CN109995765A - A kind of dual-homed register method of IMS network AGCF - Google Patents
A kind of dual-homed register method of IMS network AGCF Download PDFInfo
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- CN109995765A CN109995765A CN201910181707.XA CN201910181707A CN109995765A CN 109995765 A CN109995765 A CN 109995765A CN 201910181707 A CN201910181707 A CN 201910181707A CN 109995765 A CN109995765 A CN 109995765A
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- 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
- H04L41/0663—Performing the actions predefined by failover planning, e.g. switching to standby network elements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/1016—IP multimedia subsystem [IMS]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1073—Registration or de-registration
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/04—Arrangements for maintaining operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
- H04W60/005—Multiple registrations, e.g. multihoming
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/28—Routing or path finding of packets in data switching networks using route fault recovery
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- Computer Networks & Wireless Communication (AREA)
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Abstract
The invention discloses a kind of dual-homed register methods of IMS network AGCF, belong to next generation network communication technical field.The present invention utilizes the IMS core network element device I/S-CSCF of long-distance disaster mechanism deployment, increase the dual-homed registering functional of AGCF, when the I/S-CSCF of AGCF institute subordinate breaks down, can follow-up business function and service normally be provided for subordinate's access device and user, substantially increase the stability and reliability of AGCF network element, effectively enhancing IMS system disaster tolerance, significantly reduces the mean down time of IMS system.
Description
Technical field
The present invention relates to next generation network communication technical fields, particularly relate to a kind of dual-homed registration side IMS network AGCF
Method.
Background technique
IMS(IP Multimedia Subsystem, IP multimedia subsystem) be 3GPP(third generation partner program)
It is proposed in R5 version.IMS defined in 3GPP is by offer IP multimedia service (such as voice, video, text, chat
Deng) framework constituted in the online core network element of packet data, can satisfy that present client is more novel, more diversified more matchmakers
Body business demand.IMS system includes three functional planes: access layer, core layer and operation layer.Access layer is by various access networks
It is aggregated into IMS core net, completes the intercommunication to existing network and completes the control to carrying, the nets such as including MGW, AG/IAD
Member；Core layer completes the core functions such as Call- Control1, safety management, business triggering, resources control, network interworking, including S/I/
The network elements such as P-CSCF, MRFC, HSS, AGCF, MGCF, BGCF；Operation layer provides various value-added services and realizes, including all kinds of AS nets
Member.AGCF(Access Gateway Control Function, access gateway controller) it is first of AG/IAD connection
Point, AGCF provide PSTN/ISDN artificial service as control Media Gateway entity for traditional analog user/domestic consumer；Simultaneously
AGCF is interacted with the I/S CSCF network element in IMS, completes the intercommunication of AG/IAD user and IMS network.
In actual network construction, it is steady to improve equipment operation that the software and hardware component inside equipment all uses back mechanism
It is qualitative.In network element rank, IMS core equipment often uses strange land distributed deployment and remote backup mechanism, and (frequently referred to strange land holds
Calamity mechanism).When I-CSCF breaks down or when S-CSCF breaks down, the I-CSCF or S-CSCF of strange land deployment are intact, IMS
Core net can work normally.But if I-CSCF breaks down, AGCF can not initiate IMS registration for subordinate's access device user.
If S-CSCF breaks down, AGCF can not initiate IMS calling for subordinate's access device user.
Summary of the invention
In view of this, the present invention proposes a kind of dual-homed register method of IMS network AGCF, this method utilizes long-distance disaster machine
The IMS core network element device I/S-CSCF for making deployment, increases the dual-homed registering functional of AGCF, as the I/S- of AGCF institute subordinate
When CSCF breaks down, follow-up business function and service normally can be provided for subordinate's access device and user, improve AGCF
The stability and reliability of network element, effectively reduce the mean down time of IMS system.
To achieve the goals above, the technical solution adopted by the present invention is that:
A kind of dual-homed register method of IMS network AGCF comprising following steps:
S1: primary I-CSCF information and spare I-CSCF information are configured in AGCF system；The primary I-CSCF information and standby
It include the domain name and IP address of I-CSCF with I-CSCF information；
When S2:AGCF system initialization, AGCF system configuration is read, establishes the heartbeat connection of AGCF to I-CSCF；And in memory
The middle dynamic routing table for establishing the address S-CSCF establishes the heartbeat connection of AGCF to S-CSCF；The dynamic routing table is by Hash
Table is realized；
S3:AGCF system subordinate terminal user initiates to register to AGCF system, and after succeeding in registration, AGCF system is according to AGCF system
Subordinate terminal user's virtual map is the standard terminal IMS by configuration；
S4:AGCF system initiates IMS registration to I-CSCF for its subordinate terminal user；
S5:AGCF system receives subordinate terminal user after the response of succeeding in registration of IMS system, extracts the S- in response
The address CSCF is simultaneously updated to dynamic routing table；
S6:AGCF system periodic test S-CSCF dynamic routing table, checks whether the newly-increased address S-CSCF, if newly-increased, builds
The heartbeat connection of vertical AGCF to S-CSCF；
S7:AGCF systems stay detection AGCF is connect with the heartbeat of I-CSCF, AGCF and S-CSCF；If the heart of AGCF and I-CSCF
It jumps connection to disconnect, thens follow the steps S8~S9；It is disconnected if the heartbeat of AGCF and S-CSCF connects, thens follow the steps S10；
S8: if AGCF connect disconnection with primary I-CSCF heartbeat, and AGCF connect intact with spare I-CSCF heartbeat, then marks master
It is malfunctioning node with I-CSCF, and after expiring the life cycle of subordinate's end-user registration to S-CSCF, drives subordinate terminal
User sends initial registration to spare I-CSCF, completes the equipment attachment of user to new available S-CSCF；If AGCF with it is spare
I-CSCF heartbeat connection disconnects, then skips this step；
S9:AGCF continues detection failure node, connect recovery with the heartbeat of primary I-CSCF if detecting AGCF, marks the master
It is available with I-CSCF node, and user is driven to send initial registration to primary I-CSCF；If detecting AGCF and spare I-CSCF
Heartbeat connect and restore, then only mark the spare I-CSCF node available；
S10: the S-CSCF that label heartbeat connection disconnects is malfunctioning node, and AGCF drives all subordinaties being registered under the S-CSCF
Terminal user re-registers to spare S-CSCF initiation, completes the equipment attachment of user to new available S-CSCF, and update dynamic
State routing table.
Specifically, establishing the specific steps of heartbeat connection in the step S2 are as follows:
S201:AGCF system starts cycle timer, according to AGCF system configuration and dynamic routing table to I-CSCF or S-CSCF
Send heartbeat detection request；The heartbeat detection request is the OPTIONS message in Session Initiation Protocol；
After S202:I-CSCF or S-CSCF receives heartbeat detection request, OPTIONGS response is sent to AGCF；
S203:AGCF is to all infomation detection type of messages received, if the information received super message when being timer,
Check whether receive OPTIONS response, if received, mark corresponding I-CSCF or S-CSCF be it is available, otherwise, mark
Remember that corresponding I-CSCF or S-CSCF is failure；If the information received be OPTIONS response, mark corresponding I-CSCF or
S-CSCF is available.
Specifically, updating dynamic routing table in the step S5, specific step is as follows:
S501:AGCF systems inspection registration response, if succeed in registration response, execute step S502, if nullify success response,
Then follow the steps S503；
S502: check that the address of S-CSCF in response whether there is in dynamic routing table, and if it exists, then update S-CSCF letter
Breath；If it does not exist, then increase newly S-CSCF information, and establish the address S-CSCF to S-CSCF information Hash table；The S-CSCF
Information includes the address S-CSCF, registration terminal number and registration terminal information；
S503: S-CSCF information is obtained by dynamic routing table, the information of counterpart terminal is removed from S-CSCF information, and makes end
End registration number subtracts 1；Then check registration terminal number whether be 0, if 0, then by Hash table index and S-CSCF information it is clear
It removes.
Specifically, the AGCF subordinate terminal user is IAD or access gateway based on H248 agreement.
Beneficial effect by adopting the above technical scheme is:
The present invention utilizes the long-distance disaster mechanism of IMS system, increases the dual-homed registering functional of AGCF, solves core network element I/S-
When CSCF failure, IMS core system be can be used, but the problem of AGCF can not work normally, substantially increase the steady of AGCF network element
Qualitative and reliability effectively enhances the disaster tolerance of IMS system, significantly reduces the mean down time of IMS system.
Detailed description of the invention
Fig. 1 is the timing diagram that user initiates IMS registration by AGCF to I-CSCF under AG.
Fig. 2 is the deployment catenation principle figure of the dual-homed registration of AGCF in the embodiment of the present invention.
When Fig. 3 is primary I-CSCF failure in the embodiment of the present invention under AGCF equipment user registration schematic diagram.
Fig. 4 is the registration schematic diagram that AGCF divides into spare user when S-CSCF breaks down in the embodiment of the present invention.
In above each figure, chain-dotted line indicates heartbeat connection, and "×" indicates that connection disconnects, and dotted line with the arrow indicates that registration disappears
Breath flow direction.
Specific implementation method
With reference to the accompanying drawing and embodiment the present invention will be described in detail.
A kind of dual-homed register method of IMS network AGCF comprising following steps:
S1: primary I-CSCF information and spare I-CSCF information are configured in AGCF system；The primary I-CSCF information and standby
It include the domain name and IP address of I-CSCF with I-CSCF information；
When S2:AGCF system initialization, AGCF system configuration is read, establishes the heartbeat connection of AGCF to I-CSCF；And in memory
The middle dynamic routing table for establishing the address S-CSCF establishes the heartbeat connection of AGCF to S-CSCF；The dynamic routing table is by Hash
Table is realized；
S3:AGCF system subordinate terminal user initiates to register to AGCF system, and after succeeding in registration, AGCF system is according to AGCF system
Subordinate terminal user's virtual map is the standard terminal IMS by configuration；
S4:AGCF system initiates IMS registration to I-CSCF for its subordinate terminal user；
S5:AGCF system receives subordinate terminal user after the response of succeeding in registration of IMS system, extracts the S- in response
The address CSCF is simultaneously updated to dynamic routing table；
S6:AGCF system periodic test S-CSCF dynamic routing table, checks whether the newly-increased address S-CSCF, if newly-increased, builds
The heartbeat connection of vertical AGCF to S-CSCF；
S7:AGCF systems stay detection AGCF is connect with the heartbeat of I-CSCF, AGCF and S-CSCF；If the heart of AGCF and I-CSCF
It jumps connection to disconnect, thens follow the steps S8~S9；It is disconnected if the heartbeat of AGCF and S-CSCF connects, thens follow the steps S10；
S8: if AGCF connect disconnection with primary I-CSCF heartbeat, and AGCF connect intact with spare I-CSCF heartbeat, then marks master
It is malfunctioning node with I-CSCF, and after expiring the life cycle of subordinate's end-user registration to S-CSCF, drives subordinate terminal
User sends initial registration to spare I-CSCF, completes the equipment attachment of user to new available S-CSCF；If AGCF with it is spare
I-CSCF heartbeat connection disconnects, then skips this step；
S9:AGCF continues detection failure node, connect recovery with the heartbeat of primary I-CSCF if detecting AGCF, marks the master
It is available with I-CSCF node, and user is driven to send initial registration to primary I-CSCF；If detecting AGCF and spare I-CSCF
Heartbeat connect and restore, then only mark the spare I-CSCF node available；
S10: the S-CSCF that label heartbeat connection disconnects is malfunctioning node, and AGCF drives all subordinaties being registered under the S-CSCF
Terminal user re-registers to spare S-CSCF initiation, completes the equipment attachment of user to new available S-CSCF, and update dynamic
State routing table.
Specifically, establishing the specific steps of heartbeat connection in the step S2 are as follows:
S201:AGCF system starts cycle timer, according to AGCF system configuration and dynamic routing table to I-CSCF or S-CSCF
Send heartbeat detection request；The heartbeat detection request is the OPTIONS message in Session Initiation Protocol；
After S202:I-CSCF or S-CSCF receives heartbeat detection request, OPTIONGS response is sent to AGCF；
S203:AGCF is to all infomation detection type of messages received, if the information received super message when being timer,
Check whether receive OPTIONS response, if received, mark corresponding I-CSCF or S-CSCF be it is available, otherwise, mark
Remember that corresponding I-CSCF or S-CSCF is failure；If the information received be OPTIONS response, mark corresponding I-CSCF or
S-CSCF is available.
Specifically, updating dynamic routing table in the step S5, specific step is as follows:
S501:AGCF systems inspection registration response, if succeed in registration response, execute step S502, if nullify success response,
Then follow the steps S503；
S502: check that the address of S-CSCF in response whether there is in dynamic routing table, and if it exists, then update S-CSCF letter
Breath；If it does not exist, then increase newly S-CSCF information, and establish the address S-CSCF to S-CSCF information Hash table；The S-CSCF
Information includes the address S-CSCF, registration terminal number and registration terminal information；
S503: S-CSCF information is obtained by dynamic routing table, the information of counterpart terminal is removed from S-CSCF information, and makes end
End registration number subtracts 1；Then check registration terminal number whether be 0, if 0, then by Hash table index and S-CSCF information it is clear
It removes.
Specifically, the AGCF subordinate terminal user is IAD or access gateway based on H248 agreement.
Fig. 1 is the basic flow chart that AGCF subordinate terminal user initiates registration to IMS system.Fig. 2 is that AGCF is subordinated to I-
The deployment connection figure of CSCF.Wherein, two I-CSCF are disposed in IMS network, access device (AG/IAD) is connected to AGCF, AGCF
It is connected to main ownership I-CSCF.
Such as Fig. 3, when primary I-CSCF breaks down, the register flow path of equipment user is as follows under AGCF:
It is primary I-CSCF that step 1:AGCF, which configures I-CSCF_1, and configuration I-CSCF_2 is spare I-CSCF；Establish AGCF and I-
The heartbeat of CSCF connects.Dynamic routing table is generated, establishes the heartbeat connection of AGCF and S-CSCF accordingly；
Registration request is initiated to AGCF after step 2:AG/IAD starting, after the completion of registration, AGCF uses equipment according to system configuration
Family virtual map is the standard terminal IMS；
Step 3:AGCF initiates IMS registration to I-CSCF_1 with REGISTER message；
After step 4:AGCF receives 200 OK response, extracts the address S-CSCF_1 in response and update into dynamic routing table；
Step 5:AGCF periodic test dynamic routing table finds newly-increased S-CSCF address information, establishes AGCF and S-CSCF_1
Heartbeat connection；
Step 6:AGCF detection I-CSCF_1 breaks down, and spare I-CSCF_2 is intact.After terminal expires life cycle, driving
Terminal sends initial registration to spare I-CSCF_2, after completing user to the attachment of new available core net equipment, updates dynamic
Routing table；
Step 7: after I-CSCF_1 restores, mode can be refunded by manual command or automatically according to strategy is refunded, when terminal is raw
After cycle of deposit expires, drives terminal sends initial registration to primary I-CSCF.
As shown in figure 4, the register flow path of equipment user is as follows under AGCF after S-CSCF breaks down:
It is primary I-CSCF that step 1:AGCF, which configures I-CSCF_1, and configuration I-CSCF_2 is spare I-CSCF；Establish AGCF and I-
The heartbeat of CSCF connects.Dynamic routing table is generated, establishes the heartbeat connection of AGCF and S-CSCF accordingly；
Registration request is initiated to AGCF after step 2:AG/IAD starting, after the completion of registration, AGCF uses equipment according to system configuration
Family virtual map is the standard terminal IMS；
Step 3:AGCF registration module initiates IMS registration to I-CSCF_1 with REGISTER message；
After step 4:AGCF receives 200 OK response, extracts the address S-CSCF_1 in response and update into dynamic routing table；
Step 5:AGCF periodic test dynamic routing table finds newly-increased S-CSCF address information, establishes AGCF and S-CSCF_1
Heartbeat connection；
Step 6:AGCF detection S-CSCF_1 breaks down, and drives terminal sends re-register to primary I-CSCF_1 immediately, completes
After the attachment of new available core net equipment, dynamic routing table is updated.
In short, the present invention utilizes the IMS core network element device I/S-CSCF of long-distance disaster mechanism deployment, it is bis- to increase AGCF
Home registration function can be mentioned normally for subordinate's access device and user when the I/S-CSCF of AGCF institute subordinate breaks down
For follow-up business function and service, the stability and reliability of AGCF network element are substantially increased, IMS system disaster tolerance is effectively enhanced
Property, significantly reduce the mean down time of IMS system.
The above is only preferred application examples of the invention, are not intended to limit the scope of the present invention.It is all in the present invention
Spirit and principle within, any modification, equivalent substitution, improvement and etc. done, should be included in protection scope of the present invention it
It is interior.
Claims (4)
1. a kind of dual-homed register method of IMS network AGCF, which comprises the following steps:
S1: primary I-CSCF information and spare I-CSCF information are configured in AGCF system；The primary I-CSCF information and standby
It include the domain name and IP address of I-CSCF with I-CSCF information；
When S2:AGCF system initialization, AGCF system configuration is read, establishes the heartbeat connection of AGCF to I-CSCF；And in memory
The middle dynamic routing table for establishing the address S-CSCF establishes the heartbeat connection of AGCF to S-CSCF；The dynamic routing table is by Hash
Table is realized；
S3:AGCF system subordinate terminal user initiates to register to AGCF system, and after succeeding in registration, AGCF system is according to AGCF system
Subordinate terminal user's virtual map is the standard terminal IMS by configuration；
S4:AGCF system initiates IMS registration to I-CSCF for its subordinate terminal user；
S5:AGCF system receives subordinate terminal user after the response of succeeding in registration of IMS system, extracts the S- in response
The address CSCF is simultaneously updated to dynamic routing table；
S6:AGCF system periodic test S-CSCF dynamic routing table, checks whether the newly-increased address S-CSCF, if newly-increased, builds
The heartbeat connection of vertical AGCF to S-CSCF；
S7:AGCF systems stay detection AGCF is connect with the heartbeat of I-CSCF, AGCF and S-CSCF；If the heart of AGCF and I-CSCF
It jumps connection to disconnect, thens follow the steps S8~S9；It is disconnected if the heartbeat of AGCF and S-CSCF connects, thens follow the steps S10；
S8: if AGCF connect disconnection with primary I-CSCF heartbeat, and AGCF connect intact with spare I-CSCF heartbeat, then marks master
It is malfunctioning node with I-CSCF, and after expiring the life cycle of subordinate's end-user registration to S-CSCF, drives subordinate terminal
User sends initial registration to spare I-CSCF, completes the equipment attachment of user to new available S-CSCF；If AGCF with it is spare
I-CSCF heartbeat connection disconnects, then skips this step；
S9:AGCF continues detection failure node, connect recovery with the heartbeat of primary I-CSCF if detecting AGCF, marks the master
It is available with I-CSCF node, and user is driven to send initial registration to primary I-CSCF；If detecting AGCF and spare I-CSCF
Heartbeat connect and restore, then only mark the spare I-CSCF node available；
S10: the S-CSCF that label heartbeat connection disconnects is malfunctioning node, and AGCF drives all subordinaties being registered under the S-CSCF
Terminal user re-registers to spare S-CSCF initiation, completes the equipment attachment of user to new available S-CSCF, and update dynamic
State routing table.
2. a kind of dual-homed register method of IMS network AGCF according to claim 1, which is characterized in that the step S2
The middle specific steps for establishing heartbeat connection are as follows:
S201:AGCF system starts cycle timer, according to AGCF system configuration and dynamic routing table to I-CSCF or S-CSCF
Send heartbeat detection request；The heartbeat detection request is the OPTIONS message in Session Initiation Protocol；
After S202:I-CSCF or S-CSCF receives heartbeat detection request, OPTIONGS response is sent to AGCF；
S203:AGCF is to all infomation detection type of messages received, if the information received super message when being timer,
Check whether receive OPTIONS response, if received, mark corresponding I-CSCF or S-CSCF be it is available, otherwise, mark
Remember that corresponding I-CSCF or S-CSCF is failure；If the information received be OPTIONS response, mark corresponding I-CSCF or
S-CSCF is available.
3. a kind of dual-homed register method of IMS network AGCF according to claim 1, which is characterized in that the step S5
Specific step is as follows for middle update dynamic routing table:
S501:AGCF systems inspection registration response, if succeed in registration response, execute step S502, if nullify success response,
Then follow the steps S503；
S502: check that the address of S-CSCF in response whether there is in dynamic routing table, and if it exists, then update S-CSCF letter
Breath；If it does not exist, then increase newly S-CSCF information, and establish the address S-CSCF to S-CSCF information Hash table；The S-CSCF
Information includes the address S-CSCF, registration terminal number and registration terminal information；
S503: S-CSCF information is obtained by dynamic routing table, the information of counterpart terminal is removed from S-CSCF information, and makes end
End registration number subtracts 1；Then check registration terminal number whether be 0, if 0, then by Hash table index and S-CSCF information it is clear
It removes.
4. a kind of dual-homed register method of IMS network AGCF according to claim 1, which is characterized in that under the AGCF
Belonging to terminal user is IAD or access gateway based on H248 agreement.
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