CN106921935A

CN106921935A - The route processing method and system of IMS local services

Info

Publication number: CN106921935A
Application number: CN201510988903.XA
Authority: CN
Inventors: 李振东
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2015-12-24
Filing date: 2015-12-24
Publication date: 2017-07-04
Also published as: WO2017107643A1

Abstract

The invention provides the route processing method and system of a kind of IMS local services, wherein, the processing method includes：Network element in home network receives the call request of user equipment (UE), wherein, the called number in call request is the local number of visited network；Network element in home network initiates the request for inquiring about the geography information residing for UE according to call request to the network element in visited network；Network element in home network receives response of the network element to asking in visited network, wherein, the geography information of at least one of is carried in response：National code, the area code of UE their locations, the postcode of UE their locations of country residing for UE；Geography information provides foundation for home network generation global routable number.By the present invention, solve in correlation technique due to P-GW and S-GW not in one network, to be changed local number when UE is in roaming state, cause the problem of call request failure.

Description

The route processing method and system of IMS local services

Technical field

The present invention relates to the communications field, in particular to the route processing method and system of a kind of IMS local services.

Background technology

IP multimedia subsystem (IP Multimedia Core Network Subsystem, referred to as IMS) is by the 3rd The one kind proposed for partner program (3rd Generation Partnership Project, referred to as 3GPP) is based on IP The network architecture, construct one opening and flexible service environment, support multimedia application, can provide the user Abundant multimedia service.

In IMS business systems, key-course and operation layer are to separate, and key-course does not provide specific business, only to industry Business layer provides the functions such as necessary triggering, route, charging.IMS provides the ability of operation layer, and user is needed by drilling The grouping system (Evolved Packet System, referred to as EPS) for entering, is linked into carrier network.

Fig. 1 is the basic framework schematic diagram of the IMS+EPS of 3GPP definition in correlation technique, as shown in figure 1, control Layer in business triggering and control function be CSCF (Call Session Control Function, referred to as CSCF) complete.CSCF CSCF points is：Proxy Call Session Control Function (Proxy-CSCF, Referred to as P-CSCF), query call conversation control function (Interrogating-CSCF, referred to as I-CSCF) kimonos Business CSCF (Serving-CSCF, referred to as S-CSCF) three types.

Operation layer is made up of a series of application servers (Application Server, referred to as AS), can provide specific Business service.Key-course (S-CSCF) is triggered according to the CAMEL-Subscription-Information control business of user, calls the business on AS, Realize business function.The subscription data of user store in home subscribed services device (Home Subscription Server, Referred to as HSS), user in IMS registration, subscription data can from HSS download to user's registration to S-CSCF in.

End-to-end equipment in session is referred to as user equipment (User Equipment, referred to as UE), is responsible for and user Interaction, some UE have a mode of various access networks, including by the packet switch of 3GPP (Packet Switch, Referred to as PS) domain access network, by the ps domain access network of other non-3 gpp.Each user can distribute to A few SIP URI, referred to as IMS IP multimedia pUblic identity (IMS public user identity, referred to as IMPU), lattice The following sip of formula:xyz@abc.com.

Mobility management unit (Mobility Management Element, referred to as MME), core network control surface net Unit, mainly authenticated and contracted inspection to UE.MME simultaneously for user selection gateway (Serving Gateway, Referred to as S-GW) and packet domain gateway (Packet Data Network Gateway, referred to as P-GW).At user When Idle state, MME can initiate the paging to the user according to the user's context for preserving to base station.MME Mobile management across base station is also provided.

S-GW：User plane network element, anchor point of user when base station movement, and provided with P-GW's in roaming condition Roaming interface.When user is under Idle state, S-GW buffered user datas simultaneously trigger MME and carry out paging to user.

P-GW：User plane network element, is that UE distributes IP (Internet Protocol) address, and access business network.When with P-GW is IP layers of anchor point when family is moved, and will not be changed, so as to ensure business continuance.

"Policy and Charging Rules Function (Policy and Charging Rules Function, referred to as PCRF) makes for business The formulation of service quality (Quality of Service, referred to as QoS) and charging policy is carried out with Internet resources.PCRF Formulating the control strategy needs to combine from application function (Application Function, referred to as AF), in IMS systems In system, P-CSCF is exactly the business information that a kind of AF is received, from user-subscribed database (Subscription Profile Repository, referred to as SPR) user signing contract information that receives, the strategy etc. of operator's configuration.PCRF will be business The control strategy of formulation be handed down to strategy and charge execution function (Policy and Charging Enforcement Function, Referred to as PCEF) or bearing binding and reporting events function (Bearer Binding and Event Report Function, Referred to as BBERF) perform.PCRF can subscribe to bearing bed dependent event to PCEF and/or BBERF simultaneously, with Convenient bearing bed occurs to be perceived in time during the event, and changes control strategy.Additionally, PCEF and business detection work( PCC rules (PCEF) that energy (Traffic Detection Function, referred to as TDF) can be issued according to PCRF Or application and detection control (Application Detection and Control, referred to as ADC) rule (TDF) are performed Using detection and control function.

A kind of very universal business in communication system during local service, such as, the user on A ground is to B places, can be with Local/prefix is directly dialed, without increasing area code before number.Or when roaming external, directly dial Called number, and without additional national code.Such as：After U.S. user reaches China, local number can be directly dialed 139xxxxxxxx, without dialing+86139xxxxxxxx.

It is that SIP routes are performed according to called number in IMS systems, and this local number is not global routable By number (Global Routing Number, referred to as GRN), this number must be converted into global routable by number Code, could perform called process；Fig. 2 is process chart of the IMS local numbers in calling in correlation technique, such as Include shown in Fig. 2, the step of the flow：

Step S201：UE sends call request to P-CSCF, and wherein called number is local number；

Step S202：After P-CSCF receives calling, it is found that this is local number, P-CSCF can be looked into PCRF/-GW Ask positional information.After inquiring positional information, P-CSCF can generate a geographical indication according to positional information (Geographical Identifier)；

Wherein, positional information generally comprises cell information (Cell ID), and tracing area (Tracking Area, referred to as TA) information, the upper tables of comparisons that can configure these information and geographical indication of P-CSCF.

Step S203：After then geographical indication is inserted into Invite message by P-CSCF, user attaching IMS nets are sent to The S-CSCF of network；

Step S204：Call request is transmitted to AS to process by S-CSCF；

Step S205：AS is converted to global routable number according to the information for receiving；

Step S206：AS continues calling procedure, wherein called number converted global routable number.

Can be in the related art the tool after P-CSCF is to PCRF request position informations for above-mentioned steps S202 The inquiry mode of body has various, and PCRF can initiate bearing modification process, or loading establishing process, in this process The positional information of UE is obtained, PCRF can also directly to P-GW inquiring position information, and Fig. 3 is exhibition in correlation technique Show that PCRF obtains the flow chart of positional information by bearing modification, wherein, inquiring position information in loading establishing process It is also similar, as shown in figure 3, the step of flow includes：

Step S301：P-CSCF is to PCRF inquiring position information；

Step S302：PCRF initiates IP-CAN session modification requests；

Wherein, the request can change the QoS of session, it is also possible to not change, if only for inquiring position, can be with QoS is not changed, then will not trigger step S305；

Step S303：P-GW initiates bearing modification to S-GW；

Step S304：S-GW initiates bearing modification to MME；

Step S305：If have modified QoS, MME needs to initiate resource modifying process to eNodeB；

Step S306：MME replys bearing modification and responds to S-GW, wherein containing positional information；

Step S307：S-GW replys bearing modification and responds to P-GW, wherein containing positional information；

Step S308：P-GW replys session modification and responds to PCRF, wherein containing positional information；

Step S309：PCRF replys positional information to P-CSCF.

However, having individual restrictive condition for the such scheme in correlation technique, it is necessary to be IMS local break-outs (Local Breakout, referred to as LBO), that is, P-CSCF, PCRF, P-GW, these network elements of S-GW, MME are necessary In one network.

Fig. 4 is the configuration diagram that S8HR (S8Home Routed) is shown in correlation technique, as shown in figure 4, In this framework, MME, S-GW are in visited network, and the network element such as P-GW, PCRF, P-CSCF is in ownership In network, now the technical scheme in above-mentioned Fig. 2 just generates problem, and the current positional information of user is felt by MME Know, and can notify that, to P-GW, P-CSCF is obtained from PCRF/P-GW, is internally changed by kinds of schemes It is geographical indication.

But in fig. 4, due to P-GW and S-GW not in one network, visited network due to a variety of causes (such as Safety), the information related to network topology such as visited network cell, TA, and these letters will not be provided to home network Mapping relations between breath and geographical indication.Therefore, the P-CSCF in home network cannot be converted to effective geographical mark Know, AS cannot also complete number translated.

Such as the framework in above-mentioned Fig. 4, only one China user roams into the U.S., S-GW, MME in American Network, remaining Network element is in China.American Network operator be will not by information network cell, TA etc. related to network topology, and Mapping relations between these information and geographical indication tell Chinese operator.So user is 301 an area code is dialed Local number 2345678 when, user according to custom directly dial 2345678.In the step S202 shown in Fig. 2, The P-CSCF of the Chinese network of ownership cannot generate effective geographical indication (shortage area code), and in step S205, Or AS is converted to 0012345678 (001 is American National code) to continue to route, but after calling reaches the U.S., nothing Method identifies the region of specific hair, call failure；Or AS thinks here it is the number of China continues to call.No matter which Individual situation, calling can all fail.

In correlation technique, during P-CSCF inquiring position information, in addition to cell information, TA information, additionally it is possible to obtain The latitude and longitude information of UE.But, in LBO frameworks, be not dependent on this information to generate geographical indication, this be because Could realize that this is non-for operator needs configuration present networks overlay area, the mapping table between longitude and latitude, geographical indication It is often complicated.And in the case of S8HR, this way becomes unlikely, the longitude and latitude in operator's needs configuration whole world, Mapping table between geographical indication.

For the above mentioned problem in correlation technique, not yet there is effective solution at present.

The content of the invention

The invention provides the route processing method and system of a kind of IMS local services, with least solving correlation technique Due to P-GW and S-GW not in one network, local number cannot be changed when UE is in roaming state, Cause the problem of call request failure.

According to an aspect of the invention, there is provided a kind of route processing side of IP multimedia subsystem IMS local services Method, the treating method comprises：Network element in home network receives the call request of user equipment (UE), wherein, it is described Called number in call request is the local number of visited network；Network element in the home network please according to the calling Ask the request initiated to the network element in visited network for inquiring about the geography information residing for the UE；In the home network Network element receive response of the network element to the request in the visited network, wherein, carried in the response it is following at least One of geography information：National code, the area code of the UE their locations, the UE institutes of country residing for the UE Locate the postcode in area；The geography information provides foundation for home network generation global routable number.

Further, the network element in the home network includes：Proxy Call Session Control Function P-CSCF, strategy and Charging rule functions PCRF, PDN Gateway P-GW and application server AS；Network element bag in the visited network Include：Mobility management unit MME, gateway S-GW.

Further, the network element in the home network receives the call request that user equipment (UE) is sent by called number Including：The P-CSCF receives the call request that the UE sends.

Further, the network element in the home network initiates to be used for according to the call request to the network element in visited network The request for inquiring about the geography information residing for the UE includes：The P-CSCF is initiated for poll bit to the PCRF The request of confidence breath, wherein, the inquiry for inquiring about the geography information is carried in the request of the inquiring position information Indicate；Or, the P-CSCF initiates the request of inquiry geography information to the PCRF；The PCRF is to the P-GW Initiation carries the session modification request that inquiry geography information is indicated；The P-GW initiates to carry to look into the S-GW Ask the bearer update request that geography information is indicated；The S-GW carries inquiry geography information and refers to MME initiations The bearer update request shown, wherein, the inquiry geography information is indicated for indicating the MME inquiries geographical letter Breath.

Further, response of the network element in response to the request in the network element reception visited network in the home network Including：The S-GW receives the bearer update for carrying the geography information response that the MME sends；It is described S-GW sends the bearer update response for carrying the geography information to the P-GW；The P-GW is to the PCRF Transmission carries the session modification response of the geography information；The PCRF sends the geographical letter to the P-CSCF Breath.

Further, the global routable number is obtained in the following manner：The P-CSCF is according to the geographical letter Generation geographical indication is ceased, and the call request of the geographical indication will be carried and continue to be forwarded to the AS；The AS The call request is received, and the called number is converted into global routable number according to the geographical indication.

Further, the network element in the home network includes：Application server AS, home subscribed services device HSS, Service call conversation control function S-CSCF, the network element in the visited network includes：Mobility management unit MME.

Further, the network element in the home network receives the call request that user equipment (UE) is sent by called number Including：The S-CSCF receives the call request that the UE sends；The S-CSCF is by the call request It is forwarded to the AS.

Further, it is described after the call request that the network element reception user equipment (UE) in the home network sends Method also includes：The AS initiates the inquiry request of geography information to the HSS, wherein, taken in the inquiry request Inquiry with the geography information is indicated；The geography information is sent to the AS by the HSS；The AS according to The called number is converted into global routable number according to the geography information, and according to the global routable number after It is continuous to perform call operation.

Before the geography information is sent to the AS by the HSS, methods described also includes：The HSS to The MME sends the inquiry and indicates, wherein, the inquiry is indicated for indicating the MME to inquire about the geography Information；The MME sends the inquiry response to the HSS, wherein, the response carries the geography information.

Further, it is described before the network element in the home network receives the call request that user equipment (UE) sends Method also includes：After the geographical position of the UE changes, the HSS receives the renewal that the MME is reported The geography information of the UE afterwards.

According to another aspect of the present invention, there is provided a kind of route processing of IP multimedia subsystem IMS local services Method, including：Network element in the visited network, the network element received in home network is receiving exhaling for user equipment (UE) After crying request, the request for inquiring about the geography information residing for the UE of initiation；Network element in the visited network, Response is sent to the network element in the home network in response to the request for inquiring about the geography information, wherein, the sound The geography information of at least one of is carried in should asking：Residing for the national code of country, the UE residing for the UE Area code, the postcode of the UE their locations in area.

According to another aspect of the present invention, there is provided a kind of route processing of IP multimedia subsystem IMS local services System, it is characterised in that the system includes：Home network network element and visited network network element, wherein, the home network Network element in network, the call request for receiving user equipment (UE), wherein, the called number in the call request is The local number of visited network；And initiated for inquiring about the UE to the network element in visited network according to the call request The request of residing geography information, wherein, the geography information is provided for home network generation global routable number Foundation；Network element in the visited network, in response to the request for inquiring about the geography information to the home network Network element in network sends response, wherein, the geography information of at least one of is carried in the respond request：It is described National code, the area code of the UE their locations, the postcode of the UE their locations of country residing for UE.

Further, the P-CSCF, for receiving the call request that the UE sends.

Further, the P-CSCF, is additionally operable to the request for initiating for inquiring position information to the PCRF, its In, the inquiry that the geography information is carried in the request for inquiring position information is indicated；Or, the P-CSCF The request of inquiry geography information is initiated to the PCRF；The PCRF, for initiating to carry to the P-GW to look into Ask the session modification request that geography information is indicated；The P-GW, for initiating to carry inquiry geography to the S-GW The bearer update request that information is indicated；The S-GW, refers to for carrying inquiry geography information to MME initiations The bearer update request shown, wherein, the inquiry is indicated for indicating the MME to inquire about the geography information.

Further, the S-GW, for receiving the carrying for carrying the geography information that the MME sends more New response, and the carrying change response for carrying the geography information is sent to the P-GW；The P-GW, is used for The carrying session modification response for carrying the geography information is sent to the PCRF；The PCRF, for described P-CSCF sends the geography information.

Further, the network element in the home network also includes：Application server AS, home subscribed services device HSS, Service call conversation control function S-CSCF, the network element in the visited network includes：Mobility management unit MME.

Further, the S-CSCF, for the call request that the UE sends, and by the call request It is forwarded to the AS.

Further, after the call request that user equipment (UE) is sent by called number is received, the system is also wrapped Include：The AS, the inquiry request for initiating geography information to the HSS, wherein, carried in the inquiry request The inquiry for having the geography information is indicated；The HSS, for the geography information to be sent into the AS；The AS, It is additionally operable to that the called number is converted into global routable number according to the geography information, and according to the global routable Call operation is continued executing with by number.

Before the geography information is sent into the AS, the system also includes：The HSS, for described MME sends the inquiry and indicates, wherein, the inquiry is indicated for indicating the MME to inquire about the geography information； The MME, for sending the inquiry response to the HSS, wherein, the response carries the geography information.

Further, before the call request that user equipment (UE) is sent by called number is received, the system is also wrapped Include：The HSS, after the geographical position of the UE changes, after receiving the renewal that the MME is reported The UE geography information.

In the present invention, in the call request that UE is initiated by the local number belonging to visited network, in home network Network element request from the geography information residing for UE to the network element in visited network that can initiate for inquiring about, and then visited network In network element inquire the geography information, the geography information for the home network generation global routable number provide Foundation, that is to say, that even if P-GW and S-GW be not in same network in correlation technique, and home network passes through The geography information that visited network is inquired can also be changed to local number, continue to realize calling, so as to solve correlation In technology due to P-GW and S-GW not in one network, local number cannot be carried out when UE is in roaming state Conversion, causes the problem of call request failure.

Brief description of the drawings

Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, the present invention Schematic description and description be used for explain the present invention, do not constitute inappropriate limitation of the present invention.In the accompanying drawings：

Fig. 1 is the basic framework schematic diagram of the IMS+EPS of 3GPP definition in correlation technique；

Fig. 2 is process chart of the IMS local numbers in calling in correlation technique；

Fig. 3 is that the flow chart that PCRF obtains positional information by bearing modification is illustrated in correlation technique；

Fig. 4 is the configuration diagram that S8HR is shown in correlation technique；

Fig. 5 is the flow of the route processing method of IP multimedia subsystem IMS local services according to embodiments of the present invention Figure；

Fig. 6 is the structure of the routing processing system of IP multimedia subsystem IMS local services according to embodiments of the present invention Block diagram；

Fig. 7 is the alternative construction block diagram one of the routing processing system of IMS local services according to embodiments of the present invention；

Fig. 8 is the alternative construction block diagram two of the routing processing system of IMS local services according to embodiments of the present invention；

Fig. 9 is the flow chart one that AS according to embodiments of the present invention inquires about geography information to HSS；

Figure 10 is the flowchart 2 that AS according to embodiments of the present invention inquires about geography information to HSS；

Figure 11 is the flow chart that P-CSCF according to embodiments of the present invention inquires about geography information to PCRF.

Specific embodiment

Describe the present invention in detail below with reference to accompanying drawing and in conjunction with the embodiments.It should be noted that in the feelings not conflicted Under condition, the feature in embodiment and embodiment in the application can be mutually combined.

The background overview of embodiment of the present invention technical scheme：It is divided into visited network in the framework of S8HR in the related art And home network, wherein visited network includes：MME and S-GW, and home network includes：P-GW, PCRF with And the network element such as P-CSCF, it is seen that P-GW and S-GW in one network, do not cause visited network for various reasons The information related to network topology such as cell information, the TA of visited network, and these letters will not be provided to home network Mapping relations between breath and geographical indication.Therefore, the P-CSCF in home network cannot be converted to effective geographical mark Know, AS cannot also complete number translated.

The functional overview of the embodiment of the present invention：The embodiment of the present invention employs the geography information that network inquires about user to MME, MME is according to the positional information of UE, the geography information of feedback user.Further, AS can need to do local number When code conversion, geography information is inquired about to HSS, HSS inquires about geography information to MME.P-CSCF can also be to PCRF inquires about geography information, and PCRF utilizes loading establishing process or bearing modification process query geography information, also may be used Directly to inquire about geography information to P-GW.The present invention is described in detail with the embodiment of the present invention below in conjunction with the accompanying drawings.

Embodiment one：

A kind of route processing method of IP multimedia subsystem IMS local services is provided in the present embodiment, and Fig. 5 is The flow chart of the route processing method of IP multimedia subsystem IMS local services according to embodiments of the present invention, such as Fig. 5 Shown, the flow comprises the following steps：

Step S502:Network element in home network receives the call request of user equipment (UE), wherein, in call request Called number is the local number of visited network；

Step S504：Network element in home network is initiated for inquiring about UE according to call request to the network element in visited network The request of residing geography information；

Step S506：Network element in home network receives response of the network element to asking in visited network, wherein, in response Carry the geography information of at least one of：National code, the area code of UE their locations, the UE institutes of country residing for UE Locate the postcode in area；Geography information provides foundation for home network generation global routable number；

By the above-mentioned steps S502 to step S506 of the present embodiment, in UE by local belonging to visited network During the call request that number is initiated, the network element in home network can be initiated for inquiring about UE institutes to the network element in visited network The request of the geography information at place, and then network element in visited network inquires the geography information, the geography information is home network Network generation global routable number provides foundation, that is to say, that even if P-GW and S-GW be not same in correlation technique In individual network, and home network can also be changed by the geography information that visited network is inquired to local number, be continued Calling is realized, so as to solve in correlation technique due to P-GW and S-GW not in one network, is in UE unrestrained Local number cannot be changed during free state, cause the problem of call request failure.

In the optional embodiment of the present embodiment, can include for the network element in home network in the present embodiment：Agency CSCF P-CSCF, "Policy and Charging Rules Function PCRF, PDN Gateway P-GW and application clothes Business device AS；And the network element in visited network can include：Mobility management unit MME, gateway S-GW.

Based on the network element in above-mentioned home network, user is received for the network element in the home network that is related in the present embodiment Equipment UE can be realized in the following way by way of the call request that called number sends：P-CSCF connects Receive the call request that UE sends.

And then, for the network element in the home network that is related in the present embodiment step S504 according to call request to visit Network element in network initiates the mode of the request for inquiring about the geography information residing for UE, can in the following way come real It is existing：

Step S504-1：P-CSCF initiates the request for inquiring position information to PCRF, wherein, poll bit confidence The inquiry for inquiring about geography information is carried in the request of breath to indicate；Or, P-CSCF initiates inquiry geography to PCRF The request of information；；

Step S504-2：PCRF initiates to carry the session modification request that inquiry geography information is indicated to P-GW；

It should be noted that the inquiry geography information indicate can be it is above-mentioned in for inquire about geography information inquiry indicate, Or, carried in the request of inquiry geography information that can be P-CSCF initiate to PCRF for indicating the geographical letter of inquiry The instruction of breath.

Step S504-3：P-GW initiates to carry the bearer update request that inquiry geography information is indicated to S-GW；

Step S504-4：S-GW initiates to carry the bearer update request that inquiry geography information is indicated to MME, wherein, Inquiry geography information is indicated for indicating MME to inquire about geography information.

And network element rings in receiving visited network for the network element in the home network that is related in step S506 in the present embodiment Should can in the following way be realized in the mode of the response of request：

Step S506-1：S-GW receives the bearer update for the carrying geography information response that MME sends；

Step S506-2：S-GW sends the renewal response for carrying geography information to P-GW；

Step S506-3：P-GW sends the session modification response for carrying geography information to PCRF；

Step S506-4：PCRF sends geography information to P-CSCF.

Global routable number for being related in the present embodiment can be obtained in the following manner：P-CSCF is according to ground Reason information generates geographical indication, and will carry the call request of the geographical indication and continue to be forwarded to AS；The AS is received Call request, and called number is converted into global routable number according to geographical indication.

And the network element in the home network in another optional embodiment of the present embodiment also includes：Application server AS, home subscribed services device HSS, service call conversation control function S-CSCF, the network element in visited network include： Mobility management unit MME.Based on the network element in the home network, for being related in step S502 in the present embodiment Home network in network element receive the call request that user equipment (UE) is sent by the local number belonging to visited network Mode, can realize in the following way：S-CSCF receives the call request that UE sends, and the S-CSCF will be called Request is forwarded to AS.

And after network element in the home network receives the call request that user equipment (UE) sends, the method for the present embodiment Can also include：

Step S510-1：AS initiates the inquiry request of geography information to HSS, wherein, geography is carried in inquiry request The inquiry of information is indicated；

Step S510-2：The geography information that HSS will be locally stored is sent to AS；

Step S510-3：Called number is converted to global routable number by AS according to geography information, and can according to the whole world Routing number continues executing with call operation.

From above-mentioned steps S510-1 to step S510-3, after inquiry instruction can be sent to MME from HSS, by MME inquires geography information according to inquiry instruction, and geography information is sent into HSS, and HSS sends out geography information AS is sent to, and then local number is changed according to geography information, and calling is continued executing with according to the number after conversion Operation.

In another optional embodiment of the present embodiment, before geography information is sent to AS by HSS, this implementation The method of example can also include：HSS sends inquiry and indicates to MME, wherein, inquiry is indicated for indicating MME to look into Ask geography information；MME sends inquiry response to HSS, wherein, response carries geography information.

And in another optional embodiment of the present embodiment, network element in the home network receives user equipment (UE) hair Before the call request sent, the method for the present embodiment can also include：After the geographical position of UE changes, HSS Receive the geography information of the UE after the renewal that MME is reported.

And in another optional embodiment of the present embodiment, network element in the home network receives user equipment (UE) hair After the call request sent, the method for the present embodiment also includes：

Step S512-1：Call request is forwarded to AS by S-CSCF；

Step S512-2：AS initiates the inquiry request for inquiring about geography information to HSS, wherein, taken in inquiry request Inquiry with geography information is indicated；

Step S512-3：HSS will be sent to AS with the inquiry corresponding geography information of instruction；

Step S512-4：Called number is converted to global routable number by AS according to geography information, and can according to the whole world Routing number continues executing with call operation.

It should be noted that the embodiment is described this side from home network, and for this side of visited network, It is in the present invention corresponding, i.e., embodiments of the invention can be with a kind of 1 local industry of IP multimedia subsystem IMS The step of route processing method of business, the method, includes：

Step S11：The network element that network element in visited network is received in home network please in the calling for receiving user equipment (UE) After asking, the request for inquiring about the geography information residing for UE of initiation；

Step S12：Network element in visited network, in response to the request for inquiring about geography information to the net in home network Unit sends response, wherein, the geography information of at least one of is carried in respond request：The country of country residing for UE Code, the area code of UE their locations, the postcode of UE their locations.

That is, above-mentioned steps S11 and step S12 be from this side of visited network correspond to above-mentioned steps S502 to Step S506.

Embodiment two

Through the above description of the embodiments, those skilled in the art can be understood that according to above-described embodiment Method can add the mode of required general hardware platform by software to realize, naturally it is also possible to by hardware, but a lot In the case of the former be more preferably implementation method.Based on such understanding, technical scheme is substantially in other words to existing The part for having technology to contribute can be embodied in the form of software product, and the computer software product is stored at one In storage medium (such as ROM/RAM, magnetic disc, CD), including some instructions are used to so that a station terminal equipment (can Being mobile phone, computer, server, or network equipment etc.) method that performs each embodiment of the invention.

A kind of routing processing system of IP multimedia subsystem IMS local services, the dress are additionally provided in the present embodiment Put for realizing above-described embodiment and preferred embodiment, carried out repeating no more for explanation.As used below, Term " module " can realize the combination of the software and/or hardware of predetermined function.Although the dress described by following examples Put and preferably realized with software, but hardware, or the realization of the combination of software and hardware is also that may and be contemplated.

Fig. 6 is the structure of the routing processing system of IP multimedia subsystem IMS local services according to embodiments of the present invention Block diagram, as shown in fig. 6, routing processing system includes：The network element in network element and visited network 64 in home network 62, Wherein, the network element in home network 62, the call request for receiving user equipment (UE), wherein, in call request Called number for visited network local number；And initiated for inquiring about to the network element in visited network according to call request The request of the geography information residing for UE, wherein, geography information provides foundation for home network generation global routable number； Network element in visited network 64, for being sent to the network element in home network in response to the request for inquiring about geography information Response, wherein, the geography information of at least one of is carried in respond request：National code, the UE of country residing for UE The area code of their location, the postcode of UE their locations.

Fig. 7 is the alternative construction block diagram one of the routing processing system of IMS local services according to embodiments of the present invention, such as Shown in Fig. 7, the network element in the home network includes：Proxy Call Session Control Function P-CSCF, strategy and charging rule Then function PCRF, PDN Gateway P-GW and application server AS；Network element in visited network includes：Mobility Administrative unit MME, gateway S-GW.Although it should be noted that the network element in Fig. 7 in dotted line frame is in the reality Apply in mode without occurring, but it is complete for scheme, the network element in dotted line frame has been filled in the figure 7.

Based on the network element in the network element and visited network in the home network in above-mentioned Fig. 7, the P-CSCF in the present embodiment, The call request that the local number belonging to visited network sends is crossed for receiving UE.

For the network element foundation local number in Fig. 7 home network to the network element initiation in visited network for inquiring about UE The mode of the request of residing geography information, based on the network element in the network element and visited network in the home network in Fig. 7 Can be, P-CSCF the request for being additionally operable to initiate for inquiring position information to PCRF, wherein, for poll bit The inquiry that geography information is carried in the request of confidence breath is indicated；Or, P-CSCF initiates inquiry geography information to PCRF Request；PCRF, for initiating to carry the session modification request that inquiry geography information is indicated to P-GW；P-GW, For initiating to carry the bearer update request that inquiry geography information is indicated to S-GW；S-GW, for being sent out to MME Rise and carry the bearer update request that inquiry geography information is indicated, wherein, inquiry indicates geographical for indicating MME to inquire about Information.

Sent out to the network element in home network in response to the request for inquiring about geography information for the network element in Fig. 7 home network The mode of respond request is sent, can be based on the network element in the network element and visited network in the home network in Fig. 7, S-GW, for receiving the bearer update for the carrying geography information response of MME transmissions, and sends carrying to P-GW There is the carrying change response of geography information；P-GW, the carrying session that geography information is carried for being sent to PCRF is repaiied Change response；PCRF, for sending geography information to P-CSCF.

Alternatively, global routable number is obtained in the following manner：P-CSCF generates geographical indication according to geography information, And the call request of geographical indication will be carried continue to be forwarded to AS；AS receives call request, and will according to geographical indication Called number is converted to global routable number.

Fig. 8 is the alternative construction block diagram two of the routing processing system of IMS local services according to embodiments of the present invention, such as Shown in Fig. 8, the network element in the home network can also include in addition to the network element in Fig. 7：Application server AS, Home subscribed services device HSS, service call conversation control function S-CSCF；Network element in visited network includes：It is mobile Property administrative unit MME.Although it should be noted that the network element in Fig. 8 in dotted line frame does not go out in this embodiment It is existing but complete for scheme, the network element in dotted line frame has been filled in fig. 8.

Based on the network element in Fig. 8, the S-CSCF in the system can be used for receiving the call request that UE sends, and Call request is forwarded to AS.

And the system can also include：AS, for receiving the call request that user equipment (UE) is sent by called number Afterwards, the inquiry request of geography information is initiated to HSS, wherein, the inquiry that geography information is carried in inquiry request refers to Show；HSS, for after the call request that user equipment (UE) is sent by called number is received, geography information being sent out It is sent to AS；AS, is additionally operable to after the call request that user equipment (UE) is sent by called number is received, according to ground Called number is converted to global routable number by reason information, and continues executing with call operation according to global routable number.

System also includes：HSS, for before geography information is sent into AS, sending inquiry to MME and indicating, Wherein, inquiry is indicated for indicating MME to inquire about geography information；MME, for sending inquiry response to HSS, its In, response carries geography information.

That is, be in which from AS directly to HSS initiate geography information inquiry request, and then HSS to MME sends inquiry and indicates, and the geography information is forwarded into AS by HSS after MME inquires the geography information, AS and then can check numbers is changed.

And in another optional embodiment of the present embodiment, user equipment (UE) is being received by exhaling that called number sends Before crying request, the system of the present embodiment can also include：HSS, after the geographical position of UE changes, is used for Receive the geography information of the UE after the renewal that MME is reported.

And after the call request that user equipment (UE) is sent by called number is received, the system also includes：S-CSCF, For call request to be forwarded into AS；AS, the inquiry request for initiating geography information to HSS, wherein, inquiry please The inquiry that geography information is carried in asking is indicated；HSS, for AS will to be sent to the inquiry corresponding geography information of instruction； The AS, for being changed to local number according to geography information, and continues executing with calling behaviour according to the number after conversion Make.

That is, when the position of UE changes, MME, the ground for reporting the UE after updating to HHS Reason information, and then when call request is produced, the conversion of number can be carried out according to the geography information after renewal.

Based on above-described embodiment one and embodiment two, with reference to the implementation method in concrete application scene to the He of embodiment one Embodiment two is described in detail；

Implementation method one

Fig. 9 is the flow chart one that AS according to embodiments of the present invention inquires about geography information to HSS, as shown in figure 9, should The step of flow, includes：

Step S901：UE sends call request to IMS network, and wherein called number is local number.

Step S902：S-CSCF forwards calls to AS；

Step S903：AS initiates geographical information query to HSS；

Step S904：HSS initiates geographical information query to MME；

Step S905：MME returns to geography information response to HSS, and geography information may includes national code, area code, The contents such as postcode；

Step S906：HSS returns to geography information response to AS；

Step S907：AS does number translated；

Step S908：AS continues calling procedure, and wherein called number has replaced with global routable number；

Implementation method two

Figure 10 is the flowchart 2 that AS according to embodiments of the present invention inquires about geography information to HSS, as shown in Figure 10, The step of flow, includes：

Step S1001：After MME has found that the geography information of UE changes, the geographical letter after updating is reported to HSS Breath.If user is attachment for the first time, MME also will report geography information to HSS.Geography information may includes state The contents such as family's code, area code, postcode；

Step S1002：UE sends call request to IMS network, and wherein called number is local number；

Step S1003：S-CSCF forwards calls to AS；

Step S1004：AS initiates geographical information query to HSS；

Step S1005：HSS returns to geography information response to AS；

Step S1006：AS does number translated；

Step S1007：AS continues calling procedure, and wherein called number has replaced with global routable number；

Implementation method three

Figure 11 is the flow chart that P-CSCF according to embodiments of the present invention inquires about geography information to PCRF, such as Figure 11 institutes Show, include the step of the flow：

Step S1101：UE sends call request to P-CSCF, and wherein called number is local number；

Step S1102：After P-CSCF receives calling, it is found that this is local number, P-CSCF inquires about geographical to PCRF Positional information；

Wherein, P-CSCF can reuse existing inquiring position information, it is also possible to increase ground in existing position enquiring Manage the instruction of information inquiry；

Step S1103：PCRF initiates IP-CAN session modification requests to P-GW；

Wherein, PCRF can reuse existing session modification request, it is also possible to increase geography information in existing request The instruction of inquiry.

Step S1104：P-GW initiates bearing modification to S-GW to be asked；

Wherein, P-GW can reuse existing bearing modification request, it is also possible to increase geography information in existing request The instruction of inquiry.

Step S1105：S-GW initiates bearing modification to MME to be asked；

Wherein, if the instruction comprising geographical information query in the requests that receive of S-GW, also to be sent out in request is changed To MME；

Step S1106：MME replys bearing modification and responds to S-GW, wherein containing geography information；

Wherein, geography information may includes the contents such as national code, area code, postcode；

Step S1107：S-GW replys bearing modification and responds to P-GW, wherein containing geography information；

Step S1108：P-GW replys session modification and responds to PCRF, wherein containing geography information；

Step S1109：PCRF replys geography information to P-CSCF；

Step S1110：P-CSCF receives geography information, generates geographical indication；Follow-up processing flow after the step The step of with after step S202 in Fig. 2, is consistent, will not be repeated here.

Wherein, after then geographical indication is inserted into Invite message by P--CSCF, it is sent to user attaching IMS network hair Send.

Embodiments of the invention additionally provide a kind of storage medium.Alternatively, in the present embodiment, above-mentioned storage medium can To be arranged to storage for performing the program code of following steps：

S1:Network element in home network receives the call request of user equipment (UE), wherein, the called number in call request Code is the local number of visited network；

S2：Network element in home network is initiated for inquiring about residing for UE according to call request to the network element in visited network The request of geography information；

S3：Network element in home network receives response of the network element to asking in visited network, wherein, carried in response with At least one lower geography information：The national code of country, the area code of UE their locations, UE their locations residing for UE Postcode；Geography information provides foundation for home network generation global routable number；

Obviously, those skilled in the art should be understood that above-mentioned of the invention each module or each step can be with general Computing device realizes that they can be concentrated on single computing device, or is distributed in multiple computing devices and is constituted Network on, alternatively, the program code that they can be can perform with computing device be realized, it is thus possible to by they Storage is performed by computing device in the storage device, and in some cases, can be held with different from order herein The shown or described step of row, or they are fabricated to each integrated circuit modules respectively, or will be many in them Individual module or step are fabricated to single integrated circuit module to realize.So, the present invention is not restricted to any specific hardware Combined with software.

The preferred embodiments of the present invention are the foregoing is only, is not intended to limit the invention, for the technology of this area For personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made it is any Modification, equivalent, improvement etc., should be included within the scope of the present invention.

Claims

1. a kind of route processing method of IP multimedia subsystem IMS local services, it is characterised in that including：

Network element in home network receives the call request of user equipment (UE), wherein, the quilt in the call request Code of calling out the numbers is the local number of visited network；

Network element in the home network is initiated for inquiring about according to the call request to the network element in visited network The request of the geography information residing for the UE；

Network element in the home network receives response of the network element to the request in the visited network, wherein, institute State the geography information that at least one of is carried in responding：National code, the UE of country residing for the UE The area code of their location, the postcode of the UE their locations；The geography information is given birth to for the home network Foundation is provided into global routable number.

2. method according to claim 1, it is characterised in that the network element in the home network includes：Agent call Conversation control function P-CSCF, "Policy and Charging Rules Function PCRF, PDN Gateway P-GW and application server AS；Network element in the visited network includes：Mobility management unit MME, gateway S-GW.

3. method according to claim 2, it is characterised in that the network element in the home network receives user equipment UE is included by the call request that called number sends：

The P-CSCF receives the call request that the UE sends.

4. according to the method in claim 2 or 3, it is characterised in that the network element in the home network is exhaled described in The request for making request be initiated for inquiring about the geography information residing for the UE to the network element in visited network includes：

The P-CSCF initiates the request for inquiring position information to the PCRF, wherein, the inquiring position The inquiry for inquiring about the geography information is carried in the request of information to indicate；Or, the P-CSCF is to described PCRF initiates the request of inquiry geography information；

The PCRF initiates to carry the session modification request that inquiry geography information is indicated to the P-GW；

The P-GW initiates to carry the bearer update request that inquiry geography information is indicated to the S-GW；

The S-GW initiates to carry the bearer update request that inquiry geography information is indicated to the MME, wherein, The inquiry geography information is indicated for indicating the MME to inquire about the geography information.

5. method according to claim 4, it is characterised in that the network element in the home network receives the visit net Network element includes in response to the response of the request in network：

The S-GW receives the bearer update for carrying the geography information response that the MME sends；

The S-GW sends the bearer update response for carrying the geography information to the P-GW；

The P-GW sends the session modification response for carrying the geography information to the PCRF；

The PCRF sends the geography information to the P-CSCF.

6. method according to claim 4, it is characterised in that the global routable number is obtained in the following manner：

The P-CSCF generates geographical indication according to the geography information, and will carry exhaling for the geographical indication Request is made to continue to be forwarded to the AS；

The AS receives the call request, and the called number is converted into the whole world according to the geographical indication Can routing number.

7. method according to claim 1, it is characterised in that the network element in the home network includes：Application service Device AS, home subscribed services device HSS, service call conversation control function S-CSCF, the net in the visited network Unit includes：Mobility management unit MME.

8. method according to claim 7, it is characterised in that the network element in the home network receives user equipment UE is included by the call request that called number sends：

The S-CSCF receives the call request that the UE sends；

The call request is forwarded to the AS by the S-CSCF.

9. method according to claim 8, it is characterised in that the network element in the home network receives user equipment After the call request that UE sends, methods described also includes：

The AS initiates the inquiry request of geography information to the HSS, wherein, carried in the inquiry request The inquiry of the geography information is indicated；

The geography information is sent to the AS by the HSS；

The called number is converted to global routable number by the AS according to the geography information, and according to institute State global routable number and continue executing with call operation.

10. method according to claim 9, it is characterised in that be sent to the geography information in the HSS described Before AS, methods described also includes：

The HSS sends the inquiry and indicates to the MME, wherein, the inquiry indicates described for indicating MME inquires about the geography information；

The MME sends the inquiry response to the HSS, wherein, the response carries the geographical letter Breath.

11. methods according to claim 9, it is characterised in that the network element in the home network receives user equipment Before the call request that UE sends, methods described also includes：

After the geographical position of the UE changes, after the HSS receives the renewal that the MME is reported The geography information of the UE.

A kind of 12. route processing methods of IP multimedia subsystem IMS local services, it is characterised in that including：

Network element in visited network receives network element in home network after the call request for receiving user equipment (UE), The request for inquiring about the geography information residing for the UE initiated；

Network element in the visited network is in response to the request for inquiring about the geography information to the home network In network element send response, wherein, the geography information of at least one of is carried in the respond request：It is described National code, the area code of the UE their locations, the postcode of the UE their locations of country residing for UE.

13. a kind of routing processing systems of IP multimedia subsystem IMS local services, it is characterised in that the system includes： The network element in network element and visited network in home network, wherein,

Network element in the home network, the call request for receiving user equipment (UE), wherein, the calling Called number in request is the local number of visited network；And according to the call request to the net in visited network Unit initiates the request for inquiring about the geography information residing for the UE, wherein, the geography information is the ownership Network generation global routable number provides foundation；

Network element in the visited network, in response to the request for inquiring about the geography information to the ownership Network element in network sends response, wherein, the geography information of at least one of is carried in the respond request： The postal volume of the national code of country, the area code of the UE their locations, the UE their locations residing for the UE Code.

14. systems according to claim 13, it is characterised in that the network element in the home network includes：Agency exhales Cry conversation control function P-CSCF, "Policy and Charging Rules Function PCRF, PDN Gateway P-GW and application service Device AS；Network element in the visited network includes：Mobility management unit MME, gateway S-GW.

15. systems according to claim 14, it is characterised in that

The P-CSCF, for receiving the call request that the UE sends.

16. system according to claims 14 or 15, it is characterised in that

The P-CSCF, is additionally operable to the request for initiating for inquiring position information to the PCRF, wherein, it is described Inquiry for carrying the geography information in the request of inquiring position information is indicated；Or, the P-CSCF to The PCRF initiates the request of inquiry geography information；

The PCRF, for initiating to carry the session modification request that inquiry geography information is indicated to the P-GW；

The P-GW, for initiating to carry the bearer update request that inquiry geography information is indicated to the S-GW；

The S-GW, for initiating to carry the bearer update request that inquiry geography information is indicated to the MME, Wherein, the inquiry is indicated for indicating the MME to inquire about the geography information.

17. systems according to claim 16, it is characterised in that

The S-GW, for receiving the bearer update for carrying the geography information response that the MME sends, And the carrying change response for carrying the geography information is sent to the P-GW；

The P-GW, the carrying session modification that the geography information is carried for being sent to the PCRF is responded；

The PCRF, for sending the geography information to the P-CSCF.

18. systems according to claim 17, it is characterised in that the global routable number is obtained in the following manner Take：

19. systems according to claim 13, it is characterised in that the network element in the home network also includes：Using Server A S, home subscribed services device HSS, service call conversation control function S-CSCF, in the visited network Network element include：Mobility management unit MME.

20. systems according to claim 19, it is characterised in that

The S-CSCF, for the call request that the UE sends, and is forwarded to institute by the call request State AS.

21. systems according to claim 20, it is characterised in that the system also includes：

The AS, for after the call request that user equipment (UE) is sent by called number is received, to described HSS initiates the inquiry request of geography information, wherein, the inquiry of the geography information is carried in the inquiry request Indicate；

The HSS, for after the call request that user equipment (UE) is sent by called number is received, by institute State geography information and be sent to the AS；

The AS, is additionally operable to after the call request that user equipment (UE) is sent by called number is received, foundation The called number is converted to global routable number by the geography information, and according to the global routable number Continue executing with call operation.

22. systems according to claim 20, it is characterised in that the system also includes：

The HSS, for before the geography information is sent into the AS, sending described to the MME Inquiry is indicated, wherein, the inquiry is indicated for indicating the MME to inquire about the geography information；

The MME, for before the geography information is sent into the AS, sending described to the HSS Inquiry response, wherein, the response carries the geography information.

23. systems according to claim 20, it is characterised in that also include in the system：

The HSS, before receiving the call request that user equipment (UE) is sent by called number, and described After the geographical position of UE changes, the geographical letter for receiving the UE after the renewal that the MME is reported Breath.