CN101720101B - Method, system and number routing module for switching communication service - Google Patents
Method, system and number routing module for switching communication service Download PDFInfo
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Abstract
The invention discloses a method, a system and a number routing module for switching communication service. The method comprises the following steps: a number routing module detects a logical processing network element which establishes neighborhood with the number routing module; when communication service of the logic processing network element is detected to be abnormal, a number routing published by the logical processing network element is repealed, and the communication service is switched to the number routing published by a standby node of the logical processing network element. The invention can solve the defects of long communication service cutting time, low efficiency and multiple switching links in the prior art and has the beneficial effects of short cutting time, high switching efficiency and convenient switching link.
Description
Technical field
The present invention relates to the communications field, particularly, relate to method, system and number routing module that a kind of communication service is switched.
Background technology
(Telephone E.164NumberMapping in telephone number mapping, be called for short Enum) be to utilize domain name system (Domain Name System, be called for short DNS) mechanism, by the communication technology of E.164 number and the generic resource identifier based on DNS framework (Universal Resource Identifier is called for short URI) combination.Under international standard, in DNS system, increase a new domain name " e164.arpa ", deposit the URI of all kinds of resources, set up the E.164 mapping of number and accessible resource (comprising Phone, E-mail, FAX etc.), the approach that adopts telephone number accesses network resource is provided.
The inquiry of Enum adopts client-server end (Client-Server is called for short C/S) mode to carry out.Client can be positioned at multimedia news service center (Multimedia Message Service Center, be called for short MMSC), on the platform such as Wireless Application Protocol Gateway (Wireless Application Protoccl Gateway, be called for short WAP GW), Email (E-mail) system, valued added applications.By EnumDNS server, can realize multimedia message, personal information management (Personal Information Manager, be called for short PIM), Mobile Information Service Center (Mobile Information Service Center, be called for short MISC), mobile switching center/visitor location register (being MSC/VLR), attaching position register (Home Location Register, be called for short HLR), the route of the system such as Short Message Service Gateway (Internet Short Message Gateway, be called for short ISMG).
Fig. 1 is the schematic diagram that in prior art, multimedia message MM1 interface is realized route by EnumDNS server, as shown in Figure 1, comprising:
(1) user sends multimedia message to WAP GW;
(2) WAP GW is to the MMS center (Multimedia Messaging Service Center is called for short MMSC) of this multimedia message ownership of EnumDNS server lookup, and EnumDNS server returns to relevant information;
(3) WAP gateway, according to the route messages returning, sends to corresponding MMSC by multimedia message.
At present, according to the concentrated routing function of EnumDNS, only can realize the emergent manual cutover of operation system.For instance, when Beijing MMS center breaks down, mainly by network manager to its monitor, the mode such as customer complaint finds fault; By the data of manual modification EnumDNS, complete cutover by manual Beijing user's data by Beijing MMS center sensing backup MMS center; When Beijing user sends multimedia message again, WAP GW is by EnumDNS server lookup route, and the route messages of acquisition is backup MMS center, now multimedia message is sent to backup MMS center.
MSCNLR of the prior art, HLR, PIM, MISC, (the Tandem Mobile Switching Center of tandem mobile switching centre, be called for short TMSC), international switching center (International Switch Center, be called for short ISC), international signalling transfer point (International Signaling Transfer Point, be called for short ISTP) system, note system, international note system, MMS system, international MMS system, and/or all there is the problem that can not automatically switch in the logical processing network element based on number addressing such as WAP first page system.
Realizing in process of the present invention, inventor finds that in prior art, at least there are the following problems: 1. under existing flow process, main by outer monitoring or customer complaint, find as the fault of the client such as multimedia message, sms center, and by manual modification routing iinformation, realize the emergent manual cutover of operation system, therefore, the link that business is switched is more, and needs artificial participation; 2. in the time that equipment breaks down, the cut over time is long, efficiency is lower; 3. break down and routing iinformation while not carrying out manual modification in client, user's communication service meeting is affected.
Summary of the invention
The object of the invention is long for the cutover of the prior art time, efficiency is low, switch the defect that link is many, method, system and number routing module that a kind of communication service is switched are proposed, reduce time, the raising switching efficiency of cutover to realize, and simplify the object of switching link.
For achieving the above object, according to an aspect of the present invention, a kind of method that provides communication service to switch.The method comprises: number routing module pair is set up neighborhood logical processing network element with it detects; In the time detecting that the communication service of logical processing network element is abnormal, cancel the number route that logical processing network element is issued, communication service is switched to the number route that the secondary node of logical processing network element is issued; Wherein, described number routing module is set up to it logical processing network element that all and number of neighborhood is relevant by the MP-BGP agreement of expansion and is carried out cancelling of number, specifically comprises:
The Border Gateway Protocol MP-BGP that number routing module generates the expansion that comprises number routing information cancels route message;
Number routing module is cancelled route message by transmitting in IP network described in inciting somebody to action, and is sent to logical processing network element;
Described in logical processing network element receives and resolves, cancel route message, obtain number routing information, the described number routing information in routing table is deleted.
Preferably, technique scheme can also comprise: detect the abnormal logical processing network element of communication service; In the time that the abnormal logical processing network element of communication service is recovered proper communication business, the number route that receive logic processing net element is issued, switches back former logical processing network element by communication service.
Preferably, in technique scheme, the step that the logical processing network element of neighborhood of number routing module pair setting up with it detects can comprise: number routing module sends detect-message bag to logical processing network element according to the default time interval, and detects logical processing network element and whether return to corresponding response message; In the time not receiving response message corresponding to detect-message bag in set point number, decision logic processing net element is abnormal.
Preferably, in technique scheme, detect-message bag can be for adopting " keepalive " message of MP-BGP agreement.
Preferably, in technique scheme, number routing module can be set up the logical processing network element that all and number of neighborhood is relevant by the MP-BGP agreement of expansion and its and carry out distribution and the renewal of number.
For achieving the above object, according to a further aspect of the invention, provide a kind of number routing module.This module comprises: detection sub-module, for the logical processing network element of setting up neighborhood with it is detected; Process submodule, in the time detecting that the communication service of logical processing network element is abnormal, cancel the number route that logical processing network element is issued, communication service is switched to the number route of the secondary node issue of logical processing network element; Sub module stored, for carrying out cancelling of self number route by the MP-BGP agreement of expansion;
Described number routing module, also comprises: receiver module, for receiving the Border Gateway Protocol MP-BGP message of expansion; Parsing module, for the MP-BGP message of the expansion receiving is resolved, obtains number routing information, and a step is resolved the route that obtains described number; Processing module, at the message receiving when cancelling route message, by the described number routing information deletion in routing table.
Preferably, in technique scheme, number routing module can also comprise: recover submodule, be connected with detection sub-module, for in the time that the abnormal logical processing network element of communication service is recovered proper communication business, the number route that receive logic processing net element is issued, and communication service is switched back to former logical processing network element.
Preferably, in technique scheme, number routing module can also comprise: sub module stored, for carry out distribution and the renewal of self number route by the MP-BGP agreement of expansion, and receives the number route of the logical processing network element issue of setting up neighborhood with it.
Preferably, in technique scheme, number routing module can be arranged in MSC/VLR, HLR based on number addressing, ISC, ISTP, sms center, international sms center, Mobile Information Service Center, international MMS center, personal information management system in each logical processing network element.
For achieving the above object, according to another aspect of the present invention, the system that provides a kind of communication service to switch.This system comprises: one or more logical processing network element, for communicate the route of business by number routing module; Number routing module, for logical processing network element is detected, in the time detecting that the communication service of certain logical processing network element is abnormal, cancel the number route that logical processing network element is issued, and communication service is switched to the number route that the secondary node of logical processing network element is issued.
Preferably, in technique scheme, logical processing network element can be the network element based on number addressing arbitrarily such as MSC/VLR, TMSC, HLR, ISC, ISTP, note system, international note system, MMS system, international MMS system, Mobile Information Service Center system, personal information management system, WAP first page system.
Preferably, communication service can be to comprise the communication service based on number addressing arbitrarily such as local call, inter-provincial toll message, internal long distance call, note, international note, multimedia message, mobile message, international multimedia message, personal information management, WAP homepage.
Method, system and number routing module that the communication service of various embodiments of the present invention is switched, by increasing number routing function, the business of carrying out route by number routing module is monitored, in the time detecting that certain logical processing network element is abnormal, think that this node breaks down, cancel the route that this node is issued, be switched to the route that secondary node is issued; And can continue to detect to switching the logical processing network element of front service exception, in the time that this node recovers normal, carry out the switchback after fault, be switched to origin node, automatically recover business.The beneficial effect of various embodiments of the present invention comprises:
(1) can initiatively monitor the ruuning situation of carrying out the logical processing network element of route by number routing module;
(2) automatically carry out business switching, simplified switching link;
(3) the cut over time short, shortened to greatest extent service outage duration;
(4) improved switching efficiency.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, or understand by implementing the present invention.Object of the present invention and other advantages can be realized and be obtained by specifically noted structure in write specification, claims and accompanying drawing.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification, for explaining the present invention, is not construed as limiting the invention together with embodiments of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram that in prior art, multimedia message MM1 interface is realized route by expansion MP-BGP module;
Fig. 2 is embodiment mono-flow chart of the communication service changing method according to the present invention;
Fig. 3 is embodiment bis-flow charts of the communication service changing method according to the present invention;
Fig. 4 is the embodiment schematic diagram of the number routing module according to the present invention;
Fig. 5 is another embodiment schematic diagram of the number routing module according to the present invention;
Fig. 6 is the embodiment schematic diagram of the communication service switched system according to the present invention.
Mark the following drawings mark thereon by reference to the accompanying drawings:
302-arranges submodule; 304-detection sub-module; 306-processes submodule;
402-recovers submodule; 401-sub module stored.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein, only for description and interpretation the present invention, is not intended to limit the present invention.
embodiment mono-
Fig. 2 is embodiment mono-flow chart of the communication service changing method according to the present invention.As shown in Figure 2, the present embodiment comprises:
Step S102: number routing module pair is set up neighborhood logical processing network element with it detects;
Step S104: the logical processing network element of neighborhood is set up in judgement, and whether communication service is abnormal with it, if so, performs step S106; Otherwise, execution step S108;
Step S106: cancel the number route that this logical processing network element is issued, communication service is switched to the number route of the secondary node issue of this logical processing network element;
Step S108: flow process finishes.
After step S108, come back to step S102, number routing module continues the logical processing network element of setting up neighborhood with it to detect.Certainly, also can arrange after certain time interval and detect again.
The application for a patent for invention that the applicant of present patent application is 200810118760.7 at number of patent application provides a kind of number automatic routing method, update method, cancelling method, router and equipment.In 200810118760.7 patent application document, number automatic routing method is disclosed, by expansion MP-BGP (Multi-Protocol Border Gateway Protocol, be called for short MP-BGP), realize MP-BGP agreement support section routing function, as, can realize and support E.164 number section of route, E.214 and enterprises distribute service code (being SP code), thereby realize multimedia message, personal information management (Personal Information Manager, be called for short PIM), Mobile Information Service Center (Mobile Information Service Center, be called for short MISC), MSC/VLR, HLR, Short Message Service Gateway (Internet Short Message Gateway, be called for short ISMG) etc. the route of system.
The communication service changing method of the present embodiment is monitored the business of carrying out addressing by number routing module, in the time detecting that certain logical processing network element is abnormal, cancel the number route that this node is issued, be switched to the number route that secondary node is issued, automatically recovery business, can greatly simplify switching link, and shorten to greatest extent service outage duration, raising switching efficiency, guarantee the uninterrupted of business.
In the present embodiment, number routing module detects and processes a logical processing network element.In the middle of engineering practice, number routing module can also detect and process all logical processing network element of setting up neighborhood with it, and its step and the present embodiment are similar, no longer repeat herein.
In the present embodiment, logical processing network element can be to comprise the network element based on number addressing arbitrarily such as MSC/VLR, TMSC, HLR, ISC, ISTP, MISC, PIM, SMS gateway system, international SMS gateway system, MMS center system, international MMS gateway system or WAP first page system.
Communication service in the present embodiment is to comprise the communication service based on number addressing arbitrarily such as local call, inter-provincial toll message, internal long distance call, note, international note, multimedia message, mobile message, international multimedia message, personal information management and/or WAP homepage.
embodiment bis-
The present embodiment describes as an example of MMS example.The MMS system of the present embodiment comprises MMS center and international MMS gateway, number routing module using expansion MP-BGP module as MMS center and international MMS gateway, expansion MP-BGP module can dynamically send, receive, upgrade, delete, select, detect, replace number routing information, this number can be E.164, E.214, SP number or other number.The expansion MP-BGP module of MMS center and international MMS gateway sends mutually detect-message bag after setting up neighborhood, and detect-message bag can adopt " keepalive " message of MP-BGP agreement.For the sake of simplicity, detect international MMS gateway below describe as example take MMS center, vice versa.
Fig. 3 is embodiment bis-flow charts of the communication service changing method according to the present invention.As shown in Figure 3, the present embodiment comprises:
Step S202: the expansion MP-BGP module of MMS center sends " keepalive " message to international MMS gateway;
Step S204: under normal circumstances, back response " keepalive " message is to MMS center for the expansion MP-BGP module of international MMS gateway;
Step S206: the expansion MP-BGP module of MMS center is by the default time interval (being generally 60 seconds), or continue to send " keepalive " message by 1/3 retention time interval;
Step S208: the expansion MP-BGP module of MMS center continues to send 3 " keepalive " message always;
Step S210: if the expansion MP-BGP module of MMS center can not be received response " keepalive " message of returning, the expansion MP-BGP module of MMS center thinks that this world MMS gateway is abnormal, cancel the number route that this world MMS gateway is issued, enable the number route that the international MMS gateway of backup is issued, and business is switched to the international MMS gateway of backup, now, user sends multimedia message by international MMS gateway for subsequent use;
Step S212: the expansion MP-BGP module of MMS center continues to detect abnormal international MMS gateway;
Step S214: if can set up bgp neighbor relation with the international MMS gateway of service exception, receive the number route that this world MMS gateway is issued;
Step S216: the expansion MP-BGP module of MMS center thinks that this world MMS gateway recovers, according to the preferred route principle of bgp protocol, the number route of selecting this world MMS gateway (primary gateway) to issue, business switches back to this world MMS gateway.
In the present embodiment, the retention time claims again " holdtime ".Specifically: expansion MP-BGP module is sending after " keepalive " message, if do not receive the reply message of the logical processing network element of setting up neighborhood with it within the retention time, disconnect neighborhood with this logical processing network element, delete whole routes that this logical processing network element is issued, but the retention time can be set can not be less than 3 seconds.
The present embodiment describes as an example of MMS center and multimedia message international gateways example, the logical processing network element based on number addressing, system and the corresponding communication service arbitrarily for MSC/VLR, TMSC, HLR, ISC, ISTP, PIM, MISC, note system, international note system, MMS system, international MMS system and/or WAP first page system etc., can adopt the method for the present embodiment to realize the automatic switchover of communication service, and all should be encompassed in the middle of claim scope of the present invention.
embodiment tri-
Fig. 4 is the embodiment schematic diagram of the number routing module according to the present invention.As shown in Figure 4, the present embodiment comprises:
The corresponding relation of number routing module number storing and IP address, different communication services all needs to carry out addressing by number, and as ISDN User Part, (ISDN User Part is called for short
ISUP) called number in " IAM " message, in MAP signaling, HLR ID, MSC ID in animated walk-through number process are upgraded, obtained in authentication, position, the called number in transmission multimedia message, note etc.While carrying out the above-mentioned communication service relevant with number, can obtain the IP address that this number is corresponding by inquiry the present invention newly-increased number routing module in existing communication equipment.
The specific works process of processing submodule 306 and detection sub-module 304 in the present embodiment can, referring to the method and system embodiment in Fig. 2-Fig. 4, can realize same or similar beneficial effect, and concrete detection and processing procedure are no longer carried out repeat specification.
embodiment tetra-
Fig. 5 is another embodiment schematic diagram of the number routing module according to the present invention.The present embodiment, compared with Fig. 4, has also increased:
Recover submodule 402, be connected with detection sub-module 304 and processing submodule 306, for in the time detecting that the abnormal logical processing network element of communication service is recovered proper communication business, receive the number route that this logical processing network element is issued, and communication service is switched back to logical processing network element;
Sub module stored 401, for undertaken by the MP-BGP agreement of expansion self number route distribution, cancel and upgrade, and receive the number route of the logical processing network element issue of setting up neighborhood with it.
In the present embodiment, add recovery submodule, can be in the time occurring that abnormal logical processing network element returns to normal condition, again switch back original primary logical processing network element, thereby more optimized former technical scheme.
embodiment five
In the present embodiment, communication service is with MMS, and number routing module describes as an example of expansion MP-BGP module example.
Fig. 6 is the embodiment schematic diagram of the communication service switched system according to the present invention.As shown in Figure 6, native system is made up of a MMSC, the 2nd MMSC and WAP gateway.Wherein, a MMSC is user's ownership MMS center, comprises the first MMS center functional module and the first expansion MP-BGP module; The 2nd MMSC is the MMS center for subsequent use of a MMSC, comprises the second MMS center functional module and the second expansion MP-BGP module; WAP gateway comprises WAP gateway functional module and the 3rd expansion MP-BGP module.
Expansion MP-BGP module in the present embodiment in a MMSC, the 2nd MMSC, WAP GW detects mutually.In the present embodiment, for the sake of simplicity, take the 3rd in WAP GW expansion MP-BGP module, the one MMSC is detected as example, in the time that WAP GW detects that the communication service of a MMSC of user attaching is abnormal, the number route of the one MMSC is modified, communication service is switched to the 2nd MMSC.
In the time that user sends multimedia message to WAP GW, in WAP GW, WAP gateway functional module to the three expansion MP-BGP modules are inquired about the MMS center of this multimedia message ownership, the 3rd expansion MP-BGP module is returned to the route that the 2nd MMSC issues, WAP GW, according to the route messages returning, sends to the 2nd MMSC by multimedia message; In WAP GW the 3rd expansion MP-BGP module is by after number route handoff to the two MMSC, continue to detect an abnormal MMSC, if set up normal neighborhood with a MMSC, receive the number route that a MMSC issues, can switch back a MMSC.
In the present embodiment, the multimedia message that user sends should send by a MMSC, but the 3rd in WAP GW expansion MP-BGP module detects that a MMSC is when abnormal, by the route handoff to the of a MMSC two MMSC.Therefore, user can, directly by carrying out business transmission as the 2nd MMSC for subsequent use, not affect communication service.
In the present embodiment, the number routing function of the first expansion MP-BGP module, the second expansion MP-BGP module and the 3rd expansion MP-BGP module can be referring to Fig. 2-Fig. 3 embodiment of the method, and internal structure can be referring to the related description of the number routing module internal structure of Fig. 4-Fig. 5 embodiment.In addition, in the present embodiment, respectively expand MP-BGP module and can carry out each other state-detection and carry out subsequent treatment, specific implementation can be referring to the associated description of the present embodiment.
Below in the present embodiment by number routing module, automatic learning process and handoff procedure that the 3rd expansion MP-BGP module is carried out number route are elaborated.The user number section of supposing a MMSC ownership is that 8613911, IP address is 10.1.1.1.The 2nd MMSC home subscriber section is that 8613922, IP address is 10.1.1.2.Expansion MP-BGP module in the one MMSC and the 2nd MMSC is distributed to other neighbours by number route respectively.The number route that in WAP GW, the 3rd expansion MP-BGP module is obtained is as shown in table 1.
The number route that in table 1WAP GW, the 3rd expansion MP-BGP module is obtained
| Destination Mobile Station International ISDN Number | Next-hop ip address |
| 8613911 | 10.1.1.1 |
| 8613922 | 10.1.1.2 |
In order to realize the backup functionality of the 2nd MMSC to a MMSC, in the 2nd MMSC, configure in advance the number route 8613911 of a MMSC ownership, but the priority of this number route is lower.For example can be by revising MP-BGP " local preference ", attribute is adjusted the priority of number route, " the local preference " that on a MMSC, configure 8613911 number routes is 200, " the local preference " that on the 2nd MMSC, configure 8613911 number routes is 100, and " the local preference " that on the 2nd MMSC, configure 8613922 number routes is 200.The number route with priority that in WAP GW, the 3rd expansion MP-BGP module is obtained is as shown in table 2.
The number route with priority that in table 2WAP GW, the 3rd expansion MP-BGP module is obtained
| Destination Mobile Station International ISDN Number | Next-hop ip address | local preference |
| 8613911 | 10.1.1.1 | 200 |
| 8613922 | 10.1.1.2 | 200 |
| 8613911 | 10.1.1.2 | 100 |
In WAP GW, the 3rd expansion MP-BGP module can be according to BGP optimum principle, using the last item route in table 2 as route stand-by.Once the 3rd expansion MP-BGP module detects that a MMSC is abnormal, deletes a MMSC and issues number route 8613911, the number route 8613911 that the 2nd MMSC is issued is as preferred route.WAP GW just switches the 2nd MMSC by the MMS of a MMSC.The 3rd of WAP GW the expansion MP-BGP module continues to attempt setting up neighborhood with a MMSC simultaneously, once neighborhood is normal, WAP GW receives the number route 8613911 that a MMSC issues, WAP GW elects it as optimum route according to " local preference " attribute, and business switches back to a MMSC.
Due to " keepalive " message of bgp protocol configurable to second, three times unsuccessful just can switch, and therefore from finding that fault needs only 3 seconds to service switchover, and does not need manual intervention, the quick seamless handoff can automatically realize MMS center and break down time.
Above-mentioned just exemplifying communication service switched system, those of ordinary skills should understand, for being suitable for different business demands, any to MSC/VLR, TMSC, HLR, ISC, ISTP, MISC, note system, international note system, MMS system, international MMS system, personal information management system (PIM) and/or WAP first page system etc. multiple nodes based on number addressing can also be combined to the logical processing network element of switching as communication service of the present invention.Any communication system based on number addressing all can adopt method, system and the number routing module of the present embodiment to realize the switching of communication service, all should be within technical solution of the present invention scope required for protection.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can complete by the relevant hardware of program command, aforesaid program can be stored in computer read/write memory medium, this program, in the time carrying out, is carried out the step that comprises said method embodiment; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc, client, server or CDs.
Finally it should be noted that: the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although the present invention is had been described in detail with reference to previous embodiment, for a person skilled in the art, its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (13)
1. the method that communication service is switched, is characterized in that, comprising:
Number routing module pair detects to its relevant logical processing network element with number of setting up neighborhood;
In the time detecting that the communication service of described logical processing network element is abnormal, cancel the number route that described logical processing network element is issued, described communication service is switched to the number route that the secondary node of described logical processing network element is issued;
Wherein, the MP-BGP agreement pair of described number routing module by expansion set up to it logical processing network element that all and number of neighborhood is relevant and carried out cancelling of number, specifically comprises:
Number routing module is number routing information by number translated to be cancelled, comprise according to number to be cancelled and determine that the value of the AFI in MP_REACH_NLRI path attribute or MP_UNREACH_NLRI path attribute is address family value corresponding to number to be cancelled described in network layer address, the address prefix of determining NLRI in described MP_REACH_NLRI path attribute or MP_UNREACH_NLRI path attribute be described in number to be cancelled; The MP-BGP that generation comprises above-mentioned number routing information cancels route message;
Number routing module is cancelled route message by transmitting in IP network described in inciting somebody to action, and is sent to logical processing network element;
Described in logical processing network element receives and resolves, cancel route message, obtain number routing information, the described number routing information in routing table is deleted.
2. method according to claim 1, is characterized in that, also comprises:
Detect the abnormal logical processing network element of described communication service;
In the time that the abnormal logical processing network element of described communication service is recovered proper communication business, receive the number route that described logical processing network element is issued, described communication service is switched back to described logical processing network element.
3. method according to claim 1, is characterized in that, described logical processing network element is the network element based on number addressing, and described communication service is the communication service based on number addressing.
4. method according to claim 1, is characterized in that, described number routing module pair is set up the step that the logical processing network element of neighborhood detects and comprised with it:
Number routing module sends detect-message bag to described logical processing network element according to the default time interval, and detects described logical processing network element and whether return to corresponding response message;
In the time not receiving response message corresponding to described detect-message bag in set point number, judge that described logical processing network element is abnormal.
5. method according to claim 4, is characterized in that, described detect-message bag is " keepalive " message of MP-BGP agreement.
6. according to the method described in any one in claim 1-5, it is characterized in that, described number routing module is set up to it logical processing network element that all and number of neighborhood is relevant by the MP-BGP agreement of expansion and is carried out distribution and the renewal of number.
7. a number routing module, is characterized in that, comprising:
Detection sub-module, for detecting the logical processing network element of setting up neighborhood with it;
Process submodule, in the time detecting that the communication service of described logical processing network element is abnormal, cancel the number route that described logical processing network element is issued, described communication service is switched to the number route of the secondary node issue of described logical processing network element;
Sub module stored, for carrying out cancelling of self number route by the MP-BGP agreement of expansion;
Described number routing module, also comprises:
Receiver module, for receiving the Border Gateway Protocol MP-BGP message of expansion, described message comprises number routing information, wherein, the value of AFI in MP_REACH_NLRI path attribute or MP_UNREACH_NLRI path attribute is the address family value that network layer address number to be cancelled is corresponding, the address prefix of determining NLRI in described MP_REACH_NLRI path attribute or MP_UNREACH_NLRI path attribute be described in number to be cancelled;
Parsing module, for the Border Gateway Protocol MP-BGP message of the expansion receiving is resolved, according to the value of the AFI in described MP_REACH_NLRI path attribute or MP_UNREACH_NLRI path attribute, and the address prefix of NLRI obtains number routing information in described MP_REACH_NLRI path attribute or MP_UNREACH_NLRI path attribute, and further resolve the route that obtains described number;
Processing module, at the message receiving when cancelling route message, by the described number routing information deletion in routing table.
8. number routing module according to claim 7, is characterized in that, also comprises:
Recover submodule, be connected with described detection sub-module, for in the time that the abnormal logical processing network element of described communication service is recovered proper communication business, receive the number route that described logical processing network element is issued, and described communication service is switched back to described logical processing network element.
9. number routing module according to claim 7, it is characterized in that, described number routing module is arranged in MSC/VLR, HLR based on number addressing, ISC, ISTP, sms center, international sms center, Mobile Information Service Center, international MMS center, personal information management system.
10. according to the number routing module described in any one in claim 7-9, it is characterized in that, described sub module stored, also for carry out distribution and the renewal of self number route by the MP-BGP agreement of expansion, and receives the number route of the logical processing network element issue of setting up neighborhood with it.
11. 1 kinds of systems that communication service is switched, is characterized in that, comprise any one number routing module in claim 7-10, described number routing module is arranged in one or more logical processing network element:
Described one or more logical processing network element, for communicating the route of business by number routing module;
Described number routing module, for described logical processing network element is detected, in the time detecting that the communication service of certain logical processing network element is abnormal, cancel the number route that described logical processing network element is issued, and described communication service is switched to the number route of the secondary node issue of described logical processing network element.
12. systems according to claim 11, is characterized in that, described number routing module comprises:
Recover submodule, when recovering proper communication business to the abnormal logical processing network element of described communication service, receive the number route that described logical processing network element is issued, and described communication service is switched back to described logical processing network element.
13. according to the system described in claim 11 or 12, it is characterized in that, described logical processing network element is the network element based on number addressing.
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