WO2010121512A1 - 一种数据通讯方法及数据通讯系统以及相关设备 - Google Patents

一种数据通讯方法及数据通讯系统以及相关设备 Download PDF

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Publication number
WO2010121512A1
WO2010121512A1 PCT/CN2010/071191 CN2010071191W WO2010121512A1 WO 2010121512 A1 WO2010121512 A1 WO 2010121512A1 CN 2010071191 W CN2010071191 W CN 2010071191W WO 2010121512 A1 WO2010121512 A1 WO 2010121512A1
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Prior art keywords
optical
signal
wavelength
unit
node
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PCT/CN2010/071191
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English (en)
French (fr)
Inventor
阎君
陈亘
张波
何达
曾宇
谭伟
陈旻
裴玲
刘彦
张德江
李时星
张建梅
扶文忠
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华为技术有限公司
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Publication of WO2010121512A1 publication Critical patent/WO2010121512A1/zh

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    • 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
    • H04J14/00Optical multiplex systems
    • H04J14/02Wavelength-division multiplex systems
    • H04J14/0227Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
    • H04J14/0254Optical medium access
    • H04J14/0261Optical medium access at the optical multiplex section layer
    • H04J14/0263Multiplex section layer wavelength assignment algorithms
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J14/00Optical multiplex systems
    • H04J14/02Wavelength-division multiplex systems
    • H04J14/0227Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
    • H04J14/0254Optical medium access
    • H04J14/0261Optical medium access at the optical multiplex section layer
    • H04J14/0264Multiplex identification or labelling
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J14/00Optical multiplex systems
    • H04J14/02Wavelength-division multiplex systems
    • H04J14/0227Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
    • H04J14/0254Optical medium access
    • H04J14/0272Transmission of OAMP information
    • H04J14/0273Transmission of OAMP information using optical overhead, e.g. overhead processing
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J14/00Optical multiplex systems
    • H04J14/02Wavelength-division multiplex systems
    • H04J14/0227Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
    • H04J14/0254Optical medium access
    • H04J14/0272Transmission of OAMP information
    • H04J14/0275Transmission of OAMP information using an optical service channel
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J14/00Optical multiplex systems
    • H04J14/02Wavelength-division multiplex systems
    • H04J14/0287Protection in WDM systems
    • H04J14/0289Optical multiplex section protection
    • H04J14/0291Shared protection at the optical multiplex section (1:1, n:m)

Definitions

  • the present invention relates to the field of communications, and in particular, to a method and system for transmitting signals in an optical transport network. Background technique
  • the Optical Transport Network is a transport network that organizes networks in the optical layer based on wavelength division multiplexing. 0TN will solve the problem of no wavelength/sub-wavelength service scheduling capability, weak networking capability, and weak protection capability of traditional WDM (Wavelength Division Multiplexing) networks.
  • the optical transport network 0TN is subdivided into an optical channel (OCh), an optical multiplex layer (OMS), and an optical transmission section (OTS).
  • the C-band and L-band require different amplifiers for amplification due to device capability limitations.
  • the multi-wavelength signal of C+L is divided into C and L at the OLA (Optical Line Amplifier) node, the C-band after splitting is amplified by C-band optical amplifier, and the L-band is L-band.
  • the optical amplifier is amplified. That is, since only the corresponding optical amplifier can be used, for the C+L application, the C and L splitting and combining are performed at the 0LA node.
  • 0M Optical Multiplexing
  • 0DM Optical Demultiplexing
  • the process of combining or splitting is to terminate the 0MS layer, that is, the combination or splitting of the C-band wavelength and the L-band wavelength is to terminate the 0MS layer.
  • the 0MS layer is terminated in an inappropriate place, and thus, the management and maintenance 0MS hierarchy cannot be effectively operated.
  • Embodiments of the present invention provide a method and system for transmitting signals by an optical transport network, which can be used for 0MS The layer is effectively operated and maintained.
  • a method for transmitting signals by an optical transport network comprising:
  • An optical transmission segment layer 0TS corresponds to multiple optical multiplex section layers 0MS of different bands, wherein the overhead and payload between different 0MSs are independent of each other;
  • the 0MS corresponding to the wavelength is determined, and the 0MS is terminated and the other 0MS is not terminated.
  • the 0TS and the 0MS are changed from the original one to the 0MS corresponding to the 0MSs of different different bands, and the overhead and the payload between different 0MSs are independent of each other.
  • the 0MS is terminated and the 0MS to which the band belongs is not terminated. Therefore, the 0MS can terminate the regeneration in the right place, and the sales of the 0MS and the functions it represents can be properly applied to the operation management and maintenance of the 0MS.
  • An optical transmission network system comprising:
  • the optical wavelength conversion unit is configured to re-convert the optical wavelength without changing the optical signal data format to obtain the converted signal
  • the optical multiplexer unit is provided with a plurality of different bands corresponding to the converted signal, and is used for optically multiplexing the corresponding converted signal to obtain a multiplexed signal, and when there is a wavelength up and down service in a range corresponding to the optical multiplexer unit Ending the reproduction of the 0MS to which the wavelength belongs;
  • the optical amplifying unit corresponding to the optical multiplexing unit, is configured to amplify the multiplexed signal;
  • the line interface unit is connected to each optical amplifying unit for transmitting the amplified signal;
  • the optical monitoring channel unit is configured to transmit signal overhead of the optical wavelength conversion unit, the optical multiplexing unit, the optical amplifying unit, and the line interface unit.
  • one optical amplifying unit corresponds to one optical multiplexing unit, and multiple optical amplifying units are connected to the same line interface unit, and the overhead and payload between different optical multiplexing units are independent, and when When there is a wavelength above and below the wavelength range of a photo-multiplexing unit, the 0MS is terminated and reproduced. Therefore, OMS can terminate regeneration in a suitable place, and the cost of the photosynthetic unit and its generation The function of the table can be properly applied to the operation management and maintenance of the 0MS.
  • FIG. 1 is a block diagram of a method for transmitting a signal by an optical transport network according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of an atomic function model according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of a method for transmitting a signal by an optical transport network according to Embodiment 1 of the present invention
  • FIG. 4 is a schematic diagram of an atomic function model of an 0LA node in a method for transmitting a signal by an optical transport network according to Embodiment 1 of the present invention
  • FIG. 5 is a schematic diagram of an atomic function model of a 0ADM node in a method for transmitting a signal in an optical transport network according to Embodiment 1 of the present invention
  • FIG. 6 is a schematic diagram of a method for transmitting a signal in an optical transport network according to Embodiment 2 of the present invention
  • FIG. 7 is a schematic diagram of a method for transmitting a signal in an optical transport network according to Embodiment 3 of the present invention
  • FIG. 9 is a schematic structural diagram of an optical transport network system according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of an optical transmission network system according to another embodiment of the present disclosure.
  • Embodiments of the present invention provide a method and system for transmitting signals in an optical transport network, which can effectively manage and maintain the 0MS layer.
  • a method for transmitting a signal by an optical transport network according to an embodiment of the present invention is as shown in FIG. 1.
  • the method steps include:
  • an optical transmission segment layer 0TS corresponds to multiple optical multiplex section layers 0MS of different bands, wherein the overhead and payload between different 0MSs are independent of each other;
  • the 0TS and the 0MS are changed from the original one to the 0MS corresponding to the 0MSs of different different bands, and the overhead and the payload between different 0MSs are independent of each other.
  • the 0MS is terminated and the 0MS to which the band belongs is not terminated. Therefore, 0MS can end the regeneration in the right place, 0MS open
  • the pin and the functions it represents can be properly applied to the operation management and maintenance of the 0MS.
  • FIG. 2 the atomic function model of the method provided by the embodiment of the present invention is shown in FIG. 2, wherein the dotted line portion is different from the prior art, and specifically:
  • the 0MS layer in the method provided by the embodiment of the present invention has a connection function and can perform cross-connection, that is, can be used for multiple 0MSs including signals of different bands. Granularity controls for cross-connections. In this way, the control originally performed at the OCh layer can be performed at the OMS layer, which reduces the level of processing required, saves costs, and improves efficiency;
  • the OMS 102 of the right triangle of the 0MS ellipse 101 in the broken line indicates the non-intrusive monitoring function of the 0MS added in the embodiment of the present invention, and the signal is sent here for monitoring, and the monitoring can be performed.
  • the quality of the signal report the alarm signal when the signal has quality problems, or control the protection switching, and do not change the signal, do not affect the signal to continue to be sent to other places, send it to other nodes to continue processing, also make the original
  • the control performed by the OCh layer can be performed at the 0MS layer, which reduces the level of processing required and saves costs;
  • the output of the "optical multiplex section/optical channel" 103 of the trapezoid in the dashed line outputs a lot of individual wavelengths.
  • the EDFA can increase the test wavelength within the range of amplification, monitor this wavelength, and obtain the quality of the signal by monitoring. When the quality problem is detected, the alarm signal can be reported, or the protection switching can be controlled.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • a method for transmitting a signal by an optical transmission network according to Embodiment 1 of the present invention is described by taking a signal of a C+L band at the same time as an example, as shown in FIG.
  • the 0MS is divided according to the band, and the present embodiment is divided into the C band and the L band, and the 0MS of each band has its own independent overhead and payload, and all the overheads are in the light.
  • the monitoring channel 0SC is transmitted for monitoring. Therefore, the C-band has a C-band 0MS layer, and the L-band has an L-band 0MS layer.
  • the C-band signal is from the A node in Figure 3 to the E-node, that is, for the C-band, all the wavelengths inside the C-band are on the A-node, under the E-node;
  • the L-band signal is from the On node A, to node C, that is, for the L-band, the wavelengths inside all L-bands are at point A, below point C.
  • Node B optical line amplifier, 0LA
  • D node optical line amplifier, 0LA
  • C node only has L-band signal, so only terminates the 0MS of the regenerated L-band, does not end.
  • the 0-band path of the C-band signal is one, the starting point is at the A-node, and the end point is at the E-node.
  • the 0MS path of the L-band signal is also one, the starting point is at the A node, and the ending point is at the C node.
  • the atomic function model of the 0LA node (including the B node and the D node) in Figure 3 is shown in Figure 4.
  • the 0LA node only terminates the regenerative 0TS, 0MS and above transparent transmission, and the C node (optical add/drop multiplexer 0ADM) atom
  • the functional model is shown in Figure 5 ( Figure 5 shows only one-way, that is, from left to right in Figure 3).
  • the EMS performs operation management and maintenance on the 0MS between the AEs, it can operate and manage the 0MS from the upper service to the lower service of the C-band signal.
  • the CMS performs operation management and maintenance on the 0MS between the ACs, it can operate and manage the 0MS from the upper service to the lower service of the L-band signal.
  • the 0TS and the 0MS are changed from the original one to the 0MS corresponding to the 0MSs of different different bands, and the overhead and the payload between different 0MSs are independent of each other.
  • the 0MS is terminated and the 0MS to which the wavelength belongs is not terminated. Therefore, the 0MS can terminate the regeneration in the right place, and the sales of the 0MS and the functions it represents can be properly applied to the operation management and maintenance of the 0MS.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • a method for transmitting a signal by an optical transport network according to Embodiment 2 of the present invention is described by taking a signal of a coarse wave division CWDM and a dense wavelength division DWDM mixed as an example, as shown in FIG. 6.
  • the 0MS is divided according to the band. This implementation is divided into CWDM band and DWDM band. Each band 0MS has independent overhead and payload, and all overheads are in the optical monitoring path OSC. Transfer on. Therefore, CTOM has CMSM0, DWDM has DM 0MS.
  • the CWDM wavelength is from the A node in Figure 6 to the C node.
  • the DWDM wavelength is from the B node to the D node.
  • the 0MS path is terminated in the right place, and the overhead of 0MS and the functions it represents can be properly applied to the operation management and maintenance 0MS level.
  • the wavelength of the CWDM is on the A node, and under the C node, the 0MS overhead for the CWDM is generated at the A node, and monitored at the C node, which can be used to manage and monitor the complete service from the wavelength of the CWDM to the next service.
  • the scope in turn, can better manage and maintain the 0MS.
  • the 0TS and the 0MS are changed from the original one to the 0MS corresponding to the 0MSs of different different bands, and the overhead and the payload between different 0MSs are independent of each other.
  • the 0MS is terminated and the 0MS to which the wavelength belongs is not terminated. Therefore, the 0MS can terminate the regeneration in the right place, and the sales of the 0MS and the functions it represents can be properly applied to the operation management and maintenance of the 0MS.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • the method for transmitting signals in the optical transport network provided by the third embodiment of the present invention is described by taking the 0MS path protection as an example, as shown in FIG. 7.
  • a node There are two paths between the A node and the C node, one is directly connected from the A node to the C node, and the other one is far away. It is necessary to add an optical relay node B, that is, from the A node to the B node, and then from the B node. The node is connected to the C node.
  • the B node has no wavelength up and down, so the B node does not end up regenerating any 0MS, so the 0MS between the ACs is no matter which way it goes.
  • one C-band 0MS path protection and one L-band 0MS path protection can be configured. It is possible to protect the complete 0MS of the C-band uplink and downlink services and the L-band uplink and downlink services.
  • the 0TS and the 0MS are changed from the original one to the 0MS corresponding to the 0MSs of different different bands, and the overhead and the payload between different 0MSs are independent of each other.
  • the 0MS is terminated and the 0MS to which the wavelength belongs is not terminated. Therefore, the 0MS can terminate the regeneration in the right place, and the sales of the 0MS and the functions it represents can be properly applied to the operation management and maintenance of the 0MS.
  • Embodiment 4 is a diagrammatic representation of Embodiment 4:
  • the method for transmitting signals in the optical transport network provided by the fourth embodiment of the present invention is described by taking an example of implementing an 0MS shared protection ring, as shown in FIG. 8.
  • the F node detects both the payload loss signal (LOS-P) and the PMI.
  • the detection of PMI by the F node means that there is no wavelength up and down from the A node down to the F node, not a problem between the A node and the F node, so the F node does not use LOS-P as a switching condition.
  • the F node can pass the detection light.
  • the overhead of the path is monitored to detect the failure, that is, the overhead signal loss signal (L0S-0) is detected, and the protocol interaction of the switching is initiated.
  • the optical amplifier of the upstream A node fails, it only affects the payload of each wavelength, and the downstream F node can still detect the LOS-P and PMI.
  • the F-node can be used for each 0MS, and the EDFA can be A test wavelength is added and monitored in the range of amplification. It is judged by the monitoring result that the upstream A node has no service, and the downstream F node detects the LOS-P and PMI, or is caused by the failure of the upstream A-node optical amplifier. If it is determined that the optical amplifier of the A node is faulty, a protection switching is initiated.
  • the method for transmitting signals in the optical transport network can increase the test wavelength in the amplable range of the EDFA for each 0MS, monitor the wavelength, and obtain the signal by monitoring.
  • the quality condition when the quality problem is detected, the alarm signal can be reported, or the protection switching can be controlled.
  • the optical transmission network system provided by the embodiment of the present invention, as shown in FIG. 9, the system includes: an optical wavelength conversion unit 901, configured to re-convert the optical wavelength without changing the optical signal data format, and obtain the converted Signal
  • the optical multiplexing unit 902 is provided with a plurality of different bands corresponding to the converted signals, and is configured to optically multiplex the corresponding converted signals to obtain a multiplexed signal.
  • the optical multiplexing unit 902 has a wavelength range corresponding to the wavelength range
  • the 0MS to which the wavelength belongs is terminated;
  • the optical amplifying unit 903, corresponding to the optical multiplexing unit, is configured to amplify the multiplexed signal; the line interface unit 904 is connected to each optical amplifying unit for transmitting the amplified signal; and the optical monitoring channel unit 905 is configured to The signal overhead of the transmission optical wavelength conversion unit 901, the optical multiplexing unit 902, the optical amplification unit 903, and the line interface unit 904.
  • one optical amplifying unit corresponds to one optical multiplexing unit, and multiple optical amplifying units are connected to the same line interface unit, and the overhead and payload between different optical multiplexing units are independent of each other.
  • the 0MS is terminated and reproduced. Therefore, the OMS can terminate the regeneration in a suitable place, and the overhead of the optical multiplexing unit and the functions it represents can be appropriately applied to the operation management and maintenance of the 0MS.
  • the optical multiplexing unit 902 further includes:
  • connection control module 902A for controlling cross-connection of a plurality of granularities of 0MSs containing signals of different bands
  • the non-intrusion monitoring module 902B is configured to monitor the signal to obtain the quality of the signal, report the alarm signal when the signal has a quality problem, or control the protection switching.
  • connection control module 902A in the embodiment of the present invention performs cross-connection, can operate on multiple bands as a whole, instead of performing cross-connection operation in the original OCh layer, reduces the level of processing required, saves cost, and improves efficiency;
  • non-intrusion monitoring module 902B in this embodiment The OMS can be monitored and protected, so that the control originally performed at the OCh layer can be performed at the 0MS layer, which reduces the level of processing required and saves costs.
  • This embodiment enumerates a system that transmits one end, and correspondingly, the system setting of the receiving end is similar.

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Description

一种数据通讯方法及数据通讯系统以及相关设备 技术领域
本发明涉及通信领域, 尤其涉及一种光传送网传送信号的方法及系统。 背景技术
光传送网 (Optical Transport Network, OTN), 是以波分复用技术为基 础、 在光层组织网络的传送网。 0TN将解决传统 WDM (Wavelength Division Multiplexing, 波分复用) 网络无波长 /子波长业务调度能力、 组网能力弱、 保护能力弱等问题。 光传送网 0TN的分层结构中, 细分为光通路层(Optical Channel, OCh), 光复用段层( Opt ical Mul t iplex Sect ion, OMS )、 和光传输 层 ( Optical Transmission Section, OTS )。
随着 OTN技术的发展和大量应用, 提高了 WDM系统的 OAM&P (Operation Administration Maintenance & Provisioning, 操作管理维护配置) 的能力。
在光传送网传送信号时, 由于器件能力的限制, C波段和 L波段需要使用 不同的放大器进行放大。 C+L的多波长信号在 OLA (Optical Line Amplifier, 光线路放大器)节点先要进行 C和 L的分波,分波后的 C波段使用 C波段的光 放大器进行放大, L波段使用 L波段的光放大器进行放大。 也就是说, 由于只 能使用对应的光放大器,对于 C+L的应用,在 0LA节点要进行 C与 L的分波和 合波。
0M (Optical Multiplexing, 光复用 )和 0DM ( Optical Demultiplexing, 光解复用)是在 0MSn/0Ch_A功能(及 0PS16/0Chr_A)处执行。 也就是说, 合 波或分波的过程是终结再生 0MS层的,即 C波段波长与 L波段波长的合波或分 波是终结再生 0MS层的。
在实现上述过程中, 发明人发现现有技术中至少存在如下问题:
0MS层在不恰当的地方被终结再生, 因而, 不能有效地操作管理维护 0MS 层次。
发明内容
本发明的实施例提供一种光传送网传送信号的方法及系统, 能够对 0MS 层进行有效地操作管理维护。
为达到上述目的, 本发明的实施例采用如下技术方案:
一种光传送网传送信号的方法, 包括:
一个光传输段层 0TS对应不同波段的多个光复用段层 0MS,其中,不同 0MS 之间的开销和净荷相互独立;
当某一节点单元有波长上业务或下业务时, 确定该波长对应的 0MS , 终结 再生该 0MS , 对于其它 0MS , 则不终结再生。
本发明实施例提供的光传送网传送信号的方法, 0TS与 0MS由原来的—— 对应改为一个 0TS对应多个不同波段的 0MS , 不同 0MS之间的开销和净荷相互 独立, 当某一个 0MS的波段范围内有波长上下时, 终结再生该 0MS , 不是该波 段所属的 0MS不被终结再生。 因此, 0MS能够在合适的地方终结再生, 0MS的开 销及其所代表的功能能够恰当地应用于对 0MS的操作管理维护。
一种光传送网络系统, 包括:
光波长转换单元, 用于在不改变光信号数据格式的情况下,将光波长重新 转换, 得到转换后的信号;
光合波单元,对应转换后的信号的不同波段设置有多个, 用于将对应的转 换后的信号进行光复用,得到复用后信号, 当光合波单元对应的波段范围内有 波长上下业务时, 终结再生所述波长所属的 0MS ;
光放大单元, 与光合波单元——对应, 用于对复用后信号进行放大; 线路接口单元, 连接各光放大单元, 用于传输放大后的信号;
光监控信道单元, 用于传送光波长转换单元、 光合波单元、 光放大单元, 线路接口单元的信号开销。
本发明实施例提供的光传送网络, 一个光放大单元对应一个光合波单元, 多个光放大单元连接同一个线路接口单元,且不同光合波单元之间的开销和净 荷各自独立, 并当某一个光合波单元的波段范围内有波长上下时, 终结再生该 0MS。 因此, OMS能够在合适的地方终结再生, 进而光合波单元的开销及其所代 表的功能能够恰当地应用于对 0MS的操作管理维护。
附图说明
图 1为本发明实施例提供的光传送网传送信号的方法的流程框图; 图 2为本发明实施例提供的原子功能模型的示意图;
图 3为本发明实施例一提供的光传送网传送信号的方法的示意图; 图 4为本发明实施例一提供的光传送网传送信号的方法中的 0LA节点的原 子功能模型示意图;
图 5为本发明实施例一提供的光传送网传送信号的方法中的 0ADM节点的 原子功能模型示意图;
图 6为本发明实施例二提供的光传送网传送信号的方法的示意图; 图 7为本发明实施例三提供的光传送网传送信号的方法的示意图; 图 8为本发明实施例四提供的光传送网传送信号的方法的示意图; 图 9为本发明实施例提供的光传送网络系统的结构示意图;
图 10为本发另一明实施例提供的光传送网络系统的结构示意图。
具体实施方式
本发明的实施例提供一种光传送网传送信号的方法及系统, 能够对 0MS 层进行有效地操作管理维护。
本发明实施例提供的光传送网传送信号的方法,如图 1所示,该方法步骤 包括:
S 10 一个光传输段层 0TS对应不同波段的多个光复用段层 0MS , 其中, 不同 0MS之间的开销和净荷相互独立;
S 102、当某一节点单元有波长上业务或下业务时,确定该波长对应的 0MS , 终结再生该 0MS , 对于其它 0MS , 则不终结再生。
本发明实施例提供的光传送网传送信号的方法, 0TS与 0MS由原来的—— 对应改为一个 0TS对应多个不同波段的 0MS , 不同 0MS之间的开销和净荷相互 独立, 当某一个 0MS的波段范围内有波长上下时, 终结再生该 0MS , 不是该波 段所属的 0MS不被终结再生。 因此, 0MS能够在合适的地方终结再生, 0MS的开 销及其所代表的功能能够恰当地应用于对 0MS的操作管理维护。
另夕卜,本发明实施例提供的方法的原子功能模型如图 2所示,其中虚线部 分是与现有技术不同的地方, 具体的:
在原子功能模型图 2中,通过虚线中的 0MS椭圆 101所表示的,本发明实 施例提供的方法中 0MS层具有连接功能, 能够进行交叉连接, 即能够对包含不 同波段信号的多个 0MS 的粒度进行交叉连接的控制。 这样一来, 原本在 OCh 层进行的控制能够在 OMS层进行, 减少了需要处理的层次, 节约了成本, 提高 了效率;
再有,在原子功能模型图 2中,虚线中 0MS椭圆 101右侧三角形的 OMS 102 表示的是在本发明实施例中加入的 0MS的非介入监视功能,信号送到这里进行 监视,通过监视可以得到信号的质量情况,当信号有质量问题时上报告警信号, 或者, 控制保护倒换, 并且不改变信号, 不影响信号继续送到其他地方, 送到 后续的其他节点继续处理,同样使得原本在 OCh层进行的控制能够在 0MS层进 行, 减少了需要处理的层次, 节约了成本;
第三, 在原子功能模型图 2中, 虚线中的梯形的 "光复用段 /光信道" 1 03 的输出端输出很多单个的波长,我们使用其中一个波长作为测试波长, 即对于 各 0MS , 在 EDFA可放大的范围内增加测试波长, 对这个波长进行监视, 通过 监视可以得到信号的质量情况,当检查到质量问题时可以上报告警信号,或者, 可以控制保护倒换。
实施例一:
本发明实施例一提供的光传送网传送信号的方法,以同时传送 C+L波段的 信号为例进行说明, 如图 3所示。
在同时传送 C+L波段的信号的情况下,根据波段对 0MS进行划分,本实施 划分为 C波段和 L波段,每个波段的 0MS都有各自独立的开销和净荷, 所有开 销都在光监视通路 0SC上传送, 以便进行监视。 因此, C波段有 C波段的 0MS 层, L波段有 L波段的 0MS层。 C波段的信号从图 3中的 A节点上, 到 E节点下, 即对 C波段来说, 所有 C波段内部的波长都在 A节点上, E节点下; L波段的信号从图 3中的 A节点 上, 到 C节点下, 即对于 L波段来说, 所有 L波段内部的波长都在 A点上, C 点下。 B节点(光线路放大器, 0LA )、 D节点(光线路放大器, 0LA )没有波长 上下, 故都不终结再生 0MS, C节点只有 L波段的信号下, 所以只终结再生 L 波段的 0MS , 不终结再生 C波段的 0MS ; 所以 C波段信号的 0MS路径为一个, 起点在 A节点, 终点在 E节点, L波段信号的 0MS路径也为一个, 起点在 A节 点, 终点在 C节点。 图 3中 0LA节点(包括 B节点和 D节点)的原子功能模型 如图 4所示, 该 0LA节点仅仅终结再生 0TS, 0MS及以上透传, C节点 (光分 插复用器 0ADM )的原子功能模型图 5 (图 5仅仅表示了单向, 即图 3中从左向 右的方向) 所示。
这样, 如果在 E节点对 AE间的 0MS进行操作管理维护的话, 就能够操作 管理维护 C波段信号的从上业务到下业务完整的 0MS。
同样, 如果在 C节点对 AC间的 0MS进行操作管理维护的话, 就能够操作 管理维护 L波段信号的从上业务到下业务完整的 0MS。
本发明实施例提供的光传送网传送信号的方法, 0TS与 0MS由原来的—— 对应改为一个 0TS对应多个不同波段的 0MS , 不同 0MS之间的开销和净荷相互 独立, 当某一个 0MS的波段范围内有波长上下时, 终结再生该 0MS , 不是该波 长所属的 0MS不被终结再生。 因此, 0MS能够在合适的地方终结再生, 0MS的开 销及其所代表的功能能够恰当地应用于对 0MS的操作管理维护。
实施例二:
本发明实施例二提供的光传送网传送信号的方法, 以传送粗波分 CWDM和 密集波分 DWDM混合的信号为例进行说明, 如图 6所示。
在混合 CWDM和 DWDM的信号的情况下,根据波段对 0MS进行划分, 本实施 划分为 CWDM波段和 DWDM波段,每个波段的 0MS都有独立的开销和净荷, 所有 开销都在光监视通路 0SC上传送。 因此, CTOM有 CWDM的 0MS, DWDM有冊 DM 的 0MS。
CWDM波长从图 6中的 A节点上, 到 C节点下。 DWDM波长从 B节点上, 到 D节点下。
与上述实施例一类似,因为只有本波段内有波长的上下才终结再生本波段 的 0MS , 所以共有 2个 0MS 路径。 分别是 AC间的 CWDM的 0MS和 BD间的冊 DM 的 OMS , B节点没有终结再生 CWDM的 OMS , C节点也没有终结再生 DWDM的 0MS。
这就是说对于 CWDM和 DWDM混合的情况下, 0MS路径在恰当的地方被终结 再生, 0MS的开销及其所代表的功能能够恰当的应用于操作管理维护 0MS层次。 例如, CWDM的波长是在 A节点上, 到 C节点下, 则对 CWDM的 0MS开销在 A节 点产生, 在 C节点进行监视, 能够用于管理及监视从 CWDM的波长上业务到下 业务的完整范围, 进而能够更好地对该 0MS进行操作管理维护。
本发明实施例提供的光传送网传送信号的方法, 0TS与 0MS由原来的—— 对应改为一个 0TS对应多个不同波段的 0MS , 不同 0MS之间的开销和净荷相互 独立, 当某一个 0MS的波段范围内有波长上下时, 终结再生该 0MS , 不是该波 长所属的 0MS不被终结再生。 因此, 0MS能够在合适的地方终结再生, 0MS的开 销及其所代表的功能能够恰当地应用于对 0MS的操作管理维护。
实施例三:
本发明实施例三提供的光传送网传送信号的方法,以实现 0MS路径保护为 例进行说明, 如图 7所示。
A节点与 C节点之间有 2条通路, 一个是直接从 A节点连接到 C节点, 另 外一条距离较远, 需要增加一个光中继节点 B, 即从 A节点连接到 B节点, 再 从 B节点连接到 C节点。
对于 C+L信号,其都是由 A节点上,到 C节点下的, B节点没有波长上下, 因而 B节点不终结再生任何 0MS , 所以 AC间的 0MS无论走哪条路经, 都是 2 个, 即一个 C波段 0MS和 1个 L波段 0MS。
因此,可以配置 1个 C波段的 0MS路径保护和 1个 L波段的 0MS路径保护, 就能够对 C波段的上下业务和 L波段的上下业务的完整的 0MS进行保护。
本发明实施例提供的光传送网传送信号的方法, 0TS与 0MS由原来的—— 对应改为一个 0TS对应多个不同波段的 0MS , 不同 0MS之间的开销和净荷相互 独立, 当某一个 0MS的波段范围内有波长上下时, 终结再生该 0MS , 不是该波 长所属的 0MS不被终结再生。 因此, 0MS能够在合适的地方终结再生, 0MS的开 销及其所代表的功能能够恰当地应用于对 0MS的操作管理维护。
实施例四:
本发明实施例四提供的光传送网传送信号的方法,以实现 0MS共享保护环 为例进行说明, 如图 8所示。
假如从 B节点方向向左的所有波长到 A节点都下业务了, 那么图中从 A 节点向下到 F节点方向就不再有波长上下了,此时 A节点会插入 0MS净荷丢失 指示信号(PMI ), F 节点会同时检测到净荷信号丢失信号(LOS- P )和 PMI。 F 节点检测到 PMI就意味着从 A节点向下到 F节点没有任何波长上下, 不是 A 节点和 F节点之间的问题, 故 F节点不以 LOS- P当作倒换条件。
另一种情况,若 A节点向下到 F节点之间光纤断了,将会同时影响多个波 长的净荷信号和光监视通路, 这时, 即使没有净荷信号, F节点也可通过检测 光监视通路的开销来发现故障, 即检测到开销信号丢失信号(L0S- 0), 发起倒 换的协议交互。
这就是说,若上游 A节点的光放大器出现故障,仅仅是影响了各个波长的 净荷, 下游 F节点仍然可以检测到 LOS- P和 PMI,此时可以在 F节点对各 0MS , 在 EDFA可放大的范围内增加一个测试波长并进行监视, 通过监视结果判断出 是因为上游 A节点没有上业务从而导致下游 F节点检测到 LOS- P和 PMI , 还是 因为上游 A节点的光放大器出现故障所引起的,如过确定是由于 A节点的光放 大器出现故障所引起, 则发起保护倒换。
本发明实施例提供的光传送网传送信号的方法, 能够对于各 0MS ,在 EDFA 可放大的范围内增加测试波长,对这个波长进行监视,通过监视可以得到信号 的质量情况, 当检查到质量问题时可以上报告警信号, 或者, 可以控制保护倒 换。
本发明实施例提供的光传送网络系统, 如图 9所示, 该系统包括: 光波长转换单元 901, 用于在不改变光信号数据格式的情况下, 将光波长 重新转换, 得到转换后的信号;
光合波单元 902, 对应转换后的信号的不同波段设置有多个, 用于将对应 的转换后的信号进行光复用,得到复用后信号, 当光合波单元 902对应的波段 范围内有波长上下业务时, 终结再生该波长所属的 0MS ;
光放大单元 903, 与光合波单元——对应, 用于对复用后信号进行放大; 线路接口单元 904, 连接各光放大单元, 用于传输放大后的信号; 光监控信道单元 905, 用于传送光波长转换单元 901、 光合波单元 902、 光放大单元 903, 线路接口单元 904的信号开销。
本发明实施例提供的光传送网络, 一个光放大单元对应一个光合波单元, 多个光放大单元连接同一个线路接口单元,且不同光合波单元之间的开销和净 荷相互独立, 并当某一个光合波单元的波段范围内有波长上下时, 终结再生该 0MS。 因此, OMS能够在合适的地方终结再生, 进而光合波单元的开销及其所代 表的功能能够恰当地应用于对 0MS的操作管理维护。
进一步地, 本发明另一实施例提供的光传送网络, 如图 10所示, 光合波 单元 902进一步包括:
连接控制模块 902A , 用于对多个包含不同波段信号的 0MS的粒度进行交 叉连接的控制;
非介入监视模块 902B , 用于对信号进行监视, 得到所述信号的质量情况, 当信号有质量问题时上报告警信号, 或者, 控制保护倒换。
本发明实施例中的连接控制模块 902A进行交叉连接, 能够对多个波段整 体进行操作, 而不是在原来的 OCh层进行交叉连接操作, 减少了需要处理的层 次, 节约了成本, 提高了效率; 另外, 本实施例中的非介入监视模块 902B , 能够对 OMS进行监视保护, 使得原本在 OCh层进行的控制能够在 0MS层进行, 减少了需要处理的层次, 节约了成本。
本实施例列举的是发送一端的系统,相对应的,接收一端的系统设置与其 类似。
以上所述,仅为本发明的具体实施方式,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 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 所述以权利要求的保护范围为准。

Claims

权 利 要 求
1、 一种光传送网传送信号的方法, 其特征在于, 包括:
一个光传输段层 0TS对应不同波段的多个光复用段层 0MS,其中,不同 0MS 之间的开销和净荷相互独立;
当某一节点单元有波长上业务或下业务时, 确定所述波长对应的 0MS , 终 结再生所述 0MS , 对于其它 0MS , 则不终结再生。
2、 根据权利要求 1所述的光传送网传送信号的方法, 其特征在于, 所述 每一个 0MS的开销都通过光监视通路 0SC传送。
3、 根据权利要求 1所述的光传送网传送信号的方法, 其特征在于, 所述 多个不同波段的 0MS包括:
粗波分 CWDM、 C波段的密集波分 DWDM, L波段的密集波分冊 DM。
4、 根据权利要求 1所述的光传送网传送信号的方法, 其特征在于, 波长 下业务的节点单元对从波长上业务到波长下业务之间的 0MS 进行操作管理维 护。
5、 根据权利要求 1所述的光传送网传送信号的方法, 其特征在于, 所述 方法进一步包括:
在 0MS层对包含不同波段信号的多个 0MS的粒度进行交叉连接的控制。
6、 根据权利要求 1所述的光传送网传送信号的方法, 其特征在于, 所述 方法进一步包括:
在 0MS对信号进行监视,得到所述信号的质量情况, 当信号有质量问题时 上报告警信号, 或者, 控制保护倒换。
7、 根据权利要求 1所述的光传送网传送信号的方法, 其特征在于, 所述 方法还包括:
对每个波段的 0MS , 在掺铒光纤放大器 EDFA可放大的范围内增加测试波 长, 对所述波长进行监视, 得到信号的质量情况, 当检查到质量问题时上报告 警信号, 或者, 控制保护倒换。
8、 一种光传送网络系统, 其特征在于, 包括:
光波长转换单元, 用于在不改变光信号数据格式的情况下,将光波长重新 转换, 得到转换后的信号;
光合波单元,对应所述转换后的信号的不同波段设置有多个, 用于将对应 的所述转换后的信号进行光复用,得到复用后信号, 当所述光合波单元对应的 波段范围内有波长上下业务时, 终结再生所述波长所属的 0MS ;
光放大单元, 与所述光合波单元——对应, 用于对所述复用后信号进行放 大;
线路接口单元, 连接各所述光放大单元, 用于传输所述放大后的信号; 光监控信道单元, 用于传送所述光波长转换单元、 光合波单元、 光放大单 元, 线路接口单元的信号开销。
9、 根据权利要求 8所述的光传送网络系统, 其特征在于, 所述光合波单 元进一步包括:
连接控制模块,用于对多个包含不同波段信号的 0MS的粒度进行交叉连接 的控制;
非介入监视模块, 用于对信号进行监视, 得到所述信号的质量情况, 当信 号有质量问题时上报告警信号, 或者, 控制保护倒换。
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019011003A1 (zh) * 2017-07-14 2019-01-17 华为技术有限公司 一种光网络中光监控信道处理的方法和装置

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101534164B (zh) * 2009-04-21 2012-01-04 华为技术有限公司 光传送网传送信号的方法及系统
CN105871498B (zh) * 2015-01-21 2019-03-29 中兴通讯股份有限公司 一种光交叉连接调度的装置、方法及光电混合交叉系统
CN105160124B (zh) * 2015-09-23 2018-04-20 烽火通信科技股份有限公司 光传送网开销仿真系统及仿真方法
CN106936534A (zh) * 2015-12-31 2017-07-07 中兴通讯股份有限公司 波分复用器的配置方法和装置
CN105721063B (zh) * 2016-02-24 2018-04-20 烽火通信科技股份有限公司 一种基于voa调制的光载波通讯方法及系统
CN115336198B (zh) * 2020-03-12 2023-10-27 阿里巴巴集团控股有限公司 光传送网络中自动oms层拓扑计算系统、方法、装置及设备
CN115441982B (zh) * 2022-08-25 2024-06-18 烽火通信科技股份有限公司 波分复用网络分步并行调测优化方法及装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101296050A (zh) * 2008-06-27 2008-10-29 中兴通讯股份有限公司 一种光网络装置及光波的处理方法
CN101369848A (zh) * 2008-10-17 2009-02-18 烽火通信科技股份有限公司 监控光传送网复用段与光通道信号质量的方法
CN101534164A (zh) * 2009-04-21 2009-09-16 华为技术有限公司 光传送网传送信号的方法及系统

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101296050A (zh) * 2008-06-27 2008-10-29 中兴通讯股份有限公司 一种光网络装置及光波的处理方法
CN101369848A (zh) * 2008-10-17 2009-02-18 烽火通信科技股份有限公司 监控光传送网复用段与光通道信号质量的方法
CN101534164A (zh) * 2009-04-21 2009-09-16 华为技术有限公司 光传送网传送信号的方法及系统

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
R.INKRET ET AL.: "ConTEL 2005. Proceedings of the 8th International Conference on. 27 Jun. 2005", vol. 2, 27 June 2005, ISSN: 1953-184-, article "Multi-Service Photonic Network. Telecommunications", pages: 493 - 500 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019011003A1 (zh) * 2017-07-14 2019-01-17 华为技术有限公司 一种光网络中光监控信道处理的方法和装置
CN109257093A (zh) * 2017-07-14 2019-01-22 华为技术有限公司 一种光网络中光监控信道处理的方法和装置
US10826636B2 (en) 2017-07-14 2020-11-03 Huawei Technologies Co., Ltd. Optical supervisory channel processing method and apparatus in optical network
CN109257093B (zh) * 2017-07-14 2021-09-14 华为技术有限公司 一种光网络中光监控信道处理的方法和装置

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