CN101102254A - Establishment method for end-to-end path across domains - Google Patents
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Abstract
The method comprises: setting up a first interface between the strategy decision unit of local domain and the strategy decision unit of the opposite end; setting up a second interface between the resource transmission controlling unit of local domain and the resource transmission controlling unit of opposite end; said first interface is used for transmitting the information relating to the service; the second interface is used for transmitting the information relating to the transmission network.
Description
Technical field
The present invention relates to the next generation network communication field, and especially, relate to the domain-across end-to-end path establishment method in the next generation network.
Background technology
At present, the mechanism that how to realize end-to-end (end-to-end) Resource Allocation in Networks and control is one of major issue of network resource admission control in the next generation network.Along with the technical development of NGN network and deployment gradually, it is extremely important that this problem will become.
Lead alliance's next generation network (ITU-NGN) resource allocation and controlled function subsystem (promptly in present international telecommunication, the resource and admission control appliance, abbreviate RACF as, its structure is as shown in Figure 1) related definition in (mainly being to define in Y.RACF (Y.2111) standard), the mode that transmits the foundation of net domain-across end-to-end path is divided into three kinds, and first kind is to finish by the traffic signaling between the operation layer service control function cell S CF (service control function); Second kind is to finish with the signaling on road by transmitting net itself; The third is to finish by the cross-domain interface Ri interface between strategy decisive function unit (PD-FE) entity in the Resource and Admission Control Sub-system that transmits key-course, and its specific implementation as shown in Figure 2.
Fig. 1 shows the structure according to the RACF of correlation technique.
In structure shown in Figure 1, comprise following functional unit: transmit resource and carry out functional unit (Transport Resource Enforcement Function Entity, TRE-FE), policy enforcement function unit (Policy Enforcement Function Entity, PE-FE), transmit resource control function units (Transport Resource Control Function Entity, TRC-FE), strategy decisive function unit (Policy Decision Function Entity, PD-FE), and resource accommodating control function (Resource Admission ControlFunction, RACF).
The function of each interface between the above-mentioned functions unit is as follows: the Rc interface is responsible for transmitting the network topology of network (Transport Functions) and the collection and the resource operating position in the network operation process of resource information collected feedback;
The Rs interface is responsible for service control layer (SCF) and is carried out the relevant mutual of service conversation abstract resource request with the strategy decisive function unit (PD-FE) that transmits network control preparative layer (RACF);
The Rt interface be responsible for strategy decisive function unit PD-FE with transmit request that net resource control function units (TRC-FE) carries out the session Internet resources and distribution relevant alternately;
The Ri interface is responsible for the cross-domain communication between the PD-FE;
The Rp interface is responsible for the intra-area communication between the TRC-FE;
In ITU-T Y.RACF standard and other relevant criterion, defined the concrete function of each functional unit and interface, will no longer repeat (the Rj interface among Fig. 1 is to set up set interface for the realization session path, and this interface will be explained hereinafter) here.
In above-mentioned three kinds of modes based on this structure, can guarantee the foundation of domain-across end-to-end path fully except that second kind, other two kinds of methods some need with transmit information that network technology is closely related and (for example just can finish under the situation that end-to-end path sets up, use in the network of MPLS-TE technology) can't finish the foundation of end-to-end path, this be because:
PD-FE is a functional unit of being absorbed in the corresponding strategies decision-making of bearer network technology irrelevant (transport technologyindependent), and it is the information relevant with Bearer Network not, therefore can't instruct the foundation in the relevant path of Bearer Network;
And what transmit between the SCF also is professional relevant signaling, does not possess the ability of the foundation in the relevant path of the Bearer Network of instructing.
And in the second approach, transmit the channel associated signalling of net own and set up the problem that there is aspect such as autgmentability again in the mode of domain-across end-to-end path, be unfavorable for widespread deployment.
And, the present effective scheme that does not propose to set up domain-across end-to-end path as yet.
Summary of the invention
Consider the problems referred to above and make the present invention, for this reason, main purpose of the present invention is to provide a kind of domain-across end-to-end path to set up scheme, can't finish the problem that domain-across end-to-end path is set up to solve in the correlation technique owing to need to use the relevant information of Bearer Network.
According to embodiments of the invention, provide a kind of domain-across end-to-end path establishment method.
In the method, between this domain policy decision making function unit and domain policy decision making function unit, opposite end, be provided with first interface, and between this territory transmission resource control function units and territory, opposite end transmission resource control function units, be provided with second interface.
This method comprises: step S502, request is set up in the path in this domain policy decision making function unit in this territory of this territory transmission resource control function units transmission session, and send conversation request to domain policy decision making function unit, opposite end by first interface, wherein, this territory is transmitted resource control function units and is received path computing and the resource allocation of carrying out after the path foundation request in this territory of session in this territory;
Step S504, domain policy decision making function unit, opposite end receives conversation request, and request is set up in the path in the territory, opposite end of territory, opposite end transmission resource control function units transmission session, and the territory, opposite end is transmitted resource control function units and received path computing and the resource allocation of carrying out after path foundation is asked in the territory, opposite end of session in the territory, opposite end;
Step S506, resource control function units and territory, opposite end are transmitted in this territory, and to transmit resource control function units unidirectional or notify it to set up the relevant information that information is set up in information and path in the path in territory, place separately mutually by second interface, and with the path set up information and path set up the relevant information of information inform its separately the transmission resource of place realm entry node carry out functional unit; And
Step S508, the transmission resource that the transmission resource in this territory is carried out functional unit and territory, opposite end is carried out functional unit and respectively it is set up information and path and set up the relevant information of information and handle in path in territory, place separately, connects and Resources allocation.
Wherein, in step S502, this domain policy decision making function unit transmits resource control function units to this territory and sends this territory inner boundary of session to the foundation request of path, border.And in step S504, domain policy decision making function unit, opposite end transmits resource control function units to the territory, opposite end and sends territory, the opposite end inner boundary of session to the foundation request of path, border.
In addition, first interface is the Ri interface, and the first interface transmission and professional relevant information; Second interface is the Rj interface, and the second interface transmission information relevant with transmission network.
And the relevant information that information is set up in the path comprises: the packaging information of Egress node information and the packet that sends.
In addition, in the method, above-mentioned network is a next generation network.
By technique scheme of the present invention, solved the problem that service control function and strategy decisive function unit can't be finished the domain-across end-to-end path foundation that is closely related with Bearer Network separately.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the block diagram according to the RACF of correlation technique;
Fig. 2 is that the Ri interface between the strategy decisive function unit of passing through according to correlation technique carries out the schematic diagram that the cross-domain end-to-end road is advanced to set up;
Fig. 3 is the schematic diagram that passes through Ri interface and the foundation of Rj interface realization domain-across end-to-end path according to the embodiment of the invention;
Fig. 4 is the schematic diagram that the domain-across end-to-end path establishment method according to the embodiment of the invention is used for RACF structure shown in Figure 1; And
Fig. 5 is the flow chart according to the domain-across end-to-end path establishment method of the embodiment of the invention.
Embodiment
In the present embodiment, provide a kind of domain-across end-to-end path establishment method, this method is the core technology of collection network topology resource in the next generation network.Wherein, this method transmits in the NGN network carries out the method that cross-domain communication realizes that the relevant domain-across end-to-end path of Bearer Network is set up between the resource control function units (TRC-FE), realized the foundation of the domain-across end-to-end path that Bearer Network is relevant, solved in the correlation technique and can't finish the problem that domain-across end-to-end path is set up owing to need to use the relevant information of Bearer Network.To describe embodiments of the invention in detail below.
As shown in Figure 3, in the method, by the Ri interface (promptly, the first above-mentioned interface) and the Rj interface (promptly, the second above-mentioned interface) foundation of domain-across end-to-end path in the realization next generation network, the Ri interface will comprise that with the Rj interface transmission network (transport network) is connected with a plurality of networks of transition network (transit network), realize that the cross-domain path between two subscriber terminal equipments (subscriber terminal equipment # 1 and #2) is set up.
Particularly, as shown in Figure 4, the Ri interface is connected (DOMAIN A) strategy decisive function unit, this territory (PD-FE) with strategy decisive function unit, territory, opposite end (DOMAIN B), the Rj interface transmits resource control function units with this territory and is connected with territory, opposite end transmission resource control function units.Wherein, the Ri interface transmits and professional relevant information; The Rj interface transmits the information relevant with transmission network.
As shown in Figure 5, this method can comprise: step S502, request is set up in path in this territory of this territory transmission resource control function units transmission session (session), this domain policy decision making function unit, and send conversation request to domain policy decision making function unit, opposite end by the Ri interface, wherein, this territory is transmitted resource control function units and is received path computing and the resource allocation of carrying out after the path foundation request in this territory of session in this territory;
Step S504, domain policy decision making function unit, opposite end receives conversation request, and request is set up in the path in the territory, opposite end of territory, opposite end transmission resource control function units transmission session, and the territory, opposite end is transmitted resource control function units and received path computing and the resource allocation of carrying out after path foundation is asked in the territory, opposite end of session in the territory, opposite end;
Step S506, resource control function units and territory, opposite end are transmitted in this territory, and to transmit resource control function units unidirectional or notify it to set up the relevant information that information is set up in information and path in the path in territory, place separately mutually by the Rj interface, and with the path set up information and path set up the relevant information of information inform its separately the transmission resource of place realm entry node carry out functional unit; And
Step S508, the transmission resource that the transmission resource in this territory is carried out functional unit and territory, opposite end is carried out functional unit and respectively it is set up information and path and set up the relevant information of information and discern and subsequent treatment in path in territory, place separately, connects and Resources allocation.
Wherein, in step S502, this domain policy decision making function unit transmits resource control function units to this territory and sends this territory inner boundary of session to the foundation request of path, border (edge-to-edge).And in step S504, domain policy decision making function unit, opposite end transmits resource control function units to the territory, opposite end and sends territory, the opposite end inner boundary of session to the foundation request of path, border.
In addition, the Ri interface transmits and professional relevant information, and the Rj interface transmits the information relevant with transmission network, thereby has both guaranteed the correct of business datum, guarantees the quality of transmission again.
And the relevant information that information is set up in the path comprises: Egress node information and packet encapsulation information.
In sum, the present invention utilizes existing Ri interface and transmits cross-domain communication interface (Rj interface) between the resource control function units and directly transmit the Bearer Network relevant information and carry out the foundation of bearer network domain-across end-to-end path, has solved service control function unit and strategy decisive function unit and can't finish the problem that the domain-across end-to-end path that is closely related with Bearer Network is set up separately.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. domain-across end-to-end path establishment method, between this domain policy decision making function unit and domain policy decision making function unit, opposite end, be provided with first interface, and between this territory transmission resource control function units and territory, opposite end transmission resource control function units, be provided with second interface, it is characterized in that, comprising:
Step S502, request is set up in the path in described domain policy decision making function unit in this territory of this territory transmission resource control function units transmission session, and send conversation request to domain policy decision making function unit, described opposite end by described first interface, wherein, described this territory is transmitted resource control function units and is received path computing and the resource allocation of carrying out after the path foundation request in this territory of described session in described this territory;
Step S504, domain policy decision making function unit, described opposite end receives described conversation request, and request is set up in the path in the territory, opposite end of territory, opposite end transmission resource control function units transmission session, and territory, described opposite end is transmitted resource control function units and received path computing and the resource allocation of carrying out after path foundation is asked in the territory, opposite end of described session in the territory, described opposite end;
Step S506, resource control function units and territory, described opposite end are transmitted in described this territory, and to transmit resource control function units unidirectional or notify it to set up the relevant information that information is set up in information and described path in the path in territory, place separately mutually by second interface, and with described path set up information and described path set up the relevant information of information inform its separately the transmission resource of place realm entry node carry out functional unit; And
Step S508, the transmission resource that the transmission resource in described this territory is carried out functional unit and territory, described opposite end is carried out functional unit and respectively it is set up information and described path and set up the relevant information of information and handle in described path in territory, place separately, connects and Resources allocation.
2. domain-across end-to-end path establishment method according to claim 1, it is characterized in that, in described step S502, described domain policy decision making function unit transmits resource control function units to described this territory and sends this territory inner boundary of session to the foundation request of path, border.
3. domain-across end-to-end path establishment method according to claim 1, it is characterized in that, in described step S504, domain policy decision making function unit, described opposite end transmits resource control function units to territory, described opposite end and sends territory, the opposite end inner boundary of session to the foundation request of path, border.
4. domain-across end-to-end path establishment method according to claim 1 is characterized in that, the relevant information that information is set up in described path comprises: Egress node information and packet encapsulation information.
5. according to each described domain-across end-to-end path establishment method in the claim 1 to 4, it is characterized in that described first interface is the Ri interface, and described first interface transmission and professional relevant information.
6. according to each described domain-across end-to-end path establishment method in the claim 1 to 4, it is characterized in that described second interface is the Rj interface, and the described second interface transmission information relevant with transmission network.
7. according to each described domain-across end-to-end path establishment method in the claim 1 to 4, it is characterized in that described network is a next generation network.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710135790 CN101102254A (en) | 2007-08-21 | 2007-08-21 | Establishment method for end-to-end path across domains |
| PCT/CN2007/003673 WO2009023999A1 (en) | 2007-08-21 | 2007-12-19 | A method for establishing inter-domain end-to-end path |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200710135790 CN101102254A (en) | 2007-08-21 | 2007-08-21 | Establishment method for end-to-end path across domains |
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| CN101102254A true CN101102254A (en) | 2008-01-09 |
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| CN 200710135790 Pending CN101102254A (en) | 2007-08-21 | 2007-08-21 | Establishment method for end-to-end path across domains |
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| WO (1) | WO2009023999A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009024000A1 (en) * | 2007-08-23 | 2009-02-26 | Zte Corporation | Cross-domain end-to-end path establishment method |
| CN101309224B (en) * | 2008-06-30 | 2011-07-20 | 中兴通讯股份有限公司 | Resource admission control system and method for network of multiple protocol label switching structure |
| WO2018145642A1 (en) * | 2017-02-10 | 2018-08-16 | 中兴通讯股份有限公司 | Method and apparatus for establishing route |
| CN112202526A (en) * | 2020-09-07 | 2021-01-08 | 中国联合网络通信集团有限公司 | Connectivity determination method of cross-domain wavelength division multiplexing system and network element management system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3729051B2 (en) * | 2000-10-18 | 2005-12-21 | 日本電気株式会社 | Inter-domain routing apparatus, system and method |
| CN100389581C (en) * | 2004-09-29 | 2008-05-21 | 华为技术有限公司 | Method for ensuring quality of end-to-end service |
| CN100456691C (en) * | 2004-12-02 | 2009-01-28 | 华为技术有限公司 | Method for distributing bearing net resource |
| FR2888697A1 (en) * | 2005-07-13 | 2007-01-19 | France Telecom | METHOD, SYSTEM AND COMPUTER PROGRAM FOR DETERMINING TYPES OF INTERCONNECTION AGREEMENTS FOR INTERNET NETWORK INTERDOMAIN LINKS. USE TO CONFIGURE A ROUTER AUTOMATICALLY |
-
2007
- 2007-08-21 CN CN 200710135790 patent/CN101102254A/en active Pending
- 2007-12-19 WO PCT/CN2007/003673 patent/WO2009023999A1/en active Application Filing
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009024000A1 (en) * | 2007-08-23 | 2009-02-26 | Zte Corporation | Cross-domain end-to-end path establishment method |
| CN101309224B (en) * | 2008-06-30 | 2011-07-20 | 中兴通讯股份有限公司 | Resource admission control system and method for network of multiple protocol label switching structure |
| WO2018145642A1 (en) * | 2017-02-10 | 2018-08-16 | 中兴通讯股份有限公司 | Method and apparatus for establishing route |
| CN112202526A (en) * | 2020-09-07 | 2021-01-08 | 中国联合网络通信集团有限公司 | Connectivity determination method of cross-domain wavelength division multiplexing system and network element management system |
| CN112202526B (en) * | 2020-09-07 | 2023-03-24 | 中国联合网络通信集团有限公司 | Connectivity determination method of cross-domain wavelength division multiplexing system and network element management system |
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| Publication number | Publication date |
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| WO2009023999A1 (en) | 2009-02-26 |
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