CN101374277A - Method for implementing associated channel signaling of NGN system - Google Patents
Method for implementing associated channel signaling of NGN system Download PDFInfo
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- CN101374277A CN101374277A CNA2008101675653A CN200810167565A CN101374277A CN 101374277 A CN101374277 A CN 101374277A CN A2008101675653 A CNA2008101675653 A CN A2008101675653A CN 200810167565 A CN200810167565 A CN 200810167565A CN 101374277 A CN101374277 A CN 101374277A
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Abstract
A method for achieving channel associated signaling of the next generation network system comprises the following steps: (a) transmitting an occupation message to a soft switch after a gateway receives a call request message transmitted by a switch, and simultaneously transmitting an off-hook response message to the switch; (b) carrying out register signal interaction with the gateway after the switch receives the response message; and (c) monitoring an occupation acknowledgement message transmitted from the soft switch in the register signal interaction process of the gateway, and continuing the subsequent calling process if the gateway receives the occupation acknowledgement message when the register signal interaction is ended, or else, releasing the call. The method has the characteristic of relatively longer register signal interaction time, and can adjust the message interaction process, thereby minimizing the influence caused by network delay.
Description
Technical field
The present invention relates to the network element signaling interaction method of next generation network (NGN, Next Generation Network), relate in particular to the method that the NGN system realizes channel associated signalling.
Background technology
In the NGN system, the realization of channel associated signalling is finished jointly by gateway and soft switchcall server.Gateway side mainly realize and conventional switch between channel associate signals mutual, and soft switch realizes control and Business Processing to channel associated signalling.
Initiate the process of calling out as shown in Figure 1 by conventional switch to NGN, comprise the steps: with the road
101: conventional switch is sent HookoffFw message to the NGN gateway, initiates channel associated signalling and calls out;
The 102:NGN gateway sends to soft switch and takies message, and the message that switch is made a call passes to soft switch;
The 103:NGN gateway is received the acknowledgement message that takies of soft switch, is identified and can makes a call;
The 104:NGN gateway is responded HookoffAck message to conventional switch;
105: conventional switch begins to carry out the mutual of register signal with the NGN gateway;
106: the subsequent flows journey is continued in the mutual end back of carrying out register signal.
Because the message between NGN gateway and the soft switch is to transmit by IP network, under the bad situation of network condition, certain time-delay can appear in message.Conventional switch is conditional to the stand-by period of HookoffAck message in the channel associated signalling, and some switch has only 20 milliseconds even shorter stand-by period; Under the bad situation of network condition, the interacting message between NGN gateway and the soft switch can reach hundreds of milliseconds, and in the case, the traditional exchange chance causes call failure because wait HookoffAck message is overtime.
This shows, above-mentioned NGN system realizes that the method for channel associated signalling is to be controlled by soft switch fully, be the NGN gateway only receive soft switch take acknowledgement message after, just can give end switch is responded HookoffAck message, so to the influence that NGN gateway messages response time limits, can reduce with the road calling ratio of success owing to network delay.
Summary of the invention
Technical problem to be solved by this invention provides the method that a kind of NGN system is realized channel associated signalling, can reduce the influence of network delay to the restriction of message response time, makes the off-hook response message of channel associated signalling reply to the opposite end in time.
In order to solve the problems of the technologies described above, the invention provides the method that a kind of NGN system is realized channel associated signalling, comprising:
A, gateway promptly send to soft switch and take message after receiving the call request message of switch transmission; Simultaneously, send the off-hook response message to switch;
After b, switch were received this response message, it is mutual that beginning and gateway carry out register signal;
C, gateway are monitored the acknowledgement message that takies from soft switch in register signal reciprocal process; When register signal finishes alternately: take acknowledgement message if gateway has been received, then continue the follow-up flow process of calling out; Do not take acknowledgement message if gateway is received, then discharge this time and call out.
Further, step b also comprises: switch sends user number information to gateway.
Further, step c also comprises: gateway receive take acknowledgement message in, also receive the directory message that soft switch sends.
Further, also comprised before the follow-up flow process of described calling: gateway carries out numbers match according to directory to receiving number.
In order to solve the problems of the technologies described above, the invention provides the answer method that NGN system is realized gateway in the channel associated signalling process, comprising: gateway promptly sends to soft switch and takies message after receiving the call request message of switch transmission; Simultaneously, send the off-hook response message to switch.
Further, described method also comprises:
After switch was received described response message, it is mutual that beginning and gateway carry out register signal;
Gateway is monitored the acknowledgement message that takies from soft switch in register signal reciprocal process; When register signal finishes alternately:, then continue the follow-up flow process of calling out if gateway has received that this takies acknowledgement message; If gateway is not received the described acknowledgement message that takies, then discharge this time and call out.
Further, described method also comprises: switch and gateway carry out register signal when mutual, send user number information to gateway.
Further, described method also comprises: gateway receive take acknowledgement message in, also receive the directory message that soft switch sends.
Further, also comprised before the follow-up flow process of described calling: gateway carries out numbers match according to described directory to receiving number.
Compared with prior art, the present invention is directed to relatively long characteristics of mutual time of register signal, adjusted message interaction process, the NGN gateway is the immediate acknowledgment switch after receiving the HookoffFw message of switch, waits for the acknowledgement message that takies of soft switch then in dispatching device reciprocal process again.Only still do not receive the acknowledgement message that takies of soft switch after dispatching device and finishing alternately, the NGN gateway just thinks to take failure, calls out thereby discharge this time.Because the NGN gateway is with relative longer to the mutual time of register signal between the end switch, whole register signal reciprocal process generally can be more than 10 seconds, and therefore the influence that network delay can be caused is reduced to minimum.
Description of drawings
Fig. 1 is the method flow diagram that existing NGN system realizes channel associated signalling;
Fig. 2 is the method flow diagram that NGN of the present invention system realizes channel associated signalling;
Fig. 3 adopts method NGN gateway of the present invention to realize the method flow diagram of immediate acknowledgment.
Embodiment
NGN system provided by the invention is realized the method for channel associated signalling, and comprising: switch sends HookoffFw message to the NGN gateway; The NGN gateway is received promptly to send to soft switch after this message and is taken message, simultaneously, sends the HookoffAck response message to switch; Switch promptly begins to carry out the mutual of register signal with the NGN gateway after receiving this response message; When the NGN gateway finishes alternately at register signal,, then continue the follow-up flow process of calling out if received the acknowledgement message that takies of soft switch; If also do not receive that this takies acknowledgement message, then discharge this time and call out.
Below in conjunction with accompanying drawing and preferred embodiment technique scheme of the present invention is more at length set forth.
Have at the NGN network under the situation of certain time-delay, adopt the present invention to realize that the method for channel associated signalling can effectively reduce the influence of network delay.Fig. 2 expressed adopt this method from switch to the NGN gateway again to the message interaction process of soft switch, comprising:
Step 201: switch sends HookoffFw message to the NGN gateway, the expression request of making a call;
After step 202:NGN gateway is received this HookoffFw message, promptly send and take message, make a call to soft switch to soft switch;
Step 203:NGN gateway to soft switch send take message after, promptly send the expression off-hook HookoffAck message of replying, and do not need to wait for the acknowledgement message that takies of soft switch to switch;
Step 204: after switch is received this HookoffAck message, promptly begin to carry out the mutual of register signal, send information such as Subscriber Number to the NGN gateway with the NGN gateway;
Step 205:NGN gateway takies acknowledgement message and directory message what carry out may receiving in the mutual process of register signal soft switch with switch;
Step 206: register signal finishes alternately, has received the acknowledgement message that takies of soft switch if the NGN gateway is judged, then begins receiving that number carries out numbers match according to directory, and continues follow-up flow process; If also do not receive the acknowledgement message that takies of soft switch, then discharge this time and call out.
Fig. 3 is the flow process that the NGN gateway is realized HookoffAck message immediate acknowledgment, comprising:
Step 310:NGN gateway is received the HookoffFw message to end switch;
Step 320: send to soft switch and to take message, expression makes a call, and to end switch being sent HookoffAck message, the expression off-hook is replied simultaneously;
Step 330: with end switch is carried out the mutual of register signal, simultaneously the acknowledgement message that takies of soft switch is monitored;
Step 340: finish alternately with register signal to end switch;
Step 350: judge whether to receive the acknowledgement message that takies of soft switch, if execution in step 360, execution in step 370 then if not;
Step 360:NGN gateway continues the follow-up flow process of calling;
Step 370:NGN gateway discharges this time to be called out.
In sum, the present invention has adjusted the channel associated signalling message interaction process dexterously as can be seen, the acknowledgement message that takies of NGN gateway waits soft switch is placed in the register signal reciprocal process that takes a long time and carries out, therefore the influence that network delay is caused is reduced to minimum level, make that the NGN gateway can the immediate acknowledgment switch after receiving the HookoffFw message of switch, thus the call failure of having avoided switch to cause effectively because wait acknowledge message is overtime.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (9)
1. a NGN system is realized the method for channel associated signalling, comprising:
A, gateway promptly send to soft switch and take message after receiving the call request message of switch transmission; Simultaneously, send the off-hook response message to described switch;
After b, described switch were received described response message, it is mutual that beginning and described gateway carry out register signal;
C, described gateway are monitored the acknowledgement message that takies from described soft switch in described register signal reciprocal process; When described register signal finishes alternately:, then continue the follow-up flow process of calling out if described gateway has been received the described acknowledgement message that takies; If described gateway is not received the described acknowledgement message that takies, then discharge this time and call out.
2. in accordance with the method for claim 1, it is characterized in that step b also comprises: described switch sends user number information to described gateway.
3. according to claim 1 or 2 described methods, it is characterized in that step c also comprises: described gateway receive described take acknowledgement message in, also receive the directory message that described soft switch sends.
4. in accordance with the method for claim 3, it is characterized in that, also comprised before the follow-up flow process of described calling: described gateway carries out numbers match according to described directory to receiving number.
5. a NGN system is realized the answer method of gateway in the channel associated signalling process, comprising: described gateway promptly sends to soft switch and takies message after receiving the call request message that switch sends; Simultaneously, send the off-hook response message to described switch.
6. in accordance with the method for claim 5, it is characterized in that described method also comprises:
After described switch was received described response message, it is mutual that beginning and described gateway carry out register signal;
Described gateway is monitored the acknowledgement message that takies from described soft switch in described register signal reciprocal process; When described register signal finishes alternately:, then continue the follow-up flow process of calling out if described gateway has been received the described acknowledgement message that takies; If described gateway is not received the described acknowledgement message that takies, then discharge this time and call out.
7. in accordance with the method for claim 6, it is characterized in that described method also comprises: described switch and described gateway carry out register signal when mutual, send user number information to described gateway.
8. according to claim 6 or 7 described methods, it is characterized in that described method also comprises: described gateway receive described take acknowledgement message in, also receive the directory message that described soft switch sends.
9. in accordance with the method for claim 8, it is characterized in that, also comprised before the follow-up flow process of described calling: described gateway carries out numbers match according to described directory to receiving number.
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| CN2008101675653A CN101374277B (en) | 2008-10-08 | 2008-10-08 | Method for implementing associated channel signaling of NGN system |
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| CN101374277B CN101374277B (en) | 2012-07-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102131005A (en) * | 2010-12-10 | 2011-07-20 | 华为技术有限公司 | Method, device and system for implementing hotline service in internet protocol (IP) network |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100488295C (en) * | 2005-02-25 | 2009-05-13 | 华为技术有限公司 | Calling treatment method for use under next generation network architecture |
| CN101111052A (en) * | 2006-07-21 | 2008-01-23 | 华为技术有限公司 | Method for implementing MFS dispatching machine signaling under separation structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102131005A (en) * | 2010-12-10 | 2011-07-20 | 华为技术有限公司 | Method, device and system for implementing hotline service in internet protocol (IP) network |
| CN102131005B (en) * | 2010-12-10 | 2014-12-24 | 华为技术有限公司 | Method, device and system for implementing hotline service in internet protocol (IP) network |
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Granted publication date: 20120718 Termination date: 20171008 |