CN100426745C - Method for tracing oppsite end narrow-band signaling link break reson and broken state - Google Patents
Method for tracing oppsite end narrow-band signaling link break reson and broken state Download PDFInfo
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- CN100426745C CN100426745C CNB2005101275144A CN200510127514A CN100426745C CN 100426745 C CN100426745 C CN 100426745C CN B2005101275144 A CNB2005101275144 A CN B2005101275144A CN 200510127514 A CN200510127514 A CN 200510127514A CN 100426745 C CN100426745 C CN 100426745C
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Abstract
Being suitable to MTP2 narrowband signaling link, the method defines codes of broken chain cause, and expanding codes of broken chain cause; defining bits of broken chain cause, and expanding bits of broken chain cause; when broken chain occurs at MTP2 entity of this end, the method fills codes of broken chain cause to bits of broken chain cause, and infilling expanding codes to expanding bits, and sends them together with SIOS message to MTP2 entity at opposite end; after receiving SIOS message, MTP2 entity at opposite end takes out and analyzes bits of broken chain cause, and expanding bits of broken chain cause, and decodes broken chain cause and state, and reports them to MTP3 or OAM. When opposite end MTP2 entity occurs broken chain, this end can know cause and context information of broken chain at opposite end in order to take proper measures. The invention makes remote debugging enable so as to be in favor of quickening procedure for solving fault at remote end.
Description
Technical field
The present invention relates to the implementation method of No.7 signalling system, particularly relate to the method for state when 2 layers of message transfer part (Message Transfer Part 2) (hereinafter to be referred as MTP2) protocol layer is followed the tracks of opposite end narrow-band signaling link chain rupture reason and chain rupture.
Background technology
MTP2 is the link layer protocol of arrowband No.7 signalling system, and point-to-point reliable news transmission service is provided, and it has obtained extensive use, and its typical application protocol stack as shown in Figure 1.
The MTP2 narrow-band signaling link is working properly, be in the prerequisite that service state is all arrowbands No. seven top signaling protocol entities operate as normal.Therefore, in case the narrow-band signaling link chain rupture appears, the definite reason and the current state of the chain rupture of necessary location, thus take corresponding measure to solve.
Present MTP2 agreement (international communication standard agreement ITU-T Q.703) regulation, when chain rupture appears in narrow-band signaling link near-end MTP2 entity, can send to far-end MTP2 entity and withdraw from service message (hereinafter to be referred as SIOS message), and, trigger the corresponding chain rupture handling process of near-end MTP3 to 3 layers of near-end message transfer part (Message Transfer Part 3) (hereinafter to be referred as MTP3) report chain rupture incident.After far-end MTP2 entity is received SIOS message,, trigger the corresponding chain rupture handling process of far-end MTP3 to far-end MTP3 report chain rupture incident.
By above-described chain rupture handling process as can be seen, when chain rupture appears in near-end MTP2 entity, chain rupture reason and current state can be reported to near-end MTP3 or Operation and Maintenance platform (Operation And Maintenance) (hereinafter to be referred as OAM) easily, state when near-end top signaling protocol entity or webmaster can be recognized narrow-band signaling link chain rupture reason and chain rupture easily, thus take corresponding measure to solve.But, because the SIOS message in the MTP2 agreement does not have definition to deposit the field of chain rupture relevant information, far-end MTP2 entity can only be known near-end request chain rupture after receiving this SIOS message, and far-end MTP3 or OAM can't understand the definite reason and the current state of near-end chain rupture.Because in the networking applied environment of reality, the two ends of MTP2 narrow-band signaling link physically may be at a distance of remote, the chain rupture information of near-end may be difficult to obtain at far-end for the moment when chain rupture appearred in near-end MTP2 entity, if because some reason can only will influence the progress that problem solves in far-end analysis, location reason.This shows that remote debugging is a kind of necessary assist location means, but present MTP2 agreement also can't satisfy the needs of remote debugging, and not retrieve the patent and the document that can solve above-mentioned prior art problem at present as yet.
Summary of the invention
At the defective that exists in the above-mentioned background technology, the purpose of this invention is to provide a kind of method of state when following the tracks of opposite end narrow-band signaling link chain rupture reason and chain rupture, be applicable to the MTP2 narrow-band signaling link, make when opposite end MTP2 entity initiatively chain rupture occurs, can recognize the definite reason and the contextual information of opposite end chain rupture easily at local terminal, thereby take corresponding measure to solve, make remote debugging become possibility, help accelerating the progress that the far-end fault solves.
In order to achieve the above object, a kind of method of state when following the tracks of opposite end narrow-band signaling link chain rupture reason and chain rupture of the present invention is applicable to the MTP2 narrow-band signaling link, and this method comprises the steps:
Step 1: local terminal MTP2 substantial definition chain rupture reason coding and chain rupture reason extended coding;
Step 2: above-mentioned local terminal MTP2 entity defines chain rupture reason position and chain rupture reason extension bits in the SIOS of MTP2 agreement message;
Step 3: when chain rupture appears in above-mentioned local terminal MTP2 entity, chain rupture reason corresponding codes is inserted the chain rupture reason position of above-mentioned SIOS message, the extended coding of state or sub-reason correspondence is inserted chain rupture reason extension bits during with chain rupture, and it is sent to opposite end MTP2 entity with above-mentioned SIOS message; Wherein above-mentioned chain rupture reason corresponding codes is above-mentioned chain rupture reason coding, and the extended coding of state or sub-reason correspondence is above-mentioned chain rupture reason extended coding during above-mentioned chain rupture;
Step 4: after above-mentioned opposite end MTP2 entity is received above-mentioned SIOS message, take out and analyze wherein chain rupture reason position and chain rupture reason extension bits, the part that state or sub-reason are decoded as primitive or primitive during with above-mentioned chain rupture reason and chain rupture reports to opposite end MTP3 or OAM, and is handled by above-mentioned opposite end MTP3 or OAM.
Wherein, above-mentioned steps 1 comprises the steps:
Step 101: above-mentioned local terminal MTP2 entity be occur in the MTP2 agreement all possible, with the irrelevant chain rupture reason definition chain rupture reason coding of specific implementation;
Step 102: above-mentioned local terminal MTP2 entity judges whether above-mentioned chain rupture reason has only a kind of state, if then be the sub-reason definition chain rupture reason extended coding of this chain rupture reason; Otherwise, be all state definition chain rupture reason extended codings that occur under the above-mentioned chain rupture reason.
Above-mentioned steps 2 comprises the steps:
The SIOS message of above-mentioned local terminal MTP2 entity expansion MTP2 agreement, and idle domain therein (hereinafter to be referred as the Spare territory) definition chain rupture reason position and chain rupture reason extension bits.
Wherein be at least in the definition chain rupture reason position, Spare territory of above-mentioned SIOS message and the method for chain rupture reason extension bits:
User mode field (State Field) (hereinafter to be referred as SF) length is the SIOS message of 16bit, the low 1bit of its upper byte is defined as chain rupture reason position to 4bit, the low 5bit of its upper byte is defined as chain rupture reason extension bits to 7bit.
The method of state when adopting tracking provided by the invention opposite end narrow-band signaling link chain rupture reason and chain rupture, be applicable to the MTP2 narrow-band signaling link, can be when chain rupture appears in opposite end MTP2 entity, recognize the definite reason and the contextual information of opposite end chain rupture easily at local terminal, thereby take corresponding measure to solve, make remote debugging become possibility, help accelerating the progress that the far-end fault solves.
Below in conjunction with accompanying drawing, the concrete enforcement of the method for the invention is described in further detail.For those skilled in the art that, from the detailed description to the inventive method, above-mentioned and other purposes of the present invention, feature and advantage will be apparent.
Description of drawings
Fig. 1 is the location drawing of MTP2 agreement in the arrowband No.7 signalling system that the present invention relates to;
Fig. 2 is realization flow figure of the present invention;
Fig. 3 is a schematic diagram of in LSSU Link Status Signal Unit (Link StateSignal Unit) (hereinafter to be referred as LSSU) format chart, SIOS message definition figure and the step of stipulating in the MTP2 agreement that the present invention relates to 2 of the present invention the SIOS message of existing MTP2 agreement being expanded, defined in its Spare territory a kind of feasible program of chain rupture reason position and chain rupture reason extension bits.
Embodiment
Below in conjunction with embodiment and with reference to accompanying drawing technical scheme of the present invention is elaborated.
Fig. 2 is realization flow figure of the present invention, and as shown in Figure 2, a kind of method of state when following the tracks of opposite end narrow-band signaling link chain rupture reason and chain rupture of the present invention is applicable to the MTP2 narrow-band signaling link, may further comprise the steps:
Step 1: local terminal MTP2 entity be occur in the MTP2 agreement all possible, with the irrelevant chain rupture reason definition chain rupture reason coding of specific implementation; For state definition chain rupture reason extended coding possible under this chain rupture reason,, then be the sub-reason definition chain rupture reason extended coding of this chain rupture reason if this chain rupture reason has only a kind of possible state;
Wherein " all possible " requirement is any chain rupture reason of stipulating in the MTP2 agreement in order to follow the tracks of the integrality of opposite end chain rupture reason, can not omit; " irrelevant with specific implementation " requires is can be compatible when realizing for different manufacturers, for example " send buffer memory overflow cause chain rupture " should not be defined as independent chain rupture reason and encode, establish a capital the necessary in this case chain rupture of regulation because the MTP2 of different manufacturers realizes differing, encode to guarantee that chain rupture reason definition scheme can cover all possible chain rupture incident but this class chain rupture reason can be used as a kind of " other " chain rupture reason; A kind of concrete chain rupture reason of chain rupture reason coded representation, because the MTP2 entity has identical chain rupture reason under different conditions, the residing state of MTP2 entity is necessary to orientation problem when obtaining chain rupture takes place, and the residing state of MTP2 entity carries out extended coding in the time of therefore need taking place certain chain rupture reason; If this chain rupture reason has only a kind of possible state, can carry out extended coding to obtain more detailed concrete chain rupture reason to the sub-reason of this chain rupture reason; All possible in the existing MTP2 agreement that the present invention sums up, see Table 1 with irrelevant chain rupture reason and the extend information of specific implementation, provided a kind of feasible chain rupture reason coding and chain rupture reason extended coding scheme in the table 1 simultaneously;
Table 1
Step 2: the SIOS message of above-mentioned local terminal MTP2 entity expansion MTP2 agreement, therein definition chain rupture reason position, Spare territory and chain rupture reason extension bits;
SIOS message is a kind of of the LSSU that stipulates in the MTP2 agreement, and the LSSU format chart is shown in 3_1 part among Fig. 3, and SIOS message definition figure is shown in 3_2 part among Fig. 3; Because the SF field of LSSU exists the MTP2 agreement not define the Spare territory of concrete purposes, the present invention has defined chain rupture reason position and chain rupture reason extension bits in the Spare territory of SIOS message, the define method of wherein chain rupture reason position and chain rupture reason extension bits has multiple choices, and a kind of feasible define method that present embodiment adopts is shown in 3_3 part among Fig. 3; MTP2 agreement regulation, the SF field of LSSU can be 8bit or 16bit; Present embodiment has used the SIOS message of SF field length as 16bit, and the low 4bit of its upper byte is defined as chain rupture reason position (D4D3D2D1), and the 5bit of its upper byte is defined as chain rupture reason extension bits (D7D6D5) to 7bit;
Step 3: when chain rupture appears in local terminal MTP2 entity, chain rupture reason corresponding codes is inserted the chain rupture reason position of above-mentioned SIOS message, the extended coding of state or sub-reason correspondence is inserted chain rupture reason extension bits during with chain rupture, and it is sent to opposite end MTP2 entity with above-mentioned SIOS message;
Step 4: after above-mentioned opposite end MTP2 entity is received above-mentioned SIOS message, take out and analyze wherein chain rupture reason position and chain rupture reason extension bits, state decode is that the part of primitive or primitive reports to opposite end MTP3 or OAM during with above-mentioned chain rupture reason and chain rupture, and carries out respective handling by above-mentioned opposite end MTP3 or OAM.
In the above-mentioned flow process, step 1,2 is the preparatory stage of handling process of the present invention, and step 3,4 is the implementation phase of handling process of the present invention.
More than describe operation principle of the present invention in detail, but the example of this visualization of just lifting for the ease of understanding should not be considered to be limitation of the scope of the invention.Equally; the ordinary skill of technical field all can be according to the description of technical scheme of the present invention and preferred embodiment thereof under any; make various possible being equal to and change or replacement, but all these changes or replacement all should belong to the protection range of claim of the present invention.
Claims (4)
1, a kind of method of state when following the tracks of opposite end narrow-band signaling link chain rupture reason and chain rupture is applicable to 2 layers of narrow-band signaling link of message transfer part, it is characterized in that comprising the steps:
Step 1: local terminal message transfer part 2 layer entities definition chain rupture reason coding and chain rupture reason extended coding;
Step 2: above-mentioned local terminal message transfer part 2 layer entities are in the definition chain rupture reason position and the chain rupture reason extension bits in the service message of withdrawing from of message transfer part 2 layer protocols;
Step 3: when chain rupture appears in above-mentioned local terminal message transfer part 2 layer entities, chain rupture reason corresponding codes is inserted the above-mentioned chain rupture reason position of withdrawing from service message, the extended coding of state or sub-reason correspondence is inserted chain rupture reason extension bits during with chain rupture, and it is sent to opposite end message transfer part 2 layer entities with the above-mentioned service message that withdraws from; Wherein above-mentioned chain rupture reason corresponding codes is above-mentioned chain rupture reason coding, and the extended coding of state or sub-reason correspondence is above-mentioned chain rupture reason extended coding during above-mentioned chain rupture;
Step 4: above-mentioned opposite end message transfer part 2 layer entities receive above-mentioned withdraw from service message after, take out and analyze wherein chain rupture reason position and chain rupture reason extension bits, the part that state or sub-reason are decoded as primitive or primitive during with above-mentioned chain rupture reason and chain rupture reports to 3 layers of opposite end message transfer part or Operation and Maintenance platform, and is handled by 3 layers of above-mentioned opposite end message transfer part or Operation and Maintenance platform.
2, method according to claim 1 is characterized in that above-mentioned steps 1 comprises the steps:
Step 101: above-mentioned local terminal message transfer part 2 layer entities are all chain rupture reason definition chain rupture reason codings that occur in message transfer part 2 layer protocols;
Step 102: above-mentioned local terminal message transfer part 2 layer entities judge whether above-mentioned chain rupture reason has only a kind of state, if then be the sub-reason definition chain rupture reason extended coding of this chain rupture reason; Otherwise, be all state definition chain rupture reason extended codings that occur under the above-mentioned chain rupture reason.
3, method according to claim 1 is characterized in that above-mentioned steps 2 comprises the steps:
Above-mentioned local terminal message transfer part 2 layer entity extended message hops 2 layer protocols withdraw from service message, and definition chain rupture reason position of idle domain therein and chain rupture reason extension bits.
4, method according to claim 3 is characterized in that being at least in the method that the above-mentioned idle domain that withdraws from service message defines chain rupture reason position and chain rupture reason extension bits:
The user mode field length is the service message that withdraws from of 16bit, and the low 1bit of its upper byte is defined as chain rupture reason position to 4bit, and the low 5bit of its upper byte is defined as chain rupture reason extension bits to 7bit.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005101275144A CN100426745C (en) | 2005-12-05 | 2005-12-05 | Method for tracing oppsite end narrow-band signaling link break reson and broken state |
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| CNB2005101275144A CN100426745C (en) | 2005-12-05 | 2005-12-05 | Method for tracing oppsite end narrow-band signaling link break reson and broken state |
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| CN100426745C true CN100426745C (en) | 2008-10-15 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1168589A (en) * | 1996-04-04 | 1997-12-24 | 摩托罗拉公司 | Distributed signaling system seven call handling system |
| CN1285119A (en) * | 1997-12-30 | 2001-02-21 | 美国阿尔卡塔尔资源有限合伙公司 | High speed SS7 signaling adaptation device |
| JP2002208966A (en) * | 2001-01-12 | 2002-07-26 | Nec Commun Syst Ltd | System and method for containing isdn subscriber in mg containing uni |
| CN1471324A (en) * | 2002-07-26 | 2004-01-28 | 华为技术有限公司 | Method for realziing double-layer use adaption layer for seven-signalling network message transmission protocol |
| CN1486024A (en) * | 2002-09-28 | 2004-03-31 | 华为技术有限公司 | Method for implementing signaling link fault reason report |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1168589A (en) * | 1996-04-04 | 1997-12-24 | 摩托罗拉公司 | Distributed signaling system seven call handling system |
| CN1285119A (en) * | 1997-12-30 | 2001-02-21 | 美国阿尔卡塔尔资源有限合伙公司 | High speed SS7 signaling adaptation device |
| JP2002208966A (en) * | 2001-01-12 | 2002-07-26 | Nec Commun Syst Ltd | System and method for containing isdn subscriber in mg containing uni |
| CN1471324A (en) * | 2002-07-26 | 2004-01-28 | 华为技术有限公司 | Method for realziing double-layer use adaption layer for seven-signalling network message transmission protocol |
| CN1486024A (en) * | 2002-09-28 | 2004-03-31 | 华为技术有限公司 | Method for implementing signaling link fault reason report |
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