CN101772190B - The method and apparatus that SGW initiatively connects with application server process - Google Patents
The method and apparatus that SGW initiatively connects with application server process Download PDFInfo
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- CN101772190B CN101772190B CN200910044858.7A CN200910044858A CN101772190B CN 101772190 B CN101772190 B CN 101772190B CN 200910044858 A CN200910044858 A CN 200910044858A CN 101772190 B CN101772190 B CN 101772190B
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- 238000000034 method Methods 0.000 title claims abstract description 216
- 230000004913 activation Effects 0.000 claims abstract description 31
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- 230000011664 signaling Effects 0.000 abstract description 19
- 230000003213 activating effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 8
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- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
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- 239000000203 mixture Substances 0.000 description 2
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Abstract
The present invention proposes a kind of method and apparatus that SGW and the second application server process (for subsequent use) connect in based on the NGN network of H.248 framework.In the present invention, SGW initiatively sends and substitutes request message to the second application server process, substitutes the first application server process (activating) be connected with SGW for asking it.After second application server process receives alternative request message, send and activate feedback message to SGW.After SGW receives and activates feedback message, transmission confirms message to this second application server process corresponding to this activation feedback message.Then, SGW sends and substitutes notification message to the first application server process, and for informing this first application server process, it is replaced.The present invention can solve in prior art and make because SGW connects with the second application server process passively the problem that signaling procedure interrupts or signaling is lost.
Description
Technical field
The present invention relates to the NGN network based on H.248 framework, particularly relate to based on the SGW in the NGN network of H.248 framework, media gateway, and application server process.
Background technology
At ISDN access network to the next generation network (NGN based on H.248 framework, NextGenerationNetwork) in, isdn signaling is by signaling transfer protocol (SIGTRAN, SignalTransport) application server process (ASP is transferred to, ApplicationServerProcess), and media gateway (MG, MediaGateway) (MGC is controlled by Media Gateway Controller, MediaGatewayController), signaling process is carried out in application server process and Media Gateway Controller cooperation.
Consider backup problem, as shown in Figure 1, existing based in the NGN network of H.248 framework, first application server process and the first Media Gateway Controller are in state of activation, second application server process and the second Media Gateway Controller are used for for subsequent use, after media gateway detects that itself and the first Media Gateway Controller disconnect, this media gateway transfers to be connected with the second Media Gateway Controller to communicate.From the angle of technology, if now the first application server process can transfer to from the connection with the first Media Gateway Controller and being connected with the second Media Gateway Controller, so, the first application server process proceeds signaling process and can become possibility.But the cooperation that this way needs application server process and Media Gateway Controller more complicated, therefore, this way is not widely used at present.
Certainly, in order to ensure that signaling process can continue, SGW also can transfer to from the connection with the first application server process and being connected with the second application server process.
In H.248 agreement, how media gateway is transferred to being connected with the second Media Gateway Controller from the connection with the first Media Gateway Controller and is defined, but how not transferring to being connected with the second application server process from the connection with the first application server process to SGW in this agreement defines.
And in ISDN Q.921-User Adaptation Layer, then propose SGW from the application server process with activation, namely the first application server process in Fig. 1, connection transfer to and application server process for subsequent use, namely the second application server process in Fig. 1, the two kinds of modes connected, in these two kinds of modes, SGW is all receive application management server message from application server process for subsequent use passively.
Fig. 2 shows in the ISDN Q.921-User Adaptation Layer according to prior art a kind of SGW defined and is connected from the application server process activated the method flow diagram transferring to and being connected with application server process for subsequent use.
First, the first application server process sends ASPInactive message to SGW, for informing that this first application server process of SGW is in unactivated state.
After SGW receives the ASPInactive message from the first application server process, send ASPInactiveACK message to the first application server process, for acknowledging receipt of the ASPInactive message from this first application server process.
Then, SGW sends NTFY (AS-pending) message to the first application server process and the second application server process respectively.
After second application server process receives NTFY (AS-pending) message from SGW, send ASPActive message to SGW, for informing SGW, it prepares start treatment business.
After SGW receives the ASPActive message from the second application server process, send ASPActiveACK message to the second application server process, for acknowledging receipt of the ASPActive message from this second application server process.
Finally, SGW sends NTFY (AS-active) message to the first application server process and the second application server process respectively.
By said process, SGW achieves the connection with the second application server process.
For this kind of method, SGW can only wait for the ASPActive message from the second application server process passively, then could transfer to from the connection with the first application server process and being connected with the second application server process.Therefore, before the second application server process is activated, signaling process is in interrupt status.
Fig. 3 shows in the ISDN Q.921-User Adaptation Layer according to prior art the another kind of SGW defined and is connected from the application server process activated the method flow diagram transferring to and being connected with application server process for subsequent use.
When the second application server process knows that it should be in state of activation and come after alternative first application server process is connected with SGW, this second application server process sends ASPActive message to SGW.
After SGW receives the ASPActive message from the second application server process, sending ASPActiveACK message to the second application server process, receiving the ASPActive message from this second application server process for confirming.
Then, SGW sends NTFY (AltASP-Act) message to the first application server process, and for informing the first application server process, it be instead of by the second application server process, now should be in unactivated state.
For this kind of method, SGW also can only wait for the ASPActive message from the second application server process passively, then could transfer the connection with the second application server process to from the connection with the first application server process.Before the second application server process is in state of activation, signaling is still sent to the first application server process, and now the first Media Gateway Controller may break down, media gateway is just attempting being connected with the second Media Gateway Controller, therefore, may be lost by the signaling of the first application server process process.
And, in the method, second application server process needs to trigger it according to the Indication message from the second Media Gateway Controller and sends ASPActive message thus initiatively replace the first application server process, and this needs cooperation very complicated between application server process and Media Gateway Controller, extensively do not realized at present.
Summary of the invention
For solving above-mentioned shortcoming of the prior art, the present invention proposes a kind of method and apparatus that SGW and the second application server process (application server process for subsequent use) connect in based on the NGN network of H.248 framework.In the present invention, after media gateway to transfer to from the connection with the first Media Gateway Controller (Media Gateway Controller activated) and is connected with the second Media Gateway Controller (Media Gateway Controller for subsequent use), this media gateway sends an Indication message to SGW, is used to indicate SGW and sends alternative request message to the second application server process.After SGW receives this Indication message, initiatively send and substitute request message to the second application server process, this alternative request message is connected with SGW for asking the second application server process (application server process for subsequent use) to substitute the first application server process (application server process activated).After second application server process receives the alternative request message from SGW, send and activate feedback message to SGW.After SGW receives the activation feedback message from the second application server process, transmission confirms message to this second application server process corresponding to this activation feedback message.Then, SGW sends and substitutes notification message to the first application server process, and for informing this first application server process, it is replaced, that is, will connect with the second application server process after SGW.
According to a first aspect of the invention, provide a kind of method for establishing a communications link with the second application server process in based on the SGW of the H.248 access node of the NGN network of framework, wherein, comprise the following steps: b. sends and substitutes request message to described second application server process; C. the activation feedback message from described second application server process is received; D. according to received activation feedback message, establish a communications link with described second application server process.
Preferably, further comprising the steps of before described step b: a. receives the Indication message from media gateway, wherein, described Indication message is used to indicate this SGW and sends alternative request message to described second application server process.
Preferably, described steps d comprises the following steps: d1. is according to received activation feedback message, and transmission confirms message to described second application server process corresponding to this activation feedback message; D2. send and substitute notification message to the first application server process, wherein, described alternative notification message is used for informing this first application server process, and it is replaced; D3. establish a communications link with described second application server process.
According to a second aspect of the invention, provide a kind of method established a communications link for auxiliary SGW and the second application server process in based on the media gateway of the H.248 access node of framework NGN network, wherein, comprise the following steps: i. sends Indication message to described SGW, wherein, described Indication message is used to indicate this SGW and sends alternative request message to described second application server process.
According to a third aspect of the invention we, provide a kind of in based on the application server process of the H.248 NGN network of framework for receiving the method for the alternative request message from SGW, wherein, comprise the following steps: x. receives the alternative request message from SGW; Y. according to received alternative request message, send and activate feedback message to described SGW.
According to a forth aspect of the invention, provide a kind of control device for establishing a communications link with the second application server process in based on the SGW of the H.248 access node of the NGN network of framework, wherein, comprise: the first dispensing device, for sending alternative request message to described second application server process; First receiving device, for receiving the activation feedback message from described second application server process; First apparatus for establishing, for according to received activation feedback message, establishes a communications link with described second application server process.
Preferably, described control device also comprises: the second receiving system, and for receiving the Indication message from media gateway, wherein, described Indication message is used to indicate this SGW and sends alternative request message to described second application server process.
Preferably, described first apparatus for establishing comprises: the second dispensing device, for according to received activation feedback message, send correspond to this activation feedback message confirm message to described second application server process; 3rd dispensing device, for sending alternative notification message to the first application server process, wherein, described alternative notification message is used for informing this first application server process, and it is replaced; Second apparatus for establishing, for establishing a communications link with described second application server process.
According to a fifth aspect of the invention, provide a kind of sub controlling unit established a communications link for auxiliary SGW and the second application server process in based on the media gateway of the H.248 access node of framework NGN network, wherein, comprise: the 4th dispensing device, for sending Indication message to described SGW, wherein, described Indication message is used to indicate this SGW and sends alternative request message to described second application server process.
According to a sixth aspect of the invention, provide a kind of in based on the application server process of the H.248 NGN network of framework for receiving the message receiving apparatus of the alternative request message from SGW, wherein, comprise: the 3rd receiving system, for receiving the alternative request message from SGW; 5th dispensing device, for according to received alternative request message, sends and activates feedback message to described SGW.
The advantage of technical solution of the present invention is, after media gateway to transfer to from the connection with the first Media Gateway Controller and is connected with the second Media Gateway Controller, SGW can active request be connected with the second application server process, thus avoid after media gateway transfers to and being connected with the second Media Gateway Controller, the situation that SGW is still connected with the first application server process.
Even if according to the two kinds of modes mentioned in the ISDN Q.921-User Adaptation Layer of prior art, SGW establishes with the second application server process passively and is connected, and the present invention also can solve the interruption of signaling process or the loss problem of signaling under passive state.
Accompanying drawing explanation
By reading the detailed description done non-limiting example done with reference to the following drawings, other features, objects and advantages of the present invention will become more apparent:
Fig. 1 shows the structure chart controlled according to signaling in based on the NGN network of H.248 framework and the media of prior art;
Fig. 2 shows in the ISDN Q.921-User Adaptation Layer according to prior art a kind of SGW defined and is connected from the application server process activated the method flow diagram transferring to and being connected with application server process for subsequent use;
Fig. 3 shows in the ISDN Q.921-User Adaptation Layer according to prior art the another kind of SGW defined and is connected from the application server process activated the method flow diagram transferring to and being connected with application server process for subsequent use;
Fig. 4 shows according to the structure chart that signaling and media control in based on the NGN network of H.248 framework of the present invention;
Fig. 5 show according to of the present invention in based on the NGN network of H.248 framework SGW be connected from the application server process activated the method flow diagram transferring to and being connected with application server process for subsequent use; And
Fig. 6 show according to of the present invention in based on the NGN network of H.248 framework SGW be connected from the application server process activated the system architecture diagram transferring to and being connected with application server process for subsequent use.
In accompanying drawing, identical or similar accompanying drawing mark represents identical or similar parts.
Embodiment
Describe the present invention referring to accompanying drawing:
Fig. 4 shows according to the structure chart that signaling and media control in based on the NGN network of H.248 framework of the present invention.
In this framework, signaling transfers to corresponding application server process, the first application server process 3 or the second application server process 3 ' namely in Fig. 4 by signaling transfer protocol (SIGTRAN).In this embodiment, we are the application server process activated with the first application server process 3, for the second application server process 3 ' for application server process for subsequent use is described.
Communicated by MGCP (H.248/Megaco) between Media Gateway Controller with media gateway, namely media gateway communicates with the first Media Gateway Controller 4 in Fig. 4 or the second Media Gateway Controller 4 '.In this embodiment, we with the first Media Gateway Controller 4 be activate Media Gateway Controller, the second Media Gateway Controller 4 ' for Media Gateway Controller for subsequent use be that example is described.
It should be noted that, although only using second application server process 3 ' and second Media Gateway Controller 4 ' as application server process for subsequent use and Media Gateway Controller for subsequent use in this embodiment, but, in a particular application, multiple application server process for subsequent use and multiple Media Gateway Controller for subsequent use can be comprised.This is that those skilled in the art will be understood that, therefore not to repeat here.
Referring to Fig. 5 and composition graphs 4 technical scheme of the present invention is described in detail.
Fig. 5 show according to of the present invention in based on the NGN network of H.248 framework SGW be connected from the application server process activated the method flow diagram transferring to and being connected with application server process for subsequent use.
In figure, the first application server process 3 is the application server process activated, and the second application server process 3 ' is application server process for subsequent use.
After media gateway 2 detects and disconnects with the first Media Gateway Controller 4, this media gateway 2 connects with the second Media Gateway Controller 4 ' and communicates.This is existing definition in H.248 agreement, and neither the flesh and blood place of technical solution of the present invention, and for simplicity's sake, therefore not to repeat here.
After media gateway 2 and the second Media Gateway Controller 4 ' connect, media gateway 2 sends Indication message to SGW 1, is used to indicate SGW 1 and sends alternative request message to the second application server process 3 '.
After SGW 1 receives the Indication message from media gateway 2, in step sl, according to this received Indication message, send and substitute request message, i.e. NTFY (override-request), to the second application server process 3 '.
After second application server process 3 ' receives the alternative request message from SGW 1, in step s 2, according to received alternative request message, send and activate feedback message, i.e. ASPActive, to SGW 1.
After SGW 1 receives the activation feedback message from the second application server process 3 ', in step s3, according to received activation feedback message, send the acknowledge message corresponding to this activation feedback message, i.e. ASPActiveACK, to the second application server process 3 ', for confirming the activation feedback message received from the second application server process 3 '.
Then, in step s 4 which, SGW 1 sends and substitutes notification message, i.e. NTFY (AltASP-Act), to the first application server process 3, for informing this first application server process 3, it is substituted by the second application server process 3 ', that is, will connect with the second application server process 3 ' after SGW 1.
Finally, SGW 1 and the second application server process 3 ' establish a communications link.
In this embodiment, we to be disconnected with the first Media Gateway Controller 4 with media gateway 2 to be connected, then connect with the second Media Gateway Controller 4 ' explanation carried out technical scheme of the present invention premised on communicating, putting before this, in order to ensure the continuation of signaling procedure, media gateway 2 sends Indication message to SGW 1, is used to indicate it and sends alternative request message to the second application server process 3 '.
It should be noted that, technical scheme of the present invention can apply to following scene equally: SGW 1 detects that it is disconnected with the first application server process 3 and is connected, so, this SGW 1 initiatively sends and substitutes request message, i.e. NTFY (override-request), to the second application server process 3 ', ask alternative first application server process 3 of this second application server process 3 ' to connect with this SGW 1 and communicate.Meanwhile, media gateway 2 also transfers the connection with the second Media Gateway Controller 4 ' to from the connection with the first Media Gateway Controller 4.
Under above this application scenarios, media gateway 2 sends Indication message to SGW 1, and this step being used to indicate alternative request message to the second application server process 3 ' of SGW 1 transmission can be omitted.
Be more than from the angle of method, technical scheme of the present invention is described in detail, below the angle from apparatus module be described technical scheme of the present invention.
Referring to Fig. 6 and composition graphs 4 technical scheme of the present invention is described in detail.
Fig. 6 show according to of the present invention in based on the NGN network of H.248 framework SGW be connected from the application server process activated the system architecture diagram transferring to and being connected with application server process for subsequent use.Wherein, the control device 10 that SGW 1 comprises comprises the second receiving system 101, first dispensing device 102, first receiving device 103, the second dispensing device the 104, three dispensing device 105 and the second apparatus for establishing 106.The auxiliary control control device 20 that media gateway 2 comprises comprises the 4th dispensing device 201.The message receiving apparatus 30 ' that second application server process 3 ' comprises comprises the 3rd receiving system 301 ' and the 5th dispensing device 302 '.
After media gateway 2 detects and disconnects with the first Media Gateway Controller 4, this media gateway 2 connects with the second Media Gateway Controller 4 ' and communicates.This is existing definition in H.248 agreement, and neither the flesh and blood place of technical solution of the present invention, and for simplicity's sake, therefore not to repeat here.
After media gateway 2 and the second Media Gateway Controller 4 ' connect, the 4th dispensing device 201 in the sub controlling unit 20 that media gateway 2 comprises sends Indication message to SGW 1, is used to indicate SGW 1 and sends alternative request message to the second application server process 3 '.
After the second receiving system 101 in the control device 10 that SGW 1 comprises receives the Indication message from media gateway 2, the first dispensing device 102 in control device 10 is according to this received Indication message, send and substitute request message, i.e. NTFY (override-request), to the second application server process 3 '.
After the 3rd receiving system 301 ' in the message receiving apparatus 30 ' that second application server process 3 ' comprises receives the alternative request message from SGW 1, the 5th dispensing device 302 ' in message receiving apparatus 30 ' is according to received alternative request message, send and activate feedback message, i.e. ASPActive, to SGW 1.
After first receiving device 103 in the control device 10 that SGW 1 comprises receives the activation feedback message from the second application server process 3 ', the second dispensing device 104 in control device 10 is according to received activation feedback message, send the acknowledge message corresponding to this activation feedback message, i.e. ASPActiveACK, to the second application server process 3 ', for confirming the activation feedback message received from the second application server process 3 '.
Then, the 3rd dispensing device 105 in the control device 10 that SGW 1 comprises sends and substitutes notification message, i.e. NTFY (AltASP-Act), to the first application server process 3, for informing this first application server process 3, it is substituted by the second application server process 3 ', that is, will connect with the second application server process 3 ' after SGW 1.
Finally, the second apparatus for establishing 106 in the control device 10 that comprises of SGW 1 and the second application server process 3 ' establish a communications link.
In this embodiment, we to be disconnected with the first Media Gateway Controller 4 with media gateway 2 to be connected, then connect with the second Media Gateway Controller 4 ' explanation carried out technical scheme of the present invention premised on communicating, putting before this, in order to ensure the continuation of signaling procedure, the 4th dispensing device 201 in the sub controlling unit 20 that media gateway 2 comprises sends Indication message to SGW 1, is used to indicate it and sends alternative request message to the second application server process 3 '.
It should be noted that, technical scheme of the present invention can apply to following scene equally: SGW 1 detects to be disconnected with the first application server process 3 and is connected, so, the first dispensing device 102 in the control device 10 that this SGW 1 comprises initiatively sends and substitutes request message, i.e. NTFY (override-request), to the second application server process 3 ', ask alternative first application server process 3 of this second application server process 3 ' to connect with SGW 1 and communicate.Meanwhile, media gateway 2 also transfers the connection with the second Media Gateway Controller 4 ' to from the connection with the first Media Gateway Controller 4.
Under above this application scenarios, the 4th dispensing device 201 in the sub controlling unit 20 that media gateway 2 comprises can omit.
Be described specific embodiments of the invention above, it is to be appreciated that the present invention is not limited to above-mentioned specific execution mode, those skilled in the art can make various sizing and amendment within the scope of the appended claims.
Claims (6)
1. the method for establishing a communications link with the second application server process in based on the SGW of the H.248 access node of the NGN network of framework, wherein, comprises the following steps:
A. receive the Indication message from media gateway, wherein, described Indication message is used to indicate this SGW and sends alternative request message to described second application server process;
B. according to received Indication message, send and substitute request message to described second application server process;
C. the activation feedback message from described second application server process is received;
D. according to received activation feedback message, establish a communications link with described second application server process.
2. method according to claim 1, is characterized in that, described steps d comprises the following steps:
D1. according to received activation feedback message, transmission confirms message to described second application server process corresponding to this activation feedback message;
D2. send and substitute notification message to the first application server process, wherein, described alternative notification message is used for informing this first application server process, and it is replaced;
D3. establish a communications link with described second application server process.
3. the method established a communications link for auxiliary SGW and the second application server process in based on the media gateway of the H.248 access node of framework NGN network, wherein, comprises the following steps:
I. send Indication message to described SGW, wherein, described Indication message is used to indicate this SGW and sends alternative request message to described second application server process.
4. the control device for establishing a communications link with the second application server process in based on the SGW of the H.248 access node of the NGN network of framework, wherein, comprising:
First dispensing device, for sending alternative request message to described second application server process;
First receiving device, for receiving the activation feedback message from described second application server process;
First apparatus for establishing, for according to received activation feedback message, establishes a communications link with described second application server process.
Second receiving system, for receiving the Indication message from media gateway, wherein, described Indication message is used to indicate this SGW and sends alternative request message to described second application server process;
Wherein, described first dispensing device also for according to received Indication message, sends and substitutes request message to described second application server process.
5. control device according to claim 4, is characterized in that, described first apparatus for establishing comprises:
Second dispensing device, for according to received activation feedback message, send correspond to this activation feedback message confirm message to described second application server process;
3rd dispensing device, for sending alternative notification message to the first application server process, wherein, described alternative notification message is used for informing this first application server process, and it is replaced;
Second apparatus for establishing, for establishing a communications link with described second application server process.
6. the sub controlling unit established a communications link for auxiliary SGW and the second application server process in based on the media gateway of the H.248 access node of framework NGN network, wherein, comprising:
4th dispensing device, for sending Indication message to described SGW, wherein, described Indication message is used to indicate this SGW and sends alternative request message to described second application server process.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1984093A (en) * | 2006-04-25 | 2007-06-20 | 华为技术有限公司 | Method and apparatus for switching signaling link |
| CN101064633A (en) * | 2006-04-25 | 2007-10-31 | 中兴通讯股份有限公司 | Method for switching automatically signaling routing in dual homing |
| CN101188507A (en) * | 2006-11-15 | 2008-05-28 | 中兴通讯股份有限公司 | Failure notification method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1984093A (en) * | 2006-04-25 | 2007-06-20 | 华为技术有限公司 | Method and apparatus for switching signaling link |
| CN101064633A (en) * | 2006-04-25 | 2007-10-31 | 中兴通讯股份有限公司 | Method for switching automatically signaling routing in dual homing |
| CN101188507A (en) * | 2006-11-15 | 2008-05-28 | 中兴通讯股份有限公司 | Failure notification method |
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| CP01 | Change in the name or title of a patent holder |
Address after: 201206 Pudong Jinqiao Export Processing Zone, Nanjing Road, No. 388, Shanghai Co-patentee after: SHANGHAI BELL SOFTWARE CO., LTD. Patentee after: Shanghai NOKIA Baer Limited by Share Ltd Address before: 201206 Pudong Jinqiao Export Processing Zone, Nanjing Road, No. 388, Shanghai Co-patentee before: SHANGHAI BELL SOFTWARE CO., LTD. Patentee before: Shanghai Alcatel-Lucent Co., Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201206 Pudong Jinqiao Export Processing Zone, Nanjing Road, No. 388, Shanghai Co-patentee after: Shanghai NOKIA Baer Software Co., Ltd. Patentee after: Shanghai NOKIA Baer Limited by Share Ltd Address before: 201206 Pudong Jinqiao Export Processing Zone, Nanjing Road, No. 388, Shanghai Co-patentee before: SHANGHAI BELL SOFTWARE CO., LTD. Patentee before: Shanghai NOKIA Baer Limited by Share Ltd |