WO2004040853A1 - Dispositif nodal et appareil de soutien a la maintenance/ a l'exploitation - Google Patents

Dispositif nodal et appareil de soutien a la maintenance/ a l'exploitation Download PDF

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Publication number
WO2004040853A1
WO2004040853A1 PCT/JP2002/011205 JP0211205W WO2004040853A1 WO 2004040853 A1 WO2004040853 A1 WO 2004040853A1 JP 0211205 W JP0211205 W JP 0211205W WO 2004040853 A1 WO2004040853 A1 WO 2004040853A1
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WO
WIPO (PCT)
Prior art keywords
node device
link
paths
links
mentioned
Prior art date
Application number
PCT/JP2002/011205
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English (en)
Japanese (ja)
Inventor
Satoshi Kumano
Yoshiyasu Sutou
Toshiyuki Yada
Kiyofumi Hara
Tomoyuki Abe
Michiko Suzuki
Kenichiro Ogi
Original Assignee
Fujitsu Limited
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 Fujitsu Limited filed Critical Fujitsu Limited
Priority to PCT/JP2002/011205 priority Critical patent/WO2004040853A1/fr
Priority to JP2004547981A priority patent/JP4002928B2/ja
Publication of WO2004040853A1 publication Critical patent/WO2004040853A1/fr
Priority to US11/066,568 priority patent/US7835266B2/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
    • H04J3/1605—Fixed allocated frame structures
    • H04J3/1611—Synchronous digital hierarchy [SDH] or SONET

Definitions

  • the present invention is based on a cross-connect based on a node device which is arranged for each transmission section and performs cross-connect in a transmission system to which a synchronous transmission mode is applied, and which is linked to these node devices.
  • the present invention relates to a maintenance and operation support device for maintaining links and paths.
  • the Synchronous Digital Hierarchy (SDH) is used to transmit various signals from the low-order group to the high-order group, and to transmit information in the high-order group flexibly. Because it is capable of monitoring, testing, and controlling various maintenance and operation of roads, it is widely applied to private networks as well as B-SDN and other trunk systems.
  • FIG. 9 is a diagram showing a configuration example of a network to which the new synchronization interface is applied.
  • node devices 42-a to 42-d are arranged in a network 41 which is formed as a ring as a UPSR (Unidirectional Path Switched Ring) and is duplicated based on a normal redundant system.
  • Monitoring devices 42-a to 42-d are arranged in a network 41 which is formed as a ring as a UPSR (Unidirectional Path Switched Ring) and is duplicated based on a normal redundant system.
  • UPSR Unidirectional Path Switched Ring
  • the node device 42-a is composed of the following elements.
  • the monitoring control unit 48-a connected to the other control terminal of the cross-connect unit 44-a and the control terminal of the path switch 45-a and connected to the LAN 52.
  • the configuration of the node devices 42-b to 42-d is basically the same as the configuration of the node device 42-a.
  • the same reference numerals to which the letters “b” to “d” are added are given, and the detailed description thereof is omitted here.
  • the respective units of the node devices 42-a to 42-d are linked as described below to form a unit of a predetermined next group (for example, a path having a transmission speed of 52 Mbps).
  • a connection is made, and a predetermined path is formed between the communication devices accommodated in these node devices 42-a to 42-d via the network 41.
  • the holding memory 47-C stores, between the preceding transmission section and the following transmission section of the network 41, and between any of these transmission sections and the communication device accommodated in the node device 42-C, respectively.
  • the control information indicating the formed path is stored as station information (including the station information updated by the monitoring control unit 48-C).
  • the cross-connect unit 44-C transmits all the paths indicated by such station information between the preceding transmission section and the following transmission section of the network 41 and any of these transmission sections. It is formed between the node device 42 and the communication device accommodated in the 2-C.
  • the path switch 45-C is a low-speed output corresponding to a path to be individually connected to the communication device described above (for input of two adjacent transmission sections), among the low-speed outputs of the cross-connect section 44-C. Corresponding to one of the roads) under the leadership of the supervisory control unit 48-C, and connect the low-speed output to the low-speed interface unit 46-C.
  • the units are linked as follows.
  • monitor controller 5 1 transmission section ab, bc, cd, da v ad, dc, cb, working being formed through one of the ba path and, in excess of the transmission capacity of the transmission section A backup path that is reserved in advance and that can replace these working paths is managed centrally.
  • the monitoring control device 51 transmits all the paths formed through the transmission section ab (hereinafter, individually Specific path ”).
  • the monitoring controller 51 identifies, under the above-described management, backup paths that can individually substitute these specific paths, and for each of these backup paths, the identifier of the corresponding specific path. And the identifiers of the node devices arranged at both ends of this specific path are notified to the operator based on a predetermined man-machine interface.
  • the supervisory control device 51 is provided with the system configuration information related to the specific path (the management described above is performed. ), And sends a “switching command” including the identifiers of these specific paths and the backup path to the two node devices located at both ends of the corresponding backup path via the LAN 52 I do.
  • the monitoring control unit 48-C separately provided for the two node devices described above is indicated by an identifier included in such a “switch command”.
  • the path switch 45-C is instructed to substitute a specific path with a spare path.
  • switch command is not sent to any node device unless a specific path is designated by the operator.
  • the message is transmitted to two node devices arranged at both ends of the specific path.
  • next group of transmission sections where cross-connection should be performed is likely to shift to a higher next group as the demand for data transmission services increases, especially in trunk networks.
  • An object of the present invention is to provide a node device and a maintenance and operation support device in which a desired transmission section and a link can be efficiently released without drastically changing the basic configuration.
  • Another object of the present invention is to maintain high transmission quality and service quality of a transmission system without deteriorating overall reliability.
  • an object of the present invention is to release a desired transmission section smoothly and accurately.
  • an object of the present invention is to provide a system in which any of a plurality of or a large number of working links is formed as long as the above-mentioned spare link is determined under the system configuration. The point is that the formed link is released efficiently and accurately.
  • the object of the present invention is to provide the following group of individual links, regardless of the number of paths to be substituted in accordance with the above-described requirements, and the form of the redundant configuration of the physical links. Even if a plurality or a large number of working links are formed on any of the links, the link on which these paths are formed is released efficiently and accurately. ——. ⁇ .
  • an object of the present invention is that maintenance, operation, and other requests are prioritized, and a specific transmission section / link released in response to the request is stably secured.
  • the object of the present invention is to simplify the configuration and improve the reliability as compared with the case where a dedicated communication link must be laid between the command transmission end and the relay end, The point is that costs can be reduced.
  • an object of the present invention is to eliminate the geographical restrictions of sites where monitoring and control operations related to maintenance and operation are to be performed via a specific communication link, and to realize various forms of these maintenance and operation. It is possible to adapt flexibly.
  • Another object of the present invention is to reduce the cost in addition to simplifying the configuration and improving the reliability. .
  • an object of the present invention is to reduce labor and efficiency of work related to release of a desired transmission section or link as compared with the conventional example. .
  • An object of the present invention is to reduce the increase in traffic associated with the transmission of the above-mentioned commands regardless of the combination and number of transmission sections and links to be released.
  • the purpose described above is to be such that, when a directive is given from the outside that contains the identifiers of all the paths on which the alternative paths are to be formed and the alternative links on which these alternative paths are to be formed, This cannot be achieved by a node device that is characterized in that links are preferentially selected.
  • the link on which these paths are formed is efficiently and It is released with high accuracy.
  • the above-mentioned object is attained by a node device which is indicated by an identifier included in the command and which is characterized in that the paths to be formed on the alternative link are all paths formed in a specific transmission section. Is done. +
  • the node device should correspond to the start point or the end point, and all paths that should be replaced in accordance with maintenance, operation, and other requirements, and paths that replace these paths should be formed.
  • a spare link is designated collectively from the outside, and parentheses are used for the column of identifiers of the links on which these paths are formed and for the above-described duplexing method. It is selected autonomously based on the combined system configuration.
  • the purpose described above is to specify, when a command indicating a set of identifiers of links to be released is given from the outside, all paths and all links indicated by identifiers registered in association with the set. However, for all these paths, this is achieved by a node device characterized in that an alternative link is preferentially selected.
  • the node device corresponds to the start point or the end point, and all paths to be replaced in accordance with maintenance, operation, and other requirements, and paths that substitute for these paths are formed.
  • the spare link to be designated is designated collectively from the outside, and is autonomously selected based on the identifier column of the link on which these paths are formed. .
  • a node device characterized by the fact that an anchor indicated by an identifier included in a command and to be released is "all links formed in a specific transmission section".
  • the above object is achieved by a node device characterized in that the update of the path formed on the selected link is suspended.
  • a command is given as information delivered via “a transmission band formed in a preceding transmission section. Surplus transmission band of a link”.
  • the above-described command is reliably given even when a dedicated communication link is not laid between the transmitting end and the relay end of the command. Therefore, compared to the case where such a dedicated communication link must be laid, the cost can be reduced along with the simplification of the configuration and the improvement of the reliability.
  • the above object is achieved by a node device characterized in that a command is given as information delivered via a "specific communication link different from any preceding transmission section".
  • the above-mentioned command is reliably transmitted via the above-described specific communication link even when the transmitting end or the relay end of the command is not present in the area where the existing link is laid. Given.
  • the command includes the identifier of the node device corresponding to the destination of the command, and relays the command whose destination does not correspond to the own station via the excess transmission band of the subsequent transmission section. This is achieved by a characteristic node device.
  • the above-described command is delivered to another node that is the destination of the command by utilizing the excess transmission band of the link to be cross-connected.
  • a maintenance and operation support apparatus characterized in that a command including a path registered together with a node is collectively delivered to each node registered in advance corresponding to a specified link. Is done.
  • the above-described object is characterized in that a command including a path registered along with the node and an alternative link is collectively delivered to each node registered in advance corresponding to the designated link. This is achieved by the maintenance operation support device.
  • a maintenance operation support device characterized in that all links are duplicated links. ..: With such a maintenance and operation support device, it is not necessary for nodes located at both ends of any path to notify a link where an alternative path should be formed in place of the relevant path. Become. .
  • the transmission section to be released such as the combination and number of links ⁇ ! Nevertheless, the increase in traffic associated with the transmission of the above-mentioned commands is mitigated.
  • the above-mentioned purpose is to pre-register links belonging to the set for each set conforming to the network configuration, and identify all links registered corresponding to the set specified from the outside as links to be released.
  • the combination of the link and the transmission section to be released is specified as a single set from the outside as long as it is defined in advance as a known set.
  • the set is “a combination of transmission sections and / or links that are the targets of work related to network maintenance or operation”. This is achieved by a maintenance operation support device.
  • FIG. 1 is a principle block diagram of a node device according to the present invention.
  • FIG. 2 is a maintenance operation support device according to the present invention.
  • FIG. 3 is a diagram for explaining the operation of the first embodiment of the present invention.
  • FIG. 4 is an operation flowchart of the first embodiment of the present invention.
  • FIG. 5 is a diagram illustrating the operation of the second embodiment of the present invention.
  • FIG. 6 is an operation flowchart of the second embodiment of the present invention.
  • FIG. 7 is a diagram showing a configuration of the path management table.
  • FIG. 8 is a diagram showing a configuration of the bandwidth management table.
  • FIG. 9 is a diagram illustrating a configuration example of a network to which the new synchronization interface is applied. ⁇ >> ⁇
  • FIG. 1 is a principle block diagram of a node device according to the present invention.
  • the node device shown in FIG. 1 includes control means 11 and 11 A, cross-connect means 12 and 12 A, and storage means 13 and 13 A.
  • the principle of the first node device according to the present invention is as follows.
  • the control means 11 is a duplicated communication device 10-accommodated in its own station. For all links that can be used to form individual paths between ⁇ 10-n and the communication device accommodated in another station, the working links on which these paths are to be formed are individually selected.
  • the cross-connecting means 12 communicates with the communication devices 10-1 to 10 -n and the communication devices accommodated in other stations via the working link selected by the control means 11 among all the links. Form a path between them.
  • the control means 11 separates these paths individually based on a system configuration adapted to the redundant system. Select a spare link to be formed ⁇ ⁇ ⁇
  • node device In such a node device, all paths specified collectively from the outside for all paths to be replaced in response to maintenance, operation, and other requirements are replaced with alternative paths on which paths that replace these paths should be formed. Even if no link is specified, it is formed as a spare link determined based on the system configuration compatible with the above-mentioned duplexing method.
  • the principle of the second node device according to the present invention is as follows.
  • the control means 1 1 ⁇ is a communication device 1 0-;! Among all the links that can be used to form individual paths between ⁇ 10-n and the communication device accommodated in another station, the links on which these paths are to be formed are individually selected.
  • the cross-connecting means 12 A communicates between the communication device 10-:! ⁇ 10 -n and the communication device accommodated in another station via the link selected by the control means 11 A among all the links. Form a path between them.
  • the control means 11A performs these operations when a command including the identifiers of all the paths on which the alternative paths are to be formed and the alternative links on which these alternative paths are to be formed is externally given. Select an alternative link preferentially.
  • the principle of the third node device according to the present invention is as follows.
  • the paths indicated by the identifier included in the command and to be formed on the alternative link are all paths formed in a specific transmission section.
  • the principle of the fourth node device according to the present invention is as follows.
  • the control means 11 is used for forming individual paths between the communication device 10-1 and the communication device accommodated in the other station which are duplicated and accommodated in the own station. For every link obtained, select the links on which these paths should be formed individually.
  • the cross-connect means 12 communicates with the communication device 10-:! via the link selected by the control means 11 among all the links.
  • a path is formed between ⁇ 10-n and a communication device accommodated in another station.
  • the storage means 13 registers, for each set of links that can be released in parallel, the identifiers of all the paths formed on the links belonging to the set. When a command indicating a set of identifiers of working links to be released is externally given, the control means 11 is associated with the set based on a system configuration adapted to the duplex system. A spare link in which all paths indicated by the identifier registered in the storage means 13 are to be individually formed is selected.
  • the node device corresponds to a start point or an end point, and all paths to be replaced in accordance with maintenance, operation, and other requirements, and paths that replace these paths are formed.
  • Spare links to be designated are designated collectively from the outside and are autonomous based on the identifier column of the links on which these paths are formed and the system configuration in conformity with the above-mentioned duplexing method. Is selected.
  • the control means 11A is provided for all the paths that can be used for forming individual paths between the communication devices 10-1 to 10- n accommodated in the own station and the communication devices accommodated in other stations. Of the links, the links on which these paths are to be formed are individually selected.
  • the cross-connecting means 12A is connected between the communication device 10-1 to 10-n and the communication device accommodated in another station via the link selected by the control means 11A among all the links. To form a path.
  • the storage means 13A stores, for each set of links that can be released in parallel, for all paths formed on the links belonging to the set, individual paths that do not belong to this set and replace these paths An identifier of an alternative link for which an alternative path is to be formed is registered.
  • control means 11A When a command indicating a set of identifiers of links to be released is externally given, the control means 11A performs all operations indicated by the identifiers registered in the storage means 13A in association with the set. Path and all links are specified, and alternative links are preferentially selected for all these paths.
  • the node device should correspond to the start point or the end point, and all paths that should be replaced in accordance with maintenance, operation, and other requirements, and paths that replace these paths should be formed.
  • Spare links are designated collectively from the outside and are autonomously selected based on the identifier column of the links on which these paths are formed.
  • the principle of the sixth node device according to the present invention is as follows.
  • the links indicated by the identifier included in the directive and to be released are all links formed between specific transmission sections.
  • the principle of the seventh node device according to the present invention is as follows.
  • the cross-connect means 12, 12A suspends the updating of the path formed on the link selected by the control means 11, 11A.
  • the command is information passed over a surplus transmission band of the link formed in the preceding transmission section.
  • the above-described command is reliably given even when a dedicated communication link is not laid between the transmitting end and the relay end of the command. Therefore, compared to the case where such a dedicated communication link must be laid, the cost can be reduced along with the simplification of the configuration and the improvement of the reliability.
  • the principle of the ninth node device according to the present invention is as follows. .
  • the command is information passed through a specific communication link different from any preceding transmission section of the link connected to the cross-connect means 12, 12A.
  • the above-mentioned command is reliably transmitted via the above-described specific communication link even when the transmitting end or the relay end of the command is not present in the area where the existing link is laid. Given.
  • the principle of the tenth node device according to the present invention is as follows.
  • the command includes the identifier of the node device corresponding to the destination of the command.
  • the control means 11 and 11A relay the command whose destination does not correspond to its own station to the subsequent transmission section via the cross-connect means 12 and 12A via the extra transmission band of the transmission section. I do.
  • the above-described command is delivered to another node, which is the destination of the command, by utilizing the excess transmission band of the link to be cross-connected.
  • FIG. 2 is a principle block diagram of the maintenance and operation support device according to the present invention.
  • the maintenance and operation support device shown in the figure is composed of storage means 21 and 21A, man-machine and computer means 22 and command distribution means 23 and 23A.
  • the principle of the first maintenance and operation support device is as follows.
  • the storage means 21 all paths formed for each link and nodes arranged at both ends of these paths among nodes arranged in the network are registered in advance.
  • the man machine interface means 22 takes a man machine interface related to designation of a link to be released.
  • the command distribution unit 23 is registered in the storage unit 21 together with the node to each node registered in the storage unit 21 corresponding to the link specified through the man-machine interface unit 22. Directives including the passed paths are distributed collectively.
  • each of the nodes placed at both ends of all the paths formed on the link specified via the man-machine interface means 22 is replaced with all the corresponding paths.
  • Alternative paths can be notified collectively.
  • the principle of the second operation and maintenance support device is as follows.
  • the storage means 21A stores all paths formed for each link, alternative links on which alternative paths to replace these paths should be formed, and nodes among the nodes arranged on the network. And the nodes arranged at both ends of the path are registered in advance.
  • Man machine The interface means 22 is a man-machine interface for specifying the link to be released.
  • the command distributing means 23 A sends, along with the node, the storage means 21 1 to each node registered in the storage means 21 A corresponding to the link specified via the man-machine interface means 22.
  • the directive including the path registered in A and the alternative link is distributed collectively.
  • the principle of the third operation and maintenance support device is as follows. Since all of the links are duplicated links, as long as the system configuration of these links is independently maintained by individual nodes based on the form of duplication of individual links, they are placed at both ends of any path. It is not necessary to notify the node of the link on which an alternative path should be formed instead of the corresponding path.
  • the principle of the fourth maintenance and operation support device is as follows.
  • links belonging to each set are registered in advance for each set suitable for the configuration of the network.
  • the man-machine interface means 22 identifies all the links registered in the storage means 24 corresponding to the set specified from the outside as links to be released.
  • the combination of the link and the transmission section to be released is specified as a single set from the outside as long as it is defined in advance as a known set.
  • a set is a combination of a transmission section and / or a link that is the target of work related to network maintenance or operation.
  • 3A and 3B are diagrams for explaining the operation of the first embodiment of the present invention.
  • FIG. 4 is an operation flowchart of the first embodiment of the present invention.
  • the feature of this embodiment lies in the following processing procedure performed by the monitoring control device 51 shown in FIG. 9 and the monitoring control unit 48-C provided in the node device 42-C.
  • the monitoring control device 51 performs the following processing.
  • the transmission section ab is specified as the ⁇ transmission section to be released '' by the operator, all ⁇ specific paths '' formed through the transmission section ab are specified (Fig. 4 (1)) .
  • the visual control unit 48- instructs the path switch unit 45-C to replace a specific path indicated by a pair of individual identifiers included in such a “batch switching command” with a corresponding spare path. Command.
  • the pair of identifiers of all the specific paths formed in parallel with the transmission section ab and the alternative paths that can substitute these specific paths are the individual specific paths (paths of the alternative and). It is classified for each node device located at both ends, and is notified collectively to the corresponding node device as the above-mentioned ⁇ batch switching command '', and each node device is included in this ⁇ batch switching command ''. The process of replacing a specific path indicated by a pair of individual identifiers with a backup path is performed collectively.
  • FIG. 5 is a diagram for explaining the operation of the second embodiment of the present invention.
  • FIG. 6 is an operation flowchart of the second embodiment of the present invention.
  • FIG. 3A the operation of the second embodiment of the present invention will be described with reference to FIGS. 3A, 3B, 5, 6, and 9.
  • FIG. 3A the operation of the second embodiment of the present invention will be described with reference to FIGS. 3A, 3B, 5, 6, and 9.
  • the supervisory control device 51 includes, as shown in FIG. 7, a first surface and a second surface individually corresponding to the clockwise link and the counterclockwise link of the duplexed network 41, respectively.
  • a row of records configured as a set of fields has a path management table 5It stored in advance.
  • a “Path Identifier” field that contains a unique and unique path identifier that is individually assigned to all paths that are formed in parallel with the link.
  • the monitoring control unit 48-C provided in the node device 42-C individually corresponds to the clockwise link and the counterclockwise link of the duplexed network 41.
  • a band management table 48 t -C in which a row of records configured as a set of the following fields is stored in advance.
  • the "path identifier" field in which the node device 42-C is individually assigned to all paths corresponding to any of the start point, end point, and relay point and stores a unique path identifier.
  • the path type indicating the mode (one of “relay” and “end”) in which the above-described node device 42-C intervenes for the corresponding path is “Path type identifier” field stored
  • the monitoring control device 51 performs the following processing.
  • the bandwidth management table 48t- The following processing is performed by referring to the individual surface corresponding to the link identifier included in the "individual switching command" among the surfaces of a (48t-b).
  • the value of the "path type” field is "end” ("start point” or "end point” as described above).
  • the value of the “Path Identifier” field of all records for which no alternative restriction is defined as the value of the “Attribute” field by the backup path described later. Get a specific path as a column.
  • the bandwidth management table 48 t -a (4 8 t -b), and based on the predetermined algorithm or the predetermined control information added to the “individual switching command” described above, the corresponding “attribute”.
  • Set a new attribute in the field for example, the "lockout attribute” described above
  • the above-mentioned “individual switching instruction” includes, without duplication, link identifiers of only links forming some specific path to be replaced with the backup path. It is delivered only to the node devices arranged at both ends of each path formed via the transmission section ab to be released.
  • the node device that has received such an “individual switching command” refers to the bandwidth management table 48 t-C which is individually provided, and only the path corresponding to the start point or the end point of its own station to the backup path. Substitute autonomously. Therefore, according to the present embodiment, even if a plurality of (or a large number of) paths can be formed in any one of the links in parallel, the release of a desired transmission section is performed efficiently, with high accuracy. Achieved.
  • the network 41 is formed in a circular shape as a UPSR conforming to the new synchronous interface method (SDH) or SONET (Synchronous Optical Network), and the transmission direction is opposite. It is configured as a duplicated link consisting of two transmission lines.
  • SDH new synchronous interface method
  • SONET Synchronous Optical Network
  • the present invention is not limited to such a network 41, and an alternative path-link is appropriately formed based on the system configuration, and a synchronous transfer mode (STM: Synchronous Transfer Mode) is applied. As long as it is applicable to networks formed under any digital hierarchy, topology and redundancy configuration.
  • STM Synchronous Transfer Mode
  • the working path formed through any of the transmission sections to be released is also changed to the backup path by the path switch 45-C operating under the supervision and control unit 48-C.
  • the present invention is not limited to such a configuration.
  • three or more physical links may be provided in all or a part of a transmission section formed between the node devices 42-a to 42d.
  • the cross-connect part 44-C that operates under the supervision and control section 48-C, or the cross-connect section that cooperates under the control of the supervision and control section 48-C
  • the working path may be replaced with a spare path by means of 44-C and the path switch 45-C. .
  • the processing related to the system configuration of the network 41 is led by the monitoring control device 51.
  • an alternative link identifier indicating the alternative link selected under this system configuration is stored in the path management table 51t as appropriate, and the alternative link identifier is already stored.
  • it is added to the "individual switching command" described above and is transferred to each node device, and as described above, the monitoring and control unit .:
  • each working path may be replaced with a backup path by the cross-connect unit 44-C and the path switch 45-C that are linked under the control of the monitoring control unit 48-C.
  • the network 41 is formed as the above-described UPSR, and is configured to be redundant based on a normal redundant system.
  • all or a part of the links configuring the network 41 may be configured as a BLSR (Bidirectional Line Switched Ring).
  • the above-described “batch switching command”, “individual switching command”, and other control information between the node devices 42-a to 42-d and the monitoring control device 51 are: Handed over to each other directly via LAN 52.
  • any one of the node devices 42-a to 42-d (hereinafter, referred to as a "specific node device").
  • the transfer of the above-described control information between the node device other than the specific node device and the monitoring control device 51 is performed by the node device 4 2 -a to 4
  • Surplus transmission band of transmission section formed during 2 -d predetermined field of overhead suitable for predetermined frame configuration, empty time slot not allocated to any traffic
  • Tribute evening lunit It can be anything. .) May be achieved under a relay process performed by these node devices 42-a to 42-d.
  • the present invention is not limited to such a complete release of a transmission section.
  • a desired transmission section even a single transmission section may be used for a plurality of transmission sections.
  • the same can be applied to the case where the release of a specific link (may be a single link or multiple links) laid on the site should be achieved.
  • the monitoring control device 5.1 is configured as a separate device connected to the node devices 42-a to 42-d via the LAN 52. ing.
  • the present invention is not limited to such a configuration, and the monitoring control device 51 is integrated with any of these node devices 42-a to 42-d, or adapted for maintenance and operation work.
  • the configuration may be such that load distribution and function distribution are performed on these node devices 42-a to 42-d in the above-described manner.
  • release of a desired transmission section can be achieved smoothly and accurately.
  • the above-mentioned spare link is determined under the system configuration, even if a plurality of or a large number of working links are formed on any of the links. As long as the links on which these paths are formed are efficient and accurate Will be released.
  • the fifth node device the following group of the individual links, the number of paths to be replaced in accordance with the above-described request, and the form of the redundant configuration of the physical links are described. Regardless of which of the links has a plurality or a large number of working links, the link on which these paths are formed is released efficiently and accurately. ,... 'Further, in the seventh node device according to the present invention, maintenance, operation and other requests are given priority, and a specific transmission section link released in response to the request is stably secured. It is.
  • the configuration is simplified and the reliability is reduced as compared with the case where a dedicated communication link must be laid between the transmitting end and the relaying end of the command described above. Costs will be reduced along with the improvement of
  • the geographical restriction of the site where monitoring and control operations related to maintenance and operation are to be performed via a specific communication link is eliminated, and these maintenance and operation are performed.
  • Flexible adaptation to various forms of operation is possible.
  • cost can be reduced in addition to simplification of the configuration and improvement of reliability.
  • first and second maintenance and operation support devices according to the present invention, labor and efficiency of work related to release of a desired transmission section / link can be reduced as compared with the conventional example.
  • the third maintenance and operation support apparatus regardless of the combination and the number of transmission sections / links to be released, the increase in traffic associated with the transmission of the above-mentioned commands is reduced.
  • the operation relating to the specification of the link / transmission section to be released is simplified, and the work relating to the maintenance and operation is made more efficient.
  • the efficiency of these operations is improved in addition to the flexible adaptation to various forms of operations related to maintenance and operation. Therefore, in the transmission system to which these inventions are applied, the transmission quality and the service quality can be maintained high without lowering the overall reliability.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

La présente invention concerne un dispositif nodal permettant d'effectuer une interconnexion dans un système de transmission de module de transmission synchrone et un appareil de soutien à la maintenance/à l'exploitation coopérant avec le dispositif nodal. Une section de transmission souhaitée et une liaison sont efficacement libérées. Le dispositif nodal comprend un moyen de commande permettant de sélectionner individuellement une liaison utilisée pour établir un chemin entre le dispositif de communication de la station et le dispositif de communication d'une autre station et un moyen d'interconnexion permettant d'établir un chemin passant par la liaison sélectionnée. Lorsque les identificateurs de l'ensemble des chemins substitués par des chemins de substitution sont donnés, le moyen de commande sélectionne une liaison auxiliaire en fonction de la configuration du système.
PCT/JP2002/011205 2002-10-29 2002-10-29 Dispositif nodal et appareil de soutien a la maintenance/ a l'exploitation WO2004040853A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/JP2002/011205 WO2004040853A1 (fr) 2002-10-29 2002-10-29 Dispositif nodal et appareil de soutien a la maintenance/ a l'exploitation
JP2004547981A JP4002928B2 (ja) 2002-10-29 2002-10-29 ノード装置および保守運用支援装置
US11/066,568 US7835266B2 (en) 2002-10-29 2005-02-28 Node apparatus and maintenance and operation supporting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2002/011205 WO2004040853A1 (fr) 2002-10-29 2002-10-29 Dispositif nodal et appareil de soutien a la maintenance/ a l'exploitation

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US11/066,568 Continuation US7835266B2 (en) 2002-10-29 2005-02-28 Node apparatus and maintenance and operation supporting device

Publications (1)

Publication Number Publication Date
WO2004040853A1 true WO2004040853A1 (fr) 2004-05-13

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Country Status (2)

Country Link
JP (1) JP4002928B2 (fr)
WO (1) WO2004040853A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101043648B (zh) * 2007-03-09 2010-09-15 中国移动通信集团福建有限公司 业务服务交换系统

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4709017B2 (ja) 2006-01-12 2011-06-22 ソニー株式会社 イヤホン装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10190659A (ja) * 1996-10-30 1998-07-21 Nec Corp 通信ネットワーク制御システム
JP2000341309A (ja) * 1999-05-31 2000-12-08 Nec Corp Ｓｄｈ伝送ネットワーク
JP2001156821A (ja) * 1999-11-30 2001-06-08 Toshiba Corp 波長多重リングネットワークシステムとそのノード装置及び障害回復方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10190659A (ja) * 1996-10-30 1998-07-21 Nec Corp 通信ネットワーク制御システム
JP2000341309A (ja) * 1999-05-31 2000-12-08 Nec Corp Ｓｄｈ伝送ネットワーク
JP2001156821A (ja) * 1999-11-30 2001-06-08 Toshiba Corp 波長多重リングネットワークシステムとそのノード装置及び障害回復方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101043648B (zh) * 2007-03-09 2010-09-15 中国移动通信集团福建有限公司 业务服务交换系统

Also Published As

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JPWO2004040853A1 (ja) 2006-03-02
JP4002928B2 (ja) 2007-11-07

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