WO1999059349A1 - Verfahren zur signalisierung in einem signalisierungstransferpunkt - Google Patents
Verfahren zur signalisierung in einem signalisierungstransferpunkt Download PDFInfo
- Publication number
- WO1999059349A1 WO1999059349A1 PCT/EP1999/003048 EP9903048W WO9959349A1 WO 1999059349 A1 WO1999059349 A1 WO 1999059349A1 EP 9903048 W EP9903048 W EP 9903048W WO 9959349 A1 WO9959349 A1 WO 9959349A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- signaling
- messages
- loop
- sent
- destination
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/0016—Arrangements providing connection between exchanges
- H04Q3/0025—Provisions for signalling
Definitions
- Loops with a length> 2 are more difficult to recognize. For each message in a particular STP, one can check whether this message originates from this particular STP 2
- STPs do not necessarily generate messages or messages to the target or targets to which there is a loop.
- This problem can be solved by a real-time method that uses the possibility of a loop, e.g. through permanent overload on a link set, can be recognized, solved. If the method mentioned recognizes the possibility of a loop, this can be solved. If the method mentioned recognizes the possibility of a loop, this can be solved.
- MTP route implementation test Another solution to the problem is defined by the standard (Q.753, Q.754), the so-called MTP route implementation test (MRVT), which checks all possible paths in an MTP network between two given points for correctness, including freedom from loops. If errors occur, e.g. Grinding, the operating personnel are informed to initiate corrections.
- the MRVT has the advantage over a real-time method that it can also recognize loops before they are actually used, since all possible paths are checked, not just the current ones.
- the disadvantage is that a separate protocol is required for this. If this is not implemented in the entire network, the check is not possible or only incompletely. This situation exists especially in the international signaling network.
- the MRVT cannot continuously check all paths between all points in the network.
- the invention has for its object to overcome the disadvantages mentioned above.
- the present invention shows in particular how, when real-time detection of loops with a length> 2 and / or when loops are detected by the MRVT, automatic, real-time, protocol-compatible and easy to implement methods can be used to break through the loops. This means that the time until the operator intervenes can be bridged.
- the MRVT does not provide any information as to whether a possible loop is currently being used and the real-time method may not be able to make any statement about the destination to which a possible loop exists.
- the aforementioned checking is carried out by sending otherwise unused MTP network management messages to the destinations that can currently be reached via the link set in question (according to the routing). If such test messages return to the STP, these messages are discovered by comparing the OPC contained in the message with the point code of the STP, and one or more loops are recognized. Corrective measures can thus remain limited to the loops currently in use.
- the loop "upstream”, ie to the previous STP B on the loop, can be interrupted by A to B sending a Transfer Prohibited message regarding X. B will then redirect or stop traffic to X. Since B will then periodically check the availability of the route to X via A using the so-called route set test messages to A, it must be ensured that A does not answer these messages with a transfer allowed, otherwise B will close the loops again could. 5
- the actions performed automatically by the MTP or the Operations Maintenance and Administration Part (OMAP) can be canceled again by the operating personnel (note: OMAP includes higher-level SS7 management functions, e.g. MRVT, screening functions and measurements. "Informing the operating personnel" is (partly) part of the OMAP).
- a special feature of the invention lies in the mechanism for breaking through the loops with a length of> 2 by means of automatic measures that are easy to implement, using existing protocol features.
- the method can already be used and is useful if it is only implemented in a single STP.
- ILS incoming linkset
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Computer And Data Communications (AREA)
- Maintenance And Management Of Digital Transmission (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99920848A EP1078536A1 (de) | 1998-05-12 | 1999-05-04 | Verfahren zur signalisierung in einem signalisierungstransferpunkt |
CA002331706A CA2331706A1 (en) | 1998-05-12 | 1999-05-04 | Method for signaling in a signaling transfer point |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98108645 | 1998-05-12 | ||
EP98108645.7 | 1998-05-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999059349A1 true WO1999059349A1 (de) | 1999-11-18 |
Family
ID=8231919
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1999/003048 WO1999059349A1 (de) | 1998-05-12 | 1999-05-04 | Verfahren zur signalisierung in einem signalisierungstransferpunkt |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1078536A1 (de) |
CN (1) | CN1300507A (de) |
CA (1) | CA2331706A1 (de) |
WO (1) | WO1999059349A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008113298A1 (fr) * | 2007-03-22 | 2008-09-25 | Huawei Technologies Co., Ltd. | Procédé, équipement et système pour un routage dans un réseau organisé entre des points de transit à double signalisation et des éléments de réseau interdépendants |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101155062B (zh) * | 2006-09-30 | 2012-10-03 | 华为技术有限公司 | 一种解决信令网异常的方法、装置及系统 |
CN102164055A (zh) * | 2011-02-23 | 2011-08-24 | 华为技术有限公司 | 一种sccp环路的检测处理方法及装置 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5553058A (en) * | 1995-07-10 | 1996-09-03 | Telefonaktiebolaget Lm Ericsson | Centralized load minimizing method for periodical routing verification tests scheduling |
US5583848A (en) * | 1994-11-15 | 1996-12-10 | Telefonaktiebolaget L M Ericsson | Methods for verification of routing table information |
US5638357A (en) * | 1995-08-25 | 1997-06-10 | Telefonaktiebolaget Lm Ericsson (Publ) | Distributed method for periodical routing verification test scheduling |
-
1999
- 1999-05-04 EP EP99920848A patent/EP1078536A1/de not_active Withdrawn
- 1999-05-04 CN CN 99806124 patent/CN1300507A/zh active Pending
- 1999-05-04 CA CA002331706A patent/CA2331706A1/en not_active Abandoned
- 1999-05-04 WO PCT/EP1999/003048 patent/WO1999059349A1/de not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5583848A (en) * | 1994-11-15 | 1996-12-10 | Telefonaktiebolaget L M Ericsson | Methods for verification of routing table information |
US5553058A (en) * | 1995-07-10 | 1996-09-03 | Telefonaktiebolaget Lm Ericsson | Centralized load minimizing method for periodical routing verification tests scheduling |
US5638357A (en) * | 1995-08-25 | 1997-06-10 | Telefonaktiebolaget Lm Ericsson (Publ) | Distributed method for periodical routing verification test scheduling |
Non-Patent Citations (2)
Title |
---|
GLITHO R H: "ISOLATING FAULTY ROUTING TABLES IN SS7 NETWORKS: PRESENT AND FUTURE", IEEE COMMUNICATIONS MAGAZINE, vol. 34, no. 5, 1 May 1996 (1996-05-01), pages 98 - 104, XP000574146 * |
GLITHO R H: "THE STANDARDS ASPECTS OF SS7 NETWORK MANAGEMENT", JOURNAL OF NETWORK AND SYSTEMS MANAGEMENT, vol. 2, no. 3, 1 September 1994 (1994-09-01), pages 233 - 256, XP000574573 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008113298A1 (fr) * | 2007-03-22 | 2008-09-25 | Huawei Technologies Co., Ltd. | Procédé, équipement et système pour un routage dans un réseau organisé entre des points de transit à double signalisation et des éléments de réseau interdépendants |
Also Published As
Publication number | Publication date |
---|---|
EP1078536A1 (de) | 2001-02-28 |
CN1300507A (zh) | 2001-06-20 |
CA2331706A1 (en) | 1999-11-18 |
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