WO2009049458A1 - Procédé de réduction de capacité en ligne pour un service ininterrompu d'un réseau en anneau à protection d'un segment multiple de transmission optique - Google Patents

Procédé de réduction de capacité en ligne pour un service ininterrompu d'un réseau en anneau à protection d'un segment multiple de transmission optique Download PDF

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Publication number
WO2009049458A1
WO2009049458A1 PCT/CN2007/003982 CN2007003982W WO2009049458A1 WO 2009049458 A1 WO2009049458 A1 WO 2009049458A1 CN 2007003982 W CN2007003982 W CN 2007003982W WO 2009049458 A1 WO2009049458 A1 WO 2009049458A1
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WO
WIPO (PCT)
Prior art keywords
ring
configuration information
network management
protection
network
Prior art date
Application number
PCT/CN2007/003982
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English (en)
Chinese (zh)
Inventor
Xuerong Wang
Original Assignee
Zte Corporation
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 Zte Corporation filed Critical Zte Corporation
Publication of WO2009049458A1 publication Critical patent/WO2009049458A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/08—Intermediate station arrangements, e.g. for branching, for tapping-off
    • H04J3/085—Intermediate station arrangements, e.g. for branching, for tapping-off for ring networks, e.g. SDH/SONET rings, self-healing rings, meashed SDH/SONET networks

Definitions

  • the present invention relates to the field of communications, and in particular, to a service non-disruptive online capacity reduction method for an optical transmission multiplex section protection ring network.
  • BACKGROUND OF THE INVENTION Self-healing capability is an important feature of optical transmission networks.
  • ITU Recommendation ITU-T.841. "Classification and Characteristics of SDH Network Protection Structures" for Synchronous Digital Hierarchy (SDH) / Synchronous Optical Network (Synchronous Optical NETwork, SONET for short)
  • SDH Digital Hierarchy
  • Synchronous Optical Network Synchronous Optical Network
  • SONET Synchronous Optical Network
  • the multiplex section ring protection technology has been widely used. As the scale of operations expands, many operators have proposed the need to expand or shrink, upgrade, or re-plan the multiplex section protection ring. Since such demand is based on a network already in operation, the business must be uninterrupted when re-planning the ring. There are many related patents related to network expansion or upgrade at home and abroad, but there are no related patents related to optical network reduction. Several related patents related to the expansion of optical networks are: The patent No. CN03127250 entitled "Method for expanding the protection subnet in optical networks" provides a protection subnet (including ring protection, chain protection, etc.) from the network management level. The expansion guide reduces problems caused by operational errors and data inconsistency.
  • the patent No. CN200410004982 entitled “A method for expanding the capacity of a wavelength division multiplexing optical network and a capacity expansion device” mainly solves the expansion of the multiplexed cross-device, especially the processing of docking by different manufacturers.
  • the patent No. CN02134320 entitled “A fiber ring network system and its optical add/drop multiplex module and its upgrade and expansion method” mainly solves the problem of how to carry out non-disruptive capacity expansion of services in WDM equipment.
  • the upper and lower optical ports of the WDM device are used as expansion ports.
  • Patent No. CN200410030888 entitled "A Method for Capacity Expansion of Optical Transmission Chain Networks without Service Interruption" for the multiplex section chain Type protection proposes a business uninterrupted expansion method.
  • SUMMARY OF THE INVENTION It is an object of the present invention to provide a service uninterrupted online capacity reduction method for an optical transmission multiplex section protection ring network.
  • the optical non-disruptive online capacity reduction method for protecting the ring network of the optical transmission multiplex section includes the following steps: determining, from the network management layer, a shrinkage section to be reduced, and connecting the reduced-length optical fiber through the network management.
  • the configuration information and the configuration information about the ring-protected relationship of the reduced capacity are sent to the synchronous digital system device; the network management switch is sent in the east-west direction of the reduced-capacity network element by the network management device; the synchronous digital system device receives the network management device.
  • the services of the indented zone are switched to the protection channel according to the configuration information of the fiber connection after the volume reduction and the configuration information about the ring protection relationship after the volume reduction; and whether the volume is to be reduced. All the services of the segment are switched to the protection channel, and the configuration information about the fiber connection after the volume reduction and the configuration information about the ring protection relationship after the volume reduction are correct, and the actual fiber is obtained if the judgment result is yes.
  • the connection is changed to a fused fiber connection.
  • the service non-disruptive online capacity reduction method for the optical transmission multiplex section protection ring network according to the present invention further includes the following steps: after the actual fiber connection is changed to the condensed fiber connection, the network management device is connected to the synchronous digital system device.
  • the device sends a network management switch to delete the command.
  • the synchronous digital system device performs the network management switch command to delete the command. All the services in the reduced capacity segment are switched back to the working channel.
  • the invention performs the ring switching on the services of the eastward and the westbound segments of the network of the constrained network element, and then switches the service to the protection channel, so that the fiber breakage of the indented section is correctly performed on the original service. no effect.
  • FIG. 1 is a flow chart of a service uninterrupted online capacity reduction method of an optical transmission multiplex section protection ring network and a step thereof according to an embodiment of the present invention
  • FIG. 2 is a six-column under normal conditions.
  • FIG. 4 is a two-fiber multiplex section sharing consisting of five network elements in a normal situation.
  • FIG. 5 is a schematic diagram of a two-fiber multiplex section shared ring after the base station E is retracted;
  • FIG. 6 is a schematic diagram of a four-fiber multiplex section shared ring composed of five network elements under normal conditions; Schematic diagram of the four-fiber multiplex section shared ring after the base station E is retracted;
  • FIG. 8 is a schematic diagram of the connection and service direction of the two-fiber or four-fiber multiplex section shared ring shared by the five network elements before sharing the condensed capacity; It is a schematic diagram of the service direction of the multiplex section shared ring after the network management switching command is executed in the westward section of the network element E; FIG. 10 is the complex after the network management switching command is executed in both the west and east sections of the reduced capacity NE E.
  • FIG. 11 is a schematic diagram of the service direction of the multiplex section shared ring after the fiber connection is changed to the condensed fiber connection and the network management pipe switching command is not deleted;
  • FIG. 12 is a schematic diagram of changing the fiber connection. Connected to the fiber after the shrinkage, and delete the network FIG.
  • FIG. 13 is another flowchart of a service non-disruptive online capacity reduction method of the optical transmission multiplex section protection ring network according to the embodiment of the present invention.
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings.
  • the optical non-disruptive online capacity reduction method of the optical transmission multiplex section protection ring network includes the following steps: S102: Determine a shrinkage section to be compressed from the network management layer, and reduce the volume by the network management system.
  • the configuration information of the subsequent optical fiber connection and the configuration information about the ring-protected relationship of the reduced capacity are sent to the synchronous digital system device;
  • S104 the network management switchover command is sequentially sent in the east-west direction of the reduced capacity network element by the network management;
  • S106 The synchronous digital system device receives the network management switch After that, according to the configuration information of the fiber connection after the shrinkage and the configuration information about the ring protection relationship after the contraction, all services in the reduced volume section are switched to the protection channel; and S108, it is judged whether it will be reduced. All the services of the segment are switched to the protection channel.
  • the service non-disruptive online capacity reduction method of the optical transmission multiplex section protection ring network shown in FIG. 1 further includes the following steps: after the actual fiber connection is changed to the condensed fiber connection, the network management device delivers the data to the synchronous digital system device. The network management switch replaces the command, and the synchronous digital system device performs the network management switch command to delete the command. All services in the reduced capacity segment are switched back to the working channel.
  • FIG. 2 is a schematic diagram of a multiplex section shared ring composed of six network elements under normal conditions.
  • Figure 3 shows the transmission path from the working channel to the protection channel after the zone failure between the synchronous digital device network element (NODE) A and the network element NODE B.
  • NODE synchronous digital device network element
  • FIG. 4 is a schematic diagram of a two-fiber multiplex section shared ring composed of five network elements of B, C, D, and E.
  • FIG. 5 is a schematic diagram of a two-fiber multiplex section shared ring formed by retracting the network element E in FIG.
  • FIG. 6 is a schematic diagram of a four-fiber multiplex section shared ring composed of five network elements of eight, B, C, D, and E.
  • FIG. 7 is a schematic diagram of a four-fiber multiplex section shared ring constructed by retracting the network element E in FIG. 6.
  • FIG. 8 is a schematic diagram of a connection and service direction before a shared ring of a two-fiber or four-fiber multiplex section composed of five network elements of eight, B, C, D, and E under normal conditions.
  • FIG. 8 is a schematic diagram of a connection and service direction before a shared ring of a two-fiber or four-fiber multiplex section composed of five network elements of eight, B, C, D, and E under normal conditions.
  • FIG. 9 is a schematic diagram of the service direction of the multiplex section shared ring after the network management switchover command is executed in the westbound section of the condensed network element E.
  • FIG. 10 is a schematic diagram of the service direction of the multiplex section shared ring after the network management switchover command is executed in the eastbound section of the network element.
  • Figure 11 is a multiplex section shared ring after the fiber connection is connected according to the new configuration after shrinking the ring (NODE C eastbound fiber is bidirectionally connected to NODE E westward, bypassing NODE E, and is connected to NODE B westward bidirectionally) The business is moving towards the schematic.
  • Figure 12 is a schematic diagram of the service direction of the multiplex section shared ring after the network management switchover command is deleted. Referring to FIG. 8 to FIG.
  • the specific implementation process of the shared capacity reduction of the two-fiber/four-fiber multiplex section is illustrated: First, as shown in FIG. 8, it is desirable to shrink the NODE E network element between NODE B and NODE C, and the contraction section is the NODE E west and east direction sections, and the two sections are determined by the network management.
  • the fiber connection (S1304) that is, NODE B west direction, NODE E west direction and east direction, NODE C east direction light board slot number and port number.
  • the westbound two-way connection, the NODE E eastbound fiber is bidirectionally connected to the NODE B westward direction, and the NODE B westbound is connected to the NODE C eastbound bidirectional connection, and the modified connection configuration (S1308) is sent from the network management.
  • the ring protection relationship is configured as a ring-protected ring protection relationship (S1310), that is, the NODE E is deleted in the original ring protection relationship.
  • the original Auto Protection Switch Identification (APS ID) of NODE A ⁇ NODE D remains unchanged.
  • the eastward adjacent APS ID of NODE C is the APS ID of NODE B, and the west phase of NODE B.
  • the APS ID is the APS ID of NODE C. This configuration is issued.
  • the network management switchover command is sent through the network management unit to reduce the work of the reduced capacity section to the protection channel (S1312). That is, the network management switchover command is sent down in the NODE B west, so that all services that work through the contraction section are switched to the protection channel.
  • the service transmission path after delivery is shown in Figure 9.
  • the NODE C east sends down the network management switching command, so that all the services that work through the narrowing section are switched to the protection channel.
  • the service transmission path after the delivery is as shown in FIG.
  • the connected section is inverted by the protection channel Back to the working channel, all traffic back to work at this time, volume reduction is completed, as shown in Fig.
  • the switchover of the service from the working channel to the protection channel occurs twice before changing the fiber connection to the reduced ray connection.
  • the service In the fiber-optic connection after the shrinkage, the service is always open, and the network management switchover command is cancelled after the connection and configuration after the contraction is completed.
  • the network management switchover command is cancelled after the connection and configuration after the contraction is completed.
  • the present invention cleverly utilizes the principle of multiplex section ring protection switching.
  • the new ring protection relationship when the new ring protection relationship is configured, the contraction node is deleted, but the other network elements maintain the original APS ID. Therefore, when the new protection relationship occurs, the volume reduction section maintains the forced switching state and is broken. After the optical fiber is removed from the multiplexed ring, the new protection relationship is correctly activated when the forced switching is performed by the NMS. The ring is switched and the service is switched back to work. This ensures that the business will not be interrupted. It can be further proved by the above specific implementation process that the present invention does not require any additional development work and resources, that is, it can provide a simple method of shrinking the service without interruption.
  • the above is only the embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalents, improvements, etc., made within the spirit and scope of the invention are intended to be included within the scope of the appended claims.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Small-Scale Networks (AREA)
  • Optical Communication System (AREA)

Abstract

Un procédé de réduction de capacité en ligne pour un service ininterrompu d'un réseau en anneau à protection d'un segment multiple de transmission optique comprend les étapes suivantes : la détermination du segment de réduction de capacité à réduire, par le niveau de gestion de réseau, et la transmission au dispositif hiérarchique numérique synchrone, par le gestionnaire de réseau, des informations de configuration concernant la connexion de fibres après la réduction de capacité et des informations de configuration concernant la relation de connexion en anneau après la réduction de capacité (S102) ; la transmission, par le gestionnaire de réseau, de l'ordre de commutation à son tour le long des segments transméridionaux (S104) ; la commutation, par le dispositif SDH, de tout le service passant par le segment de réduction de capacité vers le canal de protection, selon les informations de configuration concernant la connexion de fibres après la réduction de capacité et les informations de configuration concernant la relation de connexion en anneau après la réduction de capacité, suite à la réception par le dispositif SDH de l'ordre de commutation du gestionnaire de réseau (S106) ; une évaluation permettant de déterminer si tout le service passant par le segment de réduction de capacité est commuté vers le canal de protection et si les informations de configuration concernant la connexion de fibres après la réduction de capacité et les informations de configuration concernant la relation de connexion en anneau après la réduction de capacité sont correctes, et, si c'est le cas pour les deux, la transformation de la connexion de fibres réelle en connexion de fibres, après la réduction de capacité (S108).
PCT/CN2007/003982 2007-10-15 2007-12-29 Procédé de réduction de capacité en ligne pour un service ininterrompu d'un réseau en anneau à protection d'un segment multiple de transmission optique WO2009049458A1 (fr)

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CN2007101636442A CN101150372B (zh) 2007-10-15 2007-10-15 光传输复用段保护环网的业务无中断在线缩容方法
CN200710163644.2 2007-10-15

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Cited By (1)

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CN115412783A (zh) * 2022-08-25 2022-11-29 云南电网有限责任公司玉溪供电局 一种sdh光传输的网络规划系统及方法

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Publication number Priority date Publication date Assignee Title
CN101610113B (zh) * 2009-06-30 2011-09-21 宁波电业局 一种光纤对接远程控制方法、系统和服务器
CN102857955B (zh) * 2011-06-30 2017-03-22 中兴通讯股份有限公司 一种不断业务的扩缩容方法及装置
CN103188095B (zh) * 2011-12-29 2018-03-20 中兴通讯股份有限公司 一种在分组传送网中处理环网路径的方法、网管及节点设备

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WO2005093543A1 (fr) * 2004-03-23 2005-10-06 Koninklijke Philips Electronics N.V. Systeme de controle d'acces a un reseau d'ordinateurs
CN1708030A (zh) * 2004-06-11 2005-12-14 华为技术有限公司 分组业务网络流量控制系统及其方法
CN1881894A (zh) * 2005-06-17 2006-12-20 上海华为技术有限公司 一种主备备份的方法及系统

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005093543A1 (fr) * 2004-03-23 2005-10-06 Koninklijke Philips Electronics N.V. Systeme de controle d'acces a un reseau d'ordinateurs
CN1708030A (zh) * 2004-06-11 2005-12-14 华为技术有限公司 分组业务网络流量控制系统及其方法
CN1881894A (zh) * 2005-06-17 2006-12-20 上海华为技术有限公司 一种主备备份的方法及系统

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115412783A (zh) * 2022-08-25 2022-11-29 云南电网有限责任公司玉溪供电局 一种sdh光传输的网络规划系统及方法

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