CN1466336A - Method for realixing adaption layer procotol of ISDN user - Google Patents
Method for realixing adaption layer procotol of ISDN user Download PDFInfo
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- CN1466336A CN1466336A CNA02123650XA CN02123650A CN1466336A CN 1466336 A CN1466336 A CN 1466336A CN A02123650X A CNA02123650X A CN A02123650XA CN 02123650 A CN02123650 A CN 02123650A CN 1466336 A CN1466336 A CN 1466336A
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Abstract
A method for realizing an integrated service digital network Q921 user adaptive layer protocol is to lead in and use IUA link applying ISDN link concept to match IUA link to realize the matching to IUA protocol stack, applying IUA link working state4 and its migration process to manage and maintain IUA link to provide convenience to users for matching managing and maintaining IUA protocol, in which, IUA link is the association of ASP and SG including flow control protocol SCTP connection between ASP and SG with ASP and SG on it. IUA is configurated as follows: configurating IP address and port number of IUA point 2. configurating IP address and port number of the opposite port point 3. designing Q921 link carried by IUA link.
Description
Affiliated field
The present invention relates to Q.921 user adaptation layer (IUA of a kind of integrated services digital network, ISDNQ.921-User Adaptation Layer) implementation method of agreement belongs to Channel Technology and signaling system technical field with the signal form sign in the digital information transmission.
Background technology
As everyone knows, signaling system is the important component part of modern communication networks, also is the mutual common language of exchange message between each node in user and communication network and the communication network.Telecommunication apparatus is the key that guarantees the operation of communication network high reliability ground to the reliable transmission of signaling message.In conventional telecommunication network, there have been a series of standards and technical measures to guarantee the signaling system reliability of operation, as the present very ripe isdn signaling system that is used for the integrated digital service network.Signaling protocol moving model schematic diagram in the N-ISDN network that is present extensive use shown in Figure 1, L1 physical layer among the figure, Q.921 link layer and Q.931 network/application layer finish the specific function of protocol hierarchy separately respectively.
Along with the progressively maturation of IP packet network technologies, the advantage of IP packet network shows especially, and the IP packet network can be used for multiple business such as voice-bearer, data, image, multimedia.At present, traditional circuit-switched network and packet network are in fusing stage, for realizing the intercommunication of legacy circuit-switched networks network and IP packet network, the demand of circuit switching signaling protocols such as isdn signaling occurred transmitting on IP network.
In order to satisfy demand in IP network transmitting signaling agreement, internet engineer's task groups (IETF) is set up a special signaling transmission group, (SIGTRAN, SignallingTransport) protocol suite is originally to transmit on IP network in the signaling of using on the legacy circuit-switched in the signaling transmission that they formulated.In the signaling transmission standard of IETF, IUA (ISDN is Adaptation Layer Q.921-User) agreement is exactly to realize a kind of agreement of message transparent transmission between Q.921 link layer and its upper-layer user (as network layer Q.931), its basic application model be as shown in Figure 2 after gateway separates, the protocol model that signaling is transmitted between N-ISDN net and IP network.Q.921 IUA here provides and Q.931 seamless link: in the SG side, IUA replaces the position of original Q931, provides with Q.931 identical interface, and for Q.921, IUA is providing service such as interface, needn't change original other processing for Q931; And in the MGC side, IUA provides with identical interface Q.921, and for Q.931, it thinks to remain by Q921 provides data transport service for it, and Q931 and upper-layer user thereof needn't do change.Because the development trend of following telecommunications is the all-IP net, but, being extensive use of switching network for communication at present has been objective reality, because of a large amount of fund inputs being arranged wherein, has suitable scale and usefulness, so the telecommunications development tactics of present stage be on the basis that makes full use of existing switching network for communication step by step to the transition of all-IP net, the reason that signaling that Here it is transmission SIGTRAN produces.In fact, ISDN Q.921-User Adaptation Layer is to transmit the Q.921 agreement of user message by SCTP (SCTP, StreamControl Transport Protocol) on IP network, and this protocol application is in SGW SG and media gateway controller MGC.On the ISDN Q.921-User Adaptation Layer angle, the IUA that operates on the SGW SG equipment is called SG, operates in the process of handling the IUA business on the media gateway controller MGC equipment and is called ASP, and the IUA of both sides is asymmetric, needs difference address.
ISDN Q.921-User Adaptation Layer regulation: the transmission of messages between media gateway controller MGC and the SGW SG is to determine that according to interface identifier which bar link this message should be handled by, and each interface identifier and link are to concern one to one.Wherein the IUA of media gateway controller MGC side is with application server (AS, Application Server) is the notice media gateway (MG of unit, Media Gateway) the IUA user of side, it can handle the business which application server AS is come, SGW SG side IUA user then be that unit manages with the application server AS.According to agreement, AS (Application Server) literal translation is application server, and its implication is fuzzyyer, and domestic consumer is difficult for understanding; If directly the provider customer to communication products introduces above-mentioned notion, be difficult to get across to the provider customer, be unfavorable for that naturally the provider customer disposes and safeguard this product.Simultaneously, also need the user that agreement is had the dark better explanation understood to SGW SG, these nouns of application server process ASP.Therefore, above-mentioned this way to manage must have certain understanding to ISDN Q.921-User Adaptation Layer concerning operator, otherwise seems very chaotic.So, if come configuration and maintenance management mode, be difficult to make the user to understand and accept to the user interpretation ISDN Q.921-User Adaptation Layer according to SGW SG, application server AS, the application server process ASP of this agreement regulation, be unfavorable for the operation and maintenance of communication products.
Summary of the invention
The purpose of this invention is to provide the Q.921 implementation method of customer adaptation layer protocol of a kind of integrated services digital network, the link notion that this method user application is familiar, realize the Q.921 customer adaptation layer protocol of integrated services digital network, be convenient to user's understanding and maintenance, and configuration is simple, helps promoting to the user application of Related product.
The object of the present invention is achieved like this: a kind of Q.921 implementation method of customer adaptation layer protocol of integrated services digital network that realizes is characterized in that: configuration IUA link, to realize configuration to the ISDN Q.921-User Adaptation Layer stack; Operating state and the transition process thereof of using the IUA link administer and maintain the IUA link.
Described IUA link is the connection between application server process ASP and the SGW SG, it comprise that stream protocol SCTP between ASP and the SG connects and on application server process ASP and SGW SG.
The concrete steps of described configuration IUA link are: IP address, the port numbers of the local terminal end points of (1) configuration IUA link; (2) IP address, the port numbers of the opposite end end points of configuration IUA link; (3) the Q.921 link of the command transmitting that this IUA link carried is set.
The local terminal end points of described IUA link is application server process ASP, and its opposite end end points is SGW SG.
The local terminal end points of described IUA link is SGW SG, and its opposite end end points is application server process ASP.
Described each bar IUA link can carry the Q.921 link of one or more command transmitting.
Described IUA link working state has four kinds: link setup state (initial condition) not, the link setup state is prepared state of activation, state of activation.
Described IUA link working state transition process includes the following step:
(1) IUA link initial condition is link setup state not, and after receiving the link setup command that the user sends, protocol stack will send order and set up SCTP and connect, and the IUA link is also moved to link setup state simultaneously;
(2) when receiving the order of enabling the IUA link that the user sends, the IUA link will send enables application server process (ASP UP) message to SGW SG, if SGW SG accepts to enable request, then the IUA link is moved to the preparation state of activation;
(3) when receiving activation IUA link that the user sends, handling the order of IUA link traffic, the IUA link will send and activate application server process (ASP ACTIVE) message to SGW SG, if SGW SG accepts this order, the IUA link is just moved to state of activation;
(4) when receiving the time-out processing signaling business that the user sends, the order that cancellation activates, the IUA link will send cancellation and activate application server process (ASP INACTIVE) message and give SGW SG, and the IUA link is just moved to the preparation state of activation;
(5) when receiving the order that stops to manage business that the user sends, the IUA link stops application server process (ASP DOWN) message with transmission and gives SGW SG, and the IUA link is just moved to link setup state;
(6) tear the chain order open when what receive that the user sends, the IUA link will be removed SCTP and connect, and the IUA link is just moved to not link setup state.
If because certain is former thereby SCTP connect to be interrupted, then the IUA link all can be from other state transition to link setup state not.
If the IUA link receives the connection that SCTP reports up and restarts order preparing state of activation or state of activation, then this IUA link is moved to link setup state.
Characteristics of the present invention are that the link notion in the signaling network that the provider customer is familiar is incorporated in the ISDN Q.921-User Adaptation Layer, by using the IUA link, configuration and the maintenance that configuration and the maintenance of SGW SG, application server process ASP is converted to the IUA link simultaneously, and be that the center has proposed the protocol application networking model with the IUA link.Like this, the provider customer just can grasp and safeguard the use ISDN Q.921-User Adaptation Layer at an easy rate according to its configuration use experience to isdn link, for the provider customer understands and uses ISDN Q.921-User Adaptation Layer to provide great convenience.
In fact, method of the present invention remains to be followed the ISDN Q.921-User Adaptation Layer standard external interface is provided, and can realize intercommunication with the IUA equipment of other producer fully; Different just on Operation and Maintenance method of the present invention be to adopt the IUA link to substitute notions such as SGW SG, application server AS, application server process ASP, and be configuration and the maintenance management that agreement is carried out at the center with the IUA link, be convenient to user's configuration and safeguard.
Description of drawings
Fig. 1 is the basic moving model structural representation of signaling protocol in the N-ISDN network that uses now.
Fig. 2 is after gateway separates, the moving model structural representation that signaling is transmitted between N-ISDN and IP network.
Fig. 3 uses the IUA link application networking embodiment schematic diagram that method of the present invention constitutes.
Fig. 4 uses IUA Link State and the migration schematic diagram thereof that method of the present invention constitutes.
Embodiment
As everyone knows, in telecommunications network, link is meant a signaling transmission channel that joins two endpoints.Article one, link need possess following feature usually: two end points and the passage that is connected both.In the IUA link, application server process ASP and SGW SG are exactly two end points, the IUA link is exactly to connect application server process ASP and SGW SG connection between the two, it comprise that stream protocol SCTP between ASP and the SG connects and on application server process ASP and SGW SG, transmission of messages between the two is to be connected realization by ASP with stream protocol SCTP between the SG.
The present invention is a kind of Q.921 implementation method of customer adaptation layer protocol of integrated services digital network that realizes, its main feature is to introduce and use the familiar link notion of user: the IUA link, realize configuration by configuration to the ISDN Q.921-User Adaptation Layer stack to the IUA link, and operating state and the transition process thereof of using the IUA link administer and maintain the IUA link, and then dispose, manage, safeguard that the ISDN Q.921-User Adaptation Layer stack facilitates for the user.
The concrete steps that the present invention disposes the IUA link are: (1) at first disposes IP address, the port numbers of the local terminal end points of IUA link; With application server process ASP side is example, and the user will dispose the IP address and the port numbers of local terminal earlier when increasing an IUA link, promptly by this information configuration application server process ASP.(2) then dispose IP address, the port numbers of the opposite end end points of IUA link; Promptly by this information configuration SGW SG.(3) which the Q.921 link that the command transmitting that this IUA link carried is set at last has, and so just finished needed all configurations of ISDN Q.921-User Adaptation Layer.Concerning the user, this process is sightless, because the configuration of IUA link is readily appreciated that, the user does not need have anything to understand to agreement just can grasp configuration and use.Really, the local terminal end points also can be SGW SG, and at this moment, the opposite end end points is exactly application server process ASP.
An IUA link of the present invention can carry the Q.921 link of one or more command transmitting simultaneously, and these are a link composition IUA link (wherein ASP, SG, AS will be configured according to the agreement needs) Q.921.Enforcement illustration referring to a kind of IUA link networking application shown in Figure 3, four Q.921 signaling transmission of link are handled in a SGW SG carrying among the figure, wherein link the 0,1, the 3rd Q.921 is carried on the IUA link 0, these three Q.921 the business on the link then handle in application server process ASP side by 0 transmission of IUA link by ASP0; And Q.921 link 2 is to be carried on IUA link 1 transmitting signaling, and is handled in the opposite end by the ASP1 of application server process ASP side.In actual applications, every Q.921 link that the IUA link is carried, and handle via which application server process ASP or SGW SG and all to dispose decision by the user.
The present invention also proposes the operating state and the corresponding IUA link management mode of supporting IUA link with reference to the application of isdn link, administer and maintain the IUA link.The operating state of IUA link of the present invention has four kinds: link setup state (initial condition) not, the link setup state is prepared state of activation, state of activation.The different operating state of this IUA link is determined jointly by SCTP connection status and ASP state.
Referring to Fig. 4, IUA link working state transition process of the present invention includes the following step:
(1) IUA link initial condition is link setup state not, and after receiving the link setup command that the user sends, protocol stack will send order and set up SCTP and connect, and the IUA link is also moved to link setup state simultaneously.
(2) if at this moment receive the order of enabling the IUA link that the user sends, the IUA link will send enables the IUA that application server process (ASP UP) message is given SGW SG side, if SGW SG accepts to enable request, the IUA link is moved to the preparation state of activation.
(3) if the user wishes that the IUA link can handle the IUA link traffic, can send the order of IUA link activation.When receiving activation IUA link that the user sends, handling the order of IUA link traffic, the IUA link will send and activate application server process (ASP ACTIVE) message to SGW SG, if SGW SG accepts this order, the IUA link is just moved to state of activation; At this moment, the IUA link can be handled Q.921 link traffic.
(4), can send link cancellation activation command if the user need temporarily stop the business of processing signaling; When receiving the time-out processing signaling business that the user sends, the order that cancellation activates, the IUA link will send cancellation and activate application server process (ASP INACTIVE) message and give SGW SG, and the IUA link is just moved to the preparation state of activation.
(5) further reduce to link setup state if wish link, just send and stop professional order; When receiving the order that stops to manage business that the user sends, the IUA link stops application server process (ASPDOWN) message with transmission and gives SGW SG, and the IUA link is just moved to link setup state.
(6) if wish to discharge link more up hill and dale, can send and tear the chain order open; Tear the chain order open when what receive that the user sends, the IUA link will be removed SCTP and connect, thereby make IUA link migration arrival link setup state.
If because certain is former thereby SCTP connect to be interrupted, then the IUA link all can be from other state transition to link setup state not.If the IUA link receives the connection that SCTP reports up and restarts order preparing state of activation or state of activation, then this IUA link is moved to link setup state.In fact, the present invention is incorporated into the signaling link notion in the realization of ISDN Q.921-User Adaptation Layer.
Method of the present invention has been carried out private performance and has been implemented test in products such as the soft switch of the use SIGTRAN of applicant development and media gateway, realized goal of the invention, has good popularization and application prospect.
Claims (10)
1, a kind of integrated services digital network implementation method of customer adaptation layer protocol Q.921 is characterized in that: configuration IUA link, to realize configuration to the ISDN Q.921-User Adaptation Layer stack; Operating state and the transition process thereof of using the IUA link administer and maintain the IUA link.
2, a kind of integrated services digital network according to claim 1 implementation method of customer adaptation layer protocol Q.921, it is characterized in that: described IUA link is the connection between application server process ASP and the SGW SG, it comprise that stream protocol SCTP between ASP and the SG connects and on application server process ASP and SGW SG.
3, a kind of integrated services digital network according to claim 1 implementation method of customer adaptation layer protocol Q.921 is characterized in that: the concrete steps of described configuration IUA link are: IP address, the port numbers of the local terminal end points of (1) configuration IUA link; (2) IP address, the port numbers of the opposite end end points of configuration IUA link; (3) the Q.921 link of the command transmitting that this IUA link carried is set.
4, a kind of integrated services digital network according to claim 3 implementation method of customer adaptation layer protocol Q.921, it is characterized in that: the local terminal end points of described IUA link is application server process ASP, its opposite end end points is SGW SG.
5, a kind of integrated services digital network according to claim 3 implementation method of customer adaptation layer protocol Q.921, it is characterized in that: the local terminal end points of described IUA link is SGW SG, its opposite end end points is application server process ASP.
6, a kind of integrated services digital network according to claim 3 implementation method of customer adaptation layer protocol Q.921, it is characterized in that: described each bar IUA link can carry the Q.921 link of one or more command transmitting.
7, a kind of integrated services digital network according to claim 1 implementation method of customer adaptation layer protocol Q.921, it is characterized in that: described IUA link working state has four kinds: link setup state (initial condition) not, the link setup state is prepared state of activation, state of activation.
8, according to claim 1 or the 7 described a kind of integrated services digital networks implementation method of customer adaptation layer protocol Q.921, it is characterized in that: described IUA link working state transition process includes the following step:
(1) IUA link initial condition is link setup state not, and after receiving the link setup command that the user sends, protocol stack will send order and set up SCTP and connect, and the IUA link is also moved to link setup state simultaneously;
(2) when receiving the order of enabling the IUA link that the user sends, the IUA link will send enables application server process (ASP UP) message to SGW SG, if SGW SG accepts to enable request, then the IUA link is moved to the preparation state of activation;
(3) when receiving activation IUA link that the user sends, handling the order of IUA link traffic, the IUA link will send and activate application server process (ASP ACTIVE) message to SGW SG, if SGW SG accepts this order, the IUA link is just moved to state of activation;
(4) when receiving the time-out processing signaling business that the user sends, the order that cancellation activates, the IUA link will send cancellation and activate application server process (ASPINACTIVE) message and give SGW SG, and the IUA link is just moved to the preparation state of activation;
(5) when receiving the order that stops to manage business that the user sends, the IUA link stops application server process (ASP DOWN) message with transmission and gives SGW SG, and the IUA link is just moved to link setup state;
(6) tear the chain order open when what receive that the user sends, the IUA link will be removed SCTP and connect, and the IUA link is just moved to not link setup state.
9, a kind of integrated services digital network according to claim 7 implementation method of customer adaptation layer protocol Q.921 is characterized in that: if because certain is former thereby SCTP is connected interrupt, then the IUA link all can be from other state transition to link setup state not.
10, a kind of integrated services digital network according to claim 7 implementation method of customer adaptation layer protocol Q.921, it is characterized in that: if the IUA link receives the connection restart instruction that SCTP reports up in preparation state of activation or state of activation, then this IUA link is moved to link setup state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB02123650XA CN1192560C (en) | 2002-07-05 | 2002-07-05 | Method for realixing adaption layer procotol of ISDN user |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB02123650XA CN1192560C (en) | 2002-07-05 | 2002-07-05 | Method for realixing adaption layer procotol of ISDN user |
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| CN1466336A true CN1466336A (en) | 2004-01-07 |
| CN1192560C CN1192560C (en) | 2005-03-09 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006125356A1 (en) * | 2005-05-21 | 2006-11-30 | Huawei Technologies Co., Ltd. | A system and method for isdn access in the next generation network (ngn) |
| CN101674665B (en) * | 2009-10-22 | 2012-01-25 | 华为技术有限公司 | Wireless transmission interface building method and wireless transmission network element |
| CN101431436B (en) * | 2008-12-17 | 2012-06-13 | 中兴通讯股份有限公司 | Method and apparatus for signaling message transmission through Q.921 link |
| CN101013955B (en) * | 2005-12-19 | 2012-06-13 | 阿尔卡特朗讯公司 | Fast simulated annealing for traffic matrix estimation |
| CN101778039B (en) * | 2009-12-31 | 2012-07-04 | 华为技术有限公司 | Overload control method and system thereof |
-
2002
- 2002-07-05 CN CNB02123650XA patent/CN1192560C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006125356A1 (en) * | 2005-05-21 | 2006-11-30 | Huawei Technologies Co., Ltd. | A system and method for isdn access in the next generation network (ngn) |
| CN101013955B (en) * | 2005-12-19 | 2012-06-13 | 阿尔卡特朗讯公司 | Fast simulated annealing for traffic matrix estimation |
| CN101431436B (en) * | 2008-12-17 | 2012-06-13 | 中兴通讯股份有限公司 | Method and apparatus for signaling message transmission through Q.921 link |
| CN101674665B (en) * | 2009-10-22 | 2012-01-25 | 华为技术有限公司 | Wireless transmission interface building method and wireless transmission network element |
| CN101778039B (en) * | 2009-12-31 | 2012-07-04 | 华为技术有限公司 | Overload control method and system thereof |
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| Publication number | Publication date |
|---|---|
| CN1192560C (en) | 2005-03-09 |
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