the location sharing request.
A receiver 602, configured to receive, through the request channel, the location information sent by the first terminal.
A transmitter 603, configured to send the location sharing request to the first terminal through the request channel; and sharing the position information to other terminals in the group through the sharing channel.
Therefore, the position information is not sent through the information every time, and the transmitted request channel and the shared channel are determined according to the attribute of the position sharing request, so that the problem that part of information is lost due to signaling storm is solved, and the user experience is improved.
Further, the processor 601 is configured to:
determining the service state of the group where the first terminal is located;
and determining a corresponding request channel and a corresponding shared channel according to the service state and the attribute of the position sharing information.
Further, when the attribute of the location sharing request is a single request, the service status includes two statuses, that is, the group is in the service or the group is not in the service, and the processor 601 is specifically configured to:
judging whether the first terminal has a first default connection with a core network;
if the first terminal and the core network have a first default connection, taking the first default connection as the request channel;
if the first terminal does not have the first default connection with the core network, the first default connection between the first terminal and the core network is recovered, and the first default connection is used as the request channel;
when the service state is that the group is in the service, acquiring a shared channel of the group in the service as the shared channel;
and when the service state is that the group is not in the service, restoring the default connection between each terminal in the group and the core network, and taking the default connection between each terminal and the core network as the shared channel.
Further, when the attribute of the location sharing request is a continuous request, the processor 602 is specifically configured to:
establishing a dedicated bearer for the first terminal, and establishing a shared bearer for a group in which the first terminal is located;
and taking the dedicated bearer as the request channel and the shared bearer as the shared channel.
Further, the receiver 602 is further configured to: receiving second position information sent by a second terminal; sharing the new location information to other terminals in the group.
The processor 601 is further configured to: and integrating the second position information and the position information to obtain new position information.
The processor 601 is further configured to: the warning information is used for prompting that the third terminal has a problem when the third terminal in the group is determined to have the problem; when the third terminal does not have a request channel or a shared channel with the core network, establishing a third default connection between the third terminal and the core network;
the transmitter 603 is further configured to send the warning information to the third terminal through the third default connection; and when no request channel or shared channel exists between the third terminal and the core network, sending warning information to the third terminal through the request channel or the shared channel.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (12)
1. A method for sharing location information, the method comprising:
acquiring a position sharing request for requesting a first terminal to share position information;
determining a corresponding request channel and a sharing channel according to the attribute of the position sharing request;
sending the position sharing request to the first terminal through the request channel;
receiving the position information sent by the first terminal through the request channel;
and sharing the position information to other terminals in the group where the first terminal is located through the sharing channel.
2. The method of claim 1, wherein determining the corresponding request channel and sharing channel according to the attribute of the location sharing request comprises:
determining the service state of the group where the first terminal is located;
and determining a corresponding request channel and a corresponding shared channel according to the service state and the attribute of the position sharing request.
3. The method of claim 2, wherein when the attribute of the location sharing request is a single request, the traffic status comprises two statuses of the group being in the traffic or the group not being in the traffic, and wherein determining the corresponding request channel and shared channel according to the traffic status and the attribute of the location sharing request comprises:
judging whether the first terminal has a first default connection with a core network;
if the first terminal and the core network have a first default connection, taking the first default connection as the request channel;
if the first terminal does not have the first default connection with the core network, the first default connection between the first terminal and the core network is recovered, and the first default connection is used as the request channel;
when the service state is that the group is in the service, acquiring a shared channel of the group in the service as the shared channel;
and when the service state is that the group is not in the service, restoring the default connection between each terminal in the group and the core network, and taking the default connection between each terminal and the core network as the shared channel.
4. The method of claim 1, wherein when the attribute of the location sharing request is a continuous request, the determining the corresponding request channel and sharing channel according to the attribute of the location sharing request comprises:
establishing a dedicated bearer for the first terminal, and establishing a shared bearer for a group in which the first terminal is located;
and taking the dedicated bearer as the request channel and the shared bearer as the shared channel.
5. The method according to any one of claims 1 to 4, wherein before sharing the location information to other terminals in the group in which the first terminal is located through the shared channel, the method further comprises:
receiving second position information sent by a second terminal;
integrating the second position information and the position information to obtain new position information;
the sharing the location information to other terminals in the group through the sharing channel includes:
sharing the new location information to other terminals in the group.
6. The method of claim 3, further comprising:
when the third terminal in the group is determined to have a problem, generating alarm information for prompting that the third terminal has the problem;
when the third terminal does not have a request channel or a shared channel with the core network, establishing a third default connection between the third terminal and the core network;
sending the alarm information to the third terminal through the third default connection;
and when a request channel or a shared channel exists between the third terminal and the core network, sending warning information to the third terminal through the request channel or the shared channel.
7. A core network, characterized in that the core network comprises:
an acquisition unit configured to acquire a location sharing request for requesting a first terminal to share location information;
the determining unit is used for determining a corresponding request channel and a corresponding sharing channel according to the attribute of the position sharing request;
a sending unit, configured to send the location sharing request to the first terminal through the request channel;
a receiving unit, configured to receive, through the request channel, location information sent by the first terminal;
and the sharing unit is used for sharing the position information to other terminals in the group where the first terminal is located through the sharing channel.
8. The core network of claim 7, wherein the determining unit is configured to:
determining the service state of the group where the first terminal is located;
and determining a corresponding request channel and a corresponding shared channel according to the service state and the attribute of the position sharing request.
9. The core network according to claim 8, wherein when the attribute of the location sharing request is a single request, the service status includes two statuses, that the group is in the service or that the group is not in the service, and the determining unit is specifically configured to:
judging whether the first terminal has a first default connection with a core network;
if the first terminal and the core network have a first default connection, taking the first default connection as the request channel;
if the first terminal does not have the first default connection with the core network, the first default connection between the first terminal and the core network is recovered, and the first default connection is used as the request channel;
when the service state is that the group is in the service, acquiring a shared channel of the group in the service as the shared channel;
and when the service state is that the group is not in the service, restoring the default connection between each terminal in the group and the core network, and taking the default connection between each terminal and the core network as the shared channel.
10. The core network according to claim 7, wherein when the attribute of the location sharing request is a continuous request, the determining unit is specifically configured to:
establishing a dedicated bearer for the first terminal, and establishing a shared bearer for a group in which the first terminal is located;
and taking the dedicated bearer as the request channel and the shared bearer as the shared channel.
11. Core network according to any of claims 7 to 10, wherein the receiving unit is further configured to: receiving second position information sent by a second terminal;
the core network further comprises:
the integration unit is used for integrating the second position information and the position information to obtain new position information;
the sharing unit is further configured to: sharing the new location information to other terminals in the group.
12. The core network of claim 9, wherein the core network further comprises:
the generating unit is used for generating alarm information for prompting that the third terminal has problems when the third terminal in the group is determined to have problems;
a establishing unit, configured to establish a third default connection between the third terminal and the core network when there is no request channel or shared channel between the third terminal and the core network; the sending unit is further configured to send the warning information to the third terminal through the third default connection; and when a request channel or a shared channel exists between the third terminal and the core network, sending warning information to the third terminal through the request channel or the shared channel.
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