EP1078536A1 - Procede de signalisation dans un point de transfert de signalisation - Google Patents

Procede de signalisation dans un point de transfert de signalisation

Info

Publication number
EP1078536A1
EP1078536A1 EP99920848A EP99920848A EP1078536A1 EP 1078536 A1 EP1078536 A1 EP 1078536A1 EP 99920848 A EP99920848 A EP 99920848A EP 99920848 A EP99920848 A EP 99920848A EP 1078536 A1 EP1078536 A1 EP 1078536A1
Authority
EP
European Patent Office
Prior art keywords
signaling
messages
loop
sent
destination
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP99920848A
Other languages
German (de)
English (en)
Inventor
Klaus Gradischnig
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to EP99920848A priority Critical patent/EP1078536A1/fr
Publication of EP1078536A1 publication Critical patent/EP1078536A1/fr
Withdrawn legal-status Critical Current

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

Dans des réseaux de signalisation, il peut y avoir des boucles d'acheminement, faisant que des données sont acheminées dans une boucle vers une destination à laquelle elles ne parviennent jamais. L'invention indique comment reconnaître et éliminer aussi vite que possible de telles boucles.
EP99920848A 1998-05-12 1999-05-04 Procede de signalisation dans un point de transfert de signalisation Withdrawn EP1078536A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP99920848A EP1078536A1 (fr) 1998-05-12 1999-05-04 Procede de signalisation dans un point de transfert de signalisation

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP98108645 1998-05-12
EP98108645 1998-05-12
EP99920848A EP1078536A1 (fr) 1998-05-12 1999-05-04 Procede de signalisation dans un point de transfert de signalisation
PCT/EP1999/003048 WO1999059349A1 (fr) 1998-05-12 1999-05-04 Procede de signalisation dans un point de transfert de signalisation

Publications (1)

Publication Number Publication Date
EP1078536A1 true EP1078536A1 (fr) 2001-02-28

Family

ID=8231919

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99920848A Withdrawn EP1078536A1 (fr) 1998-05-12 1999-05-04 Procede de signalisation dans un point de transfert de signalisation

Country Status (4)

Country Link
EP (1) EP1078536A1 (fr)
CN (1) CN1300507A (fr)
CA (1) CA2331706A1 (fr)
WO (1) WO1999059349A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
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
CN100579077C (zh) * 2007-03-22 2010-01-06 华为技术有限公司 一种双信令转接点与互助网元组网下的路由方法及系统
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

Family Cites Families (3)

* Cited by examiner, † Cited by third party
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 (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9959349A1 *

Also Published As

Publication number Publication date
CN1300507A (zh) 2001-06-20
CA2331706A1 (fr) 1999-11-18
WO1999059349A1 (fr) 1999-11-18

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