CN100542121C - A kind of method and system of communication from public telephone switching network to IP multimedia subsystem - Google Patents
A kind of method and system of communication from public telephone switching network to IP multimedia subsystem Download PDFInfo
- Publication number
- CN100542121C CN100542121C CNB2006101270446A CN200610127044A CN100542121C CN 100542121 C CN100542121 C CN 100542121C CN B2006101270446 A CNB2006101270446 A CN B2006101270446A CN 200610127044 A CN200610127044 A CN 200610127044A CN 100542121 C CN100542121 C CN 100542121C
- Authority
- CN
- China
- Prior art keywords
- network
- quality
- pstn
- service
- qos
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/66—Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a kind of method of communication from public telephone switching network to IP multimedia subsystem, this method is: public switched telephone network (PSTN) one side is inserted the strategy execution unit in the IP bearer network transport layer of IP Multimedia System and public switched telephone network (PSTN) point of interface; After MGCF entity in the IP Multimedia System is received the service request that public switched telephone network (PSTN) sends, send the service quality authorization request to Resource and Admission Control Sub-system; Resource and Admission Control Sub-system is finished service quality and is guaranteed to handle according to described service quality authorization request, and the concurrent affair quality policy that takes is given the strategy execution unit; Described quality of service policy is installed in the strategy execution unit.The invention also discloses a kind of communication system simultaneously.The present invention increases the strategy execution unit by public switched telephone network (PSTN) one side in IP bearer network transport layer PSTN is controlled to the service quality of the data flow of IP Multimedia System.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of public switched telephone network (PSTN) (PublicSwitched Telephone Network, PSTN) to internet protocol multimedia subsystem (IP MultimediaSubsystem, IMS) method for communicating and system.
Background technology
Along with the continuous increase of internet (Internet) scale, various network services are fallen over each other to emerge in large numbers, and advanced multimedia communications system emerges in an endless stream.Because real time business is comparatively responsive to characteristics such as network transfer delay, delay jitters, when sudden high text transportation protocol (FTP) being arranged on the network or contain the business such as HTTP (HTTP) of image file, real time business will be subjected to very big influence; On the other hand, a large amount of bandwidth because multimedia service has accounted for, the key business that existing network will guarantee just is difficult to be transmitted reliably.So miscellaneous service service quality (Qulity of Service, QoS) arise at the historic moment by technology.Internet engineering task group (IETF) has been advised a lot of service models and mechanism, to satisfy the demand of QoS.
Operator and the user of enterprises and institutions have the higher degree of awareness to ethernet technology and end-to-end ethernet technology.Ethernet technology becomes one of major technique of building unification of three nets, metropolitan area network future, and Ethernet service will have great development in the future market.
At these situations, the packet network architecture of the telecommunications of the European Telecommunication Standard committee (ETSI) and the Internet converged services and high-level network protocol (TISPAN) (Next Generation Networking, NGN) in, between application layer and transport layer, introduced Resource and Admission Control Sub-system (Resource AdmissionControl Subsystem, RACS), the resource that is used for the unified management bearer network, and provide control based on strategy, the QoS that comprises bearer network, (Network Address Translation NAT) passes through RACS and visits and control network address translation.
The RACS that defines among the TISPAN as shown in Figure 1, the function of RACS provides QoS control, finishes functions such as QoS route, resource reservation.RACS mainly comprises business game decision making function (Service PolicyDecision Function, SPDF) entity and Access-Resource and Admission Control Function (Access-ResourceAdmission Control Function, Access-Resource and Admission Control Function) entity.Wherein, SPDF provides a single tie point to upper layer application, the location is arranged simultaneously, select the function of Access-Resource and Admission Control Function, and it is also controlled the Border Gateway function (Border Gateway Function, BGF) entity is finished functions such as NAT, Firewall Traversing simultaneously.Access-Resource and Admission Control Function is responsible for access network resources management and QoS control.Application function (Application Function, AF) entity pass through Gq ' interface and SPDF mutual, transmit session service information.The Border Gateway function of transport layer (Border Gateway Function, BGF) entity and Resource Control Enforcement Function (Resource ControlEnforcement Function, RCEF) entity is the strategy execution unit of transport layer, SPDF among the RACS and Access-Resource and Admission Control Function make it carry out the QoS control strategy mainly by mutual with BGF, RCEF.Access-Resource and Admission Control Function and RCEF are mainly used in the control that inserts side QoS resource.
The RACS subsystem has control preferably, the problem that how the QoS resource of IMS network carries out control and management when still failing to solve with existing P STN network interworking to the QoS resource of IMS network.
Consult shown in Figure 2, the IMS network interworking scheme of the packet network architecture of the TISPAN of ETSI proposition at present, at MGCF (the Media Gateway ControlFunction of key-course by the IMS network, MGCF) signaling gateway function (the Signalling GatewayFunction of entity and PSTN network, SGF) entity interaction, at Tandem Gateway function (the TrunkingMedia Gateway Function of transport layer by the IP transmission network, T-MGF) entity and PSTN network interaction, interconnect and the conversion of format transmission message, reach the purpose of IMS network and PSTN network interworking.Wherein, MGCF and T-MGF are the external interface node of PSTN network, and MGCF is the signaling entry node of PSTN network, carries out the protocol conversion of the signaling aspect of PSTN network and IMS network.T-MGF is the carrying entry node of PSTN network, carries the conversion of aspect media coding.SGF carries out the conversion of Signaling System 7(SS-7) (SS7) to IP signaling.QoS can only guarantee the data flow from the IMS network to the PSTN network in the prior art, because QoS control is arranged in the IMS network, whether no matter with the PSTN network interworking, the data flow that the IMS network sends all can be carried out QoS control.
The QoS control signaling process of prior art scheme comprises following concrete steps as shown in Figure 3:
(Proxy-CSCF after P-CSCF) entity receives that session that the UE from the IMS network sends triggers, sends the request of QoS authorization control to RACS to Proxy Call Session Control Function in step 301, the IMS network;
After step 302, RACS received the QoS authorization control request that the P-CSCF in the IMS network sends, RACS finished QoS such as resource reservation and guarantees to handle;
After step 303, RACS finished QoS such as resource reservation and guarantee to handle, the BGF of IMS network UE side issued qos policy in IP bearer network transport layer;
The BGF of IMS network UE side in step 304, the IP bearer network transport layer, receive and install the qos policy that RACS sends after, send qos policy to RACS response be installed;
After step 305, RACS received that qos policy that the BGF of IMS network UE side in the IP bearer network transport layer sends is installed response, the P-CSCF of RACS in the IMS network sent the response of QoS authorization control and replys.
(User Equipment UE) inserts strategy execution unit R CEF, the BGF that side has RACS control, and QoS resource management control can be provided the data flow that enters the IMS network from the UE side at user terminal.But do not have the strategy execution unit of RACS system control at the point of interface of PSTN network and IMS network, can't finish QoS resource management control the data flow that enters the IMS network from the PSTN network.
Summary of the invention
The invention provides a kind of method and system of communication from public telephone switching network to IP multimedia subsystem, when making IMS network and PSTN network interworking, the data flow that enters the IMS network from the PSTN network is realized that QoS guarantees.
The method of a kind of communication from public telephone switching network to IP multimedia subsystem provided by the invention, described method is inserted the strategy execution unit based on public switched telephone network (PSTN) one side in the IP bearer network transport layer of IP Multimedia System and public switched telephone network (PSTN) point of interface and is realized that this method comprises:
After MGCF entity in A, the IP Multimedia System is received the service request that the user terminal in the public switched telephone network (PSTN) sends, send the service quality authorization request to Resource and Admission Control Sub-system;
B, Resource and Admission Control Sub-system are finished service quality and are guaranteed to handle according to described service quality authorization request, and the concurrent affair quality policy that takes is given the strategy execution unit;
Described quality of service policy is installed in C, strategy execution unit.
After step C, this method further comprises:
The strategy execution unit sends quality of service policy to Resource and Admission Control Sub-system response is installed;
After Resource and Admission Control Sub-system receives that described quality of service policy is installed response, send service quality authorization control response to IP Multimedia System and reply.
A kind of communication system provided by the invention comprises:
The public switched telephone network (PSTN) that links to each other with user terminal after being used to receive the service request of user terminal, sends service request to IP Multimedia System;
The MGCF entity is arranged in the IP Multimedia System, be used to receive described service request after, send the service quality authorization request to Resource and Admission Control Sub-system;
Resource and Admission Control Sub-system comprises the quality of service policy transmitting element, and described quality of service policy transmitting element is used for according to described service quality authorization request, sends quality of service policy to the quality of service policy of IP bearer network transport layer single nothing is installed;
The strategy execution unit of IP bearer network transport layer comprises the quality of service policy installation unit, and described quality of service policy installation unit is used for receiving and installing described quality of service policy.
Described strategy execution unit further comprises:
Response unit is installed, is used for after the quality of service policy installation unit is installed described quality of service policy, send quality of service policy and response is installed to the message response unit;
Described Resource and Admission Control Sub-system further comprises:
The message response unit is used for according to described quality of service policy response being installed, and sends service quality authorization control response to the MGCF entity and replys.
The present invention's PSTN one side in the IP bearer network transport layer of IMS network and PSTN network point of interface increases BGF as the strategy execution unit, the PSTN network is entered the data flow of IMS network, carry out QoS resource management and the control of RACS by the BGF of PSTN one side in the IP bearer network transport layer, realize QoS control and the assurance of RACS, increased the transmission reliability that enters the data flow of IMS network from the PSTN network the whole network bidirectional traffic.
Description of drawings
Fig. 1 is a RACS functional frame composition in the prior art;
Fig. 2 is the network architecture diagram of prior art scheme;
Fig. 3 is the QoS control signaling process figure of prior art scheme;
Fig. 4 is the network architecture diagram of the embodiment of the invention one;
Fig. 5 enters the QoS control signaling process figure of the service request of IMS network media stream for the PSTN network for the embodiment of the invention one;
Fig. 6 is the QoS control signaling process figure of the embodiment of the invention one for the service request of two-way media stream;
Fig. 7 is the network architecture diagram of the embodiment of the invention two;
Fig. 8 enters the QoS control signaling process figure of the service request of IMS network media stream for the PSTN network of the embodiment of the invention two;
Fig. 9 is the QoS control signaling process figure for the service request of two-way media stream of the embodiment of the invention two;
Figure 10 is the network architecture diagram of the embodiment of the invention three;
Figure 11 enters the QoS control signaling process figure of the service request of IMS network media stream for the PSTN network of the embodiment of the invention three;
Figure 12 is the QoS control signaling process figure for the service request of two-way media stream of the embodiment of the invention three;
Figure 13 is for realizing the schematic flow sheet of method of the present invention;
Figure 14 A is a system construction drawing of the present invention;
Figure 14 B is the system construction drawing one of conversation control function unit among the present invention;
Figure 14 C is the system construction drawing two of conversation control function unit among the present invention;
Figure 14 D is the system construction drawing three of conversation control function unit among the present invention;
Figure 14 E is the structure chart of Resource and Admission Control Sub-system among the present invention and strategy execution unit.
Embodiment
The present invention's PSTN one side in the IP bearer network transport layer of IMS network and PSTN network point of interface is inserted BGF as the strategy execution unit, by RACS the BGF of PSTN one side in the IP bearer network transport layer is controlled, when making IMS network and PSTN network interworking, the data flow that enters the IMS network from the PSTN network is carried out the control of QoS resource.
Referring to shown in Figure 13, realize that method of the present invention may further comprise the steps:
User terminal in step 1301, the public switched telephone network (PSTN) sends service request to the IP Multimedia System network, and the conversation control function entity in the IP Multimedia System network continues to send the service quality authorization request to Resource and Admission Control Sub-system after receiving service request;
After step 1302, Resource and Admission Control Sub-system are received the service quality authorization request that conversation control function entity sends, finish service quality and guarantee to handle, and issue quality of service policy to the strategy execution unit;
The quality of service policy that step 1303, strategy execution unit are received and the installation resource accommodation control subsystem sends.
The present invention will be described in detail below in conjunction with accompanying drawing.
Referring to the system construction drawing of the present invention shown in Figure 14 A.System of the present invention comprises: the strategy execution unit 1414 of the public switched telephone network (PSTN) 1411 that links to each other with user terminal, conversation control function unit 1412, RACS 1413, IP bearer network transport layer.Wherein, the public switched telephone network (PSTN) 1411 that links to each other with user terminal is used for sending service request to IP Multimedia System; Conversation control function unit 1412 is used for according to described service request, sends the service quality authorization request to RACS 1413; RACS 1413 is used for according to the service quality authorization request, sends the strategy execution unit 1414 of quality of service policy to IP bearer network transport layer; The strategy execution unit 1414 of IP bearer network transport layer is used to install described quality of service policy.
System construction drawing one referring to the conversation control function of the present invention unit shown in Figure 14 B.Conversation control function of the present invention unit entity comprises: MGCF 1421, I-CSCF 1422, S-CSCF 1423, P-CSCF1424.Wherein, MGCF 1421 sends to I-CSCF 1422 after being used for receiving the service request that the UE of public switched telephone network (PSTN) sends; I-CSCF 1422 is used for this service request is sent to S-CSCF 1423; S-CSCF 1423 is used for this service request is sent to P-CSCF 1424; P-CSCF 1424 is used for according to described service request, sends the service quality authorization request to RACS.
System construction drawing two referring to the conversation control function of the present invention unit shown in Figure 14 C.Conversation control function of the present invention unit entity comprises: MGCF 1431, IBCF 1432.Wherein MGCF 1431 is used for after the service request that the UE that receives public switched telephone network (PSTN) sends this service request being sent to IBCF 1432; IBCF 1432 is used for according to described service request, sends the service quality authorization request to RACS.
System construction drawing three referring to the conversation control function of the present invention unit shown in Figure 14 D.Conversation control function of the present invention unit entity comprises: P-CSCF 1441, are used for after the service request that the UE that receives public switched telephone network (PSTN) sends, and send the service quality authorization request to RACS.
Structure chart referring to Resource and Admission Control Sub-system and strategy execution unit among the present invention shown in Figure 14 E.RACS comprises quality of service policy transmitting element 1451, message response unit 1452 among the present invention; The strategy execution unit of IP bearer network comprises among the present invention: quality of service policy installation unit 1453, installation response unit 1454.Wherein, quality of service policy transmitting element 1451 is used for after receiving the service quality authorization request that sends from the conversation control function unit, sends quality of service policy to quality of service policy installation unit 1453; The quality of service policy that quality of service policy installation unit 1453 is used to receive and build-in services quality policy transmitting element 1451 sends; Response unit 1454 is installed is used for behind quality of service policy installation unit 1453 build-in services quality policies, send quality of service policy and response is installed to message response unit 1452; Message response unit 1452 is used for according to quality of service policy response being installed, and sends service quality authorization control response to the conversation control function unit and replys.
As shown in Figure 4, embodiments of the invention one are described, PSTN one side increases BGF in the IP of prior art scheme bearer network transport layer, P-CSCF provides the function mutual with RACS, by the BGF that the control of RACS system increases, finish the QoS management control that the PSTN network is entered the data flow of IMS network.
For the service request that the PSTN network enters IMS network media stream, QoS control signaling process comprises following concrete steps as shown in Figure 5:
P-CSCF in step 501, the IMS network sends the request of QoS authorization control to RACS after receiving that by MGCF in the IMS network and I/S-CSCF session that the UE from the PSTN network sends triggers;
After step 502, RACS received the QoS authorization control request that the P-CSCF in the IMS network sends, RACS finished QoS such as resource reservation and guarantees to handle;
After step 503, RACS finished QoS such as resource reservation and guarantee to handle, the BGF of PSTN one side issued qos policy in IP bearer network transport layer;
The BGF of PSTN one side in step 504, the IP bearer network transport layer, receive and install the qos policy that RACS sends after, send qos policy to RACS response be installed;
After step 505, RACS received that qos policy that the BGF of PSTN one side in the IP bearer network transport layer sends is installed response, the P-CSCF of RACS in the IMS network sent the response of QoS authorization control and replys.
Enter data flow in the IMS network for the PSTN network, when the P-CSCF in the IMS network receive trigger from the session of PSTN network after, send the request of QoS authorization control to RACS, RACS receives that QoS such as carrying out resource reservation after the request of QoS authorization control guarantees to handle, treat that RACS finishes assurance processing back BGF of PSTN one side in IP bearer network transport layer and issues qos policy, after the BGF of PSTN one side receives and qos policy is installed in the IP bearer network transport layer, send qos policy to RACS response is installed, send the response of QoS authorization control by the P-CSCF of RACS in the IMS network afterwards and reply.
After finishing this QoS control signaling process, when PSTN network and IMS network interworking, enter the Media Stream of IMS network, carry out the control of QoS resource and manage by the BGF of PSTN one side in the IP bearer network transport layer for the PSTN network.
Enter the service request that IMS network and IMS network enter the two-way media stream of PSTN network for the PSTN network, QoS control signaling process comprises following concrete steps as shown in Figure 6:
P-CSCF in step 601, the IMS network sends the request of QoS authorization control to RACS after receiving that by MGCF in the IMS network and I/S-CSCF session that the UE from the PSTN network sends triggers;
After step 602, RACS received the QoS authorization control request that the P-CSCF in the IMS network sends, RACS finished QoS such as resource reservation and guarantees to handle;
After step 603, RACS finished QoS such as resource reservation and guarantee to handle, the BGF of PSTN one side issued qos policy in IP bearer network transport layer;
The BGF of PSTN one side in step 604, the IP bearer network transport layer, receive and install the qos policy that RACS sends after, send qos policy to RACS response be installed;
After step 605, RACS received that qos policy that the BGF of PSTN one side in the IP bearer network transport layer sends is installed response, the P-CSCF of RACS in the IMS network sent qos policy and installs and reply;
P-CSCF in step 606, the IMS network sends the request of QoS authorization control to RACS after receiving that session that the UE from the IMS network sends triggers;
After step 607, RACS received the QoS authorization control request that the P-CSCF in the IMS network sends, RACS finished QoS such as resource reservation and guarantees to handle;
After step 608, RACS finished QoS such as resource reservation and guarantee to handle, the BGF of IMS network UE one side issued qos policy in IP bearer network transport layer;
The BGF of IMS network UE one side in step 609, the IP bearer network transport layer, receive and install the qos policy that RACS sends after, send qos policy to RACS response be installed;
After step 610, RACS received that qos policy that the BGF of IMS network UE one side in the IP bearer network transport layer sends is installed response, the P-CSCF of RACS in the IMS network sent qos policy and installs and reply.
Enter data flow in the IMS network for the PSTN network, when the P-CSCF in the IMS network receive trigger from the session of PSTN network after, send the request of QoS authorization control to RACS, RACS receives that QoS such as carrying out resource reservation after the request of QoS authorization control guarantees to handle, treat that RACS finishes assurance processing back BGF of PSTN one side in IP bearer network transport layer and issues qos policy, after the BGF of PSTN one side receives and qos policy is installed in the IP bearer network transport layer, send qos policy to RACS response is installed, send the qos policy installation by the P-CSCF of RACS in the IMS network afterwards and reply.
For the data flow that enters the PSTN network from the IMS network, when the P-CSCF in the IMS network receive trigger from the session of IMS network UE one side after, send the request of QoS authorization control to RACS, RACS receives that QoS such as carrying out resource reservation after the request of QoS authorization control guarantees to handle, treat that RACS finishes assurance processing back BGF of IMS network UE one side in IP bearer network transport layer and issues qos policy, after the BGF of IMS network UE one side receives and qos policy is installed in the IP bearer network transport layer, send qos policy by the P-CSCF of RACS in the IMS network and install and reply.
After finishing this QoS control signaling process, when PSTN network and IMS network interworking, the mutual service conversation of two-way media stream for PSTN network and IMS network carries out control of QoS resource and management jointly by the BGF of IMS network UE one side in IP bearer network transport layer and the BGF of PSTN one side in IP bearer network transport layer.
As shown in Figure 7, embodiments of the invention two are described, the PSTN side increases BGF in the IP of prior art scheme bearer network transport layer, by MGCF (Media Gateway Control Function, MGCF) entity provides the function mutual with RACS, by the BGF that the control of RACS system increases, finish the QoS management control that the PSTN network is entered the data flow of IMS network.In the present embodiment, replace P-CSCF that the BGF of PSTN side in the IP bearer network transport layer is controlled by MGCF; Continue the BGF of IMS network UE side in the IP bearer network transport layer is controlled by P-CSCF.
For the service request that the PSTN network enters IMS network media stream, QoS controls signaling process as shown in Figure 8, and concrete steps comprise:
MGCF in step 801, the IMS network sends the request of QoS authorization control to RACS after receiving that by the BGCF in the PSTN network session that the UE from the PSTN network sends triggers;
After step 802, RACS received the QoS authorization control request that the MGCF in the IMS network sends, RACS finished QoS such as resource reservation and guarantees to handle;
After step 803, RACS finished QoS such as resource reservation and guarantee to handle, the BGF of PSTN one side issued qos policy in IP bearer network transport layer;
The BGF of PSTN one side in step 804, the IP bearer network transport layer, receive and install the qos policy that RACS sends after, send qos policy to RACS response be installed;
After step 805, RACS received that qos policy that the BGF of PSTN one side in the IP bearer network transport layer sends is installed response, the MGCF of RACS in the IMS network sent the response of QoS authorization control and replys.
Enter data flow in the IMS network for the PSTN network, when the MGCF in the IMS network receive trigger from the session of PSTN network after, send the request of QoS authorization control to RACS, RACS receives that QoS such as carrying out resource reservation after the request of QoS authorization control guarantees to handle, treat that RACS finishes assurance processing back BGF of PSTN one side in IP bearer network transport layer and issues qos policy, after the BGF of PSTN one side receives and qos policy is installed in the IP bearer network transport layer, send qos policy to RACS response is installed, send the response of QoS authorization control by the P-CSCF of RACS in the IMS network afterwards and reply.
After finishing this QoS control signaling process, when PSTN network and IMS network interworking, enter the Media Stream of IMS network, carry out the control of QoS resource and manage by the BGF of PSTN one side in the IP bearer network transport layer for the PSTN network.
Enter the service request that IMS network and IMS network enter the two-way media stream of PSTN network for the PSTN network, QoS control signaling process may further comprise the steps as shown in Figure 9:
MGCF in step 901, the IMS network sends the request of QoS authorization control to RACS after receiving that by the BGCF in the PSTN network session that the UE from the PSTN network sends triggers;
After step 902, RACS received the QoS authorization control request that the MGCF in the IMS network sends, RACS finished QoS such as resource reservation and guarantees to handle;
After step 903, RACS finished QoS such as resource reservation and guarantee to handle, the BGF of PSTN one side issued qos policy in IP bearer network transport layer;
The BGF of PSTN one side in step 904, the IP bearer network transport layer, receive and install the qos policy that RACS sends after, send qos policy to RACS response be installed;
After step 905, RACS received that qos policy that the BGF of PSTN one side in the IP bearer network transport layer sends is installed response, the MGCF of RACS in the IMS network sent the response of QoS authorization control and replys;
P-CSCF in step 906, the IMS network sends the request of QoS authorization control to RACS after receiving that session that the UE from the IMS network sends triggers;
After step 907, RACS received the QoS authorization control request that the P-CSCF in the IMS network sends, RACS finished QoS such as resource reservation and guarantees to handle;
After step 908, RACS finished QoS such as resource reservation and guarantee to handle, the BGF of IMS network UE one side issued qos policy in IP bearer network transport layer;
The BGF of IMS network UE one side in step 909, the IP bearer network transport layer, receive and install the qos policy that RACS sends after, send qos policy to RACS response be installed;
After step 910, RACS received that qos policy that the BGF of IMS network UE one side in the IP bearer network transport layer sends is installed response, the P-CSCF of RACS in the IMS network sent the response of QoS authorization control and replys.
Enter data flow in the IMS network for the PSTN network, when the MGCF in the IMS network receive trigger from the session of PSTN network after, send the request of QoS authorization control to RACS, RACS receives that QoS such as carrying out resource reservation after the request of QoS authorization control guarantees to handle, treat that RACS finishes assurance processing back BGF of PSTN one side in IP bearer network transport layer and issues qos policy, after the BGF of PSTN one side receives and qos policy is installed in the IP bearer network transport layer, send qos policy to RACS response is installed, send the response of QoS authorization control by the MGCF of RACS in the IMS network afterwards and reply.
For the data flow that enters the PSTN network from the IMS network, when the P-CSCF in the IMS network receive trigger from the session of IMS network UE one side after, send the request of QoS authorization control to RACS, RACS receives that QoS such as carrying out resource reservation after the request of QoS authorization control guarantees to handle, treat that RACS finishes assurance processing back BGF of IMS network UE one side in IP bearer network transport layer and issues qos policy, after the BGF of IMS network UE one side receives and qos policy is installed in the IP bearer network transport layer, send the response of QoS authorization control by the P-CSCF of RACS in the IMS network and reply.
After finishing this QoS control signaling process, when PSTN network and IMS network interworking, the mutual service conversation of two-way media stream for PSTN network and IMS network carries out control of QoS resource and management jointly by the BGF of IMS network UE one side in IP bearer network transport layer and the BGF of PSTN one side in IP bearer network transport layer.
As shown in figure 10, embodiments of the invention three are described, the key-course of IMS network on the network architecture of prior art scheme and PSTN network junction inserts interconnect edge controlled function (Interconnection Border Control Function, IBCF) entity, the PSTN side increases BGF in IP bearer network transport layer.In the present embodiment, replace P-CSCF that the BGF of PSTN side in the IP bearer network transport layer is controlled by IBCF; Continue the BGF of IMS network UE side in the IP bearer network transport layer is controlled by P-CSCF.
The major function of IBCF is and the RACS system interaction, by RACS control BGF.The major function of BGF is a strategy execution, carries out the business game of RACS, to the data flow QoS resource control from PSTN network and IMS network interaction.
The service request QoS that enters IMS network media stream for the PSTN network controls signaling process as shown in figure 11, and concrete steps comprise:
IBCF in step 1101, the IMS network sends the request of QoS authorization control to RACS after receiving that by MGCF session that the UE from the PSTN network sends triggers;
After step 1102, RACS received the QoS authorization control request that the IBCF in the IMS network sends, RACS finished QoS such as resource reservation and guarantees to handle;
After step 1103, RACS finished QoS such as resource reservation and guarantee to handle, the BGF of PSTN one side issued qos policy in IP bearer network transport layer;
The BGF of PSTN one side in step 1104, the IP bearer network transport layer, receive and install the qos policy that RACS sends after, send qos policy to RACS response be installed;
After step 1105, RACS received that qos policy that the BGF of PSTN one side in the IP bearer network transport layer sends is installed response, the IBCF of RACS in the IMS network sent the response of QoS authorization control and replys.
Enter data flow in the IMS network for the PSTN network, when the IBCF in the IMS network receive trigger from the session of PSTN network after, send the request of QoS authorization control to RACS, RACS receives that QoS such as carrying out resource reservation after the request of QoS authorization control guarantees to handle, treat that RACS finishes assurance processing back BGF of PSTN one side in IP bearer network transport layer and issues qos policy, after the BGF of PSTN one side receives and qos policy is installed in the IP bearer network transport layer, send qos policy to RACS response is installed, send the response of QoS authorization control by the IBCF of RACS in the IMS network afterwards and reply.
After finishing this QoS control signaling process, when PSTN network and IMS network interworking, enter the Media Stream of IMS network, carry out the control of QoS resource and manage by the BGF of PSTN one side in the IP bearer network transport layer for the PSTN network.
Enter the service request that IMS network and IMS network enter the two-way media stream of PSTN network for the PSTN network, QoS control signaling process may further comprise the steps shown in 12 figure:
IBCF in step 1201, the IMS network sends the request of QoS authorization control to RACS after receiving that by MGCF session that the UE from the PSTN network sends triggers;
After step 1202, RACS received the QoS authorization control request that the IBCF in the IMS network sends, RACS finished QoS such as resource reservation and guarantees to handle;
After step 1203, RACS finished QoS such as resource reservation and guarantee to handle, the BGF of PSTN one side issued qos policy in IP bearer network transport layer;
The BGF of PSTN one side in step 1204, the IP bearer network transport layer, receive and install the qos policy that RACS sends after, send qos policy to RACS response be installed;
After step 1205, RACS received that qos policy that the BGF of PSTN one side in the IP bearer network transport layer sends is installed response, the IBCF of RACS in the IMS network sent the response of QoS authorization control and replys;
P-CSCF in step 1206, the IMS network sends the request of QoS authorization control to RACS after receiving that session that the UE from the IMS network sends triggers;
After step 1207, RACS received the QoS authorization control request that the P-CSCF in the IMS network sends, RACS finished QoS such as resource reservation and guarantees to handle;
After step 1208, RACS finished QoS such as resource reservation and guarantee to handle, the BGF of IMS network UE one side issued qos policy in IP bearer network transport layer;
The BGF of IMS network UE one side in step 1209, the IP bearer network transport layer, receive and install the qos policy that RACS sends after, send qos policy to RACS response be installed;
After step 1210, RACS received that qos policy that the BGF of IMS network UE one side in the IP bearer network transport layer sends is installed response, the P-CSCF of RACS in the IMS network sent the response of QoS authorization control and replys.
Enter data flow in the IMS network for the PSTN network, when the IBCF in the IMS network receive trigger from the session of PSTN network after, send the request of QoS authorization control to RACS, RACS receives that QoS such as carrying out resource reservation after the request of QoS authorization control guarantees to handle, treat that RACS finishes assurance processing back BGF of PSTN one side in IP bearer network transport layer and issues qos policy, after the BGF of PSTN one side receives and qos policy is installed in the IP bearer network transport layer, send qos policy to RACS response is installed, send the response of QoS authorization control by the IBCF of RACS in the IMS network afterwards and reply.
For the data flow that enters the PSTN network from the IMS network, when the P-CSCF in the IMS network receive trigger from the session of IMS network UE one side after, send the request of QoS authorization control to RACS, RACS receives that QoS such as carrying out resource reservation after the request of QoS authorization control guarantees to handle, treat that RACS finishes assurance processing back BGF of IMS network UE one side in IP bearer network transport layer and issues qos policy, after the BGF of IMS network UE one side receives and qos policy is installed in the IP bearer network transport layer, send the response of QoS authorization control by the P-CSCF of RACS in the IMS network and reply.
After finishing this QoS control signaling process, when PSTN network and IMS network interworking, the mutual service conversation of two-way media stream for PSTN network and IMS network carries out control of QoS resource and management jointly by the BGF of IMS network UE one side in IP bearer network transport layer and the BGF of PSTN one side in IP bearer network transport layer.
The present invention's PSTN one side in IP bearer network transport layer increases BGF, and the data flow that is used for the PSTN network is entered the IMS network is carried out the control of QoS resource, to guarantee the intercommunication of PSTN network and IMS network.P-CSCF in the IMS network can carry out alternately with RACS, by RACS the BGF of PSTN one side in the BGF of IMS network UE one side in the IP bearer network transport layer and the IP bearer network transport layer is controlled, realize the QoS of PSTN network and the two net bidirectional traffics of IMS network is guaranteed.MGCF in the IMS network and IBCF can replace P-CSCF and RACS to carry out alternately respectively, and the BGF of PSTN one side in the IP bearer network transport layer controlled, and still by P-CSCF the BGF of IMS network UE one side in the IP bearer network transport layer is controlled, finally can reach PSTN network and the two net bidirectional traffics of IMS network are realized the purpose that QoS guarantees.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (4)
1, a kind of method of communication from public telephone switching network to IP multimedia subsystem, it is characterized in that, described method is inserted the strategy execution unit based on public switched telephone network (PSTN) one side in the IP bearer network transport layer of IP Multimedia System and public switched telephone network (PSTN) point of interface and is realized that this method comprises the following steps:
After MGCF entity in A, the IP Multimedia System is received the service request that the user terminal in the public switched telephone network (PSTN) sends, send the service quality authorization request to Resource and Admission Control Sub-system;
B, Resource and Admission Control Sub-system are finished service quality and are guaranteed to handle according to described service quality authorization request, and the concurrent affair quality policy that takes is given the strategy execution unit;
Described quality of service policy is installed in C, strategy execution unit.
2, method according to claim 1 is characterized in that, after step C, this method further comprises:
The strategy execution unit sends quality of service policy to Resource and Admission Control Sub-system response is installed;
After Resource and Admission Control Sub-system received that described quality of service policy is installed response, the medium gateway function entity in IP Multimedia System sent service quality authorization control response and replys.
3, a kind of communication system is characterized in that, this system comprises:
The public switched telephone network (PSTN) that links to each other with user terminal after being used to receive the service request of user terminal, sends service request to IP Multimedia System;
The MGCF entity is arranged in the IP Multimedia System, is used for sending the service quality authorization request to Resource and Admission Control Sub-system after receiving described service request;
Resource and Admission Control Sub-system comprises the quality of service policy transmitting element, and described quality of service policy transmitting element is used for according to described service quality authorization request, sends the quality of service policy installation unit of quality of service policy to IP bearer network transport layer;
The strategy execution unit of IP bearer network transport layer comprises the quality of service policy installation unit, and described quality of service policy installation unit is used for receiving and installing described quality of service policy.
4, system according to claim 3 is characterized in that, described strategy execution unit further comprises:
Response unit is installed, is used for after the quality of service policy installation unit is installed described quality of service policy, send quality of service policy and response is installed to the message response unit;
Described Resource and Admission Control Sub-system further comprises:
The message response unit is used for according to described quality of service policy response being installed, and sends service quality authorization control response to the MGCF entity and replys.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101270446A CN100542121C (en) | 2006-09-21 | 2006-09-21 | A kind of method and system of communication from public telephone switching network to IP multimedia subsystem |
| PCT/CN2007/002766 WO2008040172A1 (en) | 2006-09-21 | 2007-09-19 | Method and system of public switched telephone network communicating with ip multimedia subsystem |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101270446A CN100542121C (en) | 2006-09-21 | 2006-09-21 | A kind of method and system of communication from public telephone switching network to IP multimedia subsystem |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1968177A CN1968177A (en) | 2007-05-23 |
| CN100542121C true CN100542121C (en) | 2009-09-16 |
Family
ID=38076735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101270446A Expired - Fee Related CN100542121C (en) | 2006-09-21 | 2006-09-21 | A kind of method and system of communication from public telephone switching network to IP multimedia subsystem |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN100542121C (en) |
| WO (1) | WO2008040172A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100542121C (en) * | 2006-09-21 | 2009-09-16 | 华为技术有限公司 | A kind of method and system of communication from public telephone switching network to IP multimedia subsystem |
| CN101330426B (en) * | 2007-10-15 | 2011-05-25 | 中兴通讯股份有限公司 | IPTV network interconnection architecture and interconnection method |
| CN101159599A (en) * | 2007-10-30 | 2008-04-09 | 中兴通讯股份有限公司 | Two-layer equipment strategy controlled method |
| CN103607329B (en) * | 2013-12-04 | 2017-09-26 | 北京中创信测科技股份有限公司 | A kind of IMS network any end-to-end media QoS monitoring methods and system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100370783C (en) * | 2004-12-13 | 2008-02-20 | 华为技术有限公司 | Method for ensuring service quality when heterogeneous network intercommunication |
| CN100542121C (en) * | 2006-09-21 | 2009-09-16 | 华为技术有限公司 | A kind of method and system of communication from public telephone switching network to IP multimedia subsystem |
-
2006
- 2006-09-21 CN CNB2006101270446A patent/CN100542121C/en not_active Expired - Fee Related
-
2007
- 2007-09-19 WO PCT/CN2007/002766 patent/WO2008040172A1/en active Application Filing
Non-Patent Citations (7)
| Title |
|---|
| 3GPP IMS与CS/PSTN互通的实现. 陈金权.西安邮电学院学报，第11卷第1期. 2006 |
| 3GPP IMS与CS/PSTN互通的实现. 陈金权.西安邮电学院学报，第11卷第1期. 2006 * |
| Digitalcellulartelecommunicationssysterm(Phase2+),UniversalMobileTelecommunicationsSystem(UMTS),IPMultimediaSubsystem(IMS), Stage2. ETSI TS 123 228,Vol.v5.15.0 . 2006 |
| Digitalcellulartelecommunicationssysterm(Phase2+),UniversalMobileTelecommunicationsSystem(UMTS),IPMultimediaSubsystem(IMS), Stage2. ETSI TS 123 228,Vol.v5.15.0. 2006 * |
| TelecommunicationsandInternetconverged Services andProtocolsforAdvancedNetworking(TISPAN),NGN Functional Architecture Release1. ETSI ES 282 001,Vol.V1.1.1 . 2005 |
| TelecommunicationsandInternetconverged Services andProtocolsforAdvancedNetworking(TISPAN),NGN Functional Architecture Release1. ETSI ES 282 001,Vol.V1.1.1. 2005 * |
| TelecommunicationsandInternetconverged ServicesandProtocolsforAdvancedNetworking, ResourceandAdmission Control Sub-systerm, Functional Architecture. ETSI ES 282 003,Vol.v1.1.1 . 2006 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1968177A (en) | 2007-05-23 |
| WO2008040172A1 (en) | 2008-04-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1760963B1 (en) | A method and an apparatus for resource admission control | |
| US7649881B2 (en) | Pinning the route of IP bearer flows in a next generation network | |
| US20110299390A1 (en) | Resource and admission control subsystem and method thereof in ngn | |
| US7639612B2 (en) | System and method of providing bandwidth on demand | |
| CN100499459C (en) | Method for implementing information stream transmission in next generation network | |
| US20080069086A1 (en) | Mobile Communication System Based On Ip And Session Initiation Method Thereof | |
| CN102413522A (en) | Method for the transfer of information during handovers in a communication system | |
| CN100542121C (en) | A kind of method and system of communication from public telephone switching network to IP multimedia subsystem | |
| Mingozzi et al. | EuQoS: End-to-end quality of service over heterogeneous networks | |
| CN1756243A (en) | Method for ensuring quality of end-to-end service | |
| CN104468481A (en) | Method and device for realizing media QoS bearing resource control | |
| CN101335703B (en) | End-to-end QoS guaranty method | |
| CN101345703A (en) | Bearing resource reservation method, system and device | |
| CN101146322B (en) | Inter-domain negotiation method for guaranteeing end-to-end service quality | |
| CN101325543B (en) | Method, entity and system for implementing network address conversion | |
| Gallon et al. | Quality of service for next generation voice over IP networks | |
| CN100433907C (en) | Method for interconnection between domains and its communication network | |
| CN101355808B (en) | Method for reporting failure of policy installation | |
| CN101106513B (en) | Domain-across end-to-end path establishment method | |
| CN101309238A (en) | Resource admission control system and method for network of multiple protocol label switch structure | |
| CN101102254A (en) | Establishment method for end-to-end path across domains | |
| CN101159740B (en) | Method and device for implementing proxy demand mode resource preservation in next generation network | |
| Weber et al. | QoS in SIP-based NGN–state of the art and new requirements | |
| Hwang et al. | A framework for IMS interworking networks with quality of service guarantee | |
| Matsumoto et al. | Network middleware design for bridging legacy infrastructures and NGN |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090916 Termination date: 20150921 |
|
| EXPY | Termination of patent right or utility model |