CN100438513C - System and method for realizing route control - Google Patents

Abstract

The present invention discloses a method and a system for realizing route control. In the method, a route policy decide point (RPDP) needs setting in advance, and RP information is stored on the RPDP; after a route query request transmitted by GMSC to HLR is held up by RPDP, the route query request is confirmed to be used as the reinforced cross-domain route control of a connected route under the called condition in service which can be provided by CS/IMS according to a certain policy and situations that whether a user can reach or not in different domains, etc. When the method of the present invention is used, the HLR is unchanged, and the route control can also be realized under the conditions that an access network does not support CAMEL, or a user currently appearing affects the activated incoming call locking triggered by called CAMEL service and the incoming call locking is determined by an operator.

Description

Realize the system and method for route control

Technical field

The present invention relates to communication technical field, particularly realize the system and method for route control.

Background technology

From 3rd Generation Partnership Project (3GPP) the R5 stage, universal mobile telecommunications system (UMTS) core net is divided into circuit switching (CS, Circuit Switched Domain) territory, packet switching (PS, Packet Switched Domain) territory and IP Multimedia System (IMS, IP Multimedia Subsystem), wherein, the CS territory is used for providing to the user connection of Circuit Service, comprises MSC (MSC Server/CS-MGW), GMSC (gateway mobile switching center) (GMSC), Interworking Function (IWF).Mobile switching centre (MSC) is used to finish the exchange and the signaling controlled function of circuit switched type business; GMSC is the MSC that finishes mobile subscriber's routing addressing function in a certain network, can close with MSC if set up separately; IWF is used for being closely related with MSC, finishes public land mobile net (PLMN) and ISDN, PSTN, the internetwork intercommunication of PDN, mainly finishes the signaling translation function, and concrete function is according to professional different regulations with the network kind.

The PS territory is used for providing to the user connection of packet-type business, comprises support node (GSN), borde gateway (BG).Wherein, GSN is used to finish the transmission of Packet Service user's grouping bag, and GSN comprises Serving GPRS Support Node (SGSN) and critical point GPRS Support Node (GGSN) again.SGSN provides core net and wireless access system, connection as base station sub-system (BSS), wireless access system (RNS), finish the function such as mobile management, session management of multicomponent data business, managing mobile terminal (MS) moving and communication service in the mobile network, GGSN also has the function of inquiring position information simultaneously as the interface between mobile communication system and other public data network.SGSN, GGSN all provide charge information.BG is used to finish the intercommunication between two GPRS network, guarantees the fail safe of network interworking.

In addition, the shared functional entity in CS territory and PS territory also comprises attaching position register (HLR)/AUC (AuC).HLR finishes user contracting data, as user of mobile station international number (MSISDN), international travelling carriage identification code (IMSI), packet data protocol address (PDPADDRESS), signatory telecommunication service and supplementary service and the professional scope of application thereof etc., and the management of positional information, as Mobile Station Roaming Number (MSRN), MSC/VLR number, SGSN number, Gateway Mobile Location Center (GMLC) etc., AuC then stores user's authentication arithmetic and key; Other comprise the VLR Visitor Location Register (VLR) of handling the various data messages of visitor, the equipment identity register (EIR) of storage customer equipment identification IMEI information and Gateway Short Message Center MSC (SMS-GMSC/SMS IMSC) etc.

IMS is a subsystem that is superimposed upon in the WCDMA network that increases in the 3GPP R5 stage on the existing packet-switched domain, adopt the bearer path of packet-switched domain for its upper strata control signaling and media delivery, introduce the session initiation protocol Session Initiation Protocol as professional control protocol, utilize simple, the easy expansion of SIP, media combination characteristics easily, by business control is separated with carrying control, provide abundant multimedia service; Main functional entity comprises control user registration in the IMS territory, the controlling call entity CSCF CSCF of functions such as session control, the application server AS of miscellaneous service logic control function is provided, the home subscriber server HSS and being used to of centralized management user contracting data realizes MGCF (the MGCF)/IMS media gateway (IM-MGW) with the circuit switching net interconnecting, the user is by current location agent node Proxy Call Session Control Function P-CSCF access IMS territory, and session and professional triggering control reach with the business control of AS and then finished by the home domain service node such as the service call conversation control function S-CSCF of its registered place alternately.

HSS in the IMS territory is the superset of HLR, can compatible HLR on the function, but because factors such as networking process, HSS and CS/PS HLR are likely situation about setting up separately in the concrete networking.

Solved the roam charge that the required solution of multimedia service is provided under the IP carrying by the defined IMS framework of 3GPP standard comprehensively, QoS, but the problems of operation that safety guarantee etc. are crucial, its framework and thinking have obtained industry and have generally acknowledged, 3GPP2, TISPAN has all carried out the definition of corresponding IP multi-media network framework and business system with the 3GPP model as basis and reference, 3GPP has also begun to insert and UMTS intercommunication (I-WLAN) at WLAN, fixed broadband inserts IMS (FBI) and towards the all-IP net subject studies such as (AIPN) of multiple access technology, the user can signatory insert IMS by single multimode terminal or polytype different terminals via the Access Network of different access technologies according to it, to obtain unified multimedia service, comprise the VoIP business.

In addition, mobile number carries (MNP, Mobile Number Portability) be that a kind of user of making can not change under its Mobile Subscriber International ISDN Number situation, the ability of change subscription network, its main thought is: build the number portability database of sharing (NPDB) between described different subscription network, with the current subscription network of recording user, and when each network is determined the called route of user, then finish the inquiry of NPDB to determine the current network of being contracted of user by modes such as intelligent network or signaling relayings.

But, because what in fact MNP solved is a user and sign ownership change problem thereof, user and to identify the ownership in a certain moment be unique, and present situation is different therewith, user ID is to share in different network domains, as in the CS territory or the IMS territory, the terminal that the user can use its different access technologies that has according to its wish simultaneously or only insert in CS territory and the IMS territory one, and network need ensure as long as the user can reach in any one network domains, just can receive the calling of other users to it, perhaps two territories all can and situation under according to user intention or operation strategy is preferential selects a network domains to continue.Because the user is to change flexibly at the access situation of same area not and user intention or operation strategy, therefore present MNP also not exclusively is fit to solve this flexible strategies and controls routing decision problem.

Summary of the invention

In view of this, the purpose of this invention is to provide a kind of system and method for realizing route control, make it when terminal access to IMS territory of using different access technologies or CS territory, can both receive the calling of other users according to predetermined strategy to it.

A kind of method that realizes route control provided by the invention sets in advance routing policy decision point RPDP, and this method also comprises:

A. after GMSC (gateway mobile switching center) GMSC receives setup requests in the circuit domain, send routing inquiry request to attaching position register HLR;

B.RPDP tackles this routing inquiry request, and as the routing decision query requests, according to current routing policy information, and the routing decision relevant information of preserving in the CS/IMS territory is determined current routing decision information with this routing inquiry request;

C.RPDP will send to GMSC according to the determined routing iinformation of current routing decision, and GMSC carries out route control according to the routing iinformation of receiving.

The current routing decision of determining among the step B is the CS territory, and then step C comprises:

C11, RPDP will continue to send to HLR from the routing inquiry request of GMSC;

The current place of C12, HLR and called subscriber Visited Mobile Switching Center (VMSC) gets access to roaming number alternately, and this roaming number is sent to RPDP by the routing inquiry response;

C13, RPDP transmit the routing inquiry response to GMSC, wherein contain this roaming number, and GMSC routes the call to called place VMSC according to roaming number.

The current routing decision of determining among the step B is the CS territory, and the user goes into to exhale to exist the incoming call latching service of the corresponding incoming call locking that activates and/or network operator's decision at this time, and then step C comprises:

C21, RPDP will continue to send to HLR from the routing inquiry request of GMSC;

C22, HLR are signatory according to the user, and the response of routing inquiry refusal is sent to RPDP, wherein contain Reason For Denial;

C23, RPDP is according to the concrete reason in the refusal response, once more according to current routing policy information, and the routing decision relevant information of preserving in the CS/IMS territory is determined current routing decision information, if determined routing decision is to change by IMS territory route, then send the routing inquiry response and return the virtual roaming number that points to the Interworking gateway MGCF between CS territory and IMS territory to GMSC by this response message to GMSC, if remain in CS territory route, then transmit the response of routing inquiry refusal to GMSC, wherein contain the concrete reason in the refusal response, GMSC is according to the current call request of this refusal response reject.

What determine among the step B is the IMS territory, and then step C comprises:

C31, RPDP directly send the routing inquiry response and return the virtual roaming number that points to the Interworking gateway MGCF between CS territory and IMS territory to GMSC by this response message to GMSC;

After C32, GMSC receive the response of this routing inquiry, utilize the wherein virtual roaming number of the Interworking gateway MGCF between CS territory and IMS territory, route the call to MGCF and proceed route in the IMS territory by MGCF.

The relevant information of routing decision described in the step B is that RPDP inquires about from HLR/HSS and obtains.

Described RPDP adopts MAP from HLR/HSS inquiry routing decision relevant information, and described routing decision relevant information is to adopt the operation of MAP Any Time Interrogation to obtain.

Perhaps, adopt the Dimeter agreement to communicate between HSS and RPDP, described routing decision relevant information is to adopt Diameter user data requests UDR/UDA operation, or Diameter user registration state inquiry UAR/UAA operation, or Diameter place information inquiry LIR/LIA operation realizes.

Described routing decision relevant information adopts the operation of MAP Any Time Interrogation to obtain, and, HLR is after receiving the request of MAP Any Time Interrogation, initiate MAP to the VMSC at user place the user profile operation is provided, and return the Any Time Interrogation response to RPDP in user profile operation response is provided according to the user profile that VMSC carries.

After the VMSC at user place receives that MAP from HLR provides the user profile operation requests, MAP according to HLR provides indication and/or this locality in the user profile operation requests that the paging of initiation to the user is set, and returns active user's information according to the paging result to HLR.

The relevant information of routing decision described in the step B is that RPDP preserves in advance.

Before step B, further comprise:

User's information relevant with routing decision that HLR/HSS initiatively upgrades RPDP and preserved by HLR/HSS and interface between RPDP in the CS/IMS territory.

HLR/HSS and RPDP interface adopt MAP to communicate alternately, and it is to operate realization by MAP location update operations, MAP insertion/deletion user that the active of described routing decision relevant information is upgraded,

Perhaps, adopt Diameter to communicate between HSS and RPDP, the described renewal user that RPDP the preserved information relevant with routing decision in the CS/IMS territory adopts Diameter server to distribute the SAR/SAA operation, or Diameter upgrades user contracting data PPR/PPA operation, or Diameter booking reader's data change SNR/SNA and notice user data change PNR/PNA operation realize.

The described routing policy information of step B sets in advance at RPDP, and in advance by the operator of operator by the interface between OSS OSS and RPDP and/or be provided with by the interface between user and RPDP by the user;

When routing policy information described in the step B comprises: when can not paging in the CS territory under user situation, forwarding the IMS territory to and continuing, operator of operator or user are provided with corresponding unreachable and/or Call Forwarding No Reply data by HLR to the VMSC at user place simultaneously, wherein, transferred number points to the Interworking gateway MGCF between CS territory and IMS territory.

A kind of method that realizes route control provided by the invention is applied to comprise in the route control procedure in IMS territory and CS territory that set in advance routing policy decision point RPDP, and routing policy information is set, this method also comprises in the routing policy decision point:

A.RPDP intercepts current GMSC after the routing inquiry request that HLR sends, and judges whether this GMSC satisfies the requirement of routing policy decision point inquiry mode, if this GMSC satisfies described requirement, and execution in step B then, otherwise, execution in step E;

B.RPDP obtains the callee side mobile network and strengthens logical client application (CAMEL) CAMEL-Subscription-Information T-CSI from HLR, and this callee side CAMEL Subscription Information T-CSI returned to current GMSC, current GMSC triggers the callee side business according to T-CSI, and sends the routing decision query requests to RPDP;

After C.RPDP received this routing decision query requests, according to current routing policy information, and the routing decision relevant information of preserving in the CS/IMS territory was determined current routing decision information; RPDP will send to current GMSC according to the determined routing iinformation of current routing decision information;

D. current GMSC carries out route control, process ends according to the routing iinformation of receiving;

E.RPDP returns the routing iinformation that points to the 2nd GMSC that satisfies the requirement of routing policy decision point inquiry mode to current GMSC, and current GMSC routes the call to the 2nd GMSC, and the 2nd GMSC sends routing inquiry request as current GMSC to HLR, execution in step A.

Intercept current GMSC after the routing inquiry request that HLR sends in steps A, judging this GMSC further comprises before whether satisfying the requirement of routing policy decision point inquiry mode:

A1.RPDP and HLR are mutual, confirm any one or its combination in the following situation: user's callee side CAMEL business of whether having contracted, and whether the user goes into to exhale to exist the incoming call latching service of the corresponding incoming call locking that activates and/or network operator's decision at this time; If user not signing callee side CAMEL is professional or go into to exhale the incoming call locking of the corresponding activation of existence and/or the incoming call latching service that the network operator determines at this time, carry out directly then that routing decision is judged and transmit above-mentioned routing inquiry request to HLR in CS territory route the time at determined current routing decision, or directly transmit above-mentioned routing inquiry request to HLR, otherwise proceed the judgement whether this GMSC satisfies the requirement of routing policy decision point inquiry mode, and carry out different processing according to judged result;

A2. after transmitting above-mentioned routing inquiry request, if receive the refusal response that comprises Reason For Denial that HLR returns, then according to the concrete reason in the refusal response, determine current routing decision information according to the routing decision relevant information of preserving in current routing policy information and the CS/IMS territory once more, if determined routing decision is to change by IMS territory route, then send the routing inquiry response and return the virtual roaming number that points to the Interworking gateway MGCF between CS territory and IMS territory, process ends to GMSC by this response message to GMSC; If remain in CS territory route, then transmit the response of routing inquiry refusal to GMSC, GMSC is according to the current call request of this refusal response reject, process ends.

The current routing decision of determining among the step C is that IMS territory route continues or CS territory route continues, when described current routing decision is an IMS territory route when continuing, further comprise in the current routing decision information described in the step C: the redirection number that points to the Interworking gateway MGCF between CS territory and IMS territory;

When current routing decision is that IMS territory route continues, then the current GMSC of step D according to the step that the routing iinformation of receiving carries out route control is: current GMSC is according to redirection number, routes the call to MGCF and proceeded to continue in the route in IMS territory by MGCF;

Continue when current routing decision is defined as CS territory route, then the current GMSC of step D according to the step that the routing iinformation of receiving carries out route control is:

D1, current GMSC initiate to suppress the routing inquiry request of callee side CAMEL Subscription Information to HLR, this request pass through once more as the RPDP of signaling transfer point STP and by its according to concrete signaling message type or wherein key message judge that direct transparent transmission is to HLR;

D2, HLR send the request of Providing Roaming Number to the current place VMSC of called subscriber, and with VMSC in the response that Provides Roaming Number the roaming number that returns in the routing inquiry response through as the RPDP of STP and by its according to concrete signaling message type or wherein key message judge that direct transparent transmission returns to current GMSC, current GMSC routes the call to called place VMSC in view of the above.

Satisfy described in the step e requirement of routing policy decision point inquiry mode the 2nd GMSC routing iinformation be to select arbitrarily from satisfying the GMSC routing iinformation that routing policy decision point inquiry mode requires of preserving of RPDP self, or select according to the priority preset mode.

Judge described in the steps A that whether this GMSC satisfies the requirement of routing policy decision point inquiry mode is that the particular cell indication judges whether to possess tenability to CAMEL in the routing inquiry request that sends by this GMSC, or the OPC Origination Point Code that carries in the routing inquiry request that sends of this GMSC incompatible judgement that whether conforms to the signaling point code that disposes among the RPDP.

The relevant information of routing decision described in the step C is that RPDP inquires about from the HLR/HSS in CS/IMS territory and obtains.

Described RPDP adopts the HLR/HSS inquiry routing decision relevant information of MAP from the CS/IMS territory, and described routing decision relevant information is to adopt the operation of MAP Any Time Interrogation to obtain;

Perhaps, adopt Diameter to communicate between HSS and RPDP, described routing decision relevant information is to adopt Diameter user data requests UDR/UDA operation, or Diameter user registration state inquiry UAR/UAA operation, or Diameter place information inquiry LIR/LIA operation realizes.

The relevant information of routing decision described in the step C is that RPDP preserves in advance.

This method further comprises:

User's information relevant with routing decision that HLR/HSS initiatively upgrades RPDP and preserved by HLR/HSS and interface between RPDP in the CS/IMS territory.

HLR/HSS and RPDP interface adopt MAP to communicate alternately, and described routing decision relevant information is to operate realization by MAP location update operations, MAP insertion/deletion user,

Perhaps, adopt Diameter to communicate between HSS and RPDP, the described renewal user that RPDP the preserved information relevant with routing decision in the CS/IMS territory adopts Diameter server to distribute the SAR/SAA operation, or Diameter upgrades user contracting data PPR/PPA operation, or Diameter booking reader's data change SNR/SNA and notice user data change PNR/PNA operation realize.

A kind of system that realizes route control provided by the invention is applied to receive in the CS territory in the route control procedure of calling, and this system comprises: user's subscribed services device, RPDP and GMSC, and wherein, RPDP links to each other with GMSC with described user's subscribed services device,

Described user's subscribed services device is used to preserve IMS/CS territory user contracting data and user's current state/positional information, for RPDP provides described IMS/CS the user profile in territory;

RPDP when intercepting the GMSC routing inquiry request, determines current routing decision according to the called user information that current routing policy and described user's subscribed services device provide, and will return to GMSC according to the routing iinformation that described current routing decision is determined;

GMSC is used for sending routing inquiry request to described user's subscribed services device, after receiving the routing inquiry response that RPDP returns, according to RPDP return routing iinformation carry out route control.

Described user's subscribed services device is the HLR in the CS territory, or is the HSS in IMS territory, or is HLR and HSS combination, or is an independently physical entity.

When the current routing decision of determining was CS territory route, described routing iinformation was a roaming number,

RPDP is further used for the routing inquiry request from GMSC is continued to send to user's subscribed services device, and the roaming number that will obtain from user's subscribed services device sends to GMSC by the routing decision inquiry response;

User's subscribed services device after being further used for receiving the routing inquiry request of RPDP, gets access to roaming number alternately with the current place VMSC of called subscriber, and this roaming number is sent to RPDP.

When the current routing decision of determining was IMS territory route, described routing iinformation was the virtual roaming number of the Interworking gateway MGCF between sensing CS territory and IMS territory,

RPDP is further used for directly sending the routing inquiry response and returning the virtual roaming number that points to the Interworking gateway MGCF between CS territory and IMS territory to GMSC by this response message to GMSC;

GMSC after being used to receive the routing inquiry response of RPDP transmission, utilizes the virtual roaming number that points to the Interworking gateway MGCF between CS territory and IMS territory, routes the call to MGCF.

When the current routing decision of determining is CS territory route, and the user is when going into to exhale to exist the incoming call latching service of the incoming call locking that activates and/or network operator's decision at this time,

RPDP, be further used for continuing to send to user's subscribed services device from the routing inquiry request of GMSC, and the concrete reason in the refusal that returns according to the user's subscribed services device response, once more according to current routing policy information, and the routing decision relevant information of preserving in the CS/IMS territory is determined current routing decision information; If determined routing decision is to change by IMS territory route, then send the routing inquiry response and return the virtual roaming number that points to the Interworking gateway MGCF between CS territory and IMS territory to GMSC by this response message to GMSC, if remain in CS territory route, then transmit the response of routing inquiry refusal, wherein contain the concrete reason in the refusal response to GMSC;

GMSC, after being used to receive the routing inquiry response of RPDP transmission, utilize the virtual roaming number that points to the Interworking gateway MGCF between CS territory and IMS territory, route the call to MGCF and proceed route in the IMS territory by MGCF, after perhaps being used to receive the routing inquiry refusal response of RPDP, refuse current call request;

User's subscribed services device, signatory after being further used for receiving the routing inquiry request of RPDP according to the user, the response of routing inquiry refusal is sent to RPDP, wherein contain Reason For Denial.

Described RPDP further comprises the interface with OSS OSS, is used to receive the operator of operator operation signal, and the policy information of self preserving is increased, deletes, inquires about, preserves and revises.

Described RPDP further comprises the interface with the user, is used to receive user's operation signal, and the policy information of self preserving is increased, deletes, inquires about, preserves and revises.

Adopt MAP to communicate between GMSC and RPDP, the employing MAP communicates and/or Diameter communicates between described user's subscribed services device and described RPDP.

A kind of system that realizes route control provided by the invention is applied to receive in the CS territory in the route control procedure of calling, and this system comprises: user's subscribed services device, RPDP and GMSC, and wherein, RPDP links to each other with GMSC with user's subscribed services device,

Described user's subscribed services device is used to preserve IMS/CS territory user contracting data and user's current state/positional information, and for RPDP provides described IMS/CS the user profile in territory, and the routing inquiry request of transmitting according to RPDP provides the routing inquiry object information;

RPDP, be used to tackle the routing inquiry request that current GMSC sends to described user's subscribed services device, determine whether current GMSC satisfies the requirement of routing policy decision point inquiry mode, when current GMSC satisfies the requirement of routing policy decision point inquiry mode, from described user's subscribed services device, inquire about callee side CAMEL Subscription Information T-CSI and offer current GMSC, when current GMSC does not satisfy the requirement of routing policy decision point inquiry mode, provide the routing iinformation that points to the 2nd GMSC that satisfies the requirement of routing policy decision point inquiry mode for current GSMC; And after receiving the routing decision query requests of the current GMSC transmission of satisfying the requirement of routing policy decision point inquiry mode, determine current routing decision information according to the called user information that current routing policy and described user's subscribed services device provide, and the current routing decision information that will determine offers current GMSC;

GMSC, after being used to receive setup requests, send routing inquiry request as current GMSC to described user's subscribed services device, and, after receiving that the routing iinformation of the 2nd GMSC that routing policy decision point inquiry mode requires is satisfied in sensing that RPDP provides, route the call to the 2nd GMSC that this satisfies the requirement of routing policy decision point inquiry mode; Obtain and offer user's callee side CAMEL Subscription Information T-CSI of current GMSC from described user's subscribed services device according to RPDP, trigger callee side CAMEL business, and send the routing decision query requests to RPDP with this, and, after receiving the current routing decision inquiry response that RPDP returns, carry out route control according to the current routing decision information that RPDP returns.

Described user's subscribed services device is the HLR in the CS territory, or is the HSS in IMS territory, or is HLR and HSS combination, or is physical entity independently.

Described RPDP further comprises the interface with OSS OSS, is used for conversation strategy information, receives the operator of operator operation signal, and the policy information of self preserving is increased, deletes, inquires about, preserves and revises.

Described RPDP further comprises the interface with the user, is used for conversation strategy information, receives user's operation signal, and the policy information of self preserving is increased, deletes, inquires about, preserves and revises.

Between described GMSC and RPDP by CAMEL Application Part and MAP interface communication, and, in the following ways any one or its combination: described user's subscribed services device and RPDP adopt MAP to communicate, when described user's subscribed services device is HSS or when comprising HSS, adopt Diameter to communicate between HSS and RPDP.

Described PRDP tackles current GMSC after the routing inquiry request that user's subscribed services device sends, and whether satisfies the requirement of routing policy decision point inquiry mode at definite this GMSC and takes a step forward and be used for:

Mutual with user's subscribed services device, confirm any one or its combination in the following situation: user's callee side CAMEL business of whether having contracted, whether the user goes into to exhale to exist the incoming call locking that activates and/or the incoming call latching service of network operator's decision at this time; If user not signing callee side CAMEL is professional or go into to exhale the incoming call locking of existence activation and/or the incoming call latching service that the network operator determines at this time, carry out directly then that routing decision is judged and transmit above-mentioned routing inquiry request to user's subscribed services device when continuing, or directly transmit above-mentioned routing inquiry request to user's subscribed services device in the CS territory in current decision-making.

Described RPDP is further used for:

RPDP receive after user's subscribed services device is transmitted above-mentioned routing inquiry request that user's subscribed services device returns comprise the refusal response of Reason For Denial the time, according to the concrete reason in the refusal response, determine current routing decision information according to the routing decision relevant information of preserving in current routing policy information and the CS/IMS territory once more, if determined routing decision is to change by IMS territory route, then sends the routing inquiry response and return the virtual roaming number that points to the Interworking gateway MGCF between CS territory and IMS territory to GMSC by this response message to GMSC; If remain in CS territory route, then transmit the response of routing inquiry refusal to GMSC, wherein contain the concrete reason in the refusal response;

GMSC is further used for, according to the current call request of this refusal response reject.

The present invention adopts RPDP interception MAP signaling method to get access to the routing inquiry request that GMSC sends to HLR, according to certain strategy and user same area not whether can and etc. situation, the cross-domain route control of the enhancing of the route that continues when determining it as called in all available business in CS/IMS territory.Use method of the present invention HLR is not changed demand, and do not support CAMEL or the current existence of user to influence under the incoming call locking situation of the incoming call locking of the professional activation that triggers of callee side CAMEL and operator's decision also to realize route control inquiring network.

Description of drawings

The system architecture schematic diagram that Fig. 1 proposes for the present invention;

Fig. 2 realizes striding embodiment one schematic diagram of route control method for the present invention.

Fig. 3 strides embodiment two schematic diagrames of the method for route control for the present invention's realization.

Embodiment

The main thought of the inventive method is: set in advance routing policy decision point (RPDP), and routing policy information is set in RPDP, when GMSC when HLR sends routing inquiry request, RPDP adopts interception MAP signaling method, obtain this routing inquiry request, and with this routing inquiry request as the routing decision query requests, carrying out follow-up routing policy judges and control and treatment, final RPDP will be according to current routing policy information, and the routing decision relevant information of preserving in the CS/IMS territory is determined current routing decision information, and will send to GMSC according to the determined routing iinformation of current routing decision, GMSC carries out route control according to the routing iinformation of receiving.

The routing decision relevant information can be kept at user's subscribed services device, this user's subscribed services device can be the HLR in the CS territory, perhaps the HSS in IMS territory also can be HLR and HSS combination, and user's subscribed services device can be used as an independently physical entity existence.

In order to make RPDP realize the interception function, can distribute the signaling point code in the No.7 signaling signaling network for RPDP as STP, by signalling route configuration in this signaling network, at first be sent to this STP with mailing to the signaling that HLR and HLR return, again by its decision directly forwarding or intercept process.At routing inquiry request, RPDP can adopt dual mode to handle the current routing decision information that obtains.

First kind, be directly with this routing inquiry request as the routing decision query requests, according to current routing policy information, and the routing decision relevant information of preserving in the CS/IMS territory is determined current routing decision information; RPDP sends to GMSC with the determined routing iinformation of current routing decision, and GMSC carries out route control according to the routing iinformation of receiving.

If the routing decision of determining is a CS territory route, RPDP will continue to send to HLR from the routing inquiry request of GMSC; The current place VMSC of HLR and called subscriber gets access to roaming number alternately, and this roaming number is sent to RPDP; RPDP sends the routing inquiry response to GMSC, wherein contains this roaming number, and GMSC routes the call to called place VMSC according to roaming number.

If the routing decision of determining is an IMS territory route, RPDP will directly send the routing inquiry response and return the virtual roaming number that points to the Interworking gateway MGCF between CS territory and IMS territory to GMSC by this response message to GMSC; After GMSC receives the response of this routing inquiry, utilize the wherein virtual roaming number of the Interworking gateway MGCF between CS territory and IMS territory, route the call to MGCF and proceed route in the IMS territory by MGCF.

In this manner, RPDP can only finish control corresponding when GMSC carries out routing inquiry, owing to exist the user to lose wireless connections with network in the CS territory, and the state that HLR even VMSC/VLR preserved does not all also have more news, user state information is to carry out the routing decision judgement in view of the above accurately in order to obtain, and the present invention also comprises on the basis of the routing decision relevant information in CS territory to the HLR inquiring user at RPDP:

After one: HLR receives MAP Any Time Interrogation request from RPDP, initiate MAP to the VMSC at user place the user profile operation is provided, and return the Any Time Interrogation response to RPDP in user profile operation response is provided according to the user profile that VMSC carries.

They are two years old, further, when the VMSC at user place supports the pre-paging function, VMSC is after receiving that MAP from HLR provides the user profile operation requests, provide indication and/or this locality in the user profile operation requests that the paging of initiation to the user is set according to HLR at MAP, and return active user's information to HLR according to the paging result;

By said method, can obtain the relatively accurate User Status and the positional information of the current preservation of VMSC at user place, the solution user has shut down but has not also notified the state information of preserving among the HLR under the HLR situation inaccurate problem; Further, then can really obtain current state accurately of user and positional information by pre-paging.

But, because subnetwork is not supported the pre-paging function, therefore, when current routing policy requires in the CS territory can not paging to forward the IMS territory to during to the user and continues, also can above-mentioned routing policy be set simultaneously by operator of operator or user, utilize existing business setting method to the VMSC at user place corresponding unreachable and/or Call Forwarding No Reply data to be set by HLR, wherein, transferred number points to the Interworking gateway MGCF between CS territory and IMS territory, like this, when RPDP carry out according to its obtainable relatively accurate User Status and positional information that routing decision is judged and control GMSC with call proceeding during to VMSC, if subscriber paging does not have response or the user does not reply, VMSC still can handle according to corresponding preceding commentaries on classics of above-mentioned data-triggered, route the call to the Interworking gateway MGCF between CS territory and IMS territory, and then change the IMS territory over to and continue.

The second way is: RPDP intercepts current GMSC after the routing inquiry request that HLR sends, judge whether this GMSC satisfies the requirement of routing policy decision point inquiry mode, if do not satisfy the requirement of routing policy decision point inquiry mode, RPDP returns the routing iinformation that points to the 2nd GMSC that satisfies the requirement of routing policy decision point inquiry mode to GMSC, GMSC routes the call to the 2nd GMSC, the 2nd GMSC sends routing inquiry request to HLR once more as current GMSC, after RPDP intercepts this routing inquiry request, whether satisfy the judgement of routing policy decision point inquiry mode requirement again; If satisfy the requirement of routing policy decision point inquiry mode, then from HLR, obtain callee side CAMEL Subscription Information T-CSI and provide it to current GMSC, trigger callee side CAMEL business in view of the above for it, and send the routing decision query requests to RPDP with this, after RPDP receives this routing inquiry request, according to current routing policy information, and the routing decision relevant information of preserving in the CS/IMS territory is determined current routing decision information, and will send to current GMSC according to the determined routing iinformation of current routing decision information, current GMSC carries out route control according to the routing iinformation of receiving.The routing iinformation of the above-mentioned GMSC that satisfies the requirement of routing policy decision point inquiry mode be to select arbitrarily from satisfying the GMSC routing iinformation that routing policy decision point inquiry mode requires of preserving of RPDP, or select according to the priority preset mode.And, judge whether this GMSC satisfies particular cell indication in the routing inquiry request that the requirement of routing policy decision point inquiry mode can send by this GMSC and judge whether to possess tenability to CAMEL, or the OPC Origination Point Code that carries in the routing inquiry request that sends of this GMSC incompatible judgement that whether conforms to the signaling point code that disposes among the RPDP.When described current routing decision is an IMS territory route when continuing, comprise the redirection number that points to the Interworking gateway MGCF between CS territory and IMS territory in the described current routing decision information; And after current GMSC received this current routing decision information, current GMSC was according to redirection number, routed the call to MGCF and proceeded to continue in the route in IMS territory by MGCF.

If being defined as CS territory route according to routing decision continues, current GMSC according to the step that the routing iinformation of receiving carries out route control is: current GMSC initiates to suppress the routing inquiry request of callee side CAMEL Subscription Information to HLR, this request once more process as the RPDP of STP and by its according to concrete signaling message type or wherein key message judge that direct transparent transmission is to HLR; HLR sends the request of Providing Roaming Number to the current place VMSC of called subscriber, and with VMSC in the response that Provides Roaming Number the roaming number that returns in the routing inquiry response through as the RPDP of STP and by its according to concrete signaling message type or wherein key message judge that direct transparent transmission returns to current GMSC, current GMSC routes the call to called place VMSC in view of the above.

Further, for fear of invalidation, after RPDP intercepts the routing inquiry request that GMSC mails to HLR, carrying out before whether this GMSC satisfy the requirement of routing policy decision point inquiry mode, RPDP can also be mutual with HLR earlier, confirm any one or its combination in the following situation: user's callee side CAMEL business of whether having contracted, whether the user exists the incoming call latching service of going into to exhale to exist the corresponding incoming call locking that activates and/or network operator's decision at this time; If user not signing callee side CAMEL business or existence go into to exhale the incoming call latching service that exists corresponding incoming call locking that activates and/or network operator to determine at this time, then can adopt mode to tap into walking along the street always and transmit above-mentioned routing inquiry request by the decision-making judgment processing and at decision-making HLR for the time in CS territory route, or directly transmit above-mentioned routing inquiry request to HLR, if after this receive the refusal response that comprises Reason For Denial that HLR returns, then according to the concrete reason in the refusal response, determine current routing decision information according to the routing decision relevant information of preserving in current routing policy information and the CS/IMS territory once more, if determined routing decision is to change by IMS territory route, then sends the routing inquiry response and return the virtual roaming number that points to the Interworking gateway MGCF between CS territory and IMS territory to GMSC by this response message to GMSC; If remain in CS territory route, then, wherein contain the concrete reason in the refusal response to the response of GMSC forwarding routing inquiry refusal, refuse the current call request of response reject by GMSC according to this.

In this manner, owing to be to inquire about current routing decision information by the CAP interface to RPDP by the GMSC that satisfies the requirement of routing policy decision point inquiry mode finally, RPDP can dispose the Sustainable Control of corresponding Basic Call State Model BCSM event detection point realization to part or whole calling procedure by the CAP interface operation of standard.Thereby when after the routing iinformation of determining according to current routing decision information that GMSC provides according to RPDP is called out route control, receiving the call failure message of returning and reporting the events corresponding report, RPDP still can make a strategic decision and issues the indication that call release maybe will be called out again changed course according to current routing policy, and GMSC maybe will call out according to this indication call release and re-route another territory and continue.

For example, lost HLR even VMSC/VLR preserved with the wireless connections of network state all also not more under the news above-mentioned user, when RPDP carry out according to its obtainable User Status and positional information that routing decision is judged and control GMSC with call proceeding during to VMSC, if subscriber paging does not have response or the user does not reply, GMSC can report the corresponding call turkey to RPDP by the event detection point according to the RPDP configuration when receiving the call failure message that VMSC returns, at this moment, RPDP just can make a strategic decision and issues call release or with the indication of call re-direction to the Interworking gateway MGCF between CS territory and IMS territory according to current routing policy, GMSC according to this indication call release or route the call to the CS territory and the IMS territory between Interworking gateway MGCF, and then change the IMS territory over to and continue.

Ginseng is shown in Table 1, and according to existing C AMEL mechanism, for callee side, business control function body (gsmSCF) can dynamically dispose following several event detection point to the GMSC as Service Switching Function entity (gsmSSF):

The CAMEL test point	The DP type	Describe
			Monitoring point (DP) 13, T is busy	EDP-N，EDP-R	Indication receives from the destination switch and meets busy indication, and unreachable or call setup turkey can obtain from HLR for the called subscriber, or obtains from the cause value of ISUP call release
DP14, the T no response	EDP-N，EDP-R	The relevant timer expiry of indication T end no response DP
			DP 15, and T replys	EDP-N，EDP-R	The indication called part receiving call and reply
DP17, T takes out stitches	EDP-N，EDP-R	Receive the indication of taking out stitches from callee or calling party
			DP18, T abandons	EDP-N	Receive the indication of taking out stitches from the calling party in the indicating call handshaking procedure

Table 1

Wherein, when the DP type configuration of certain DP being ordered as gsmSCF is EDP-R, show that then gsmSCF requires GMSC as gsmSSF when detecting this DP point, calling need suspend, and asking gsmSCF to provide the operation indication to GMSC, GMSC is according to the follow-up call treatment of operation indication continuation that receives.When the DP type configuration of certain DP being ordered as gsmSCF is EDP-N, indicate that then gsmSCF requires GMSC as gsmSSF when detecting this DP, only need notify this incident to take place to gsmSCF, do not need to wait for the operation indication that gsmSCF issues, directly calling is handled according to the processing logic of self.

Referring to shown in Figure 1, network configuration provided by the invention comprises HSS, HLR, routing policy decision point (RPDP), GMSC, and wherein, RPDP comprises logical functional entities such as RPDP service logic, gsmSCF, STP.The RPDP service logic, be used to store routing policy, carry out logic determines and and HLR and HSS between carry out data forwarding; GsmSCF is used for connecting with GMSC, and the Signalling exchange of realization and GMSC; STP is used for GMSC and HLR connects, and realizes Signalling exchange with GMSC and HLR.HSS links to each other with the RPDP service logic by interface 8; HLR is by interface 6 and linking to each other with the RPDP service logic, links to each other with STP among the RPDP by interface 3b; STP among the RPDP links to each other with GMSC by interface 3a, and the gsmSCF among the RPDP links to each other with GMSC by interface 5.Simultaneously, RPDP provides interface 13 to OSS, and provides interface 14 to the user.Wherein, interface 13 is used to receive the operator of operator operation signal, the policy information of self preserving is increased, deletes, inquires about, preserves and revises, and interface 14 is used to receive user's operation signal, and the policy information of self preserving is increased, deletes, inquires about, preserves and revises.The setup requests that GMSC receives from the CS territory by interface 1.Described GMSC communicates by letter with RPDP by CAMEL Application Part interface and/or MAP interface.HLR/HSS and RPDP adopt MAP to communicate and/or HSS and RPDP between adopt Diameter to communicate.For above-mentioned two kinds of different modes, the processing procedure of HSS/HLR, RPDP, GMSC is also inequality.

For first kind of mode, HSS/HLR is used to preserve IMS/CS territory user contracting data and user's current state/positional information, for RPDP provides described IMS/CS the user profile in territory.RPDP, be used for when intercepting the routing inquiry request of GMSC or HSS/HLR, utilize the current routing policy and the called user information among the HSS/HLR of self preserving to determine current routing decision information, and will return to GMSC according to the routing iinformation that described current routing decision information is determined.GMSC sends routing inquiry request to HLR, after receiving the current routing decision inquiry response that RPDP returns, carries out route control according to the current routing decision information that RPDP returns.

For the above-mentioned second way, HSS/HLR, be used to preserve IMS/CS territory user contracting data and user's current state/positional information, for RPDP provides described IMS/CS the user profile in territory, and the routing inquiry request of transmitting according to RPDP provides the routing inquiry object information; RPDP is used to tackle the routing inquiry request that current GMSC sends to HLR, determine whether this GMSC satisfies the requirement of routing policy decision point inquiry mode, when GMSC satisfies the requirement of routing policy decision point inquiry mode, from HLR, inquire about callee side CAMEL Subscription Information T-CSI and offer GMSC, when GMSC does not satisfy the requirement of routing policy decision point inquiry mode, provide the routing iinformation that points to the GMSC that satisfies the requirement of routing policy decision point inquiry mode for this GSMC; And after receiving the routing decision query requests of the GMSC transmission of satisfying the requirement of routing policy decision point inquiry mode, utilize the current routing policy and the called user information among the HSS/HLR of self preserving to determine current routing decision information, and the current routing decision information that will determine offer GMSC; After GMSC receives setup requests, send routing inquiry request to HLR, and, after receiving that the routing iinformation of the GMSC that routing policy decision point inquiry mode requires is satisfied in sensing that RPDP provides, route the call to the GMSC that this satisfies the requirement of routing policy decision point inquiry mode; Obtain and offer user's callee side CAMEL Subscription Information T-CSI of GMSC from HLR according to RPDP, trigger callee side CAMEL business, and send the routing decision query requests to RPDP with this, and, after receiving the current routing decision inquiry response that RPDP returns, carry out route control according to the current routing decision information that RPDP returns.

Fig. 2 is the circuit domain calling, employing mode one, and promptly the signaling catching mode is finished the schematic flow sheet of cross-domain route control.

Referring to shown in Figure 2, the detailed process of present embodiment is as follows:

Step 201:CS territory GMSC receives the setup requests of calling, sends routing inquiry request to HLR.RPDP as STP tackles this routing inquiry request, and it is directly sent to RPDP as the routing decision query requests.

After step 202～204:RPDP receives this routing decision query requests, according to current routing policy needs alternatively respectively with HLR and HSS interactive query user relevant information in CS territory and IMS territory, and determine routing decision according to relevant information and current strategies that inquiry obtains.

Optionally, if in step 202 RPDP be by the MAP Any Time Interrogation to the HLR inquiring user in the relevant information in CS territory, then HLR can be after receiving this MAP Any Time Interrogation request, initiate MAP to the VMSC at user place the user profile operation is provided, and return the Any Time Interrogation response to RPDP in user profile operation response is provided according to the user profile that VMSC carries.

Further, when VMSC supports the pre-paging function, VMSC is after receiving that MAP from HLR provides the user profile operation requests, provide indication and/or this locality in the user profile operation requests that the paging of initiation to the user is set according to HLR at MAP, and return active user's information to HLR according to the paging result;

Provide user profile operation and pre-paging can really obtain current state accurately of user and positional information by above MAP, but, because subnetwork is not supported the pre-paging function, therefore, when current routing policy requires in the CS territory can not paging to forward the IMS territory to during to the user and continues, also can above-mentioned routing policy be set simultaneously by operator of operator or user, utilize existing business setting method to VLR corresponding unreachable and/or Call Forwarding No Reply data to be set by HLR, wherein, transferred number points to the Interworking gateway MGCF between CS territory and IMS territory, like this, when RPDP carry out according to its obtainable relatively accurate User Status and positional information that routing decision is judged and control GMSC with call proceeding during to VMSC, if subscriber paging does not have response or the user does not reply, VMSC just can handle according to corresponding preceding commentaries on classics of above-mentioned data-triggered, route the call to the Interworking gateway MGCF between CS territory and IMS territory, and then change the IMS territory over to and continue.

Step 205～206: if the current routing policy of determining is for continuing in IMS territory route, then send the routing inquiry response and return the virtual roaming number that points to the Interworking gateway MGCF between CS territory and IMS territory to GMSC by this response message to GMSC, after GMSC receives this routing inquiry response, utilize the wherein virtual roaming number of the Interworking gateway MGCF between CS territory and IMS territory, route the call to MGCF and proceed route in the IMS territory, process ends by MGCF.

Step 207～212: if the current strategies of determining is a CS territory route, then RPDP will continue to send to HLR from the routing inquiry request of GMSC, HLR sends the request of Providing Roaming Number to the current place VMSC of called subscriber, after obtaining roaming number that VMSC returns, send the routing inquiry response by RPDP to GMSC as STP, wherein contain the roaming number that VMSC returns, GMSC routes the call to called place VMSC according to roaming number.

And, in said process, if the current routing decision that RPDP determines is CS territory route and continues to send to HLR from the routing inquiry request of GMSC, if HLR judges that according to local record the user goes into to exhale to exist the incoming call latching service of the corresponding incoming call locking that activates and/or network operator's decision this moment at this time, then signatory according to the user, the response of routing inquiry refusal is sent to RPDP, wherein contain Reason For Denial; After RPDP receives the routing inquiry refusal response that HLR returns, according to the concrete reason in the refusal response, once more according to current routing policy information, and the routing decision relevant information of preserving in the CS/IMS territory is determined current routing decision information, if determined routing decision is to change by IMS territory route, then send the routing inquiry response and return the virtual roaming number that points to the Interworking gateway MGCF between CS territory and IMS territory to GMSC by this response message to GMSC, if remain in CS territory route, then transmit the response of routing inquiry refusal to GMSC, wherein contain the concrete reason in the refusal response, GMSC is according to the current call request of this refusal response reject.

Figure 3 shows that the circuit domain calling, employing mode two, promptly signaling catching and CAMEL trigger the schematic flow sheet that compound mode is finished cross-domain route control.

GMSC1 in the step 300:CS territory receives the setup requests of calling, sends routing inquiry request to HLR.

Step 301～302: the RPDP as STP tackles this routing inquiry request, and with it directly as the routing decision query requests.After RPDP receives this routing decision query requests, judge: the local configuration of the tenability that GMSC carries in routing inquiry message, GMSC signalling point and RPDP CAMEL according to a kind of or its combination in the following situation; Determine whether GMSC1 satisfies the requirement of routing policy decision point inquiry mode, as: whether have the CAMEL tenability,, then directly return the routing iinformation that points to the GMSC2 that satisfies the requirement of routing policy point inquiry mode to GMSC1 if do not satisfy.

Wherein, the above-mentioned step that satisfies the requirement of routing policy decision point inquiry mode that judges whether can comprise: RPDP is mutual with HLR earlier, confirm any one or its combination in the following situation: user's callee side CAMEL business of whether having contracted, whether the user exists the incoming call latching service of going into to exhale to exist the corresponding incoming call locking that activates and/or network operator's decision at this time; If user not signing callee side CAMEL business or existence go into to exhale the incoming call latching service that exists corresponding incoming call locking that activates and/or network operator to determine at this time, then adopt first kind of mode directly to carry out the routing decision judgment processing, if determine in CS territory route and directly after HLR transmits above-mentioned routing inquiry request, receive the refusal response that comprises Reason For Denial that HLR returns, then can also be according to the concrete reason in the refusal response, determine current routing decision information according to the routing decision relevant information of preserving in current routing policy information and the CS/IMS territory once more, if determined routing decision is to change by IMS territory route, then sends the routing inquiry response and return the virtual roaming number that points to the Interworking gateway MGCF between CS territory and IMS territory to GMSC by this response message to GMSC; If remain in CS territory route, then, wherein contain the concrete reason in the refusal response to the response of GMSC forwarding routing inquiry refusal, refuse the current call request of response reject by GMSC according to this.

Step 303:GMSC1 routes the call to GMSC2 according to this routing iinformation.

Step 304～305:GMSC2 number make is according to a preconcerted arrangement recovered called number, and then sends routing inquiry request to HLR.

Step 306～311: the RPDP as STP tackles this routing inquiry request, and with it directly as the routing decision query requests.After RPDP receives this routing decision query requests, judge according to any one or its combination in the following situation whether GMSC2 satisfies routing policy decision point inquiry mode and require: the local configuration of the tenability that GMSC2 carries, GMSC signalling point and RPDP to CAMEL in routing inquiry message; If meet the demands, then the routing inquiry request with GMSC2 continues to pass to HLR, and HLR returns callee side CAMEL Subscription Information T-CSI by the RPDP as STP to GMSC2 according to the user is signatory;

Step 312～313: the GMSC2 that possesses the CAMEL tenability triggers callee side CAMEL business according to this callee side CAMEL Subscription Information, sends routing decision query requests (IDP) to the RPDP as gsmSCF.

Step 314～316: after receiving this routing decision query requests (IDP) as the RPDP of gsmSCF, according to current routing policy needs alternatively respectively with HLR and HSS interactive query user relevant information in CS territory and IMS territory, and determine routing decision according to relevant information and current strategies that inquiry obtains.

Step 317～318: when institute definitely routing decision be (routing decision 1) during in IMS territory route, RPDP as gsmSCF returns the redirection number that points to the Interworking gateway MGCF between CS territory and IMS territory by CONNECT message to GMSC2, GMSC2 carries out routing decision 1 in view of the above, routes the call to MGCF and proceeds route in the IMS territory by MGCF.

Step 319～328: when routing decision is (routing decision 2) when continuing in CS territory route, RPDP as gsmSCF continues according to original called number route by CONTINUE message indication GMSC2, GMSC2 carries out routing decision 2 in view of the above, initiate to suppress the routing inquiry request of callee side CAMEL Subscription Information to HLR, this request once more through as the RPDP of STP and by its according to concrete signaling message type or wherein key message judge that direct transparent transmission is to HLR, HLR sends the request of Providing Roaming Number to the current place VMSC of called subscriber, and with VMSC in the response that Provides Roaming Number the roaming number that returns in the routing inquiry response through as the RPDP of STP and by its according to concrete signaling message type or wherein key message judge that direct transparent transmission returns to GMSC2, GMSC2 routes the call to called place VMSC in view of the above.

Optionally, at RPDP before GMSC issues CONTINUE or CONNECT, RPDP can issue RRBE (request reports the Basic Call State Model BCSM incident) operation to the GMSC as gsmSSF according to current routing policy information and/or routing decision, carry the event detection point of configuration in the operation, as dispose the DP13 that the DP type is EDP-R, or DP14, or DP15, or DP17 or its any combination, or configuration DP type is the DP18 of EDP-N, when receiving that as the GMSC of gsmSSF call failure message of returning thereby the incident that detects configuration are taken place in the follow-up flow process, report the events corresponding report to gsmSCF, gsmSCF controls follow-up call flow according to the event report that receives, and indicates the GMSC call release or carries out the call re-direction processing.

The invention provides a kind of when the user selects to use the terminal access to IMS territory of different access technologies or CS territory, according to certain strategy and user same area not whether can and etc. situation determine the cross-domain route control system and the method for its enhancing of the route that continues during called in all available business as the CS/IMS territory, this system and method has considered to adapt to the demand of different network application environments.

Claims (37)

1, a kind of method that realizes route control is characterized in that set in advance routing policy decision point RPDP, this method is further comprising the steps of:

A. after GMSC (gateway mobile switching center) GMSC receives setup requests in the circuit domain, send routing inquiry request to attaching position register HLR;

B. described RPDP tackles this routing inquiry request, and as the routing decision query requests, according to current routing policy information, and the routing decision relevant information of preserving in the CS/IMS territory is determined current routing decision with this routing inquiry request;

C. described RPDP will send to described GMSC according to the determined routing iinformation of current routing decision, and described GMSC carries out route control according to the routing iinformation of receiving.

2, method according to claim 1 is characterized in that, the current routing decision of determining among the step B is a CS territory route, and then step C comprises:

C11, described RPDP will continue to send to described HLR from the routing inquiry request of described GMSC;

C12, described HLR and the current place of called subscriber Visited Mobile Switching Center VMSC obtain roaming number alternately, and this roaming number is sent to described RPDP by the routing inquiry response;

C13, described RPDP transmit the routing inquiry response to described GMSC, wherein contain described roaming number, and GMSC routes the call to called place VMSC according to described roaming number.

3, method according to claim 1 is characterized in that, the current routing decision of determining among the step B is a CS territory route, and the user goes into to exhale to exist the incoming call locking that activates and/or the incoming call latching service of network operator's decision at this time, and then step C comprises:

C21, described RPDP will continue to send to described HLR from the routing inquiry request of described GMSC;

C22, described HLR are signatory according to the user, and the response of routing inquiry refusal is sent to described RPDP, wherein contain Reason For Denial;

C23, described RPDP is according to the concrete reason in the refusal response, once more according to current routing policy information, and the routing decision relevant information of preserving in the CS/IMS territory is determined current routing decision, if determined routing decision is to change by IMS territory route, then send the routing inquiry response and return the virtual roaming number that points to the Interworking gateway MGCF between CS territory and IMS territory to described GMSC by this response message to described GMSC, if remain in CS territory route, then transmit the response of routing inquiry refusal to described GMSC, wherein contain the concrete reason in the refusal response, described GMSC is according to the current call request of this refusal response reject.

4, method according to claim 1 is characterized in that, the current routing decision of determining among the step B is an IMS territory route, and then step C comprises:

C31, described RPDP directly send the routing inquiry response and return the virtual roaming number that points to the Interworking gateway MGCF between CS territory and IMS territory to described GMSC by this response message to described GMSC;

C32, described GMSC utilize described virtual roaming number after receiving the response of this routing inquiry, route the call to described MGCF and proceed route in the IMS territory by described MGCF.

5, method according to claim 1 is characterized in that, the relevant information of routing decision described in the step B is that described RPDP inquires about from HLR/HSS and obtains.

6, method according to claim 5 is characterized in that, described RPDP adopts MAP from HLR/HSS inquiry routing decision relevant information, and described routing decision relevant information is to adopt the operation of MAP Any Time Interrogation to obtain;

Perhaps, adopt Diameter to communicate between described HSS and described RPDP, described routing decision relevant information is to adopt Diameter user data requests UDR/UDA operation, or Diameter user registration state inquiry UAR/UAA operation, or Diameter place information inquiry LIR/LIA operation realizes.

7, method according to claim 6, it is characterized in that, described routing decision relevant information adopts the operation of MAP Any Time Interrogation to obtain, and, described HLR is after receiving the request of MAP Any Time Interrogation, initiate MAP to the VMSC at user place the user profile operation is provided, and return the Any Time Interrogation response to described RPDP in user profile operation response is provided according to the user profile that VMSC carries.

8, method according to claim 7, it is characterized in that, after the VMSC at user place receives that MAP from HLR provides the user profile operation requests, MAP according to described HLR provides indication and/or this locality in the user profile operation requests that the paging of initiation to the user is set, and returns active user's information according to the paging result to described HLR.

9, method according to claim 1 is characterized in that, the relevant information of routing decision described in the step B is that described RPDP preserves in advance.

10, method according to claim 9 is characterized in that, further comprises:

User's information relevant with routing decision that HLR/HSS initiatively upgrades described RPDP and preserved by HLR/HSS and interface between described RPDP in the CS/IMS territory.

11, method according to claim 10, it is characterized in that described HLR/HSS and described RPDP interface adopt MAP to communicate alternately, and, it is to operate realization by MAP location update operations, MAP insertion/deletion user that the active of described routing decision relevant information is upgraded

Perhaps, adopt Diameter to communicate between described HSS and described RPDP, the described renewal user that RPDP the preserved information relevant with routing decision in the CS/IMS territory adopts Diameter server to distribute the SAR/SAA operation, or Diameter upgrades user contracting data PPR/PPA operation, or Diameter booking reader's data change SNR/SNA and notice user data change PNR/PNA operation realize.

12, method according to claim 1, it is characterized in that, the described routing policy information of step B sets in advance at described RPDP, and, be to be provided with by the interface between user and described RPDP by the interface between OSS OSS and described RPDP and/or by the user by the operator of operator in advance; And,

When routing policy information described in the step B comprises: when can not paging in the CS territory under user situation, forwarding the IMS territory to and continuing, operator of operator or user are provided with corresponding unreachable and/or Call Forwarding No Reply data by HLR to the VMSC at user place simultaneously, wherein, transferred number points to the Interworking gateway MGCF between CS territory and IMS territory.

13, a kind of method that realizes route control is applied to comprise in the route control procedure in IMS territory and CS territory that it is characterized in that, set in advance routing policy decision point RPDP, this method is further comprising the steps of:

A. described RPDP intercepts current GMSC after the routing inquiry request that HLR sends, and judges whether this GMSC satisfies the requirement of routing policy decision point inquiry mode, if this GMSC satisfies described requirement, and execution in step B then, otherwise, execution in step E;

B. described RPDP obtains callee side CAMEL Subscription Information T-CSI from described HLR, and this callee side CAMEL Subscription Information T-CSI returned to current GMSC, current GMSC triggers the callee side business according to T-CSI, and sends the routing decision query requests to described RPDP;

C. after described RPDP received this routing decision query requests, according to current routing policy information, and the routing decision relevant information of preserving in the CS/IMS territory was determined current routing decision; Described RPDP will send to current GMSC according to the determined routing iinformation of current routing decision;

D. current GMSC carries out route control, process ends according to the routing iinformation of receiving;

E. described RPDP returns the routing iinformation that points to the 2nd GMSC that satisfies the requirement of routing policy decision point inquiry mode to current GMSC, current GMSC routes the call to the 2nd GMSC, the 2nd GMSC sends routing inquiry request, execution in step A as current GMSC to described HLR.

14, method according to claim 13 is characterized in that, intercepts current GMSC after the routing inquiry request that described HLR sends in steps A, is judging this GMSC further comprises before whether satisfying the requirement of routing policy decision point inquiry mode:

A1. described RPDP and described HLR are mutual, confirm any one or its combination in the following situation: user's callee side CAMEL business of whether having contracted, and whether the user goes into to exhale to exist the incoming call locking that activates and/or the incoming call latching service of network operator's decision at this time; If user not signing callee side CAMEL is professional or go into to exhale the incoming call locking of the corresponding activation of existence and/or the incoming call latching service that the network operator determines at this time, carry out directly then that routing decision is judged and transmit above-mentioned routing inquiry request to described HLR in CS territory route the time at determined current routing decision, or directly transmit above-mentioned routing inquiry request to described HLR, otherwise proceed the judgement whether this GMSC satisfies the requirement of routing policy decision point inquiry mode, and carry out different processing according to judged result;

A2. after transmitting above-mentioned routing inquiry request, if receive the refusal response that comprises Reason For Denial that described HLR returns, then according to the concrete reason in the refusal response, determine current routing decision information according to the routing decision relevant information of preserving in current routing policy information and the CS/IMS territory once more, if determined routing decision is to change by IMS territory route, then send the routing inquiry response and return the virtual roaming number that points to the Interworking gateway MGCF between CS territory and IMS territory, process ends to described GMSC by this response message to described GMSC; If remain in CS territory route, then transmit the response of routing inquiry refusal to described GMSC, described GMSC is according to the current call request of this refusal response reject, process ends.

15, method according to claim 13 is characterized in that, the current routing decision of determining among the step C is that IMS territory route continues or CS territory route continues,

When described current routing decision is an IMS territory route when continuing, further comprise in the current routing decision described in the step C: the redirection number that points to the Interworking gateway MGCF between CS territory and IMS territory; The current GMSC of step D according to the step that the routing iinformation of receiving carries out route control is: current GMSC is according to redirection number, routes the call to MGCF and proceeded to continue in the route in IMS territory by MGCF;

When described current routing decision is that CS territory route continues, then the current GMSC of step D according to the step that the routing iinformation of receiving carries out route control is:

D1, current GMSC initiate to suppress the routing inquiry request of callee side CAMEL Subscription Information to described HLR, the RPDP as signaling transfer point STP is passed through in this request once more, and by this RPDP according to concrete signaling message type or wherein key message judge that direct transparent transmission is to described HLR;

D2, described HLR send the request of Providing Roaming Number to the current place VMSC of called subscriber, and with described VMSC in the response that Provides Roaming Number the roaming number that returns in the routing inquiry response through as the RPDP of STP and by its according to concrete signaling message type or wherein key message judge that direct transparent transmission returns to current GMSC, current GMSC routes the call to called place VMSC in view of the above.

16, method according to claim 13, it is characterized in that, satisfy described in the step e requirement of routing policy decision point inquiry mode the 2nd GMSC routing iinformation be to select arbitrarily from satisfying the GMSC routing iinformation that routing policy decision point inquiry mode requires of preserving of described RPDP self, or select according to the priority preset mode.

17, method according to claim 13, it is characterized in that, judge described in the steps A that whether this GMSC satisfies the requirement of routing policy decision point inquiry mode is that the particular cell indication judges whether to possess tenability to CAMEL in the routing inquiry request that sends by this GMSC, or the OPC Origination Point Code that carries in the routing inquiry request that sends of this GMSC incompatible judgement that whether conforms to the signaling point code that disposes among the described RPDP.

18, method according to claim 13 is characterized in that, the relevant information of routing decision described in the step C is that described RPDP inquires about from the HLR/HSS in CS/IMS territory and obtains.

19, method according to claim 18 is characterized in that, described RPDP adopts the HLR/HSS inquiry routing decision relevant information of MAP from the CS/IMS territory, and described routing decision relevant information is to adopt the operation of MAP Any Time Interrogation to obtain;

Perhaps, adopt Diameter to communicate between described HSS and described RPDP, described routing decision relevant information is to adopt Diameter user data requests UDR/UDA operation, or Diameter user registration state inquiry UAR/UAA operation, or Diameter place information inquiry LIR/LIA operation realizes.

20, method according to claim 13 is characterized in that, the relevant information of routing decision described in the step C is that described RPDP preserves in advance.

21, method according to claim 20 is characterized in that, this method further comprises:

User's information relevant with routing decision that HLR/HSS initiatively upgrades described RPDP and preserved by described HLR/HSS and interface between described RPDP in the CS/IMS territory.

22, method according to claim 21, it is characterized in that described HLR/HSS and described RPDP interface adopt MAP to communicate alternately, and, described routing decision relevant information is to operate realization by MAP location update operations, MAP insertion/deletion user

Perhaps, adopt Diameter to communicate between described HSS and described RPDP, the information that the user that the described RPDP of described renewal is preserved is relevant with routing decision in the CS/IMS territory adopts Diameter server to distribute the SAR/SAA operation, or Diameter upgrades user contracting data PPR/PPA operation, or Diameter booking reader's data change SNR/SNA and notice user data change PNR/PNA operation realize.

23, a kind of system that realizes route control is applied to receive in the CS territory in the route control procedure of calling, it is characterized in that this system comprises: user's subscribed services device, RPDP and GMSC, and wherein, RPDP links to each other with GMSC with described user's subscribed services device,

Described user's subscribed services device is used to preserve IMS/CS territory user contracting data and user's current state/positional information, for described RPDP provides described IMS/CS the user profile in territory;

Described RPDP, when intercepting the GMSC routing inquiry request, determine current routing decision according to the called user information that current routing policy and described user's subscribed services device provide, and will return to described GMSC according to the routing iinformation that described current routing decision is determined;

Described GMSC is used for sending routing inquiry request to described user's subscribed services device, and after receiving the routing inquiry response that described RPDP returns, the routing iinformation that returns according to described RPDP carries out route control.

24, system according to claim 23 is characterized in that, described user's subscribed services device is the HLR in the CS territory, or is the HSS in IMS territory, or is HLR and HSS combination, or is an independently physical entity.

25, system according to claim 23 is characterized in that, when the current routing decision of determining was CS territory route, described routing iinformation was a roaming number,

Described RPDP is further used for the routing inquiry request from GMSC is continued to send to described user's subscribed services device, and the roaming number that will obtain from described user's subscribed services device sends to described GMSC by the routing decision inquiry response;

Described user's subscribed services device after being further used for receiving the routing inquiry request of described RPDP, gets access to roaming number alternately with the current place VMSC of called subscriber, and this roaming number is sent to described RPDP.

26, system according to claim 23 is characterized in that, when the current routing decision of determining was IMS territory route, described routing iinformation was the virtual roaming number of the Interworking gateway MGCF between sensing CS territory and IMS territory,

Described RPDP is further used for directly sending the routing inquiry response and returning the virtual roaming number that points to the Interworking gateway MGCF between CS territory and IMS territory to described GMSC by this response message to described GMSC;

Described GMSC after being used to receive the routing inquiry response of described RPDP transmission, utilizes the virtual roaming number that points to the Interworking gateway MGCF between CS territory and IMS territory, routes the call to described MGCF.

27, system according to claim 23 is characterized in that, when the current routing decision of determining is a CS territory route, and the user is when going into to exhale to exist the incoming call latching service of the incoming call locking that activates and/or network operator's decision at this time, then

Described RPDP, be further used for continuing to send to described user's subscribed services device from the routing inquiry request of described GMSC, and the concrete reason in the refusal that returns according to the described user's subscribed services device response, once more according to current routing policy information, and the routing decision relevant information of preserving in the CS/IMS territory is determined current routing decision information; If determined routing decision is to change by IMS territory route, then send the routing inquiry response and return the virtual roaming number that points to the Interworking gateway MGCF between CS territory and IMS territory to described GMSC by this response message to described GMSC, if remain in CS territory route, then transmit the response of routing inquiry refusal, wherein contain the concrete reason in the refusal response to described GMSC;

Described GMSC, after being used to receive the routing inquiry response of described RPDP transmission, the virtual roaming number that utilize to point to the Interworking gateway MGCF between CS territory and IMS territory routes the call to MGCF and proceeds route in the IMS territory by MGCF, after perhaps being used to receive the routing inquiry refusal response of described RPDP, refuse current call request;

Described user's subscribed services device, signatory after being further used for receiving the routing inquiry request of described RPDP according to the user, the response of routing inquiry refusal is sent to described RPDP, wherein contain Reason For Denial.

28, system according to claim 23, it is characterized in that, described RPDP further comprises the interface with OSS OSS, is used to receive the operator of operator operation signal, and the policy information of self preserving is increased, deletes, inquires about, preserves and revises.

29, system according to claim 23 is characterized in that, described RPDP further comprises the interface with the user, is used to receive user's operation signal, and the policy information of self preserving is increased, deletes, inquires about, preserves and revises.

30, system according to claim 23 is characterized in that, adopts MAP to communicate between described GMSC and described RPDP, adopts MAP and/or Diameter to communicate between described user's subscribed services device and described RPDP.

31, a kind of system that realizes route control is applied to receive in the CS territory in the route control procedure of calling, it is characterized in that, this system comprises: user's subscribed services device, RPDP and GMSC, wherein, described RPDP links to each other with described GMSC with described user's subscribed services device

Described user's subscribed services device, be used to preserve IMS/CS territory user contracting data and user's current state/positional information, for described RPDP provides described IMS/CS the user profile in territory, and the routing inquiry request of transmitting according to described RPDP provides the routing inquiry object information;

Described RPDP, be used to tackle the routing inquiry request that current GMSC sends to described user's subscribed services device, determine whether current GMSC satisfies the requirement of routing policy decision point inquiry mode, when current GMSC satisfies the requirement of routing policy decision point inquiry mode, from described user's subscribed services device, inquire about callee side CAMEL Subscription Information T-CSI and offer current GMSC, when current GMSC does not satisfy the requirement of routing policy decision point inquiry mode, provide the routing iinformation that points to the 2nd GMSC that satisfies the requirement of routing policy decision point inquiry mode for current GSMC; And after receiving the routing decision query requests of the current GMSC transmission of satisfying the requirement of routing policy decision point inquiry mode, determine current routing decision information according to the called user information that current routing policy and described user's subscribed services device provide, and the current routing decision information that will determine offers described current GMSC;

Described GMSC, after being used to receive setup requests, send routing inquiry request as current GMSC to described user's subscribed services device, and, after receiving that the routing iinformation of the 2nd GMSC that routing policy decision point inquiry mode requires is satisfied in sensing that RPDP provides, route the call to the 2nd GMSC that this satisfies the requirement of routing policy decision point inquiry mode; Obtain and offer user's callee side CAMEL Subscription Information T-CSI of current GMSC from described user's subscribed services device according to RPDP, trigger callee side CAMEL business, and send the routing decision query requests to RPDP with this, and, after receiving the current routing decision inquiry response that RPDP returns, carry out route control according to the current routing decision information that RPDP returns.

32, system according to claim 31 is characterized in that, described user's subscribed services device is the HLR in the CS territory, or is the HSS in IMS territory, or is HLR and HSS combination, or is physical entity independently.

33, system according to claim 31, it is characterized in that described RPDP further comprises the interface with OSS OSS, be used for conversation strategy information, receive the operator of operator operation signal, the policy information of self preserving is increased, deletes, inquires about, preserves and revises.

34, system according to claim 31 is characterized in that, described RPDP further comprises the interface with the user, is used for conversation strategy information, receives user's operation signal, and the policy information of self preserving is increased, deletes, inquires about, preserves and revises.

35, system according to claim 31, it is characterized in that, between described GMSC and RPDP by CAMEL Application Part and MAP interface communication, and, in the following ways any one or its combination: described user's subscribed services device and RPDP adopt MAP to communicate, when described user's subscribed services device is HSS or when comprising HSS, adopt Diameter to communicate between HSS and RPDP.

36, system according to claim 31 is characterized in that, described PRDP tackles current GMSC after the routing inquiry request that user's subscribed services device sends, and whether satisfies the requirement of routing policy decision point inquiry mode at definite this GMSC and takes a step forward and be used for:

Mutual with user's subscribed services device, confirm any one or its combination in the following situation: user's callee side CAMEL business of whether having contracted, whether the user goes into to exhale to exist the incoming call locking that activates and/or the incoming call latching service of network operator's decision at this time; If user not signing callee side CAMEL is professional or go into to exhale the incoming call locking of existence activation and/or the incoming call latching service that the network operator determines at this time, carry out directly then that routing decision is judged and transmit above-mentioned routing inquiry request to user's subscribed services device when continuing, or directly transmit above-mentioned routing inquiry request to user's subscribed services device in the CS territory in current decision-making.

37, system according to claim 36 is characterized in that, described RPDP is further used for:

RPDP receive after user's subscribed services device is transmitted above-mentioned routing inquiry request that user's subscribed services device returns comprise the refusal response of Reason For Denial the time, according to the concrete reason in the refusal response, determine current routing decision information according to the routing decision relevant information of preserving in current routing policy information and the CS/IMS territory once more, if determined routing decision is to change by IMS territory route, then sends the routing inquiry response and return the virtual roaming number that points to the Interworking gateway MGCF between CS territory and IMS territory to GMSC by this response message to GMSC; If remain in CS territory route, then transmit the response of routing inquiry refusal to GMSC, wherein contain the concrete reason in the refusal response;

GMSC is further used for, according to the current call request of this refusal response reject.

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