CN101997860A - Method and device for communication link detection management in NGN network architecture - Google Patents
Method and device for communication link detection management in NGN network architecture Download PDFInfo
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Abstract
The invention discloses a method and a device for communication link detection management in next generation network (NGN) network architecture. Started from the aspect of reducing session border controller (SBC) transmission link detection message, when an integrated access device (IAD) sends link detection message to an SBC to detect whether the link reaching an soft switch (SS) is abnormal, the SBC answers the IAD based on the SS link detection mechanism of a core network device according to the record result in an SBC registration data area, and the security of the network core device also can be ensured without affecting the service. Similarly, the SBC answers the SS based on the IAD link detection mechanism of the core network device according to the record result in the SBC registration data area. Because an access network does not increase the traffic due to a large amount of link detection message from the SS, the loads of the access network device and the core network device are greatly relieved by adopting the technical scheme of the invention.
Description
Technical field
The present invention relates to the network communications technology field, relate in particular to the method and apparatus of communication link detection management in a kind of NGN network architecture.
Background technology
NGN (Next Generation Network, next generation network) being is core with the soft switch, multimedia integration business such as speech, video, data can be provided, adopt open, standard architecture, the next generation network of abundant business can be provided, be characterized in: the network that the standard-sized sheet of employing layering is put has independently modular construction; Be the network of business-driven, professional control with calling separated fully, calls out with carrying and separates fully; Be based on the network system of the grouping of uniform protocol.The content that NGN comprises is very extensive, from present case, aspect transmission infrastructure, refers to full light intelligent network; Refer to IPv6 (Internet Protocol Version 6, Next Generation Internet agreement) in IP (Internet Protocol, Internet protocol) network facet; Aspect the mobile network, refer to super 3G (3rd Generation, 3G (Third Generation) Moblie technology); Aspect business network, refer to soft switch etc.
SBC (Session Border Controller, Session Border Controller) as the edge device of core net and Access Network, responsibility is exactly in the future to IAD (Integrated Access Device, integrated access equipment) signaling is transmitted to SS (Soft Switch, software is changed planes), to be transmitted to corresponding IAD simultaneously from the signaling of SS, realize miscellaneous service.For the message of the big flow of this moment, if transmit, increase the load of core net, even can cause the paralysis of equipment of the core network SS, if do not transmit and can influence normal business.
Such class message is arranged on network, whether be used for equipment room detection communication link normal, for example, whether the link that equipment of the core network SS detected with IAD for the very first time in the NGN network architecture has unusually, can carry out link detecting in batches to all IAD equipment that it is served, SBC can transmit strictly according to the facts, like this, though this flow finally can be balanced on the different IAD, insert as a whole the side network flow can because a large amount of from SS link detection message and cause flow to increase.
Whether access network equipment IAD can send the link that link detecting message comes the very first time to detect itself and SS in the NGN network architecture has unusually, SBC can transmit strictly according to the facts, because each IAD has independently link detecting mechanism, so as long as SBC transparent transmission link detecting message, certainly will just cause the flow of core side network to increase, may cause the SS paralysis when serious.
In addition, the continuous increase of IAD in the NGN network architecture, and the continuous dilatation of equipment of the core network SS certainly will cause the flow of this message constantly to increase, bearing capacity for Access Network has had higher requirement, and the load of equipment of the core network SS is also in continuous increase simultaneously.Therefore, how under traffic affecting situation not, can also accomplish to guarantee the safety of equipment of the core network, become problem demanding prompt solution.
Summary of the invention
The technical problem to be solved in the present invention is, the method and apparatus that provides communication link in a kind of NGN network architecture to detect management can also be accomplished to guarantee the safety of equipment of the core network under traffic affecting situation not.
The technical solution used in the present invention is, communication link detects the method for management in the described NGN network architecture, comprise: detect and arrive software and change planes the link of SS when whether unusual when Access Network integrated access equipment IAD sends link detecting message to Session Border Controller SBC, SBC replys to IAD according to the record result in the SBC log-on data district based on self the link detecting mechanism to SS.
This method further comprises: whether unusual detect the link that arrives IAD when when SS sends link detecting message to SBC, SBC replys to SS according to the result who writes down in the SBC log-on data district based on self the link detecting mechanism to IAD.
Whether SBC: it is unusual to send the link that link detecting message detects between SBC and the SS when SBC opens if comprising the link detecting mechanism of SS, and with outcome record in SBC log-on data district.
Whether SBC: it is unusual to send the link that link detecting message detects between SBC and the IAD when SBC opens if comprising the link detecting mechanism of IAD, and with outcome record in SBC log-on data district.
As a kind of and technical scheme prior art compatibility, this method further comprises: when not writing down as a result in the SBC log-on data district, SBC gives IAD with the link detecting forwards that SS sends, and gives SS with the response forwards of IAD then; Give SS with the link detecting forwards that IAD sends, give IAD with the response forwards of SS then.
The present invention also provides the device of communication link detection management in a kind of NGN network architecture, comprising: IAD, and whether be used for detecting the link that arrives SS to SBC transmission link detecting message unusual;
SS, whether be used for detecting the link that arrives IAD to SBC transmission link detecting message unusual;
SBC is used for after receiving link detecting message, based on self the link detecting mechanism to SS and IAD, replys for IAD and SS according to the record result in the SBC log-on data district.
Described SBC comprises the link detecting mechanism of SS and IAD:
Whether send the link that link detecting message detects between SBC and the SS when SBC opens unusual, and with outcome record in SBC log-on data district;
Whether send the link that link detecting message detects between SBC and the IAD when SBC opens unusual, and with outcome record in SBC log-on data district.
As a kind of and technical scheme prior art compatibility, when not writing down as a result in the SBC log-on data district, described SBC is further used for, and gives IAD with the link detecting forwards that SS sends, and the response with IAD is transmitted to SS then; Give SS with the link detecting forwards that IAD sends, the response with SS is transmitted to IAD then.
Adopt technique scheme, the present invention has following advantage at least:
Communication link detects the method and apparatus of management in the NGN network architecture of the present invention, from how reducing SBC transparent transmission link detecting message this starts with on the one hand, when sending link detecting message to SBC, access network equipment IAD detects the link that arrives SS when whether unusual, SBC is based on self the link detecting mechanism to equipment of the core network SS, reply to IAD according to the record result in the SBC log-on data district, under traffic affecting situation not, can also accomplish to guarantee the safety of equipment of the core network.In like manner, when sending link detecting message to SBC, equipment of the core network SS detects the link that arrives IAD when whether unusual, SBC is based on self the link detecting mechanism to equipment of the core network IAD, reply to SS according to the result who writes down in the SBC log-on data district, can not cause flow to increase because of a large amount of link detection message owing to inserting the side network from SS, therefore, adopt technical scheme of the present invention, alleviated the load of Access Network and equipment of the core network greatly.
Description of drawings
Fig. 1 is the basic networking schematic diagram of the NGN network architecture;
Fig. 2 is the link detecting schematic diagram of mechanism of IAD to SS;
Fig. 3 is the link detecting schematic diagram of mechanism of SS to IAD;
Fig. 4 is the link detecting schematic diagram of mechanism of SBC to SS;
Fig. 5 is the link detecting schematic diagram of mechanism of SBC to IAD;
Fig. 6 is the method schematic diagram that communication link detects management in the described NGN network architecture of first embodiment of the invention;
Fig. 7 is the method schematic diagram that communication link detects management in the described NGN network architecture of second embodiment of the invention.
Embodiment
Reach technological means and the effect that predetermined purpose is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, communication link detects the method and apparatus of management in the described NGN network architecture that the present invention is proposed, describe in detail as after.
Be illustrated in figure 1 as the basic networking schematic diagram of the NGN network architecture.In the Access Network side, exist a large amount of access side device IAD to be connected to SBC by first switch 1.In core-network side, SBC is connected to equipment of the core network SS by second switch 2.Under this networking situation, there are four class link detecting mechanism: be respectively the link detecting of IAD, as shown in Figure 2 to SS; SS is to the link detecting of IAD, as shown in Figure 3; SBC is to the link detecting of SS, as shown in Figure 4; SBC is to the link detecting of IAD, as shown in Figure 5.This shows, for the message with the irrelevant link detecting of call business on the network is many, angle from SBC, for the very first time find between SBC and the SS and the Link State between SBC and the IAD equipment unusual, foregoing SBC is to trigger for link detecting, the SBC of SS for the link detecting mechanism of IAD.
First embodiment of the invention, as shown in Figure 6, communication link detects the method for management in a kind of NGN network architecture, comprises the steps:
Whether S101:IAD finishes after the registration Link State that can the periodic first heartbeat detection request message ServicechangeReq of transmission detects SS unusual, the first heartbeat detection request message ServicechangeReq is given to SBC by first switch 1, and the first heartbeat detection request message command type is Servicechange.
S102:SBC receives the first heartbeat detection request message ServicechangeReq from IAD, judge whether self carries out heartbeat detection to SS, if SBC carries out heartbeat detection based on self mechanism to SS, then the Link State according to the SS that writes down in the SBC log-on data district sends the first heartbeat detection response message ServicechangeRpl to IAD, and flow process finishes; If SBC do not carry out heartbeat detection to SS as yet, so SBC jump the Link State of SS for next can't perception, then the heartbeat detection request message with IAD directly passes through SS through second switch 2.
If the S103:SS Link State is not unusual, then can not send the first heartbeat detection response message ServicechangeRpl to SBC by second switch 2, unusual if the SS Link State exists, then may the echo reply error message or can not return any message.
S104:SBC is again with the first heartbeat detection response message ServicechangeRpl or reply error message and pass through IAD through first switch 1, IAD knows in view of the above whether the Link State of SS is unusual, perhaps, can know also that then the Link State of SS is unusual if IAD does not receive any response message within limited setting-up time.
S105:SBC self can do heartbeat detection to SS, and SBC sends the first heartbeat detection request message ServicechangeReq to SS, as shown in Figure 4.
S106: if SBC receives the first heartbeat detection response message ServicechangeRpl that SS sends, successful respond is described then, SBC can record the Link State normal information of SS in the local log-on data district.If SS does not reply or the echo reply error message, then SBC can record the Link State abnormal information of SS in the local log-on data district, is used for the first heartbeat detection request message ServicechangeReq of subsequent response from IAD.
Whether S107:IAD sends the Link State of first heartbeat detection request message ServicechangeReq detection SS once more unusual, and the first heartbeat detection request message ServicechangeReq is given to SBC by first switch 1.
After S108:SBC receives the first heartbeat detection request message ServicechangeReq from IAD, because SBC self has carried out heartbeat detection to SS, so search the link-state information of the SS that writes down in the log-on data district, reply processing to IAD, if that writes down in the local data district is the Link State normal information of SS, then directly replys first and detect response message ServicechangeRpl; If that writes down in the local data district is the Link State abnormal information of SS, that then replys first detects among the response message ServicechangeRpl and carries error code, is used for indicating the Link State of current SS unusual to IAD.
S109: when IAD receives the first detection response message ServicechangeRpl, think that the SS link can reach, when IAD receives the first detection response message ServicechangeRpl that carries error code, think that then the Link State of SS is unusual, follow-uply attempt registration SS again or switch on the standby SS of IAD configuration registering.
This shows, SBC is based on self the link detecting mechanism to equipment of the core network SS, a large amount of IAD equipment all can carry out detection to the Link State of SS through step S107～S109 in the NGN network architecture, network traffics from core-network side second switch 2, because the first heartbeat detection request message ServicechangeReq directly terminates on SBC, can not be forwarded to core net by SBC, so newly-increased flow is 0, reduce to the network traffics of core-network side greatly, reduced the load of equipment of the core network SS.
Second embodiment of the invention is shown as Fig. 7, and communication link detects the method for management in a kind of NGN network architecture, comprises the steps:
Whether the Link State that can periodically send second heartbeat detection request message AuditValueReq detection IAD after the S201:SS registration is unusual, the second heartbeat detection request message AuditValueReq is given to SBC by second switch 2, and heartbeat detection request message command type is AuditValue.
S202:SBC receives the second heartbeat detection request message AuditValueReq from SS, judge whether self carries out heartbeat detection to IAD, if SBC carries out heartbeat detection based on self mechanism to IAD, then the Link State according to the IAD that writes down in the SBC log-on data district sends the second detection response message AuditValueRpl to SS, and flow process finishes; If SBC do not carry out heartbeat detection to IAD as yet, so SBC jump the Link State of IAD for next can't perception, then the heartbeat detection request message with SS directly passes through IAD through first switch 1.
If the S203:IAD Link State is not unusual, then can send second to SBC and detect response message AuditValueRpl by first switch 1, unusual if the IAD Link State exists, then may the echo reply error message or can not return any message.
S204:SBC detects response message AuditValueRpl or replys error message second again and passes through SS through second switch 2, SS knows in view of the above whether the Link State of IAD is unusual, perhaps, can know also that then the Link State of IAD is unusual if SS does not receive any response message within limited setting-up time.
S205:SBC self can do heartbeat detection to IAD, and SBC sends the first heartbeat detection request message ServicechangeReq to IAD, as shown in Figure 5.
S206: if SBC receives the first heartbeat detection response message ServicechangeRpl that IAD sends, successful respond is described then, SBC can record the Link State normal information of IAD in the local log-on data district.If IAD does not reply or the echo reply error message, then SBC can record the Link State abnormal information of IAD in the local log-on data district, is used for the heartbeat detection request message of subsequent response from SS.
Whether S207:SS sends the Link State of second heartbeat detection request message AuditValueReq detection IAD once more unusual, and the second heartbeat detection request message AuditValueReq is given to SBC by second switch 2.
After S208:SBC receives the second heartbeat detection request message AuditValueReq from SS, because SBC self has carried out heartbeat detection to IAD, so search the Link State of the IAD that writes down in the log-on data district, reply processing to SS, if that writes down in the local data district is the Link State normal information of IAD, then directly replys second and detect response message AuditValueRpl; If that writes down in the local data district is the Link State abnormal information of IAD, that then replys second detects among the response message AuditValueRpl and carries error code, is used for to the Link State of SS indication current I AD unusual.
S209: when SS receives the second detection response message AuditValueRpl, think that the IAD link can reach, when SS receives the second detection response message AuditValueRpl that carries error code, think that then the Link State of IAD is unusual, follow-up SS is arranged to withdraw from service state with the login state of this IAD, and no longer carries out heartbeat detection and reenter service until IAD.
This shows, SBC is based on self the link detecting mechanism to access network equipment IAD, equipment of the core network SS can carry out the Link State of a large amount of access network equipment IAD is detected through step S207～S209 in the NGN network architecture, network traffics from Access Network side first switch 1, because the second heartbeat detection request message AuditValueReq directly terminates on SBC, can not be forwarded to Access Network by SBC, so newly-increased flow is 0, reduce to the network traffics of Access Network side greatly, reduced the load of Access Network side.
Third embodiment of the invention, as shown in Figure 1, communication link detects the device of management in a kind of NGN network architecture, comprising: access network equipment IAD, whether be used for detecting the link that arrives SS to SBC transmission link detecting message unusual;
Equipment of the core network SS, whether be used for detecting the link that arrives IAD to SBC transmission link detecting message unusual;
SBC is used for after receiving link detecting message, based on self the link detecting mechanism to equipment of the core network SS and equipment of the core network IAD, replys for IAD and SS according to the record result in the SBC log-on data district.SBC comprises the link detecting mechanism of equipment of the core network SS and equipment of the core network IAD:
Whether send the link that link detecting message detects between SBC and the SS when SBC opens unusual, and with outcome record in SBC log-on data district;
Whether send the link that link detecting message detects between SBC and the IAD when SBC opens unusual, and with outcome record in SBC log-on data district.
In the NGN network architecture of the present invention communication link detect management device can also with the prior art compatibility, be embodied in: when not writing down as a result in the SBC log-on data district, the link detecting forwards that SBC is further used for SS is sent is given IAD, and the response with IAD is transmitted to SS then; Give SS with the link detecting forwards that IAD sends, the response with SS is transmitted to IAD then.
Communication link detects the method and apparatus of management in the NGN network architecture of the present invention, from how reducing SBC transparent transmission link detecting message this starts with on the one hand, when sending link detecting message to SBC, access network equipment IAD detects the link that arrives SS when whether unusual, SBC is based on self the link detecting mechanism to equipment of the core network SS, reply to IAD according to the record result in the SBC log-on data district, under traffic affecting situation not, can also accomplish to guarantee the safety of equipment of the core network.In like manner, when sending link detecting message to SBC, equipment of the core network SS detects the link that arrives IAD when whether unusual, SBC is based on self the link detecting mechanism to equipment of the core network IAD, reply to SS according to the result who writes down in the SBC log-on data district, can not cause flow to increase because of a large amount of link detection message owing to inserting the side network from SS, therefore, adopt technical scheme of the present invention, alleviated the load of Access Network and equipment of the core network greatly.
By the explanation of embodiment, should be to reach technological means and the effect that predetermined purpose takes to be able to more deeply and concrete understanding to the present invention, yet appended diagram only provide with reference to the usefulness of explanation, be not to be used for the present invention is limited.
Claims (8)
1. communication link detects the method for management in the next generation network NGN network architecture, it is characterized in that, comprise: detect and arrive software and change planes the link of SS when whether unusual when Access Network integrated access equipment IAD sends link detecting message to Session Border Controller SBC, SBC replys to IAD according to the record result in the SBC log-on data district based on self the link detecting mechanism to SS.
2. detect the method for management according to communication link in the described NGN network architecture of claim 1, it is characterized in that, whether SBC: it is unusual to send the link that link detecting message detects between SBC and the SS when SBC opens if comprising the link detecting mechanism of SS, and with outcome record in SBC log-on data district.
3. detect the method for management according to communication link in the claim 1 or the 2 described NGN network architectures, it is characterized in that further comprising: detect the link that arrives IAD when whether unusual when SS sends link detecting message to SBC, SBC replys to SS according to the result who writes down in the SBC log-on data district based on self the link detecting mechanism to IAD.
4. detect the method for management according to communication link in the described NGN network architecture of claim 3, it is characterized in that, whether SBC: it is unusual to send the link that link detecting message detects between SBC and the IAD when SBC opens if comprising the link detecting mechanism of IAD, and with outcome record in SBC log-on data district.
5. detect the method for management according to communication link in the described NGN network architecture of claim 1, it is characterized in that further comprising: when not writing down as a result in the SBC log-on data district, SBC gives IAD with the link detecting forwards that SS sends, and gives SS with the response forwards of IAD then; Give SS with the link detecting forwards that IAD sends, give IAD with the response forwards of SS then.
6. communication link detects the device of management in the NGN network architecture, it is characterized in that, comprising: IAD, and whether being used for sending link detecting message to SBC, to detect the link that arrives SS unusual;
SS, whether be used for detecting the link that arrives IAD to SBC transmission link detecting message unusual;
SBC is used for after receiving link detecting message, based on self the link detecting mechanism to SS and IAD, replys for IAD and SS according to the record result in the SBC log-on data district.
7. detect the device of management according to communication link in the described NGN network architecture of claim 6, it is characterized in that described SBC comprises the link detecting mechanism of SS and IAD:
Whether send the link that link detecting message detects between SBC and the SS when SBC opens unusual, and with outcome record in SBC log-on data district;
Whether send the link that link detecting message detects between SBC and the IAD when SBC opens unusual, and with outcome record in SBC log-on data district.
8. detect the device of management according to communication link in the described NGN network architecture of claim 7, it is characterized in that when not writing down as a result in the SBC log-on data district, described SBC is further used for, give IAD with the link detecting forwards that SS sends, the response with IAD is transmitted to SS then; Give SS with the link detecting forwards that IAD sends, the response with SS is transmitted to IAD then.
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| CN200910169262.XA CN101997860B (en) | 2009-08-25 | 2009-08-25 | Method and device for communication link detection management in NGN network architecture |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103731314A (en) * | 2012-10-16 | 2014-04-16 | 中国移动通信集团公司 | Method, system and device for detecting communication service abnormal behavior |
| CN105517095A (en) * | 2014-09-25 | 2016-04-20 | 北京信威通信技术股份有限公司 | Relay routing method of session boundary controller |
| CN108712421A (en) * | 2018-05-18 | 2018-10-26 | 中国联合网络通信集团有限公司 | Method and device, soft switch method of calling and the system of access gateway registration |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1870689A (en) * | 2006-01-09 | 2006-11-29 | 华为技术有限公司 | Implement method and system for double-home of session boundary controller |
| US20070180141A1 (en) * | 2006-01-31 | 2007-08-02 | Saravanan Mallesan | Adaptive feedback for session over internet protocol |
| CN101426306A (en) * | 2008-10-24 | 2009-05-06 | 中国移动通信集团山东有限公司 | A disaster tolerance switching method, system and apparatus |
| EP2056574A1 (en) * | 2007-10-30 | 2009-05-06 | Nokia Siemens Networks Oy | Method for directing a data transmission through a network and communications network |
-
2009
- 2009-08-25 CN CN200910169262.XA patent/CN101997860B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1870689A (en) * | 2006-01-09 | 2006-11-29 | 华为技术有限公司 | Implement method and system for double-home of session boundary controller |
| US20070180141A1 (en) * | 2006-01-31 | 2007-08-02 | Saravanan Mallesan | Adaptive feedback for session over internet protocol |
| EP2056574A1 (en) * | 2007-10-30 | 2009-05-06 | Nokia Siemens Networks Oy | Method for directing a data transmission through a network and communications network |
| CN101426306A (en) * | 2008-10-24 | 2009-05-06 | 中国移动通信集团山东有限公司 | A disaster tolerance switching method, system and apparatus |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103731314A (en) * | 2012-10-16 | 2014-04-16 | 中国移动通信集团公司 | Method, system and device for detecting communication service abnormal behavior |
| CN105517095A (en) * | 2014-09-25 | 2016-04-20 | 北京信威通信技术股份有限公司 | Relay routing method of session boundary controller |
| CN108712421A (en) * | 2018-05-18 | 2018-10-26 | 中国联合网络通信集团有限公司 | Method and device, soft switch method of calling and the system of access gateway registration |
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