CN101102554B - Signaling forward device and method for signaling connection controller in No. 7 signaling system - Google Patents
Signaling forward device and method for signaling connection controller in No. 7 signaling system Download PDFInfo
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- CN101102554B CN101102554B CN2007101404110A CN200710140411A CN101102554B CN 101102554 B CN101102554 B CN 101102554B CN 2007101404110 A CN2007101404110 A CN 2007101404110A CN 200710140411 A CN200710140411 A CN 200710140411A CN 101102554 B CN101102554 B CN 101102554B
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Abstract
The invention is used for making the SCCP capable of processing the addressing operation with same destination GT address and different destination address. The method comprises: a) after receiving the signaling message needing to be routed, reading out the destination GT address and routing ID information from the signaling message; b) taking the destination GT address and said routing ID information as the combined key word to enquire the actual destination address corresponding to the key word; c) according to the actual destination address, relaying the signaling message to its corresponding signaling point. Said apparatus comprises: communication interface, route processing module, and route information database. Wherein, the route processing module is used for reading out the destination GT address and route ID information from the signaling message received through the communication interface; the route information database is used for saving the destination GT address and the corresponding relation between said route ID information and the actual destination address.
Description
Technical field
The present invention relates to telecommunication technology, be specifically related to GT (Global Title, global title) translation addressing technique among the Signaling System 7(SS-7) SCCP (Signaling Connectand Control Part, SCCP).
Background technology
In existing No7 signaling system, SCCP is according to reporting the purpose GT address choice actual purpose address in the signaling to carry out the signaling forwarding.
Along with enriching constantly of telecommunication service; Need to increase relevant service server in the telecommunications networking; Some call signaling (carrying purpose GT address) possibly at first need SCCP to forward it to service server; After service server and the processing of other network elements, call signaling (carrying above-mentioned purpose GT address) is forwarded to SCCP once more and carries out route, and existing SCCP then faces following problem: the signaling of carrying certain purpose GT address information is when reporting to SCCP for the first time; Need SCCP to be forwarded to certain purpose network element (possibly be certain service server) according to its address information; After this network element processing, the signaling of carrying above-mentioned identical purpose GT address information can report to SCCP by secondary, needs SCCP to forward it to other network elements.The purpose GT address information that reports for twice is identical, but the actual purpose address that needs for twice SCCP to transmit is different, and present addressing information is not enough to distinguish this type of addressing requirement, causes SCCP to transmit mistake.
With the application scenarios of opening number portability service is that example is described below:
As shown in Figure 1, suppose that a called number is that the Personal Handyphone System service number is carried to fixed network, call flows is following.
(step 1 IGW interconnects gateway; Interconnected GateWay) receives calling about this number (called number); Then with this number as DN (Subscriber Number; Directory number) sends SRI (routing inquiry message) to IPSTP (IP signaling transit point, IP Signalling TransferPoint);
Know after step 4 IGW receives that number is carried to fixed network, the calling of then sending this DN is to SS (soft switch, Soft Switch);
The forwards that step 6 IPSTP needs to carry this DN at this moment is to SHLR (SS HomeLocation Register, soft switch attaching position register).
Can know that by last description in step 2 and step 6, IPSTP will receive the message of carrying identical DN, but require IPSTP according to condition of different with forwards to different network elements, be NPServer for the first time, be SHLR for the second time.Because DN is identical, the result of GT translation has only one, or is NP Server, or is SHLR, can not realize DN is translated different network element devices but in the prior art.
Be mainly concerned with among the prior art IPSTP like lower module (as shown in Figure 2):
Communication interface, it comprises some physical interfaces, in order to connect different network elements, communicates with the external world;
The routing iinformation database is in order to the needed routing iinformation of storage addressing;
The route processing module is carried out the inquiry and the processing of routing iinformation according to the addressing information that reports.
Wherein the routing iinformation database configuration the relevant information of destination address, carry out addressing according to destination address, can only translate fixing network element by GT, can not realize above-mentioned requirements.
Summary of the invention
The technical problem that the present invention will solve provides signaling forward device and the method in a kind of Signaling System 7(SS-7) SCCP; Overcome the problem that SCCP can not be routed to identical purpose GT address the heterogeneous networks entity, make SCCP can processing intent GT identical but addressing operation that the actual purpose address is different.
In order to solve the problems of the technologies described above, the invention provides the signaling forwarding method of SCCP in a kind of Signaling System 7(SS-7), may further comprise the steps:
(a) receive the signaling message that needs route after, read purpose GT address and Route Distinguisher information in the said signaling message;
(b) with purpose GT address and said Route Distinguisher information as composite key, inquire about the corresponding actual purpose address of this keyword;
(c) according to the actual purpose address that inquires said signaling message is forwarded to corresponding signaling point.
Further; Said method also can have following characteristics, and said Route Distinguisher information is one or more of following information: the source office direction point coding of the GT address, source of said signaling message, network type, said signaling message, the SCCP Sub-System Number in the said signaling message called address.
Further, said method also can have following characteristics, in said step (a), receive the signaling message that needs route after, if the combination search switch is an opening, then continue execution in step (a).
Further, said method also can have following characteristics, and said combination search switch is configured in the database, is overall identification.
Further; Said method also can have following characteristics; In said step (b), the corresponding relation of purpose GT address, said Route Distinguisher information and actual purpose address has been preserved in the corresponding actual purpose address of this keyword of inquiry in the said database in database.
For solving the problems of the technologies described above, the present invention also provides the signaling forward device of SCCP in a kind of Signaling System 7(SS-7), comprises communication interface, route processing module, routing iinformation database, wherein:
Said communication interface is used to receive the signaling message that needs route, and said signaling message is delivered to said route processing module handle, and according to the indication of said route processing module said signaling message is sent to the actual purpose network element;
Said route processing module; Be used for reading the composite key of the signaling message that receives from said communication interface; Said composite key comprises purpose GT address and Route Distinguisher information; And said composite key inquired about said routing iinformation database as querying condition, and, indicate said communication interface that the signaling message of receiving is routed to the purpose network element according to the routing iinformation that said routing iinformation database returns;
Said routing iinformation database; Be used to preserve the corresponding relation between purpose GT address, said Route Distinguisher information and the actual purpose address; Carry out the coupling of routing iinformation according to the composite key of said route processing module input, and be that the corresponding actual purpose address of said composite key returns to said route processing module the routing iinformation that coupling obtains.
Further; Said apparatus also can have following characteristics, and said Route Distinguisher information is one or more of following information: the source office direction point coding of the GT address, source of said signaling message, network type, said signaling message, the SCCP Sub-System Number in the said signaling message called address.
Further; Said apparatus also can have following characteristics; After the route processing module also is used in and receives the signaling message that needs route from said communication interface; If judge that the combination search switch in the said routing iinformation database is an opening, then read purpose GT address and Route Distinguisher information in the said signaling message, otherwise only read purpose GT address.
Further, said apparatus also can have following characteristics, and said combination search switch is an overall identification.
Compared with prior art; The invention provides a kind of method that rationally, is easy to realize; Can realize easily that identical purpose GT address is to the addressing operation between the different actual purpose address; SCCP can realize addressing function more flexibly through configuration easily, thereby has enriched the business realizing means under the existing communication framework, the flexibility that has improved system.The present invention goes for having on any network element of signal switching function.
Description of drawings
Fig. 1 opens the forwards path sketch map in the number portability service application scenarios for prior art;
Fig. 2 is that prior art IPSTP functional module constitutes sketch map;
Fig. 3 is a present embodiment routing addressing flow chart.
Embodiment
The present invention carries out having proposed new method aspect the route of actual purpose address according to addressing information at SCCP.At first; Set the side information of an identification information as existing addressing purpose GT address; Purpose GT address and described side information as composite key, with actual purpose address information opening relationships, and are saved to above-mentioned relation in the routing iinformation database of SCCP.Like this, SCCP can carry out addressing operation according to purpose GT address and side information when carrying out the addressing routing operations of GT.
Purpose GT address might corresponding a plurality of actual purpose address, therefore need side information as Route Distinguisher information to distinguish the actual purpose address.Side information can adopt the source address of said signaling message; Also can be network type (being used for distinguishing is to heterogeneous networks such as Personal Handyphone System or telecommunications); It also can be the source office direction point coding (OriginatingPoint Code (OPC) Original Point Code in the routing tag of the mtp3 layer of incoming message) of message; Also can be the SSN in the called address in the said signaling message (SCCP Sub-System Number), or other information of from message, extracting.
Be that example describes to adopt source GT address information as the side information of purpose GT address below.Because other network elements need carry the sign of source GT address information as this network element when SCCP sends signaling message, therefore can be easily with the addressing side information of GT address, source as purpose GT address.GT address, selection source and purpose GT address combination as keyword after, set up this keyword with the corresponding relation between the actual purpose address, and this relation be saved in the routing iinformation database of SCCP.
The flow process of carrying out addressing operation specifically comprises the steps:
In addition; Consider compatible professional in the past needs; Can in the routing iinformation database of SCCP, adopt the combination search switch of an overall situation to indicate whether SCCP adopts the method for present embodiment elaboration to carry out addressing operation; If this sign is set to " being " then SCCP carries out addressing operation according to the method for present embodiment elaboration, if this sign is set to " denying " then carries out addressing operation according to prior art.Like this; Before above-mentioned steps 310-340, also has a step 300: judge whether that according to the combination search switch method that adopts present embodiment to set forth carries out addressing operation, if execution in step 310 then; Otherwise carry out addressing operation according to prior art, as shown in Figure 3.
The module of the IPSTP that relates in the present embodiment is following:
Communication interface is used to receive routing information request, and solicited message is forwarded to the route processing module, and according to the indication of route processing module said information is sent to the actual purpose network element;
The route processing module; Be used for reading the composite key of routing information request; Like purpose GT address and source GT address information; This composite key is inquired about as the querying condition input database, and, indicated communication interface that the message route of receiving is gone out according to the routing iinformation that database returns;
The route processing module also can be used for when receive the signaling message that needs route from said communication interface after; If judge that the combination search switch in the database is an opening; Then read purpose GT address and Route Distinguisher information in the said signaling message, otherwise only read purpose GT address;
The routing iinformation database; Wherein disposed the corresponding relation between purpose GT address, other Route Distinguisher information and the actual purpose address; Be used for carrying out the coupling of routing iinformation, and the routing iinformation (actual purpose network element address) that coupling obtains is returned to the route processing module according to the querying condition of route processing module input.
The present invention concentrates on the network element of being responsible for the message route the change of prior art, is easy to realize.And can carry out compatibility with prior art.
Certainly; The present invention also can have other various embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof; Those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
For example, except adopting the side information of a Route Distinguisher information, also can adopt a plurality of couplings to use as purpose GT address.
Claims (9)
1. the signaling forwarding method of SCCP in the Signaling System 7(SS-7) is characterized in that may further comprise the steps:
(a) receive the signaling message that needs route after, read purpose GT address and Route Distinguisher information in the said signaling message;
(b) with purpose GT address and said Route Distinguisher information as composite key, inquire about the corresponding actual purpose address of this keyword;
(c) according to the actual purpose address that inquires said signaling message is forwarded to corresponding signaling point.
2. the method for claim 1; It is characterized in that said Route Distinguisher information is one or more of following information: the source office direction point coding of the GT address, source of said signaling message, network type, said signaling message, the SCCP SCCP Sub-System Number in the said signaling message called address.
3. the method for claim 1 is characterized in that, in said step (a), receive the signaling message that needs route after, if the combination search switch is an opening, then continue execution in step (a).
4. method as claimed in claim 3 is characterized in that, said combination search switch is configured in the database, is overall identification.
5. the method for claim 1; It is characterized in that; In said step (b), the corresponding relation of purpose GT address, said Route Distinguisher information and actual purpose address has been preserved in the corresponding actual purpose address of this keyword of inquiry in the said database in database.
6. the signaling forward device of SCCP in the Signaling System 7(SS-7) comprises communication interface, route processing module, routing iinformation database, it is characterized in that:
Said communication interface is used to receive the signaling message that needs route, and said signaling message is delivered to said route processing module handle, and according to the indication of said route processing module said signaling message is sent to the actual purpose network element;
Said route processing module; Be used for reading the composite key of the signaling message that receives from said communication interface; Said composite key comprises purpose GT address and Route Distinguisher information; And said composite key inquired about said routing iinformation database as querying condition, and, indicate said communication interface that the signaling message of receiving is routed to the purpose network element according to the routing iinformation that said routing iinformation database returns;
Said routing iinformation database; Be used to preserve the corresponding relation between purpose GT address, said Route Distinguisher information and the actual purpose address; Carry out the coupling of routing iinformation according to the composite key of said route processing module input, and be that the corresponding actual purpose address of said composite key returns to said route processing module the routing iinformation that coupling obtains.
7. signaling forward device as claimed in claim 6; It is characterized in that said Route Distinguisher information is one or more of following information: the source office direction point coding of the GT address, source of said signaling message, network type, said signaling message, the SCCP SCCP Sub-System Number in the said signaling message called address.
8. signaling forward device as claimed in claim 6; It is characterized in that; The route processing module also is used for receive the signaling message that needs route from said communication interface after; If judge that the combination search switch in the said routing iinformation database is an opening, then read purpose GT address and Route Distinguisher information in the said signaling message, otherwise only read purpose GT address.
9. signaling forward device as claimed in claim 8 is characterized in that, said combination search switch is an overall identification.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007101404110A CN101102554B (en) | 2007-08-10 | 2007-08-10 | Signaling forward device and method for signaling connection controller in No. 7 signaling system |
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| CN2007101404110A CN101102554B (en) | 2007-08-10 | 2007-08-10 | Signaling forward device and method for signaling connection controller in No. 7 signaling system |
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| CN101102554B true CN101102554B (en) | 2012-01-11 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101257643B (en) * | 2008-01-15 | 2010-11-03 | 中兴通讯股份有限公司 | Method for realizing called global title transformation |
| CN101257516B (en) * | 2008-03-11 | 2011-07-13 | 中兴通讯股份有限公司 | Method for correcting source address |
| US8064455B2 (en) * | 2008-06-08 | 2011-11-22 | Apple Inc. | Outbound transmission of packet based on routing search key constructed from packet destination address and outbound interface |
| CN102164055A (en) * | 2011-02-23 | 2011-08-24 | 华为技术有限公司 | Detection processing method and device for signaling connection control part (SCCP) loop |
| CN103518402B (en) * | 2012-11-26 | 2017-04-12 | 华为技术有限公司 | Signal processing method, device and system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1315799A (en) * | 2000-03-30 | 2001-10-03 | 上海贝尔有限公司 | Method for implementing message shielding linkage control part of No.7 signaling system |
| CN1571543A (en) * | 2004-04-30 | 2005-01-26 | 中兴通讯股份有限公司 | A method for solving load sharing between signaling link groups in communication network |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1315799A (en) * | 2000-03-30 | 2001-10-03 | 上海贝尔有限公司 | Method for implementing message shielding linkage control part of No.7 signaling system |
| CN1571543A (en) * | 2004-04-30 | 2005-01-26 | 中兴通讯股份有限公司 | A method for solving load sharing between signaling link groups in communication network |
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