EP1118228A2 - Procede d'evaluation d'une unite de donnees d'une couche presentation - Google Patents

Procede d'evaluation d'une unite de donnees d'une couche presentation

Info

Publication number
EP1118228A2
EP1118228A2 EP99955731A EP99955731A EP1118228A2 EP 1118228 A2 EP1118228 A2 EP 1118228A2 EP 99955731 A EP99955731 A EP 99955731A EP 99955731 A EP99955731 A EP 99955731A EP 1118228 A2 EP1118228 A2 EP 1118228A2
Authority
EP
European Patent Office
Prior art keywords
error
application
coding
platform
data unit
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Withdrawn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
EP99955731A
Other languages
German (de)
English (en)
Inventor
Bernhard Schild
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
Publication of EP1118228A2 publication Critical patent/EP1118228A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/02—Standardisation; Integration
    • H04L41/0213—Standardised network management protocols, e.g. simple network management protocol [SNMP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/04—Network management architectures or arrangements
    • H04L41/052—Network management architectures or arrangements using standardised network management architectures, e.g. telecommunication management network [TMN] or unified network management architecture [UNMA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/40—Network security protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0016—Arrangements providing connection between exchanges
    • H04Q3/0062—Provisions for network management
    • H04Q3/0095—Specification, development or application of network management software, e.g. software re-use
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/30—Definitions, standards or architectural aspects of layered protocol stacks
    • H04L69/32—Architecture of open systems interconnection [OSI] 7-layer type protocol stacks, e.g. the interfaces between the data link level and the physical level
    • H04L69/322—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions
    • H04L69/328—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions in the presentation layer [OSI layer 6]

Definitions

  • the invention relates to a method for evaluating a presentation layer data unit, which contains application-related messages encoded for at least one application process running in a Q3 platform according to a predetermined coding protocol, and which on the part of the Q3 platform via a on a Q3 interface between the Q3 -Platform and a partner-Q3 platform established association is received, at which
  • the invention relates to a Q3 platform with at least one Q3 interface, on which associations to a partner Q3 platform can be established, with an application layer for application processes of the Q3 platform and with a presentation machine for receiving presentation layer data units, in which application-related messages for at least one of the application processes are coded according to a predefined coding protocol, via the associations and for evaluating these data units, the display engine being set up to
  • Q3 platforms and Q3 interfaces are used in connection with a so-called control network according to various
  • ITU International Telecommunications Association
  • Modern telecommunications networks usually include a large number of switching and transmission technology components; these are referred to in the following as network elements (NE, ⁇ Network Elements') in accordance with the ITU recommendations mentioned.
  • the standards M.3010 and M.3100 see an independent, information-processing control network (TMN, ⁇ Telecommunications Management) for the task of comprehensive overall control of the network elements of a telecommunications network with regard to operation, administration and maintenance (CAM, ⁇ operations, Administration and Maintenance ') Network '), to which, among other things, the network elements belong and which has access to the network elements via standardized interfaces and protocols, from which it receives control-relevant messages and which it controls.
  • TTN information-processing control network
  • An operation center provided in the control network allows the centralized OAM operational control of the telecommunications network, as well as the operation and monitoring of the control network by maintenance personnel via terminals.
  • For switching centers of the telecommunications network it is provided to connect them directly to the operations center via a so-called Q3 interface.
  • Network nodes of a control network equipped with one or more Q3 interfaces this includes in particular the mentioned switching centers with Q3 interface and the operation centers of the control network - are referred to as Q3 platforms.
  • Another type of interface which is of no importance for the invention, for example, is the less complex, so-called Q2 interface provided for simpler network elements, for the indirect connection of network elements via intermediate points to the operation center.
  • a general one is used on the Q3 interfaces in accordance with recommendations X.710 and X.711 of the ITU
  • Control message service called CMIS (om on Management Information Service ') the exchange of messages and commands related to network control.
  • CMIS Control message service
  • a connection established between a control center and a network element in the control network is referred to as an association.
  • the operations center can use an association to send commands from the CMIS service, so-called CMISE operations ( ⁇ Common Management Information Service Element '), to the network element; CMISE operations for several CMIS processes can be carried out on a single association.
  • the message exchange of the association and in particular the CMIS service is based on the protocol layer architecture according to the OSI 7-layer model (see ITU recommendation X.200).
  • OSI 7-layer model Only the top two layers of the OSI 7-layer model are affected by the invention, namely layer 6, the so-called presentation layer ( ⁇ presentation layer), and layer 7, the so-called application layer.
  • the application layer contains the application-specific processes, in especially the CMISE operations, and uses the functions of the presentation layer for this.
  • the presentation layer is used to produce a common coding for the Q3 platforms involved on the basis of the functions of layer 5, the so-called communication control layer ( ⁇ session layer '). Layers 1 to 5 are of course not affected by the invention.
  • a Q3 platform provides a so-called PPM ( ⁇ Presentation-Layer Protocol Machine ') for the data exchange in the presentation layer.
  • PPM Presentation-Layer Protocol Machine
  • the message exchange between the PPMs of the Q3 platforms takes place in the form of so-called PPDUs
  • the form of the PPDUs and the course of the message exchange by means of the PPDUs are determined on the basis of a predetermined coding protocol; according to the standards for the Q3 interface, the coding protocol is established the regulation of the so-called 'Basic Encoding Rules' according to ITU recommendation X.209 and a syntax based on the so-called ASN structure according to ITU recommendation X.208.
  • PPDUs received via the association are (provided that no error occurs) checked and decoded in the PPM according to the coding protocol, from which the data for di e Application processes are determined and the application-related messages obtained in this way are passed on to the application layer, where they are forwarded to the associated application processes.
  • the receiving PPM recognizes an invalid data unit (invalid PPDU ').
  • ARP-PPDU 'Abnormal Release Provider PPDU'
  • the deviation from the coding rules or the syntax in the PPDU relates to parameters that are required for processing in the presentation layer, or to user data, i.e. data from the application layer such as user data from CMISE Commands, limited.
  • an attribute value "incompatible" with the coding protocol in the user data leads to a termination of the entire association in a single operation of the application layer.
  • This termination of the connection also includes the termination of the execution of the other CMIS application processes that use this association expire, furthermore the loss of the messages and feedback transmitted via the association and last but not least also a delay for the transmission of further operations, since a new association has to be established for this purpose, which is the reason for the connection breakdown, in particular the causing operation on the Q3 -Interface or the parameter value triggering the termination cannot be determined from the messages exchanged according to the standards, namely the termination message and the ARP-PPDU.
  • connection breakdown problems can arise not only in the application and / or presentation layer, but also in one of the underlying layers of the protocol layer architecture, e.g. in equipment (corresponding to layer 1, the transmission layer) or on the part of time monitoring (corresponding to layer 4) , the transport layer, or an underlying layer); General system problems, such as a temporary lack of resources, are also possible.
  • a connection termination is usually time-consuming Analyzes by themselves.
  • active * Q3 platform which is usually the operations center, queries are started for all aborted applications or operations, and if necessary, these are cleared and / or a repetition is initiated; log files must also be read out and evaluated because of the possible loss of notifications.
  • the association via which the faulty data unit was exchanged including the messages triggering it, such as the aforementioned ARP-PPDU, can be stopped.
  • the display machine is set up to abort the evaluation in the event of an error in the coding of the user data in a data unit and to forward this error to the application layer
  • the application layer is set up to generate an error response indicating the coding error in the form of an application error message of the application process concerned and to send it to the partner Q3 platform on the basis of an error message relating to a user data coding error in a presentation layer data unit.
  • an error message which indicates an invalid attribute value and a note on the erroneous attribute, generated and sent. It is also advantageous if, in the event that the data unit relates to the change in data objects and / or attributes and a coding error relating to the list of changes is determined, an error message is generated and sent which indicates the inadequate feasibility of at least one change and in which the parts of the news relating to this change (s) are marked accordingly.
  • the data unit relates to the execution of at least one action by an application process and a coding error regarding the information of the action (s) to be carried out is determined, it is an error message which indicates an invalid attribute value and a reference to the has incorrect information and / or its type, is generated and sent.
  • an error message is generated and sent which indicates the use of a parameter which was not agreed for the application process in relation to the data unit.
  • An association was established on a Q3 interface between a Q3 platform and another Q3 platform, which is referred to below as a partner Q3 platform or partner platform for short.
  • the association receives PPDUs from the Q3 platform.
  • the Q3 platform will be a network element, while the partner platform sending the PPDUs is the operations center of the control network; other constellations are also conceivable, e.g. those in which an operations center is the (receiving) Q3 platform.
  • the PPM of the Q3 platform which has received a PPDU, makes a distinction between the application data, d.s. the data content relating to a CMIS application, and the protocol structure data relating to the presentation layer.
  • the application data d.s. the data content relating to a CMIS application
  • the protocol structure data relating to the presentation layer.
  • the decoding problems are treated analogously to the semantic errors recognized by a CMIS application.
  • individual, incorrect attribute values can also be dealt with in the error message.
  • the associated association is not terminated. It is irrelevant to the invention by what event the Errors have been generated since the invention only relates to the evaluation on the receiving Q3 platform and its reaction to an error in the received data unit.
  • the detected decoding problem can consist, for example, of an incorrectly displayed or inadmissible value in an object model part of a CMIS application, such as an attribute value or a so-called 'ActionlnfoArgument'.
  • the error is now on the associated CMISE
  • a corresponding CMISE error message signals the partner platform.
  • the application object models are loaded in the operating partner platforms, i.e. are to be regarded as input data with the known error possibilities.
  • PPDU can be decoded for the presentation layer in accordance with the coding protocol
  • the presentation of one or more of the application-related parameters in the PPDU violates the coding regulation, ie the 'Basic Encoding Rules'.
  • a so-called 'MistypedArgument' error message is expediently used, which actually indicates the use of a parameter that was not agreed between the CMISE users.
  • a “slight” error exactly one parameter is affected, and it is also possible to determine how it is not permitted.
  • error messages can be used, for example of the type 'InvalidAttributeValue' or 'InvalidFilter', whereby additional parameters of the error message type used in each case can be used to transmit further, more precise information regarding the error found. If none of the error types defined in the standards correctly describes the error found, a
  • error messages can be generated in the event of decoding problems: 1.
  • An 'M_CREATE' operation (which relates to the creation of a data object in accordance with ITU standard X.710) is triggered in the event of a coding error regarding the attribute list (so-called 'AttributeList') of the data object to be generated rejected with an 'InvalidAttributValue' error message (which in itself indicates an invalid attribute value) with a reference to the incorrect attribute.
  • a 'M_SET' operation (which, according to ITU standard X.710, affects the modification of data objects and / or attributes) is marked with a in the event of a coding error regarding elements of the modification list (so-called 'ModificationList')
  • An 'M_SET' operation a 'MGET' operation (which, according to ITU standard X.710, concerns the request for attributes), an 'M_DELETE' operation (which, according to ITU standard X.710, the deletion of a data object ) or an 'M_ACTION' operation (which is intended for actions of Q3 applications in accordance with ITU standard X.710) will result in a coding error with regard to an application parameter rejected within the 'CMISE_FILTER' parameter with an 'InvalidFilter' error message (which in itself indicates an invalid filter operation).
  • the procedure according to the invention prevents the association from being terminated if possible in the event of decoding problems.
  • the type of error message and, if applicable, the content of the error message is used to specifically point out the incompatible value to the partner platform, thus making it easier to reliably identify the error.
  • the invention makes it possible to use the error message to obtain information about the operations or application data that are actually causing the error. In these cases, there is no need to fear availability restrictions, and therefore no message loss. Furthermore, the effort for breaking the connection and establishing a new connection is avoided. It should be pointed out that the invention introduces a deviation of the task distribution between the application layer and the presentation layer from the protocol layer structure according to the ITU standard X.200, since individual tasks of the PPM are passed on to the CMIS applications.
  • the invention violates the X.200 standard, and the treatment of decoding problems according to the invention can in principle only be performed by a Q3 platform that can support a protocol layer architecture that deviates from the X.200 standard.
  • the task area of the presentation layer is reduced and these parts are shifted to the application layer.
  • the application layer can react appropriately with comparatively little effort in the respective error cases.
  • the following coding errors are distinguished: a) coding errors of the user parameters which can be answered with specific error messages; b) coding errors of the user parameters that can be answered with an unspecific error message; c) Coding errors due to problems in the presentation layer.
  • the errors of cases a) and b) are treated according to the invention in the application layer (layer 7), whereas only in case c) the display layer (layer 6) handles the error and the connection is terminated.
  • ITU recommendations X.200 and X.226 require that all three types of errors be dealt with in the presentation layer, which is why the connection must be terminated in all three cases.
  • the invention to the partner platform which is connected to the Q3 platform implemented according to the invention, does not go beyond the ITU standards mentioned, in particular the X.710 and X.711 Demands.
  • the “trivializing” handling of error cases according to the invention is transparent for the partner platform, since this can generally only be remedied by changing the object model on the part of the partner platform, with “minor” and “serious” errors having the same effect.
  • the so-called 'M_SET' operation includes a list of modifications to user data. According to recommendation X.720, those modifications are to be carried out which are supported by the application, i.e. the 'M_SET' operation should at least partially be performed as much as possible. As a result of the variant, however, the 'M_SET' operation becomes complete in any case in relation to even one of the modifications in the event of a decoding problem, i.e. for all modifications, rejected, correct modifications being contained in the so-called 'SetListError' error message with the error status 'AccessDenied' in the sense of the coding protocol.
  • the possible decoding problems relate to application parameters that are known to the Q3 platform, not unknown parameters.
  • user parameters unknown to the Q3 platform could be ignored here without affecting the execution of the further modifications.
  • the partial execution of the modifications contained in the 'M_SET' operation in the case of decoding problems of application parameters known in the Q3 platform can, under certain circumstances, lead to unintended changes. changes of the switching center with possibly not envisaged system states, or obscures the decoding problem.
  • a correction of the object model should be initiated in the partner platform sending the operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Communication Control (AREA)
  • Computer And Data Communications (AREA)
  • Maintenance And Management Of Digital Transmission (AREA)

Abstract

Selon l'invention, une plate-forme Q3 effectue, pour évaluer une unité de données d'une couche présentation, qui contient des messages concernant au moins un processus d'application se déroulant dans cette plate-forme Q3 et codés selon un protocole de codage prédéterminé et qui est reçue par l'intermédiaire d'une association établie sur une interface Q3 entre la plate-forme Q3 et une plate-forme Q3 partenaire, le contrôle de la concordance de la structure de l'unité de données avec le protocole de codage. Si le codage de l'unité de données est exempt d'erreurs, les données utilisateur contenues dans l'unité de données sont décodées et des messages relatifs à l'application définie à partir de ces données sont transmis au(x) procédé(s) d'application associé(s). Si toutefois une erreur est déterminée dans le codage, en ce qui concerne les données utilisateur, l'évaluation est interrompue et un avis d'erreur correspondant est envoyé au processus d'application concerné, ce qui entraîne, côté processus d'application, la génération d'une réponse d'erreur indiquant l'erreur de codage, se présentant sous la forme d'un message d'erreur d'application, et l'envoi de cette réponse à la plate-forme Q3 partenaire.
EP99955731A 1998-09-30 1999-09-17 Procede d'evaluation d'une unite de donnees d'une couche presentation Withdrawn EP1118228A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19845109A DE19845109A1 (de) 1998-09-30 1998-09-30 Verfahren zum Auswerten einer Darstellungsschicht-Dateneinheit
DE19845109 1998-09-30
PCT/DE1999/002982 WO2000019737A2 (fr) 1998-09-30 1999-09-17 Procede d'evaluation d'une unite de donnees d'une couche presentation

Publications (1)

Publication Number Publication Date
EP1118228A2 true EP1118228A2 (fr) 2001-07-25

Family

ID=7882979

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99955731A Withdrawn EP1118228A2 (fr) 1998-09-30 1999-09-17 Procede d'evaluation d'une unite de donnees d'une couche presentation

Country Status (7)

Country Link
US (1) US6687869B1 (fr)
EP (1) EP1118228A2 (fr)
CN (1) CN1179580C (fr)
AR (1) AR021494A1 (fr)
BR (1) BR9914148A (fr)
DE (1) DE19845109A1 (fr)
WO (1) WO2000019737A2 (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5155842A (en) * 1989-08-14 1992-10-13 Microsoft Corporation Logical event notification method and apparatus
US6421323B1 (en) * 1994-12-23 2002-07-16 Applied Digital Access, Inc. Method and apparatus for analyzing events in a telecommunications system
US6289037B1 (en) * 1997-02-24 2001-09-11 At&T Wireless Services Inc. Out of channel cyclic redundancy code method for a discrete multitone spread spectrum communications system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0019737A2 *

Also Published As

Publication number Publication date
US6687869B1 (en) 2004-02-03
AR021494A1 (es) 2002-07-24
DE19845109A1 (de) 2000-04-13
CN1179580C (zh) 2004-12-08
BR9914148A (pt) 2001-06-26
CN1320339A (zh) 2001-10-31
WO2000019737A3 (fr) 2000-05-25
WO2000019737A2 (fr) 2000-04-06

Similar Documents

Publication Publication Date Title
DE69228819T2 (de) Konfigurations- und Betriebsverfahren eines Telekommunikationsgeräts
DE60014234T2 (de) System und Verfahren zum Ermöglichen von Fehlertolerante Systeme
EP2838220A1 (fr) Procédé de transmission redondante de messages dans un réseau de communication industriel et appareil de communication
DE69427198T2 (de) Kommunikationssystem mit einem ein verwaltungsmodul einschliessendem netz
DE10251911B4 (de) Verfahren für das Konfigurationsmanagement und Netzwerk
EP1119174A2 (fr) Méthode, commutateur, ordinateur de médiation, ordinateur et module de programme pour la facuration des donnees de services de telecommunications
EP3798767A1 (fr) Procédé et dispositif de commande de l'échange de données d'un terminal industriel
DE19921589C2 (de) Verfahren zum Betrieb eines Datenübertragungssystems
EP1668822B1 (fr) Procede de synchronisation d'alarmes dans un systeme de gestion de reseau de communication
WO2004008784A1 (fr) Identification d'insuffisances de rendement en matiere de services dans un reseau de communication
EP1798892A1 (fr) Procédé de chargement d'une liste d'alarmes par une application de gestion d'alarmes
WO2015014543A1 (fr) Protocole de redondance logiciel
EP1118228A2 (fr) Procede d'evaluation d'une unite de donnees d'une couche presentation
CH686540A5 (de) Verfahren zum Steuern und Verwalten von Netzwerkelementen.
EP1277309B1 (fr) Procede d'analyse d'unites de donnees de protocole envoyees
EP0850545A1 (fr) Systeme environnemental operationnel pour des applications de services d'un reseau de telecommunication
EP2606608B1 (fr) Extension pour le protocole de gestion de réseau simple (snmp) pour déterminer des informations sur le statut de set-pdu
DE19520747C2 (de) Infrastruktur für ein System von verteilten Objektmanager-Komponenten
EP1019808B1 (fr) Systeme et procede sensible pour traitement de signaux numeriques et procede de fonctionnement d'un systeme sensible
DE102004017698A1 (de) SCADA-System
DE60130434T2 (de) Verfahren und System zur Netzwerküberwachung
EP1460798A1 (fr) Procédé et système de communication pour arrêter des opérations de gestion dans un réseau de gestion
EP0825526B1 (fr) Procédé pour l'interaction entre deux unités
EP1261168B1 (fr) Méthode et agents pour le traitement de messages d'événements
EP2246761A1 (fr) Interface et procédé de modifications assurées des paramètres d'un composant d'automatisation industriel protégé contre les erreurs

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20010208

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20060404