CN101217405B - SGSN backup method and communication system, communication device - Google Patents
SGSN backup method and communication system, communication device Download PDFInfo
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- CN101217405B CN101217405B CN2008100023633A CN200810002363A CN101217405B CN 101217405 B CN101217405 B CN 101217405B CN 2008100023633 A CN2008100023633 A CN 2008100023633A CN 200810002363 A CN200810002363 A CN 200810002363A CN 101217405 B CN101217405 B CN 101217405B
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Abstract
The embodiment of the invention discloses an SGSN backup method, comprising that the supporting point SGSN of a standby service GPRS is linked with a packet control unit PCU, and the configuration data of a primary SCSN is synchronized through a channel arranged between the primary SCSN; when a standby SGSN tests that the primary SGSN is in failure, a business processing is done to the business data transmitted by the PCU, according to synchronous configuration data; correspondingly, the embodiment of the invention provides a communication system and communication equipment, and the technical proposal provided by the embodiment of the invention can improve the reliability of the communication network with little alteration towards the present networks.
Description
Technical field
The present invention relates to communication technical field, be specifically related to the backup method of a kind of SGSN and communication system, communication equipment.
Background technology
GPRS (General Packet Radio Service, the conventional data Packet Service) business is a kind of at GSM (Global System for Mobile Communications, global system for mobile communications) wireless packet data service that provides on the service basic should business be extensive use of in the whole world at present.At present, the GPRS equipment network pattern of moving on the existing network all only supports a BSC (Base Station Contoller, base station controller) equipment to insert a unique service GPRS support node SGSN, provides service by this SGSN for BSC.In case for this BSC provides the SGSN fault of service, then BSC goes up all terminal MS users' that insert service disconnection, will cause a large number of users normally to use network, has a strong impact on the reliability of communication network.
Be head it off, 3GPP (The 3rd Generation Partnership Project, third generation partner program) tissue has defined the Gb-Flex agreement.Networking plan in this agreement needs a BSC to be connected with a plurality of SGSN in the POOL district, same pond, realizes backup functionality between a plurality of SGSN.Like this, even a SGSN breaks down, this BSC can also insert by other SGSN in the same POOL district.Because the probability of a plurality of SGSN simultaneous faultss is extremely low, as long as there is the SGSN of normal operating condition to exist, customer service just can continue.So just improved the reliability of communication network greatly.
In research and practice process to prior art, the inventor finds that there is following problem in prior art:
Networking plan in the Gb-Flex agreement that the 3GPP tissue proposes requires all existing network BSC to support new Gb-Flex standard to implement, but nearly all BSC of existing network operation at present can't support this technology, therefore to implement the networking plan in the Gb-Flex agreement, just must carry out network upgrade, comprise upgrading all BSC.Because PCU is arranged on the functional entity in the BSC, promptly need all PCU are upgraded, job costs that cause like this and workload will be very huge all, so, adopt the networking plan in the Gb-Flex agreement also infeasible with the reliability that realizes the raising communication network.
Summary of the invention
The technical problem that the embodiment of the invention will solve provides the backup method of a kind of SGSN and communication system, communication equipment, can be under the constant situation of the access network device function of existing network, promptly under the constant situation of the built-in function entity PCU of BSC function, realize the backup between the SGSN, improve the reliability of communication network.
For solving the problems of the technologies described above, embodiment provided by the present invention is achieved through the following technical solutions:
The embodiment of the invention provides the backup method of a kind of SGSN, comprise: standby service GPRS support node SGSN and grouping bag control unit PCU set up link, and by and main with the synchronous described main configuration data of the heartbeat passage that is provided with between the SGSN with SGSN, by and main with the forwarding passage forwarding business datum and the utilance information of interactive link and the message of congestion state that are provided with between the SGSN; When described standby SGSN detects described master and breaks down with SGSN,, the business datum of PCU transmission is carried out Business Processing according to described synchronous configuration data.
The embodiment of the invention provides a kind of communication system, comprises main with SGSN and standby SGSN; Described master is used for setting up link with PCU with SGSN, by and standby SGSN between the synchronous configuration data of heartbeat passage that is provided with; Described standby SGSN comprises a plurality of processing modules, and described processing module comprises link unit, the first set handling unit, fault processing unit and the second set handling unit; Described link unit is used for setting up link with PCU; The described first set handling unit is used at described standby SGSN and describedly main the heartbeat passage is set between with SGSN, by the synchronous described main configuration data with SGSN of described heartbeat passage, detects the running status of the corresponding main SGSN of using by described heartbeat passage; Described fault processing unit is used for detecting correspondingly main when breaking down with SGSN when the described first set handling unit, according to described synchronous configuration data, the business datum of PCU transmission is carried out Business Processing; The described second set handling unit, be used at described standby SGSN and describedly main the forwarding passage be set between with SGSN, described standby SGSN and described master with SGSN by described forwarding passage forwarding business datum and the utilance information of interactive link and the message of congestion state.
The embodiment of the invention provides a kind of communication equipment, comprises a plurality of processing modules, and described processing module comprises: link unit is used for setting up link with PCU; The first set handling unit is used at described communication equipment and main the heartbeat passage is set between with SGSN, by the synchronous described main configuration data with SGSN of described heartbeat passage, detects the running status of the corresponding main SGSN of using by described heartbeat passage; The second set handling unit, be used at described communication equipment and describedly main the forwarding passage be set between with SGSN, described communication equipment and described master with SGSN by described forwarding passage forwarding business datum and the utilance information of interactive link and the message of congestion state; Fault processing unit is used for detecting correspondingly main when breaking down with SGSN when the described first set handling unit, according to described synchronous configuration data, the business datum of PCU transmission is carried out Business Processing.
Technique scheme as can be seen, the embodiment of the invention is utilized standby SGSN and main with the mutual interlock between the SGSN, under the constant situation of the access network device function of existing network, promptly under the constant situation of the built-in function entity PCU of BSC function, be implemented in the backup between the SGSN, so improved the reliability of communication network.
Description of drawings
Fig. 1 is the backup method flow chart of embodiment of the invention SGSN;
Fig. 2 is the networking schematic diagram of embodiment of the invention scheme N+1 backup;
Fig. 3 is the standby SGSN of embodiment of the invention scheme and main with the course of work schematic diagram between the SGSN;
Fig. 4 is an embodiment of the invention communication system architecture schematic diagram;
Fig. 5 is an embodiment of the invention communication equipment structural representation.
Embodiment
The embodiment of the invention provides the backup method of a kind of SGSN, can improve the reliability of communication network under the situation of existing network being carried out less change.
The embodiment of the invention provides " N+1 " backup scenario." N+1 " notion of communication equipment generally is meant N host apparatus, public 1 stand-by equipment, and after certain host apparatus fault, stand-by equipment can be taken over business at once.Certainly, N also can be 1.The backup Disaster Tolerant Scheme of the embodiment of the invention, BSC equipment and transmission network that existing network is used do not have new functional requirement.In the embodiment of the invention scheme, provide backup functionality for N master with the business of SGSN by 1 standby SGSN, standby SGSN can detect main fault with SGSN automatically, main when breaking down when detecting with SGSN, can take over the business of main SGSN at once, shorten time of service interruption greatly, improved professional reliability.
Describe in detail below in conjunction with the backup method of accompanying drawing to embodiment of the invention SGSN.
Seeing also Fig. 1, is the backup method flow chart of embodiment of the invention SGSN, comprising:
Step 101, PCU (Packet Control Unit, grouping bag control unit) set up link with main with SGSN and standby SGSN respectively;
PCU is arranged on the functional entity in the BSC, sets up link with main with SGSN and standby SGSN respectively.
Step 102, standby SGSN by and main with the synchronous configuration data of the passage that is provided with between the SGSN;
Standby SGSN and main with passage is set between the SGSN, the passage by described setting is configured data synchronization, leads like this to need not to reload data when switching between SGSN and the standby SGSN.
Step 103, when described standby SGSN detects described master and breaks down with SGSN, according to described synchronous configuration data, the business datum of PCU transmission is carried out Business Processing.
When the passage of described standby SGSN by described setting detects described master and breaks down with SGSN, because be configured data synchronization before, then the state of oneself is switched to the main state of using, and according to having carried out synchronous configuration data with main with SGSN before, begin to take over the main SGSN bearer service of using, the business datum of PCU transmission is carried out Business Processing.
Seeing also Fig. 2, is the networking schematic diagram of embodiment of the invention scheme N+1 backup.
As shown in Figure 2, comprising: PCU1, PCU2....PCUn; Main with SGSN1, SGSN2...SGSNn, standby SGSN.Each PCU is connected with SGSN, standby SGSN with main, and standby SGSN is connected with the forwarding passage by the heartbeat passage with SGSN with each master.
Further seeing also Fig. 3, is the standby SGSN of embodiment of the invention scheme and main with the course of work schematic diagram between the SGSN.Fig. 3 is to be example with the 2+1 backup but to be not limited to this.
Fig. 3 comprises: PCU1, PCU2; Main with SGSN1, SGSN2, standby SGSN.Standby SGSN comprises a plurality of virtual SGSN processing modules, quantity can be determined according to main number with SGSN, be designated as Virtual SGSN (comprising Virtual SGSN1 and Virtual SGSN2) among the figure, corresponding main real-time running state of each virtual SGSN processing module monitoring with SGSN, copy has corresponding main configuration data with SGSN, and carry out synchronously with SGSN with main, mainly like this need not to reload data when switching between SGSN and the standby SGSN, directly can take over the business of leading with SGSN according to synchronous configuration data.Standby SGSN also can comprise the standby SGSN module of hard cutover, is used for when manually carrying out hard cutover as other main hard cutover backups with SGSN.
Main with setting up IP-based heartbeat passage between SGSN and the standby SGSN and transmitting passage.For reliability, heartbeat passage and forwarding passage can dispose many, and are based upon on a plurality of physical interfaces, in order to avoid a passage or an interface is unusual, causes inside to be judged automatically and make a mistake.
The TDM of each PCU (Time Division Multiplexing, time division multiplexing) link is divided into two parts (simple in order to describe, as can to think two) here, links main with SGSN and standby SGSN respectively.Show as in Fig. 2: link of PCU1 connects the main SGSN1, another link of using and connects Virtual SGSN1 among the standby SGSN; Link of PCU2 connects the main SGSN2, another link of using and connects Virtual SGSN2 among the standby SGSN.Because existing PCU generally has multilink to link a SGSN as redundancy backup, so this is satisfiable under the existing networking condition.
After the schematic construction of Fig. 3 carried out simple introduction, below introduce the processing method of SGSN N+1 backup in detail.
The master uses between SGSN, the standby SGSN by the instant synchronous running status each other of the heartbeat passage that is provided with.Main with coming failure judgement by the heartbeat message that monitoring opposite end SGSN sends between SGSN, the standby SGSN, to trigger corresponding actions.Main with the Manual Switch that provides on SGSN, the standby SGSN, and the feature operation of manual block and so on, also be synchronized to opposite end SGSN, the corresponding actions of triggering opposite end SGSN by the heartbeat passage.
Main using between SGSN, the standby SGSN also by synchronous mutually forwarding channel status, NSVC (the Network Service Virtual Connection each other of heartbeat passage, the Network virtual connections), NSE configuration informations such as (Network Service Entity, network service entities).SGSN N+1 backup functionality operate as normal, the master will be mated with the configuration data between SGSN, the standby SGSN.Because the configuration of data is more loaded down with trivial details, the possibility of makeing mistakes is bigger, therefore the SGSN of the embodiment of the invention provides synchronizing function (being that data configuration is verified function), SGSN N+1 backup functionality relevant configuration data are verified, with the configuration data of standby SGSN is main with the configuration data on the SGSN synchronously, it is professional impaired to avoid data collocation error to cause, can also be with the configuration data report and alarm of mistake.Data in synchronization mainly is the configuration data on the SGSN Gb Interface, and the configuration data of the forwarding passage relevant with backup functionality, and corresponding master should be consistent with the configuration data between SGSN, the standby SGSN.Here said synchronously, comprise synchronously periodic, and revise start that time-delay verifies that timer triggers after the configuration data synchronously.Concrete synchronous process is, main with sending the message that has comprised the configuration data structure mutually by the heartbeat passage between SGSN, the standby SGSN, receive an end of message, to after the message parse that receives and the comparison of the configuration data of local terminal, find inconsistent, synchronously be consistent configuration data then, also can produce event alarm simultaneously.
In the embodiment of the invention technical scheme, main with also being provided with the forwarding passage between SGSN, the standby SGSN.Under the situation of the normal operation of network, the upstream message of PCU (for example signaling, data etc.) can be carried out up transmission by being connected to main link with SGSN, also can carry out up transmission by the link that is connected to standby SGSN.But this moment, business was only carried out on leading with SGSN, and this just need use the forwarding channel function of the SGSN of setting.When the upstream message of PCU sent to standby SGSN, standby SGSN was transmitted to the master to upstream message and handles with SGSN by transmitting passage, and promptly standby SGSN processing forward do not handled.Equally, professional main handle on SGSN after, downstream message sends to PCU can be by main link with SGSN, also can be by the link of standby SGSN.If it is the link of having chosen standby SGSN that downstream message sends, then, be forwarded on the standby SGSN by main SGSN, by the descending PCU that sends to of the link of standby SGSN by transmitting passage.Transmit on the passage and also carried the utilance information of link and the message of congestion state.Main with between SGSN, the standby SGSN by the link utilization situation of judging integral body alternately of these message, finish the load sharing function of bottom link.If transmitted the channel status fault, main SGSN, the standby SGSN of using can pass through this class message perception.
According to the networking mode of the embodiment of the invention, under abnormal conditions, the master carries out respective handling with the corresponding different faults of SGSN, standby SGSN:
Break down with SGSN when standby SGSN detects the master by the heartbeat passage, standby SGSN takes over professional, and business is undertaken by standby SGSN.This situation is to have triggered auto switching.Be specially: standby SGSN is by the running status of heartbeat Channel Detection master with SGSN, when finding that the master promptly breaks down with the traffic handing capacity interruption of SGSN with SGSN master, the state of oneself is switched to main using, and according to having carried out synchronous configuration data with main with SGSN before, begin to take over the main SGSN bearer service of using, upstream data that sends for PCU or the downlink data that sends to PCU are all no longer transmitted, but are carried out Business Processing by oneself.Like this, standby SGSN has promptly taken over main business with SGSN, thereby it is minimum that time of service interruption is dropped to, and improved the reliability of communication network.
In addition, because the embodiment of the invention except that the heartbeat passage is set, also is provided with the forwarding passage, so break down and transmit passage just often with the heartbeat passage between SGSN, the standby SGSN when main, business is normally carried out, and is unaffected.Though this situation heartbeat passage breaks down, because it is normal to transmit passage, the business function of SGSN still can passage normally carries out by transmitting, and do not switch so do not trigger.
When main with the forwarding passage between SGSN, the standby SGSN break down and the heartbeat passage just often, business is normally carried out, and is unaffected.When this situation detects and transmits passage and break down, can not between two SGSN, transmit service message, but as long as main link with SGSN is also normal, business can be carried out normally still by transmitting passage.
When standby SGSN breaks down, professionally normally carry out with SGSN by main.Main do not receive the message of standby SGSN by the heartbeat passage in a period of time, think that then detecting standby SGSN has broken down, be equivalent to not have the situation of standby SGSN function this moment with SGSN.Main with the link normal process business of SGSN by oneself.
When PCU be connected to main with SGSN link and when being connected to link occurs fault in the link of standby SGSN, business is carried out from an other link.For example, when PCU was connected to the link down of the main SGSN of using, up-downgoing message was by standby SGSN transfer, detect own link down and downstream message is arranged with SGSN as main, just transmit by transmitting passage, by the descending transmission of the physical link of standby SGSN, thereby the business that guaranteed is not interrupted.
Foregoing describes the backup method of embodiment of the invention SGSN in detail, and corresponding, the embodiment of the invention provides a kind of communication system and communication equipment.
Seeing also Fig. 4, is embodiment of the invention communication system architecture schematic diagram.
Communication system comprises: main with SGSN 41, main with SGSN 42, standby SGSN 43.Need to prove, be that example describes but is not limited to this with two masters with SGSN just here.
Main use SGSN, is used for setting up link with PCU, by and standby SGSN 43 between the synchronous configuration data of passage of setting.
Standby SGSN 43, be used for setting up link with PCU, by and described main configuration data with the synchronous described main usefulness SGSN of the passage that is provided with between the SGSN, when detecting described master and break down with SGSN, according to described synchronous configuration data, the business datum of PCU transmission is carried out Business Processing.
Described standby SGSN 43 comprises a plurality of processing modules, illustrates with two processing modules 431 and 432 among Fig. 4 but is not limited to this.Each processing module comprises: link unit 4311, the first set handling unit 4312 and fault processing unit 4313.
The first set handling unit 4312, be used at described standby SGSN 43 and describedly main the heartbeat passage be set between with SGSN, by the synchronous described main configuration data of described heartbeat passage, detect corresponding main running status with SGSN by described heartbeat passage with SGSN.
Described processing module further comprises: the second set handling unit 4314.
The second set handling unit 4314 is used at described standby SGSN 43 and describedly main the forwarding passage is set between with SGSN, described standby SGSN 43 and described master with SGSN by described forwarding passage forwarding business datum.
Seeing also Fig. 5, is embodiment of the invention communication equipment structural representation.
Communication equipment comprises a plurality of processing modules, illustrates with two processing modules 431 and 432 among Fig. 5 but is not limited to this.Each processing module comprises: link unit 4311, the first set handling unit 4312 and fault processing unit 4313.Communication equipment described here is as standby SGSN.
The first set handling unit 4312 is used at described communication equipment and main the heartbeat passage is set between with SGSN, by the synchronous described main configuration data with SGSN of described heartbeat passage, detects the running status of the corresponding main SGSN of using by described heartbeat passage.
Described processing module further comprises: the second set handling unit 4314.
The second set handling unit 4314 is used at described communication equipment and between leading with SGSN the forwarding passage being set, and described communication equipment and described master transmit business datum with SGSN by described forwarding passage.
In sum, the embodiment of the invention is utilized standby SGSN and main with the mutual interlock between the SGSN, under the constant situation of the access network device function of existing network, promptly under the constant situation of the built-in function entity PCU of BSC function, be implemented in the backup between the SGSN, so improved the reliability of communication network.
Further, the embodiment of the invention is except that being provided with the heartbeat passage at standby SGSN with between leading with SGSN, the forwarding passage also is set, PCU and master can transmit by standby SGSN with the business datum between the SGSN like this, increase transmission path, further improved the reliability of communication network.
More than backup method and communication system, the communication equipment of a kind of SGSN that the embodiment of the invention provided is described in detail, for one of ordinary skill in the art, thought according to the embodiment of the invention, part in specific embodiments and applications all can change, in sum, this description should not be construed as limitation of the present invention.
Claims (6)
1. the backup method of a SGSN is characterized in that, comprising:
Standby service GPRS support node SGSN and grouping bag control unit PCU set up link, and by and main with the synchronous described main configuration data of the heartbeat passage that is provided with between the SGSN with SGSN, by and main with the forwarding passage forwarding business datum and the utilance information of interactive link and the message of congestion state that are provided with between the SGSN;
When described standby SGSN detects described master and breaks down with SGSN,, the business datum of PCU transmission is carried out Business Processing according to described synchronous configuration data.
2. the backup method of SGSN according to claim 1 is characterized in that:
The processing module that comprises among the described standby SGSN detects each corresponding main running status with SGSN.
3. the backup method of SGSN according to claim 1 is characterized in that:
Described standby SGSN and described master transmit business datum with SGSN by described forwarding passage and are specially:
Described standby SGSN receives the uplink business data that described PCU sends, and by described forwarding passage described uplink business data is transmitted to the described main SGSN that uses; Perhaps,
Described standby SGSN receives described master with the downlink service data that SGSN sends by described forwarding passage, and described downlink service data is sent to described PCU.
4. the backup method of SGSN according to claim 1 is characterized in that:
Described standby SGSN by and main be specially with the synchronous configuration data of the passage that is provided with between the SGSN: by setting-up time configuration data is carried out synchronously.
5. a communication system is characterized in that, comprises main with SGSN and standby SGSN;
Describedly main use SGSN, be used for setting up link with PCU, by and standby SGSN between the synchronous configuration data of heartbeat passage that is provided with;
Described standby SGSN comprises a plurality of processing modules, and described processing module comprises link unit, the first set handling unit, fault processing unit and the second set handling unit;
Described link unit is used for setting up link with PCU;
The described first set handling unit is used at described standby SGSN and describedly main the heartbeat passage is set between with SGSN, by the synchronous described main configuration data with SGSN of described heartbeat passage, detects the running status of the corresponding main SGSN of using by described heartbeat passage;
Described fault processing unit is used for detecting correspondingly main when breaking down with SGSN when the described first set handling unit, according to described synchronous configuration data, the business datum of PCU transmission is carried out Business Processing;
The described second set handling unit, be used at described standby SGSN and describedly main the forwarding passage be set between with SGSN, described standby SGSN and described master with SGSN by described forwarding passage forwarding business datum and the utilance information of interactive link and the message of congestion state.
6. a communication equipment is characterized in that, comprises a plurality of processing modules, and described processing module comprises:
Link unit is used for setting up link with PCU;
The first set handling unit is used at described communication equipment and main the heartbeat passage is set between with SGSN, by the synchronous described main configuration data with SGSN of described heartbeat passage, detects the running status of the corresponding main SGSN of using by described heartbeat passage;
The second set handling unit, be used at described communication equipment and describedly main the forwarding passage be set between with SGSN, described communication equipment and described master with SGSN by described forwarding passage forwarding business datum and the utilance information of interactive link and the message of congestion state;
Fault processing unit is used for detecting correspondingly main when breaking down with SGSN when the described first set handling unit, according to described synchronous configuration data, the business datum of PCU transmission is carried out Business Processing.
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| EP2487867B1 (en) * | 2011-02-09 | 2014-01-01 | Siemens Aktiengesellschaft | Keep alive message monitoring |
| CN104702684B (en) * | 2015-03-10 | 2019-01-08 | 新华三技术有限公司 | A kind of method of data synchronization and device |
| CN111405216B (en) * | 2019-10-25 | 2022-06-28 | 杭州海康威视系统技术有限公司 | Configuration method, device and equipment and storage medium |
| CN112732483A (en) * | 2020-12-31 | 2021-04-30 | 联想(北京)有限公司 | Data recovery method, device and system |
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| CN1691796A (en) * | 2004-04-30 | 2005-11-02 | 华为技术有限公司 | Communication load sharing system and method thereof |
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