CN106797585A

CN106797585A - A kind of P CSCF load management method and devices

Info

Publication number: CN106797585A
Application number: CN201580033830.7A
Authority: CN
Inventors: 陈霞云; 陈丽金; 倪国瑜; 邓涛
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2015-06-29
Filing date: 2015-06-29
Publication date: 2017-05-31
Anticipated expiration: 2035-06-29
Also published as: WO2017000141A8; CN106797585B; WO2017000141A1

Abstract

The embodiment of the invention discloses a kind of P CSCF load management method and devices, it is related to the communications field, realizes load balancing and the load migration lossless to VOLTE speech businesses.Scheme provided in an embodiment of the present invention includes：By receiving migration instruction；Scanning user's context, obtains the load for accessing the source P CSCF；According to scheduled rate, P CSCF address lists are sent respectively to the load for accessing the source P CSCF in batches；Wherein, address of the P CSCF address lists comprising at least one P CSCF in addition to the source P CSCF；When the load number for accessing the source P CSCF meets the migration command request, stop sending P CSCF address lists respectively to the load for accessing the source P CSCF.Load management of the present invention for P CSCF.

Description

A kind of P-CSCF load managements method and device

Technical field

The present invention relates to the communications field, more particularly to a kind of P-CSCF load managements method and device.

Background technology

Network design voice Long Term Evolution (Voice over LTE, abbreviation VoLTE) after, procotol (Internet Protocol, abbreviation IP) IP multimedia subsystem, IMS (IP Multimedia Subsystem, abbreviation IMS) network is by Proxy Call Session Control Function (Proxy-Call Session Control Funtion, abbreviation P-CSCF), query call conversation control function (Interrogating-Call Session Control Funtion, abbreviation I-CSCF) and service call conversation control function (Serving-Call Session Control Funtion, abbreviation S-CSCF) etc. equipment constitute.Wherein, the agent node that P-CSCF is accessed as IMS, all IMS business are required to be accessed by P-CSCF.

Under VoLTE deployment, evolution block core (Evolved Packet Core, abbreviation EPC) packet data network gateway (Packet Data Network GateWay in network, abbreviation PGW) by SGi interfaces and the P-CSCF of IMS network connections, PGW is many-one relationship because of capacity volume variance and P-CSCF opposite joining relations.Access P-CSCF user equipment (User Equipment, abbreviation UE), namely P-CSCF load, selection P-CSCF is mainly allocated by PGW, UE needs first to set up the default bearer of transmission SIP signalings before IMS registration is carried out, during IMS PDN connections foundation P-CSCF addresses are asked to PGW, PGW carries P-CSCF address lists (the weight ratio for each P-CSCF that PGW is pre-configured with according to itself in the response message, feed back P-CSCF address lists, carry out load balancing dispatch user terminal), UE first P-CSCF address of prioritizing selection in P-CSCF address lists, and initiate session initiation protocol (Session Initiation Protocol, abbreviation SIP) registration, normal voice calling and called service could be carried out afterwards.

Wherein, in currently practical deployment, typically according to each P-CSCF performance and net Network deployment planning, the fixation P-CSCF weights being pre-configured with PGW are carried out load balancing dispatch user to the P-CSCF of docking, the load balancing of user's distribution are realized with this.

But, inevitably there are some abnormal scenes, it is necessary to adjust the load of P-CSCF equipment rooms in VoLTE operations, specifically include：

On the one hand, in the way of the fixation P-CSCF weight distributions load being pre-configured with, cause the load between actual P-CSCF unbalanced under some abnormal scenes, although possible no user is accessed on the P-CSCF recovered after such as failure, the number of users of the P-CSCF accesses of new dilatation is considerably less, PGW can issue P-CSCF addresses based on load sharing principle, but due to terminal transparency, not all terminal all can prioritizing selection address list first P-CSCF address etc..The method not being controlled in the prior art for the load imbalance between P-CSCF, and long-term load imbalance will greatly increase the risk of P-CSCF congestions, and cause carrier network not obtain optimal utilization.

On the other hand, there are needs and the user in P-CSCF equipment is moved to scene on other P-CSCF, the scene such as P-CSCF upgradings, resettlement, congestion.When handling these scenes in the prior art, it may will directly need the P-CSCF for upgrading or moving offline or recognize less than congestion, all the VOLTE speech businesses in equipment will be caused to be damaged.

The content of the invention

The present invention provides a kind of P-CSCF load managements method and device, realizes load balancing and the load migration lossless to VOLTE speech businesses.

To reach above-mentioned purpose, embodiments of the invention are adopted the following technical scheme that：

First aspect is there is provided a kind of P-CSCF load managements method, and applied to PGW, methods described includes：

Receive migration instruction；Wherein, the migration instruction includes needing to carry out the source Proxy Call Session Control Function P-CSCF of load migration mark, transport number amount instruction information；

User's context is scanned, access source P-CSCF load is obtained；Wherein, the user's context includes the corresponding relation for each loading the P-CSCF accessed with it；

According to scheduled rate, P-CSCF address lists are sent respectively to the load of the access source P-CSCF in batches；Wherein, the P-CSCF address lists include at least one The address of P-CSCF in addition to the source P-CSCF；

When the load number for accessing the source P-CSCF, which meets the migration instruction, to be required, stop sending P-CSCF address lists respectively to the load of the access source P-CSCF.

With reference in a first aspect, in the first possible implementation of first aspect, the migration instruction also includes purpose P-CSCF mark, for indicating the load migration in the source P-CSCF to the purpose P-CSCF；

The P-CSCF address lists include the address of the purpose P-CSCF, and purpose P-CSCF highest priorities in the P-CSCF address lists.

With reference to the first possible implementation of first aspect or first aspect, in second of possible implementation of first aspect,

Described according to scheduled rate, after sending P-CSCF address lists respectively to the load of the access source P-CSCF in batches, methods described also includes：

If after preset duration, the feedback message that the first load is successfully accessed P-CSCF is not received, then IMS PDN connection release messages are sent to the described first load, to indicate that first load disconnects current IMS PDN connections；Wherein, the IMS PDN connection release messages include configured information, and request is set up for indicating that IMS PDN are initiated in first load again at once；First load loads for any one in the load of the PGW transmissions P-CSCF address lists；

Receive the IMS PDN foundation requests that first load is sent；

To P-CSCF address lists described in first load feedback.

With reference to second of possible implementation of the first possible implementation or first aspect of first aspect or first aspect, in the third possible implementation of first aspect,

It is described to send P-CSCF address lists respectively to the load of the access source P-CSCF in batches according to scheduled rate, including：

According to the scheduled rate, in batches into the load of the access source P-CSCF, the load do not conversed sends P-CSCF address lists respectively.

With reference to first aspect or first aspect the first possible implementation to first party Any one of the third possible implementation in face, in the 4th kind of possible implementation of first aspect,

The transport number amount instruction information includes：

Need the load number of migration；

Or,

The load number of migration is needed to account for the ratio of the load total amount accessed on the source P-CSCF.

With reference to first aspect or first aspect the first possible implementation any one of to the 4th kind of possible implementation of first aspect, in the 5th kind of possible implementation of first aspect,

The reception migration instruction includes：

Receive the migration instruction of keeper's input；

Or,

Receive the migration instruction of service call conversation control function S-CSCF forwardings；Wherein, the migration instruction is inputted by the keeper in the S-CSCF.

With reference to first aspect or first aspect the first possible implementation any one of to the 5th kind of possible implementation of first aspect, in the 6th kind of possible implementation of first aspect,

It is described to stop sending P-CSCF address lists respectively to the load of the access source P-CSCF when the load number for accessing the source P-CSCF meets the migration instruction and required, including：

When receiving N number of load and being successfully accessed P-CSCF feedback message, stop sending P-CSCF address lists respectively to access source P-CSCF load；Wherein, the N is the load number that the transport number amount instruction information is indicated；

Or,

When the stopping for receiving keeper's input migrates instruction, stop sending P-CSCF address lists respectively to the load of the access source P-CSCF；

Or,

When the stopping for receiving the S-CSCF forwardings migrates instruction, stop to the access The load of the source P-CSCF sends P-CSCF address lists respectively；Wherein, it is described stop migration instruction be detected by the S-CSCF access source P-CSCF load number meet it is described migration instruct require that when sends；Or, it is described to stop migration instructing being keeper's input.

With reference to first aspect or first aspect the first possible implementation any one of to the 6th kind of possible implementation of first aspect, in the 7th kind of possible implementation of first aspect,

After the reception migration instruction, methods described also includes：

The load newly accessed is no longer distributed to the source P-CSCF.

Second aspect is there is provided a kind of P-CSCF load managements method, and applied to S-CSCF, methods described includes：

Receive the migration instruction of keeper's input；Wherein, the migration instruction includes needing to carry out the source P-CSCF of load migration mark, transport number amount instruction information；

To the PGW forwardings migration instruction, for indicating instructions of the PGW according to the migration instruction, load migration is carried out to the source P-CSCF.

With reference to second aspect, in the first possible implementation of second aspect,

The migration instruction also includes purpose P-CSCF mark, for indicating the load migration in the source P-CSCF to the purpose P-CSCF.

With reference to the first possible implementation of second aspect or second aspect, in second of possible implementation of second aspect,

The transport number amount instruction information includes：

Need the load number of migration；

Or,

With reference to second of possible implementation of the first possible implementation or second aspect of second aspect or second aspect, in the third possible implementation of second aspect,

After the migration instruction to PGW forwardings, methods described also includes：

The stopping migration instruction that the migration instruction required or received keeper input is met if detecting and accessing the load number of the source P-CSCF, sent to the PGW and stop migration instruction, for indicating that the PGW stops the load migration to the source P-CSCF.

The third aspect there is provided a kind of PGW, including：

Receiving unit, for receiving migration instruction；Wherein, the migration instruction includes needing to carry out the source Proxy Call Session Control Function P-CSCF of load migration mark, transport number amount instruction information；

Acquiring unit, for when the receiving unit receives the migration instruction, scanning user's context, obtaining access source P-CSCF load；Wherein, the user's context includes the corresponding relation for each loading the P-CSCF accessed with it；

Transmitting element, in batches according to scheduled rate, the access source P-CSCF obtained to the acquiring unit load sends P-CSCF address lists respectively；Wherein, the P-CSCF address lists include at least one P-CSCF in addition to source P-CSCF address；

The transmitting element is additionally operable to, when the load number for accessing the source P-CSCF, which meets the migration instruction, to be required, stops sending P-CSCF address lists respectively to the load of the access source P-CSCF.

With reference to the third aspect, in the first possible implementation of the third aspect,

The migration instruction also includes purpose P-CSCF mark, for indicating the load migration in the source P-CSCF to the purpose P-CSCF；

With reference to the first possible implementation of the third aspect or the third aspect, in second of possible implementation of the third aspect,

The transmitting element is additionally operable to：

Described according to scheduled rate, after sending P-CSCF address lists respectively to the load of the access source P-CSCF in batches, if after preset duration, the feedback message that the first load is successfully accessed P-CSCF is not received, then sent out to the described first load IMS PDN connection release messages are sent, to indicate that first load disconnects current IMS PDN connections；Wherein, the IMS PDN connection release messages include configured information, and request is set up for indicating that IMS PDN are initiated in first load again at once；First load loads for any one in the load of the PGW transmissions P-CSCF address lists；

The receiving unit is additionally operable to, and receives the IMS PDN foundation requests that first load is sent；

The transmitting element is additionally operable to, to P-CSCF address lists described in first load feedback.

With reference to second of possible implementation of the first possible implementation or the third aspect of the third aspect or the third aspect, in the third possible implementation of the third aspect,

The transmitting element specifically for：

With reference to the third aspect or the third aspect the first possible implementation any one of to the third possible implementation of the third aspect, in the 4th kind of possible implementation of the third aspect,

The transport number amount instruction information includes：

Need the load number of migration；

Or,

With reference to the third aspect or the third aspect the first possible implementation any one of to the 4th kind of possible implementation of the third aspect, in the 5th kind of possible implementation of the third aspect,

The receiving unit specifically for：

Receive the migration instruction of keeper's input；

Or,

With reference to the third aspect or the third aspect the first possible implementation any one of to the 5th kind of possible implementation of the third aspect, in the 6th kind of possible implementation of the third aspect,

The transmitting element specifically for：

Or,

When the stopping for receiving the S-CSCF forwardings migrates instruction, stop sending P-CSCF address lists respectively to the load of the access source P-CSCF；Wherein, it is described stop migration instruction be detected by the S-CSCF access source P-CSCF load number meet it is described migration instruct require that when sends；Or, it is described to stop migration instructing being keeper's input.

With reference to the third aspect or the third aspect the first possible implementation any one of to the 6th kind of possible implementation of the third aspect, in the 7th kind of possible implementation of the third aspect,

The PGW also includes allocation unit, for no longer distributing the load newly accessed to the source P-CSCF.

Fourth aspect there is provided a kind of S-CSCF, including：

Receiving unit, the migration instruction for receiving keeper's input；Wherein, the migration instruction includes needing to carry out the source Proxy Call Session Control Function P-CSCF of load migration mark, transport number amount instruction information；

Retransmission unit, for being instructed to the packet data network gateway PGW migrations for forwarding the receiving unit to receive, for indicating instructions of the PGW according to the migration instruction, Load migration is carried out to the source P-CSCF.

With reference to fourth aspect, in the first possible implementation of fourth aspect,

With reference to the first possible implementation of fourth aspect or fourth aspect, in second of possible implementation of fourth aspect,

The transport number amount instruction information includes：

Need the load number of migration；

Or,

With reference to second of possible implementation of the first possible implementation or fourth aspect of fourth aspect or fourth aspect, in the third possible implementation of fourth aspect,

The S-CSCF also includes：

Detection unit, is required for detecting whether access source P-CSCF load number meets the migration instruction；

The retransmission unit is additionally operable to, if the detection unit detects and accesses the load number of the source P-CSCF and meet that the migration instruction is required or the receiving unit receives the stopping migration instruction of keeper input, the stopping migration instruction is sent to the PGW, for indicating that the PGW stops the load migration to the source P-CSCF.

There is provided a kind of PGW in terms of 5th, including：

Receiver, for receiving migration instruction；Wherein, the migration instruction includes needing to carry out the source Proxy Call Session Control Function P-CSCF of load migration mark, transport number amount instruction information；

Processor, for when the receiver receives the migration instruction, scanning user's context, obtaining access source P-CSCF load；Wherein, the user's context includes the corresponding relation for each loading the P-CSCF accessed with it；

Transmitter, in batches according to scheduled rate, the access source P-CSCF obtained to the processor load sends P-CSCF address lists respectively；Wherein, the P-CSCF address lists include at least one P-CSCF in addition to source P-CSCF address；

The transmitter is additionally operable to, when the load number for accessing the source P-CSCF, which meets the migration instruction, to be required, stops sending P-CSCF address lists respectively to the load of the access source P-CSCF.

With reference to the 5th aspect, in the first possible implementation of the 5th aspect,

With reference to the 5th aspect or the first possible implementation of the 5th aspect, in second of possible implementation of the 5th aspect,

The transmitter is additionally operable to：

Described according to scheduled rate, after sending P-CSCF address lists respectively to the load of the access source P-CSCF in batches, if after preset duration, the feedback message that the first load is successfully accessed network protocol multi-media sub-system IMS is not received, IMS PDN connection release messages then are sent to the described first load, to indicate that first load disconnects current IMS PDN connections；Wherein, the IMS PDN connection release messages include configured information, and request is set up for indicating that IMS PDN are initiated in first load again at once；First load loads for any one in the load of the PGW transmissions P-CSCF address lists；

The receiver is additionally operable to, and receives the IMS PDN foundation requests that first load is sent；

The transmitter is additionally operable to, to P-CSCF address lists described in first load feedback.

With reference to second of possible implementation of the first possible implementation or the 5th aspect of the 5th aspect or the 5th aspect, in the third possible implementation of the 5th aspect In,

The transmitter specifically for：

With reference to the 5th aspect or the 5th aspect the first possible implementation to the 5th aspect any one of the third possible implementation, in the 4th kind of possible implementation of the 5th aspect,

The transport number amount instruction information includes：

Need the load number of migration；

Or,

With reference to the 5th aspect or the 5th aspect the first possible implementation to the 5th aspect any one of the 4th kind of possible implementation, in the 5th kind of possible implementation of the 5th aspect,

The receiver specifically for：

Receive the migration instruction of keeper's input；

Or,

Receive the migration instruction of S-CSCF forwardings；Wherein, the migration instruction is inputted by the keeper in the S-CSCF.

With reference to the 5th aspect or the 5th aspect the first possible implementation to the 5th aspect any one of the 5th kind of possible implementation, in the 6th kind of possible implementation of the 5th aspect,

The transmitter specifically for：

Or,

When the stopping for receiving keeper's input migrates instruction, stop to described in the access Source P-CSCF load sends P-CSCF address lists respectively；

Or,

With reference to the 5th aspect or the 5th aspect the first possible implementation to the 5th aspect any one of the 6th kind of possible implementation, in the 7th kind of possible implementation of the 5th aspect,

The processor is additionally operable to, and the load newly accessed is no longer distributed to the source P-CSCF.

There is provided a kind of S-CSCF in terms of 6th, including：

Receiver, the migration instruction for receiving keeper's input；Wherein, the migration instruction includes needing to carry out the source Proxy Call Session Control Function P-CSCF of load migration mark, transport number amount instruction information；

Processor, for being instructed to the PGW migrations for forwarding the receiver to receive, for indicating instructions of the PGW according to the migration instruction, load migration is carried out to the source P-CSCF.

With reference to the 6th aspect, in the first possible implementation of the 6th aspect,

With reference to the 6th aspect or the first possible implementation of the 6th aspect, in second of possible implementation of the 6th aspect,

The transport number amount instruction information includes：

Need the load number of migration；

Or,

With reference to second of possible implementation of the first possible implementation or the 6th aspect of the 6th aspect or the 6th aspect, in the third possible implementation of the 6th aspect,

The processor is additionally operable to, and whether detection access source P-CSCF load number, which meets the migration instruction, requires；

The processor is additionally operable to, if the processor detects and accesses the load number of the source P-CSCF and meet that the migration instruction is required or the receiver receives the stopping migration instruction of keeper input, the stopping migration instruction is sent to the PGW, for indicating that the PGW stops the load migration to the source P-CSCF.

P-CSCF load managements method and device provided in an embodiment of the present invention, by receiving migration instruction；Wherein, the migration instruction includes needing to carry out the source Proxy Call Session Control Function P-CSCF of load migration mark, transport number amount instruction information；User's context is scanned, access source P-CSCF load is obtained；Wherein, the user's context includes the corresponding relation for each loading the P-CSCF accessed with it；According to scheduled rate, P-CSCF address lists are sent respectively to the load of the access source P-CSCF in batches；Wherein, the P-CSCF address lists include at least one P-CSCF in addition to source P-CSCF address；When the load number for accessing the source P-CSCF, which meets the migration instruction, to be required, stop sending P-CSCF address lists respectively to the load of the access source P-CSCF.So, according to the instruction of migration instruction, the address list not comprising source P-CSCF is sent by the load to access source P-CSCF so that load and accessed again to non-source P-CSCF, realize the load migration to source P-CSCF, meets the requirement of migration instruction；Therefore, can be by migrating the intelligent control instructed, it can be very good to improve the equilibrium degree that load is distributed, also each P-CSCF will be correspondingly reduced and the risk overloaded occur, the load that can also will be unable to continue on the P-CSCF (P-CSCF of overload or O＆M) of service is unloaded, avoid P-CSCF overload or O＆M to the damage of the call of load accessed thereon, Consumer's Experience is improved well.

Brief description of the drawings

In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, the required accompanying drawing used in embodiment or description of the prior art will be simply situated between below Continue, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, and other accompanying drawings can also be obtained according to these accompanying drawings.

A kind of IMS PDN Establishing process figures that Fig. 1 provides for prior art；

A kind of fault recovery flow chart that Fig. 2 provides for prior art；

Fig. 3 is a kind of P-CSCF load managements method flow schematic diagram provided in an embodiment of the present invention；

Fig. 4 is another P-CSCF load managements method flow schematic diagram provided in an embodiment of the present invention；

Fig. 5 is another P-CSCF load management method flow schematic diagram provided in an embodiment of the present invention；

Fig. 6 is a kind of PGW apparatus structure schematic diagram provided in an embodiment of the present invention；

Fig. 7 is another PGW provided in an embodiment of the present invention apparatus structure schematic diagram；

Fig. 8 is a kind of S-CSCF apparatus structure schematic diagram provided in an embodiment of the present invention；

Fig. 9 is another S-CSCF provided in an embodiment of the present invention apparatus structure schematic diagram；

Figure 10 is another PGW provided in an embodiment of the present invention apparatus structure schematic diagram；

Figure 11 is another S-CSCF provided in an embodiment of the present invention apparatus structure schematic diagram.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made belongs to the scope of protection of the invention.

Specifically, under VoLTE deployment, UE is initiated before IMS registration, can first set up IMS PDN connections.The process that UE sets up IMS PDN connections can be as shown in Figure 1：

S101, UE send PDN connection requests (PDN connectivity request) message to mobile management entity (Mobility Management Entity, abbreviation MME), Request P-CSCF addresses are carried in message to indicate.

S102, MME send to create to gateway (Serving GateWay, abbreviation SGW) carries the instruction of request P-CSCF addresses in session request (Create session request) message, message.

S103, SGW send to PGW and the instruction of request P-CSCF addresses are carried in Create session request message, message.

S104, PGW select P-CSCF address lists, and issue SGW by creating conversational response Create session response message according to the principle of load sharing.

Wherein, the P-CSCF address lists of selection at least include the P-CSCF for the preferential distribution that PGW is selected according to load sharing principle address.

Specifically, in currently practical deployment, typically being planned according to each P-CSCF performance and network design, the fixation P-CSCF weights being pre-configured with PGW, load balancing dispatch user is carried out to the P-CSCF of docking, the load balancing of user's distribution is realized with this.

Exemplary, it is assumed that a PGW manages 4 P-CSCF (being recorded as P-CSCF1, P-CSCF2, P-CSCF3, P-CSCF4 respectively), plans that the fixation P-CSCF weights being pre-configured with PGW are according to each P-CSCF performance and network design：25∶25∶10∶40.So, PGW when carrying out load balancing distribution to user, is proceeded as follows successively in sequence according to the weighted value of configuration：First 25 loads are distributed to P-CSCF1, again 25 loads are distributed to P-CSCF2, again 10 loads are distributed to P-CSCF3, again 40 loads are distributed to P-CSCF4, repeat afterwards, to ensure user's percentage on each P-CSCF substantially close to respective weight ratio (25: 25: 10: 40).

Optionally, the P-CSCF address lists of selection can be a P-CSCF address or multiple P-CSCF addresses.

S105, SGW send Create session response message to MME, P-CSCF addresses S105, SGW is carried in message sent to MME in Create session response message, message and carry P-CSCF address lists.

S106, MME send in PDN connectivity accept message, message to UE and carry P-CSCF address lists.

S107, UE select a P-CSCF address to initiate IMS registration from P-CSCF address lists.

It is preferred that, UE is from P-CSCF address lists, and IMS registration is initiated in the P-CSCF addresses of selection highest priority.

S108, UE are after IMS registration success, and the P-CSCF of UE accesses is sent to PCRF applies authorization requests (Application auth-request, abbreviation AAR) message.

Wherein, UE mark and the P-CSCF addresses of UE registrations are carried in AAR message.

S109, PCRF send credit re-authorization to PGW and ask (Re-Auth-Request, abbreviation RAR) message.

Wherein, the P-CSCF addresses of UE registrations are carried in RAR message.

It follows that by S108 and the steps of S109 two, PGW is known that the P-CSCF addresses of UE registrations, and UE and its P-CSCF of access corresponding relation are updated in the user's context in PGW.

Further, after UE is in IMS registration success, there is the risk broken down in P-CSCF, when some P-CSCF breaks down, and PGW also needs to carry out fault recovery to the UE for accessing the P-CSCF；Referring to Fig. 2, so that PGW is to P-CSCF1 monitoring process as an example, the UE for the accessing P-CSCF1 processes for carrying out fault recovery are described PGW, the process can include：

S201, PGW periodically detect whether P-CSCF1 is reachable；

S202, when PGW has found that P-CSCF1 is unreachable, PGW sends more new bearer request (Update bearer request) message by SGW to the UE that is registered on P-CSCF1；

Wherein, the P-CSCF address lists after updating are carried in Update bearer request Messages Messages；The P-CSCF address lists of renewal do not include the P-CSCF1 of failure.

S202, UE are received after the P-CSCF address lists after updating, and a P-CSCF address is selected from the P-CSCF address lists after renewal, IMS registration is initiated again.

It should be noted that due to UE compatibility issues, part terminal is not supported in the fault recovery flow that PGW is initiated, i.e. S202, UE receives the P-CSCF addresses after updating IMS registration is not initiated in list again.

Flow after S202 is identical with S108 and S109, is no longer repeated herein.

Embodiment one

The embodiment of the present invention one provides a kind of P-CSCF load managements method, applied to PGW, and referring to Fig. 3, methods described can include：

S301, PGW receive migration instruction.

Wherein, the migration instruction includes needing to carry out the source P-CSCF of load migration mark, transport number amount instruction information；

It should be noted that P-CSCF mark can be P-CSCF address, or P-CSCF numbering or other, the present invention to this without specific restriction, it is every can unique mark P-CSCF information can as P-CSCF mark.

Optionally, the transport number amount instruction information can include：Need the load number of migration；Or, it is necessary to the load number of migration accounts for the ratio of the load total amount accessed on the source P-CSCF.

Wherein, what the transport number amount instruction information was indicated can be access source P-CSCF all or part of load.

It should be noted that, when transport number amount instruction information accounts for the ratio of the load total amount accessed on the source P-CSCF for the load number that needs are migrated, it can be represented with the form of percentage, form that can also be decimally is represented, it can also be represented with other forms, the present invention is to this without specific restriction.

Exemplary, it is assumed that the transport number amount instruction information in a migration instruction is needs the load number migrated, and value is " 50 ", then can be used to indicate that the load migration of access 50 on the P-CSCF of source to other P-CSCF.

Exemplary, assuming that the transport number amount instruction information in a migration instruction accounts for the ratio of the load total amount accessed on the source P-CSCF for the load number that needs are migrated, and value is " 50% ", then it can be used to indicate that in the load that will be accessed on the P-CSCF of source 50% load migration to other P-CSCF.

Further, described to migrate the migration that instruction can be also used for representing to specify target, therefore, the migration instruction can also include purpose P-CSCF mark, will for instruction Load migration in the source P-CSCF is on the purpose P-CSCF.

Optionally, the reception migration instruction can include following two schemes：

The first scheme：

Receive the migration instruction of keeper's input.

Wherein, migration instruction can keeper judge need to source P-CSCF carry out load migration when inputted on PGW interfaces.

Second scheme：

Receive the migration instruction of S-CSCF forwardings.

Wherein, it is described migration instruction can keeper judge need to source P-CSCF carry out load migration when inputted on S-CSCF interfaces.

Optionally, S-CSCF can be realized to PGW forwarding migration instructions by following flows (step 1 to step 4)：

Migration instruction is transmitted to HSS by step 1, S-CSCF by the interaction message with home signature user server (Home Subscriber Server, abbreviation HSS)；

Wherein, S-CSCF and HSS interaction message can be：Server-assignment response (Server-Assignment-Request) message.

Migration instruction is transmitted to MME by step 2, HSS by the interaction message with mobile management entity (Mobility Management Entity, abbreviation MME)；

Wherein, when there is multiple MME in network organizing, HSS then will move instruction by way of broadcast and be transmitted to each MME.

Exemplary, HSS and MME interaction message can be insertion subscription data (Insert Subscriber Data) request.

Migration instruction is transmitted to SGW by step 3, MME by the interaction message with gateway (Serving GateWay, abbreviation SGW)；

Wherein, when there is multiple SGW in network organizing, MME then will move instruction by way of broadcast and be transmitted to each SGW.

Exemplary, MME and SGW interaction message can be bearing modification request (Modify Bearer Request) request.

Step 3, SGW pass through PGW by instruction is migrated.

Specifically, in above two scheme, judging need that the condition that source P-CSCF carries out load migration can be included but is not limited in following conditions one or more：Load imbalance, source P-CSCF, source P-CSCF carry out O＆M etc..

It should be noted that needing to carry out source P-CSCF the condition of load migration for judgement, it can determine according to the actual requirements, the present invention is to this without specific restriction.

S302, PGW scan user's context, obtain access source P-CSCF load.

Wherein, the user's context includes the corresponding relation for each loading the P-CSCF accessed with it.

Exemplary, as shown in table 1, illustrate a kind of user's context；

Table 1

P-CSCF mark	Access the load mark of the P-CSCF
P-CSCF mark	Access the load mark of the P-CSCF	1	UE1、UE3
2	UE2、UE4、UE8	1	UE1、UE3
2	UE2、UE4、UE8	3	UE5、UE6
5	UE7	3	UE5、UE6
5	UE7	......	......

It should be noted that table 1 is in exemplary fashion, the content included of user's context is illustrated, is not the specific restriction to the form and content of user's context.

Exemplary, it is assumed that the mark for including P-CSCF3 in the migration instruction that PGW2 is received, illustrate that PGW2 needs are unloaded according to the instruction of migration instruction to P-CSCF3；Therefore, the user's context as shown in table 1 inside PGW2 scannings, the load that can obtain access P-CSCF3 is UE5, UE6.

S303, PGW send P-CSCF address lists respectively to the load for accessing the source P-CSCF in batches according to scheduled rate.

Wherein, the P-CSCF address lists include at least one P-CSCF in addition to source P-CSCF address.

Further, if also include purpose P-CSCF mark in the migration instruction, that is, target migration is specified, the P-CSCF address lists also include the purpose P-CSCF in migration instruction, and purpose P-CSCF highest priorities in P-CSCF address lists.

If it should be noted that the migration does not include purpose P-CSCF mark in instructing, that is, during the migration of non-designated target, the content of the P-CSCF address lists determines that this be not described in detail the present invention according to load sharing principle.

The address of the source P-CSCF is not included in the P-CSCF address lists sent due to the load to access source P-CSCF, so that receiving the load of P-CSCF address lists can reregister with other P-CSCF that P-CSCF address lists include, the migration of the load on the P-CSCF of source is realized.

Specifically, scheduled rate is indicated can be while send the quantity of information, therefore, according to scheduled rate, P-CSCF address lists are sent respectively to access source P-CSCF load in batches, refer to individual several load transmission P-CSCF address lists that the scheduled rate every time into access source P-CSCF load is indicated, it is wholesale under remaining to send.

Optionally, scheduled rate is less than or equal to PGW disposal ability.Scheduled rate can be set according to the actual requirements, and the present invention is to this without specific restriction.

It is preferred that, scheduled rate is equal to PGW disposal ability

Exemplary, it is assumed that PGW disposal ability is that can be interacted with 100 P-CSCF each second, then scheduled rate can be then each second less than or equal to 100/ second, you can send P-CSCF address lists with the loads that clockwise per second is less than 100 access source P-CSCF.

Exemplary, based on the example in above-mentioned S302, if PGW disposal ability is that can be interacted with 100 P-CSCF each second, then PGW2 then can send P-CSCF address lists to UE5, UE6 simultaneously.

It should be noted that when sending P-CSCF address lists in batches according to scheduled rate, if the expense for detecting PGW is excessive, scheduled rate transmission can also be reduced, to improve PGW performances.

Further, it is therefore, described according to scheduled rate for the PGW access source P-CSCF obtained load, it is understood that there may be the load conversed, P-CSCF address lists are sent respectively to the load of the access source P-CSCF in batches, can be included：

According to scheduled rate, the load do not conversed into the load of the access source P-CSCF in batches sends the P-CSCF address lists respectively.

Further, the load conversed in access source P-CSCF load, after after end of conversation, being sent to P-CSCF address lists.

Exemplary, can be by judging whether that QCI=1 voice dedicated bearing judges whether load is being conversed.

If specifically, there is QCI=1 voice dedicated bearing, judging that load is conversed；Vice versa.

Optionally, the process that PGW sends P-CSCF address lists to load can comprise the steps：

P-CSCF address lists are sent to SGW by step A, PGW；

Wherein, PGW can by other signaling messages of S5/S8 interfaces to SGW send P-CSCF address lists.

Exemplary, other signaling messages of S5/S8 interfaces can ask Update bearer request message to update carrying.

P-CSCF address lists are sent to MME by step B, SGW；

Wherein, PGW can by S11 interface signaling messages to MME send P-CSCF address lists.

Exemplary, S11 interface signaling messages can be Update bearer request message.

P-CSCF address lists are sent to load by step C, MME.

Wherein, MME can by network attached storage (Network Attached Storage, abbreviation NAS) message to load send P-CSCF address lists.

Exemplary, NAS message can ask session management request message for session management.

S304, when access source P-CSCF load number meet migration instruction require when, PGW stop to access source P-CSCF load send P-CSCF address lists.

Wherein, access source P-CSCF load number meets migration instruction requirement and referred to, pass through the process of load migration, (quantity indicated by transport number amount instruction information in migration instruction) load migration N number of in the load for accessing source P-CSCF, into non-source P-CSCF, is met into the requirement of migration instruction.

It was found from above-mentioned S108 and S109, when load is successfully accessed P-CSCF, PGW can receive the message of the mark for the P-CSCF that the carrying load mark for the P-CSCF transmissions that load is successfully accessed and load are accessed, it therefore, it can the message of the mark by receiving the carrying load mark for the P-CSCF transmissions that load is successfully accessed and its P-CSCF of access to judge whether to migrate successfully.

Optionally, require, can include for judging whether the load number for accessing the source P-CSCF meets migration instruction：

When receiving N number of load and being successfully accessed P-CSCF feedback message, the load number for accessing the source P-CSCF meets migration instruction and required；Wherein, the N is the load number that the transport number amount instruction information is indicated.

Wherein, the feedback message can be the RAR message in S109.The mark for the P-CSCF that load mark and load are newly accessed is carried in the feedback message.

Accordingly, it is described when the load number satisfaction migration instruction for accessing the source P-CSCF is required, stop sending P-CSCF address lists respectively to the load for accessing the source P-CSCF, can include：

When PGW, which receives N number of load, is successfully accessed P-CSCF feedback message, stop sending P-CSCF address lists respectively to the load of the access source P-CSCF；

Or,

When the PGW stoppings for receiving keeper's input migrate instruction, stop sending P-CSCF address lists respectively to the load of the access source P-CSCF.

It is further alternative, it is described when the load number satisfaction migration instruction for accessing source P-CSCF is required, stop sending P-CSCF address lists to access source P-CSCF load, can include：

The stopping migration instruction of S-CSCF forwardings is received, stops sending P-CSCF address lists respectively to the load of the access source P-CSCF.

Wherein, it is described to stop migration instructing being to meet migration instruction by the S-CSCF load numbers for detecting access source P-CSCF to require that when sends；Or, it is described to stop keeper's input that migration instruction is S-CSCF receptions.

Specifically, S-CSCF can be by counting the load number on the P-CSCF of access source Judgement source P-CSCF load number meets migration instruction and required.

It should be noted that S-CSCF forwardings stop the process of migration instruction, and can be identical with the process of the S-CSCF forwarding migration instructions described in S301, this is no longer repeated herein.

Further, it was found from above-mentioned S108 and S109, when load is successfully accessed P-CSCF, PGW can receive the message of the mark for the P-CSCF that the carrying load mark for the P-CSCF transmissions that load is successfully accessed and load are accessed, but there is also being supported on to receive after new-CSCF address lists, the phenomenon of IMS registration is not initiated again, therefore, after S303, methods described can also include：

If after preset duration, the feedback message that the first load is successfully accessed P-CSCF is not received, then multimedia subsystem, IMS grouped data network PDN connection release message is sent to the described first load, to indicate that first load disconnects current IMS PDN connections.

Wherein, the IMS PDN connection release messages include configured information, and request is set up for indicating that IMS PDN are initiated in first load again at once；First load is any one load in the load for receive the P-CSCF address lists.

Receive the IMS PDN foundation requests that the first load is sent；

To the first load feedback P-CSCF address lists.

Optionally, the configured information can be to reactivate request (reactivation requested) cause value.

Specifically, the preset duration can be realized using timer, i.e., after sending the P-CSCF address lists to the first load, that is, start timer, when the timer times out, then preset duration terminates.

It should be noted that the specific value of preset duration, can set according to the actual requirements, the present invention is to this without specific restriction.Wherein, preset duration setting is longer, and the performance consumption to PGW is bigger, but more accurate can monitor whether load accesses again；It is shorter that preset duration is set, and the performance to PGW is that have saving, but it is possible that load is not in time for registration completion also, PGW timer has timed, out, and causes erroneous judgement.

It is preferred that, the timer can cooperate with initiating the timer of SIP registration time-out in load.Judge that the duration of the whether successful timer accessed again of load can in PGW With than in load initiate SIP registration time-out timer when grow up 2~3 seconds.

Optionally, after S301, methods described can also include：The load newly accessed is no longer distributed to source P-CSCF.

P-CSCF load managements method provided in an embodiment of the present invention, according to the instruction of migration instruction, address list not comprising source P-CSCF is sent by the load to access source P-CSCF, accessed again to non-source P-CSCF so that loading, the load migration to source P-CSCF is realized, the requirement of migration instruction is met；Therefore, can be by migrating the intelligent control instructed, it can be very good to improve the equilibrium degree that load is distributed, also each P-CSCF will be correspondingly reduced and the risk overloaded occur, the load that can also will be unable to continue on the P-CSCF (P-CSCF of overload or O＆M) of service is unloaded, avoid P-CSCF overload or O＆M to the damage of the call of load accessed thereon, Consumer's Experience is improved well.

Embodiment two

The embodiment of the present invention two provides another P-CSCF load managements method, by EPC networks exemplified by the interacting of unit in IMS network, and the method shown in Fig. 3 is described in detail.Wherein, keeper inputs migration instruction on PGW.

Referring to Fig. 4, methods described can include：

S401, PGW receive the migration instruction of keeper's input.

Wherein, the migration instruction is keeper by system data, judges what is sent when the P-CSCF A in PGW management overload.

Exemplary, the migration instruction can be as shown in table 2.

Table 2

Source P-CSCF is identified	P-CSCF A
Source P-CSCF is identified	P-CSCF A	Need the load number of migration	200
Purpose P-CSCF is identified	B	Need the load number of migration	200

S402, PGW scan user's context, obtain access P-CSCF A load.

Exemplary, it is assumed that PGW scans user's context, and obtain access P-CSCF A is loaded with 500.

S403, PGW are according to scheduled rate, in batches into access P-CSCF A load The load do not conversed sends the P-CSCF address lists after updating, and timer is respectively started.

Wherein, the P-CSCF address lists after renewal do not include P-CSCF A address, address and highest priority comprising P-CSCF A.

It is assumed that according to PGW disposal ability, the scheduled rate is each second 100, then, in S403,100 loads that PGW is not conversed into access P-CSCF A load first send the P-CSCF address lists after updating, and timer is respectively started.

Specifically, PGW is according to scheduled rate, 100 loads do not conversed into access P-CSCF A load send the P-CSCF address lists after updating, and are to forward transmission step by step by SGW, MME.

If before some corresponding timer expiry of load, the load that PGW reception P-CSCF B are sent is successfully accessed P-CSCF feedback message, illustrates that this load included in feedback message is realized and is migrated from P-CSCF A to P-CSCF B.

Further, if after timer expiry, PGW does not receive the feedback message that the load 1 that any P-CSCF sends is successfully accessed P-CSCF, then performs S407.

S404, PGW send IMS PDN connection release messages to load 1.

Wherein, the IMS PDN connection release messages include reactivation requested cause values.

Specifically, PGW sends IMS PDN connection release messages to load 1, it is to forward transmission step by step by SGW, MME.

The IMS PDN that S405, PGW receive the transmission of load 1 set up request and to the P-CSCF address lists after the feedback renewal of load 1, to cause load 1 completes IMS to re-register.

It should be noted that load 1 completes the process that IMS is re-registered, and it is identical with the process shown in Fig. 1, no longer it is described in detail herein.

When PGW receives when being used to indicate that 200 loads have all been successfully accessed P-CSCF B feedback message of P-CSCF B transmissions, then S406 is performed.

S406, stop to access P-CSCF A load send update after P-CSCF address lists.

Further, due to being provided with timer in migration, it is to avoid due to the migration failure that load compatibility issue is caused, the phenomenon that will also avoid the call of load impaired.

Embodiment three

The embodiment of the present invention three provides another P-CSCF load managements method, applied to S-CSCF, and referring to Fig. 5, methods described can include：

S501, S-CSCF receive the migration instruction of keeper's input.

Wherein, the migration instruction includes needing to carry out the source Proxy Call Session Control Function P-CSCF of load migration mark, transport number amount instruction information.

Optionally, the transport number amount instruction information includes：Need the load number of migration；Or, it is necessary to the load number of migration accounts for the ratio of the load total amount accessed on the source P-CSCF.

It should be noted that being described in detail for transport number amount instruction information in embodiment one, no longer repeated herein.

Further, the migration instruction also includes purpose P-CSCF mark, for indicating the load migration in the source P-CSCF to the purpose P-CSCF.

S502, S-CSCF are instructed to the PGW forwardings migration, and for indicating instructions of the PGW according to transport number amount instruction information, load migration is carried out to source P-CSCF.

It should be noted that the instruction of PGW migration instructions, the process of load migration is carried out to source P-CSCF, is described in detail in embodiment one, here is omitted.

Optionally, after S502, methods described can also include：

If the load number for detecting access source P-CSCF meets migration instruction and required, sent to PGW and stop migration instruction, for indicating that PGW stops the load migration to source P-CSCF.

P-CSCF load managements method provided in an embodiment of the present invention, according to the instruction of migration instruction, by sending migration instruction to PGW, PGW is according to the instruction of transport number amount instruction information, load migration is carried out to source P-CSCF, the load migration to source P-CSCF is realized, the requirement of migration instruction is met；Therefore, can be by migrating the intelligent control instructed, it can be very good to improve the equilibrium degree that load is distributed, also each P-CSCF will be correspondingly reduced and the risk overloaded occur, the load that can also will be unable to continue on the P-CSCF (P-CSCF of overload or O＆M) of service is unloaded, avoid P-CSCF overload or O＆M to the damage of the call of load accessed thereon, Consumer's Experience is improved well.

Example IV

The embodiment of the present invention four provides a kind of PGW 60, referring to Fig. 6, and the PGW 60 can include：

Receiving unit 601, for receiving migration instruction；Wherein, the migration instruction includes needing to carry out the source Proxy Call Session Control Function P-CSCF of load migration mark, transport number amount instruction information；

Acquiring unit 602, for when the receiving unit 601 receives the migration instruction, scanning user's context, obtaining access source P-CSCF load；Wherein, the user's context includes the corresponding relation for each loading the P-CSCF accessed with it；

Transmitting element 603, in batches according to scheduled rate, the access source P-CSCF obtained to the acquiring unit 602 load sends P-CSCF address lists respectively；Wherein, the P-CSCF address lists include at least one P-CSCF in addition to source P-CSCF address；

The transmitting element 603 is additionally operable to, and when the load number for accessing the source P-CSCF, which meets the migration instruction, to be required, stops the load to the access source P-CSCF P-CSCF address lists are sent respectively.

Further, the migration instruction can also include purpose P-CSCF mark, for indicating the load migration in the source P-CSCF to the purpose P-CSCF；

Accordingly, the P-CSCF address lists include the address of the purpose P-CSCF, and purpose P-CSCF highest priorities in the P-CSCF address lists.

Further, the transmitting element 603 can be also used for：

Described according to scheduled rate, after sending P-CSCF address lists respectively to the load of the access source P-CSCF in batches, if after preset duration, the feedback message that the first load is successfully accessed P-CSCF is not received, network protocol multi-media sub-system IMS grouped data network PDN connection release messages then are sent to the described first load, to indicate that first load disconnects current IMS PDN connections；Wherein, the IMS PDN connection release messages include configured information, and request is set up for indicating that IMS PDN are initiated in first load again at once；First load loads for any one in the load of the PGW transmissions P-CSCF address lists；

The receiving unit 601 can be also used for, and receive the IMS PDN foundation requests that first load is sent；

The transmitting element 603 can be also used for, to P-CSCF address lists described in first load feedback.

Further, the transmitting element 603 specifically can be used for：

Optionally, the transport number amount instruction information can include：

Need the load number of migration；

Or,

Optionally, the receiving unit 601 specifically can be used for：

Receive the migration instruction of keeper's input；

Or,

Optionally, the transmitting element 603 specifically can be used for：

Or,

Further, referring to Fig. 7, the PGW 60 can also include allocation unit 604, for no longer distributing the load newly accessed to the source P-CSCF.

PGW 60 provided in an embodiment of the present invention, according to the instruction of migration instruction, the address list not comprising source P-CSCF is sent by the load to access source P-CSCF so that load and accessed again to non-source P-CSCF, the load migration to source P-CSCF is realized, the requirement of migration instruction is met；Therefore, can be by migrating the intelligent control instructed, it can be very good to improve the equilibrium degree that load is distributed, also each P-CSCF will be correspondingly reduced and the risk overloaded occur, the load that can also will be unable to continue on the P-CSCF (P-CSCF of overload or O＆M) of service is unloaded, avoid P-CSCF overload or O＆M to the damage of the call of load accessed thereon, Consumer's Experience is improved well.

Embodiment five

The embodiment of the present invention five provides a kind of S-CSCF 80, referring to Fig. 8, and the S-CSCF 80 can include：

Receiving unit 801, the migration instruction for receiving keeper's input；Wherein, it is described Migration instruction includes needing to carry out the source Proxy Call Session Control Function P-CSCF of load migration mark, transport number amount instruction information；

Retransmission unit 802, for being instructed to the PGW migrations for forwarding the receiving unit 801 to receive, for indicating instructions of the PGW according to the migration instruction, load migration is carried out to the source P-CSCF.

Optionally, the transport number amount instruction information can include：

Need the load number of migration；

Or,

Further, referring to Fig. 9, the S-CSCF 80 can also include：

Detection unit 803, is required for detecting whether access source P-CSCF load number meets the migration instruction；

The retransmission unit 802 is additionally operable to, if the detection unit 803 detects and accesses the load number of the source P-CSCF and meet that the migration instruction is required or the receiving unit 801 receives the stopping migration instruction of keeper input, the stopping migration instruction is sent to the PGW, for indicating that the PGW stops the load migration to the source P-CSCF.

S-CSCF 80 provided in an embodiment of the present invention, according to the instruction of migration instruction, by sending migration instruction to PGW, PGW is according to the instruction of transport number amount instruction information, load migration is carried out to source P-CSCF, the load migration to source P-CSCF is realized, the requirement of migration instruction is met；Therefore, can be by migrating the intelligent control instructed, it can be very good to improve the equilibrium degree that load is distributed, also each P-CSCF will be correspondingly reduced and the risk overloaded occur, the load that can also will be unable to continue on the P-CSCF (P-CSCF of overload or O＆M) of service is unloaded, avoid P-CSCF overload or O＆M to the damage of the call of load accessed thereon, Consumer's Experience is improved well.

Embodiment six

The embodiment of the present invention six provides another PGW 60, referring to Figure 10, and the PGW 60 can include：

At least one processor 1001；At least one communication bus 1002, for realizing the connection between device and being in communication with each other, receiver 1003, transmitter 1004；

Wherein, communication bus 1002 can be industry standard architecture (Industry Standard Architecture, referred to as ISA) bus, external equipment interconnection (Peripheral Component, referred to as PCI) bus or extended industry-standard architecture (Extended Industry Standard Architecture, referred to as EISA) bus etc..The bus can be divided into address bus, data/address bus, controlling bus etc..For ease of representing, only represented in Fig. 9 with a thick line, it is not intended that only one bus or a type of bus.

Processor 1001 is probably a central processing unit (Central Processing Unit, referred to as CPU), either specific integrated circuit (Application Specific Integrated Circuit, referred to as ASIC), or it is arranged to implement one or more integrated circuits of the embodiment of the present invention.

Wherein, receiver 1003, for receiving migration instruction；Wherein, the migration instruction includes needing to carry out the source Proxy Call Session Control Function P-CSCF of load migration mark, transport number amount instruction information；

Processor 1001, for when the receiver 1003 receives the migration instruction, scanning user's context, obtaining access source P-CSCF load；Wherein, the user's context includes the corresponding relation for each loading the P-CSCF accessed with it；

Transmitter 1004, in batches according to scheduled rate, the access source P-CSCF obtained to the processor 1001 load sends P-CSCF address lists respectively；Wherein, the P-CSCF address lists include at least one P-CSCF in addition to source P-CSCF address；

The transmitter 1004 is additionally operable to, when the load number for accessing the source P-CSCF, which meets the migration instruction, to be required, stops sending P-CSCF address lists respectively to the load of the access source P-CSCF.

Further, the migration instruction also includes purpose P-CSCF mark, for indicating the load migration in the source P-CSCF to the purpose P-CSCF；

Further, the transmitter 1004 can be also used for：

The receiver 1003 can be also used for, and receive the IMS PDN foundation requests that first load is sent；

The transmitter 1004 can be also used for, to P-CSCF address lists described in first load feedback.

Optionally, the transmitter 1004 specifically can be used for：

Optionally, the transport number amount instruction information can include：

Need the load number of migration；

Or,

Optionally, the receiver 1003 specifically can be used for：

Receive the migration instruction of keeper's input；

Or,

Optionally, the transmission implement body can be used for：

Or,

Further, the processor 1001 be can be also used for, and the load newly accessed is no longer distributed to the source P-CSCF.

Embodiment seven

The embodiment of the present invention seven provides a kind of S-CSCF 80, referring to Figure 11, and the S-CSCF 80 can include：

At least one processor 1101；At least one communication bus 1102, for realizing the connection between device and being in communication with each other, receiver 1103；

Wherein, communication bus 1102 can be industry standard architecture (Industry Standard Architecture, referred to as ISA) bus, external equipment interconnection (Peripheral Component, referred to as PCI) bus or extended industry-standard architecture (Extended Industry Standard Architecture, referred to as EISA) bus etc..The bus can be divided into address bus, data/address bus, controlling bus etc..For ease of representing, only represented in Figure 10 with a thick line, it is not intended that only one bus or a type of bus.

Processor 1101 is probably a central processing unit (Central Processing Unit, referred to as CPU), either specific integrated circuit (Application Specific Integrated Circuit, referred to as ASIC), or it is arranged to implement one or more integrated circuits of the embodiment of the present invention.

Wherein, receiver 1103, the migration instruction for receiving keeper's input；Wherein, the migration instruction includes needing to carry out the source Proxy Call Session Control Function P-CSCF of load migration mark, transport number amount instruction information；

Processor 1101, for being instructed to the PGW migrations for forwarding the receiver 1103 to receive, for indicating instructions of the PGW according to the migration instruction, load migration is carried out to the source P-CSCF.

Further, the migration instruction can also include purpose P-CSCF mark, for indicating the load migration in the source P-CSCF to the purpose P-CSCF.

Optionally, the transport number amount instruction information can include：

Need the load number of migration；

Or,

Further, the processor 1101 can be also used for, and whether detection access source P-CSCF load number, which meets the migration instruction, requires；

The processor also 1101 is additionally operable to, if the processor 1101 detects and accesses the load number of the source P-CSCF and meet that the migration instruction is required or the receiver 1103 receives the stopping migration instruction of keeper input, the stopping migration instruction is sent to the PGW, for indicating that the PGW stops the load migration to the source P-CSCF.

S-CSCF 80 provided in an embodiment of the present invention, according to the instruction of migration instruction, passes through Migration instruction is sent to PGW, PGW carries out load migration to source P-CSCF, realize the load migration to source P-CSCF according to the instruction of transport number amount instruction information, meets the requirement of migration instruction；Therefore, can be by migrating the intelligent control instructed, it can be very good to improve the equilibrium degree that load is distributed, also each P-CSCF will be correspondingly reduced and the risk overloaded occur, the load that can also will be unable to continue on the P-CSCF (P-CSCF of overload or O＆M) of service is unloaded, avoid P-CSCF overload or O＆M to the damage of the call of load accessed thereon, Consumer's Experience is improved well.

It is apparent to those skilled in the art that, for convenience and simplicity of description, the specific work process of the system, apparatus, and unit of foregoing description may be referred to the corresponding process in preceding method embodiment, will not be repeated here.

In several embodiments provided herein, it should be understood that disclosed system, apparatus and method can be realized by another way.For example, device embodiment described above is only schematical, for example, the division of the unit, it is only a kind of division of logic function, there can be other dividing mode when actually realizing, such as multiple units or component can combine or be desirably integrated into another system, or some features can be ignored, or do not perform.Another, it, by some interfaces, the INDIRECT COUPLING or communication connection of device or unit, can be electrical or other forms that shown or discussed coupling or direct-coupling or communication connection each other, which can be,.

The unit illustrated as separating component can be or may not be physically separate, and the part shown as unit can be or may not be physical location, you can with positioned at a place, or can also be distributed on multiple NEs.Some or all of unit therein can be selected to realize the purpose of this embodiment scheme according to the actual needs.

In addition, each functional unit in each of the invention embodiment can be integrated in a processing unit or the independent physics of unit includes, can also two or more units it is integrated in a unit.Above-mentioned integrated unit can both be realized in the form of hardware, it would however also be possible to employ hardware adds the form of SFU software functional unit to realize.

The above-mentioned integrated unit realized in the form of SFU software functional unit, can be stored in a computer read/write memory medium.Above-mentioned SFU software functional unit is stored in a storage In medium, including some instructions are to cause a computer equipment (can be personal computer, server, or network equipment etc.) to perform the part steps of each embodiment methods described of the invention.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (Read-Only Memory, abbreviation ROM), random access memory (Random Access Memory, abbreviation RAM), magnetic disc or CD etc. are various can be with the medium of store program codes.

Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although the present invention is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It can still modify to the technical scheme described in foregoing embodiments, or carry out equivalent substitution to which part technical characteristic；And these modifications or replacement, the essence of appropriate technical solution is departed from the spirit and scope of various embodiments of the present invention technical scheme.

Claims

A kind of P-CSCF load managements method, it is characterised in that applied to packet data network gateway PGW, methods described includes：

Receive migration instruction；Wherein, the migration instruction includes needing to carry out the source Proxy Call Session Control Function P-CSCF of load migration mark, transport number amount instruction information；

User's context is scanned, access source P-CSCF load is obtained；Wherein, the user's context includes the corresponding relation for each loading the P-CSCF accessed with it；

According to scheduled rate, P-CSCF address lists are sent respectively to the load of the access source P-CSCF in batches；Wherein, the P-CSCF address lists include at least one P-CSCF in addition to source P-CSCF address；

When the load number for accessing the source P-CSCF, which meets the migration instruction, to be required, stop sending P-CSCF address lists respectively to the load of the access source P-CSCF.
According to the method described in claim 1, it is characterised in that the migration instruction also includes purpose P-CSCF mark, for indicating the load migration in the source P-CSCF to the purpose P-CSCF：

The P-CSCF address lists include the address of the purpose P-CSCF, and purpose P-CSCF highest priorities in the P-CSCF address lists.
Method according to claim 1 or 2, it is characterised in that described according to scheduled rate, after sending P-CSCF address lists respectively to the load of the access source P-CSCF in batches, methods described also includes：

If after preset duration, the feedback message that the first load is successfully accessed P-CSCF is not received, network protocol multi-media sub-system IMS grouped data network PDN connection release messages then are sent to the described first load, to indicate that first load disconnects current IMS PDN connections；Wherein, the IMS PDN connection release messages include configured information, and request is set up for indicating that IMS PDN are initiated in first load again at once；First load loads for any one in the load of the PGW transmissions P-CSCF address lists；

Receive the IMS PDN foundation requests that first load is sent；

To P-CSCF address lists described in first load feedback.
Method according to claim any one of 1-3, it is characterised in that described to press According to scheduled rate, P-CSCF address lists are sent respectively to the load of the access source P-CSCF in batches, including：

According to the scheduled rate, in batches into the load of the access source P-CSCF, the load do not conversed sends P-CSCF address lists respectively.
Method according to claim any one of 1-4, it is characterised in that the transport number amount instruction information includes：

Need the load number of migration；

Or,

The load number of migration is needed to account for the ratio of the load total amount accessed on the source P-CSCF.
Method according to claim any one of 1-5, it is characterised in that the reception migration instruction includes：

Receive the migration instruction of keeper's input；

Or,

Receive the migration instruction of service call conversation control function S-CSCF forwardings；Wherein, the migration instruction is inputted by the keeper in the S-CSCF.
Method according to claim any one of 1-6, it is characterised in that described to stop sending P-CSCF address lists respectively to the load of the access source P-CSCF when the load number for accessing the source P-CSCF meets the migration instruction and required, including：

When receiving N number of load and being successfully accessed P-CSCF feedback message, stop sending P-CSCF address lists respectively to access source P-CSCF load；Wherein, the N is the load number that the transport number amount instruction information is indicated；

Or,

When the stopping for receiving keeper's input migrates instruction, stop sending P-CSCF address lists respectively to the load of the access source P-CSCF；

Or,

When the stopping for receiving the S-CSCF forwardings migrates instruction, stop sending P-CSCF address lists respectively to the load of the access source P-CSCF；Wherein, it is described to stop migration instructing being to detect the load number satisfaction for accessing the source P-CSCF by the S-CSCF The migration instruction requires that when sends；Or, it is described to stop migration instructing being keeper's input.
Method according to claim any one of 1-7, it is characterised in that after the reception migration instruction, methods described also includes：

The load newly accessed is no longer distributed to the source P-CSCF.
A kind of P-CSCF load managements method, it is characterised in that applied to service call conversation control function S-CSCF, methods described includes：

Receive the migration instruction of keeper's input；Wherein, the migration instruction includes needing to carry out the source Proxy Call Session Control Function P-CSCF of load migration mark, transport number amount instruction information：

To the packet data network gateway PGW forwardings migration instruction, for indicating instructions of the PGW according to the migration instruction, load migration is carried out to the source P-CSCF.
Method according to claim 9, it is characterised in that the migration instruction also includes purpose P-CSCF mark, for indicating the load migration in the source P-CSCF to the purpose P-CSCF.
Method according to claim 9 or 10, it is characterised in that the transport number amount instruction information includes：

Need the load number of migration；

Or,

The load number of migration is needed to account for the ratio of the load total amount accessed on the source P-CSCF.
Method according to claim any one of 9-11, it is characterised in that after the migration instruction to PGW forwardings, methods described also includes：

The stopping migration instruction that the migration instruction required or received keeper input is met if detecting and accessing the load number of the source P-CSCF, the stopping migration instruction is sent to the PGW, for indicating that the PGW stops the load migration to the source P-CSCF.
A kind of packet data network gateway PGW, it is characterised in that including：

Receiving unit, for receiving migration instruction；Wherein, it is described migration instruction include need into The source Proxy Call Session Control Function P-CSCF of row load migration mark, transport number amount instruction information：

Acquiring unit, for when the receiving unit receives the migration instruction, scanning user's context, obtaining access source P-CSCF load；Wherein, the user's context includes the corresponding relation for each loading the P-CSCF accessed with it；

Transmitting element, in batches according to scheduled rate, the access source P-CSCF obtained to the acquiring unit load sends P-CSCF address lists respectively；Wherein, the P-CSCF address lists include at least one P-CSCF in addition to source P-CSCF address；

The transmitting element is additionally operable to, when the load number for accessing the source P-CSCF, which meets the migration instruction, to be required, stops sending P-CSCF address lists respectively to the load of the access source P-CSCF.
PGW according to claim 13, it is characterised in that the migration instruction also includes purpose P-CSCF mark, for indicating the load migration in the source P-CSCF to the purpose P-CSCF；

The P-CSCF address lists include the address of the purpose P-CSCF, and purpose P-CSCF highest priorities in the P-CSCF address lists.
PGW according to claim 13 or 14, it is characterised in that the transmitting element is additionally operable to：

Described according to scheduled rate, after sending P-CSCF address lists respectively to the load of the access source P-CSCF in batches, if after preset duration, the feedback message that the first load is successfully accessed P-CSCF is not received, network protocol multi-media sub-system IMS grouped data network PDN connection release messages then are sent to the described first load, to indicate that first load disconnects current IMS PDN connections；Wherein, the IMS PDN connection release messages include configured information, and request is set up for indicating that IMS PDN are initiated in first load again at once；First load loads for any one in the load of the PGW transmissions P-CSCF address lists；

The receiving unit is additionally operable to, and receives the IMS PDN foundation requests that first load is sent；

The transmitting element is additionally operable to, to P-CSCF address lists described in first load feedback.
PGW according to claim any one of 13-15, it is characterised in that the transmitting element specifically for：

According to the scheduled rate, in batches into the load of the access source P-CSCF, the load do not conversed sends P-CSCF address lists respectively.
PGW according to claim any one of 13-16, it is characterised in that the transport number amount instruction information includes：

Need the load number of migration；

Or,

The load number of migration is needed to account for the ratio of the load total amount accessed on the source P-CSCF.
PGW according to claim any one of 13-17, it is characterised in that the receiving unit specifically for：

Receive the migration instruction of keeper's input；

Or,

Receive the migration instruction of service call conversation control function S-CSCF forwardings；Wherein, the migration instruction is inputted by the keeper in the S-CSCF.
PGW according to claim any one of 13-18, it is characterised in that the transmitting element specifically for：

When receiving N number of load and being successfully accessed P-CSCF feedback message, stop sending P-CSCF address lists respectively to access source P-CSCF load；Wherein, the N is the load number that the transport number amount instruction information is indicated；

Or,

When the stopping for receiving keeper's input migrates instruction, stop sending P-CSCF address lists respectively to the load of the access source P-CSCF；

Or,

When the stopping for receiving the S-CSCF forwardings migrates instruction, stop sending P-CSCF address lists respectively to the load of the access source P-CSCF；Wherein, the stopping is moved Move instruction be detected by the S-CSCF access source P-CSCF load number meet it is described migration instruct require that when sends；Or, it is described to stop migration instructing being keeper's input.
PGW according to claim any one of 13-19, it is characterised in that the PGW also includes allocation unit, for no longer distributing the load newly accessed to the source P-CSCF.
A kind of service call conversation control function S-CSCF, it is characterised in that including：

Receiving unit, the migration instruction for receiving keeper's input；Wherein, the migration instruction includes needing to carry out the source Proxy Call Session Control Function P-CSCF of load migration mark, transport number amount instruction information；

Retransmission unit, for being instructed to the packet data network gateway PGW migrations for forwarding the receiving unit to receive, for indicating instructions of the PGW according to the migration instruction, load migration is carried out to the source P-CSCF.
S-CSCF according to claim 21, it is characterised in that the migration instruction also includes purpose P-CSCF mark, for indicating the load migration in the source P-CSCF to the purpose P-CSCF.
S-CSCF according to claim 21 or 22, it is characterised in that the transport number amount instruction information includes：

Need the load number of migration；

Or,

The load number of migration is needed to account for the ratio of the load total amount accessed on the source P-CSCF.
S-CSCF according to claim any one of 21-23, it is characterised in that the S-CSCF also includes：

Detection unit, is required for detecting whether access source P-CSCF load number meets the migration instruction；

The retransmission unit is additionally operable to, if the detection unit detects and accesses the load number of the source P-CSCF and meet that the migration instruction is required or the receiving unit receives the stopping migration instruction of keeper input, send the stopping migration to the PGW and refer to Order, for indicating that the PGW stops the load migration to the source P-CSCF.