CN101997860B - Method and device for communication link detection management in NGN network architecture - Google Patents
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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 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) be to take soft switch as core, the 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: adopt the network of the Full-open of layering, there is independently modular construction; Be the network of business-driven, business is completely separated with calling control, calls out completely separated with carrying; It is the network system of the grouping based on uniform protocol.The content that NGN comprises is very extensive, from present case, aspect transmission infrastructure, refers to full light intelligent network; In IP (Internet Protocol, Internet protocol) network facet, refer to IPv6 (Internet Protocol Version 6, Next Generation Internet agreement); Aspect 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), signaling from SS is transmitted to corresponding IAD simultaneously, realizes miscellaneous service.For the message of the large flow of this moment, if forwarded, increase the load of core net, even can cause the paralysis of equipment of the core network SS, if do not forward and can affect normal business.
On network, there is such class message, whether normally for equipment room, detect communication link, for example, in the NGN network architecture, whether equipment of the core network SS detected with the link of IAD and has extremely for the very first time, the all IAD equipment that can serve it carry out link detecting in batches, SBC can forward strictly according to the facts, like this, although it is upper that this flow finally can be balanced to different IAD, the flow that accesses as a whole side network can cause because of a large amount of link detection message from SS flow to increase.
In the NGN network architecture, whether access network equipment IAD can send link detecting message and come the link that the very first time detects itself and SS to have extremely, SBC can forward 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, when serious, may cause SS paralysis.
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 in 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 of communication link detection management in a kind of NGN network architecture is provided, and can also accomplish to guarantee the safety of equipment of the core network in traffic affecting situation not.
The technical solution used in the present invention is, the method of communication link detection management in the described NGN network architecture, comprise: when Access Network integrated access equipment IAD sends link detecting message to Session Border Controller SBC, detect and arrive software and change planes the link of SS when whether abnormal, SBC is the link detecting mechanism to SS based on self, according to the result that records in SBC log-on data district, to IAD, replys.
The method further comprises: when SS sends link detecting message to SBC, detect and arrive the link of IAD when whether abnormal, SBC is the link detecting mechanism to IAD based on self, according to the result recording in SBC log-on data district, to SS, replys.
SBC comprises the link detecting mechanism of SS: whether extremely when opening, SBC sends the link that link detecting message detects between SBC and SS, and by outcome record SBC log-on data district.
SBC comprises the link detecting mechanism of IAD: whether extremely when opening, SBC sends the link that link detecting message detects between SBC and IAD, and by outcome record SBC log-on data district.
As a kind of and technical scheme prior art compatibility, the method further comprises: while not recording result in DangSBC log-on data district, the link detecting message that SBC sends SS is transmitted to IAD, then the response message of IAD is transmitted to SS; The link detecting message that IAD is sent is transmitted to SS, then the response message of SS is transmitted to IAD.
The present invention also provides the device of communication link detection management in a kind of NGN network architecture, comprising: IAD, detects for send link detecting message to SBC whether arrive the link of SS abnormal;
SS, detects for send link detecting message to SBC whether arrive the link of IAD abnormal;
SBC, for after receiving link detecting message, the link detecting mechanism based on self to SS and IAD, replys to IAD and SS according to the result that records in SBC log-on data district.
Described SBC comprises the link detecting mechanism of SS and IAD:
Whether extremely, when opening, SBC sends the link that link detecting message detects between SBC and SS, and by outcome record SBC log-on data district;
Whether extremely, when opening, SBC sends the link that link detecting message detects between SBC and IAD, and by outcome record SBC log-on data district.
As a kind of and technical scheme prior art compatibility, while not recording result in DangSBC log-on data district, described SBC is further used for, and the link detecting message that SS is sent is transmitted to IAD, then the response of IAD is transmitted to SS; The link detecting message that IAD is sent is transmitted to SS, then the response of SS is transmitted to IAD.
Adopt technique scheme, the present invention at least has following advantages:
The method and apparatus of communication link detection 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 access network equipment IAD sends link detecting message to SBC, detect and arrive the link of SS when whether abnormal, SBC is the link detecting mechanism to equipment of the core network SS based on self, according to the result that records in SBC log-on data district, to IAD, reply, in traffic affecting situation not, can also accomplish to guarantee the safety of equipment of the core network.In like manner, when equipment of the core network SS sends link detecting message to SBC, detect and arrive the link of IAD when whether abnormal, SBC is the link detecting mechanism to equipment of the core network IAD based on self, according to the result recording in SBC log-on data district, to SS, reply, because access side network can not cause because of a large amount of link detection message from SS flow to increase, therefore, adopt technical scheme of the present invention, alleviated greatly the load of Access Network and equipment of the core network.
Accompanying drawing explanation
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 of communication link detection management in the NGN network architecture described in first embodiment of the invention;
Fig. 7 is the method schematic diagram of communication link detection management in the NGN network architecture described in second embodiment of the invention.
Embodiment
For further setting forth the present invention, reach technological means and the effect that predetermined object is taked, below in conjunction with accompanying drawing and preferred embodiment, in the described NGN network architecture that the present invention is proposed, the method and apparatus of communication link detection management, is described in detail as follows.
Be illustrated in figure 1 the basic networking schematic diagram of the NGN network architecture.In Access Network side, exist a large amount of access side device IAD to be connected to SBC by the first switch 1.In core-network side, SBC is connected to equipment of the core network SS by the second switch 2.In this networking situation, there are four class link detecting mechanism: be respectively the link detecting of IAD to SS, as shown in Figure 2; The link detecting of SS to IAD, as shown in Figure 3; The link detecting of SBC to SS, as shown in Figure 4; The link detecting of SBC to IAD, as shown in Figure 5.As can be seen here, for the message with the irrelevant link detecting of call business on network, be many, angle from SBC, for the very first time finds that the Link State between SBC and SS and between SBC and IAD equipment is abnormal, 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, in a kind of NGN network architecture, the method for communication link detection management, comprises the steps:
S101:IAD completes and can periodically send the first heartbeat detection request message ServicechangeReq after registration whether detect the Link State of SS abnormal, the first heartbeat detection request message ServicechangeReq is given to SBC by the 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, according to the Link State of the SS recording in SBC log-on data district, to IAD, send the first heartbeat detection response message ServicechangeRpl, flow process finishes; If SBC not yet carries out heartbeat detection to SS, SBC cannot perception for the Link State of down hop SS so, the heartbeat detection request message of IAD is directly passed through to SS through the second switch 2.
If S103:SS Link State is not abnormal, can to SBC, send the first heartbeat detection response message ServicechangeRpl by the second switch 2, abnormal if SS Link State exists, may return and reply error message or can not return any message.
S104:SBC is again by the first heartbeat detection response message ServicechangeRpl or reply error message and pass through IAD through the first switch 1, IAD knows that whether the Link State of SS is abnormal accordingly, if or IAD do not receive any response message within limited setting-up time, also can know that the Link State of SS is abnormal.
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, SBC can be recorded to the Link State normal information of SS in local log-on data district.If SS does not reply or returns and reply error message, SBC can be recorded to the Link State abnormal information of SS in local log-on data district, the first heartbeat detection request message ServicechangeReq for subsequent response from IAD.
Whether S107:IAD sends the Link State of the first heartbeat detection request message ServicechangeReq detection SS again abnormal, and the first heartbeat detection request message ServicechangeReq is given to SBC by the first switch 1.
S108:SBC receives after 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 recording in log-on data district, to IAD, carry out reply process, if what record in local data district is the Link State normal information of SS, directly reply the first detection response message ServicechangeRpl; If what record in local data district is the Link State abnormal information of SS, in the first detection response message ServicechangeRpl replying, carry error code, for indicate the Link State of current SS abnormal to IAD.
S109: when IAD receives the first detection response message ServicechangeRpl, think that SS link can reach, when IAD receives the first detection response message ServicechangeRpl that carries error code, think that the Link State of SS is abnormal, follow-uply again attempt registration SS or be switched on the standby SS of IAD configuration registering.
As can be seen here, SBC is the link detecting mechanism to equipment of the core network SS based on self, IAD equipment a large amount of in the NGN network architecture all can carry out the detection to the Link State of SS through step S107～S109, network traffics from core-network side the 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 new flow increasing is 0, reduce to greatly the network traffics of core-network side, reduced the load of equipment of the core network SS.
Second embodiment of the invention, as Fig. 7 shows, in a kind of NGN network architecture, the method for communication link detection management, comprises the steps:
Whether the Link State that can periodically send the second heartbeat detection request message AuditValueReq detection IAD after S201:SS registration is abnormal, the second heartbeat detection request message AuditValueReq is given to SBC by the 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, according to the Link State of the IAD recording in SBC log-on data district, to SS, send second and detect response message AuditValueRpl, flow process finishes; If SBC not yet carries out heartbeat detection to IAD, SBC cannot perception for the Link State of down hop IAD so, the heartbeat detection request message of SS is directly passed through to IAD through the first switch 1.
If S203:IAD Link State is not abnormal, can to SBC, send second by the first switch 1 and detect response message AuditValueRpl, abnormal if IAD Link State exists, may return and reply error message or can not return any message.
S204:SBC is again by the second detection response message AuditValueRpl or reply error message and pass through SS through the second switch 2, SS knows that whether the Link State of IAD is abnormal accordingly, if or SS do not receive any response message within limited setting-up time, also can know that the Link State of IAD is abnormal.
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, SBC can be recorded to the Link State normal information of IAD in local log-on data district.If IAD does not reply or returns and reply error message, SBC can be recorded to the Link State abnormal information of IAD in local log-on data district, the heartbeat detection request message for subsequent response from SS.
Whether S207:SS sends the Link State of the second heartbeat detection request message AuditValueReq detection IAD again abnormal, and the second heartbeat detection request message AuditValueReq is given to SBC by the second switch 2.
S208:SBC receives after 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 recording in log-on data district, to SS, carry out reply process, if what record in local data district is the Link State normal information of IAD, directly reply the second detection response message AuditValueRpl; If what record in local data district is the Link State abnormal information of IAD, in the second detection response message AuditValueRpl replying, carry error code, for abnormal to the Link State of SS indication current I AD.
S209: when SS receives the second detection response message AuditValueRpl, think that IAD link can reach, when SS receives the second detection response message AuditValueRpl that carries error code, think that the Link State of IAD is abnormal, follow-up SS is arranged to exit service state by the login state of this IAD, and no longer carries out heartbeat detection until IAD reenters service.
As can be seen here, SBC is the link detecting mechanism to access network equipment IAD based on self, in the NGN network architecture, equipment of the core network SS can carry out the Link State of a large amount of access network equipment IAD to detect through step S207～S209, network traffics from Access Network side the 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 new flow increasing is 0, reduce to greatly the network traffics of Access Network side, reduced the load of Access Network side.
Third embodiment of the invention, as shown in Figure 1, the device of communication link detection management in a kind of NGN network architecture, comprising: access network equipment IAD, detects for send link detecting message to SBC whether arrive the link of SS abnormal;
Equipment of the core network SS, detects for send link detecting message to SBC whether arrive the link of IAD abnormal;
SBC, for after receiving link detecting message, the link detecting mechanism based on self to equipment of the core network SS and equipment of the core network IAD, replys to IAD and SS according to the result that records in 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 extremely, when opening, SBC sends the link that link detecting message detects between SBC and SS, and by outcome record SBC log-on data district;
Whether extremely, when opening, SBC sends the link that link detecting message detects between SBC and IAD, and by outcome record SBC log-on data district.
In the NGN network architecture of the present invention, the device of communication link detection management can also be compatible with prior art, be embodied in: while not recording result in DangSBC log-on data district, the link detecting message that SBC is further used for SS to send is transmitted to IAD, then the response of IAD is transmitted to SS; The link detecting message that IAD is sent is transmitted to SS, then the response of SS is transmitted to IAD.
The method and apparatus of communication link detection 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 access network equipment IAD sends link detecting message to SBC, detect and arrive the link of SS when whether abnormal, SBC is the link detecting mechanism to equipment of the core network SS based on self, according to the result that records in SBC log-on data district, to IAD, reply, in traffic affecting situation not, can also accomplish to guarantee the safety of equipment of the core network.In like manner, when equipment of the core network SS sends link detecting message to SBC, detect and arrive the link of IAD when whether abnormal, SBC is the link detecting mechanism to equipment of the core network IAD based on self, according to the result recording in SBC log-on data district, to SS, reply, because access side network can not cause because of a large amount of link detection message from SS flow to increase, therefore, adopt technical scheme of the present invention, alleviated greatly the load of Access Network and equipment of the core network.
By the explanation of embodiment, should be to reach technological means and the effect that predetermined object takes to be able to more deeply and concrete understanding to the present invention, yet appended diagram be only to provide with reference to the use with explanation, be not used for the present invention to be limited.
Claims (5)
1. the method for communication link detection management in a next generation network network architecture, it is characterized in that, comprise: when Access Network integrated access equipment IAD sends link detecting message to Session Border Controller SBC, detect and arrive software and change planes the link of SS when whether abnormal, SBC is the link detecting mechanism to SS based on self, according to the result that records in SBC log-on data district, to IAD, replys;
SBC comprises the link detecting mechanism of SS: whether extremely when opening, SBC sends the link that link detecting message detects between SBC and SS, and by outcome record SBC log-on data district.
2. the method for communication link detection management in the NGN network architecture according to claim 1, it is characterized in that further comprising: when SS sends link detecting message to SBC, detect and arrive the link of IAD when whether abnormal, SBC is the link detecting mechanism to IAD based on self, according to the result recording in SBC log-on data district, to SS, replys;
SBC comprises the link detecting mechanism of IAD: whether extremely when opening, SBC sends the link that link detecting message detects between SBC and IAD, and by outcome record SBC log-on data district.
3. the method for communication link detection management in the NGN network architecture according to claim 1, it is characterized in that further comprising: while not recording result in DangSBC log-on data district, the link detecting message that SBC sends SS is transmitted to IAD, then the response message of IAD is transmitted to SS; The link detecting message that IAD is sent is transmitted to SS, then the response message of SS is transmitted to IAD.
4. a device for communication link detection management in the NGN network architecture, is characterized in that, comprising: IAD, detects for send link detecting message to SBC whether arrive the link of SS abnormal;
SS, detects for send link detecting message to SBC whether arrive the link of IAD abnormal;
SBC, for after receiving link detecting message, the link detecting mechanism based on self to SS and IAD, replys to IAD and SS according to the result that records in SBC log-on data district;
Described SBC comprises the link detecting mechanism of SS and IAD:
Whether extremely, when opening, SBC sends the link that link detecting message detects between SBC and SS, and by outcome record SBC log-on data district;
Whether extremely, when opening, SBC sends the link that link detecting message detects between SBC and IAD, and by outcome record SBC log-on data district.
5. the device of communication link detection management in the NGN network architecture according to claim 4, it is characterized in that, while not recording result in DangSBC log-on data district, described SBC is further used for, the link detecting message that SS is sent is transmitted to IAD, then the response of IAD is transmitted to SS; The link detecting message that IAD is sent is transmitted to SS, then the response of SS is transmitted to IAD.
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| 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 |
| CN108712421B (en) * | 2018-05-18 | 2021-04-27 | 中国联合网络通信集团有限公司 | Method and device for access gateway registration, softswitch calling method and system |
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| 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 |
| 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 |
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| 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 |
| 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 |
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