CN100452786C - Large compositive gateway access system based on NGN - Google Patents
Large compositive gateway access system based on NGN Download PDFInfo
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Abstract
The invention relates to a large integrated access network gate based on NGN. Wherein, said invention comprises soft exchanger (0), control subsystem (1), call subsystem (2), user terminal (3), ascending IP support network (4.1), and descending IP support network (4.2); the ascending of control system (1) via IP support network (4.1) is connected to soft exchanger (0) via H.323, MGCP, H.248, or SIP; the descending of control subsystem (1) via descending IP support network (4.2) uses self-defined control manage protocol to communicate with call subsystem (2); the call subsystem (2) via twisted line accesses into user terminal. With said invention, when upgrading and abundant backup, system only needs to operate control subsystem, with low cost and simple management.
Description
Technical field
The present invention relates to a kind of gateway access system, relate in particular to a kind of large-scale synthesis gateway access system based on NGN.
Background technology
The synthesization that inserts is the inevitable requirement of networking economy, customer service diversified demand and network evolution syncretization.Along with the type of business is more and more, if different business is adopted the access means of separating, obviously be uneconomical, irrational, the integration requirement that also is difficult to satisfy fast multiple business such as user session sound, data, video.Generally speaking, comprehensively have access to following benefit: reducing the networking cost, reduce operation expense, optimize and the simplification network configuration, provide professional fast and the access service of " one-stop " full-service can be provided to the user, is the important component part of NGN.
(Next Generation Network, next generation network are to call out the control core, provide the network of real-time voice and multimedia service, i.e. flexible exchanging network on the net in packet switching with the soft switch to sense stricto NGN exactly.) integrated access equipment in the flexible exchanging network can distinguish according to its applied environment and the different of capacity, one class is jumbo comprehensive access gate (the Access Gateway that is positioned at local side, be called for short AG), can provide POTS (Plain Old Telephone Service to the user or the local network of users, Plain Ordinary Telephone Service), ISDN (Integrated Services Digital Network, the integrated digital service network), V5, DSL (Digital Subscriber Loop, Digital Subscriber Loop), LAN (Local area Network, local area network (LAN)), DDN (Digital Data Network, Digital Data Net), FR all kinds of service access interfaces such as (FrameRelay frame relays); Another kind of is the integrated access equipment (Integrated Access Device is called for short IAD) that is positioned at the low capacity of user resident, mainly is to provide POTS and Ethernet service access interface to the user.Be the business control that AG or IAD need to accept soft switch,, support MGCP/H.248, SIP, H.323 wait control protocol so must have the function of service control layer.
Existing AG can realize the conversion of signals such as user side voice and fax to the packet network medium, comprises two parts of access control and Business Processing.Access control partly is the core of whole AG, finishes following function: QoS (quality of service, the network service quality) management function of resource control and report function, maintenance and management function, ip voice etc.Business Processing is partly finished following function: speech processes and call treatment etc.In flexible exchanging network, Softswitch is managed all AG of this network segment.Along with the access terminal increase of number of soft switch, the AG number of parallel processing is also increasing, but the access control among each AG only be this device service, is to waste to hardware.Brought the limitation of many management in addition: must carry out the separate unit upgrading to AG all under this Softswitch simultaneously during to device upgrade, waste lot of manpower and material resources resource; Be difficult for accomplishing many AG redundancy backups; Softswitch will be managed for configuration many AG; Control does not really separate with voice; Break down and to locate etc.In a word, along with the increase of the number that accesses terminal, existing AG is difficult to support the carrier-class large-scale application.
Summary of the invention
Purpose of the present invention just is to overcome the shortcoming and defect that above-mentioned prior art exists, and provides a kind of cost low, the capacious large-scale synthesis gateway access system based on NGN that is applicable to the carrier class large-scale application.
The object of the present invention is achieved like this:
One, based on the large-scale synthesis gateway access system of NGN
The present invention is positioned at the flexible exchanging network Access Layer, adopts network topology structure as shown in Figure 1.
Specifically, as Fig. 2, the present invention includes Softswitch 0, control subsystem 1, call out subsystem 2, user terminal 3, ascending IP load-bearing net 4.1 and downstream IP bearer network 4.2;
Control subsystem 1 is by master control module 1.1 and be equipped with control module 1.2 and form, and its carrier can be industrial computer, ordinary PC or other;
Calling out subsystem 2 is made up of the access device module 2.1 of an above status equalization;
Control subsystem 1 up by ascending IP load-bearing net 4.1 adopt H.323, MGCP (Media GatewayControl Protocol, MGCP), H.248 or SIP (Session InitiationProtocol, Session Initiation Protocol) be connected communication with Softswitch 0;
Control subsystem 1 is descending by self-defined control and management agreement of downstream IP bearer network 4.2 employings and calling subsystem 2 mutual signalings, calls out subsystem 2 by twisted-pair feeder access user terminal 3.
Two, based on the large-scale synthesis gateway access system communication process of NGN
This communication process is to call out control commands all in the subsystem 2 all to send control subsystem 1 and Softswitch 0 mutual all control commands by control subsystem 1.
Control subsystem 1 and calling subsystem 2 communicate by self-defined control transmission agreement, and the protocol Data Unit PDU of this agreement (Protocol Data Unit) is made up of two parts: PDU head and PDU body; The PDU head has comprised agreement sign, version, length, sequence number, coding, cipher mode, and to forming, the administration order type of support has reporting events Notify and incident change Indicate to the PDU body by name value;
Notify: call out subsystem 2 generation incident in control subsystem 1 reporting call subsystem 2;
Indicate: control subsystem 1 is revised characteristic, incident and the signal of calling out each professional dish in the subsystem 2.
Can be achieved as follows the call business demand in the present invention:
1. local user interface module 2.1.3 calls out local analog trunk module 2.1.2;
2. local user interface module 2.1.3 calls out local user interface module 2.1.3;
3. local user interface module 2.1.3 calls out local IP;
4. this locality or far-end analog trunk module 2.1.2 call out local IP;
5. this locality or far-end analog trunk module 2.1.2 call out local user interface module 2.1.3;
6. remote subscriber interface module 2.1.3 calls out local user interface module 2.1.3;
7. remote subscriber interface module 2.1.3 calls out local analog trunk module 2.1.2.
In all call business, local user interface module 2.1.3 calls out local analog trunk module 2.1.2, this locality or far-end analog trunk module 2.1.2 and calls out local user interface module and remain and rely on the PSTN net to realize fully, do not realize that through soft switch other service call is all realized by soft exchanging network.
The explanation of the call flow of whole gateway access system has the arrow line of literal to represent that transmit leg sends signaling to the recipient as shown in Figure 3, and letterless arrow line represents that the recipient receives that returning one to transmit leg after the signaling receives signaling.MGC (Media Gateway Controller, Media Gateway Controller) represents Softswitch 0.We suppose in this calls out:
1, gateway access system is successfully registered to Softswitch 0;
2, user 1 is in 1 side of control subsystem, and user 2 is in 2 sides of control subsystem.
Wherein, control subsystem 1 and control subsystem 2 can be same control subsystem, and calling out subsystem 1 and call out subsystem 2 can be same calling subsystem.
This communication process is described as follows:
Be followed successively by A, B, C, D ... X, Y;
A-user's 1 off-hook;
B-calls out subsystem 1 and detects calling subscriber's off-hook, reports control subsystem 1;
C-control subsystem 1 reports off-hook event to MGC;
D-MGC issues directory and dialing tone incident for control subsystem 1;
E-control subsystem 1 issues the dialing tone order for calling subsystem 1;
F-calls out subsystem 1 and puts dialing tone for user 1;
G-user's 1 dialing;
H-calls out subsystem 1 and reports called number to control subsystem 1;
I-control subsystem 1 is checked the numbers conform dial plan of receiving, reports called number to MGC;
J-MGC to 2 called numbers of control subsystem by called terminal ringing;
K-MGC is to 1 ring-back tone incident of control subsystem;
L-control subsystem 2 is to calling out 2 ring incidents of subsystem, allows user's 2 rings;
M-control subsystem 1 is to calling out 1 message of subsystem, allows 1 tin of ring-back tone of user;
N-calls out subsystem 2 and puts ring back tone for user 2;
O-calls out subsystem 1 and puts ring-back tone for user 1;
P-user's 2 off-hooks;
Q-calls out subsystem 2 to control subsystem report of user 2 off-hooks;
R-control subsystem 2 is to MGC report of user 2 off-hooks;
S-MGC allows user 2 park ring back tone to 2 message of control subsystem;
T-MGC parks all sound incidents to 1 of control subsystem;
U-control subsystem 2 allows calling subsystem 2 park ring;
V-control subsystem 1 allows calling subsystem 1 park all sounds;
W-calls out subsystem 2 and stops user's 2 end ring back tones;
X-calling subsystem 1 stops user's 1 end and stops all sounds;
Y-user 1 and user's 2 conversations.
The present invention and the existing large-scale connecting system of setting up are compared, and have the following advantages and good effect:
1. in existing medium-sized access device AG, a system control module is all arranged on every AG, can only can not share for the use of this equipment at the system control module of each AG of setting up large-scale connecting system, cause the very big wasting of resources, bring managerial a lot of problem simultaneously.After adopting the present invention, call out subsystem 2 all access device modules 2.1 and all use same control subsystem 1, only use 2 control modules just can realize the function of existing system control module, when setting up large-scale connecting system network, can save great amount of hardware resources, reduce system cost.
2. in the existing large-scale connecting system of setting up, many AG of Softswitch 0 control are managed for configuration many AG, need when edition upgrading and redundancy backup all AG are operated, and breaking down is difficult for the location; And 0 of the Softswitch among the present invention needs control subsystem 1 of management, to wherein master control module 1.1 be equipped with control module 1.2 backup of upgrading, only needs the flow process of positioning control subsystem 1 to get final product when breaking down.
3. in the existing large-scale connecting system of setting up, signaling flow and voice flow send by AG, do not accomplish real control and speech Separation; And Softswitch 0 among the present invention and the signaling between the control subsystem 1 are undertaken alternately by control channel, and the voice flow of access device terminal transmits by data channel, have really realized separating of control and voice.
In a word, behind employing the present invention, only need operate control subsystem 1 when system upgrades with redundancy backup, realize simple; All control commands are all transmitted by control subsystem 1, and all message of access device all report to control subsystem 1, easily the positioning equipment fault; Because low, the flexible configuration of cost, convenient management, the multi-service access layer equipment system that can be used as the next generation network soft switch uses.
Description of drawings
Fig. 1-network topology structure figure of the present invention;
Fig. 2-overall structure block diagram of the present invention;
Fig. 3-workflow diagram of the present invention;
Fig. 4-master control modular structure block diagram;
Fig. 5-access device modular structure block diagram.
Wherein:
The 0-Softswitch.
The 1-control subsystem,
1.1-the master control module,
1.1.1-kernel control module,
1.1.2-the integrated circuit board adaptation module,
1.1.3-protocol module,
1.1.4-the webmaster module,
1.1.5-network access module;
1.2-be equipped with control module.
2-calls out subsystem,
2.1-the access device module,
2.1.1-the voice management module,
2.1.2-analog trunk module,
2.1.3-Subscriber Interface Module SIM.
The 3-user terminal,
3.1-telephone set, the 3.2-facsimile machine.
4.1-the ascending IP load-bearing net, 4.1-downstream IP bearer network.
The 5-local switch.The 6-PSTN net.
Embodiment
Describe in detail below in conjunction with drawings and Examples:
One, control subsystem 1
(1) control subsystem 1 major function
1, responds the order that Softswitch 0 issues, and instruct to calling out 2 control corresponding of subsystem according to Softswitch 0 order;
2, the access request event of subsystem 2 is called out in response, and in time reports Softswitch 0.
(2) master control module 1.1
As Fig. 4, master control module 1.1 comprises kernel control module 1.1.1, integrated circuit board adaptation module 1.1.2, and protocol adaptation module 1.1.3, webmaster module 1.1.4, network access module 1.1.5 is divided into upper strata, middle level and bottom
1, the upper strata is kernel control module 1.1.1, all business module in the administer calls subsystem 2, and the control command of calling out in the subsystem 2 is sent by kernel control module 1.1.1.
2, the middle level comprises integrated circuit board adaptation module 1.1.2, protocol adaptation module 1.1.3 and webmaster module 1.1.4;
1) integrated circuit board adaptation module 1.1.2 handles the interrupt requests of calling out business module in the subsystem 2, reports to kernel control module 1.1.1 and calls out each physical terminal state in the subsystem 2, transmits kernel control module 1.1.1 simultaneously to calling out the control command of subsystem 2;
2) protocol module 1.1.3 finishes and the communicating by letter of Softswitch 0, report control request and mutual each terminal information (as the state of physical terminal, the information of media termination) of kernel control module 1.1.1 of 0 pair of each terminal of Softswitch to kernel control module 1.1.1;
3) webmaster module 1.1.4 only and kernel control module 1.1.1 to be configured parameter mutual, parameter comprises the statistical information and the state of each layer;
3, bottom is network access module 1.1.5,0 communication interface that control subsystem 1 is provided and calls out subsystem 2, Softswitch; Kernel control module 1.1.1 collects after the professional dish incident incident notification protocol module 1.1.3 selectively by network access module 1.1.5.
(3) master control module 1.1 major functions
By Subscriber Interface Module SIM 2.1.3 in Ethernet interface receipt of call subsystem 2 each access device module 2.1 or the call request of analog trunk module 2.1.2, and request message is formed soft switch instruction report Softswitch 0.
1, receives the protocol signaling that Softswitch 0 sends, convert self-defined control transmission protocol instructions earlier to and be transmitted to business module and the voice management module 2.1.1 that calls out corresponding access device module 2.1 in the subsystem 2 then;
2, be responsible for fault, performance, the configuration management of whole access device module 2.1, comprise convergence, the letter flow management of service traffics and the local network management interface is provided.
(4) be equipped with control module 1.2 major functions
Master control module 1.1 is equipped with the redundancy backup use of control module 1.2 as master control module 1.1 with control module 1.2 structures are identical fully in the control subsystem 1, only just starts control module 1.2 fully when master control module 1.1 breaks down.
Two, call out subsystem 2
(1) calls out subsystem 2 major functions
1, receives user terminal 3 call requests, and control subsystem 1 is informed in request;
2, response control subsystem 1 transmitting order to lower levels;
3, to the audio or video signal decompression;
4, on voice management module 2.1.1, carry out the conversion of IP packets of information and voice signal.
(2) the access device module 2.1
As Fig. 5, access device module 2.1 comprises voice management module 2.1.1, analog trunk module 2.1.2 and Subscriber Interface Module SIM 2.1.3; Wherein analog trunk module 2.1.2 and Subscriber Interface Module SIM 2.1.3 number are one or more, and voice management module 2.1.1 number is 1;
All voice management module 2.1.1, analog trunk module 2.1.2 and Subscriber Interface Module SIM 2.1.3 all are connected to control subsystem 1 via downstream IP bearer network 4.2, Subscriber Interface Module SIM 2.1.3 connects user terminal 3 (telephone set 3.1 or facsimile machine 3.2) by twisted-pair feeder, and analog trunk module 2.1.2 is connected to pstn telephone net 6 by local switch 5.
1, voice management module 2.1.1 major function
Explain the signaling that master control module 1.1 issues, set up voice management module 2.1.1 and Subscriber Interface Module SIM 2.1.3 or analog trunk module 2.1.2 time slot line passing according to signaling request.
1) to audio signal compression and decompression;
2) with TDM (Time Division Multiplexing, time-division multiplex) voice signal converts RTP (Real-time Transport Protocol to, RTP) wrap on the Ethernet and transmit, or converting the RTP bag to the TDM voice signal sends Subscriber Interface Module SIM 2.1.3 or analog trunk module 2.1.2 to by the time slot line passing.
2, analog trunk module 2.1.2 major function
Provide the PSTN net 5 connecting interfaces.
1) is used for the generation that ringing-current detects, simulates off-hook and signal tone;
2) by Ethernet interface control subsystem 1 is issued in the off-hook request, returned signaling according to control subsystem 1 and produce corresponding signal tone.
3, Subscriber Interface Module SIM 2.1.3 major function
1) call request that provides interface to receive user terminal 3, PCM (Pulse Code Modulation, the pulse-code modulation) signal with demand signalling after analog-to-digital conversion sends to master control module 1.1 by the network agent on the voice management module 2.1.1;
2) signaling and the voice management module 2.1.1 that returns according to master control module 1.1 sets up the time slot line passing;
3) foundation and the dismounting of enforcement user terminal 3;
Corresponding analog trunk module 2.1.2, Subscriber Interface Module SIM 2.1.3, voice management module 2.1.1 just set up time slot line passing transfers voice information stream when having only 1 bind command of control subsystem between each access device.
Claims (4)
1, a kind of large-scale synthesis gateway access system based on NGN comprises Softswitch (0), user terminal (3), ascending IP load-bearing net (4.1) and downstream IP bearer network (4.2); It is characterized in that: also comprise control subsystem (1), call out subsystem (2);
Control subsystem (1) is by master control module (1.1) and be equipped with control module (1.2) and form;
Calling out subsystem (2) is made up of the access device module (2.1) of an above status equalization;
Control subsystem (1) up by ascending IP load-bearing net (4.1) adopt H.323, MGCP, H.248 or SIP be connected communication with Softswitch (0);
Control subsystem (1) is descending to be adopted self-defined control and management agreement and calls out the mutual signaling of subsystem (2) by downstream IP bearer network (4.2), calls out subsystem 2 by twisted-pair feeder access user terminal (3).
2, by the described large-scale synthesis gateway access system of claim 1, it is characterized in that based on NGN:
Master control module (1.1) and control module (1.2) structure is identical fully in the control subsystem (1), be equipped with the redundancy backup use of control module (1.2), only just start control module (1.2) fully when breaking down in master control module (1.1) as master control module (1.1).
3, by the described large-scale synthesis gateway access system of claim 1, it is characterized in that based on NGN:
Master control module (1.1) comprises three layer function modules:
The upper strata is kernel control module (1.1.1), all business modules in the administer calls subsystem (2), and the control command of calling out in the subsystem (2) is sent by kernel control module (1.1.1);
The middle level comprises integrated circuit board adaptation module (1.1.2), protocol module (1.1.3) and webmaster module (1.1.4);
Integrated circuit board adaptation module (1.1.2) is handled the interrupt requests of calling out business module in the subsystem (2), report each physical terminal state in the calling subsystem (2) to kernel control module (1.1.1), transmit kernel control module (1.1.1) simultaneously calling out the control command of subsystem (2);
Protocol module (1.1.3) is finished and the communicating by letter of Softswitch, and reports the control request of Softswitch to each terminal to kernel control module (1.1.1), and kernel control module (1.1.1) each terminal information alternately;
Webmaster module (1.1.4) only and kernel control module to be configured parameter mutual, parameter comprises the statistical information and the state of each layer;
Bottom is network access module (1.1.5), control subsystem (1) is provided and calls out communication interface between subsystem (2), the Softswitch (0); Kernel control module (1.1.1) collects after the professional dish incident the selectable notification protocol module of incident (1.1.3) by network access module (1.1.5).
4, by the described large-scale synthesis gateway access system of claim 1, it is characterized in that based on NGN:
Each access device module (2.1) is made up of 1 voice management module (2.1.1), one or more analog trunk modules (2.1.2), one or more Subscriber Interface Module SIMs (2.1.3);
Voice management module (2.1.1) adopts self-defined control transmission agreement link to each other with control subsystem (1) via downstream IP bearer network (4.2), Subscriber Interface Module SIM (2.1.3) connects user terminal (3) by twisted-pair feeder, and analog trunk module (2.1.2) is connected to PSTN net (6) by local switch (5).
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| CN103391281B (en) * | 2013-06-25 | 2016-04-20 | 福建星网锐捷通讯股份有限公司 | The three-in-one fusion method of agreement is realized based on integrated access equipment IAD |
| CN109150768B (en) * | 2018-09-21 | 2020-07-28 | 上海沪光通讯设备有限公司 | Multimedia scheduling system |
| CN113301006A (en) * | 2020-11-11 | 2021-08-24 | 众源科技(广东)股份有限公司 | Converged communication gateway |
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| US6614781B1 (en) * | 1998-11-20 | 2003-09-02 | Level 3 Communications, Inc. | Voice over data telecommunications network architecture |
| CN1501650A (en) * | 2002-11-14 | 2004-06-02 | 华为技术有限公司 | A call flow setting up method |
| US20040240430A1 (en) * | 2003-05-27 | 2004-12-02 | Innomedia Pte Ltd. | IP gateway for hybrid circuit switched and IP based mobile wireless telephone system |
| CN1798137A (en) * | 2004-12-21 | 2006-07-05 | 上海贝尔阿尔卡特股份有限公司 | Method for controlling soft exchange call, and soft exchange equipment |
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2006
- 2006-10-16 CN CNB2006101247810A patent/CN100452786C/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6614781B1 (en) * | 1998-11-20 | 2003-09-02 | Level 3 Communications, Inc. | Voice over data telecommunications network architecture |
| CN1501650A (en) * | 2002-11-14 | 2004-06-02 | 华为技术有限公司 | A call flow setting up method |
| US20040240430A1 (en) * | 2003-05-27 | 2004-12-02 | Innomedia Pte Ltd. | IP gateway for hybrid circuit switched and IP based mobile wireless telephone system |
| CN1798137A (en) * | 2004-12-21 | 2006-07-05 | 上海贝尔阿尔卡特股份有限公司 | Method for controlling soft exchange call, and soft exchange equipment |
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