CN100459542C - Method for realizing internet access in next generation network environment - Google Patents
Method for realizing internet access in next generation network environment Download PDFInfo
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- CN100459542C CN100459542C CNB2005100514129A CN200510051412A CN100459542C CN 100459542 C CN100459542 C CN 100459542C CN B2005100514129 A CNB2005100514129 A CN B2005100514129A CN 200510051412 A CN200510051412 A CN 200510051412A CN 100459542 C CN100459542 C CN 100459542C
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Abstract
The present invention refers to accessing network method in next generation network environment. Said next generation network includes user side media gateway, soft switchboard, accessing side media gateway, and accessing server, said method including configuring number identification strategy in said soft switchboard, when said soft switchboard received said user dialing number, according to said number identification strategy distinguishing said user request being accessing network service or other service, when said user request being accessing network service, directly establishing data channel to said user, said user through said data channel establishing accessing network connection with said accessing server. The present invention can simplify subscriber dialing accessing network process, shorten turn-on time, save soft switchboard and network resources.
Description
Technical field
The present invention relates to network communications technology field, be specifically related to realize in a kind of next generation network environment the method for network connection.
Background technology
Human communication comprises the multimedia three big contents of speech, data, video and audio frequency combination.All the time, above-mentioned three class communication services all are to be carried and dredged by different communication networks respectively.Telephone network carrying and mediation speech business, data network carrying and mediation data service, multimedia network carrying and mediation multimedia service.
Further intensification along with the social informatization degree, communication has become indispensable instrument in people's live and work, people also no longer only are that basic voice communication service and simple WWW browses and receive and dispatch E-mail (Email) to communicating requirement, and what people needed is to obtain needed information at any time, everywhere, neatly.Based on this demand, be necessary to develop new network configuration and reflect this new network environment, this network configuration is exactly the basic framework of NGN (next generation network).
For voice, data and multimedia service are provided on the NGN network simultaneously, i.e. the fusion of communication service has produced Softswitch technology.Softswitch technology has adopted the advanced architectures of telephone exchange, and adopts the IP in the IP network to wrap multiple information such as voice-over, data and media stream.
Softswitch technology independently becomes a physical entity with the service access module of telephone exchange, be called MGW (media gateway), the MGW function be adopt various means with various users and service access in flexible exchanging network, MGW finishes the conversion of data format and agreement, all media information currents that insert all is converted to adopts the packet of IP agreement to transmit in flexible exchanging network.
Softswitch technology independently becomes a physical entity with the Switching Module of telephone exchange, is called SoftSwitch, and the major function of SoftSwitch is to finish control of communication between control of the business of all media gateway in the edge access layer and the media gateway.
In existing NGN network environment, traditional access way is by means of MODEM (modulator-demodulator), by dialing the online number, at first sets up voice channel with access server, and then switches to data channel, realizes user's online.
The flow process that the user realizes online by MODEM is usually as shown in Figure 1:
At first, subscriber phone is dialed the online number by MODEM; SoftSwitch sends the request of setting up voice channel with it to access server after receiving this number; The MODEM of access server by SoftSwitch to user's loopback MODEM sound; User MODEM reports the MODEM incident to SoftSwitch after receiving the MODEM sound, i.e. in the soft switch standard control protocol, the MODEM sound reports; After SoftSwitch was received the MODEM incident, notice MGW switched to the voice channel of setting up on the data channel.Like this, network terminal user just can visit Internet (internet) Internet resources as server on the visit local network, thereby has realized the function of user's online.
By flow process shown in Figure 1 as seen, in the prior art scheme, user's flow process of surfing the Net is too complicated, and the user at first needs to set up voice channel with the MODEM of access server, enters the process of voice call, set up unsuccessful, then failure; After setting up successfully, also to report the MODEM incident to give SoftSwitch, after SoftSwitch detects the MODEM incident by MGW, MGW and access server to both sides sends signaling again, make it that voice channel is switched to data channel, after the success, the user just can visit Internet.In this process, the overlong time that the user waits for, about 30S, and when switching to data channel, instability, easy broken string influence the efficient of user's use and the user good opinion to the MODEM use; And, can take the ample resources of SoftSwitch and NGN network because flow process is too complicated.
Summary of the invention
The purpose of this invention is to provide the method that realizes network connection in a kind of NGN environment,, simplify the online flow process, speed up Web searches to overcome the shortcoming of online flow process complexity in the prior art.
For this reason, the invention provides following technical scheme:
Realize the method for network connection in a kind of next generation network environment, described next generation network comprises: user side media gateway, SoftSwitch, access side media gateway, access server, and described method comprises:
A, in described SoftSwitch the configuration number recognition strategy;
B, after described SoftSwitch is received the number that the user dials, what distinguish that described user asks to set up according to described number recognition strategy is business of networking or other business;
C, when the business of asking to set up as described user is business of networking, notify described access side media gateway and described user side media gateway directly to set up data channel for described user;
D, described user set up online by described data channel and described access server and are connected.
Alternatively, described steps A is specially:
When described SoftSwitch data configuration, distinguish network connection sign indicating number and common number.
Described step B is specially:
When the number of dialing as described user was described network connection sign indicating number, the business that described user asks to set up was a business of networking.
Alternatively, described steps A is specially:
Common number of configuration and special access code mapping table in described SoftSwitch.
Described step B is specially:
Described common number of number searching and the special access code mapping table dialed according to described user;
When the corresponding special access code of the number of dialing with described user, the business that described user asks to set up is a business of networking.
Notify described access side media gateway and described user side media gateway directly specifically to comprise described in the described step C for described user sets up data channel:
According to the number that described user dials, notify described access side media gateway to set up data channel for this user;
After the response signal of receiving described access side media gateway, notifying described client's side media gateway is that described user sets up data channel.
Described method also comprises:
The business of asking to set up as described user be described other when professional, for this user sets up voice channel.
Alternatively, the bearing medium of described data channel is: ordinary telephone line, perhaps integrated services digital network, perhaps ADSL (Asymmetric Digital Subscriber Line).
By above technical scheme provided by the invention as can be seen, the present invention adopts the mode of configuration number recognition strategy in SoftSwitch, promptly directly when the SoftSwitch configuration data, directly distinguish network connection sign indicating number and other numbers, perhaps set up common number and special access code mapping table, thereby the number of dialing according to the user distinguishes user's request is business of networking or other business.For business of networking, then do not set up the normal speech passage, but directly set up data channel for other business; For other business, then still adopt existing other professional handling processes.Thereby simplified the online flow process greatly, shortened turn-on time; Improve the success rate that dials up on the telephone simultaneously, saved SoftSwitch and Internet resources; Nor influence the realization of other business.
Description of drawings
Fig. 1 is the flow chart that the user realizes online in the NGN network by MODEM;
Fig. 2 is a subscriber dialing online environment schematic diagram in the NGN network;
Fig. 3 is the realization flow figure of the inventive method;
Fig. 4 has subscriber dialing online flow process in the MGCP agreement now;
Fig. 5 is the present invention's subscriber dialing online flow process in the MGCP agreement.
Embodiment
Core of the present invention is configuration number recognition strategy in SoftSwitch, and when the user asked to insert, what the number that SoftSwitch is dialed according to this strategy and user was distinguished user's request was business of networking or other business.If business of networking is not then set up the normal speech passage, but directly set up data channel; If other business then still adopt existing other professional handling processes.The number recognition strategy can be by directly distinguishing the network connection sign indicating number and other numbers are realized when the SoftSwitch data configuration, also can be by in SoftSwitch, disposing common number and special access code mapping table, and the mode by FH-number transform realizes.
In order to make those skilled in the art person understand the present invention program better, the present invention is described in further detail below in conjunction with drawings and embodiments.
Subscriber dialing online environment schematic diagram in the reference NGN network shown in Figure 2:
In the NGN network, Softswitch technology independently becomes a physical entity with the Switching Module of telephone exchange, be SoftSwitch, the major function of SoftSwitch is to finish control of communication between control of the business of all media gateway in the edge access layer and the media gateway, and concrete function comprises:
(1), determines user's professional rights of using, to determine whether to accept the Client-initiated service request according to the user property of registering in the service application layer associated server.
(2) resource of the various media gateway of edge access layer is controlled, control the use of each media gateway resource, and grasp the occupation condition of each media gateway, to determine whether that enough network service resources are to satisfy the business need that the user is applied for.
(3) finish the routing function of calling, initiate the relevant information of service request according to the user, determine the relation that to establish a communications link between which media gateway, and notify the relation of establishing a communications link between these media gateway and communicate, and the information Compression mode that in communication process, is adopted, whether enable function such as echo inhibition.
(4) communication connection status between the media gateway is monitored and control, after customer service is used to complete, disconnect the relation that communicates to connect between the indication corresponding media gateway.
(5) charge.Because just professional the continuing of control of SoftSwitch, and the data flow between the user is without SoftSwitch, so SoftSwitch can only realize chargeing by connecting time, and can't realize chargeing by amount of information.If require SoftSwitch to possess the function of chargeing, then require media gateway to possess the function of adding up, and can send statistics to SoftSwitch at every user's the professional amount of information of each use by amount of information.
(6) keep message such as mutual route with the pass of H.323 netting, to realize soft exchanging network and the H.323IP intercommunication of telephone network.
(7) can directly connect H.323 and SIP (initial session protocol) terminal, realize multimedia service, can also and intelligent server, realize IN service, as various calling card services.
During subscriber dialing, will become digital signal to send to user side MGW according to the analog signal conversion of telephone line transmission by MODEM, user side MGW be converted to these digital signals and adopts the packet of IP (Internet Protocol) agreement to send to SoftSwitch;
SoftSwitch is determined user's professional rights of using according to the user property of registering in the service application layer associated server, to determine whether to accept the Client-initiated service request; When allowing the user to insert, the media gateway according to the definite relation that establishes a communications link with it of the number that the user dialed promptly inserts the side media gateway, and notice inserts the relation of establishing a communications link between side media gateway and the client's side media gateway;
Like this, the user can land access server by the communication port of setting up between these media gateway.
The user can surf the Net by ordinary telephone line, also can pass through ISDN (integrated services digital network) or ADSL (ADSL (Asymmetric Digital Subscriber Line)).
In order to simplify user's flow process of surfing the Net, the present invention will surf the Net number as special access code, and be about to surf the Net number and other numbers are distinguished, the online number is not set up the normal speech passage, but directly set up data channel for it, thus simplify the online flow process, shorten turn-on time.
With reference to Fig. 3, Fig. 3 is the realization flow figure of the inventive method, may further comprise the steps:
Step 301: configuration number recognition strategy in SoftSwitch.
In the NGN network, finish control of communication between control of the business of all media gateway in the edge access layer and the media gateway by SoftSwitch, therefore, can when the SoftSwitch data configuration, distinguish network connection sign indicating number and common number.Because the subscriber dialing online, the number of being dialed also is a string number, if discord plain old telephone number is distinguished, then SoftSwitch all will be thought the plain old telephone number, thereby sets up voice channel for it.Network connection sign indicating number and common number are made a distinction, when SoftSwitch is received the number that one group of user dials, can recognize the type of service of user's request, thereby business of networking is set up different operation flows with other business according to configuration in advance.
Also can in SoftSwitch, dispose common number and special access code mapping table.Like this, though the number that the user dials is common number, SoftSwitch by search common number and special access code mapping table as can be known this number be business of networking, thereby business of networking is set up different operation flows with other business.
In a word, no matter how, as long as can make SoftSwitch recognize the type of service that the user asks, can reach the purpose of described configuration number recognition strategy according to user's dialing.
Step 302: subscriber dialing, request online.
Step 303: SoftSwitch is received the number that the user dials.
Step 304: judge whether to be business of networking according to the number recognition strategy.
If when the SoftSwitch data configuration, distinguished network connection sign indicating number and common number, after then SoftSwitch is received the number that the user dials, checked whether be the network connection sign indicating number of configuration according to this configuration, if illustrate that then the business that the user asks to set up is a business of networking.
If what dispose in SoftSwitch is common number and special access code mapping table.Then after SoftSwitch is received the number that the user dials, search this common number and special access code mapping table,, show that then the business that the user asks to set up is a business of networking if when the corresponding special access code of the number dialed with the user is arranged in this table.
If the business that the user asks to set up is a business of networking, then enter step 305: directly for this user sets up data channel, promptly user and access server carry out the required passage of data interaction.At first the number of dialing according to the user notifies access side media gateway to set up data channel for this user, and after receiving the response signal that inserts the side media gateway, notifying client's side media gateway is that described user sets up data channel.
Then, enter step 306: the user sets up online by the data channel of setting up with access server and is connected.
If user's request is not business of networking, then enter step 307: handle according to the regular traffic handling process.
Such as, when the business of asking to set up as the user is the mandarin sound business, for this user sets up voice channel.After setting up voice channel, be the mandarin sound business because MGC (Media Gateway Controller) detects this business, so the user enters communication process.Even MGW (media gateway) has reported the MODEM single-tone, MGC can not switch to data channel by transmitting order to lower levels yet, does not influence conversation.
The soft switch control protocol mainly contains two kinds at present: MGCP (MGCP) agreement that H.248 protocol family standard that ITU-T (International Telecommunications Union) formulates and IETF (internet engineering task group) formulate.H.248 be applicable to different media gateway types and different scenes respectively with the MGCP agreement.
The MGCP agreement is the MGCP of being formulated by IETF.The link model of MGCP protocol definition comprises end points and is connected two main concept: end points is data source or data sink, can be physical endpoint, also can be virtual endpoint; Endpoint type comprises digital channel, artificial line, recording server access point and interactive voice response access point; Endpoint ID is made up of the local name two parts in end points place gateway domain name and the gateway.Connection can be that point-to-point connects or multiple spot connects, and it is two a kind of associations between the end points that sends data mutually that point-to-point connects, and this is associated in after two end points all set up, and just can begin to transmit data.
MGCP adopts text protocol, and protocol message is divided into order and response, and each order needs recipient's back response, adopts the three-way handshake mode to confirm.Command messages is by order line and several parameters is capable forms, and response message has the answer code of 3 bit digital.MGCP adopts SDP (media description agreement) to describe the connection parameter to gateway.In order to reduce signaling transfer delay, MGCP adopts UDP (User Datagram Protoco (UDP)) to transmit.
In order to further specify the present invention program, be example with the MGCP agreement below, describe difference with the prior art of the present invention in detail.
With reference to Fig. 4, Fig. 4 is a subscriber dialing online flow process in the existing MGCP agreement:
1. the caller off-hook is notified SoftSwitch;
2. SoftSwitch is responded;
3. SoftSwitch sends RQNT (notice request) order to calling subscriber's side MGW, send dialing tone, issues the dialing of dialer map (media gateway collects the digits by this dialer map) and requirement monitor user ' and The Calling Party Hooks On incident;
4. calling subscriber's side MGW back response;
5. calling subscriber's side MGW sends NTFY (notice) order, gives SoftSwitch with subscriber dialing;
6. SoftSwitch back response;
7. SoftSwitch sends the RQNT order to calling subscriber's side MGW, requires to continue to collect the digits;
8. calling subscriber's side MGW echoes and answers;
9. SoftSwitch sends CRCX (create and connect) order to calling subscriber's side MGW, and for a connection is created in caller, connection mode is Receiveonly (only receiving), requires simultaneously to continue to collect the digits;
10. calling subscriber's side MGW echoes and answers, and SDP (media description) information that connects is returned to SoftSwitch;
11. SoftSwitch sends the CRCX order to called access side MGW, connection mode is Inactive (do not send out and do not receive), and gives called access side MGW with the SDP information band that caller connects;
13. SoftSwitch sends RQNT order, called subscriber's ring to called access side MGW;
14. called access side MGW back response;
15. SoftSwitch sends the RQNT order to calling subscriber's side MGW, the calling subscriber listens ring-back tone;
16. calling subscriber's side MGW back response;
17. called subscriber's off-hook, called access side MGW send the NTFY order;
18. SoftSwitch echoes should;
19. soft switch sends MDCX (modification connection mode) order to called subscriber's side MGW, the modification connection mode is SendReceive (transmitting-receiving), sets up voice channel and gives called subscriber's side MGW with caller SDP information band;
20. called subscriber's side MGW echoes should;
21. SoftSwitch sends the MDCX order to calling subscriber's side MGW, the modification connection mode is SendReceive, sets up voice channel and gives calling subscriber's side MGW with called SDP information band;
22. calling subscriber's side MGW echoes should;
23. calling subscriber's side MGW reports the MODEM single-tone;
24. SoftSwitch echoes should;
25. SoftSwitch sends MDCX message to called subscriber's example MGW and requires to switch to data channel;
26. it is corresponding that called MGW returns, and carries called SDP information;
27. SoftSwitch sends MDCX message to calling subscriber's side MGW and requires to switch to data channel;
28. it is corresponding that caller MGW returns.
Utilize the present invention, subscriber dialing online flow process is as shown in Figure 5 in the MGCP agreement:
1. the caller off-hook is notified SoftSwitch;
2. SoftSwitch is responded;
3. SoftSwitch sends RQNT (notification request, notice request) order to calling subscriber's side MGW, send dialing tone, issues the dialing of dialer map (media gateway collects the digits by this dialer map) and requirement monitor user ' and The Calling Party Hooks On incident;
4. calling subscriber's side MGW echoes and answers;
5. calling subscriber's side MGW sends NTFY (notice) order, gives SoftSwitch with subscriber dialing;
6. SoftSwitch echoes and answers;
7. SoftSwitch sends the RQNT order to calling subscriber's side MGW, requires to continue to collect the digits;
8. calling subscriber's side MGW echoes and answers;
9. SoftSwitch sends CRCX (create and connect) order to calling subscriber's side MGW, and for a connection is created in caller, connection mode is Receiveonly (only receiving), requires simultaneously to continue to collect the digits;
10. calling subscriber's side MGW echoes and answers, and SDP (media description) information that connects is returned to SoftSwitch;
11. SoftSwitch sends the CRCX order to called access side MGW, connection mode is Inactive (do not send out and do not receive), and gives called access side MGW with the SDP information band that caller connects;
13. SoftSwitch sends RQNT order, called subscriber's ring to called access side MGW;
14. called access side MGW echoes should;
15. SoftSwitch sends the RQNT order to calling subscriber's side MGW, the calling subscriber listens ring-back tone;
16. calling subscriber's side MGW echoes should;
17. called subscriber's off-hook, called access side MGW send the NTFY order;
18. SoftSwitch echoes should;
19. SoftSwitch sends the MDCX order to called subscriber's side MGW, the modification connection mode is SendReceive, sets up data channel, and gives called subscriber's side MGW with caller SDP information band;
20. called subscriber's side MGW echoes should;
21. SoftSwitch sends the MDCX order to calling subscriber's side MGW, the modification connection mode is SendReceive, sets up data channel and gives calling subscriber's side MGW with called SDP information band;
22. calling subscriber's side MGW echoes should.
As seen, the present invention is by configuration number recognition strategy in SoftSwitch, after SoftSwitch is received the telephone number that the user dials, whether the business that can identify user's request according to this strategy is business of networking, thereby business of networking and mandarin sound business are treated with a certain discrimination, no longer set up voice channel earlier for business of networking, after receiving the MODEM sound that the user side gateway reports, switch to data channel again, and still adopt normal business processing flow for other business, thereby both simplified the flow process of business of networking, and can not influence other business functions of user again.Improve the online connection speed, saved switch and Internet resources; Owing to do not need to carry out the switching of voice signal and data channel, improved the connection success rate greatly yet.
H.248 agreement is consistent with MGCP from basic ideas, and it is the MGCP that is proposed by ITU-T (standardization department of international telecommunication union telecommunication), improves forming on the MGCP agreement basis in early days.H.248 agreement is the gateway control protocol that is used to connect MGC and MG, be applied between media gateway and the soft switch and soft switch and H.248 between the terminal, and be the important protocol that soft switch should be supported.H.248 the link model of protocol definition comprises terminal and two main concept of context.Terminal is the logic entity among the MGW, can send and receive one or more medium, and at any time, a terminal belongs to and can only belong to a context, can represent time slot, artificial line and RTP (real-time protocol (RTP)) stream etc.Terminal type mainly contains semipermanent terminal (time division multiplex channel or artificial line etc.) and provisional terminal (as rtp streaming, being used for voice-bearer, data and vision signal or various mixed signal).With attribute, incident, signal, statistical representation termination property, in order to solve the shield terminal diverse problems, in agreement, introduced the bag notion, with the synthetic bag of the various characteristics parameter group of terminal.A context is the contact of some terminal rooms, and it describes the topological relation between the terminal and the parameter of medium mixing/exchange.
Utilize the present invention's subscriber dialing online flow process in agreement H.248 not repeat them here with similar in the MGCP agreement.
Though described the present invention by embodiment, those of ordinary skills know, the present invention has many distortion and variation and do not break away from spirit of the present invention, wish that appended claim comprises these distortion and variation and do not break away from spirit of the present invention.
Claims (8)
1, realize the method for network connection in a kind of next generation network environment, described next generation network comprises: user side media gateway, SoftSwitch, access side media gateway, access server is characterized in that described method comprises:
A, in described SoftSwitch the configuration number recognition strategy;
B, after described SoftSwitch is received the number that the user dials, what distinguish that described user asks to set up according to described number recognition strategy is business of networking or other business;
C, when the business of asking to set up as described user is business of networking, notify described access side media gateway and described user side media gateway directly to set up data channel for described user;
D, described user set up online by described data channel and described access server and are connected.
2, realize the method for network connection in the next generation network environment according to claim 1, it is characterized in that described steps A is specially:
When described SoftSwitch data configuration, distinguish network connection sign indicating number and common number.
3, realize the method for network connection in the next generation network environment according to claim 2, it is characterized in that described step B is specially:
When the number of dialing as described user was described network connection sign indicating number, the business that described user asks to set up was a business of networking.
4, realize the method for network connection in the next generation network environment according to claim 1, it is characterized in that described steps A is specially:
Common number of configuration and special access code mapping table in described SoftSwitch.
5, realize the method for network connection in the next generation network environment according to claim 4, it is characterized in that described step B is specially:
Described common number of number searching and the special access code mapping table dialed according to described user;
When the corresponding special access code of the number of dialing with described user, the business that described user asks to set up is a business of networking.
6, realize the method for network connection in the next generation network environment according to claim 1, it is characterized in that, notify described access side media gateway and described user side media gateway directly specifically to comprise described in the described step C for described user sets up data channel:
According to the number that described user dials, notify described access side media gateway to set up data channel for this user;
After the response signal of receiving described access side media gateway, notifying described client's side media gateway is that described user sets up data channel.
7, realize the method for network connection in the next generation network environment according to claim 1, it is characterized in that described method also comprises:
The business of asking to set up as described user be described other when professional, for this user sets up voice channel.
8, realize the method for network connection in the next generation network environment according to claim 1, it is characterized in that the bearing medium of described data channel is: ordinary telephone line, perhaps integrated services digital network, perhaps ADSL (Asymmetric Digital Subscriber Line).
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6035020A (en) * | 1997-08-26 | 2000-03-07 | Nec Usa, Inc. | Modem data call bypass of a telephone network voice switch |
| WO2001051945A1 (en) * | 2000-01-14 | 2001-07-19 | Robert Bosch Gmbh | Method for compensating for measurement errors that occur while measuring current in an energy store |
| CN1331446A (en) * | 2000-06-22 | 2002-01-16 | 上海贝尔有限公司 | By-pass method for dialing access service of internet |
| CN1556644A (en) * | 2003-12-30 | 2004-12-22 | �����ʵ��ѧ | Flexible exchange calling treatment system and method for realizing supporting multimedia business |
-
2005
- 2005-03-02 CN CNB2005100514129A patent/CN100459542C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6035020A (en) * | 1997-08-26 | 2000-03-07 | Nec Usa, Inc. | Modem data call bypass of a telephone network voice switch |
| WO2001051945A1 (en) * | 2000-01-14 | 2001-07-19 | Robert Bosch Gmbh | Method for compensating for measurement errors that occur while measuring current in an energy store |
| CN1331446A (en) * | 2000-06-22 | 2002-01-16 | 上海贝尔有限公司 | By-pass method for dialing access service of internet |
| CN1556644A (en) * | 2003-12-30 | 2004-12-22 | �����ʵ��ѧ | Flexible exchange calling treatment system and method for realizing supporting multimedia business |
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| CN1829178A (en) | 2006-09-06 |
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