CN104010318B

CN104010318B - The method and apparatus of transmission services

Info

Publication number: CN104010318B
Application number: CN201310057669.XA
Authority: CN
Inventors: 陶烨; 叶进洲; 刘海洋; 孙晓姬; 孙晓
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2013-02-22
Filing date: 2013-02-22
Publication date: 2018-05-11
Anticipated expiration: 2033-02-22
Also published as: WO2014127637A1; CN104010318A

Abstract

The embodiment provides a kind of method and apparatus of transmission services, this method includes：Mobility management entity MME receives the first abnormality detection result of the first exchange network, and the first abnormality detection result is used to indicate that the first exchange network is abnormal;MME triggers at least part user's equipment initiating updating of tracking area process according to the first abnormality detection result, so that the corresponding at least part business of at least part user's equipment switches to the second exchange network by the first exchange network, wherein the first exchange network is one of Circuit Switched CS network and internet protocol multi-media system IMS network, second exchange network is another in CS networks and IMS network, the business that business is supported for CS networks and IMS network.The embodiment of the present invention can be avoided or reduced causes traffic lost in one of IMS network and CS networks failure.

Description

The method and apparatus of transmission services

Technical field

The present invention relates to the communications field, more particularly, to a kind of method and apparatus of transmission services.

Background technology

In the past few years, once there is a variety of viewpoints, technology and evolution path around LTE voices, and there are four kinds of situations Become possible commercial selection.

The first is circuit switching fall-back（Circuit Switched Fallback, CSFB）Technology.LTE only provides number According to business, when initiating or receiving audio call, circuit switching is fallen back to（Circuit Switching, CS）At domain Reason.CSFB technologies are suitable as IP multimedia systems（IP Multimedia System, IMS）Transition scheme before deployment； Alternatively, can also be used to solve the problems, such as the audio call of LTE user terminal roaming scences, IMS is not disposed in access zone network, Or in the case that IMS roaming agreement is not yet applied, CSFB technologies can provide speech business for the LTE user of roaming.

Second is LTE supports synchronous with voice network（Simultaneous Voice and LTE, SVLTE）Technology.With Family terminal is worked at the same time in LTE and CS modes, the former provides data service, and the latter provides speech business.The third is to use OTT （Over-the-top）Technology, i.e., realized the speech business of LTE by OTT technologies.4th kind be exactly base station LTE voice （Voice Over LTE, VoLTE）Technology, VoLTE are based on IMS.IMS is due to supporting a variety of accesses and abundant multimedia industry Business, becomes the core net standard architecture in full IP epoch.After years of mature development, nowadays IMS has become admittedly Determine the mainstream selection in speech field, and be determined as the standard architecture of mobile voice by 3GPP, GSMA.

In above-mentioned several technical routes, only IMS can be provided with the VoIP voice solution party of QoS guarantee based on LTE Case, it may be said that the VoLTE based on IMS is the inevitable outcome of wireless and core network technology development.

In general, telecom operation chamber of commerce phased deployment voice solution, CSFB and VoLTE schemes can coexist longer Time.CS networks are ripe speeches and short message communication network, and business processing in VoLTE schemes（Voice and short message Business）It is to be based on IMS network, after deploying new mobility, IMS network generally requires a period of time ability stable operation, Therefore, initial stage is disposed in VoLTE networks, if exception occurs in whole IMS network, it will cause traffic lost.

The content of the invention

The embodiment provides a kind of method and apparatus of transmission services, it can avoid or reduce in IMS network Or CS networks occur causing traffic lost during exception.

First aspect, there is provided a kind of method of transmission services, including：Mobility management entity MME receives first and exchanges First abnormality detection result of network, the first abnormality detection result are used to indicate that the first exchange network is abnormal；MME is different according to first Normal detection triggers at least part user's equipment initiating updating of tracking area process, so that at least part user's equipment is corresponding extremely Small part business switches to the second exchange network by the first exchange network, wherein the first exchange network for Circuit Switched CS network and One of internet protocol multi-media system IMS network, the second exchange network be CS networks and IMS network in another, business The business supported for CS networks and IMS network.

With reference to first aspect, in the first possible implementation, if the first abnormality detection result instruction first exchanges Network failure, at least part user equipment are whole user equipmenies under MME, and at least part business is CS networks and IMS network The whole business supported, MME trigger at least part user's equipment initiating updating of tracking area mistake according to the first abnormality detection result Journey, so that the corresponding at least part business of at least part user's equipment switches to the second exchange network by the first exchange network, bag Include：It is unavailable or failure that MME, which sets the state of the first exchange network,；The whole user equipmenies of MME notices re-initiate first with Track area updates TAU processes；After the first TAU processes that whole user equipmenies re-initiate are received, MME is set to whole users Preparation send the first TAU received messages, wherein the first TAU received messages are used to indicate that the first exchange network is unavailable or failure, So as to by least part service switching to the second exchange network.

With reference to the first possible implementation, in second of possible implementation, the method for first aspect is also wrapped Include：MME receives the second abnormality detection result of the first exchange network, and the second abnormality detection result is used to indicate the first exchange network Recover from failure；MME sets the state of the first exchange network to be available or recover from failure；The whole users of MME notices set Preparation plays the 2nd TAU processes；After the 2nd TAU processes that whole user equipmenies are initiated are received, MME is to whole user equipmenies The 2nd TAU received messages are sent, the 2nd TAU received messages are used to indicate the first exchange network to can use or recover from failure, So as to which at least part service switching is returned the first exchange network.

With reference to first aspect, in the third possible implementation, if the first abnormality detection result instruction first exchanges Network over loading, at least part user equipment are certain customers' equipment under MME, and at least part business is CS networks and IMS network The partial service supported, MME trigger at least part user's equipment initiating updating of tracking area mistake according to the first abnormality detection result Journey, so that at least part business switches to the second exchange network by the first exchange network, including：MME sets the first exchange network State for overload；MME is according to the different user equipment of default ratio setting to the first exchange network and the second exchange network Registration；The corresponding certain customers' equipment of MME notification section business re-initiates the first tracing section updating TAU processes；Receiving After the first TAU processes that certain customers' equipment re-initiates, MME sends the first TAU received messages to certain customers' equipment, its In the first TAU received messages be used for indicate the first exchange network for it is unavailable or overload, so as to which partial service is switched to second Exchange network so that different user equipmenies proportionally uses the first exchange network or the second exchange network transmission services.

With reference to the third possible implementation, in the 4th kind of possible implementation, the method for first aspect is also wrapped Include：MME receives the second abnormality detection result of the first exchange network, and the second abnormality detection result is used to indicate the first exchange network Recover from overload；MME sets the state of the first exchange network to recover for overload；MME setting units user equipment is handed over to first Switching network is registered；MME notification sections user equipment initiates the 2nd TAU processes；Receiving the second of the initiation of certain customers' equipment After TAU processes, the 2nd TAU received messages are sent to certain customers' equipment, the 2nd TAU received messages are used to indicate that first exchanges Network is can use or recover from overload, so as to which partial service is switched back into the first exchange network.

With reference to first aspect or in a kind of any of the above described possible implementation, in the 5th kind of possible implementation, Mobility management entity MME receives the first abnormality detection result of the first exchange network, specifically includes：MME receives homing position The information notice request that register/home subscriber server HLR/HSS is sent, information notice request include the first abnormality detection knot Fruit.

With reference to first aspect or in a kind of any of the above described possible implementation, in the 6th kind of possible implementation, Second exchange network is CS networks, and the first exchange network is IMS network, and mobility management entity MME receives the first exchange network The first abnormality detection result, specifically include：MME receives the renewal that the public data network gateway P-GW in IMS network is sent and holds Request is carried, more new bearer request bag contains the first abnormality detection result.

With reference to first aspect or in a kind of any of the above described possible implementation, in the 7th kind of possible implementation, Second exchange network is IMS network, and the first exchange network is CS networks, and mobility management entity MME receives the first exchange network The first abnormality detection result, specifically include：MME receives the information notice request that the media gateway MGW in CS networks is sent, letter Breath notice request includes the first abnormality detection result.

Second aspect, there is provided a kind of method of transmission services, including：Detection entity in first exchange network is to first The exception of exchange network is detected, and obtains the first abnormality detection result, wherein the first abnormality detection result is used to indicate first Exchange network is abnormal；Detect entity and send the first abnormality detection result to mobility management entity MME, so that MME is according to first Abnormality detection result triggers at least part user's equipment initiating updating of tracking area process, so that at least part user's equipment is corresponding At least part business switches to the second exchange network from the first exchange network, wherein the first exchange network is Circuit Switched CS network One of with internet protocol multi-media system IMS network, the second exchange network is another in CS networks and IMS network, industry It is engaged in the business supported for CS networks and IMS network.

With reference to second aspect, in the first possible implementation, detection entity is used for attaching position register/ownership Family server HLR/HSS, detection entity send the first abnormality detection result to MME, including：HLR/HSS sends information to MME and leads to Know request, information notice request includes the first abnormality detection result.

With reference to the first possible implementation of second aspect, in second of possible implementation, second aspect Method further include：In the case where determining the first exchange network failure, HLR/HSS uses at least part user equipment to be called The call routing at family is to the second exchange network.

With reference to the first possible implementation of second aspect, in the third possible implementation, second aspect Method further include：Whether at least part user equipment that HLR/HSS is determined as called subscriber is noted according to the first exchange network Volume；HLR/HSS is registered according to the second exchange network in definite at least part user equipment or not noted according to the first exchange network In the case of volume, using at least part user equipment as the call routing of called subscriber to the second exchange network.

With reference to the first possible implementation of second aspect, in the 4th kind of possible implementation, second aspect Method further include：Whether at least part user equipment that HLR/HSS is determined as called subscriber is noted according to the first exchange network Volume；HLR/HSS is registered or not according to the second network registry in definite at least part user equipment according to the first exchange network In the case of, using at least part user equipment as the call routing of called subscriber to the first exchange network.

With reference to the first possible implementation of second aspect, in the 5th kind of possible implementation, first exchanges Network is IMS network, and the second exchange network is CS networks, and detection entity is the public data network gateway P-GW in IMS network, is examined Survey entity and send the first abnormality detection result to mobility management entity MME, including：P-GW is by gateway S-GW to MME More new bearer request is sent, more new bearer request bag contains the first abnormality detection result, wherein the detection in the first exchange network is real Body is detected the exception of the first exchange network, including：Session Border Controller SBC or generation in P-GW detection IMS networks Whether abnormal manage call session control function P-CSCF entities, wherein in the case of SBC or P-CSCF entity exceptions, first is different Normal testing result indicates that the first exchange network is abnormal.

With reference to second aspect or the 6th kind of possible implementation of second aspect, in the 7th kind of possible implementation In, the method for second aspect further includes：Detection entity is detected the exception of the first exchange network, obtains the second abnormality detection As a result, wherein the second abnormality detection result is used to indicate that the first exchange network recovers from exception；Detect entity and send the to MME Two abnormality detection results.

With reference to second aspect, in the 8th kind of possible implementation, the first exchange network is CS networks, the second switching network Network is IMS network, and detection entity is the media gateway MGW in CS networks, and detection entity sends the to mobility management entity MME One abnormality detection result, including：MGW sends information notice request to MME, and information notice request includes abnormality detection result.

The third aspect, there is provided a kind of method of transmission services, in the case of the first exchange network failure or overload, is used Family equipment receives the notice for re-initiating the first tracing section updating TAU processes that mobility management entity MME is sent；User equipment First tracing section updating process is initiated according to notice；User equipment receives that MME is sent according to the first tracing section updating process One TAU received messages, wherein the first TAU received messages are used to indicate that the first exchange network is unavailable or failure, so as near To the second exchange network, the first exchange network is Circuit Switched CS network and internet protocol multi-media system for small part service switching One of IMS network of uniting, the second exchange network are another in CS networks and IMS network, and business is equal for CS networks and IMS network The business of support.

With reference to the third aspect, in the first possible implementation, the method for the third aspect further includes：User equipment connects Receive the notice for re-initiating the second tracing section updating TAU processes that MME is sent；User equipment is according to re-initiating the second tracking area The notice for updating TAU processes initiates the second tracing section updating process；User equipment receives MME according to the second tracing section updating process The 2nd TAU received messages sent, wherein the 2nd TAU received messages be used to indicating the first exchange network for it is available or from failure or Recover in overload, so as to which at least part service switching is returned the first exchange network.

Fourth aspect, there is provided a kind of method of transmission services, including：Whether the overload condition of detection IMS network exceedes Default threshold value；In the case where the overload condition of IMS network exceedes default threshold value, notice detection entity IMS network overload, IMS network overload is determined according to notice to detect entity.

With reference to fourth aspect, in the first possible implementation, detection entity is public data network gateway P-GW, side Method is performed by the Session Border Controller SBC in IMS network or Proxy Call Session Control Function P-CSCF entities.

With reference to fourth aspect, in second of possible implementation, detection entity is used for attaching position register/ownership Family server HLR/HSS, wherein method are performed by the telecommunication voice application server in IMS network；Alternatively, method is by IMS nets Query call conversation control function I-CSCF or service call conversation control function S-CSCF entities in network are performed；Alternatively, side Method is performed by HLR/HSS.

5th aspect, there is provided a kind of device for being used for transmission business, including：Receiving module, exchanges for receiving first First abnormality detection result of network, the first abnormality detection result are used to indicate that the first exchange network is abnormal；Handover module, is used for At least part user's equipment initiating updating of tracking area process is triggered according to the first abnormality detection result that receiving module receives, so that The corresponding at least part business of at least part user's equipment switches to the second exchange network by the first exchange network, wherein first hands over Switching network is one of Circuit Switched CS network and internet protocol multi-media system IMS network, and the second exchange network is CS networks The business supported for CS networks and IMS network with another in IMS network, business.

With reference to the 5th aspect, in the first possible implementation, if the first abnormality detection result instruction first exchanges Network failure, at least part user equipment are whole user equipmenies under MME, and at least part business is CS networks and IMS network The whole business supported, it is unavailable or failure that handover module, which sets the state of the first exchange network, notifies whole users to set It is standby to re-initiate the first tracing section updating TAU processes, and in the first TAU processes for receiving whole user equipmenies and re-initiating Afterwards, the first TAU received messages are sent to whole user equipmenies, wherein the first TAU received messages are used to indicate the first switching network Network is unavailable or failure, so as to by whole service switchings to the second exchange network.

With reference to the first possible implementation, in second of possible implementation, receiving module also receives first Second abnormality detection result of exchange network, the second abnormality detection result are used to indicate that the first exchange network recovers from failure； Handover module sets the state of the first exchange network, and to can use or recover from failure, wherein device further includes：Sending module, is used The 2nd TAU processes are initiated in the whole user equipmenies of notice；The 2nd TAU mistakes of whole user equipmenies initiations are received in receiving module After journey, the 2nd TAU received messages are sent to whole user equipmenies, the 2nd TAU received messages are used to indicate the first exchange network To can use or recover from failure, so as to which at least part service switching is returned the first exchange network.

With reference to the 5th aspect, in the third possible implementation, if the first abnormality detection result instruction first exchanges Network over loading, at least part user equipment are certain customers' equipment under MME, and at least part business is CS networks and IMS network The partial service supported, it is overload that handover module, which sets the state of the first exchange network, and according to default ratio setting Different user equipmenies is registered to the first exchange network and the second exchange network, notification section user equipment re-initiate first with Track area updates TAU processes, and after the first TAU processes that certain customers' equipment re-initiates are received, MME is set to certain customers Preparation send the first TAU received messages, wherein the first TAU received messages are used to indicate the first exchange network for unavailable or overload, So as to which partial service is switched to the second exchange network so that different user equipmenies proportionally using the first exchange network or Second exchange network transmission services.

With reference to the third possible implementation, in the 4th kind of possible implementation, receiving module also receives first Second abnormality detection result of exchange network, the second abnormality detection result are used to indicate that the first exchange network recovers from overload； Handover module sets the state of the first exchange network to recover for overload；MME setting units user equipment is noted to the first exchange network Volume, wherein device further includes：Sending module, the 2nd TAU processes are initiated for notification section user equipment, and in receiving module After the 2nd TAU processes for receiving the initiation of certain customers' equipment, the 2nd TAU received messages are sent to certain customers' equipment, the Two TAU received messages are used to indicating the first exchange network to be available or recover from overload, so as to which partial service is switched back into the One exchange network.

With reference to the 5th aspect or a kind of any of the above described possible implementation in, in the 5th kind of possible implementation, Asked it is characterized in that, receiving module receives the information notice that attaching position register/home subscriber server HLR/HSS is sent Ask, information notice request includes the first abnormality detection result.

With reference to the 5th aspect or a kind of any of the above described possible implementation in, in the 6th kind of possible implementation, Second exchange network is CS networks, and the first exchange network is IMS network, and receiving module receives the public data network in IMS network The more new bearer request that gateway P-GW is sent, more new bearer request bag contain the first abnormality detection result.

With reference to the 5th aspect or a kind of any of the above described possible implementation in, in the 7th kind of possible implementation, Second exchange network is IMS network, and the first exchange network is CS networks, and receiving module receives the media gateway MGW in CS networks The information notice request of transmission, information notice request include the first abnormality detection result.

6th aspect, there is provided a kind of device of transmission services, including：Detection module, for the first exchange network Exception is detected, and obtains the first abnormality detection result, wherein the first abnormality detection result is used to indicate that the first exchange network is different Often；Sending module, the first abnormality detection result detected triggering is detected at least for being sent to mobility management entity MME Certain customers' equipment initiating updating of tracking area process, so that the corresponding at least part business of at least part user's equipment is handed over from first Switching network switches to the second exchange network, wherein the first exchange network is Circuit Switched CS network and internet protocol multi-media system One of IMS network of uniting, the second exchange network are another in CS networks and IMS network, and business is equal for CS networks and IMS network The business of support.

With reference to the 6th aspect, in the first possible implementation, device is attaching position register/home subscriber clothes Be engaged in device HLR/HSS, and sending module sends information notice request to MME, and information notice request includes the first abnormality detection result.

With reference to the first possible implementation of the 6th aspect, in second of possible implementation, the 6th aspect Device further include：Routing module, in the case where determining the first exchange network failure, being by least part user equipment The call routing of called subscriber is to the second exchange network.

With reference to the first possible implementation of the 6th aspect, in the third possible implementation, the 6th aspect Device further include：Determining module, for whether being determined as at least part user equipment of called subscriber according to the first exchange Network registry；Routing module, for being registered in definite at least part user equipment according to the second exchange network or not according to In the case that one exchange network is registered, using at least part user equipment as the call routing of called subscriber to the second switching network Network.

With reference to the first possible implementation of the 6th aspect, in the 4th kind of possible implementation, the 6th aspect Device further include：Determining module, for whether being determined as at least part user equipment of called subscriber according to the first exchange Network registry；Routing module, for being registered in definite at least part user equipment according to the first exchange network or not according to In the case of two network registries, using at least part user equipment as the call routing of called subscriber to the first exchange network.

With reference to the first possible implementation of the 6th aspect, in the 5th kind of possible implementation, first exchanges Network is IMS network, and the second exchange network is CS networks, and device is the public data network gateway P-GW in IMS network, sends mould Block sends more new bearer request by gateway S-GW to MME, and more new bearer request bag contains the first abnormality detection result, detects Whether the Session Border Controller SBC or Proxy Call Session Control Function P-CSCF entities in module detection IMS network are abnormal, Wherein in the case of SBC or P-CSCF entity exceptions, the first abnormality detection result indicates that the first exchange network is abnormal.

With reference to the 6th aspect or the 6th kind of possible implementation of the 6th aspect, in the 7th kind of possible implementation In, detection module is also detected the exception of the first exchange network, obtains the second abnormality detection result, wherein the second abnormal inspection Result is surveyed to be used to indicate that the first exchange network recovers from exception；Detection module also sends the second abnormality detection result to MME.

With reference to the 6th aspect, in the 8th kind of possible implementation, the first exchange network is CS networks, the second switching network Network is IMS network, and device is the media gateway MGW in CS networks, and sending module sends information notice request to MME, and information is led to Know that request includes the first abnormality detection result.

7th aspect, there is provided a kind of device of transmission services, including：Receiving module, in the event of the first exchange network In the case of barrier or overload, receive mobility management entity MME transmissions re-initiates the logical of the first tracing section updating TAU processes Know；Sending module, the notice for being received according to receiving module initiate the first tracing section updating process；Receiving module is additionally operable to The first TAU received messages that MME is sent according to the first tracing section updating process are received, wherein the first TAU received messages are used to refer to It is unavailable or failure to show the first exchange network, so as to by least part service switching to the second exchange network, the first switching network Network is one of Circuit Switched CS network and internet protocol multi-media system IMS network, and the second exchange network is CS networks and IMS Another in network, the business that business is supported for CS networks and IMS network.

With reference to the 7th aspect, in the first possible implementation, receiving module is additionally operable to receive MME transmissions again Initiate the notice of the second tracing section updating TAU processes；Sending module is additionally operable to basis and re-initiates the second tracing section updating TAU mistakes The notice of journey initiates the second tracing section updating process；Receiving module is additionally operable to reception MME and is sent out according to the second tracing section updating process The 2nd TAU received messages sent, wherein the 2nd TAU received messages are used to indicating the first exchange network to be available or from failure or mistake Recover in load, so as to which at least part service switching is returned the first exchange network.

Eighth aspect, there is provided a kind of device of transmission services, including：Detection module, for detecting the overload of IMS network Whether condition exceedes default threshold value；Notification module, the overload condition for detecting IMS network in detection module exceed default Threshold value in the case of, notice detection entity IMS network overload, IMS network overload is determined to detect entity according to notice.

With reference to eighth aspect, in the first possible implementation, detection entity is public data network gateway P-GW, dress The Session Border Controller SBC or Proxy Call Session Control Function P-CSCF entities being set in IMS network.

With reference to eighth aspect, in second of possible implementation, detection entity is used for attaching position register/ownership Family server HLR/HSS, wherein device are the telecommunication voice application server in IMS network；Alternatively, device is in IMS network Query call conversation control function I-CSCF or service call conversation control function S-CSCF entities；Or device is HLR/ HSS。

The embodiment of the present invention can by mobility management entity when detecting one of IMS network and CS networks failure, Re-initiate tracing section updating process by triggering at least part user's equipment, by least part user equipment is corresponding, IMS and The service switching that CS is supported jointly is handled to another in IMS network and CS networks, so as to avoid or reduce in IMS Traffic lost is caused when one of network and CS networks failure.

Brief description of the drawings

In order to illustrate the technical solution of the embodiments of the present invention more clearly, it will make below to required in the embodiment of the present invention Attached drawing is briefly described, it should be apparent that, drawings described below is only some embodiments of the present invention, for For those of ordinary skill in the art, without creative efforts, other can also be obtained according to these attached drawings Attached drawing.

Fig. 1 is the configuration diagram of the communication system 100 of one embodiment of the present of invention.

Fig. 2 is the indicative flowchart of the method for transmission services according to an embodiment of the invention.

Fig. 3 is the indicative flowchart of the method for transmission services according to another embodiment of the present invention.

Fig. 4 is the indicative flowchart of the method for transmission services according to still another embodiment of the invention.

Fig. 5 is the indicative flowchart of the method for the transmission services of another embodiment according to the present invention.

Fig. 6 is the indicative flowchart of the process of the transmission services of one embodiment of the present of invention.

Fig. 7 is the indicative flowchart of the CSFB calling procedures of the embodiment of the present invention one.

Fig. 8 is the indicative flowchart of the CSFB called flows of the embodiment of the present invention.

Fig. 9 is the indicative flowchart of the process of the transmission services of another embodiment of the present invention.

Figure 10 is that VoLTE overloads according to an embodiment of the invention handle the schematic of called flow according to VoLTE modes Flow chart.

Figure 11 is that VoLTE overloads according to an embodiment of the invention handle the schematic of called flow according to VoLTE modes Flow chart.

Figure 12 is the indicative flowchart of the process of the transmission services of another embodiment of the present invention.

Figure 13 is the indicative flowchart of the process of the transmission services of another embodiment of the present invention.

Figure 14 is the structure diagram of the device of transmission services according to an embodiment of the invention.

Figure 15 is the structure diagram of the device of transmission services according to another embodiment of the present invention.

Figure 16 is the structure diagram of the device of transmission services according to still another embodiment of the invention.

Figure 17 is the structure diagram of the device of the transmission services of another embodiment according to the present invention.

Figure 18 is the structure diagram of the device of transmission services according to an embodiment of the invention.

Figure 19 is the structure diagram of the device of transmission services according to another embodiment of the present invention.

Figure 20 is the structure diagram of the device of transmission services according to still another embodiment of the invention.

Figure 21 is the structure diagram of the device of the transmission services of another embodiment according to the present invention.

Embodiment

Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete Site preparation describes, it is clear that described embodiment is part of the embodiment of the present invention, instead of all the embodiments.Based on this hair Embodiment in bright, the every other implementation that those of ordinary skill in the art are obtained without creative efforts Example, belongs to the scope of protection of the invention.

It is to be understood that technical scheme can be applied to various communication systems, such as：GSM（Global System Of Mobile communication, global system for mobile telecommunications）System, CDMA（Code Division Multiple Access, CDMA）System, WCDMA（, Wideband Code Division Multiple Access, wideband code division multiple access）System System, GPRS（General Packet Radio Service, General Packet Radio Service）、LTE（Long Term Evolution, Long Term Evolution）System, LTE-A（Advanced long term evolution, advanced Long Term Evolution）System System, UMTS（Universal Mobile Telecommunication System, Universal Mobile Communication System）Deng the present invention Embodiment does not limit, but for convenience of description, the embodiment of the present invention will be illustrated by taking LTE network as an example.

The embodiment of the present invention can be used for the wireless network of different standards.Radio Access Network can in different systems Including different network elements.For example, the network element of Radio Access Network includes eNB in LTE and LTE-A（ENodeB, evolved base station）, The network element of Radio Access Network includes RNC in WCDMA（Radio Network Controller, radio network controller）With NodeB, similarly, WiMax（Worldwide Interoperability for Microwave Access, Worldwide Interoperability for Microwave are mutual Couple into）The scheme similar with the embodiment of the present invention can also be used etc. other wireless networks, simply the correlation in base station system Module may be different, and the embodiment of the present invention does not limit, but for convenience of description, following embodiments will by taking eNodeB as an example into Row explanation.

It should also be understood that in embodiments of the present invention, user equipment（UE, User Equipment）Including but not limited to move Platform（MS, Mobile Station）, mobile terminal（Mobile Terminal）, mobile phone（Mobile Telephone）, hand Machine（handset）And portable equipment（portable equipment）Deng the user's equipment can be through wireless access network（RAN, Radio Access Network）Communicate with one or more core nets, for example, user equipment can be mobile phone （Or it is " honeycomb " phone）, there is the computer etc. of wireless communication function, user equipment can also be portable, pocket, Hand-held, built-in computer or vehicle-mounted mobile device.

In order to avoid due to CS networks or IMS network exception（For example, failure or overload etc.）Cause mobile service unavailable, , can be with conventional CS network or IMS starts flow-control mechanism and causes mobile service to lose when avoiding the IMS network from overloading Using MSC ponds（POOL）Etc. the superfluous calamity and load sharing that scheme realizes MSC, and in the ims network can use N+1 schemes and IMS ponds scheme realizes the superfluous calamity and load sharing of each network element in IMS.However, the scheme that can be coexisted in CSFB and VoLTE schemes In, if distinguishing respective configuring redundancy equipment in each network, the cost of system can be increased.

The embodiment of the present invention is proposed realizes the side of superfluous calamity and load sharing mutually between CS networks and IMS network Case.

The communication system 100 of the embodiment of the present invention is the communication system of CSFB technologies and VoLTE technology co-existences, wherein CS Domain（Or network）160 network element can include mobile switching centre（Mobile Switch Center, MSC）161 and MGW162, Support CSFB functions.The network element of IMS domain can include call session control function（Call Session Control Function, CSCF131）, AS132, Media Gateway Control Function（Media Gateway Control Function, MGCF） 133rd, Session Border Controller（Session Border Controller, SBC）Or proxy CSCF（Proxy-CSCF, P- CSCF）134.EPC networks 120 include MME121, S-GW（Serving Gateway, gateway）/ P-GW122 and PCRF, Support VoLTE functions.In addition, communication system 140 can also include HLR/HSS140.LTE user terminals 110 can be according to CSFB Mode is to CS network registries, will pass through the CS domains transmission business such as voice and/or short message, or can be according to VoLTE modes Registered to IMS network, will pass through the IMS domain transmission business such as voice and/or short message.

Fig. 2 is the indicative flowchart of the method for transmission services according to an embodiment of the invention.The embodiment of Fig. 2 Realized by the MME of Fig. 1, including herein below.

210, mobility management entity MME receive the first abnormality detection result of the first exchange network, the first abnormality detection As a result it is used to indicate that the first exchange network is abnormal.

According to an embodiment of the invention, the unusual conditions such as failure or the overload of exchange network can be included extremely.It is specific and Speech, at least one network element failure that exchange network failure can refer to exchange network cause whole exchange network failure, so that Exchange network cannot normally provide business.Exchange network overload can refer to the CPU usage of some equipment of exchange network, calling Success rate, QoS detections etc. parameter exceed normal scope, for example, exceeding default threshold value, so that exchange network cannot It is normal that business is provided.

220, MME trigger at least part user's equipment initiating updating of tracking area process according to the first abnormality detection result, with The corresponding at least part business of at least part user's equipment is set to switch to the second exchange network by the first exchange network, wherein first Exchange network is one of Circuit Switched CS network and internet protocol multi-media system IMS network, and the second exchange network is CS nets Another in network and IMS network, the business that business is supported for CS networks and IMS network.

It is for example, abnormal in the IMS network for possessing VoLTE functions（For example, failure or overload）, so that VoLTE dysfunctions In the case of, MME can receive the abnormality detection result of instruction IMS network exception from detection entity, and by triggering UE weights New initiating updating of tracking area process is by least part business（For example, the business corresponding at least part user's equipment）By IMS nets Network carries out business processing and switches to by CS networks progress business processing, i.e., switches to use from using VoLTE mode processing business CSFB mode processing business.Conversely, possessing the CS Network Abnormals of CSFB functions, so that in the case of CSFB dysfunctions, MME The abnormality detection result of instruction CS Network Abnormals can be received, and tracing section updating mistake is re-initiated by triggering user equipment Journey is by least part business（For example, the business corresponding at least part user's equipment）Business processing is carried out by CS networks to switch to Business processing is carried out by IMS network, i.e., handling industry from use CSFB modes switches to using business VoLTE mode processing business.

The business that CS networks and IMS network are supported can refer to the CS networks for possessing CSFB functions and possess VoIMS work( The voice that the IMS network of energy can be supported（voice）, video（video）And/or short message service etc..In the first exchange network During failure, MME can be handled the corresponding service switching of whole user equipmenies under MME to the second exchange network, First exchange network overload when, MME can by the corresponding service switching of certain customers' equipment under MME to the second exchange network into Row processing, and the business for retaining other parts is handled in the first exchange network.

According to an embodiment of the invention, if the first abnormality detection result indicates the first exchange network failure, at least partially by Family equipment is whole user equipmenies under MME, whole business that at least part business is supported for CS networks and IMS network, its In in 220, MME set the first exchange network state be unavailable or failure；MME notifies at least part user equipment again Initiate the first tracing section updating TAU processes；After the first TAU processes that at least part user's equipment re-initiates are received, MME sends the first TAU received messages at least part user equipment, wherein the first TAU received messages are used to indicate that first exchanges Network is unavailable or failure, so as to by least part service switching to the second exchange network.

For example, the IMS voices instruction supported based on PS sessions can be included in the first TAU received messages（IMS Voice over PS session supported Indication）Cell, in the first exchange network failure, which can be set For False.

For example, MME can re-initiate TAU processes by following process notifying user equipment：1）Globally unique is interim Mark（Globally Unique Temporary Identity, GUTI）It can be carried in reassignment process, the wherein notice New GUTI（New GUTI）With invalid TA lists（TAList）, TAU is re-initiated to trigger UE；（2）EPS attachment removals （detach）Process, the wherein notice carry reattachment request（re-attach required）Instruction, is sent out again with triggering UE Play TAU.

For example, have the function of CSFB CS networks and possess VoLTE functions IMS network support speech business and/or Short message service, by taking IMS network breaks down as an example, MME is notified complete under its management when definite IMS network breaks down Portion's user equipment re-initiates the first tracing section updating TAU processes.Due to MME by the state of IMS network be arranged to it is unavailable or Failure, therefore, whole user equipmenies will be in a manner of CSBF to CS network registries, so as to will be handled originally by IMS network under MME The speech business and/or short message service of the user of business is switched to by CS network processes.In this way, the embodiment of the present invention Failover plays the role of superfluous calamity, avoids in IMS network failure due to that can not provide speech business and/or short message Business and cause traffic lost.

Alternatively, further included as another embodiment, the method for Fig. 2：MME receives the second abnormal inspection of the first exchange network Survey as a result, the second abnormality detection result is used to indicate that the first exchange network recovers from failure；MME sets the first exchange network State is available or recovers from failure；The whole user equipmenies of MME notices initiate the 2nd TAU processes；Receiving whole users After the 2nd TAU processes that equipment is initiated, MME sends the 2nd TAU received messages to whole user equipmenies, and the 2nd TAU receives to disappear Breath is used to indicate the first exchange network to can use or recover from failure, so as to which at least part service switching is returned the first switching network Network.

For example, the IMS voices instruction supported based on PS sessions can be included in the 2nd TAU received messages（IMS Voice over PS session supported Indication）Cell, in the first exchange network fault recovery, which can be with It is arranged to True.

For example, CS networks and IMS network support speech business and/or short message service, broken down with IMS network extensive Exemplified by multiple, MME notifies its whole user equipment under managing to re-initiate first when definite IMS network breaks down recovery Tracing section updating TAU processes.Since the state of the first exchange network is available or fault recovery by MME, whole users set It is standby to be registered in a manner of VoLTE to IMS network, so that the voice of the user of CS network processes business will be passed through under MME originally Business and/or short message service are switched to be handled by IMS network.In time will so in the IMS network fault recovery of failure Service switching is to IMS network processing, so as to use IMS network to provide the business of high quality to the user in time.

According to an embodiment of the invention, if the first abnormality detection result indicates the first exchange network overload, at least partially by Family equipment is certain customers' equipment under MME, the partial service that at least part business is supported for CS networks and IMS network, its In in 220, MME set the first exchange network state for overload；MME is according to the different user equipment of default ratio setting Registered to the first exchange network and the second exchange network；MME notification section user equipmenies re-initiate the first tracing section updating TAU Process；After the first TAU processes that certain customers' equipment re-initiates are received, MME sends first to certain customers' equipment TAU received messages, wherein the first TAU received messages are used to indicate the first exchange network for unavailable or overload, so as to by part Service switching is to the second exchange network so that different user equipmenies proportionally uses the first exchange network or the second switching network Network transmission services.

MME can set user equipment to be noted to CS network registries in a manner of CSBF or to IMS network in a manner of VoLTE Volume.

For example, by taking overload occurs in IMS network as an example, MME can notify its management when definite IMS network is overloaded Under certain customers' equipment re-initiate the first tracing section updating TAU processes.Since MME is different according to default ratio setting User equipment is registered to the first exchange network and the second exchange network, i.e. MME sets above-mentioned certain customers' equipment to be handed over according to second Switching network is registered, and another part user equipment is still registered to the first exchange network, and therefore, above-mentioned certain customers' equipment will be with CSBF modes are to CS network registries, so as to will pass through the speech business of the certain customers of IMS network processing business under MME originally And/or short message service is switched to by CS network processes.When being overloaded due to the first exchange network, MME can be by originally Second exchange network is switched to by a part of user equipment of the first exchange network transmission services, so as to play load sharing Effect, avoid due to IMS overload and cause traffic lost.

Alternatively, further included as another embodiment, the method for Fig. 2：MME receives the second abnormal inspection of the first exchange network Survey as a result, the second abnormality detection result is used to indicate that the first exchange network recovers from overload；MME sets the first exchange network State is recovered for overload；MME setting units user equipment is registered to the first exchange network；MME notification sections user equipment is initiated 2nd TAU processes；After the 2nd TAU processes of certain customers' equipment initiation are received, second is sent to certain customers' equipment TAU received messages, the 2nd TAU received messages are used to indicating the first exchange network to be available or recover from overload, so as to by portion Separate service switches back into the first exchange network.

For example, CS networks and IMS network support speech business and/or short message service, it is extensive overload occur with IMS network Exemplified by multiple, MME notifies its whole user equipment under managing to re-initiate first when overload recovery occurs in definite IMS network Tracing section updating TAU processes.Due to MME by the state of the first exchange network to can use or overload recovery, whole users set It is standby to be registered in a manner of VoLTE to IMS network, so that the voice industry of the user of CS network processes business will be passed through under MME originally Business and/or short message service are switched to and handled by IMS network.So in the IMS network fault recovery of failure in time by industry Business switches to IMS network processing, so as to use IMS network to provide the business of high quality to the user in time.

According to an embodiment of the invention, in 210, MME receives attaching position register/home subscriber server HLR/ The information notice request that HSS is sent, information notice request include the first abnormality detection result.

For example, information notice request can be the Info-Notify-Reqeust message of extension, wherein carrying IMS network State cell or network C S state cell, for indicating exchange network failure（failure）, fault recovery（recovery）, mistake Carry（overload）, overload recover（resume）Etc. abnormality detection result.Alternatively, MME can also be to HLR/HSS return informations Push-notification-answer.For example, the information push-notification-answer can be the Info-Notify-Answer message of extension.Info-Notify- Reqeust message and Info-Notify-Answer message can be sent by S6a/S6d interfaces.

According to an embodiment of the invention, the second exchange network is CS networks, and the first exchange network is IMS network, wherein In 210, MME receives the more new bearer request that the public data network gateway P-GW in IMS network is sent, and more new bearer request bag contains First abnormality detection result.

For example, MME receives the UPDATE that the public data network gateway P-GW in IMS network passes through the S-GW extensions sent BEARER Request message, the Private Extension in the UPDATE BEARER Request message of the extension are included Exchange network failure（For example, IMS Failure or CS Failure）Instruction or exchange network overload（For example, IMS Overload）Instruction.The UPDATE BEARER Request message of the extension can be sent to by P-GW by S5/S8 interfaces The UPDATE BEARER Request message of extension can be sent to MME by S-GW, S-GW by S11 interfaces.

According to an embodiment of the invention, the second exchange network is IMS network, and the first exchange network is CS networks, wherein In 210, MME receives the information notice request that the media gateway MGW in CS networks is sent, and information notice request is abnormal comprising first Testing result.

Fig. 3 is the indicative flowchart of the method for transmission services according to another embodiment of the present invention.The embodiment of Fig. 3 Performed by the P-GW or HLR/HSS of Fig. 1, corresponding with the embodiment of Fig. 2, details are not described herein.

310, the detection entity in the first exchange network is detected the exception of the first exchange network, and it is abnormal to obtain first Testing result, wherein the first abnormality detection result is used to indicate that the first exchange network is abnormal.

320, detection entity sends the first abnormality detection result to mobility management entity MME, so that MME is different according to first Normal detection triggers at least part user's equipment initiating updating of tracking area process, so that at least part user's equipment is corresponding extremely Small part business switches to the second exchange network from the first exchange network, wherein the first exchange network for Circuit Switched CS network and One of internet protocol multi-media system IMS network, the second exchange network be CS networks and IMS network in another, business The business supported for CS networks and IMS network.

According to an embodiment of the invention, it is attaching position register/home subscriber server HLR/HSS to detect entity, In 320, HLR/HSS sends information notice request to MME, and information notice request includes the first abnormality detection result.

Alternatively, further included as another embodiment, the method for Fig. 3：In the case where determining the first exchange network failure, HLR/HSS by least part user equipment for called subscriber call routing to the second exchange network.

Alternatively, further included as another embodiment, the method for Fig. 3：HLR/HSS is determined as at least portion of called subscriber Divide whether user equipment is registered according to the first exchange network；HLR/HSS is exchanged in definite at least part user equipment according to second Network registry or not according to the first exchange network register in the case of, using at least part user equipment exhaling as called subscriber Cry and route to the second exchange network.

Alternatively, further included as another embodiment, the method for Fig. 3：HLR/HSS is determined as at least portion of called subscriber Divide whether user equipment is registered according to the first exchange network；HLR/HSS is exchanged in definite at least part user equipment according to first Network registry or not according to the second network registry in the case of, the calling road using at least part user equipment as called subscriber By to the first exchange network.

According to an embodiment of the invention, the first exchange network is IMS network, and the second exchange network is CS networks, and detection is real Body is the public data network gateway P-GW in IMS network, and in 320, P-GW sends renewal to MME by gateway S-GW and holds Request is carried, more new bearer request bag contains the first abnormality detection result, wherein, in 330, the session in P-GW detection IMS networks Whether boarder controller SBC or Proxy Call Session Control Function P-CSCF entities are abnormal, wherein different in SBC or P-CSCF entities In the case of often, the first abnormality detection result indicates that the first exchange network is abnormal.

For example, after P-GW intercepts the SIPINFO message for middle P-CSCF entities or the SBC exception for carrying IMS network, parsing The message, judges that SBC (P-CSCF) overloads, and extended in S5/S8 interfaces by more new bearer request（Update bearer Request）Message is by IMS overload notifications to S-GW.

Alternatively, as another embodiment, further include：The method of Fig. 3 further includes：Entity is detected to the first exchange network Exception be detected, obtain the second abnormality detection result, wherein the second abnormality detection result be used for indicate the first exchange network from Recover in exception；Detect entity and send the second abnormality detection result to MME.

The embodiment of the present invention, the first exchange network are CS networks, and the second exchange network is IMS network, and detection entity is Media gateway MGW in CS networks, in 320, MGW sends information notice request to MME, and information notice request is different comprising first Normal testing result.

Fig. 4 is the indicative flowchart of the method for transmission services according to still another embodiment of the invention.The embodiment of Fig. 4 Performed by the user equipment of Fig. 1, corresponding with the embodiment of Fig. 2, details are not described herein.

410, in the case of the first exchange network failure or overload, user equipment receives mobility management entity MME hairs That send re-initiates the notice of the first tracing section updating TAU processes.

420, user equipment initiates the first tracing section updating process according to notice.

430, user equipment receives the first TAU received messages that MME is sent according to the first tracing section updating process, wherein the One TAU received messages are used to indicate that the first exchange network is unavailable or failure, so as to by least part service switching to second Exchange network, the first exchange network are one of Circuit Switched CS network and internet protocol multi-media system IMS network, and second hands over Switching network is another in CS networks and IMS network, the business that business is supported for CS networks and IMS network.

Alternatively, further included as another embodiment, the method for Fig. 4：What user equipment received that MME sends re-initiates the The notice of two tracing section updating TAU processes；User equipment is initiated according to the notice for the second tracing section updating TAU processes that re-initiate Second tracing section updating process；User equipment receives the 2nd TAU that MME is sent according to the second tracing section updating process and receives to disappear Breath, wherein the 2nd TAU received messages are used to indicate the first exchange network to can use or recover from failure or overload, so as near The first exchange network is returned in small part service switching.

Fig. 5 is the indicative flowchart of the method for the transmission services of another embodiment according to the present invention.The embodiment of Fig. 5 Performed by SBC, P-CSCF, S-CSCF or I-CSCF of Fig. 1, corresponding with the method for Fig. 2 and Fig. 3, details are not described herein.

510, whether the overload condition for detecting IMS network exceedes default threshold value.

520, in the case where the overload condition of IMS network exceedes default threshold value, notice detection entity IMS network mistake Carry, IMS network overload is determined according to notice to detect entity.

For example, some entity in IMS network is by detecting its CPU usage, call successful rate, QoS detections etc. ginseng It is at least one in number, judge whether IMS overloads, and will determine that result notifies to give detection entity by expansion interface.This hair The method of the judgement overload of bright embodiment can include：1）Judge whether the CPU usage of the entity exceedes certain threshold values, CPU usage determines IMS overloads in the case of exceeding some threshold value；2）By monitoring VoLTE call successful rates, can count Whether it is less than certain threshold values to VoLTE call successful rates, IMS mistakes is determined in the case where VoLTE call successful rates are less than certain threshold values Carry.

The embodiment of the present invention, mobility management entity is when detecting one of IMS network and CS networks failure, Ke Yitong Cross triggering at least part user's equipment and re-initiate tracing section updating process, at least part business that IMS and CS are supported jointly Another being switched in IMS network and CS networks is handled, so as to avoid or reduce in one of IMS network and CS networks Traffic lost is caused during failure.

According to an embodiment of the invention, method of the entity for public data network gateway P-GW, Fig. 5 is detected by IMS network Session Border Controller SBC or Proxy Call Session Control Function P-CSCF entities perform.

For example, in notice detection entity IMS network overload, SBC or P-CSCF can pass through expansion interface（Such as SIP INFO）Notify P-GW IMS networks overload.Alternatively, P-GW returns to 200OK after notice is received to SBC or P-CSCF.

According to an embodiment of the invention, it is attaching position register/home subscriber server HLR/HSS to detect entity, its The method of middle Fig. 5 is performed by the telecommunication voice application server in IMS network.

For example, in notice detection entity IMS network overload, telecommunication voice application server notifies request will by information IMS network overload notification is to HLR/HSS.Alternatively, HLR/HSS is to telecommunication voice application server return information push-notification-answer.

According to an embodiment of the invention, it is attaching position register/home subscriber server HLR/HSS, Fig. 5 to detect entity Method by the query call conversation control function I-CSCF in IMS network or service call conversation control function S-CSCF entities Perform；Alternatively, the method for Fig. 5 is performed by HLR/HSS.

For example, in notice detection entity IMS network overload, I-CSCF or S-CSCF are asked IMS by information notice Network over loading is notified to HLR/HSS.Alternatively, HLR/HSS is to I-CSCF or S-CSCF return information push-notification-answer.

For example, HLR/HSS may determine that the received User-Data-Request from TAS within the unit interval（UDR） Or User-Data-Answer（UDA）Whether the number of message is more than some threshold values, then and when the threshold value is more than the threshold value Determine that IMS overloads.

Although it is to be understood that be illustrated in above-described embodiment by taking IMS network is overloaded as an example, for CS network over loading, Similar method detection CS network over loading can be used.

Fig. 6 is the indicative flowchart of the process of the transmission services of one embodiment of the present of invention.Fig. 6's is embodied as Fig. 2 To the example of the embodiment of Fig. 5.

In the present embodiment, the scene of VoLTE failures is described, that is, detects the IMS network failure of carrying VoLTE, and And business processing will be carried out by IMS network and will be switched to by CS networks progress business processing, i.e., using CSFB mode processing business.This Embodiment is detected the failure of IMS network using fault detection logic entity or network element, which can be in HLR/ Realized on HSS or P-GW.HLR/HSS for fault detect either P-GW can VoLTE is unavailable or IMS network not Available notification is to MME.MME sets VoLTE or the unavailable instruction of IMS network, and passes through globally unique temporary mark （Globally Unique Temporary Identity, GUTI）Reassignment process or EPS detach detachment process lead to Know that UE re-initiates TAU, that is, indicate that UE initiates joint TAU（For example, Combined TAU with IMSI attach or Combined TAU）Process, and subsequently use CSFB mode processing business.Comprise the following steps that.

605, HLR/HSS detection IMS fault conditions.For example, HLR/HSS is detected（Monitor）Taken to telecommunication voice application Business device（Telephony Application Server, TAS）Each signaling link (for example, TDM links or IP links) All failures, and continue for some time.

610, HLR/HSS detection IMS fault conditions.For example, HLR/HSS detects each signaling of I-CSCF or S-CSCF Link (for example, IP links) all failures, and continuing for some time.

It is to be understood that step 610 is the alternative solution of step 605.

615, HLR/HSS judge IMS network failure according to testing result, and are notified by information（Info-Notify）Disappear Cease IMS failures（IMS Failure）Notify to MME.Based on 3GPP29.272 standards, the Info-Notify message of extension is such as Shown in table 1 below and table 2.

Table 1 is directed to order-code value of S6a/S6d Info-Notify

Table 2Info-NotifyRequest

620, MME to HLR/HSS return information push-notification-answer（Info-NotifyAnswer）Message.Info-Notify disappears Breath is as shown in table 1 below and table 2.

Table 3Info-NotifyAnswer

625, P-GW detection IMS fault conditions.For example, P-GW passes through ICMP loopbacks（echo）/ ICMP is responded （Response）Message, i.e., explore (Packet Internet Grope, PING) mechanism detection SBC (P- using the Internet packets CSCF).Detect the whole failures of the SBC (P-CSCF) being connected with P-GW, and continue for some time.

630, P-GW detect all SBC (P-CSCF) failure, in the more new bearer request that S5/S8 interfaces pass through extension （Update bearer Request）Message is by IMS failure notifications to S-GW.

Based on 3GPP29.274, extension renewal bearing request message is as shown in table 4 below and table 5（For the sake of clarity, only It illustrate only the content of Private Extension cells）.Private Extension are by coding shown in table 5.Private Extension includes IMS failures（IMS Failure）Instruction.

The cell of table 4Update Bearer Request

Table 5Private Extension

It is to be understood that as long as HLR/HSS or P-GW only have one to detect that IMS failures are set up, that is, think IMS failures.

635, the S-GW more new bearer requests for passing through extension in S11 interfaces（Update Bearer Request）Message will IMS failure notifications are to MME.Based on 3GPP29.274, the renewal bearing request message of extension is referring to table 4 and table 5.

640, MME set VoIMS unavailable, and return to the response of more new bearer to S-GW（Update Bearer Response）.

645, S-GW return to the response of more new bearer to P-GW.

650, MME can notify UE to re-initiate TAU by following flow：

（1) process is reassigned by carrying out GUTI, reassigns and order in GUTI（GUTIReallocation Command） New GUTI is carried in message（New GUTI）With invalid TA lists（Invalid TA List）, triggering UE initiation TAU, below Step is described by taking GUTI reassignment processes as an example.

（2）EPS detachment process carries attach request again（re-attach required）Instruction message, triggering UE hairs Play TAU.

655, UE return to GUTI to MME reassigns completion（GUTI Reallocation Complete）Message.

660, UE initiate TAU processes to MME immediately.

665, MME, which return to TAU, receives（TAU Accept）Message, wherein TAU receive（TAUAccept）Support in message IMS voices instruction based on PS sessions（IMS Voice over PS session supported Indication）Cell is set It is set to False.

670, UE receive TAU Accept message, judge the IMS voices based on PS sessions according to TAU received messages（IMS Voice over PS session）It is unavailable, network TAU request messages are concurrently played, TAU requests are sent to MME（TAU Request）Message, to indicate united EPS/IMSI TAU flows, parameter instruction UE therein possesses CS fallings（CS Fallback）Ability.

675, MME processing TAU requests.

680, MME transmission SGsAP-LOCATION-UPDATE-REQUEST message include new position to VLR, the message Area identifies（LocationArea Identity, LAI）, temporary mobile subscriber identity（Temporary Mobile Subscriber Identity, IMSI）, MME titles（MME name）With location updating type（Location Update Type）Etc. parameter, wherein MM titles are the domain names of MME.

685, VLR storage MME information, and create the SGs interface conjunctionns with the user under MME.VLR according to user information and Location area information, initiates the position update flow to HLR.

690, VLR return to SGsAP-LOCATION-UPDATE-ACCEPT message to MME, if VLR supports TMSI to divide again Match somebody with somebody, which includes parameter LAI and TMSI；If VLR does not support TMSI to reassign, message include parameter LAI and IMSI。

695, MME carry out the follow-up business processing procedure of TAU.

After IMS failures, user registers according to CSFB modes, then follow-up business processing is handled according to CSFB modes.

710, UE initiate CS Fallback voice service requests.

720, MME send S1-AP request messages（For example, S1-AP UE CONTEXT MODIFICATION REQUEST disappear Breath）To eNodeB, which includes CS and falls designator after rise（CS Fallback Indicator）.The message indicates eNodeB, UE Because CS Fallback business needs to fall back to UTRAN/GERAN.

730, eNodeB requirement UE start the cell measurement of system, and obtain the measurement report that UE is reported, and determine to redirect Target system cells.Then the specific radio configuration information of goal systems, and the RRC connections discharged are sent to UE.

740, UE access target system cells, the service request in initiation CS domains（CM Service Request）.

750, if the MSC Server registered when MSC Server and UE the attachment EPS networks of target system cells ownership Difference, then when the MSC Server receive the service request of UE, due to the information without the UE, can take implicit location to update Flow, receives user's request.

If MSC server does not support implicit location to update, and MSC server does not have user data（Service MSC services Device is different from the MSC server that EPS/IMSI is registered）, then refuse the user service request.

If the service request of MSC Server refusal users can cause UE to initiate a CS domains position update flow.

760, CS domain audio call Establishing process.

Calling subscribe source can have following three kinds of situations：

（1）From CS/PSTN（Public Switched Telephone Network, Public Switched Telephone Network） The VoLTE user of the calling subscriber calls failure IMS network of network（Registered according to CSFB）.

（2）From the VoLTE user of the calling subscriber calls failure IMS network of other IMS networks（Noted according to CSFB Volume）, when the intercommunication of the first two IMS network is generally by CS network switches, then caller IMS network can be out by MGCF, then It is routed to GMSC.

（3）From the VoLTE user of the calling subscriber calls failure IMS network of other IMS networks（Noted according to CSFB Volume）If the intercommunication of two IMS networks is realized by IBCF/IBGF, due to called IMS network failure, it is therefore desirable to IBCF Main standby route is configured, i.e., master is routed to IMS failures, can be routed to CS using route stand-by, then be routed to GMSC.

810, GMSC（Gateway Mobile Switching Center, Gateway Mobile Switching Center）Receive identity knowledge Not and Access Management Access（Identity andAccess Management, IAM）Incoming message.

820, GMSC send SRI to HLR/HSS（Send Routing Information, it is called to send routing information）.

830, HLR/HSS according to IMS failures are judged in embodiment in Fig. 6, then for being called exhaling for VoLTE user Cry according to CS flow processings, for example, directly acquiring MSRN（Mobile Station Roaming Number, mobile station roaming number Code）GMSC is returned to, routes calls to CS networks, and no longer call anchoring to IMS domain processing.

840, MSC/VLR servers receive IAM incoming messages.

850, MSC/VLR servers send SGsAP-PAGING-REQUEST according to existing SGs associations and MME information Message includes IMSI, TMSI, service indicator, LAC etc. to MME, the message.

860, MME send paging（Paging）Message is to eNodeB.ENodeB initiates the Paging flows eated dishes without rice or wine.

870, UE establish connection and send the service request of extension（Extended Service Request）Message is given MME。

880, MME transmission SGsAP-SERVICE-REQUEST message give MSC/VLR servers.MSC server receives this Message, no longer retransmits paging request message to MME.To avoid in call-connection process, the caller stand-by period is long, MSC/VLR Server receives the SGs business request informations for including Idle state instruction, first notifies caller, calls just in handshaking procedure.

890, MME, which send initial UE context, establishes（Initial UE Context Setup）Message, should to eNodeB Message includes CS Fallback designators.The message indicates that eNodeB, UE need to fall back to UTRAN/GERAN because of CSFB business.

892, UE are switched to UTRAN/GERAN from E-UTRAN.

894, with the corresponding interface establishment of connection, UE returns page response（Paging Response）Message or position Renewal request message is put to MSC server.

After 896, MSC/VLR receive the page response of UE, CS connections are established.

Fig. 9 is the indicative flowchart of the process of the transmission services of another embodiment of the present invention.Fig. 9's is embodied as Fig. 2 To the example of the embodiment of Fig. 5.

The present embodiment describes the scene of VoLTE overloads, will be certain in the case where detecting the IMS overloads of carrying VoLTE The business processing of ratio is switched to carries out business processing by CS networks, i.e. certain customers use VoLTE mode transmission services, other User uses CSFB mode transmission services.The present embodiment using overload detection logic entity or network element to the failure of IMS network into Row detection, the logic entity can be realized on HLR/HSS or P-GW., can for the HLR/HSS or P-GW of overload detection By VoLTE modes overload notification to MME, MME proportionally carries out terminal the TAU of VoLTE/CSFB modes, i.e., using CSFB Carry out VoLTE Traffic Distributions.HLR/HSS detection IMS overloads or P-GW detection IMS overloads, as long as thering is a detection to set up, i.e., Think that IMS overloads.

905, TAS report IMS to overload by Sh interface to HLR/HSS.

For example, notified by information（Info-Notify）Message overloads IMS（Overlaod）Notify HLR/HSS.It is based on 3GPP29.328/29.329 the Info-Notify message of extension is as follows：

Table 6 is directed to Info-Notify orders-code value of Sh

Command name	Abbreviation	Code
			Info-Notify-Request	INR	350
Info-Notify-Answer	INA	350

Wherein message content definition is referring to table 2 and table 3.

910, HLR/HSS return information push-notification-answer（Info-NotifyAnswer）Message.

915, CSCF report IMS to overload by Cx/Dx interfaces, and by Info-Notify message by IMS Overlaod is notified to HLR/HSS.Based on 3GPP29.228/29.229, the Info-Notify of extension is as follows.

Table7 is directed to Info-Notify orders-code value of Cx/Dx

Wherein message content definition is referring to table 2 and table 3.

920, HLR/HSS to I/S-CSCF return information push-notification-answer（Info-Notify Answer）Message.

It is to be understood that step 915 and 920 is step 905 and 910 alternative steps.

925, HLR/HSS judge IMS overload, and by Info-Notify message by IMS overload notifications to MME.It is based on 3GPP29.272, the message definition are defined referring to table 2 and table 3 referring to table 1, message content.

930, MME to HLR/HSS return information push-notification-answer（Info-NotifyAnswer）Message.

935, P-GW detection SBC (P-CSCF) overload conditions.SBC（P-CSCF）Detect overload（For example, pass through SBC's It is at least one in CPU usage, call successful rate, QoS detections etc. parameter）, pass through expansion interface（For example, SIP INFO） Notify to P-GW.The method for judging overload is specific as follows.

1）Judge whether CPU usage exceedes certain threshold values, IMS is determined in the case where CPU usage exceedes some threshold value Overload.

2）By monitoring VoLTE call successful rates, SBC can count to obtain whether VoLTE call successful rates are less than certain valve Value, IMS overloads are determined in the case where VoLTE call successful rates are less than certain threshold values.

2）By monitoring IP Qos, SBC can be based on RTCP（RTP Control Protocol, RTP Control Protocol）With The Qos that calling sampling statistics obtain certain LTE cell call is less than certain threshold values.

Specific message body is as follows.

940, P-GW return to 200OK as the response to SIP INFO to SBC (P-CSCF)；

After 945, P-GW intercept SIP INFO messages, the message is parsed, judges that SBC (P-CSCF) overloads, in S5/S8 interfaces Pass through the more new bearer request of extension（Update bearer Request）Message is by IMS overload notifications to S-GW.It is based on 3GPP29.274, the message of extension is referring to table 4 and table 5.

It is subsequently the normal process of current LTE/EPC/VoLTE registrations.

950, S-GW in S11 interfaces by the renewal bearing request message of extension by IMS overload notifications to MME.It is based on 3GPP29.274, the message of extension is referring to table 4 and table 5.

955, MME set VoIMS to overload, and return to the response of more new bearer to S-GW（Update Bearer Response） Message.

960, S-GW return to renewal bearing response message to P-GW.

After 965, IMS overloads, MME sets user proportionally to carry out VoLTE modes/CSFB modes and registers.

970, follow-up business processing is handled according to VoLTE modes/CSFB modes respectively according to the situation of user's registration.

During user initiates caller according to VoLTE modes, UE by the bearer path of eNodeB/S-GW/P-GW, INVITE message is delivered to IMS network, for example, being sent to P-CSCF.SBC (P-CSCF) handles INVITE message, and forwards To S-CSCF.S-CSCF triggers TAS by INVITE message and handles calling service.TAS has been handled after calling service INVITE S-CSCF is returned to continue to route.User according to CSFB modes initiate caller process may refer to Fig. 7 embodiment description, This will not be repeated here.

In the present embodiment, IMS overloads so that VoLTE loads are shared by CSFB, the implementation of CSFB called flows and Fig. 8 Example is similar, and details are not described herein.In contrast to the embodiment of FIG. 8 in the present embodiment, if HLR/HSS judges current use Family without VoLTE/SRVCC register (not supporting IMS-Voice-Over-PS-Sessions), then the calling of VoLTE user according to CS flow processings.For example, directly acquiring MSRN returns to GMSC, no longer call anchoring to IMS domain processing.

Calling subscribe source and called subscriber's relation can include following several.

（1）From the VoLTE user of the calling subscriber calls overload IMS network of CS/PSTN networks（Noted according to VoLTE Volume）, referring to the flow of Figure 10.

（2）From the VoLTE user of the calling subscriber calls overload IMS network of other IMS networks（Noted according to VoLTE Volume）, when the intercommunication of the first two IMS network is generally by CS network switches, then caller IMS network can be out by MGCF, then GMSC is routed to, referring to the flow of Figure 10.

（3）From the VoLTE user of the calling subscriber calls overload IMS network of other IMS networks, if two IMS The intercommunication of network may refer to the flow of FIG. 11 below by IBCF/IBGF.

1010, GMSC receive IAM incoming messages.

1020, GMSC send SRI to HLR/HSS.

1030, HLR/HSS judge that active user is that VoLTE/SRVCC registrations (support IMS-Voice-Over-PS- Sessions), then the calling of VoLTE user is according to VoLTE flow processings, for example, returning to grappling data (T-CSI) gives GMSC.

1040, GMSC to TAS（For example, Anchor AS）Send IDP（Initial DP）, to carry out intelligent trigger.

1050, Anchor AS return to IMRN numbers to GMSC by the number of changing.

1060, GMSC route the call to IMS processing according to new IMRN numbers.

It may include on calling subscribe source and called subscriber's relation following several.

（1）From the VoLTE user of the calling subscriber calls overload IMS network of CS/PSTN networks（Noted according to VoLTE Volume）, then called flow is exactly the situation of this scene description（That is the slave CS of Figure 10 anchors to the subsequent scenario of IMS callings）.

（2）From the VoLTE user of the calling subscriber calls overload IMS network of other IMS networks（Noted according to VoLTE Volume）, when the intercommunication of the first two IMS network is generally by CS network switches, then caller IMS network can be out by MGCF, then It is routed to GMSC（That is Figure 10 anchors to the subsequent scenario of IMS callings from CS）.

（3）From the VoLTE user of the calling subscriber calls overload IMS network of other IMS networks（Noted according to VoLTE Volume）If the intercommunication of two IMS networks is realized by IBCF/IBGF, called flow is exactly the situation of this scene description.

（4）From the VoLTE user of the calling subscriber calls overload IMS network of other IMS networks（Noted according to CSFB Volume）If the intercommunication of two IMS networks is realized by IBCF/IBGF, called flow is exactly the situation of this scene description.

1105, callee side I/S-CSCF receives the INVITE message of Incoming.

1110, S-CSCF send INVITE to TAS.

1115, TAS start called access domain selection flow inquiry T-ADS（Terminating ADS, termination input field choosing Select）To determine called subscriber in which network insertion.

1120, HLR/HSS pass through IDR（Insert Subscriber Data-Request, are inserted into request of data）Message T-ADS inquiries are sent to MME.

1125, MME return to IDA（Insert Subscriber Data Answer, are inserted into request of data）Message carries T- ADS results.

1130, HLR/HSS pass through PSI（Provide Subscriber Information, there is provided user information）Message T-ADS inquiries are sent to SGSN.

1135, SGSN, which return to PSI_ACK message, carries T-ADS results.

1140, HLR/HSS pass through UDA（User-Data-Answer, user data requests）Message returns to T-ADS inquiry knots Fruit is to TAS.

1145 to 1150, TAS determine active user in IMS domain according to T-ADS, in IMS domain terminating call.

1155 to 1180, TAS determine active user in CS domains according to T-ADS, in CS domains terminating call.

The present embodiment describes, VoLTE fault recovery scenes, the IMS fault recoveries of carrying VoLTE is detected, at business Reason returns VoLTE modes from CS network switchings.The present embodiment using fault recovery detection logic entity or network element to IMS network into Row detection, the logic entity can be realized on HLR/HSS or P-GW.HLR/HSS and P-GW for fault recovery detection By VoLTE (Voice Over LTE) available notification to MME.MME sets VoLTE to use instruction, and is reassigned by GUTI Journey or the grouping system of evolution（Evolved Packet System, EPS）Attachment removal（detach）Process notice UE is sent out again TAU is played, then subsequently uses VoLTE mode processing business.HLR/HSS detects IMS fault recoveries and P-GW detections IMS failures are extensive It is multiple, that is, think IMS fault recoveries.

1205, HLR/HSS detection IMS fault recovery conditions.For example, HLR/HSS detects signaling link (the TDM chains of TAS Road or IP links) all recover.

1210, HLR/HSS detect that the signaling link (IP links) of I/S-CSCF all recovers.

It is to be understood that step 1210 is the alternative solution of step 1205.

1215, HLR/HSS judge that IMS judges IMS network fault recovery according to testing result, and pass through（Info- Notify）IMS recovers（IMS Recovery）Message informing is to MME.Based on 3GPP29.272, the message and parameter of extension referring to Table 1, table 2 and table 3.

1220, MME return information push-notification-answer（Info-Notify Answer）Message.

1225th, P-GW detects IMS fault conditions.For example, PGW passes through ICMP echo/ICMPResponse, that is, Ping mechanism Whether detection SBC (P-CSCF) failure is recovered, and detects the whole fault recoveries of SBC (P-CSCF) of connection.

1230, the PGW more new bearer requests for passing through extension in S5/S8 interfaces（Update bearer Request）Message IMS fault recoveries are notified to S-GW.Based on 3GPP29.274, the message of extension is referring to table 4 and table 5.

1235, S-GW notify that MMEIMS failures are extensive in S11 interfaces by Update bearer Request extension of message It is multiple.Based on 3GPP29.274, the message of extension is referring to table 4 and table 5.

1240, MME set VoIMS fault recoveries or available, and return to the response of more new bearer to S-GW（Update Bearer Response）.

1245, S-GW return to the response of more new bearer to P-GW（Update Bearer Response）.

1250, MME can notify UE to re-initiate TAU by following flow.

（1）GUTI reassigns process, carries New GUTI and invalid TA List, and triggering UE initiates TAU, following steps It is described by taking GUTI reassignment processes as an example.

1255, UE, which return to GUTI, reassigns completion（GUTI Reallocation Complete）Message.

1260, UE initiate TAU processes to MME immediately.

1265, MME, which return to TAU, receives（TAU Accept）Message, wherein TAU receive（TAU Accept）Branch in message Hold the IMS voices instruction based on PS sessions（IMS Voice over PS session supported Indication）Cell It is arranged to True.

1270, UE receive TAU Accept message, judge IMS Voice over PS according to TAU received messages Session can use, and initiate network TAU requests, and TAU Request message is sent to MME.Wherein parameter supports SRVCC abilities （capability）, voice domain prioritizing selection（Voice domain preference）For PS（Packet Switched, packet Exchange）.

1275, MME processing TAU requests, carry out the follow-up processing of TAU, are registered according to VoLTE/SRVCC modes.

1280, MME send TAU received messages to UE.

The present embodiment describes the scene that VoLTE overloads are recovered, and detects that the IMS overloads of carrying VoLTE are recovered, at business Reason switches back into VoLTE modes.The present embodiment recovers detection logic entity using overload and IMS network is detected, and the logic is real Body can be realized on HLR/HSS or P-GW.VoLTE is overloaded recovery by the HLR/HSS and P-GW for recovering detection for overloading Notify to MME.The terminal that MME adheres to CSFB, reassigns process by GUTI or EPS detach processes notifies UE again TAU is initiated, and sets VoLTE to use instruction, then subsequently uses VoLTE mode processing business.

After IMS fault recoveries, user registers according to VoLTE modes, then follow-up business processing is handled according to VoLTE modes , follow-up business processing handled as normal process according to VoLTE modes, and details are not described herein.

HLR/HSS detection IMS overloads are recovered and/or P-GW detection IMS overloads are recovered, that is, think that IMS overloads are recovered.

1305th, TAS reports IMS overload occur and recovers by Sh interface to HLR/HSS.

For example, notified by information（Info-Notify）Message recovers IMS（Resume）Notify to HLR/HSS.It is based on 3GPP29.328/29.329, the Info-Notify message and parameter of extension are referring to table 4, table 2 and table 3.

1310, HLR/HSS return information push-notification-answer（Info-Notify Answer）Message.

1315, CSCF report IMS overload occur by Cx/Dx interfaces recovers, and by Info-Notify message by IMS Resume is notified to HLR/HSS.Based on 3GPP29.228/29.229, the Info-Notify message and parameter of extension referring to table 5, Table 2 and table 3.

1320, HLR/HSS returning responses.

1325, HLR/HSS judge that IMS overloads are recovered, and are notified IMSResume to MME by Info-Notify message. Based on 3GPP29.272, message definition is referring to the Info-Notify message and parameter of extension referring to table 6, table 2 and table 3.

1330, MME to HLR/HSS return information push-notification-answer（Info-NotifyAnswer）Message.

1335th, P-GW detects SBC (P-CSCF) overload recovery conditions.SBC detects that overload is recovered（Such as accounted for by CPU With rate/call successful rate/QoS detections etc.）, pass through expansion interface（Such as SIP INFO）Notify PGW.Judge what overload was recovered Method is specific as follows.

1）Judge whether CPU usage is less than certain threshold values, in the case where CPU usage is less than some threshold value, determine IMS Overload is recovered.

2）By monitoring VoLTE call successful rates, SBC can count to obtain whether VoLTE call successful rates are higher than certain valve Value, in the case where VoLTE call successful rates are higher than certain threshold values, determines that IMS overloads are recovered.

2）By monitoring IP Qos, SBC can be based on RTCP（RTP Control Protocol, RTP Control Protocol）With The Qos that calling sampling statistics obtain certain LTE cell call is higher than certain threshold values, is higher than certain threshold values in the Qos of certain LTE cell call In the case of, determine that IMS overloads are recovered.

Specific message body is as follows.

1340, PGW return to responses of the 200OK as SIP INFO to SBC (P-CSCF)；

After 1345, PGW intercept SIP INFO messages, the message is parsed, judges that SBC (P-CSCF) overloads are recovered, in S5/S8 Interface passes through more new bearer request（Update bearer Request）Extension of message notice S-GW IMS overloads are recovered.It is based on 3GPP29.274, the message of extension is referring to table 4 and table 5.

It is subsequently the normal process of current LTE/EPC/VoLTE registrations.

1350, S-GW are overloaded in S11 interfaces by the renewal bearing request message message informing MMEIMS of extension.It is based on 3GPP29.274, the message of extension is referring to table 4 and table 5；

1355,.MME sets VoIMS to overload recovery, and returns to renewal bearing response message to S-GW.

1360, S-GW return to renewal bearing response message to P-GW.

After 1365, IMS overloads are recovered, MME progressively registers user according to VoLTE modes, then follow-up business processing is pressed Handled according to VoLTE modes.

Unanimously, details are not described herein for subsequent step and 1250 to 1280.

Figure 14 is the structure diagram of the device 1400 of transmission services according to an embodiment of the invention.Transmission services Device 1400 include receiving module 1410 and handover module 1420.

Receiving module 1410 receives the first abnormality detection result of the first exchange network, and the first abnormality detection result is used to refer to Show the first exchange network exception.The first abnormality detection result that handover module 1420 is received according to receiving module 1410 triggers at least Certain customers' equipment initiating updating of tracking area process, so that the corresponding at least part business of at least part user's equipment is handed over by first Switching network switches to the second exchange network, wherein the first exchange network is Circuit Switched CS network and internet protocol multi-media system One of IMS network of uniting, the second exchange network are another in CS networks and IMS network, and business is equal for CS networks and IMS network The business of support.

According to an embodiment of the invention, if the first abnormality detection result indicates the first exchange network failure, at least partially by Family equipment is whole user equipmenies under MME, and whole business that at least part business is CS networks and IMS network is supported, cut Change the mold block 1420 set the first exchange network state be unavailable or failure, notice whole user equipmenies re-initiate first with Track area updates TAU processes, and after the first TAU processes that whole user equipmenies re-initiate are received, to whole users Equipment sends the first TAU received messages, wherein the first TAU received messages are used to indicate the first exchange network for unavailable or event Barrier, so as to by least part service switching to the second exchange network.

Alternatively, as another embodiment, receiving module also receives the second abnormality detection result of the first exchange network, the Two abnormality detection results are used to indicate that the first exchange network recovers from failure；Handover module sets the state of the first exchange network To can use or recover from failure, device 1400 further includes：

Sending module 1430, for notifying whole user equipmenies to initiate the 2nd TAU processes, and receives in receiving module After the 2nd TAU processes that whole user equipmenies are initiated, the 2nd TAU received messages are sent to whole user equipmenies, the 2nd TAU connects It is used to indicate that the first exchange network to can use or from failure recover, is handed over so as to which at least part service switching is returned first by message Switching network.

According to an embodiment of the invention, if the first abnormality detection result indicates the first exchange network overload, at least partially by Family equipment is certain customers' equipment under MME, and the partial service that at least part business is CS networks and IMS network is supported, cuts Change the mold block 1420 set the first exchange network state for overload, and according to the different user equipment of default ratio setting to First exchange network and the registration of the second exchange network, notification section user equipment re-initiate the first tracing section updating TAU processes, After the first TAU processes that certain customers' equipment re-initiates are received, MME sends the first TAU to certain customers' equipment and connects By message, wherein the first TAU received messages are used to indicate the first exchange network for unavailable or overload, so as to which partial service is cut Shift to the second exchange network so that different user equipmenies is proportionally transmitted using the first exchange network or the second exchange network Business.

Alternatively, as another embodiment, receiving module 1410 also receives the second abnormality detection knot of the first exchange network Fruit, the second abnormality detection result are used to indicate that the first exchange network recovers from overload；Handover module 1420 sets first to exchange The state of network is recovered for overload；MME setting units user equipment is registered to the first exchange network, and wherein device 1400 also wraps Include：

Sending module 1430, the 2nd TAU processes are initiated for notification section user equipment, and are received in receiving module After the 2nd TAU processes that certain customers' equipment is initiated, the 2nd TAU received messages are sent to certain customers' equipment, the 2nd TAU connects It is used to indicate the first exchange network by message to can use or recover from overload, so as to which partial service is switched back into the first switching network Network.

According to an embodiment of the invention, receiving module 1410 receives attaching position register/home subscriber server HLR/ The information notice request that HSS is sent, information notice request include the first abnormality detection result.

According to an embodiment of the invention, the second exchange network is CS networks, and the first exchange network is IMS network, receives mould Block 1410 receives the more new bearer request that the public data network gateway P-GW in IMS network is sent, and more new bearer request bag is containing the One abnormality detection result.

According to an embodiment of the invention, the second exchange network is IMS network, and the first exchange network is CS networks, receives mould Block 1410 receives the information notice that the media gateway MGW in CS networks is sent and asks, and the request of information notice includes the first abnormal inspection Survey result.

The method that the operation of the unit of device 1400 and function may be referred to above-mentioned Fig. 2, in order to avoid repeating, herein Repeat no more.

Figure 15 is the structure diagram of the device 1500 of transmission services according to another embodiment of the present invention.Transmission services Device 1500 include detection module 1510 and sending module 1520.

Detection module 1510 is detected the exception of the first exchange network, obtains the first abnormality detection result, wherein the One abnormality detection result is used to indicate that the first exchange network is abnormal.Sending module 1520 sends to mobility management entity MME and examines The first abnormality detection result detected is measured, so that MME triggers at least part user's equipment according to the first abnormality detection result Initiating updating of tracking area process, so that the corresponding at least part business of at least part user's equipment is switched to from the first exchange network Second exchange network, wherein the first exchange network for Circuit Switched CS network and internet protocol multi-media system IMS network it One, the second exchange network is another in CS networks and IMS network, the business that business is supported for CS networks and IMS network.

According to an embodiment of the invention, device 1500 is attaching position register/home subscriber server HLR/HSS, hair Module 1520 is sent to send information notice request to MME, information notice request includes the first abnormality detection result.

Alternatively, further included as another embodiment, device 1500：Routing module 1530.

Routing module 1530 is used in the case where determining the first exchange network failure, by least part user equipment to be called The call routing at family is to the second exchange network.

Alternatively, further included as another embodiment, device 1500：Determining module 1540 and routing module 1530.

Whether at least part user equipment that determining module 1540 is determined as called subscriber is noted according to the first exchange network Volume.Routing module 1530 is registered according to the second exchange network in definite at least part user equipment or not according to the first switching network In the case that network is registered, using at least part user equipment as the call routing of called subscriber to the second exchange network.

Whether at least part user equipment that determining module 1540 is determined as called subscriber is noted according to the first exchange network Volume.Routing module 1530 is registered according to the first exchange network in definite at least part user equipment or not noted according to the second network In the case of volume, using at least part user equipment as the call routing of called subscriber to the first exchange network.

According to an embodiment of the invention, the first exchange network is IMS network, and the second exchange network is CS networks, device 1500 be the public data network gateway P-GW in IMS network, and sending module 1520 is sent by gateway S-GW to MME to be updated Carrying request, more new bearer request bag contain the first abnormality detection result, and detection module 1510 detects the session border in IMS network Whether controller SBC or Proxy Call Session Control Function P-CSCF entities are abnormal, wherein abnormal in SBC or P-CSCF entities In the case of, the first abnormality detection result indicates that the first exchange network is abnormal.

According to an embodiment of the invention, detection module 1510 is also detected the exception of the first exchange network, obtains Two abnormality detection results, wherein the second abnormality detection result is used to indicate that the first exchange network recovers from exception；Detection module 1510 also send the second abnormality detection result to MME.

According to an embodiment of the invention, the first exchange network is CS networks, and the second exchange network is IMS network, device 1500 be the media gateway MGW in CS networks, and sending module 1520 sends information notice request, information notice request bag to MME Containing the first abnormality detection result.

The method that the operation of the unit of device 1500 and function may be referred to above-mentioned Fig. 3, in order to avoid repeating, herein Repeat no more.

Figure 16 is the structure diagram of the device 1600 of transmission services according to still another embodiment of the invention.Transmission services Device 1600 include receiving module 1610 and sending module 1620.

Receiving module 1610 receives mobility management entity MME hairs in the case of the first exchange network failure or overload That send re-initiates the notice of the first tracing section updating TAU processes；Sending module 1620 is received according to receiving module 1610 Notice initiates the first tracing section updating process；Receiving module 1610 is additionally operable to reception MME and is sent out according to the first tracing section updating process The first TAU received messages sent, wherein the first TAU received messages are used to indicate that the first exchange network is unavailable or failure, with Just it is at least part service switching to the second exchange network, the first exchange network is more for Circuit Switched CS network and Internet protocol One of media system IMS network, the second exchange network are another in CS networks and IMS network, and business is CS networks and IMS The business that network is supported.

Alternatively, as another embodiment, receiving module 1610 be additionally operable to receive MME send re-initiate the second tracking Area updates the notice of TAU processes；Sending module 1620 is additionally operable to the notice according to the second tracing section updating TAU processes that re-initiate Initiate the second tracing section updating process；Receiving module 1610 is additionally operable to receive what MME was sent according to the second tracing section updating process 2nd TAU received messages, wherein the 2nd TAU received messages are used to indicate that the first exchange network is available or from failure or overload Recover, so as to which at least part service switching is returned the first exchange network.

The method that the operation of the unit of device 1600 and function may be referred to above-mentioned Fig. 4, in order to avoid repeating, herein Repeat no more.

Figure 17 is the structure diagram of the device 1700 of the transmission services of another embodiment according to the present invention.Transmission services Device 1700 include detection module 1710 and notification module 1720.

Whether detection module 1710, the overload condition for detecting IMS network exceed default threshold value.Notification module 1720, in the case that the overload condition for detecting IMS network in detection module 1710 exceedes default threshold value, notice detection Entity IMS network is overloaded, and IMS network overload is determined according to notice to detect entity.

According to an embodiment of the invention, detection entity is public data network gateway P-GW, and device 1700 is in IMS network Session Border Controller SBC or Proxy Call Session Control Function P-CSCF entities.

According to an embodiment of the invention, it is attaching position register/home subscriber server HLR/HSS to detect entity, its Middle device 1700 is the telecommunication voice application server in IMS network；Alternatively, device 1700 is the query call in IMS network Conversation control function I-CSCF or service call conversation control function S-CSCF entities；Alternatively, device 1700 is HLR/HSS.

The method that the operation of the unit of device 1700 and function may be referred to above-mentioned Fig. 5, in order to avoid repeating, herein Repeat no more.

Figure 18 is the structure diagram of the device 1800 of transmission services according to an embodiment of the invention.Transmission services Device 1800 include receiver 1810, processor 1820, memory 1830 and communication bus 1840.

Receiver 1810 receives the first abnormality detection result of the first exchange network, and the first abnormality detection result is used to indicate First exchange network is abnormal.Processor 1820 calls the code of the storage of memory 1830 by communication bus 1840, is connect with basis Receive the first abnormality detection result that device 1810 receives and trigger at least part user's equipment initiating updating of tracking area process, so that at least The corresponding at least part business of certain customers' equipment switches to the second exchange network by the first exchange network, wherein the first switching network Network is one of Circuit Switched CS network and internet protocol multi-media system IMS network, and the second exchange network is CS networks and IMS Another in network, the business that business is supported for CS networks and IMS network.

According to an embodiment of the invention, if the first abnormality detection result indicates the first exchange network failure, at least partially by Family equipment is whole user equipmenies under MME, and whole business that at least part business is CS networks and IMS network is supported, locate It is unavailable or failure to manage device 1820 and set the state of the first exchange network, notifies whole user equipmenies to re-initiate the first tracking Area updates TAU processes, and after the first TAU processes that whole user equipmenies re-initiate are received, is set to whole users Preparation send the first TAU received messages, wherein the first TAU received messages are used to indicate that the first exchange network is unavailable or failure, So as to by least part service switching to the second exchange network.

Alternatively, as another embodiment, receiver also receives the second abnormality detection result of the first exchange network, and second Abnormality detection result is used to indicate that the first exchange network recovers from failure；Processor sets the state of the first exchange network to be can With or from recovering in failure, wherein device 1800 further includes：Transmitter 1850, for notifying whole user equipmenies to initiate second TAU processes；After the 2nd TAU processes that receiver receives that whole user equipmenies are initiated, the is sent to whole user equipmenies Two TAU received messages, the 2nd TAU received messages are used to indicating the first exchange network to be available or recover from failure, so as to will The first exchange network is returned at least part service switching.

According to an embodiment of the invention, if the first abnormality detection result indicates the first exchange network overload, at least partially by Family equipment is certain customers' equipment under MME, and the partial service that at least part business is CS networks and IMS network is supported, locates It is overload to manage device 1820 and set the state of the first exchange network, and according to the different user equipment of default ratio setting to the One exchange network and the registration of the second exchange network, notification section user equipment re-initiate the first tracing section updating TAU processes, After receiving the first TAU processes that certain customers' equipment re-initiates, MME sends the first TAU to certain customers' equipment and receives Message, wherein the first TAU received messages are used to indicate the first exchange network for unavailable or overload, so as to which partial service is switched To the second exchange network so that different user equipmenies is proportionally using the first exchange network or the second exchange network transmission industry Business.

Alternatively, as another embodiment, receiver 1810 also receives the second abnormality detection result of the first exchange network, Second abnormality detection result is used to indicate that the first exchange network recovers from overload；Processor 1820 sets the first exchange network State is recovered for overload；MME setting units user equipment is registered to the first exchange network, and wherein device 1800 further includes：Send Device 1850, the 2nd TAU processes are initiated for notification section user equipment, and receive certain customers' equipment hair in receiving module After the 2nd TAU processes risen, the 2nd TAU received messages are sent to certain customers' equipment, the 2nd TAU received messages are used to indicate First exchange network is can use or recover from overload, so as to which partial service is switched back into the first exchange network.

According to an embodiment of the invention, receiver 1810 receives attaching position register/home subscriber server HLR/HSS The information notice request of transmission, information notice request include the first abnormality detection result.

According to an embodiment of the invention, the second exchange network is CS networks, and the first exchange network is IMS network, receiver 1810 receive the more new bearer request that the public data network gateway P-GW in IMS network is sent, and more new bearer request bag contains first Abnormality detection result.

According to an embodiment of the invention, the second exchange network is IMS network, and the first exchange network is CS networks, receiver 1810 receive the information notice request that the media gateway MGW in CS networks is sent, and information notice request includes the first abnormality detection As a result.

The method that the operation of the unit of device 1800 and function may be referred to above-mentioned Fig. 2, in order to avoid repeating, herein Repeat no more.

Figure 19 is the structure diagram of the device 1900 of transmission services according to another embodiment of the present invention.Transmission services Device 1900 include processor 1910, transmitter 1920, memory 1930 and communication bus 1940.

Processor 1910 calls the code in memory 1930 by communication bus 1940, with to the different of the first exchange network Often it is detected, obtains the first abnormality detection result, wherein the first abnormality detection result is used to indicate that the first exchange network is abnormal. Transmitter 1920 sends to mobility management entity MME and detects the first abnormality detection result for detecting, so that MME is according to the One abnormality detection result triggers at least part user's equipment initiating updating of tracking area process, so that at least part user equipment corresponds to At least part business switch to the second exchange network from the first exchange network, wherein the first exchange network is circuit switching (CS) net One of network and internet protocol multi-media system IMS network, the second exchange network are another in CS networks and IMS network, The business that business is CS networks and IMS network is supported.

According to an embodiment of the invention, device 1900 is attaching position register/home subscriber server HLR/HSS, hair Device 1920 is sent to send information notice request to MME, information notice request includes the first abnormality detection result.

Alternatively, it is near also in the case where determining the first exchange network failure as another embodiment, processor 1910 Small part user equipment for called subscriber call routing to the second exchange network.

Alternatively, as another embodiment, processor 1910 is also determined as at least part user's equipment of called subscriber Whether register, and registered according to the second exchange network in definite at least part user equipment or not according to the first exchange network According to the first exchange network register in the case of, using at least part user equipment as called subscriber call routing to second friendship Switching network.

Alternatively, as another embodiment, processor 1910 is also determined as at least part user's equipment of called subscriber Whether register, and registered according to the first exchange network in definite at least part user equipment or not according to the first exchange network In the case of according to the second network registry, using at least part user equipment as the call routing of called subscriber to the first switching network Network.

According to an embodiment of the invention, the first exchange network is IMS network, and the second exchange network is CS networks, device 1900 be the public data network gateway P-GW in IMS network, and transmitter 1920 sends renewal to MME by gateway S-GW and holds Request is carried, more new bearer request bag contains the first abnormality detection result, and processor 1910 detects the session-orient E-Service in IMS network Whether device SBC or Proxy Call Session Control Function P-CSCF entities are abnormal, wherein in the situation of SBC or P-CSCF entities exception Under, the first abnormality detection result indicates that the first exchange network is abnormal.

According to an embodiment of the invention, processor 1910 is also detected the exception of the first exchange network, obtains second Abnormality detection result, wherein the second abnormality detection result is used to indicate that the first exchange network recovers from exception；Transmitter 1920 Also the second abnormality detection result is sent to MME.

According to an embodiment of the invention, the first exchange network is CS networks, and the second exchange network is IMS network, device 1900 be the media gateway MGW in CS networks, and transmitter 1920 sends information notice request to MME, and information notice request includes First abnormality detection result.

The method that the operation of the unit of device 1900 and function may be referred to above-mentioned Fig. 3, in order to avoid repeating, herein Repeat no more.

Figure 20 is the structure diagram of the device 2000 of transmission services according to still another embodiment of the invention.Transmission services Device 2000 include receiver 2010, transmitter 2050, processor 2010 and communication bus 2040.

Processor 2010 is used to control receiver 2010 and transmitter 2120 by communication bus.Memory 2130 is used to deposit Store up code.Receiver 2010 receives what mobility management entity MME was sent in the case of the first exchange network failure or overload Re-initiate the notice of the first tracing section updating TAU processes；The notice that transmitter 2020 is received according to receiver 2010 is initiated First tracing section updating process；Receiver 2010 is additionally operable to receive the first TAU that MME is sent according to the first tracing section updating process Received message, wherein the first TAU received messages are used to indicate that the first exchange network is unavailable or failure, so as to by least partly To the second exchange network, the first exchange network is Circuit Switched CS network and internet protocol multi-media system IMS for service switching One of network, the second exchange network are another in CS networks and IMS network, and business is supported for CS networks and IMS network Business.

Alternatively, as another embodiment, receiver 2010 be additionally operable to receive MME send re-initiate the second tracking area Update the notice of TAU processes；Transmitter 2020 is additionally operable to be initiated according to the notice for the second tracing section updating TAU processes that re-initiate Second tracing section updating process；Receiver 2010 is additionally operable to receive the 2nd TAU that MME is sent according to the second tracing section updating process Received message, wherein the 2nd TAU received messages are used to indicate the first exchange network to can use or recover from failure or overload, with Just the first exchange network is returned at least part service switching.

The method that the operation of the unit of device 2000 and function may be referred to above-mentioned Fig. 4, in order to avoid repeating, herein Repeat no more.

Figure 21 is the structure diagram of the device 2100 of the transmission services of another embodiment according to the present invention.Transmission services Device 2100 include processor 2110, transmitter 2120, memory 2130 and communication bus 2140.

Processor 2110, for calling the code stored in memory by communication bus 2140, to detect IMS network Whether overload condition exceedes default threshold value.Transmitter 2120, for detecting the overload condition of IMS network in processor 2110 In the case of default threshold value, notice detection entity IMS network overload, IMS nets are determined to detect entity according to notice Network overloads.

According to an embodiment of the invention, detection entity is public data network gateway P-GW, and device 2100 is in IMS network Session Border Controller SBC or Proxy Call Session Control Function P-CSCF entities.

According to an embodiment of the invention, it is attaching position register/home subscriber server HLR/HSS to detect entity, its Middle device 2100 is the telecommunication voice application server in IMS network；Alternatively, device 2100 is the query call in IMS network Conversation control function I-CSCF or service call conversation control function S-CSCF entities；Alternatively, device 2100 is HLR/HSS.

The method that the operation of the unit of device 2100 and function may be referred to above-mentioned Fig. 5, in order to avoid repeating, herein Repeat no more.

The embodiment of the present invention, which also provides a kind of communication system, to be included：The device 1400 of Figure 14, the device 1500 of Figure 15, The device 1600 of Figure 16 and the device 1700 of Figure 17.

The embodiment of the present invention, which also provides a kind of communication system, to be included：The device 1800 of Figure 18, the device 1900 of Figure 19, The device 2000 of Figure 20 and the device 2100 of Figure 21.

Those of ordinary skill in the art may realize that each exemplary list described with reference to the embodiments described herein Member and algorithm steps, can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually Performed with hardware or software mode, application-specific and design constraint depending on technical solution.Professional technician Described function can be realized using distinct methods to each specific application, but this realization is it is not considered that exceed The scope of the present invention.

It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description, The specific work process of device and unit, may be referred to the corresponding process in preceding method embodiment, details are not described herein.

In several embodiments provided herein, it should be understood that disclosed systems, devices and methods, can be with Realize by another way.For example, device embodiment described above is only schematical, for example, the unit Division, is only a kind of division of logic function, can there is other dividing mode, such as multiple units or component when actually realizing Another system can be combined or be desirably integrated into, or some features can be ignored, or do not perform.It is another, it is shown or The mutual coupling, direct-coupling or communication connection discussed can be the indirect coupling by some interfaces, device or unit Close or communicate to connect, can be electrical, machinery or other forms.

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

In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, can also That unit is individually physically present, can also two or more units integrate in a unit.

If the function is realized in the form of SFU software functional unit and is used as independent production marketing or in use, can be with It is stored in a computer read/write memory medium.Based on such understanding, technical scheme is substantially in other words The part to contribute to the prior art or the part of the technical solution can be embodied in the form of software product, the meter Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment（Can be People's computer, server, or network equipment etc.）Perform all or part of step of each embodiment the method for the present invention. And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage（ROM, Read-Only Memory）, arbitrary access deposits Reservoir（RAM, Random Access Memory）, magnetic disc or CD etc. are various can be with the medium of store program codes.

The above description is merely a specific embodiment, but protection scope of the present invention is not limited thereto, any Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be subject to scope of the claims.

Claims

A kind of 1. method of transmission services, it is characterised in that including：

Mobility management entity MME receives the first abnormality detection result of the first exchange network, first abnormality detection result For indicating that first exchange network is abnormal, and first abnormality detection result is detected by first exchange network Arrive；

The MME triggers at least part user's equipment initiating updating of tracking area process according to first abnormality detection result, with The corresponding at least part business of at least part user equipment is set to switch to the second exchange network by the first exchange network, wherein First exchange network is one of Circuit Switched CS network and internet protocol multi-media system IMS network, and described second hands over Switching network is another in the CS networks and the IMS network, and the business is equal for the CS networks and the IMS network The business of support；

If first abnormality detection result indicates the first exchange network failure, at least part user equipment is described Whole user equipmenies under MME, whole industry that at least part business is the CS networks and the IMS network is supported Business, wherein the MME triggers at least part user's equipment initiating updating of tracking area process according to first abnormality detection result, So that the corresponding at least part business of at least part user equipment switches to the second exchange network by the first exchange network, wrap Include：

It is unavailable or failure that the MME, which sets the state of first exchange network,；

The MME notifies whole user equipmenies to re-initiate the first tracing section updating TAU processes；

After the first TAU processes that whole user equipment re-initiates are received, the MME is to described complete Portion's user equipment sends the first TAU received messages, wherein the first TAU received messages are used to indicate first exchange network For unavailable or failure, so as to by least part service switching to second exchange network.
2. according to the method described in claim 1, it is characterized in that, further include：

The MME receives the second abnormality detection result of the first exchange network, and second abnormality detection result is used to indicate institute The first exchange network is stated from failure to recover；

The MME sets the state of first exchange network to be available or recover from failure；

The MME notifies whole user equipmenies to initiate the 2nd TAU processes；

After the 2nd TAU processes that whole user equipmenies are initiated are received, the MME is set to whole users Preparation send the 2nd TAU received messages, the 2nd TAU received messages be used to indicating first exchange network to be available or Recover from failure, so as to which at least part service switching is returned first exchange network.
A kind of 3. method of transmission services, it is characterised in that including：

Mobility management entity MME receives the first abnormality detection result of the first exchange network, first abnormality detection result For indicating that first exchange network is abnormal, and first abnormality detection result is detected by first exchange network Arrive；

The MME triggers at least part user's equipment initiating updating of tracking area process according to first abnormality detection result, with The corresponding at least part business of at least part user equipment is set to switch to the second exchange network by the first exchange network, wherein First exchange network is one of Circuit Switched CS network and internet protocol multi-media system IMS network, and described second hands over Switching network is another in the CS networks and the IMS network, and the business is equal for the CS networks and the IMS network The business of support；

If first abnormality detection result indicates the first exchange network overload, at least part user equipment is described Certain customers' equipment under MME, the part industry that at least part business is the CS networks and the IMS network is supported Business, the MME trigger at least part user's equipment initiating updating of tracking area process according to first abnormality detection result, so that At least part business switches to the second exchange network by the first exchange network, including：

It is overload that the MME, which sets the state of first exchange network,；

The MME is registered according to the different user equipment of default ratio setting to the first exchange network and the second exchange network；

The MME notifies the corresponding certain customers' equipment of the partial service to re-initiate the first tracing section updating TAU processes；

After the first TAU processes that certain customers' equipment re-initiates are received, the MME is set to the certain customers Preparation send the first TAU received messages, wherein the first TAU received messages are used to indicate that first exchange network is unavailable Or overload, so as to which the partial service is switched to second exchange network so that different user equipmenies is according to the ratio Example uses first exchange network or the second exchange network transmission services.
4. according to the method described in claim 3, it is characterized in that, further include：

The MME receives the second abnormality detection result of the first exchange network, and second abnormality detection result is used to indicate institute The first exchange network is stated from overload to recover；

The MME sets the state of first exchange network to recover for overload；

The MME sets certain customers' equipment to be registered to first exchange network；

The MME notifies certain customers' equipment to initiate the 2nd TAU processes；

After the 2nd TAU processes that certain customers' equipment is initiated are received, to described in certain customers' equipment transmission 2nd TAU received messages, the 2nd TAU received messages be used to indicating first exchange network for it is available or from overload it is extensive It is multiple, so as to which the partial service is switched back into first exchange network.
5. the method according to any one of Claims 1-4, it is characterised in that the mobility management entity MME connects The first abnormality detection result of the first exchange network is received, is specifically included：

The MME receives the information notice request that attaching position register/home subscriber server HLR/HSS is sent, the letter Breath notice request includes first abnormality detection result.
6. the method according to any one of Claims 1-4, it is characterised in that second exchange network is described CS networks, first exchange network are the IMS network, and the mobility management entity MME receives the first exchange network First abnormality detection result, specifically includes：

The MME receives the more new bearer request that the public data network gateway P-GW in the IMS network is sent, and the renewal is held Carry request and include first abnormality detection result.
7. the method according to any one of Claims 1-4, it is characterised in that second exchange network is described IMS network, first exchange network are the CS networks, and the mobility management entity MME receives the first exchange network First abnormality detection result, specifically includes：

The MME receives the information notice request that the media gateway MGW in the CS networks is sent, described information notice request bag Containing first abnormality detection result.
A kind of 8. method of transmission services, it is characterised in that including：

Detection entity in first exchange network is detected the first exchange network, obtains the first abnormality detection result, wherein First abnormality detection result is used to indicate the first exchange network failure or overload；

The detection entity sends first abnormality detection result to mobility management entity MME, so that the MME is described First abnormality detection result indicate in the case of first exchange network overload according to the triggering of default ratio at least partially by Family equipment initiating updating of tracking area process, so that the corresponding at least part business of at least part user's equipment is exchanged from described first Network switching indicates the feelings of the first exchange network failure to the second exchange network, or in first abnormality detection result Whole user equipment initiating updating of tracking area processes are triggered under condition, so that the corresponding business of the whole user equipment is from described the One exchange network switches to the second exchange network, wherein first exchange network is Circuit Switched CS network and Internet protocol One of multimedia system IMS network, second exchange network be the CS networks and the IMS network in another, institute State the business that business is the CS networks and the IMS network is supported.
9. according to the method described in claim 8, it is characterized in that, the detection entity is used for attaching position register/ownership Family server HLR/HSS, the detection entity send first abnormality detection result to MME, including：

The HLR/HSS sends information notice request to the MME, and described information notice request includes first abnormality detection As a result.
10. according to the method described in claim 9, it is characterized in that, further include：

In the case where determining the first exchange network failure, at least part user equipment is quilt by the HLR/HSS The call routing of user is to the second exchange network.
11. according to the method described in claim 9, it is characterized in that, further include：

Whether the HLR/HSS is determined as at least part user equipment of called subscriber according to first exchange network Registration；

The HLR/HSS is registered or not according to institute in definite at least part user equipment according to second exchange network In the case of stating the registration of the first exchange network, using at least part user equipment as the call routing of called subscriber to described Second exchange network.
12. according to the method described in claim 9, it is characterized in that, further include：

Whether the HLR/HSS is determined as at least part user equipment of called subscriber according to first exchange network Registration；

The HLR/HSS is registered according to first exchange network in definite at least part user equipment or not according to In the case of two network registries, using at least part user equipment as called subscriber call routing to described first exchange Network.
It is 13. described according to the method described in claim 8, it is characterized in that, first exchange network is the IMS network Second exchange network is the CS networks, and the detection entity is the public data network gateway P-GW in the IMS network, described Detect entity and send first abnormality detection result to mobility management entity MME, including：

The P-GW sends more new bearer request by gateway S-GW to the MME, and the more new bearer request bag contains institute The first abnormality detection result is stated,

Detection entity in wherein described first exchange network is detected the exception of the first exchange network, including：

The P-GW detects the Session Border Controller SBC or Proxy Call Session Control Function P-CSCF in the IMS network Whether entity is abnormal, wherein in the case of the SBC or described P-CSCF entity exceptions, first abnormality detection result refers to Show that first exchange network is abnormal.
14. the method according to claim 8 or 13, it is characterised in that further include：

The detection entity is detected the exception of the first exchange network, obtains the second abnormality detection result, wherein described the Two abnormality detection results are used to indicate that first exchange network recovers from exception；

The detection entity sends second abnormality detection result to the MME.
15. according to the method described in claim 8, it is characterized in that, first exchange network is the CS networks, described Two exchange networks are the IMS network, and the entity that detects is the media gateway MGW in the CS networks, the detection entity First abnormality detection result is sent to mobility management entity MME, including：

The MGW sends information notice request to the MME, and described information notice request includes the first abnormality detection knot Fruit.
A kind of 16. device for being used for transmission business, it is characterised in that including：

Receiving module, for receiving the first abnormality detection result of the first exchange network, first abnormality detection result is used for Indicate that first exchange network is abnormal, and first abnormality detection result is to detect to obtain by first exchange network 's；

Handover module, the first abnormality detection result for being received according to the receiving module trigger at least part user equipment hair Tracing section updating process is played, so that the corresponding at least part business of at least part user equipment is switched by the first exchange network To the second exchange network, wherein first exchange network is Circuit Switched CS network and internet protocol multi-media system IMS One of network, second exchange network are another in the CS networks and the IMS network, and the business is the CS The business that network and the IMS network are supported；

If first abnormality detection result indicates the first exchange network failure, at least part user equipment is MME Under whole user equipmenies, whole business that at least part business is supported for the CS networks and the IMS network, institute It is unavailable or failure to state handover module and set the state of first exchange network, notifies whole user equipmenies to send out again Play the first tracing section updating TAU processes, and receive the first TAU processes that whole user equipment re-initiates it Afterwards, the first TAU received messages are sent to whole user equipmenies, wherein the first TAU received messages are described for indicating First exchange network is unavailable or failure, so as to by whole service switchings to second exchange network.
17. device according to claim 16, it is characterised in that the receiving module also receives the of the first exchange network Two abnormality detection results, second abnormality detection result are used to indicate that first exchange network recovers from failure；It is described Handover module sets the state of first exchange network, and to can use or recover from failure, wherein described device further includes：

Sending module, for notifying whole user equipmenies to initiate the 2nd TAU processes；Received in receiving module described After the 2nd TAU processes that whole user equipmenies are initiated, the 2nd TAU received messages are sent to whole user equipmenies, The 2nd TAU received messages are used to indicating first exchange network to be available or recover from failure, so as to will described in extremely First exchange network is returned in small part service switching.
A kind of 18. device for being used for transmission business, it is characterised in that including：

Receiving module, for receiving the first abnormality detection result of the first exchange network, first abnormality detection result is used for Indicate that first exchange network is abnormal, and first abnormality detection result is to detect to obtain by first exchange network 's；

Handover module, the first abnormality detection result for being received according to the receiving module trigger at least part user equipment hair Tracing section updating process is played, so that the corresponding at least part business of at least part user equipment is switched by the first exchange network To the second exchange network, wherein first exchange network is Circuit Switched CS network and internet protocol multi-media system IMS One of network, second exchange network are another in the CS networks and the IMS network, and the business is the CS The business that network and the IMS network are supported；

If first abnormality detection result indicates the first exchange network overload, at least part user equipment is MME Under certain customers' equipment, the partial service that at least part business is supported for the CS networks and the IMS network, institute It is overload to state handover module and set the state of first exchange network, and is set according to the different user of default ratio setting Standby to be registered to the first exchange network and the second exchange network, notification section user equipment re-initiates the first tracing section updating TAU Process, after the first TAU processes that certain customers' equipment re-initiates are received, the MME is to the certain customers Equipment sends the first TAU received messages, wherein the first TAU received messages are used to indicate first exchange network for can not With or overload, so as to which the partial service is switched to second exchange network so that different user equipmenies are according to described Ratio uses first exchange network or the second exchange network transmission services.
19. device according to claim 18, it is characterised in that the receiving module also receives the of the first exchange network Two abnormality detection results, second abnormality detection result are used to indicate that first exchange network recovers from overload；It is described Handover module sets the state of first exchange network to recover for overload；The MME sets certain customers' equipment to institute The registration of the first exchange network is stated, wherein described device further includes：

Sending module, for notifying certain customers' equipment to initiate the 2nd TAU processes, and receives in the receiving module After the 2nd TAU processes that certain customers' equipment is initiated, send the 2nd TAU to certain customers' equipment and receive to disappear Breath, the 2nd TAU received messages are used to indicate first exchange network to can use or recover from overload, so as to by described in Partial service switches back into first exchange network.
20. the device according to claim 18 or 19, it is characterised in that the receiving module receives home location register The information notice that device/home subscriber server HLR/HSS is sent is asked, and the request of described information notice includes the described first abnormal inspection Survey result.
21. the device according to claim 18 or 19, it is characterised in that second exchange network is the CS networks, First exchange network is the IMS network, and the receiving module receives the public data network gateway P- in the IMS network The more new bearer request that GW is sent, the more new bearer request bag contain first abnormality detection result.
22. the device according to claim 18 or 19, it is characterised in that second exchange network is the IMS network, First exchange network is the CS networks, what the media gateway MGW that the receiving module receives in the CS networks was sent Information notice request, described information notice request include first abnormality detection result.
A kind of 23. device of transmission services, it is characterised in that including：

Detection module, for being detected to the first exchange network, obtains the first abnormality detection result, wherein described first is abnormal Testing result is used to indicate the first exchange network failure or overload；

Sending module, for the first abnormality detection result for detecting described in being sent to mobility management entity MME, so as to described MME in the case where first abnormality detection result indicates first exchange network overload according to default ratio trigger to Small part user equipment initiating updating of tracking area process, so that the corresponding at least part business of at least part user's equipment is from described First exchange network switches to the second exchange network, or indicates first exchange network in first abnormality detection result Whole user equipment initiating updating of tracking area processes are triggered in the case of failure, so that the corresponding business of the whole user equipment The second exchange network is switched to from first exchange network, wherein first exchange network is for Circuit Switched CS network and mutually One of networking protocol multimedia system IMS network, second exchange network are another in the CS networks and the IMS network One, the business that the business is the CS networks and the IMS network is supported.
24. device according to claim 23, it is characterised in that described device is attaching position register/home subscriber Server HLR/HSS, the sending module send information notice request to the MME, and described information notice request is comprising described First abnormality detection result.
25. device according to claim 23, it is characterised in that further include：

Routing module, in the case where determining the first exchange network failure, being by least part user equipment The call routing of called subscriber is to the second exchange network.
26. device according to claim 23, it is characterised in that further include：

Determining module, for whether being determined as at least part user equipment of called subscriber according to the first exchange network note Volume；

Routing module, for being registered in definite at least part user equipment according to the second exchange network or not according to first Exchange network register in the case of, using at least part user equipment as called subscriber call routing to described second friendship Switching network.
27. device according to claim 23, it is characterised in that further include：

Determining module, for whether being determined as at least part user equipment of called subscriber according to the first exchange network note Volume；

Routing module, for being registered in definite at least part user equipment according to the first exchange network or not according to second In the case of network registry, using at least part user equipment as the call routing of called subscriber to first switching network Network.
28. device according to claim 23, it is characterised in that first exchange network is the IMS network, described Second exchange network is the CS networks, and described device is the public data network gateway P-GW in the IMS network, the transmission Module sends more new bearer request by gateway S-GW to the MME, and the more new bearer request bag is different containing described first Normal testing result, the detection module detect Session Border Controller SBC or agent call session control in the IMS network Whether function P-CSCF entities are abnormal, wherein in the case of SBC the or P-CSCF entities exception, first abnormality detection As a result indicate that first exchange network is abnormal.
29. the device according to claim 23 or 28, it is characterised in that the detection module is also to the first exchange network Exception is detected, and obtains the second abnormality detection result, wherein second abnormality detection result is used to indicate that described first hands over Switching network recovers from exception；The detection module also sends second abnormality detection result to the MME.
30. device according to claim 23, it is characterised in that first exchange network is the CS networks, described Second exchange network is the IMS network, and described device is the media gateway MGW in the CS networks, the sending module to The MME sends information notice request, and described information notice request includes first abnormality detection result.