CN101488900A - Method and system for implementing service transmission in next generation network - Google Patents
Method and system for implementing service transmission in next generation networkDownload PDFInfo
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- CN101488900A CN101488900ACNA2008100259468ACN200810025946ACN101488900ACN 101488900 ACN101488900 ACN 101488900ACN A2008100259468 ACNA2008100259468 ACN A2008100259468ACN 200810025946 ACN200810025946 ACN 200810025946ACN 101488900 ACN101488900 ACN 101488900A
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Abstract
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of implementation method and system at the middle transport service of next generation network (NGN, NextGeneration Network).
Background technology
(the ITU-T of International Telecommunications Union, International Telecommunication Union-Telecommunication Standards Sector) (the NGN FG of next generation network seminar, GenerationNetwork Focus Group) released the NGN framework, the NGN framework is divided into two-layer: operation layer (servicestratum) and transport layer (transport stratum).Operation layer mainly is the process user service request and sends it to transport layer and handle, and transport layer mainly is that the service request that operation layer sends over is carried out access control, Path selection and configuration and flow transmits.Wherein, access control and Path selection and configuration mainly are to be finished by resource and controlled function entity (RACF, Resource and Admission Control Function).And the flow transmission is finished by transmitting network element.Transmitting network element comprises access device, inserts transfer equipment, equipment of the core network, core net transfer equipment.The functional mode of RACF as shown in Figure 1.Mainly carry out IP-based speech business (VOIP on the Access Network, Voice over IP), video traffic (VOD, Video onDemand), bandwidth on-demand business (BOD as required, Bandwidth on Demand), IP-based television services (IPTV, IP-based TeleVision) business.NGN network as referred to herein is the NGN network on a kind of more broad sense, and it comprises the network that the RACF with ITU-T definition controls, and also comprises the network that the RACS with the TISPAN definition controls.
Transmission net as referred to herein is the transmission net on the narrow justice, be included in the transport layer (transportstratum) of NGN, mainly be meant and adopt SDH (Synchronous Digital Hierarchy) (SDH, Synchronous Digital Hierarchy), wavelength division multiplexing (WDM, Wavelength Division Multiplexing), optical transfer network (OTN, OpticalTransport Network), provider backbone bridging-traffic engineering (PBB-TE, Provider BackboneBridge), multi protocol label exchange path transmits net (T-MPLS, Transport-Multi-Protocol LabelSwitch) network equipment of technology such as, the business that transmission can be carried out on the net mainly is 1 layer of virtual private networks (L1VPN towards the big customer, Layer 1 Virtual Private Network), 2 layers of virtual private networks (L2VPN, Layer 2 Virtual Private Network), business such as BOD, but not the terminaloriented personal user's that Access Network is carried out business (such as VOIP etc.).
Existing NGN system will be what to support the control that transmits net and management from framework, but existing NGN system protocol and interface are but very limited to the support that transmits network, particularly be not supported in universal multi protocol label exchange path (GMPLS, Generalized Multi-Protocol Label Switch), the transmission network under path-calculating element (PCE, the Path Computation Element) control.
The inventor is in creation process of the present invention, and there are the following problems with management aspect to find the NGN agreement that defines at present to transmit network service control in support:
Existing NGN agreement is only supported MPLS LSP, part is supported Ethernet, do not support the SDH path to connect, do not support the PBB-TE/PBT path to connect yet, realize in resource and the accommodation control subsystem (RACS, Resource andAdmission Control Subsystem) that also there is same problem in transport service.
Summary of the invention
The embodiment of the invention provide a kind of in the NGN network implementation method and the system of transport service, include the function that transmits net in the NGN network, in the NGN network, make up the transmission net of high availability, unified business operation system.
The implementation method of transport service in the NGN network of RACF control that the embodiment of the invention provides comprises:
In the NGN network of RACF control, include PCE/GMPLS in, to realize that RACF is to transmitting Network Management and control;
Transmission resource control function entity TRC-FE and the described PCE/GMPLS collaborative work of the NGN network of RACF control, to transmitting management and the control that network service is concentrated, and indication operator equipment is set up label switched path for the transmission network service;
After described label switched path was set up, management control also transmitted described business.
The embodiment of the invention also provide a kind of in the NGN network of RACS control the implementation method of transport service, comprising:
In the NGN network of RACS control, include PCE/GMPLS in, to realize that RACS is to transmitting Network Management and control;
Access-in resource and accommodating control function Access-Resource and Admission Control Function and the described PCE/GMPLS collaborative work of the NGN network of RACS control, to transmitting management and the control that network service is concentrated, and indication operator equipment is set up label switched path for the transmission network service;
After described label switched path was set up, management control also transmitted described business.
Correspondingly, the embodiment of the invention also provide a kind of in the NGN network of RACF control the realization system of transport service, describedly in the NGN network of RACF control, included PCE/GMPLS in, comprising:
Transmit resource control function entity TRC-FE, be used for and described PCE/GMPLS collaborative work, to transmitting management and the control that network service is concentrated, and set up the label switched path that transmits network service;
Policy deciding functional entity PD-FE is used for after described label switched path is set up, and management control also transmits described business;
Path-calculating element PCE is used to described transmission network service to set up the label switched path calculating path, and routing information is provided;
GMPLS module GMPLS is used for and described TRC-FE and PCE collaborative work, described transmission network service is managed and controls, and set up label switched path for it.
The embodiment of the invention also provide a kind of in the NGN network of RACS control the realization system of transport service, describedly in the NGN network of RACS control, included PCE/GMPLS in, comprising:
Access-in resource and accommodating control function Access-Resource and Admission Control Function are used for and described PCE/GMPLS collaborative work, to transmitting management and the control that network service is concentrated, and set up the label switched path that transmits network service; After described label switched path was set up, management control also transmitted described business;
Path-calculating element PCE is used to management and controls described transmission network service, and set up the label switched path calculating path for described transmission network service, and routing information is provided;
General multiple protocols label Switching Module GMPLS is used for and described Access-Resource and Admission Control Function and PCE collaborative work, described transmission network service is managed and controls, and set up label switched path for it.
Implement embodiments of the invention, having following beneficial effect:
In the NGN network, include the PCE/GMPLS that transmits net in, the resource control function entity collaborative work in described PCE/GMPLS and the NGN network, management and control that the transmission network service is concentrated, and set up label switched path and transmit described business; In the NGN network, make up the transmission net of high availability, unified business operation system.
Description of drawings
Fig. 1 is the schematic diagram of existing NGN structure;
Fig. 2 is the schematic flow sheet of implementation method first embodiment of transport service in the NGN network of RACF control that the embodiment of the invention provides;
Fig. 3 is the schematic flow sheet of implementation method second embodiment of transport service in the NGN network of RACF control that the embodiment of the invention provides;
Fig. 4 is the schematic flow sheet of implementation method the 3rd embodiment of transport service in the NGN network of RACF control that the embodiment of the invention provides;
Fig. 5 is the composition schematic diagram of the realization system of transport service in the NGN network of RACF control that the embodiment of the invention provides;
Fig. 6 is the schematic flow sheet of implementation method first embodiment of transport service in the NGN network of RACS control that the embodiment of the invention provides;
Fig. 7 is the schematic flow sheet of implementation method second embodiment of transport service in the NGN network of RACS control that the embodiment of the invention provides;
Fig. 8 is the schematic flow sheet of implementation method the 3rd embodiment of transport service in the NGN network of RACS control that the embodiment of the invention provides;
Fig. 9 is the composition schematic diagram of the realization system of transport service in the NGN network of RACS control that the embodiment of the invention provides.
Embodiment
The embodiment of the invention provide a kind of in the NGN network implementation method and the system of transport service, include the function that transmits net in the NGN network, in the NGN network, make up the transmission net of high availability, unified business operation system.
Referring to Fig. 2, be the schematic flow sheet of implementation method first embodiment of transport service in the NGN network of RACF control that the embodiment of the invention provides.
Instep 100, in the NGN network of RACF control, include PCE/GMPLS in, to realize that RACF is to transmitting Network Management and control;
Instep 101, transmit resource control function entity (TRC-FE, Transport Resource ControlFunction Entity) reception is from the request for transmission network service Resources allocation of policy deciding functional entity (PD-FE, Policy Decision FunctionEntity);
Instep 102, TRC-FE analyze described transmission network service the label switched path between the provider edge equipment of process whether set up;
Instep 103,, judge then whether it satisfies the resource requirement that transmits network service if label switched path is set up;
Instep 104, not have under the situation of foundation at resource requirement that satisfy not to transmit network service or label switched path, TRC-FE initiates path computing request to PCE, is passed through label switched path between the provider edge equipment to select described transmission network service;
Instep 105, TRC-FE receives the path computing result from PCE, obtains routing information;
Need to prove that the routing information here can be whole routing information, also can be the routing information of part;
Instep 106,, obtain corresponding resource information according to the transmission net type of described TRC-FE management;
Instep 107, TRC-FE initiates order to set up label switched path to operator's equipment, perhaps initiate order to set up label switched path to operator's equipment by PD-FE, carry resource information in the described order, include: parameters such as task identifier, source provider edge equipment, purpose provider edge equipment and/or routing information, label, network QOS parameter, protection relation, priority;
Need to prove in this step, whether carry routing information in the described order, need whether return whole routing informations according to PCE in thestep 105 and decide to TRC-FE;
If instep 105, after PCE calculates the path, just whole routing informations is returned to TRC-FE, then in thestep 107, TRC-FE is carried at routing information in the described order, directly sends to operator's equipment, perhaps sends to operator's equipment by PD-FE; Concrete handling process is: TRC-FE initiates path computing request (containing task identifier) to PCE after having received the resource request of PD-FE, after PCE calculates and finishes, return whole routing informations, after TRC-FE has received routing information, directly initiate the path and set up order to operator's equipment, perhaps initiate the path to operator's equipment and set up order, in this order, comprise described routing information by PD-FE;
If instep 105, after PCE calculates the path, just, promptly whether there is active path to return to TRC-FE with the routing information of part, then in thestep 107, TRC-FE does not carry routing information in described order; Concrete handling process is: TRC-FE initiates path computing request (containing task identifier) to PCE after having received the resource request of PD-FE, after PCE calculates and finishes, do not return whole routing informations, but tell whether TRC-FE has available path, after TRC-FE has received sure information, directly initiate the path and set up order, perhaps initiate the path to operator's equipment and set up order, in this order, do not comprise routing information by PD-FE to operator's equipment.After operator's equipment is received this order, initiate path computing request to PCE, PCE returns detailed path information according to task identifier again.
Instep 108, the source provider edge equipment receives after described label switched path sets up order, initiates to set up label switched path signaling between the provider edge equipment to the purpose provider edge equipment;
Instep 109,, set up the label switched path between source provider edge equipment and the purpose provider edge equipment according to resource information of carrying in the described order and routing information;
Instep 110, after described label switched path was set up, management control also transmitted described transmission network service.
Referring to Fig. 3, be the schematic flow sheet of implementation method second embodiment of transport service in the NGN network of RACF control that the embodiment of the invention provides.
In step 200, in the NGN network of RACF control, include the PCE/GMPLS that transmits net in, with the NGN network of realizing RACF control to transmitting Network Management and control;
In step 201, TRC-FE receives the request for transmission network service Resources allocation from PD-FE;
In step 202, TRC-FE analyze described transmission network service the label switched path between the provider edge equipment of process whether set up;
In step 203,, judge then whether it satisfies the resource requirement that transmits network service if label switched path is set up;
In step 204, not have under the situation of foundation at resource requirement that satisfy not to transmit network service or label switched path, TRC-FE initiates path computing request to PCE, is passed through label switched path between the provider edge equipment to select described transmission network service;
In step 205, TRC-FE receives the path computing result from PCE, obtains routing information; Need to prove that the routing information here can be whole routing information, also can be the routing information of part;
In step 206,, obtain corresponding resource information according to the transmission net type of described TRC-FE management;
In step 207, TRC-FE initiates order to set up label switched path to provider edge equipment, perhaps initiate the path to operator's equipment and set up order by PD-FE, carry resource information in the described order, include: parameters such as task identifier, source provider edge equipment, purpose provider edge equipment and/or routing information, label, network QOS parameter, protection relation, priority;
Need to prove in this step, whether carry routing information in the described order, need whether return whole routing informations according to PCE in the step 205 and decide to TRC-FE;
If in step 205, after PCE calculates the path, just whole routing informations is returned to TRC-FE, then in the step 207, TRC-FE is carried at routing information in the described order, directly sends to operator's equipment, perhaps sends to operator's equipment by PD-FE; Concrete handling process is: TRC-FE initiates path computing request (containing task identifier) to PCE after having received the resource request of PD-FE, after PCE calculates and finishes, return whole routing informations, after TRC-FE has received routing information, directly initiate the path and set up order to operator's equipment, perhaps initiate the path to operator's equipment and set up order, in this order, comprise described routing information by PD-FE;
If in step 205, after PCE calculates the path, just, promptly whether there is active path to return to TRC-FE with the routing information of part, then in the step 207, TRC-FE does not carry routing information in described order; Concrete handling process is: TRC-FE initiates path computing request (containing task identifier) to PCE after having received the resource request of PD-FE, after PCE calculates and finishes, do not return whole routing informations, but tell whether TRC-FE has available path, after TRC-FE has received sure information, initiate the path to operator's equipment and set up order, perhaps initiate the path to operator's equipment and set up order, in this order, do not comprise routing information by PD-FE.After operator's equipment is received this order, initiate path computing request to PCE, PCE returns detailed path information according to task identifier again.In step 208, the source provider edge equipment receives after described label switched path sets up order, initiates to set up label switched path signaling between the provider edge equipment to the purpose provider edge equipment;
In step 209,, set up the label switched path between source provider edge equipment and the purpose provider edge equipment according to resource information of carrying in the described order and routing information;
In step 210, TRC-FE directly sends the order set up branch road/pseudo-line passage to provider edge equipment, but perhaps TRC-FE to PD-FE feedback resources acquired information, again by PD-FE issue set up branch road/pseudo-line passage order to provider edge equipment;
In step 211, provider edge equipment is bound the pairing branch road of task identifier/pseudo-line passage and the pairing label switched path of this task identifier, to realize management and the control of PD-FE to business.
Referring to Fig. 4, be the schematic flow sheet of implementation method the 3rd embodiment of transport service in the NGN network of RACF control that the embodiment of the invention provides.
Instep 300, in the NGN network of RACF control, include the PCE/GMPLS that transmits net in, with the NGN network of realizing RACF control to transmitting Network Management and control;
Instep 301, TRC-FE receives the request for transmission network service Resources allocation from PD-FE;
Instep 302, TRC-FE analyze described NGN business the label switched path between the provider edge equipment of process whether set up;
Instep 303,, judge then whether it satisfies the resource requirement that transmits network service if label switched path is set up;
Instep 304, not have under the situation of foundation at resource requirement that satisfy not to transmit network service or label switched path, TRC-FE initiates path computing request to PCE, is passed through label switched path between the provider edge equipment to select described transmission network service;
Instep 305, TRC-FE receives the path computing result from PCE, obtains routing information; Need to prove that the routing information here can be whole routing information, also can be the routing information of part;
Instep 306,, obtain corresponding resource information according to the transmission net type of described TRC-FE management;
Instep 307, TRC-FE is directly to provider edge equipment, perhaps initiate order to set up label switched path to provider edge equipment by PD-FE, carry resource information in the described order, include: parameters such as task identifier, source provider edge equipment, purpose provider edge equipment and/or routing information, label, network QOS parameter, protection relation, priority;
Need to prove in this step, whether carry routing information in the described order, need whether return whole routing informations according to PCE in thestep 305 and decide to TRC-FE;
If instep 305, after PCE calculates the path, just whole routing informations is returned to TRC-FE, then in thestep 307, TRC-FE is carried at routing information in the described order, directly send to operator's equipment, perhaps by PD-FE described order being sent to the concrete handling process of operator's equipment is: TRC-FE initiates path computing request (containing task identifier) to PCE after having received the resource request of PD-FE, after PCE calculates and finishes, return whole routing informations, after TRC-FE has received routing information, directly initiate the path and set up order to operator's equipment, perhaps initiate the path to operator's equipment and set up order, in this order, comprise described routing information by PD-FE;
If instep 305, after PCE calculates the path, just, promptly whether there is active path to return to TRC-FE with the routing information of part, then in thestep 307, TRC-FE does not carry routing information in described order; Concrete handling process is: TRC-FE initiates path computing request (containing task identifier) to PCE after having received the resource request of PD-FE, after PCE calculates and finishes, do not return whole routing informations, but tell whether TRC-FE has available path, after TRC-FE has received sure information, directly initiate the path and set up order, perhaps initiate the path to operator's equipment and set up order, in this order, do not comprise routing information by PD-FE to operator.After operator's equipment is received this order, initiate path computing request to PCE, PCE returns detailed path information according to task identifier again.
Instep 308, judge the equipment on the path of process whether all whether support generalized multiprotocol label switching (GMPLS) protocol, ifchange step 309 over to; If not, then changestep 310 over to;
Instep 309, TRC-FE directly initiates label switched path foundation order to provider edge equipment or by PD-FE to operator's equipment; After this flow process is identical with second embodiment with first embodiment, in this no longer repeat specification;
Instep 310, TRC-FE directly or by PD-FE to label switched path all operator's intermediate equipments of process and edge device issue label switched path and set up order; Carry resource information in the described order;
Instep 311, after described operator intermediate equipment receives described order, according to its resource information configuration node label swap table that carries; After described provider edge equipment receives described order, set up pseudo-line, configuration virtual connections group is with the stream filter table and with both bindings;
Instep 312, according to described node label swap table and routing information, for described transmission network service is set up label switched path;
Instep 313, after described label switched path is set up, but TRC-FE to PD-FE feedback resources acquired information, PD-FE management control also transmits described transmission network service.
Referring to Fig. 5, be the composition schematic diagram of the realization system of transport service in the NGN network of RACF control that the embodiment of the invention provides.
Under the NGN framework of RACF control, manage and control as follows to transmitting Network:
1, user CE1 initiates service request, and mode can be by PORTAL, SIP signaling etc.; Operation controlling entity SCF admits this business according to local user's subscription data and analysis of strategies after receiving this request;
If 2 operation controlling entity are admitted this business, then to end subscriber is initiated service request.End subscriber CE2 is received that this request back judges whether to admit this business according to local information and strategy;
3, end subscriber CE2 is responded service request;
If 4 admit this business to end subscriber CE2, then operation controlling entity is initiated service request to PD-FE;
5, after PD-FE receives service request, initiate resource request to TRC-FE.After TRC-FE receives resource request, analyze this business the TUNNELLSP between the provider edge equipment (PE, Provider Edge) of process whether set up.If set up, then judge whether to satisfy resource requirement;
If the TUNNEL LSP between 6 PE does not satisfy or do not set up TUNNEL LSP, then TRC-FE initiates path computing request to PCE, with the path of TUNNEL LSP between the PE that selects professional process.If according to tactful needs service protection, then need between two PE, calculate two paths, be respectively operating path and protection path.PCE feeds back to TRC-FE with result of calculation subsequently;
If 7 management is the PBB-TE/PBT network, the business of setting up before then TRC-FE also will need is determined B-VLAN and the B-MAC that TUNNEL is connected with strategy.If what signaling needed is the IP address, the routing information that TRC-FE also will calculate PCE changes into the IP address information.If suitable path is arranged, then TRC-FE initiates the foundation order of TUNNEL LSP to PE, and the parameter that order is carried is: information such as task identifier, source PE node, purpose PE node, explicit route information, B-VLAN+B-MAC label, network QOS parameter, protection relation, priority; Initiate branch road/PW passage respectively to two PE then and set up order, the parameter that order is carried is task identifier, target P E address, network QOS parameter, priority, protection relation etc.There is not the GMPLS control protocol if transmit network element, then also need to the path in the middle of all of process P nodes initiate TUNNEL and connect and set up order, command parameter is: target P node address, inbound port number, go into label, outbound port number, outgoing label, network QOS parameter etc., the label here is the label of broad sense, in the T-MPLS layer network, be the LSP label; In the SDH network, be VC12/VC3/VC4 time slot label; In the light crossover network, be the wavelength label; In the PBB-TE/PBT network, be the VLAN+MAC label.
8, after the GMPLS control module of PE is received the foundation order of TUNNEL LSP, initiate to set up the signaling of the TUNNEL LSP between PE, thereby set up the TUNNEL LSP of PE-PE; After receiving that branch road/PW passage is set up order, set up PW, configuration VCG and Business Stream and with both bindings; After the P node receives that TUNNEL connects the foundation order, according to command parameter configuration node label swap table.
9, TUNNEL LSP sets up;
10, TRC-FE carries out the resource request response according to existing resource situation or newly-built resource results to PD-FE;
11, after PD-FE receives resource request response,,, issue that gate is opened simultaneously according to the content of service request according to parameters such as local policy decision network QOSs, shutdown command and QOS parameter, task identifier etc.;
12, after the PE node is received the gate order,, then the pairing branch road of this task identifier/PW passage and the pairing TUNNEL LSP of this task identifier are bound if gate is opened;
13, PD-FE responds service request;
14, operation controlling entity responds the service request of user CE1;
If 15 user CE1 service request are admitted, then user traffic just can transmit on the transmission resource; So-called Business Stream is that the User IP stream that is different from below original NGN (is identified by five-tuple: source address, source port number, destination address, destination slogan, protocol number), the stream here is the transparent transmission stream of customer flow, such as port flow, and port+VLAN stream etc.The service traffics data that like this, just do not need perception user reality.
So-called TUNNEL LSP can be the connections such as VC12/VC3/VC4 between the line interface of PE, also can be that B-VLAN+D-MAC connects, and also can be T-MPLS LSP.
So-called circuit connects to circuit, it can be VC4/VC3/VC12 interconnection (SDH) between thing both direction glazing line interface base on the P node, also can be the label exchange connection (as the VLAN+MAC exchange, perhaps T-MPLSTUNNEL label exchange) on the P node, also can be the wavelength exchange.So-called branch road/PW, may be PDH tributary interface (as the some or a plurality of 2M interfaces on SDH/MSTP equipment), also may be interfaces such as ATM/ETH and its encapsulation is mapped among the VCG, or some AC interfaces and being mapped among the PW (define in IETF PWE3 working group), and this PW can be carried on T-MPLSTUNNEL or the PBT/PBB-TE TUNNEL.
The binding of so-called branch road/PW and TUNNEL LSP, be meant the PDH tributary interface is cross connected to some VC4/VC3/VC12 on the circuit, perhaps the VCG at interface places such as ATM/ETH being entwined is connected to some VC4/VC3/VC12 on the circuit, perhaps PW such as ATM/ETH/PDH/FR is mapped on certain TUNNEL LSP.
In the entire process process, in the interface protocol of each functional entity, all need to carry this parameter of task identifier, task identifier is distributed by SCF.After PE receives the gate order, the PW/ bypass passage and the TUNNEL LSP of this task identifier correspondence associated.TUNNEL LSP may corresponding a plurality of task identifiers, only need that task identifier is identical just can to associate.
In the collection of resource, can adopt the existing interface of PCE to carry out.
The implementation method and the system of transport service in the NGN network of RACF control that the embodiment of the invention provides, by in the NGN network of RACF control, including the PCE/GMPLS functional entity that transmits net in, resource control function entity collaborative work in the NGN network of described PCE/GMPLS functional entity and RACF control, to transmitting management and the control that network service is concentrated, and set up label switched path and transmit described business; In the NGN network of RACF control, make up the transmission net of high availability, unified business operation system.
Need to prove, include the PCE/GMPLS functional entity that transmits net in the NGN of RACS control, the method that is implemented in transport service in the NGN network of RACS control follows the implementation method principle of transport service in the NGN network of RACF control identical.
Referring to Fig. 6, be the schematic flow sheet of implementation method first embodiment of transport service in the NGN network of RACS control that the embodiment of the invention provides.
Instep 400, in the NGN network of RACS control, include the PCE/GMPLS that transmits net in, to realize that the RACS network is to transmitting Network Management and control;
Instep 401, function (Access-Resource and Admission Control Function is carried out in access-in resource in the NGN network of RACS control and admittance control, Access-Resource and Admission Control Function) receives from being the request of RACS traffic assignments resource based on the policy deciding functional entity (SPDF, Service-based Policy Decision Function) of business;
Instep 402, Access-Resource and Admission Control Function analyze described transmission network service the label switched path between the provider edge equipment of process whether set up;
Instep 403,, judge then whether it satisfies the resource requirement that transmits network service if label switched path is set up;
Instep 404, not have under the situation of foundation at resource requirement that satisfy not to transmit network service or label switched path, Access-Resource and Admission Control Function is initiated path computing request to PCE, is passed through label switched path between the provider edge equipment to select described transmission network service;
Instep 405, Access-Resource and Admission Control Function receives the path computing result from PCE, obtains routing information; Need to prove that the routing information here can be whole routing information, also can be the routing information of part;
Instep 406,, obtain corresponding resource information according to the transmission net type of described Access-Resource and Admission Control Function management;
Instep 407, Access-Resource and Admission Control Function is initiated order to set up label switched path to provider edge equipment, perhaps initiate order to set up label switched path to operator's equipment by SPDF, carry resource information in the described order, include: parameters such as task identifier, source provider edge equipment, purpose provider edge equipment and/or routing information, label, network QOS parameter, protection relation, priority;
Need to prove in this step, whether carry routing information in the described order, need whether return whole routing informations according to PCE in thestep 405 and decide to Access-Resource and Admission Control Function;
If instep 405, after PCE calculates the path, just whole routing informations is returned to Access-Resource and Admission Control Function, then in thestep 407, Access-Resource and Admission Control Function is carried at routing information and sends to operator's equipment in the described order, perhaps send to operator's equipment by SPDF, concrete handling process is: Access-Resource and Admission Control Function is initiated path computing request (containing task identifier) to PCE after having received the resource request of SPDF, after PCE calculates and finishes, return whole routing informations, after Access-Resource and Admission Control Function has been received routing information, directly initiate path foundation order, in this order, comprise described routing information to operator's equipment or by SPDF;
If instep 405, after PCE calculates the path, just, promptly whether there is active path to return to Access-Resource and Admission Control Function with the routing information of part, then in thestep 407, Access-Resource and Admission Control Function does not carry routing information in described order; Concrete handling process is: Access-Resource and Admission Control Function is initiated path computing request (containing task identifier) to PCE after having received the resource request of SPDF, after PCE calculates and finishes, do not return whole routing informations, but tell whether Access-Resource and Admission Control Function has available path, after Access-Resource and Admission Control Function has been received sure information, initiate path foundation order to operator's equipment or by SPDF to operator's equipment, in this order, do not comprise routing information.After operator's equipment is received this order, initiate path computing request to PCE, PCE returns detailed path information according to task identifier again.
Instep 408, the source provider edge equipment receives after described label switched path sets up order, initiates to set up label switched path signaling between the provider edge equipment to the purpose provider edge equipment;
Instep 409,, set up the label switched path between source provider edge equipment and the purpose provider edge equipment according to resource information of carrying in the described order and routing information;
Instep 410, after described label switched path was set up, management control also transmitted described transmission network service.
Referring to Fig. 7, be the schematic flow sheet of implementation method second embodiment of transport service in the NGN network of RACS control that the embodiment of the invention provides.
Instep 500, in the NGN network of RACS control, include PCE/GMPLS in, to realize that the RACS network is to transmitting Network Management and control;
Instep 501, Access-Resource and Admission Control Function receives from being the request of RACS traffic assignments resource based on SPDF;
Instep 502, Access-Resource and Admission Control Function analyze described RACS business the label switched path between the provider edge equipment of process whether set up;
Instep 503,, judge then whether it satisfies the resource requirement that transmits the RACS business if label switched path is set up;
Instep 504, do not have under the situation of foundation at the resource requirement or the label switched path that do not satisfy transmission RACS business, Access-Resource and Admission Control Function is initiated path computing request to PCE, to select the professional label switched path that is passed through between the provider edge equipment of described RACS;
Instep 505, Access-Resource and Admission Control Function receives the path computing result from PCE, obtains routing information; Need to prove that the routing information here can be whole routing information, also can be the routing information of part;
Instep 506,, obtain corresponding resource information according to the transmission net type of described Access-Resource and Admission Control Function management;
Instep 507, Access-Resource and Admission Control Function is directly initiated order to set up label switched path to provider edge equipment, perhaps initiate order to set up label switched path to provider edge equipment by SPDF, carry resource information in the described order, include: parameters such as task identifier, source provider edge equipment, purpose provider edge equipment and/or routing iinformation, label, network QOS parameter, protection relation, priority;
Need to prove in this step, whether carry routing information in the described order, need whether return whole routing informations according to PCE in thestep 505 and decide to Access-Resource and Admission Control Function;
If instep 505, after PCE calculates the path, just whole routing informations is returned to Access-Resource and Admission Control Function, then in thestep 507, Access-Resource and Admission Control Function is carried at routing information in the described order, directly send to operator's equipment, perhaps described order is sent to operator's equipment by SPDF, concrete handling process is: Access-Resource and Admission Control Function is initiated path computing request (containing task identifier) to PCE after having received the resource request of SPDF, PCE returns whole routing informations, after Access-Resource and Admission Control Function has been received routing information after calculating and finishing, directly initiate path foundation order to operator's equipment, in this order, comprise described routing information to operator's equipment or by SPDF;
If instep 505, after PCE calculates the path, just, promptly whether there is active path to return to Access-Resource and Admission Control Function with the routing information of part, then in thestep 507, Access-Resource and Admission Control Function does not carry routing information in described order; Concrete handling process is: Access-Resource and Admission Control Function is initiated path computing request (containing task identifier) to PCE after having received the resource request of SPDF, after PCE calculates and finishes, do not return whole routing informations, but tell whether Access-Resource and Admission Control Function has available path, after Access-Resource and Admission Control Function has been received sure information, directly initiate path foundation order to operator's equipment, in this order, do not comprise routing information to operator's equipment or by SPDF.After operator's equipment is received this order, initiate path computing request to PCE, PCE returns detailed path information according to task identifier again.
Instep 508, the source provider edge equipment receives after described label switched path sets up order, initiates to set up label switched path signaling between the provider edge equipment to the purpose provider edge equipment;
Instep 509,, set up the label switched path between source provider edge equipment and the purpose provider edge equipment according to resource information of carrying in the described order and routing information;
Instep 510, Access-Resource and Admission Control Function directly sends the order set up branch road/pseudo-line passage to provider edge equipment, but perhaps Access-Resource and Admission Control Function to SPDF feedback resources acquired information, again by SPDF issue set up branch road/pseudo-line passage order to provider edge equipment;
Instep 511, provider edge equipment is bound the pairing branch road of task identifier/pseudo-line passage and the pairing label switched path of this task identifier, to realize management and the control of SPDF to business.
Referring to Fig. 8, be the schematic flow sheet of implementation method the 3rd embodiment of transport service in the NGN network of RACS control that the embodiment of the invention provides.
In step 600, in the NGN network of RACS control, include PCE/GMPLS in, with the NGN network of realizing RACS control to transmitting Network Management and control;
In step 601, Access-Resource and Admission Control Function receives the request for transmission network service Resources allocation from SPDF;
In step 602, Access-Resource and Admission Control Function analyze described transmission network service the label switched path between the provider edge equipment of process whether set up;
In step 603,, judge then whether it satisfies the resource requirement that transmits network service if label switched path is set up;
In step 604, not have under the situation of foundation at resource requirement that satisfy not to transmit network service or label switched path, Access-Resource and Admission Control Function is initiated path computing request to PCE, is passed through label switched path between the provider edge equipment to select described transmission network service;
In step 605, Access-Resource and Admission Control Function receives the path computing result from PCE, obtains routing information; Need to prove that the routing information here can be whole routing information, also can be the routing information of part;
In step 606,, obtain corresponding resource information according to the transmission net type of described Access-Resource and Admission Control Function management;
In step 607, Access-Resource and Admission Control Function is directly initiated order to set up label switched path to provider edge equipment, perhaps initiate order to set up label switched path to provider edge equipment by PSDF, carry resource information in the described order, include: parameters such as task identifier, source provider edge equipment, purpose provider edge equipment and/or routing information, label, network QOS parameter, protection relation, priority;
Need to prove in this step, whether carry routing information in the described order, need whether return whole routing informations according to PCE in the step 605 and decide to Access-Resource and Admission Control Function;
If in step 605, after PCE calculates the path, just whole routing informations is returned to Access-Resource and Admission Control Function, then in the step 607, Access-Resource and Admission Control Function is carried at routing information in the described order, directly sends to operator's equipment, perhaps will send to operator's equipment in the described order by SPDF; Concrete handling process is: Access-Resource and Admission Control Function is initiated path computing request (containing task identifier) to PCE after having received the resource request of SPDF, after PCE calculates and finishes, return whole routing informations, after Access-Resource and Admission Control Function has been received routing information, directly initiate the path and set up order to operator's equipment, perhaps initiate the path to operator's equipment and set up order, in this order, comprise described routing information by SPDF;
If in step 605, after PCE calculates the path, just, promptly whether there is active path to return to Access-Resource and Admission Control Function with the routing information of part, then in the step 607, Access-Resource and Admission Control Function does not carry routing information in described order; Concrete handling process is: Access-Resource and Admission Control Function is initiated path computing request (containing task identifier) to PCE after having received the resource request of SPDF, after PCE calculates and finishes, do not return whole routing informations, but tell whether Access-Resource and Admission Control Function has available path, after Access-Resource and Admission Control Function has been received sure information, directly initiate the path and set up order, perhaps initiate the path to operator's equipment and set up order, in this order, do not comprise routing information by SPDF to operator's equipment.After operator's equipment is received this order, initiate path computing request to PCE, PCE returns detailed path information according to task identifier again.
In step 608, judge the equipment on the path of process whether all whether support generalized multiprotocol label switching (GMPLS) protocol, if change step 609 over to; If not, then change step 610 over to;
In step 609, Access-Resource and Admission Control Function is perhaps initiated label switched path by SDPF to provider edge equipment and is set up order directly to provider edge equipment; After this flow process is identical with second embodiment with first embodiment, in this no longer repeat specification;
In step 610, Access-Resource and Admission Control Function directly or by SPDF to label switched path all operator's intermediate equipments of process and edge device issue label switched path and set up order; Carry resource information in the described order;
In step 611, after described operator intermediate equipment receives described order, according to its resource information configuration node label swap table that carries; After described provider edge equipment receives described order, set up pseudo-line, configuration virtual connections group and stream filter table, and with both bindings;
In step 612, according to described node label swap table and routing information, for described transmission network service is set up label switched path;
In step 614, after described label switched path is set up, but Access-Resource and Admission Control Function to SPDF feedback resources acquired information, SPDF management control also transmits described transmission network service.
Referring to Figure 10, be the composition schematic diagram of the realization system of transport service in the NGN network of RACS control that the embodiment of the invention provides.
Manage and control as follows to transmitting Network under the NGN framework of RACS control:
1, user CE1 initiates service request, and mode can be by PORTAL, SIP signaling etc.; Operation controlling entity application function (AF, Application Function) is admitted this business according to local user's subscription data and analysis of strategies after receiving this request;
If 2 operation controlling entity are admitted this business, then to end subscriber is initiated service request.End subscriber CE2 is received that this request back judges whether to admit this business according to local information and strategy;
3, end subscriber CE2 is responded service request;
If 4 admit this business to end subscriber CE2, then operation controlling entity is initiated service request to the policy deciding functional entity (SPDF, Service-based Policy Decision Function) based on business;
5, after SPDF receives service request, initiate resource request to access-in resource and accommodating control function entity (Access-Resource and Admission Control Function, Access-Resource and Admission Control Function).After Access-Resource and Admission Control Function is received resource request, analyze this business the TUNNEL LSP between the provider edge equipment (PE, Provider Edge) of process whether set up.If set up, then judge whether to satisfy resource requirement;
If the TUNNEL LSP between 6 PE does not satisfy or do not set up TUNNEL LSP, then Access-Resource and Admission Control Function is initiated path computing request to PCE, with the path of TUNNEL LSP between the PE that selects professional process.If according to tactful needs service protection, then need between two PE, calculate two paths, be respectively operating path and protection path.PCE feeds back to Access-Resource and Admission Control Function with result of calculation subsequently;
If 7 management is the PBB-TE/PBT network, the business of setting up before then Access-Resource and Admission Control Function also will need is determined B-VLAN and the B-MAC that TUNNEL is connected with strategy.If what signaling needed is the IP address, the routing information that Access-Resource and Admission Control Function also will calculate PCE changes into the IP address information.If suitable path is arranged, then Access-Resource and Admission Control Function is initiated the foundation order of TUNNEL LSP to PE, and the parameter that order is carried is: information such as task identifier, source PE node, purpose PE node, explicit route information, B-VLAN+B-MAC label, network QOS parameter, protection relation, priority; Initiate branch road/PW passage respectively to two PE then and set up order, the parameter that order is carried is task identifier, target P E address, network QOS parameter, priority, protection relation etc.There is not the GMPLS control protocol if transmit network element, then also need to the path in the middle of all of process P nodes initiate TUNNEL and connect and set up order, command parameter is: target P node address, inbound port number, go into label, outbound port number, outgoing label, network QOS parameter etc., the label here is the label of broad sense, in the T-MPLS layer network, be the LSP label; In the SDH network, be VC12/VC3/VC4 time slot label; In the light crossover network, be the wavelength label; In the PBB-TE/PBT network, be the VLAN+MAC label.
8, after the GMPLS control module of PE is received the foundation order of TUNNEL LSP, initiate to set up the signaling of the TUNNEL LSP between PE, thereby set up the TUNNEL LSP of PE-PE; After receiving that branch road/PW passage is set up order, set up PW, configuration VCG and Business Stream and with both bindings; After the P node receives that TUNNEL connects the foundation order, according to command parameter configuration node label swap table.
9, TUNNEL LSP sets up;
10, Access-Resource and Admission Control Function carries out the resource request response according to existing resource situation or newly-built resource results to SPDF;
11, after SPDF receives resource request response,,, issue that gate is opened simultaneously according to the content of service request according to parameters such as local policy decision network QOSs, shutdown command and QOS parameter, task identifier etc.;
12, after the PE node is received the gate order,, then the pairing branch road of this task identifier/PW passage and the pairing TUNNEL LSP of this task identifier are bound if gate is opened;
13, SPDF responds service request;
14, operation controlling entity responds the service request of user CE1;
If 15 user CE1 service request are admitted, then user traffic just can transmit on the transmission resource; So-called Business Stream is that the User IP stream that is different from below original RACS (is identified by five-tuple: source address, source port number, destination address, destination slogan, protocol number), the stream here is the transparent transmission stream of customer flow, such as port flow, and port+VLAN stream etc.The service traffics data that like this, just do not need perception user reality.
So-called TUNNEL LSP can be the connections such as VC12/VC3/VC4 between the line interface of PE, also can be that B-VLAN+D-MAC connects, and also can be T-MPLS LSP.
So-called circuit connects to circuit, it can be VC4/VC3/VC12 interconnection (SDH) between thing both direction glazing line interface base on the P node, also can be the label exchange connection (as the VLAN+MAC exchange, perhaps T-MPLSTUNNEL label exchange) on the P node, also can be the wavelength exchange.So-called branch road/PW, may be PDH tributary interface (as the some or a plurality of 2M interfaces on SDH/MSTP equipment), also may be interfaces such as ATM/ETH and its encapsulation is mapped among the VCG, or some AC interfaces and being mapped among the PW (define in IETF PWE3 working group), and this PW can be carried on T-MPLSTUNNEL or the PBT/PBB-TE TUNNEL.
The binding of so-called branch road/PW and TUNNEL LSP, be meant the PDH tributary interface is cross connected to some VC4/VC3/VC12 on the circuit, perhaps the VCG at interface places such as ATM/ETH being entwined is connected to some VC4/VC3/VC12 on the circuit, perhaps PW such as ATM/ETH/PDH/FR is mapped on certain TUNNEL LSP.
In the entire process process, in the interface protocol of each functional entity, all need to carry this parameter of task identifier, task identifier is distributed by AF.After PE receives the gate order, the PW/ bypass passage and the TUNNEL LSP of this task identifier correspondence associated.TUNNEL LSP may corresponding a plurality of task identifiers, only need that task identifier is identical just can to associate.
In the collection of resource, can adopt the existing interface of PCE to carry out.
The implementation method and the system of transport service in the NGN network of RACS control that the embodiment of the invention provides, by in the NGN network of RACS control, including PCE/GMPLS in, resource control function entity collaborative work in the NGN network of described PCE/GMPLS and RACS control, to transmitting management and the control that network service is concentrated, and set up label switched path and transmit described transmission network service; In the NGN network of RACS control, make up the transmission net of high availability, unified business operation system.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential hardware platform, can certainly all implement by hardware.Based on such understanding, all or part of can the embodying that technical scheme of the present invention contributes to background technology with the form of software product, this computer software product can be stored in the storage medium, as ROM/RAM, magnetic disc, CD etc., comprise that some instructions are with so that a computer equipment (can be a personal computer, server, the perhaps network equipment etc.) carry out the described method of some part of each embodiment of the present invention or embodiment.
Above disclosed only is an embodiment of the present invention, can not limit the present invention's interest field certainly with this, and therefore the equivalent variations of doing according to claim of the present invention still belongs to the scope that the present invention is contained.
Claims (38)
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008100259468ACN101488900A (en) | 2008-01-18 | 2008-01-18 | Method and system for implementing service transmission in next generation network |
| PCT/CN2009/070164WO2009094923A1 (en) | 2008-01-18 | 2009-01-15 | Implementing method and system for transmitting service in next generation network |
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| CNA2008100259468ACN101488900A (en) | 2008-01-18 | 2008-01-18 | Method and system for implementing service transmission in next generation network |
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| CN2008101906075ADivisionCN101577932B (en) | 2008-01-18 | 2008-01-18 | Method and system for realizing transmission service in network of next generation |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8743686B2 (en) | 2008-10-15 | 2014-06-03 | Huawei Technologies Co., Ltd. | Method, device, and system for admission control in metropolitan area network |
| CN106850435A (en)* | 2016-12-16 | 2017-06-13 | 北京格林伟迪科技股份有限公司 | A kind of cross-domain end-to-end label exchange route setting method and system |
| CN111600795A (en)* | 2020-05-26 | 2020-08-28 | 新华三信息安全技术有限公司 | Virtual edge device establishing method, controller and server |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US10922623B2 (en) | 2017-04-18 | 2021-02-16 | At&T Intellectual Property I, L.P. | Capacity planning, management, and engineering automation platform |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100462408B1 (en)* | 2002-12-10 | 2004-12-17 | 한국전자통신연구원 | A Fast Re-route Method Using GMPLS in Optical Transport Networks |
| CN1595887A (en)* | 2003-09-08 | 2005-03-16 | 华为技术有限公司 | A next generation network system and resource management method |
- 2008
- 2008-01-18CNCNA2008100259468Apatent/CN101488900A/enactivePending
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8743686B2 (en) | 2008-10-15 | 2014-06-03 | Huawei Technologies Co., Ltd. | Method, device, and system for admission control in metropolitan area network |
| CN106850435A (en)* | 2016-12-16 | 2017-06-13 | 北京格林伟迪科技股份有限公司 | A kind of cross-domain end-to-end label exchange route setting method and system |
| CN111600795A (en)* | 2020-05-26 | 2020-08-28 | 新华三信息安全技术有限公司 | Virtual edge device establishing method, controller and server |
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