CN101127698A - System and method for realizing service-based routing selection in packet domain - Google Patents
System and method for realizing service-based routing selection in packet domain Download PDFInfo
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- CN101127698A CN101127698A CNA2006101275100A CN200610127510A CN101127698A CN 101127698 A CN101127698 A CN 101127698A CN A2006101275100 A CNA2006101275100 A CN A2006101275100A CN 200610127510 A CN200610127510 A CN 200610127510A CN 101127698 A CN101127698 A CN 101127698A
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Abstract
The utility model discloses a service based routing system and method for packet switched domains, which relates to the communication technology and aims to solve the problem of complex configuration of terminal services and inconvenient service application when the users develop a plurality of businesses in packet networks. The utility model introduces service routing decision function entity for routing decision-making based on service ; the routing strategy function entity is a function entity executed by routing strategies; the service routing strategy database stores the service-based strategy database; the service application network element provides the application network elements for services. The utility model is a system framework and methodology in which the service-based routing strategy can be achieved and determined through the interactions between the service routing decision function entity and the routing strategy execution entity, and between the service routing strategy database and the application network element, and then transmitted to REF for implementation. The utility model provides the optimal path routing and policy routing control of the service access for different services to avoid the troubles of complex terminal configuration while adopting APN method, and other methods available.
Description
Technical field
The present invention relates to the packet domain in the mobile communication technology, be specifically related to a kind of packet switch domain service of realizing and insert the system and method for Route Selection.
Background technology
The 3GPP packet switch domain service is numerous, and the different different business objective nets of service needed visit need be taked different service access mode and routing mode.The 3GPP packet domain realizes professional Route Selection by APN APN (Access Point Name).
APN is made up of two parts, a part is the network identity that sign needs the target network of visit, another part is the sign of operator, be exemplified below: internet.mnc000.mcc460.gprs, wherein the objective network that need visit of internet representative of consumer is the internet network, and it is China Mobile that mnc000.mcc460.gprs represents operator.
Mobile phone or IMSI (International Mobile Subscriber Identity the user, international mobile subscriber identity) the general configuration target network identity part that only needs in the card, operator's identification division is by SGSN (Serving GPRS SupportNode, service type GPRS Support Node) polishing.When polishing operator identified, SGSN analyzed user's home-operator information from the IMSI number, obtained the information of roaming place operator from the network configuration of SGSN.In user's HLR (HomeLocation Register, home location register), dispose the sign that whether allows the user to insert from the roaming place.The user only need dispose the network identity of the target network that needs visit, whether allow the sign that inserts from the roaming place by SGSN to the analysis of operator sign and in conjunction with the user, just can realize that the user inserts or from the selection of homing GGSN access from roaming place GGSN (gateway type GPRS Support Node) when carrying out the internet roaming of different operators.
Simultaneously, GGSN disposes the mode of the access corresponding service network of the professional required employing of adopting this APN access according to this APN, as adopt which type of VPN (Virtual Private Network, VPN (virtual private network)) mode, whether need to carry out RADIUS (Remote Authentication Dial In User Service, remote authentication dial-in user service) which kind of address distribution etc. is adopted in authentication.GGSN selects the mode of access business network according to APN.
This mode, realized to a certain extent carrying out route selection method based on class of service, but since the APN that the user adopts need on user terminal, be configured, when the class of business of carrying out as the user is a lot, can cause the terminal configuration complexity, the professional difficulty of using.Simultaneously, there is flexibility, is not easy in other packet network, promote based on the Route Selection mode of APN.
Summary of the invention
In order to overcome above-mentioned defective, the object of the present invention is to provide a kind of realization packet domain of being convenient in other packet network, to promote to carry out the system and method for Route Selection based on business.
For achieving the above object, a kind of system that realizes packet domain based on the Route Selection of business of the present invention comprises:
Routing policy is carried out functional entity, professional routing decision functional entity, professional routing policy database and service application network element;
Wherein, routing policy is carried out functional entity and is used to obtain user's related service information and carries out routing policy based on business; Professional routing decision functional entity is used for determining the related service routing policy and giving routing policy execution functional entity with it according to user's related service information; Professional routing policy database is preserved based on the routing policy of business and is provided and professional routing decision functional entity interactive function; The service application network element is used for obtaining of conversation-based service feature and attribute for professional routing decision provides professional application network element.
Further, above-mentioned realization packet domain, also comprises when the 3GPP PS system based on the system applies of the Route Selection of business:
The service type GPRS Support Node is used for the service request that receiving terminal is initiated;
Gateway type GPRS Support Node/routing policy is carried out functional entity, is used for receiving creating service request and sending professional routing policy request to professional routing decision.
Further, above-mentioned realization packet domain, also comprises when the SAE System Architecture Evolution based on the system applies of the Route Selection of business:
The mobile management functional entity is used to finish user's mobile management;
User entity/routing policy is carried out functional entity, is used for the route of packet and the execution of forwarding, local ip address distribution, resource and charging policy;
Stride multiple connecting system anchor gateway, be used for being responsible for the IP address assignment of the overall situation, the convert anchor point between different system.
For achieving the above object, a kind of method of routing that realizes packet domain based on non-session service of the present invention may further comprise the steps:
(11) routing policy function executing entity receives the business request information of user terminal, carries in this service request to initiate this professional user ID;
(12) routing policy is carried out functional entity and is initiated professional routing policy request to professional routing decision functional entity, carries user ID and service identification in this business routing policy request;
(13) professional routing decision functional entity is initiated professional routing inquiry request to professional routing policy database, carries user ID and service identification in this business routing inquiry request;
(14) professional routing policy database is replied professional routing inquiry response to professional routing decision functional entity, comprises this user of described user ID correspondence and the pairing available route of this business and the access way tabulation of described service identification correspondence in this response;
(15) professional routing decision functional entity is tabulated according to the available route and the access way of professional routing policy database response, and carries out routing decision in conjunction with network condition;
(16) professional routing decision functional entity is carried out functional entity to routing policy and is sent professional routing policy response, and professional route, access way list information that decision-making is determined send to routing policy execution functional entity;
(17) routing policy is carried out functional entity and is carried out routing policy according to the policy information in the professional routing policy response.
Further, in the described step (12), service identification is analyzed according to the feature of business by routing policy function executing entity, discerns this professional attribute and obtains, and perhaps directly is carried in terminal use's the service request.
Further, when above-mentioned realization packet domain was applied to 3GPP PS system based on the method for routing of non-session service, described step (11) was specially:
(111A) user terminal is initiated PDP to the service type GPRS Support Node and is activated the context service request, carries service identification in this request;
After (112A) the service type GPRS Support Node receives that PDP activates the context service request, carry out functional entity to gateway type GPRS Support Node/routing policy and initiate to create the PDP Context request, carry user ID and service identification in this request;
Described step (12) is specially:
(121A) gateway type GPRS Support Node/routing policy is carried out functional entity and is sent the professional routing policy request of PDP Context to professional routing decision functional entity.
Further, described step (17) is specially:
(171A) gateway type GPRS Support Node/routing policy execution functional entity distributes corresponding IP address according to the routing policy response message that obtains to user terminal, create the incidence relation between user's PDP Context and foundation and tactful routing iinformation, and, comprise the IP address of distributing to user terminal in this response to the response of service type GPRS Support Node answer establishment PDP Context;
(172A) the service type GPRS Support Node is replied to user terminal and is activated PDP Context reception message, carries the IP address of distributing to user terminal in this message;
(173A) user terminal begins to transmit the IP bag, and gateway type GPRS Support Node/routing policy is carried out the transmission of functional entity according to the professional routing policy guides user packet that obtains.
Further, when above-mentioned realization packet domain was applied to the SAE system based on the method for routing of non-session service, described step (11) was specially:
(111B) user terminal is initiated service tunnel to the mobile management functional entity and is set up request, carries user ID and service identification in this request;
After (112B) the mobile management functional entity receives that service tunnel is set up request, carry out functional entity to user entity/routing policy and initiate to create the service tunnel request, carry user ID and service identification in this request;
Described step (12) is specially:
(121B) user entity/routing policy is carried out functional entity and is sent professional routing policy request to professional routing decision functional entity.
Further, described step (17) is specially:
(171B) user entity/routing policy execution functional entity responds to user's distributing IP address according to the routing policy that obtains, and professional route is associated with user's context, replys the establishment service tunnel for simultaneously the mobile management functional entity and responds;
After (172B) the mobile management functional entity is received and created the service tunnel response, reply service tunnel to user terminal and set up reception message, carry IP address allocated to the user in this message;
(173B) user terminal begins to carry out functional entity transmission data to user entity/routing policy, and user entity/routing policy is carried out functional entity and according to the professional route that obtains data carried out correct route.
Further, described available routing iinformation: comprise local gateway IP, opposite end service network gateway IP information; Described access way comprises whether adopting VPN (virtual private network), adopts which kind of VPN (virtual private network), whether needs to redistribute the IP address, distributing IP address information how.
For achieving the above object, a kind of method of routing that realizes the dialogue-based class business of packet domain of the present invention may further comprise the steps:
(21) session interaction carries out service negotiation between user terminal and service application network element;
(22) the service application network element sends professional routing policy request to professional routing decision functional entity, carries user ID and service identification in this request;
(23) professional routing decision functional entity sends professional routing inquiry request to professional routing policy database;
(24) professional routing policy database is replied professional routing inquiry response to professional routing decision functional entity, comprises this user of described user ID correspondence and the pairing available route of this business and the access way tabulation of described service identification correspondence in this response;
(25) the available route responded according to professional routing policy database of professional routing decision functional entity and access way tabulation and carry out routing decision in conjunction with network condition;
(26) professional routing decision functional entity is carried out functional entity to routing policy and is sent professional routing policy issue, the decision-making of user ID, service identification correspondence, definite professional route, access way information is sent to routing policy carry out functional entity;
(27) routing policy is carried out functional entity according to routing policy information and executing routing policy in the response.
Further, when the method for routing of the dialogue-based class business of above-mentioned realization packet domain was applied to 3GPP PS system, described step (21) was specially:
(211A) carry out the SIP session negotiation between user terminal and the service application network element, carry user ID in the information;
Described step (22) is specially:
(22A) the service application network element is initiated professional routing policy request, the service identification that comprises user ID in this request and represent by the IP five-tuple to professional routing decision functional entity;
Described step (26) is specially:
(261A) professional routing decision functional entity is carried out functional entity to gateway type GPRS Support Node/routing policy and is sent professional routing policy issue;
(262A) gateway type GPRS Support Node/routing policy is carried out functional entity according to the routing policy information and executing routing policy of receiving, user terminal begins the transmission of IP data bag.
Further, when the method for routing of the dialogue-based class business of above-mentioned realization packet domain was applied to the SAE system, described step (21) was specially:
(211B) user terminal and service application network element carry out the SIP session interaction, carry user ID in this interactive information;
Described step (22) is specially:
(221B) the service application network element is initiated professional routing policy request to professional routing decision functional entity, comprises user ID and service identification in this request;
Described step (26) is specially:
(261B) the professional route that will determine of professional routing decision functional entity and access way in company with user ID, service identification stride multiple connecting system anchor gateway, user entity/routing policy is carried out between the functional entity and is carried out service distribution;
(262B) user entity/routing policy execution functional entity initiation customer service tunnel creation process is carried out functional entity, is striden between multiple connecting system anchor gateway and create service channel at user terminal, user entity/routing policy;
(263B) user terminal is carried out functional entity to user entity/routing policy and is sent data, and user entity/routing policy carries out functional entity, stride multiple connecting system anchor gateway carries out forwarding of data according to this business routing policy.
Further, described available routing iinformation comprises: local gateway IP, opposite end service network gateway IP information; Described access way comprises: whether adopt VPN (virtual private network), adopt which kind of VPN (virtual private network), whether need to redistribute the IP address, distributing IP address information how.
Realization packet domain of the present invention is based on the system and method for the Route Selection of business, this system can be applied to 3GPP PS system, SAE system, can also be applied to non-3 GPP systems such as WLAN, WIMAX, in different systems, realized different business, the optimal route selection and the control of tactful route of service access are provided at different users.
Description of drawings
Fig. 1 is system's network element graph of a relation of the Route Selection based on business of the present invention;
Fig. 2 is the non-session service Route Selection flow chart of the system of the Route Selection based on business of the present invention;
Fig. 3 is the session service Route Selection flow chart of the system of the Route Selection based on business of the present invention;
Fig. 4 is the Packet Based Network structure chart of the system of the Route Selection based on business of the present invention when being used for 3GPP PS territory;
Fig. 5 is the non-session service Route Selection of a 3GPP PS framework flow chart;
Fig. 6 is a 3GPP PS framework session service Route Selection flow chart;
The system that Fig. 7 is based on professional Route Selection is used for the structure chart of SAE system;
Fig. 8 is based on SAE system non-session service Route Selection flow chart;
Fig. 9 is based on the professional Route Selection flow chart of SAE system session class.
Embodiment
A kind of system that carries out Route Selection based on business is as shown in Figure 1:
Wherein RRF (Route Rule Function, professional routing decision functional entity) is used for the routing decision based on business, is responsible for determining the related service routing policy and giving routing policy execution functional entity with it according to user's related service information; REF (Route Enforcement Function, routing policy carry out functional entity) is the functional entity that routing policy is carried out, and is responsible for obtaining user's related service information and carries out routing policy based on business; RRDB (Route Rule Database, professional routing policy database) is the database of preserving based on the strategy of business, is responsible for preserving based on the routing policy of business and provides and professional routing decision functional entity interactive function; AF (Application Function, service application network element) provides professional application network element, is responsible for obtaining of conversation-based service feature and attribute.
Can provide the route selection method of realizing non-session service (as the WAP business) and session service (as the IMS business) based on this framework.
The route selection method of non-session service is as shown in Figure 2:
Step 201REF receives a business request information, has in the message to initiate this professional user ID and service identification, and wherein service identification is optional;
Step 202 is not if be with service identification in the service request, and REF analyzes according to the service feature in the service request, discerns this professional attribute;
Step 203REF sends professional routing policy request to RRF, has service identification and user ID in the request;
Step 204RRF is service identification and user ID on RRDB sends professional routing inquiry request and is with in message body;
Step 205RRDB returns the response of professional routing inquiry to RRF, in response with on this user should the business correspondence available route, access way tabulation;
Step 206RRF is according to the available route of RRDB, and the access way tabulation is carried out routing decision in conjunction with the situation of network among the RRF;
Step 207RRF sends professional routing policy response to REF, and information bands such as the professional route that decision-making is definite, access way are given REF;
Step 208REF is according to tactful information and executing routing policy in the response.
Wherein, comprise local gateway IP in the available routing iinformation, relevant informations such as opposite end service network gateway IP, access way comprises whether adopting VPN, adopts which kind of VPN, whether needs to redistribute the IP address, how relevant information such as distributing IP address.
The route selection method of session service as shown in Figure 3.
Session interaction carries out service negotiation between step 301UE and AF, has user ID in mutual;
Step 302AF sends professional routing policy request to RRF, has clear and definite service identification and user ID in the request, and wherein service identification may be represented by the IP five-tuple, also can represent by unified modes such as traffic ID;
Step 303RRF is service identification and user ID on RRDB sends professional routing inquiry request and is with in message body;
Step 304RRDB returns the response of professional routing inquiry to RRF, in response with on this user should the business correspondence available route, the access way tabulation;
Step 305RRF is according to the available route of RRDB, and the access way tabulation is carried out routing decision in conjunction with the situation of network among the RRF;
Step 306RRF sends professional routing policy issue to REF, with user ID, and the professional route that the decision-making that service identification is corresponding is determined, information bands such as access way are given REF;
Step 307REF is according to tactful information and executing routing policy in the response;
Can realize different business by the way, the optimal route selection and the control of tactful route of service access are provided, avoid simultaneously adopting APN need carry out the trouble of terminal configuration at different user.
Above-mentioned system realizes the Route Selection based on business of 3GPP PS framework:
Professional Route Selection framework in the 3GPP PS network can be as shown in Figure 4: SGSN (service type GPRS Support Node) is used for the service request that receiving terminal is initiated;
GGSN/REF (gateway type GPRS Support Node is carried out the functional entity unification with routing policy) is used for receiving and creates service request and send professional routing policy request to professional routing decision functional entity, and wherein, the REF logic entity can be in the GGSN deploy.
It is based on the Route Selection flow process of non-session service as shown in Figure 5:
Step 501UE initiates PDP to SGSN and activates context request, has professional correlated identities such as APN in the request;
After step 502SGSN receives that PDP activates context request, initiate to create the PDP Context request, have user ID IMSI and professional correlated identities APN in the request to GGSN/REF;
After step 503GGSN/REF received and creates the PDP Context request, 203～207 flow processs in the execution graph 2 were obtained tactful routing iinformations such as professional available route and access way;
Step 504GGSN/REF distributes corresponding IP address according to the tactful routing iinformation that gets access to the user, create the incidence relation between user's context and foundation and tactful routing iinformation, after this GGSN returns to SGSN and creates the PDP Context response, in response with on distribute to user's IP;
Step 505SGSN returns to UE and activates PDP Context reception message, is with in message and distributes to user's IP address;
Step 506UE begins to transmit the IP bag, and GGSN/REF is according to the transmission of the professional routing policy guides user packet that gets access to.
The Route Selection flow process of its dialogue-based class business is as shown in Figure 6:
Carry out the SIP session negotiation between step 601UE and AF;
Step 602AF initiates professional routing policy request to RRF, is with the user to flow IP five-tuple sign and service identification in the request;
After step 603RRF receives professional routing policy request, 303～307 related procedure in the execution graph 3;
Step 604UE begins to transmit the IP bag, and GGSN/REF is according to the transmission of the professional routing policy guides user packet that gets access to.
Realize the SAE framework based on professional Route Selection:
SAE (System Architecture Evolution, System Architecture Evolution), be 3GPP standardization effort group studying at present a kind of in order to replace the system architecture of present 3G PS, can provide more high transfer rate than present PS core net, shorter transmission delay, optimize grouping, and support E-UTRAN (Evolved UTRAN, the UTRAN of evolution), the mobile management between the access network of UTRAN, WLAN (Wireless Local Area Network, WLAN (wireless local area network)) and other non-3GPP.
The schematic diagram of this system architecture as shown in Figure 7.
MME (Mobility Management Entity, mobile management functional entity): the mobile management function that is used to finish the user.
UPE (User Plane Entity, user entity are carried out the functional entity unification with routing policy): one of data gateway in the network; Be responsible for the route and the forwarding of packet, the distribution of local ip address, the execution of resource and charging policy, the functions such as anchor point when changing between the 3GPP connecting system.
IASA (Inter Access System Anchor, stride multiple connecting system anchor point): one of data gateway in the network, the different IASA of the being gateways of it and UPE are responsible for the distribution of the IP address of the overall situation, and, comprise the convert anchor point between 3GPP and non-3GPP connecting system as the convert anchor point between different access systems.
The system framework of the Route Selection based on business of the present invention is used for the SAE framework, based on non-session service Route Selection flow process as shown in Figure 8:
Step 801UE initiates service tunnel to MME and sets up request, has service identification in the message;
After step 802MME receives that service tunnel is set up request, send the request of establishment service tunnel, have user ID (as IMSI) and service identification in the message to UPE/REF;
After step 803UPE/REF receives and creates the service tunnel request, carry out as 203～207 related procedure among Fig. 2, obtain the professional route (as the final IASA that uses of this business) that decision-making is determined, which kind of mode is access way (as adopting, distributing IP address how, the Dynamic Host Configuration Protocol server address of use) information such as;
Step 804UPE/REF gives user's distributing IP address according to the information that gets access to, and professional route is associated with user's context, returns to MME simultaneously and creates service tunnel and respond, and is with user ID in the response, service identification and distribute to user's IP address;
After step 805MME receives and creates the service tunnel response, reply service tunnel to UE and set up reception message, bring user's IP address allocated in the message;
Step 806UE begins to send data to UPE/REF, and UPE carries out correct route according to the professional routing iinformation that gets access to data.
The Route Selection flow process of its dialogue-based class business is as shown in Figure 9:
Carry out the SIP session interaction between step 901UE and AF, contain user ID in the information:
Carrying out among Fig. 3 302～305 professional routes between step 902AF, RRF, RRDB consults flow processs and determines professional route;
The professional route that step 903RRF will determine, access way are carried out service distribution in company with user ID, service identification between former IASA, UPE/REF;
Step 904UPE/REF initiates customer service tunnel creation process and create service channel between UE, UPE, IASA;
Step 905UE sends data to UPE, and UPE, IASA carry out forwarding of data according to this business routing policy.
Realization packet domain of the present invention is based on the system and method for the Route Selection of business, this system can be applied to 3GPP PS system, SAE system, can also be applied to non-3 GPP systems such as WLAN, WIMAX, in different systems, realized different business, the optimal route selection and the control of tactful route of service access are provided at different user.
Claims (14)
1. a system that realizes packet domain based on the Route Selection of business is characterized in that, comprising:
Routing policy is carried out functional entity, professional routing decision functional entity, professional routing policy database and service application network element;
Wherein, routing policy is carried out functional entity and is used to obtain user's related service information and carries out routing policy based on business; Professional routing decision functional entity is used for determining the related service routing policy and giving routing policy execution functional entity with it according to user's related service information; Professional routing policy database is preserved based on the routing policy of business and is provided and professional routing decision functional entity interactive function; The service application network element is used for obtaining of conversation-based service feature and attribute for professional routing decision provides professional application network element.
2. realization packet domain as claimed in claim 1 is characterized in that based on the system of the Route Selection of business this system applies also comprises when 3GPP PS system:
The service type GPRS Support Node is used for the service request that receiving terminal is initiated;
Gateway type GPRS Support Node/routing policy is carried out functional entity, is used for receiving creating service request and sending professional routing policy request to professional routing decision functional entity.
3. realization packet domain as claimed in claim 1 is characterized in that based on the system of the Route Selection of business this system applies also comprises when the SAE System Architecture Evolution:
The mobile management functional entity is used to finish user's mobile management;
User entity/routing policy is carried out functional entity, is used for the route of packet and the execution of forwarding, local ip address distribution, resource and charging policy;
Stride multiple connecting system anchor gateway, be used for being responsible for the IP address assignment of the overall situation, the convert anchor point between different system.
4. a method of routing that realizes packet domain based on non-session service is characterized in that, may further comprise the steps:
(11) routing policy function executing entity receives the business request information of user terminal, carries in this service request to initiate this professional user ID;
(12) routing policy is carried out functional entity and is initiated professional routing policy request to professional routing decision functional entity, carries user ID and service identification in this business routing policy request;
(13) professional routing decision functional entity is initiated professional routing inquiry request to professional routing policy database, carries user ID and service identification in this business routing inquiry request;
(14) professional routing policy database is replied professional routing inquiry response to professional routing decision functional entity, comprises this user of described user ID correspondence and the pairing available route of this business and the access way tabulation of described service identification correspondence in this response;
(15) professional routing decision functional entity is tabulated according to the available route and the access way of professional routing policy database response, and carries out routing decision in conjunction with network condition;
(16) professional routing decision functional entity is carried out functional entity to routing policy and is sent professional routing policy response, and professional route, access way list information that decision-making is determined send to routing policy execution functional entity;
(17) routing policy is carried out functional entity and is carried out routing policy according to the policy information in the professional routing policy response.
5. realization packet domain as claimed in claim 4 is based on the method for routing of non-session service, it is characterized in that, in the described step (12), service identification is analyzed according to the feature of business by routing policy function executing entity, discern this professional attribute and obtain, perhaps directly be carried in terminal use's the service request.
6. realization packet domain as claimed in claim 4 is characterized in that based on the method for routing of non-session service when this method was applied to 3GPP PS system, described step (11) was specially:
(111A) user terminal is initiated PDP to the service type GPRS Support Node and is activated the context service request, carries service identification in this request;
After (112A) the service type GPRS Support Node receives that PDP activates the context service request, carry out functional entity to gateway type GPRS Support Node/routing policy and initiate to create the PDP Context request, carry user ID and service identification in this request;
Described step (12) is specially:
(121A) gateway type GPRS Support Node/routing policy is carried out functional entity and is sent the professional routing policy request of PDP Context to professional routing decision functional entity.
7. realization packet domain as claimed in claim 6 is characterized in that based on the method for routing of non-session service described step (17) is specially:
(171A) gateway type GPRS Support Node/routing policy execution functional entity distributes corresponding IP address according to the routing policy response message that obtains to user terminal, create the incidence relation between user's PDP Context and foundation and tactful routing iinformation, and, comprise the IP address of distributing to user terminal in this response to the response of service type GPRS Support Node answer establishment PDP Context;
(172A) the service type GPRS Support Node is replied to user terminal and is activated PDP Context reception message, carries the IP address of distributing to user terminal in this message;
(173A) user terminal begins to transmit the IP bag, and gateway type GPRS Support Node/routing policy is carried out the transmission of functional entity according to the professional routing policy guides user packet that obtains.
8. realization packet domain as claimed in claim 4 is characterized in that based on the method for routing of non-session service when this method was applied to the SAE system, described step (11) was specially:
(111B) user terminal is initiated service tunnel to the mobile management functional entity and is set up request, carries user ID and service identification in this request;
After (112B) the mobile management functional entity receives that service tunnel is set up request, carry out functional entity to user entity/routing policy and initiate to create the service tunnel request, carry user ID and service identification in this request;
Described step (12) is specially:
(121B) user entity/routing policy is carried out functional entity and is sent professional routing policy request to professional routing decision functional entity.
9. realization packet domain as claimed in claim 8 is characterized in that based on the method for routing of non-session service described step (17) is specially:
(171B) user entity/routing policy execution functional entity responds to user's distributing IP address according to the routing policy that obtains, and professional route is associated with user's context, replys the establishment service tunnel for simultaneously the mobile management functional entity and responds;
After (172B) the mobile management functional entity is received and created the service tunnel response, reply service tunnel to user terminal and set up reception message, carry IP address allocated to the user in this message;
(173B) user terminal begins to carry out functional entity transmission data to user entity/routing policy, and user entity/routing policy is carried out functional entity and according to the professional route that obtains data carried out correct route.
10. as the method for routing of the described realization packet domain of arbitrary claim in the claim 4 to 9, it is characterized in that described available routing iinformation: comprise local gateway IP, opposite end service network gateway IP information based on non-session service; Described access way comprises whether adopting VPN (virtual private network), adopts which kind of VPN (virtual private network), whether needs to redistribute the IP address, distributing IP address information how.
11. a method of routing that realizes the dialogue-based class business of packet domain is characterized in that, may further comprise the steps:
(21) session interaction carries out service negotiation between user terminal and service application network element;
(22) the service application network element sends professional routing policy request to professional routing decision functional entity, carries user ID and service identification in this request;
(23) professional routing decision functional entity sends professional routing inquiry request to professional routing policy database;
(24) professional routing policy database is replied professional routing inquiry response to professional routing decision functional entity, comprises this user of described user ID correspondence and the pairing available route of this business and the access way tabulation of described service identification correspondence in this response;
(25) the available route responded according to professional routing policy database of professional routing decision functional entity and access way tabulation and carry out routing decision in conjunction with network condition;
(26) professional routing decision functional entity is carried out functional entity to routing policy and is sent professional routing policy issue, the decision-making of user ID, service identification correspondence, definite professional route, access way information is sent to routing policy carry out functional entity;
(27) routing policy is carried out functional entity according to routing policy information and executing routing policy in the response.
11. the method for routing of the dialogue-based class business of realization packet domain as claimed in claim 10 is characterized in that, when this method was applied to 3GPP PS system, described step (21) was specially:
(211A) carry out the SIP session negotiation between user terminal and the service application network element, carry user ID in the information;
Described step (22) is specially:
(22A) the service application network element is initiated professional routing policy request, the service identification that comprises user ID in this request and represent by the IP five-tuple to professional routing decision functional entity;
Described step (26) is specially:
(261A) professional routing decision functional entity is carried out functional entity to gateway type GPRS Support Node/routing policy and is sent professional routing policy issue;
(262A) gateway type GPRS Support Node/routing policy is carried out functional entity according to the routing policy information and executing routing policy of receiving, user terminal begins the transmission of IP data bag.
12. the method for routing of the dialogue-based class business of realization packet domain as claimed in claim 10 is characterized in that, when this method was applied to the SAE system, described step (21) was specially:
(211B) user terminal and service application network element carry out the SIP session interaction, carry user ID in this interactive information;
Described step (22) is specially:
(221B) the service application network element is initiated professional routing policy request to professional routing decision functional entity, comprises user ID and service identification in this request;
Described step (26) is specially:
(261B) the professional route that will determine of professional routing decision functional entity and access way in company with user ID, service identification stride multiple connecting system anchor gateway, user entity/routing policy is carried out between the functional entity and is carried out service distribution;
(262B) user entity/routing policy execution functional entity initiation customer service tunnel creation process is carried out functional entity, is striden between multiple connecting system anchor gateway and create service channel at user terminal, user entity/routing policy;
(263B) user terminal is carried out functional entity to user entity/routing policy and is sent data, and user entity/routing policy carries out functional entity, stride multiple connecting system anchor gateway carries out forwarding of data according to this business routing policy.
13. the method for routing as claim 10, the dialogue-based class business of 11 or 12 described realization packet domain is characterized in that described available routing iinformation comprises: local gateway IP, opposite end service network gateway IP information; Described access way comprises: whether adopt VPN (virtual private network), adopt which kind of VPN (virtual private network), whether need to redistribute the IP address, distributing IP address information how.
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