CN108347342B - Method for recovering service after TMF network element restart and network element - Google Patents

Method for recovering service after TMF network element restart and network element Download PDF

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Publication number
CN108347342B
CN108347342B CN201710060423.6A CN201710060423A CN108347342B CN 108347342 B CN108347342 B CN 108347342B CN 201710060423 A CN201710060423 A CN 201710060423A CN 108347342 B CN108347342 B CN 108347342B
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network element
tmf
restarted
call service
tcf
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CN108347342A (en
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万开
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Potevio Information Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/50—Queue scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/10—Current supply arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/06—Management of faults, events, alarms or notifications
    • H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0803—Configuration setting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/76—Admission control; Resource allocation using dynamic resource allocation, e.g. in-call renegotiation requested by the user or requested by the network in response to changing network conditions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/55—Prevention, detection or correction of errors
    • H04L49/557—Error correction, e.g. fault recovery or fault tolerance

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

The embodiment of the invention discloses a method for recovering service after a TMF network element is restarted and a network element. The method comprises the following steps: when a call service is established, a cluster control function (TCF) network element acquires cluster media function (TMF) network element information for performing the call service and service information of the call service; if the TCF network element knows that the TMF network element is restarted or switched in a preset mode during the call service, a reestablishment instruction is sent to the TMF network element according to the service information so that the TMF network element reestablishes the call service; wherein, the preset mode comprises: a heartbeat mechanism, or a message that the TMF network element is restarted or switched is sent to the TCF network element after the TMF network element is restarted or switched is received. The network element is used for implementing the method. The method for recovering the service after the TMF network element is restarted can realize the function of recovering the call service after the TMF network element is restarted.

Description

Method for recovering service after TMF network element restart and network element
Technical Field
The present invention relates to the field of network communication, and in particular, to a method for recovering a service after a TMF (Trunking Media Function) network element is restarted and a network element.
Background
The B-trunC broadband trunking system is a broadband trunking system developed for meeting the demand of user command scheduling in a specific industry based on the TD-LTE technology. It has higher speed and larger bandwidth, and is a multipurpose and high-performance wireless communication system.
In recent years, broadband cluster systems have been widely used in government departments, public safety, emergency communication, electric power, civil aviation, petrochemical industry, military and other fields.
The schematic structure of the broadband cluster system is shown in fig. 1.
Wherein, a TCF (Trunking Control Function) network element (not shown) is responsible for scheduling and managing the Trunking service in the Trunking core network, and its main functions are as follows:
multimedia cluster service scheduling including voice, video and data is supported;
authentication and authorization, registration and cancellation of the cluster service;
establishing and releasing a cluster call;
managing the speaking right;
and subscribing and updating cluster group information.
The TMF network element (not shown) is responsible for data transmission of trunking services in the trunking core network, and its main functions are as follows:
managing a cluster user plane;
routing and forwarding cluster service data;
copying and distributing cluster service data;
and (5) performing media coding and decoding conversion on the cluster service.
In the existing broadband trunking system, when a TMF network element is restarted/switched, the call service in a steady state is interrupted, and a user in a call state can only find that the call has no response. This may result in a reduced user experience.
Therefore, how to provide a method can recover the call service after the TMF network element is restarted, so that the call service in a steady state is continuously carried out, thereby avoiding the user from perceiving the call abnormality, and having very important significance.
Disclosure of Invention
Aiming at the defects in the prior art, the embodiment of the invention provides a method for recovering service after a TMF network element is restarted and a network element.
On one hand, an embodiment of the present invention provides a method for recovering a service after a TMF network element is restarted, including:
when a call service is established, a cluster control function (TCF) network element acquires cluster media function (TMF) network element information for performing the call service and service information of the call service;
if the TCF network element knows that the TMF network element is restarted or switched in a preset mode during the call service, a reestablishment instruction is sent to the TMF network element according to the service information so that the TMF network element reestablishes the call service;
wherein, the preset mode comprises:
the heart beat mechanism, or
And receiving a message that the TMF network element is restarted or switched and sent to the TCF network element after the TMF network element is restarted or switched.
In the method for recovering the service after the TMF is restarted, the TCF network element may know that the TMF network element is restarted or switched, and correspondingly send the reestablishment instruction to the TMF network element, so that the TMF network element reestablishes the call service, and therefore, the function of recovering the call service after the TMF network element is restarted may be implemented.
On the other hand, an embodiment of the present invention further provides a method for recovering a service after a TMF network element is restarted, including:
if the cluster media function TMF network element is restarted or switched during the call service, after the TMF network element is restarted or switched, the message that the TMF network element is restarted or switched is sent to a cluster control function TCF network element, or a heartbeat mechanism is used, so that the TCF network element knows that the TMF network element is restarted or switched;
and if the TMF network element receives a reconstruction instruction sent by the TCF network element after the TCF network element knows that the TMF network element is restarted or switched, reconstructing the call service according to the reconstruction instruction.
The method for recovering the service after the TMF network element is restarted, provided by the embodiment of the invention, can enable the TCF network element to know that the TMF network element is restarted or switched, and rebuild the call service according to the rebuilding instruction of the TCF network element, so that the function of recovering the call service after the TMF network element is restarted can be realized.
In another aspect, an embodiment of the present invention further provides a TCF network element, including:
the system comprises an acquisition module, a service processing module and a service processing module, wherein the acquisition module is used for acquiring cluster media function (TMF) network element information for carrying out a call service and service information of the call service when the call service is established;
the instruction module is used for sending a reestablishment instruction to the TMF network element according to the service information after the TMF network element is restarted or switched in a preset mode during the call service, so that the TMF network element reestablishes the call service;
wherein, the preset mode comprises:
the heart beat mechanism, or
And receiving a message that the TMF network element is restarted or switched and sent to the instruction module after the TMF network element is restarted or switched.
The TCF network element provided in the embodiment of the present invention can know that the TMF network element is restarted or switched, and accordingly send the reestablishment instruction to the TMF network element, so that the TMF network element reestablishes the call service, thereby implementing the function of recovering the call service after the TMF network element is restarted.
In another aspect, an embodiment of the present invention further provides a TMF network element, including:
a sending module, configured to send, if a TMF network element of a trunking media function is restarted or switched during a call service, a message that the TMF network element is restarted or switched to a TCF network element of a trunking control function after the TMF network element is restarted or switched, or through a heartbeat mechanism, so that the TCF network element learns that the TMF network element is restarted or switched;
and the reestablishing module is configured to reestablish the call service according to the reestablishing instruction if the TCF network element receives the reestablishing instruction sent by the TCF network element after the TCF network element learns that the TMF network element is restarted or switched.
The TMF network element provided in the embodiment of the present invention can enable the TCF network element to know that the TMF network element is restarted or switched, and rebuild the call service according to the rebuild instruction of the TCF network element, so that the function of recovering the call service after the TMF network element is restarted can be implemented.
Drawings
FIG. 1 is a schematic structural diagram of a B-trunC broadband trunking system;
fig. 2 is a flowchart illustrating an embodiment of a method for recovering a service after a TMF network element is restarted according to the present invention;
fig. 3 is a flowchart illustrating an embodiment of a method for recovering a service after a TMF network element is restarted according to the present invention;
fig. 4 is a schematic structural diagram of a TCF network element according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an embodiment of a TMF network element 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 described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments, but not all embodiments, of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 2 is a schematic flow diagram of an embodiment of a method for recovering a service after a TMF network element is restarted, and referring to fig. 2, the embodiment discloses a method for recovering a service after a TMF network element is restarted, including:
s1, when the call service is established, the cluster control function TCF network element obtains the cluster media function TMF network element information for the call service and the service information of the call service;
s2, if the TCF network element learns that the TMF network element is restarted or switched in a preset manner during the call service, sending a reestablishment instruction to the TMF network element according to the service information, so that the TMF network element reestablishes the call service;
wherein, the preset mode comprises:
the heart beat mechanism, or
And receiving a message that the TMF network element is restarted or switched and sent to the TCF network element after the TMF network element is restarted or switched.
In the method for recovering the service after the TMF is restarted, the TCF network element may know that the TMF network element is restarted or switched, and correspondingly send the reestablishment instruction to the TMF network element, so that the TMF network element reestablishes the call service, and therefore, the function of recovering the call service after the TMF network element is restarted may be implemented.
It should be noted that the TMF network element and the TCF network element exist in a core network of the broadband trunking system.
When a call service is established, a plurality of TMF network elements are generally adapted to perform the call service in step S1. Therefore, the TCF network element needs to acquire TMF network element information for performing the call service and service information of the call service, and store the information, thereby determining a correspondence between the call service and the TMF network element for performing the call service.
The service information includes:
caller IP, callee IP, port information, call type, and media information.
In step S2, if the TMF network element is restarted or switched during the call service, the TMF network element may pass through a heartbeat mechanism, or after the TMF network element is restarted, send a message that the TMF network element is restarted or switched to the TCF network element, so that the TCF network element knows that the TMF network element is restarted or switched.
After learning that the TMF network element is restarted or switched, the TCF network element sends a reestablishment instruction to the TMF network element according to the stored service information, so that the TMF network element reestablishes the call service that needs to be performed when the TMF network element is restarted or switched.
If the call service is successfully reestablished after the TMF network element receives the reestablishment instruction, the process is ended.
And if the call service cannot be successfully reconstructed after the TMF network element receives the reconstruction instruction, sending a message that the reconstruction of the call service fails to the TCF network element.
If the TCF network element receives the message which is sent by the TMF network element and fails in reestablishing the call service, a service release process is initiated to the terminal of the corresponding call service, and then the process is ended.
According to the method for recovering the service after the TMF network element is restarted, the call service can still be continuously carried out after the TMF network element is restarted or switched, so that the condition that a user senses that the service is abnormal is avoided, the use experience of the user is improved, and the fault-tolerant capability of the cluster core network is further improved.
Fig. 3 is a schematic flowchart of an embodiment of a method for recovering a service after a TMF network element is restarted, and referring to fig. 3, the embodiment discloses a method for recovering a service after a TMF network element is restarted, including:
s31, if the cluster media function TMF network element is restarted or switched during the call service, and after the TMF network element is restarted or switched, the TMF network element sends a message that the TMF network element is restarted or switched to a cluster control function TCF network element, or a heartbeat mechanism is used, so that the TCF network element knows that the TMF network element is restarted or switched;
s32, if the TMF network element receives the reestablishment instruction sent by the TCF network element after the TCF network element knows that the TMF network element is restarted or switched, reestablishing the call service according to the reestablishment instruction.
The method for recovering the service after the TMF network element is restarted, provided by the embodiment of the invention, can enable the TCF network element to know that the TMF network element is restarted or switched, and rebuild the call service according to the rebuilding instruction of the TCF network element, so that the function of recovering the call service after the TMF network element is restarted can be realized.
It should be noted that the TMF network element and the TCF network element exist in a core network of the broadband trunking system.
Specifically, in step S31, after learning that the TMF network element is restarted or switched, the TCF network element sends a reestablishment instruction to the TMF network element according to the service information of the call service stored in the TCF network element, so as to instruct the TMF network element to reestablish the call service.
In step S32, if the TMF network element successfully reconstructs the call service according to the reconstruction instruction after receiving the reconstruction instruction sent by the TCF network element, the process ends.
If the call service cannot be successfully reestablished according to the reestablishment instruction after the TMF network element receives the reestablishment instruction sent by the TCF network element, the TMF network element sends a message that the reestablishment of the call service fails to the TCF network element, so that the TCF network element initiates a service release process to a terminal of the corresponding call service.
According to the method for recovering the service after the TMF network element is restarted, the call service can still be continuously carried out after the TMF network element is restarted or switched, so that the condition that a user senses that the service is abnormal is avoided, the use experience of the user is improved, and the fault-tolerant capability of the cluster core network is further improved.
Fig. 4 is a schematic structural diagram of an embodiment of a TCF network element according to the present invention, and referring to fig. 4, the embodiment further discloses a TCF network element, which includes an obtaining module 1 and an instruction module 2;
the acquiring module 1 is configured to acquire, when a call service is established, cluster media function TMF network element information for performing the call service and service information of the call service;
the instruction module 2 is configured to, during the call service, after knowing, in a preset manner, that the TMF network element is restarted or switched, send a reestablishment instruction to the TMF network element according to the service information, so that the TMF network element reestablishes the call service;
wherein, the preset mode comprises:
the heart beat mechanism, or
And receiving a message that the TMF network element is restarted or switched and sent to the instruction module after the TMF network element is restarted or switched.
The TCF network element provided in the embodiment of the present invention can know that the TMF network element is restarted or switched, and accordingly send the reestablishment instruction to the TMF network element, so that the TMF network element reestablishes the call service, thereby implementing the function of recovering the call service after the TMF network element is restarted.
It should be noted that when a call service is established, a plurality of TMF network elements are usually adapted to perform the call service. Therefore, the obtaining module 1 needs to obtain the TMF network element information for performing the call service and the service information of the call service, and store these pieces of information, so as to determine the corresponding relationship between the call service and the TMF network element for performing the call service.
The service information includes:
caller IP, callee IP, port information, call type, and media information.
If the TMF network element is restarted or switched during the call service, the TMF network element may pass through a heartbeat mechanism, or after the TMF network element is restarted, send a message that the TMF network element is restarted or switched to the instruction module 2, so that the instruction module 2 knows that the TMF network element is restarted or switched.
After learning that the TMF network element is restarted or switched, the instruction module 2 sends a reestablishment instruction to the TMF network element according to the stored service information, so that the TMF network element reestablishes the call service that needs to be performed when the TMF network element is restarted or switched.
If the call service is successfully reestablished after the TMF network element receives the reestablishment instruction, the process is ended.
Further, the TCF network element further includes a release module (not shown in the figure).
If the call service cannot be successfully reestablished after the TMF network element receives the reestablishment instruction, a message that the reestablishment of the call service fails is sent to the release module.
And if the release module receives the message which is sent by the TMF network element and fails in reestablishing the call service, initiating a service release flow to a terminal of the corresponding call service, and then ending the flow.
The TCF network element provided by the embodiment of the invention can still enable the call service to continue after the TMF network element is restarted or switched, thereby avoiding the condition that a user perceives that the service is abnormal, improving the use experience of the user and further improving the fault-tolerant capability of the cluster core network.
Fig. 5 is a schematic structural diagram of an embodiment of a TMF network element according to the present invention, and referring to fig. 5, the embodiment further discloses a TMF network element, which includes a sending module 51 and a rebuilding module 52;
the sending module 51 is configured to send a message that a cluster media function TMF network element is restarted or switched to a cluster control function TCF network element after the TMF network element is restarted or switched, or through a heartbeat mechanism, so that the TCF network element knows that the TMF network element is restarted or switched;
the reestablishment module 52 is configured to reestablish the call service according to the reestablishment instruction if the TCF network element receives the reestablishment instruction sent by the TCF network element after knowing that the TMF network element is restarted or switched.
The TMF network element provided in the embodiment of the present invention can enable the TCF network element to know that the TMF network element is restarted or switched, and rebuild the call service according to the rebuild instruction of the TCF network element, so that the function of recovering the call service after the TMF network element is restarted can be implemented.
Specifically, after learning that the TMF network element is restarted or switched, the TCF network element sends a reestablishment instruction to the reestablishment module 52 according to the service information of the call service stored in the TCF network element, so as to instruct the reestablishment module 52 to reestablish the call service.
If the reestablishment module 52 successfully reestablishes the call service according to the reestablishment instruction after receiving the reestablishment instruction sent by the TCF network element, the process is ended.
Further, the TMF network element further comprises a notification module (not shown in the figure).
If the reestablishment module 52 fails to reestablish the call service according to the reestablishment instruction after receiving the reestablishment instruction sent by the TCF network element, the notification module sends a message that the reestablishment of the call service fails to the TCF network element, so that the TCF network element initiates a service release process to the terminal of the corresponding call service.
In the TMF network element provided in the embodiment of the present invention, since the call service can still be continuously performed after the TMF network element is restarted or switched, the situation that the user perceives that the service is abnormal is avoided, the user experience is improved, and the fault-tolerant capability of the cluster core network is further improved.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (8)

1. A method for recovering service after TMF network element restart is characterized by comprising the following steps:
when a call service is established, a cluster control function (TCF) network element acquires cluster media function (TMF) network element information for performing the call service and service information of the call service;
if the TCF network element knows that the TMF network element is restarted or switched in a preset mode during the call service, a reestablishment instruction is sent to the TMF network element according to the service information so that the TMF network element reestablishes the call service;
wherein, the preset mode comprises:
the heart beat mechanism, or
Receiving a message that the TMF network element is restarted or switched and sent to the TCF network element after the TMF network element is restarted or switched;
the TMF network element and the TCF network element are positioned in a core network of a broadband trunking system;
the service information includes:
caller IP, callee IP, port information, call type, and media information.
2. The method of claim 1, further comprising:
and if the TCF network element receives the message which is sent by the TMF network element and fails in reestablishing the call service, initiating a service release process to a terminal of the corresponding call service.
3. A method for recovering service after TMF network element restart is characterized by comprising the following steps:
if the cluster media function TMF network element is restarted or switched during the call service, after the TMF network element is restarted or switched, the message that the TMF network element is restarted or switched is sent to a cluster control function TCF network element, or a heartbeat mechanism is used, so that the TCF network element knows that the TMF network element is restarted or switched;
if the TMF network element receives a reconstruction instruction sent by the TCF network element after the TCF network element knows that the TMF network element is restarted or switched, reconstructing the call service according to the reconstruction instruction;
the TMF network element and the TCF network element are located in a core network of a broadband trunking system.
4. The method of claim 3, further comprising:
and if the call service is failed to be reestablished, the TMF network element sends a message that the call service is failed to be reestablished to the TCF network element.
5. A cluster control function TCF network element in a core network of a broadband cluster system, comprising:
the system comprises an acquisition module, a service processing module and a service processing module, wherein the acquisition module is used for acquiring cluster media function (TMF) network element information for carrying out a call service and service information of the call service when the call service is established;
the instruction module is used for sending a reestablishment instruction to the TMF network element according to the service information after the TMF network element is restarted or switched in a preset mode during the call service, so that the TMF network element reestablishes the call service;
wherein, the preset mode comprises:
the heart beat mechanism, or
Receiving a message that the TMF network element is restarted or switched and sent to the instruction module after the TMF network element is restarted or switched;
the TMF network element is positioned in a core network of the broadband trunking system;
the service information includes:
caller IP, callee IP, port information, call type, and media information.
6. The network element of claim 5, further comprising:
and the release module is used for initiating a service release flow to a terminal of the corresponding call service after receiving the message which is sent by the TMF network element and fails to reestablish the call service.
7. A TMF network element for a trunking media function in a core network of a broadband trunking system, comprising:
a sending module, configured to send, if a TMF network element of a trunking media function is restarted or switched during a call service, a message that the TMF network element is restarted or switched to a TCF network element of a trunking control function after the TMF network element is restarted or switched, or through a heartbeat mechanism, so that the TCF network element learns that the TMF network element is restarted or switched;
a reestablishing module, configured to reestablish the call service according to a reestablishing instruction if a reestablishing instruction sent by the TCF network element is received after the TCF network element learns that the TMF network element is restarted or switched;
wherein the TCF network element is located in a core network of the broadband trunking system.
8. The network element of claim 7, further comprising:
and the notification module is used for sending a message of failure in reestablishing the call service to the TCF network element after the failure in reestablishing the call service.
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