CN207460229U - A kind of multifunctional network system based on IMS - Google Patents

Abstract

The utility model discloses a kind of multifunctional network system based on IMS, which includes：Main IMS core net and standby IMS core net, the two are interconnected and are connected with data communication network, are used to implement IP multimedia service, and main IMS core net real-time transmission data to standby IMS core net is backed up；Access device is connected with data communication network, for accessing user's service request and is sent to data communication network；And data communication network, it is all connected with main IMS core net, standby IMS core net and access device, is used for transmission the business request information of main IMS core net, standby IMS core net and access device.The network system of the utility model realizes multimedia service by active/standby IMS core net, improves the redundancy ability of network system.

Description

A Multifunctional Network System Based on IMS

technical field

The utility model relates to a multifunctional network system, in particular to an IMS-based multifunctional network system.

Background technique

The administrative switching network mainly solves administrative office calls, and provides calling and calling of local calls and long-distance calls. At the same time, it serves as a backup system for the company's dispatching switching network. The main services provided are divided into basic and supplementary services and platform services.

Basic and supplementary services: mainly include voice calls, faxes, caller ID, call forwarding, call barring and other services currently supported by the switching network. Platform business: mainly includes teleconferencing business.

At present, the interactive teleconferencing system used by State Grid Shanghai Electric Power Co., Ltd. is Hangzhou Puxin PX1001 equipment, which has been put into operation since June 2005. The interactive teleconferencing system is connected with the administrative exchange to realize a maximum 60-party teleconferencing capability. Users can dial in to the conference call through private network and public network second-line telephone. The teleconferencing system is also used as an audio auxiliary and backup system for the video conferencing system.

However, because the company's administrative switching network uses circuit switching equipment, its ability to support new services is poor, and there are few types of services. Many electronic services such as one number, video calls, collaborative office, and corporate contacts have no platform to realize.

Utility model content

The utility model provides an IMS-based multi-functional network system, which solves the problems of the poor support ability of the existing administrative switching network for new services and the imperfect disaster recovery system, and realizes multimedia through the main/standby IMS core network. business, improving the disaster recovery capability of the network system.

In order to achieve the above object, the utility model provides a multifunctional network system based on IMS, the network system includes: a main IMS core network and a backup IMS core network, the two are interconnected and are connected to a data communication network for realizing IP multimedia services, and the main IMS core network transmits data to the standby IMS core network for backup in real time; access equipment, which is connected to the data communication network, is used to access user service requests and send them to the data communication network; and the data communication network, It is connected to the main IMS core network, the standby IMS core network and the access device, and is used to transmit the service request messages of the main IMS core network, the backup IMS core network and the access device.

Wherein, the main IMS core network and the standby IMS core network both include: an IP multimedia gateway, which is connected to the access network and the media gateway control function network element, and is used to realize the connection between the access network and the main IMS core network and the standby IMS core network. network interconnection, and send the service request of the access network to the media gateway control function network element; the media gateway control function network element, which is connected with the call session control function network element and the IP multimedia gateway, is used to provide digital trunking, Control the IP multimedia gateway, realize the intercommunication with the access network, and select the call session control function network element; and the call session control function network element, which is connected with the media gateway control network element, and is used to process the call session control network element signaling message. In the disaster recovery state, the active IMS core network is switched to the standby IMS core network.

The data communication network includes: several main PE devices and several backup PE devices connected to each other, which are all connected to the main IMS core network and the backup IMS core network or the access device for processing and forwarding A service message sent by the active IMS core network and the standby IMS core network or the access device. In the disaster recovery state, the primary PE device is switched to the standby PE device.

The main PE equipment and the standby PE equipment are respectively connected to the main IMS core network and the standby IMS core network through the main IMS CE equipment and the standby IMS CE equipment. The primary IMS CE equipment is connected to the standby IMS CE equipment, and is used to realize the connection between the primary IMS core network and the standby IMS core network, and transmit the data of the primary IMS core network to the standby IMS core network in real time.

The call session control function network element includes: an agent call session control function network element, which is connected with the service call session control function network element, and is used to forward the call request of the access network to the service call session control function network element; the service call The session control function network element is connected to both the inquiry call session control function network element and the proxy call session control function network element, and is used for registration authentication and session control of the call request, and sends the session request to the inquiry call session control function a network element; and an interrogation call session control function network element, which is connected to the service call session control function network element, and is used to receive and distribute the session request sent by the service call session control function network element, and query the Call the service call session control function network element. In the disaster recovery state, the proxy call session control function network element, service call session control function network element and inquiry call session control function network element of the active IMS core network are respectively switched to the proxy call session control function network element of the standby IMS core network , a service-call session control function network element and an interrogation-call session control function network element.

When the normal state is restored, switch to the proxy-CSCF network element, the serving-CSCF network element and the interrogating-CSCF network element of the primary IMS core network.

Both the main IMS core network and the standby IMS core network also include: a local user server, which is connected to both the service call session control function network element and the inquiry call session control function network element, and is used to receive and store the The registration authentication message sent by the SCSCF network element described above is used to implement the said querying SCSCF network element to obtain the registration authentication message; the application server, which communicates with the SCSCF network The element connection is used to receive the session request sent by the service call session control function network element and establish a network session; the multimedia resource function controller is connected with the multimedia resource function processor and the service call session control function network element Connected, used to receive the message sent by the service call session control function network element, and control the multimedia resource function processor; and the multimedia resource function processor, connected to the multimedia resource function controller, used to provide multimedia resources The media resource requested and indicated by the feature controller.

The data communication network also includes: a domain name management and number mapping network element, which is connected to the main PE device and several backup PE devices, and is used to receive messages sent by the main PE device and several backup PE devices, and store the The service message sent by the active IMS core network and the standby IMS core network or the access device.

The access network is interconnected with the media gateway control function network elements in the main IMS core network and the backup IMS core network through digital trunking.

The access network includes: soft switching network, electronic switching network and public network.

The access device includes: several terminal devices for calling/called, and a switch for connecting several terminal devices; the switch is connected to the main PE device and the standby PE device for transmission Business request message.

The IMS-based multifunctional network system provided by the utility model solves the problems of poor support ability of the existing administrative switching network for new services and imperfect disaster recovery system, and has the following advantages:

(1) The network system of this utility model is connected to the IMS core network, integrates IT technology, develops multimedia services such as video conferencing, and provides more efficient, convenient and reliable communication methods;

(2) The network system of the present invention transmits data in real time through the hot backup of the main IMS core network and the backup IMS core network, which improves the security of the network and the stability of the business.

Description of drawings

FIG. 1 is a schematic structural diagram of an IMS-based multifunctional network system of the present invention.

FIG. 2 is a schematic diagram of the transmission structure of the IMS-based multifunctional network system of the present invention.

FIG. 3 is a schematic structural diagram of a call session control function network element of the present invention.

FIG. 4 is a schematic structural diagram of the main/standby IMS core network of the present invention.

Detailed ways

The technical solutions of the present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

A kind of multifunctional network system based on IMS, as shown in Figure 1, is the structural representation of the multifunctional network system based on IMS of the present utility model, and this network system comprises: main IMS (IP Multimedia Subsystem, IP Multimedia Subsystem) core Network 1 and standby IMS core network 2, both of which are interconnected and connected to the data communication network 4, are used to realize IP multimedia services, and the main IMS core network 1 transmits data to the standby IMS core network 2 in real time for backup; the access device 3, which is connected to the data communication network 4 for accessing user service requests and sending them to the data communication network 4; and the data communication network 4, which is connected to the main IMS core network 1, the standby IMS core network 2 and the access device 3 The connection is used to transmit service request messages of the active IMS core network 1, the standby IMS core network 2, and the access device 3.

Both the primary IMS core network 1 and the standby IMS core network 2 include: an IP multimedia gateway (IM-MGWIP, MultimediaMedia Gateway) 11, which is connected to the access network 5 and the media gateway control function network element (MGCF, Media Gateway ControlFunction) 12 , used to realize the interconnection between the access network 5 and the main IMS core network 1 and the standby IMS core network 1, and send the service request of the access network 5 to the media gateway control function network element 12; the media gateway control function network element 12 , which is connected to a call session control function network element 13 (CSCF, Call Session Control Function) and an IP multimedia gateway 11, and is used to provide a digital trunk, control the IP multimedia gateway 11, realize intercommunication with the access network 5, and select a call The session control function network element 13; and the call session control function network element 13, which is connected to the media gateway control network element 12, and is used for processing signaling messages during the call session.

In the disaster recovery state, the active IMS core network 1 is switched to the standby IMS core network 2 .

The data communication network 4 includes: several primary PE ((Provider Edge, operator edge)) devices 41 and several backup PE devices 42 connected to each other, all of which are connected to the primary IMS core network 1 and the backup IMS core network 2 or the access device 3 The connection is used to process and forward service messages sent by the active IMS core network 1 and the standby IMS core network 2 or the access device 3 .

In the disaster recovery state, the active PE device 41 switches to the standby PE device 42 .

As shown in Figure 2, it is a schematic diagram of the transmission structure of the IMS-based multifunctional network system of the present invention. A CE (CustomerEdge, user edge) device 6 is connected to a standby IMS CE device 7 .

The active IMS CE equipment 6 is connected to the standby IMS CE equipment 7, which is used to realize the connection between the active IMS core network 1 and the standby IMS core network 2, transmit the data of the active IMS core network 1 to the standby IMS core network 2 in real time, and ensure that the core The master-backup relationship of network equipment remains unchanged, which is conducive to the stability of core network services.

The access device 3 includes: several terminal devices 31 for calling/called, and a switch 32 for connecting several terminal devices 31; the switch 32 is connected to the main PE device 41 and the standby PE device 42 for transmitting service requests information.

As shown in FIG. 3 , it is a schematic structural diagram of the call session control function network element of the present invention. The call session control function network element 13 includes: a proxy call session control function network element (P-CSCF, Proxy CSCF) 131, which is connected with the service The call session control function network element (S-CSCF, Serving CSCF) 132 is connected to forward the call request of the access network 5 to the serving call session control function network element 132; the serving call session control function network element 132 is connected with the inquiry The call session control function network element (I-CSCF, Interrogation CSCF) 133 and the agent call session control function network element 132 are both connected to register and authenticate the call request and control the session, and send the session request to the inquiry call session control function The network element 133; and the inquiry call session control function network element 133, which is connected with the service call session control function network element 132, and is used to receive and distribute the session request sent by the service call session control function network element 132, and query the called location The service call session control function network element 132.

In the disaster recovery state, the proxy call session control function network element 131, the serving call session control function network element 132, and the inquiry call session control function network element 133 of the active IMS core network 1 are respectively switched to the proxy call session of the standby IMS core network 2. The session control function network element 131 , the service call session control function network element 132 and the inquiry call session control function network element 133 . When the normal state is restored, switch to the proxy-CSCF network element 131 , the serving-CSCF network element 132 and the interrogating-CSCF network element 133 of the main IMS core network 1 .

As shown in Figure 4, it is a schematic structural diagram of the main/standby IMS core network of the present invention, the main IMS core network 1 and the standby IMS core network 2 also include: a local subscriber server (HSS, Home Subscriber Server) 14, which is connected to Both the service call session control function network element 132 and the inquiry call session control function network element 133 are connected to receive and store the registration authentication message sent by the service call session control function network element 132, and are used to realize the inquiry call session control function The network element 133 obtains the registration authentication message; the application server (AS, Application Server) 15 is connected to the service call session control function network element 132, and is used to receive the session request sent by the service call session control function network element 132, and establish a network Session: Multimedia Resource Function Controller (MRFC, Multimedia Resource Function Controller) 16, which is connected with Multimedia Resource Function Processor (MRFP, Multimedia Resource Function Processor) 17 and service call session control function network element 132, for receiving service call session The message sent by the control function network element 132 controls the multimedia resource function processor 17; and the multimedia resource function processor 17 is connected with the multimedia resource function controller 16 for providing the multimedia resource function controller 16 requested and indicated media resources.

The data communication network 4 also includes: domain name management and number mapping network element (ENUM/DNS, Telephone NumberMapping working group/Domain Name System) 43, which is connected with the main PE equipment 41 and several standby PE equipment 42, and is used to receive the main PE equipment 41 and several backup PE devices 42 to store the service messages sent by the main IMS core network 1 and the backup IMS core network 2 or the access device 3 .

The access network 5 is interconnected with the media gateway control function network elements 12 in the active IMS core network 1 and the standby IMS core network 2 through digital trunking. The access network 5 includes: a soft switching network, an electronic switching network and a public network.

The operating principle of the IMS-based multifunctional network system of the present utility model is as follows:

The network system of the present invention adopts a hot backup mode, and the main IMS core network 1 sends all information to the standby IMS core network 2 in real time, so that the data of the standby IMS core network 2 and the data of the main IMS core network 1 are synchronized.

When the main IMS core network 1 is in a fault situation, use the fault detection machine to detect the fault, detect the protocol transmission heartbeat and/or link status between network elements to determine the fault, and select the standby IMS core network 2 to send the message; when the fault is eliminated , switch back to the main IMS core network 1.

When the call session control function network element 13 of the active IMS core network 1 is down or the link is interrupted, it is switched to the call session control function network element 13 of the standby IMS core network 2 to send a message.

When the media gateway control function network element 12 of the active IMS core network 1 fails, the network element of the active IMS core network 1 transmits all messages to the media gateway control function network element 12 of the standby IMS core network 2, and the IP address of the active IMS core network 1 The multimedia gateway 11 switches to the media gateway control function network element 12 of the standby IMS core network 2 .

When the fault is eliminated, the backup IMS core network 2 is switched back to the active IMS core network 1 by manually inputting a switchback command.

To sum up, the IMS-based multifunctional network system of the present invention transmits data in real time through the hot backup of the main IMS core network and the standby IMS core network, which improves the security of the network and the stability of the business.

Although the content of the present invention has been described in detail through the above preferred embodiments, it should be recognized that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions of the present utility model will be obvious to those skilled in the art after reading the above content. Therefore, the protection scope of the present utility model should be defined by the appended claims.

Claims (9)

1. A multifunctional network system based on IMS, characterized in that, the network system comprises: The main IMS core network (1) and the standby IMS core network (2), both of which are interconnected and connected to the data communication network (4), are used to realize IP multimedia services, and the main IMS core network (1) transmits data in real time to Prepare the IMS core network (2) for backup; An access device (3), which is connected to the data communication network (4), is used to access user service requests and send them to the data communication network (4); and The data communication network (4), which is connected to the main IMS core network (1), the backup IMS core network (2) and the access device (3), is used to transmit the main IMS core network (1), the backup IMS A service request message from the core network (2) and the access device (3); Both the main IMS core network (1) and the standby IMS core network (2) include: The IP multimedia gateway (11), which is connected to the access network (5) and the media gateway control function network element (12), is used to realize the connection between the access network (5) and the main IMS core network (1) and the backup IMS core network ( 1) interconnection, and send the service request of the access network (5) to the media gateway control function network element (12); The media gateway control function network element (12), which is connected to the call session control function network element (13) and the IP multimedia gateway (11), is used to provide digital trunking, control the IP multimedia gateway (11), and realize the connection with the access network (5) and select the call session control function network element (13); and A call session control function network element (13), connected to the media gateway control network element (12), for processing signaling messages during a call session; In the disaster recovery state, the main IMS core network (1) is switched to the standby IMS core network (2). 2. The IMS-based multifunctional network system according to claim 1, characterized in that the data communication network (4) includes: several main PE devices (41) and several backup PE devices (42) connected to each other , which are connected to the main IMS core network (1) and the standby IMS core network (2) or the access device (3), for processing and forwarding the main IMS core network (1) and A service message sent by the standby IMS core network (2) or the access device (3); In the disaster recovery state, the main PE device (41) is switched to the standby PE device (42). 3. The IMS-based multifunctional network system according to claim 2, characterized in that, the main PE device (41) and the backup PE device (42) are connected to the main IMS core network (1) and the backup PE device The IMS core network (2) is connected through the main IMS CE equipment (6) and the standby IMS CE equipment (7); The primary IMS CE device (6) is connected to the standby IMS CE device (7), for realizing the connection between the primary IMS core network (1) and the standby IMS core network (2), and the primary IMS core network ( The data in 1) is transmitted to the standby IMS core network (2) in real time. 4. The IMS-based multifunctional network system according to claim 3, wherein the call session control function network element (13) comprises: A proxy CSCF network element (131), which is connected to the serving CSCF network element (132), and is used to forward a call request of the access network (5) to the serving CSCF network element (132); The service call session control function network element (132), which is connected to both the inquiry call session control function network element (133) and the proxy call session control function network element (132), is used for registration authentication and session control of call requests, sending the session request to the interrogating call session control function network element (133); and An interrogation call session control function network element (133), which is connected to the service call session control function network element (132), for receiving and distributing the session sent by the service call session control function network element (132) Request, and query the service call session control function network element where the called party is located (132); In the disaster recovery state, the agent call session control function network element (131), the service call session control function network element (132) and the inquiry call session control function network element (133) of the main IMS core network (1) are respectively switched to A proxy call session control function network element (131), a serving call session control function network element (132) and an inquiry call session control function network element (133) of the standby IMS core network (2); When returning to the normal state, switch to the proxy CSCF network element (131), the serving CSCF network element (132) and the inquiry CSCF network element (133) of the primary IMS core network (1). 5. The IMS-based multifunctional network system according to claim 4, characterized in that, the main IMS core network (1) and the standby IMS core network (2) also include: A local user server (14), connected to both the SCSCF network element (132) and the inquiry SCSCF network element (133), for receiving and storing the SCSCF The registration authentication message sent by the network element (132) is used to implement the inquiry call session control function network element (133) to obtain the registration authentication message; An application server (15), connected to the SCSCF network element (132), configured to receive a session request sent by the SCSCF network element (132), and establish a network session; A multimedia resource function controller (16), connected to the multimedia resource function processor (17) and the SCSCF network element (132), for receiving the SCSCF network element (132 ) to control the multimedia resource function processor (17); and A multimedia resource function processor (17), which is connected to the multimedia resource function controller (16), is used to provide media resources requested and indicated by the multimedia resource function controller (16). 6. The IMS-based multifunctional network system according to claim 2, characterized in that, the data communication network (4) further includes: a domain name management and number mapping network element (43), which is connected to the main The PE device (41) is connected to several backup PE devices (42), used to receive messages sent by the main PE device (41) and several backup PE devices (42), and store the main IMS core network (1) and backup IMS A service message sent by the core network (2) or the access device (3). 7. The IMS-based multifunctional network system according to any one of claims 1-6, characterized in that, the access network (5) communicates with the main IMS core network ( 1) Interconnect with the media gateway control function network element (12) in the standby IMS core network (2). 8. The IMS-based multifunctional network system according to claim 7, wherein the access network (5) includes: a softswitch network, an electronic switch network and a public network. 9. The IMS-based multifunctional network system according to any one of claims 2-6, characterized in that the access device (3) includes: several terminal devices for calling/called ( 31), and a switch (32) for connecting several terminal devices (31); The switch (32) is connected to the main PE equipment (41) and the standby PE equipment (42), and is used for transmitting service request messages.