WO2009097783A1 - 一种实现业务保护的方法及装置 - Google Patents

一种实现业务保护的方法及装置 Download PDF

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Publication number
WO2009097783A1
WO2009097783A1 PCT/CN2009/070203 CN2009070203W WO2009097783A1 WO 2009097783 A1 WO2009097783 A1 WO 2009097783A1 CN 2009070203 W CN2009070203 W CN 2009070203W WO 2009097783 A1 WO2009097783 A1 WO 2009097783A1
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WO
WIPO (PCT)
Prior art keywords
pcc
aps
node
channel
protection
Prior art date
Application number
PCT/CN2009/070203
Other languages
English (en)
French (fr)
Inventor
Jun Yan
Gen CHEN
Bo Zhang
Da He
Yu Zeng
Zhenyu Li
Original Assignee
Huawei Technologies Co., Ltd.
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 Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Priority to EP09708248.1A priority Critical patent/EP2242195B1/en
Priority to ES09708248.1T priority patent/ES2546030T3/es
Priority to CN200980102464.0A priority patent/CN101926116B/zh
Publication of WO2009097783A1 publication Critical patent/WO2009097783A1/zh
Priority to US12/848,099 priority patent/US8422363B2/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J3/00Time-division multiplex systems
    • H04J3/16Time-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
    • H04J3/1605Fixed allocated frame structures
    • H04J3/1652Optical Transport Network [OTN]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J3/00Time-division multiplex systems
    • H04J3/02Details
    • H04J3/08Intermediate station arrangements, e.g. for branching, for tapping-off
    • H04J3/085Intermediate station arrangements, e.g. for branching, for tapping-off for ring networks, e.g. SDH/SONET rings, self-healing rings, meashed SDH/SONET networks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J3/00Time-division multiplex systems
    • H04J3/02Details
    • H04J3/14Monitoring arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J2203/00Aspects of optical multiplex systems other than those covered by H04J14/05 and H04J14/07
    • H04J2203/0001Provisions for broadband connections in integrated services digital network using frames of the Optical Transport Network [OTN] or using synchronous transfer mode [STM], e.g. SONET, SDH
    • H04J2203/0057Operations, administration and maintenance [OAM]
    • H04J2203/006Fault tolerance and recovery

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method and apparatus for implementing service protection.
  • OTN Optical Transport
  • Network is a new optical transmission technology with better service scheduling capabilities, networking capabilities, and business protection capabilities. It is the next generation backbone transport network.
  • TN service protection technology for example, optical channel data unit (0DU: Optical Channel Data Unit) shared protection ring (SPRing: Shared Protection)
  • ODUk where k can take values of 1, 2, 3, etc., and different levels are different
  • APS Automatic Protection
  • the APS/PCC is divided by multiframe, and the multiframe alignment signal is used (MFAS: MultiFr ame Alignment).
  • the SNC/N assigns a unique APS/PCC value and specifies that it uses a unique service protection channel, which may result in the inability to distinguish the different ODUk SNC/N service protection.
  • SPRing service protection which channel of the APS/PCC corresponding to the multi-frame value can be used. If the standards defined in the prior art are used, it is possible to cause a channel contention corresponding to the APS/PCC as shown in FIG. 3, and it is also possible to cause multiples as shown in FIG. Business protection has a nested relationship and cannot be distinguished.
  • the main technical problem to be solved by the embodiments of the present invention is to provide a method and device for implementing service protection, thereby ensuring that multiple service protections can exist in the optical transmission network, and different service protections can be smoothly distinguished.
  • the embodiment of the invention provides a method for implementing service protection, including:
  • the selected channel is used for service protection.
  • the embodiment of the invention further provides an apparatus for implementing service protection, including:
  • An available channel determining module configured to determine a channel corresponding to the APS/P CC that all nodes in the service protection path can jointly use;
  • a channel selection module configured to select a channel for performing service protection in a channel corresponding to the APS/PCC determined by the available channel determining module
  • the service protection module is configured to perform service protection by using the channel selected by the channel selection module. It can be seen from the technical solutions provided by the foregoing embodiments of the present invention that, in the embodiment of the present invention, the automatic protection switching APS/protection communication channel credit word that can be commonly used by all nodes in the service protection path is determined. The channel corresponding to the PCC is selected, and the channel for performing service protection is selected in the channel corresponding to the determined APS/PCC, and the selected channel is used for service protection. Therefore, it is ensured that multiple service protections that need to use APS/PCC in the optical transmission network can coexist and smoothly distinguish different service protections.
  • FIG. 1 is a first schematic diagram showing the nesting relationship of various protections in the prior art
  • FIG. 2 is a second schematic diagram showing the nesting relationship of various protections in the prior art
  • FIG. 3 is a third schematic diagram showing the nesting relationship of various protections in the prior art
  • FIG. 4 is a fourth schematic diagram showing the nesting relationship of various protections in the prior art
  • FIG. 5 is a schematic diagram of a first specific application example of the method according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of a second specific application example of the method according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic diagram of a third specific application example of the method according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of the apparatus according to an embodiment of the present invention.
  • the /protective communication channel overhead byte is divided into aliquots, preferably divided into eight, and the APS/PCC byte contents of all multiframes are initialized to zero.
  • the service monitoring mode and service protection of the channel corresponding to the APC/PCC after the division are not specified, and any service monitoring mode may use the multi-frame. Any channel corresponding to any APS/P CC, and any type of service monitoring can use any type of service protection.
  • the performance form of the APS/PCC divided by the multi-frame can be specifically as shown in Table 2:
  • Table 2 Multi-frame positioning information APS/PCC channel corresponds to the APS/PCC channel applicable service protection number 6, 7, 8 ratio connection service monitoring
  • the method for implementing the service protection provided by the embodiment of the present invention may specifically divide the APS/PCC into four copies by using the multi-frame. Or 2 servings.
  • the method for implementing service protection provided by the embodiment of the present invention may initialize the APS/PCC byte content of all multiframes to 0 by using the ODUkP/Client_A_S 0 function. And, by verifying whether the received APS/PCC byte content is always 0, the received APS/PCC byte content is always 0, to determine whether the APS/PCC of the multiframe has been used, The use of a certain APS/PCC after division, and thus Determine the usage of the channel corresponding to the APS/PCC.
  • the method for implementing the service protection provided by the embodiment of the present invention needs to select a specific node in a certain service protection path and perform a configuration operation in the specific application process.
  • the method for implementing service protection provided by the embodiment of the present invention may be applied to an optical channel data unit (ODUk) shared guard ring (SPRing) and an ODUk sub-network connection protection (SNCP). Therefore, the selected node may be specifically in the SNCP. Source node and sink node, and any node on the guard ring in SPRing. Understandably
  • OFDUk optical channel data unit
  • SPRing shared guard ring
  • SNCP ODUk sub-network connection protection
  • the service protection applicable to the service protection method provided by the embodiment of the present invention is not limited to the foregoing service protection, and is not mentioned here.
  • the business unit, the work unit and the protection unit may specifically be a branch unit or a line unit.
  • each unit may be as follows: Select a service unit, a working unit, and a slot of a protection unit, an optical port, and an ODUk of a channel used by the node to be protected.
  • the usage of the channel corresponding to the APS/PCC can be used for all the nodes in the service protection path, that is, whether there is a channel corresponding to an APS/PCC that is idle.
  • the system can perform the verification operation to verify the resources that have been determined to be used, such as the node itself, the channel corresponding to the APS/PCC, and whether there are still conflicts.
  • the usage relationship may be used to check whether a channel corresponding to an APS/PCC is configured by another APS/PCC channel during the operation of the channel corresponding to the APS/PCC. If there is no conflicting use relationship, the check passes; otherwise the check fails.
  • the configuration operation of one node in the service protection is completed. Then, if the service protection has other nodes that need to be configured, the selected node, the configuration node, and the node are re-executed. Query the channel corresponding to an APS/PCC and check whether there is a conflict in the use resource. Generally, for SNCP, the source node and the sink node need to be configured. For SPRing, multiple nodes need to be configured.
  • the system After completing the above-mentioned selection node, configuration node of all nodes in a certain service protection, configuring a channel corresponding to an APS/PCC for the node query, and verifying whether there is a usage conflict operation using the resource, the system may be automatically or The related business cross is configured by the user. It should be noted that the operation of configuring the related services by the system or the user may also be performed before or during the above operations.
  • the method for implementing service protection provided by the embodiment of the present invention is applied to ODUk of different source nodes.
  • SNCP as shown in Figure 5, for example, there is a certain SNCP between nodes and D, and another SNCP exists between nodes B and C.
  • the specific implementation process may include:
  • Step 501 select node eight.
  • node A is the source node
  • node eight can be configured first.
  • Step 502 configuring the node A to receive and send the service unit used by the protected service, and the node A receives
  • the working unit in the direction of the direction and the protection unit are the working unit in the direction of the direction and the protection unit.
  • Step 503 Query a channel corresponding to the APS/PCC that can be used by the node A. [57] In this step, you need to query the channel corresponding to an APS/PCC in which all nodes in the service protection path are idle before they can be used by node A.
  • a specific APS/PC that can be received by the nodes A, B, C, and D can be determined.
  • the channel corresponding to C is used as the channel for service protection.
  • the nodes A, B, C, and D are all idle, then the node A can select the APS.
  • the channel corresponding to /PCC is used as the channel used for service protection.
  • Step 504 Configure the channel corresponding to the idle APS/PCC that is queried to the node A, as the channel to be used for the service protection of the node A.
  • the channel corresponding to the queried idle APS/PCC can be automatically configured by the user or the system to the A node, for example, the channel corresponding to the APS/PCC with the multiframe alignment symbol of 6, 7, and 8 bits is 000. It is used as the channel used for node A to receive and transmit traffic.
  • the system can automatically select any channel corresponding to APS/PCC as the channel used by the A node for service protection according to any rule in the channel corresponding to the free APS/PCC.
  • the service protection After assigning the channel corresponding to the idle APS/PCC to a certain service protection, the service protection will write the APS/PCC byte content as non-zero, indicating that the APS/PCC has been used.
  • Step 505 verifying the resources used by node A.
  • the system may determine, by the system, the resource to be used, including the node A itself, and the channel corresponding to the APS/PCC configured in the step 504 for the A node to perform the verification operation, and determine the node A and In step 504, whether the channel corresponding to the APS/PCC used by the A node is used by other service protection.
  • step 506 is performed, otherwise step 501 is performed.
  • Step 506 the related service is automatically configured by the system or by the user.
  • Step 507 determining whether there are other nodes that need to perform configuration operations.
  • step 508 Since it is the SNCP of the application node A to the node D, after the configuration operation of the source node A is completed, the configuration operation of the sink node D is also performed, and step 508 is performed.
  • Step 508, select node 1).
  • Step 514 determining whether there are other nodes that need to perform configuration operations.
  • step 515 Since the configuration operations of the source node (node A) and the sink node (node D) of a certain SNCP have been completed, it can be determined that no node in the SNCP needs to perform a configuration operation, and then step 515 is performed. The channel corresponding to the determined APS/PCC performs the SNCP.
  • Node B and Node C also have SNCP, it is necessary to configure the source Node B and the sink Node C.
  • Step 517 configure the service unit used by the node B to receive and transmit the protected service, and the node B receives
  • the working unit in the direction of the direction and the protection unit are the working unit in the direction of the direction and the protection unit.
  • Step 518 query the channel corresponding to the APS/PCC that Node B can use.
  • the channel corresponding to a certain APS/PCC is idle by determining whether the byte content of a certain APS/PCC received by the node B and the node C is 0 consecutively. It is still in the state of being used, and the channel corresponding to one of the available APS/PCCs is selected as the channel used for service protection.
  • the source node is A
  • the SNCP where the sink node is D passes through the node C
  • the SNCP has selected the channel corresponding to the APS/PCC with the multiframe alignment symbol of 6, 7, and 8 bits as 000 for service protection
  • Node B and node C can judge through the received signal that the channel corresponding to the APS/PCC with the multiframe alignment symbol of 6, 7, and 8 bits is already used. Therefore, the node B can select the node B and the node.
  • the channels corresponding to other APS/PCCs that are idle are used as channels for performing service protection, such as the channels corresponding to the APS/PCC with idle multiframe alignment symbols of 6, 7, and 8 bytes being 001.
  • Step 519 Configure the channel corresponding to the queried APS/PCC to be used as the channel to be used for the service protection of the Node B.
  • Step 520 Perform a verification operation on the resource used by Node B.
  • step 521 is performed, otherwise step 516 is performed.
  • Step 521 the related services are automatically configured by the system or by the user.
  • Step 522 Determine if there are other nodes that need to be protected.
  • Step 523 Select the node. .
  • Step 529 to determine if there are other nodes that need to be protected.
  • step 530 is performed.
  • the channel corresponding to the determined APS/PCC performs the SNCP.
  • SNCP uses multiframe positioning symbols 6, 7, 8 bits of APS/PCC corresponding channel, node B and node C ODUk
  • the SNCP uses the channel corresponding to the APS/PCC with the multiframe alignment symbol of 6, 7, and 8 bits as the 001.
  • the method for service protection provided by the embodiment of the present invention is applied to the ODUk of the same source node. SNCP case and ODUk applied to different source nodes
  • the situation of SNCP is similar, so it is no longer praised.
  • the method for implementing the service protection provided by the embodiment of the present invention may be applied to the ODUk SNCP of the same source node as shown in FIG. 6.
  • the method for implementing service protection provided by the embodiment of the present invention can also be applied to an ODUk.
  • Any node in SPRing can use the channel corresponding to any divided APS/PCC for service protection.
  • SPRing is the networking situation shown in Figure 3.
  • Nodes A, B, C, D, E, and F belong to the six nodes on the ring protection ring.
  • there is one node X to node Y (the protection channel passes X).
  • the ADUk of A, B, C, and Y) has used the channel corresponding to the APS/PCC with the multiframe alignment symbol of 6, 7, and 8 bits as 000, and has a node M to node N (the protection channel passes through ⁇ 1, F
  • the ODUk of E, N) has used the channel corresponding to the APS/PCC with the multiframe alignment symbol of 6, 7, and 8 bits as 001, and has an ODUk of node N to node 0 (protection channel through N, E, D, 0).
  • the channel corresponding to the AP S/PCC with the multiframe alignment symbol of 6, 7, and 8 bits is used. If a ring network protection of all the nodes is required, the implementation of the service protection method provided by the embodiment of the present invention is specifically implemented. Can include:
  • Step 701 select node eight.
  • any node on the ring network can be retrieved for configuration operation.
  • Step 702 Configure the node A to receive and send the service unit used by the protected service, and the node A receives
  • the configuration process may be: selecting a service unit in the receiving and transmitting direction of the node A, a working unit, and an ODUk of a certain optical port of a slot in the protection unit, for example, selecting one slot and three lights in the foregoing unit. Port, 3-channel ODUk.
  • Step 703 Query a channel corresponding to the APS/PCC that each node can use.
  • the paths of the three service protection channels are (X, A, B, C, Y), (Ms F, E, N) and (N, E, D, ⁇ ), B'J
  • the signal entering node A has used the channel corresponding to the APS/PCC with the multiframe alignment symbol 6, 7, 8 bits as 000; for node B, enter the node B The signal has used the multiframe alignment symbol 6, 7, 8 bits for 000
  • the channel corresponding to the APS/PCC; for the node C, the signal entering the node C has used the channel corresponding to the APS/PCC of the multiframe alignment symbol 6, 7, 8 bits; for the node D, the signal entering the node D has The channel corresponding to the APS/PCC with the multiframe alignment symbol of 6, 7, and 8 bits is 002.
  • the signal from the node N to the node E to be sent to the node D direction has used the multiframe alignment symbol 6. 7 ⁇ 8-bit APS/PCC corresponding channel of 002, the signal sent from node F to node E to be sent to node N direction has used the APS/PCC corresponding to the multiframe alignment symbol 6, 7, 8 bits to 001. Channel; For node F, the signal entering node F has used the channel corresponding to the APS/P CC with the multiframe alignment symbol 6, 7, 8 bits being 001.
  • the channel corresponding to the APS/PCC of the multiframe alignment symbol 6, 7, 8 bits is 000, 001, 002 has been used, then if the APS/PCC is divided into 8 multiframes, then the ring network All nodes also have 5 idle APS/PCC corresponding channels available.
  • Step 704 Configure the queried channel corresponding to the idle APS/PCC to the node A, as the channel corresponding to the APS/PCC used by the node A to receive and transmit services.
  • the node A can select the channel corresponding to the APS/PCC except the multiframe alignment symbol 6, 7, 8 bits are 000, 001, 002, so the idle can be automatically selected by the user or the system.
  • the channel corresponding to the APS/PCC for example, the channel corresponding to the APS/PCC with the positioning symbol of 6, 7, and 8 bits is 003, which is used as the channel used for node A to receive and transmit traffic.
  • the service protection writes the APS/PCC byte contents of the multiframe alignment symbol 6, 7, 8 bits to 003 as non-zero, which means that the APS/PCC has been used.
  • Step 705 the system performs verification.
  • the channel corresponding to the APS/PCC with the multiframe alignment symbol 6, 7, and 8 bits is 003 is configured to the node A, and is used as the channel used by the node A for the service protection in the receiving and transmitting directions, and the system can be connected to the node A. Determining the resources to be used, including the node A itself, and the channel corresponding to the A PS/PCC with the multiframe alignment symbol 6, 7, 8 bits being 003, and determining the node A and the multiframe positioning symbol 6, 7. Whether the channel corresponding to APS/PCC with 8 bits is 003 is used by other service protections, resulting in conflicting use relationships.
  • step 706 is performed, otherwise step 701 is performed.
  • Step 706, the related service is automatically configured by the system or by the user.
  • Step 707 determining whether there are other nodes that need to perform configuration operations.
  • the process of configuring other nodes is similar to the process of configuring operations by node A, and therefore, it is not mentioned.
  • the final result is shown in FIG. 7.
  • the node A, the node B, and the node C use the channel corresponding to the APS/PCC with the multiframe alignment symbol of 6, 7, and 8 bits being 003.
  • the channel corresponding to the APS/PCC with multiframe positioning symbols of 6, 7, and 8 bits is used for other service protection between node X and node Y.
  • the channel corresponding to the APS/PCC with 6, 10, and 8 bits of 00 3 is used for ring network protection.
  • node D and node E using multiframe positioning symbols
  • the channel corresponding to APS/PCC with 8 bits of 002 is used for other service protection between node N and node 0.
  • the channel corresponding to the APS/PCC with the multiframe alignment symbol of 6, 7, and 8 bits is 003 for the ring network protection, and the APS/ with the multiframe alignment symbol of 6, 7, and 8 bits is 001.
  • the channel corresponding to the PCC is used for other service protection between the node M and the node N, thus avoiding the situation where different service protection cannot be distinguished.
  • the method for implementing service protection according to the embodiment of the present invention does not specify the service monitoring mode used by the channel corresponding to a certain APS/PCC after dividing the APS/PCC into multiple shares by using the multi-frame.
  • service protection there are multiple service protections in the OTN, which allows each service protection to select the channel corresponding to the idle APS/PCC for service protection, thus avoiding the situation where different service protection cannot be distinguished.
  • An embodiment of the present invention provides a device for implementing service protection. As shown in FIG. 8, the device includes
  • a partitioning module 810 configured to divide the APS/PCC into multiple copies by multiframe.
  • the division module 810 can specifically divide the APS/PCC into 8 copies, or 4 copies, or 2 copies by multiframe.
  • the division module 810 divides the APS/PCC into a plurality of copies by using the multiframe, it does not specify a certain AP after the division.
  • the service monitoring mode and service protection used by the channel corresponding to the S/PCC which indicates that any service monitoring mode provided by the embodiment of the present invention can use any APS/ after the multi-frame division.
  • the channel corresponding to the PCC, and any type of service monitoring can use any kind of service protection.
  • the initialization module 820 is configured to divide each of the free APS/PCC byte contents after dividing the dividing module. Initialization is zero.
  • Initialization Module 820 can initialize each divided APS/P with the ODUkP/Client_A_So function.
  • the CC byte content is zero.
  • the available channel determining module 830 is configured to determine that all nodes in the service protection path can be used together.
  • the available channel determination module 830 may specifically include:
  • the node selection configuration unit 831 is configured to select a node in the service protection and configure the node.
  • the node selection configuration unit 831 is specifically configured to select a node of a certain feature in a service protection, and configure a service unit used by the node in the direction of receiving and transmitting the protected service, and configure the node to receive and send directions.
  • the working unit and the protection unit may be: selecting the optical channel data unit of a certain optical port of the slot in the service unit, the working unit, and the protection unit.
  • the querying unit 832 is configured to determine whether the certain APS/PCC corresponds to a certain APS/PCC byte content received by all the nodes in the service protection path. Whether the channel can be used.
  • the channel selection module 840 is configured to select a channel for service protection in the channel corresponding to the APS/PCC determined by the available channel determining module.
  • the channel selection module 840 may specifically include:
  • the configuration unit 841 is configured to configure, by the query unit 832, a channel corresponding to an idle APS/PCC to the node selected by the node selection configuration unit 831, as a channel used by the node for service protection.
  • the check unit 842 is configured to check the node selected by the node selection configuration unit 831, and the configuration unit 833 determines whether the channel corresponding to a certain APS/PCC used is used by other service protection.
  • the determining unit 843 is configured to determine, after the verification unit 834 passes the verification, whether there are other nodes in the service protection that need to perform a node selection configuration operation and determine a channel operation corresponding to the APS/PCC.
  • the service protection module 850 is configured to select a channel corresponding to the APS/PCC determined by the verification determining unit 832 for service protection.
  • the apparatus for implementing service protection provided by the embodiment of the present invention does not specify the service monitoring mode used by the channel corresponding to a certain APS/PCC after dividing the APS/PCC into multiple copies by using the multi-frame. as well as Service protection. In this way, when there are multiple service protections in the OTN, each service protection can select the channel corresponding to the idle APS/PCC for service protection, thus avoiding the situation where different service protection cannot be distinguished.

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Abstract

一种实现业务保护的方法及装置,通过确定业务保护路径中所有节点能够共同使用的自动保护倒换APS/保护通信信道开销字节PCC对应的通道,并在所述确定的APS/PCC对应的通道中选择用于进行业务保护的通道,利用选择的通道进行业务保护。从而确保了在光传输网中多个需要使用APS/PCC的业务保护可以共存,并顺利的区分不同的业务保护。

Description

说明书 一种实现业务保护的方法及装置
[1] 技术领域
[2] 本发明涉及通信技术领域, 尤其涉及一种实现业务保护的方法及装置。
[3] 发明背景
[4] 从同步光网络 (SONET: Synchronous Optical
Network) /同步数字体系 (SDH: Synchronous Digital
Hierarchy) 技术发展而来的光传送网 (OTN: Optical Transport
Network) 是一种新的光传送技术, 具有比较好的业务调度能力、 组网能力、 业 务保护能力, 是下一代的骨干传送网。
[5] 随着 0TN技术的发展, 为了有效地提高业务的生存能力, 出现了各种方式的 0
TN业务保护技术, 比如, 适合分布式业务应用场景的光信道数据单元 (0DU: Optical Channel Data Unit) 共享保护环 (SPRing: Shared Protection
Ring) 技术, 以及 OTN电层最常用的 ODUk子网连接保护 (SNCP: Subnetwork Connection Protect) 技术等。
[6] 在实际应用中, ODUk (其中, k可取值 1、 2、 3等表示级别, 且不同的级别速 率不同) 的路径 (Trail) 上可以有多个业务保护同吋配置使用。 而且, 多个业务 保护可能都需要使用自动保护倒换 (APS: Automatic Protection
Switching) 协议。 然而, ODUk帧结构中只有唯一的 4个自动保护倒换 (APS) I 保护通信信道幵销字节 (PCC: Protection Communication
Channel) , 用于不同业务保护, 因此, 如何划分 APS/PCC给多个业务保护使用 成为目前需要解决的问题。
[7] 现有技术中, 釆用通过复帧划分 APS/PCC , 用复帧定位信号 (MFAS: MultiFr ame Alignment
Signal) 的 6、 7、 8比特的不同取值来划分 APS/PCC , 将 APS/PCC等分为 8份, 并 设定等分后 APS/PCC通道对应的不同连接业务监视, 以及可釆用的业务保护。
[8] 但是, 由于在实际应用过程中, 可能存在多个 ODUk非介入监视的子网连接保 护 (SNC/N: Subnetwork Connection/Non-intrusive monitoring
) 同吋对整个 ODUk通道 (ODUk Path) 进行通道监视 (PM: Path
Monitoring) , 这就有可能导致多个业务保护出现嵌套关系。 如附图 1、 2所示。 那么, 按现有技术中定义的标准, 给 ODUk
SNC/N分配唯一的 APS/PCC取值, 指定其使用唯一的业务保护通道, 就有可能导 致无法区分出上述不同的 ODUk SNC/N业务保护。
而且, 现有技术中并没有明确当使用 ODUk
SPRing业务保护吋, 可以釆用哪一个复帧取值的 APS/PCC对应的通道。 如果釆 用现有技术中定义的标准, 则有可能导致出现如附图 3所示的对 APS/PCC对应的 通道争用的情况, 而且, 还有可能导致如附图 4所示的多个业务保护出现嵌套关 系, 无法进行区分的情况。
发明内容
本发明实施例要解决的主要技术问题是提供一种实现业务保护的方法及装置, 从而确保了光传输网内可同吋存在多个业务保护, 并顺利的区分不同的业务保 护。
本发明实施例提供了一种实现业务保护的方法, 包括:
确定业务保护路径中所有节点能够共同使用的自动保护倒换 APS/保护通信信道 幵销字节 PCC对应的通道;
在所述确定的 APS/PCC对应的通道中选择进行业务保护的通道;
利用选择的所述通道进行业务保护。
本发明实施例还提供了一种实现业务保护的装置, 包括:
可用通道确定模块, 用于确定业务保护路径中所有节点能够共同使用的 APS/P CC对应的通道;
通道选择模块, 用于在所述可用通道确定模块确定的 APS/PCC对应的通道中选 择进行业务保护的通道;
业务保护模块, 用于釆用所述通道选择模块选择的所述通道进行业务保护。 由上述本发明实施例提供的技术方案可以看出, 本发明实施例中, 通过确定业 务保护路径中所有节点能够共同使用的自动保护倒换 APS/保护通信信道幵销字 节 PCC对应的通道, 并在所述确定的 APS/PCC对应的通道中选择用于进行业务保 护的通道, 利用选择的通道进行业务保护。 从而确保了在光传输网中多个需要 使用 APS/PCC的业务保护可以共存, 并顺利的区分不同的业务保护。
[21] 附图简要说明
[22] 图 1为现有技术中各种保护出现嵌套关系第一示意图;
[23] 图 2为现有技术中各种保护出现嵌套关系第二示意图;
[24] 图 3为现有技术中各种保护出现嵌套关系第三示意图;
[25] 图 4为现有技术中各种保护出现嵌套关系第四示意图;
[26] 图 5为本发明实施例提供的所述方法第一具体应用实例示意图;
[27] 图 6为本发明实施例提供的所述方法第二具体应用实例示意图;
[28] 图 7为本发明实施例提供的所述方法第三具体应用实例示意图;
[29] 图 8为本发明实施例提供的所述装置结构示意图。
[30] 实施本发明的方式
[31] 本发明实施例提供的实现业务保护的方法中, 通过复帧将自动保护倒换 (APS
/保护通信信道开销字节 (PCC) 划分为若干等份, 较佳的方式划分为 8份, 并初 始化所有复帧的 APS/PCC字节内容为 0。 需要说明的是, 本发明实施例提供的实 现业务保护的方法中, 并不指定划分后 APC/PCC对应的通道釆用的业务监视方 式以及业务保护, 任一种业务监视方式可以使用通过复帧划分后的任一个 APS/P CC对应的通道, 并且, 任一种业务监视方式可以使用任一种业务保护。
[32] 本发明实施例提供的实现业务保护方法中, 通过复帧划分后的 APS/PCC的表现 形式具体可如表 2所示:
[33] 表 2 复帧定位信 APS/PCC通道对应 APS/PCC通道可应用的业务保护 号 6、 7、 8比 的连接业务监控
0 0 0 任一种业务监视方 任一种业务保护
0 0 1 任一种业务监视方 任一种业务保护
0 1 0 任一种业务监视方 任一种业务保护
0 1 1 任一种业务监视方 任一种业务保护
1 0 0 任一种业务监视方 任一种业务保护
1 0 1 任一种业务监视方 任一种业务保护
1 1 0 任一种业务监视方 任一种业务保护
1 1 1 任一种业务监视方 任一种业务保护
[35] 由于在实际应用中, 各种业务保护出现嵌套或者重叠的情况不会很多, 因此, 本发明实施例提供的实现业务保护方法具体也可以通过复帧将 APS/PCC划分为 4 份或者 2份。
[36] 本发明实施例提供的实现业务保护方法, 可以釆用 ODUkP/Client_A_S0功能初 始化所有复帧的 APS/PCC字节内容为 0。 并且, 通过验证接收到的多帧 (具体可 为 2、 3帧, 或者其它数目的帧) APS/PCC字节内容是否一直为 0, 来判断该复帧 的 APS/PCC是否已经被使用, 得到划分后的某个 APS/PCC的使用情况, 进而确 定该 APS/PCC对应的通道的使用情况。
[37] 本发明实施例提供的实现业务保护的方法在具体应用过程中, 首先需要选择某 个业务保护路径中的某个特定的节点, 并对其进行配置操作。 由于本发明实施 例提供的实现业务保护的方法可以适用于光信道数据单元 (ODUk) 共享保护环 (SPRing) , 以及 ODUk子网连接保护 (SNCP) , 因此, 选择的节点具体可以 是 SNCP中的源节点和宿节点, 以及 SPRing中保护环上任一节点。 可以理解的是
, 本发明实施例提供的实现业务保护方法适用的业务保护并不仅限于上述业务 保护, 这里不再一一赞述。
[38] 当选取某个节点后, 配置该节点收、 发方向被保护的业务所使用的业务单元, 以及配置该节点收、 发方向的工作单元和保护单元。
[39] 业务单元、 工作单元以及保护单元, 具体可以为支路单元或线路单元。
[40] 配置各个单元的过程具体可以为: 选择节点收、 发方向被保护的业务所使用的 业务单元、 工作单元以及保护单元的某个槽位、 某个光口、 某通道的 ODUk。
[41] 对于 SNCP, 收、 发方向可各有 1个工作单元和 1个保护单元;
[42] 对于 SPRing, 收、 发方向可各有 2个工作单元和 2个保护单元, 其中, 1个工作 单元和 1个保护单元向西向发送, 1个工作单元和 1个保护单元向东向发送。
[43] 需要说明的是, 对于上述各个单元的配置工作, 可以不分先后顺序, 可同吋进 行, 也可分幵进行。
[44] 当完成对上述各个单元的配置操作后, 査询业务保护路径中所有节点可用 APS/ PCC对应的通道的使用情况, 即确定是否还有空闲的某个 APS/PCC对应的通道。
[45] 具体的, 对于 SNCP, 需要综合査询业务保护路径上所有节点 APS/PCC对应的 通道的使用情况, 只有在源节点、 宿节点以及其他所有节点都为空闲的某个 APS /PCC对应的通道, 才可以被所述源节点和宿节点所使用, 进行业务保护操作; 对于 SPRing, 需要査询保护环网中所有节点的 APS/PCC通道的使用情况。 只有 在所有节点都为空闲的某个 APS/PCC对应的通道才可以为保护环网中特定的某 个节点所使用, 进行业务保护操作。
[46] 在査询到符合上述条件的 APS/PCC对应的通道后, 将 APS/PCC对应的通道同吋 配置至节点的收、 发方向。 [47] 在完成为节点配置 APS/PCC对应的通道后, 可由系统进行校验操作, 校验已经 确定使用的资源, 比如节点本身、 APS/PCC对应的通道, 是否还存在可能引起 互相冲突的使用关系, 具体可以为校验在对选取的节点进行配置某个 APS/PCC 对应的通道操作过程中, 该节点以及被配置的某个 APS/PCC对应的通道是否又 被其他业务保护所使用。 若不存在引起互相冲突的使用关系, 则校验通过; 否 则校验不通过。
[48] 在完成上述操作后, 即完成了业务保护中某一个节点的配置操作, 此吋, 若业 务保护还有其他节点需要进行配置操作, 则重新执行上述选择节点、 配置节点 、 为节点査询配置某个 APS/PCC对应的通道以及校验使用资源是否存在使用冲 突的操作。 通常情况下, 对于 SNCP, 需要对源节点和宿节点进行配置操作, 对 于 SPRing, 则有多个节点需要配置操作。
[49] 在完成某个业务保护中所有节点的上述选择节点、 配置节点、 为节点査询配置 某个 APS/PCC对应的通道以及校验使用资源是否存在使用冲突的操作后, 可由 系统自动或者由用户配置相关业务交叉。 需要说明的是, 由系统或用户配置相 关业务交叉的操作, 也可在进行上述操作之前或之中进行。
[50] 为了便于理解, 下面结合附图, 对本发明实施例提供的实现业务保护的方法应 用于不同的场景进行详细的表述。
[51] 本发明实施例提供的实现业务保护的方法应用于不同源节点的 ODUk
SNCP, 如图 5所示, 比如节点 、 D之间存在某一 SNCP, 节点 B、 C之间存在另 一 SNCP吋, 具体实现过程可以包括:
[52] 步骤 501, 选择节点八。
[53] 由于节点 A为源节点, 因此, 可以先配置节点八。
[54] 步骤 502, 配置节点 A收、 发方向被保护业务所使用的业务单元, 以及节点 A收
、 发方向的工作单元以及保护单元。
[55] 此步骤中, 可以选择节点 A收、 发方向的业务单元、 工作单元以及保护单元所 要使用的某槽位某光口某通道的 ODUk, 比如上述单元中的 3槽位、 1光口、 1通 道的 ODUk。
[56] 步骤 503, 査询节点 A可使用的 APS/PCC对应的通道。 [57] 此步骤中, 需要査询在该业务保护路径中所有节点都为空闲的某个 APS/PCC对 应的通道, 才可以被节点 A所使用。
[58] 在本发明实施例中, 具体的可以通过判断节点 A、 B、 C、 D接收的某个 APS/PC
C的字节内容是否连续若干帧都为 0 (APS/PCC的字节内容初始化为 0的过程可在 选择节点之前完成, 且初始化过程可如上所述, 这里不再赞述) , 来确定某个 A
PS/PCC对应的通道处于空闲还是被使用的状态, 并且, 选取空闲的某个 APS/PC
C对应的通道作为进行业务保护所使用的通道。
[59] 例如, 若此吋査询到复帧定位符号 6、 7、 8比特为 000的 APS/PCC对应的通道在 节点 A、 B、 C、 D均为空闲, 则节点 A可以选择该 APS/PCC对应的通道作为业务 保护所使用的通道。
[60] 步骤 504, 将査询到的空闲 APS/PCC对应的通道配置给节点 A, 作为节点 A收、 发方向进行业务保护所要使用的通道。
[61] 此步骤中, 可由用户或系统自动将査询到的空闲 APS/PCC对应的通道配置给 A 节点, 比如复帧定位符号 6、 7、 8比特为 000的 APS/PCC对应的通道, 作为节点 A 收、 发方向进行业务保护所使用的通道。
[62] 当然, 也可以由系统自动在空闲的 APS/PCC对应的通道中, 按任意规则, 选择 任意的 APS/PCC对应的通道作为 A节点进行业务保护所使用的通道。
[63] 在将空闲的 APS/PCC对应的通道分配给某一个业务保护所使用后, 该业务保护 会将该 APS/PCC字节内容写为非零, 即表示该 APS/PCC已经被使用。
[64] 步骤 505, 对节点 A所使用的资源进行校验操作。
[65] 此步骤中, 具体可由系统对节点 A确定所要使用的资源, 包括节点 A本身, 以 及步骤 504中配置给 A节点所使用的 APS/PCC对应的通道进行校验操作, 判断节 点 A以及步骤 504中配置给 A节点所使用的 APS/PCC对应的通道是否被其他业务保 护所使用。
[66] 若不存在相互冲突的使用关系, 则校验通过, 执行步骤 506, 否则执行步骤 501
[67] 步骤 506, 由系统自动或用户配置相关业务交叉。
[68] 步骤 507, 判断是否还有其它节点需要进行配置操作。 [69] 由于是应用节点 A到节点 D的 SNCP, 所以, 在完成源节点 A的配置操作后, 还 需进行宿节点 D的配置操作, 执行步骤 508。
[70] 步骤 508, 选择节点1)。
[71] 由于对节点 D的配置操作 (步骤 508至步骤 513) 与节点 A的配置操作 (步骤 501 至步骤 506) 类似, 因此不再赞述。
[72] 步骤 514, 判断是否还有其它节点需要进行配置操作。
[73] 由于已经完成了某个 SNCP的源节点 (节点 A) 和宿节点 (节点 D) 的配置操作 , 因此, 可以判断到该 SNCP中没有节点需要进行配置操作, 然后执行步骤 515 , 釆用确定的 APS/PCC对应的通道进行该 SNCP。
[74] 由于节点 B与节点 C同样存在 SNCP, 因此, 还需对源节点 B和宿节点 C进行配置 操作。
[75] 步骤 516, 选择节点^
[76] 步骤 517, 配置节点 B收、 发方向被保护业务所使用的业务单元, 以及节点 B收
、 发方向的工作单元以及保护单元。
[77] 此步骤中, 可以选择节点 B收、 发方向的业务单元、 工作单元以及保护单元所 要使用的某槽位某光口某通道的 ODUk, 比如上述单元中的 2槽位、 2光口、 2通 道的 ODUk。
[78] 步骤 518, 査询节点 B可使用的 APS/PCC对应的通道。
[79] 此步骤中, 需要査询在该业务保护路径中所有节点都为空闲的某个 APS/PCC对 应的通道, 才可以被节点 B所使用。
[80] 在本发明实施例中, 具体可以通过判断节点 B和节点 C接收的某个 APS/PCC的 字节内容是否连续若干帧都为 0, 来确定某个 APS/PCC对应的通道处于空闲还是 被使用的状态, 并且, 选取空闲的某个 APS/PCC对应的通道作为进行业务保护 所使用的通道。
[81] 由于源节点为 A, 宿节点为 D的 SNCP经过节点 C, 而且该 SNCP已经选取了 复帧定位符号 6、 7、 8比特为 000的 APS/PCC对应的通道进行业务保护, 所以, 节点 B和节点 C通过接收到的信号可以判断到, 复帧定位符号 6、 7、 8比特为 000 的 APS/PCC对应的通道已经被使用, 因此, 节点 B可以选取此吋在节点 B和节点 C都为空闲的其他 APS/PCC对应的通道作为进行业务保护所使用的通道, 比如空 闲的复帧定位符号 6、 7、 8字节为 001的 APS/PCC对应的通道。
[82] 步骤 519, 将査询到的空闲 APS/PCC对应的通道配置给节点 B, 作为节点 B收、 发方向进行业务保护所要使用的通道。
[83] 此步骤同步骤 504。
[84] 步骤 520, 对节点 B所使用的资源进行校验操作。
[85] 此步骤同步骤 505。
[86] 若校验通过, 则执行步骤 521, 否则执行步骤 516。
[87] 步骤 521, 由系统自动或用户配置相关业务交叉。
[88] 步骤 522, 判断是否还有其它节点需要进行保护配置。
[89] 由于是节点 B到节点 C的 SNCP, 所以, 在完成源节点 B的配置操作后, 还需进 行宿节点 C的配置操作, 执行步骤 523。
[90] 步骤 523, 选择节点。。
[91] 由于对节点 C的配置操作 (步骤 523至步骤 528) 与节点 B的配置操作 (步骤 516 至步骤 521) 类似, 因此不再赞述。
[92] 步骤 529, 判断是否还有其它节点需要进行保护配置。
[93] 由于已经完成了某个 SNCP的源节点 (节点 B) 和宿节点 (节点 C) 的配置操作 , 因此, 可以判断到该 SNCP中没有节点需要进行配置操作, 然后执行步骤 530 , 釆用确定的 APS/PCC对应的通道进行该 SNCP。
[94] 在完成步骤 501至步骤 530后, 此吋的结果可如附图 5所示。 从中可以看出, 此 吋, 节点 A和节点 D之间的 ODUk
SNCP使用复帧定位符号 6、 7、 8比特为 000的 APS/PCC对应的通道, 节点 B和节 点 C之间的 ODUk
SNCP使用复帧定位符号 6、 7、 8比特为 001的 APS/PCC对应的通道, 其中节点 B 、 C间同吋存在两个 APS/PCC对应的通道, 虽然各个业务保护之间仍然出现嵌套 关系, 但由于各个业务保护所使用的通道不同, 因此, 避免了出现无法区分各 个保护的情况。
[95] 由于本发明实施例提供的业务保护的方法应用于相同源节点的 ODUk SNCP的情况与应用于不同源节点的 ODUk
SNCP的情况类似, 因此不再赞述。 且本发明实施例提供的实现业务保护的方法 应用于相同源节点的 ODUk SNCP的结果可如附图 6所示。
[96] 本发明实施例提供的实现业务保护的方法, 也可应用于 ODUk
SPRing中, 如果当前 ODUk SPRing中没有业务保护正在进行, 贝 l」ODUk
SPRing中的任一节点可釆用划分后的任一 APS/PCC对应的通道进行业务保护。
[97] 如果当前 ODUk
SPRing为附图 3所示的组网情况, 节点 A、 B、 C、 D、 E、 F是属于环网保护环上 的六个节点, 其中, 有一个节点 X至节点 Y (保护通道经过 X、 A、 B、 C、 Y) 的 ODUk已经使用了复帧定位符号 6、 7、 8比特为 000的 APS/PCC对应的通道, 有一 个节点 M至节点 N (保护通道经过^1、 F、 E、 N) 的 ODUk已经使用了复帧定位 符号 6、 7、 8比特为 001的 APS/PCC对应的通道, 有一个节点 N至节点 0 (保护通 道经过 N、 E、 D、 0) 的 ODUk已经使用了复帧定位符号 6、 7、 8比特为 002的 AP S/PCC对应的通道, 则当需要一个经过所有节点的环网保护吋, 本发明实施例提 供的实现业务保护方法具体实现过程可以包括:
[98] 步骤 701, 选择节点八。
[99] 由于本发明实施例是应用于环网保护, 因此可以釆取环网上的任一节点进行配 置操作。
[100] 步骤 702, 配置节点 A收、 发方向被保护业务所使用的业务单元, 以及节点 A收
、 发方向的工作单元和保护单元。
[101] 所述配置过程具体可以为选择节点 A收、 发方向的业务单元、 工作单元、 保护 单元的某槽位某光口某通道的 ODUk, 比如选择上述单元中的 1槽位、 3光口、 3 通道的 ODUk。
[102] 步骤 703, 査询各个节点可以使用的 APS/PCC对应的通道。
[103] 由于此吋环网中已经存在三个业务保护, 且三个业务保护通道的路径分别为 ( X、 A、 B、 C、 Y) , (Ms F、 E、 N) 和 (N、 E、 D、 θ) , 贝 'J对于节点 A, 进 入节点 A的信号已经使用了复帧定位符号 6、 7、 8比特为 000的 APS/PCC对应的通 道; 对于节点 B, 进入节点 B的信号已经使用了复帧定位符号 6、 7、 8比特为 000 的 APS/PCC对应的通道; 对于节点 C, 进入节点 C的信号已经使用了复帧定位符 号 6、 7、 8比特为 000的 APS/PCC对应的通道; 对于节点 D, 进入节点 D的信号已 经使用了复帧定位符号 6、 7、 8比特为 002的 APS/PCC对应的通道; 对于节点 E, 由节点 N过来进入节点 E要送到节点 D方向的信号已经使用了复帧定位符号 6、 7 、 8比特为 002的 APS/PCC对应的通道, 由节点 F过来进入节点 E要送到节点 N方向 的信号已经使用了复帧定位符号 6、 7、 8比特为 001的 APS/PCC对应的通道; 对 于节点 F, 进入节点 F的信号已经使用了复帧定位符号 6、 7、 8比特为 001的 APS/P CC对应的通道。 综合所有节点的情况看, 复帧定位符号 6、 7、 8比特为 000, 001 , 002的 APS/PCC对应的通道已经被使用了, 那么如果将 APS/PCC划分为 8复帧 , 则环网上所有节点都还存在 5个空闲的 APS/PCC对应的通道可以使用。
[104] 步骤 704, 将査询到的空闲 APS/PCC对应的通道配置给节点 A, 作为节点 A收、 发方向进行业务保护所使用的 APS/PCC对应的通道。
[105] 由于在完成步骤 703后已经确认节点 A可选取除复帧定位符号 6、 7、 8比特为 000 、 001、 002以外的 APS/PCC对应的通道, 因此, 可由用户或系统自动选取空闲 的 APS/PCC对应的通道, 比如定位符号 6、 7、 8比特为 003的 APS/PCC对应的通 道作为节点 A收、 发方向进行业务保护所使用的通道。
[106] 同吋, 业务保护将复帧定位符号 6、 7、 8比特为 003的 APS/PCC字节内容写为非 零, 即表示该 APS/PCC已经被使用。
[107] 步骤 705, 系统进行校验。
[108] 在将复帧定位符号 6、 7、 8比特为 003的 APS/PCC对应的通道配置给节点 A, 作 为节点 A收、 发方向进行业务保护所使用的通道后, 可由系统对节点 A确定所要 使用的资源, 包括节点 A本身, 以及所述的复帧定位符号 6、 7、 8比特为 003的 A PS/PCC对应的通道进行校验操作, 判断节点 A以及复帧定位符号 6、 7、 8比特为 003的 APS/PCC对应的通道是否存在被其他业务保护所使用从而造成互相冲突的 使用关系。
[109] 若校验通过, 则执行步骤 706, 否则执行步骤 701。
[110] 步骤 706, 由系统自动或用户配置相关业务交叉。
[111] 步骤 707, 判断是否还有其它节点需要进行配置操作。 [112] 对其它节点进行配置操作的过程与节点 A进行配置操作的过程类似, 因此, 不 再赞述。
[113] 在完成上述配置操作后, 最后结果附图 7所示, 节点 A、 节点 B和节点 C之间, 使用复帧定位符号 6、 7、 8比特为 003的 APS/PCC对应的通道用于环网保护, 使 用复帧定位符号 6、 7、 8比特为 000的 APS/PCC对应的通道用于节点 X到节点 Y之 间的其他的业务保护。 节点 C和节点 D之间, 使用复帧定位符号 6、 7、 8比特为 00 3的 APS/PCC对应的通道用于环网保护。 节点 D和节点 E之间, 使用复帧定位符号
6、 7、 8比特为 003的 APS/PCC对应的通道用于环网保护, 使用复帧定位符号 6、
7、 8比特为 002的 APS/PCC对应的通道用于节点 N到节点 0之间的其他的业务保护 。 节点 E和节点 F之间, 使用复帧定位符号 6、 7、 8比特为 003的 APS/PCC对应的 通道用于环网保护, 使用复帧定位符号 6、 7、 8比特为 001的 APS/PCC对应的通 道用于节点 M到节点 N之间的其他的业务保护, 这样, 就避免了无法区分出不同 业务保护的情况。
[114] 本发明实施例提供的实现业务保护的方法, 在通过复帧将 APS/PCC划分为若干 份后, 并不指定划分后的某个 APS/PCC对应的通道所釆用的业务监视方式以及 业务保护, 这样, 在 OTN中存在多个业务保护吋, 可以让每一个业务保护选择 空闲的 APS/PCC对应的通道进行业务保护, 从而避免了无法区分不同业务保护 的情况。
[115] 本发明实施例提供了一种实现业务保护的装置, 如附图 8所示, 所述装置包括
[116] 1) 划分模块 810, 用于通过复帧将 APS/PCC划分若干份。
[117] 划分模块 810具体可以通过复帧将 APS/PCC划分为 8份, 或 4份, 或 2份。
[118] 划分模块 810通过复帧将 APS/PCC划分为若干份后, 并不指定划分后的某个 AP
S/PCC对应的通道所釆用的业务监视方式和业务保护, 这说明, 本发明实施例提 供的实现业务保护装置中, 任一种业务监视方式可以使用通过复帧划分后的任 一个 APS/PCC对应的通道, 并且, 任一种业务监视方式可以使用任一种业务保 护。
[119] 2) 初始化模块 820, 用于将划分模块划分后的每一份空闲 APS/PCC字节内容初 始化为零。
[120] 初始化模块 820可以釆用 ODUkP/Client_A_So功能初始化划分后的每一份 APS/P
CC字节内容为零。
[121] 3) 可用通道确定模块 830, 用于确定业务保护路径中所有节点能够共同使用的
APS/PCC对应的通道。
[122] 可用通道确定模块 830具体可以包括:
[123] 节点选择配置单元 831, 用于选取业务保护中的某个节点, 并配置所述节点。
[124] 节点选择配置单元 831具体用于选取某个业务保护中的某个特点的节点, 并配 置该节点收、 发方向被保护业务所使用的业务单元, 以及配置所述节点收、 发 方向的工作单元以及保护单元, 具体可以为: 选择所述业务单元、 工作单元以 及保护单元中的某槽位某光口某通道的光信道数据单元。
[125] 査询单元 832, 用于通过査询所述业务保护路径中所有节点接收的某个划分后 的 APS/PCC字节内容是否连续若干帧为零, 确定所述某个 APS/PCC对应的通道 是否能够使用。
[126] 4) 通道选择模块 840, 用于在可用通道确定模块确定的 APS/PCC对应的通道中 选择进行业务保护的通道。
[127] 通道选择模块 840具体可以包括:
[128] 配置单元 841, 用于将査询单元 832査询到的某个空闲 APS/PCC对应的通道配置 给节点选择配置单元 831所选择的节点, 作为该节点进行业务保护所使用的通道
[129] 校验单元 842, 用于校验所述节点选择配置单元 831选择使用的节点, 以及配置 单元 833确定使用的某个 APS/PCC对应的通道是否被其他业务保护所使用。
[130] 判断单元 843, 用于在校验单元 834校验通过后, 判断业务保护中是否还有其它 节点需要进行节点选择配置操作以及确定 APS/PCC对应的通道操作。
[131] 4) 业务保护模块 850, 用于选取校验确定单元 832确定的 APS/PCC对应的通道 进行业务保护。
[132] 本发明实施例提供的实现业务保护的装置, 在通过复帧将 APS/PCC划分为若干 份后, 并不指定划分后的某个 APS/PCC对应的通道所釆用的业务监视方式以及 业务保护, 这样, 在 OTN中存在多个业务保护时, 可以让每一个业务保护选择 空闲的 APS/PCC对应的通道进行业务保护, 从而避免了无法区分不同业务保护 的情况。
以上所述, 仅为本发明较佳的具体实施方式, 但本发明的保护范围并不局限于 此, 任何熟悉本技术领域的技术人员在本发明揭露的技术范围内, 可轻易想到 的变化或替换, 都应涵盖在本发明的保护范围之内。 因此, 本发明的保护范围 应该以权利要求的保护范围为准。

Claims

权利要求书
[1] 一种实现业务保护的方法, 其特征在于, 包括:
确定业务保护路径中所有节点能够共同使用的自动保护倒换 APS/保护通信 信道开销字节 PCC对应的通道;
在所述确定的 APS/PCC对应的通道中选择进行业务保护的通道; 利用选择的所述通道进行业务保护。
[2] 根据权利要求 1所述的方法, 其特征在于,
所述方法在确定业务保护中路径所有节点能够共同使用的 APS/PCC对应的 通道之前包括:
通过复帧将所述 APS/PCC划分为 8份、 或 4份、 或 2份, 且划分后的每一份 A PS/PCC对应相应的通道, 所述每一份通道能够被任一种业务监视以及任一 种业务保护所使用。
[3] 根据权利要求 2所述的方法, 其特征在于, 所述通过复帧划分所述 APS/PCC 的过程包括: 将划分后的每一份空闲 APS/PCC字节内容初始化为零。
[4] 根据权利要求 3所述的方法, 其特征在于, 所述确定业务保护路径中所有节 点能够共同使用的 APS/PCC对应的通道的过程包括:
选择所述业务保护中的某个节点;
配置所述节点收、 发方向被保护业务所使用的业务单元, 以及配置所述节 点收、 发方向的工作单元以及保护单元。
[5] 根据权利要求 4所述的方法, 其特征在于, 所述配置所述节点收、 发方向被 保护业务所使用的业务单元, 以及配置所述节点收、 发方向的工作单元以 及保护单元的过程包括:
选择所述业务单元、 工作单元以及保护单元中的某槽位某光口某通道的光 信道数据单元。
[6] 根据权利要求 4所述的方法, 其特征在于, 所述确定业务保护路径中所有节 点能够共同使用的 APS/PCC对应的通道的过程包括: 通过査询所述业务保 护路径中所有节点接收的某个 APS/PCC字节内容是否连续若干帧为零, 确 定所述 APS/PCC对应的通道是否能够使用。
[7] 根据权利要求 6所述的方法, 其特征在于, 所述在所述确定的 APS/PCC对应 的通道中选择进行业务保护的通道的过程包括: 在确定所述 APS/PCC对应 的通道能够使用后, 将所述 APS/PCC对应的通道配置给所述选择的节点。
[8] 根据权利要求 7所述的方法, 其特征在于, 所述方法在将所述 APS/PCC对应 的通道配置给所述选择的节点之后还包括: 校验所述选择的业务保护路径 中的某个节点, 以及配置给所述节点的 APS/PCC对应的通道是否被其他业 务保护所使用。
[9] 根据权利要求 8所述的方法, 其特征在于, 所述方法在所述校验操作之后还 包括: 判断所述业务保护中是否还有其它节点需要进行配置操作和确定 AP
S/PCC对应的通道操作。
[10] 一种实现业务保护的装置, 其特征在于, 包括:
可用通道确定模块, 用于确定业务保护路径中所有节点能够共同使用的 AP
S/PCC对应的通道;
通道选择模块, 用于在所述可用通道确定模块确定的 APS/PCC对应的通道 中选择进行业务保护的通道;
业务保护模块, 用于釆用所述通道选择模块选择的所述通道进行业务保护
[11] 根据权利要求 10所述的装置, 其特征在于, 所述装置还包括:
划分模块, 用于通过复帧将所述 APS/PCC划分为 8份、 或 4份、 或 2份; 初始化模块, 用于将所述划分模块划分后的每一份空闲 APS/PCC字节内容 初始化为零。
[12] 根据权利要求 10所述的装置, 其特征在于, 所述可用通道确定模块包括: 节点选择配置单元, 用于选取所述业务保护路径中的某个节点, 并配置所 述节点;
査询单元, 用于通过査询所述业务保护路径中所有节点接收的某个 APS/PC C字节内容是否连续若干帧为零, 确定所述 APS/PCC对应的通道是否能够 使用。
[13] 根据权利要求 10所述的装置, 其特征在于, 所述通道选择模块包括: 配置单元, 用于将所述査询单元査询到的某个空闲 APS/PCC对应的通道配 置给所述节点选择配置单元选择的节点, 作为该节点进行业务保护所使用 的通道;
校验单元, 用于校验所述节点选择配置单元选择的节点, 以及配置单元确 定使用的所述 APS/PCC对应的通道是否被其他业务保护所使用; 判断单元, 用于在校验单元校验通过后, 判断业务保护中是否还有其它节 点需要进行节点选择配置操作以及确定 APS/PCC对应的通道操作。
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"Optical Transport Network(OTN), Linear protection, ITU-T Recommendation G.873.1", TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU, March 2006 (2006-03-01), XP008138958, Retrieved from the Internet <URL:http://www.itu.int/rec/dologin_pub.asp?lang=e&id=T-REC-G.873.1-200603-I!!PDF-E&type=items>> *

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US8422363B2 (en) 2013-04-16
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CN101505258A (zh) 2009-08-12
CN101505258B (zh) 2011-04-13
EP2242195A4 (en) 2011-08-17
EP2242195A1 (en) 2010-10-20
CN101926116A (zh) 2010-12-22
US20100296809A1 (en) 2010-11-25
CN101926116B (zh) 2013-11-06

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