WO2011153781A1 - 光传输单元帧的解映射方法及装置 - Google Patents

光传输单元帧的解映射方法及装置 Download PDF

Info

Publication number
WO2011153781A1
WO2011153781A1 PCT/CN2010/078132 CN2010078132W WO2011153781A1 WO 2011153781 A1 WO2011153781 A1 WO 2011153781A1 CN 2010078132 W CN2010078132 W CN 2010078132W WO 2011153781 A1 WO2011153781 A1 WO 2011153781A1
Authority
WO
WIPO (PCT)
Prior art keywords
otu frame
demapping
priority
mapping
otu
Prior art date
Application number
PCT/CN2010/078132
Other languages
English (en)
French (fr)
Inventor
刘希琳
Original Assignee
中兴通讯股份有限公司
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 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to US13/702,693 priority Critical patent/US8982712B2/en
Priority to EP10852772.2A priority patent/EP2582070B1/en
Publication of WO2011153781A1 publication Critical patent/WO2011153781A1/zh

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/27—Arrangements for networking
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
    • H04J3/1605—Fixed allocated frame structures
    • H04J3/1652—Optical Transport Network [OTN]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/03—Arrangements for fault recovery

Definitions

  • the present invention relates to the field of communications, and in particular to a method and apparatus for demapping a frame of an optical transmission unit.
  • OTN Optical Transport Network
  • OTU Optical Transport Unit
  • the communication equipment manufacturer's equipment may choose one or more mapping methods.
  • the operator uses different types of equipment from different manufacturers or different manufacturers to access customer services. Even the same customer service data may use different services.
  • Data mapping method For example, the International Telecommunications Union-Telecommunications Standardization Sector (ITU-T) G.Sup43 recommends four mapping methods for mapping 10GE-LAN signals to OTUs.
  • ITU-T International Telecommunications Union-Telecommunications Standardization Sector
  • a primary object of the present invention is to provide a method and apparatus for demapping OTU frames to solve the above problems.
  • a demapping method for an optical transmission unit OTU frame includes: receiving a reference clock and a demapping path according to a highest priority setting of an OTU frame mapping manner of the local device; and receiving an OTU frame of the opposite device by using the receiving reference clock and the demapping path ; according to the time of the received OTU frame
  • the clock recovery result and the customer service alarm indication determine the priority of the OTU frame demapping; the OTU frame of the peer device is demapped by using the received reference clock and the demapping path corresponding to the priority of the determined OTU frame demapping.
  • the method further includes: adjusting the priority of the OTU frame mapping manner of the local device to the determined OTU frame solution The priority of the map. Further, determining the priority of the OTU frame demapping according to the clock recovery result of the received OTU frame and the customer service alarm indication includes: determining whether the clock recovery result of the OTU frame is a signal loss; if the determination result is no, acquiring the OTU frame Customer service alarm indication.
  • the method further includes: if the customer service alarm is a service failure alarm, increasing the priority of the OTU frame demapping by one level, and demap according to the OTU frame after the level 1 is improved.
  • the priority reference level corresponds to the receiving reference clock for the clock recovery step; if the customer service alarm is the expected alarm state of the client layer, the current priority is determined as the priority of the OTU frame demapping. Further, if the priority of the OTU frame mapping is greater than the total number of OTU frame mapping priorities, the demapping process is performed again.
  • a demapping apparatus for an optical transmission unit OTU frame is provided.
  • the demapping apparatus of the optical transmission unit OTU frame includes: a setting module, a highest priority setting receiving reference clock and a demapping path for the OTU frame mapping mode of the local device; and a receiving module, configured to use the receiving reference clock and the solution Map the path to receive the peer device
  • An OTU frame configured to determine a priority of the OTU frame demapping according to the clock recovery result of the received OTU frame and the customer service alarm indication; and a demapping module, configured to use the priority of the determined OTU frame demapping
  • the reference clock and the demapping path are received to demap the OTU frame of the peer device.
  • the method further includes: an adjusting module, configured to adjust a priority of the OTU frame mapping manner of the local device to a priority of the determined OTU frame demapping.
  • the determining module includes: a determining module, configured to determine whether a clock recovery result of the OTN frame is a signal loss; and an obtaining module, configured to acquire an OTU if the determining result is negative Customer service alarm indication for the frame.
  • the determining module further includes: a priority adding module, if the customer service alarm is a service failure alarm, increasing the priority of the OTU frame demapping by one level; and the priority determining module is configured to: if the customer service alarm is expected by the client layer The alarm status determines the current priority as the priority of the OTU frame demapping. Further, if the priority of the OTU frame demapping is greater than the total number of OTU frame mapping priorities, the demapping process is re-executed.
  • the reference clock and the demapping path are received with the highest priority setting of the OTU frame mapping mode of the local device; the OTU frame of the opposite device is received by using the receiving reference clock and the demapping path; and the clock according to the received OTU frame
  • the recovery result and the customer service alarm indication determine the priority of the OTU frame demapping; the OTU frame of the peer device is demapped by using the received reference clock and the demapping path corresponding to the priority of the determined OTU frame demapping, and the same client is solved.
  • the service can be mapped to the OTU frame through multiple mapping methods. Since different device manufacturers may use different mapping methods to map OTU frames, the demapping mode needs to be manually configured in the process of demapping the OTU frame.
  • FIG. 2 is a structural block diagram of an apparatus for locating an OTU frame according to an embodiment of the present invention
  • Figure 4 is a block diagram of a preferred embodiment of the present invention
  • Figure 5 is a block diagram of a preferred embodiment of the present invention
  • Figure 6 is a flow diagram of a preferred embodiment of the present invention
  • Figure 7 is a schematic illustration of a preferred embodiment of the invention.
  • the method includes the following steps: step S102 to step 4: S: Step 102: Receive a reference clock and a demapping path according to a highest priority setting of an OTU frame mapping manner of the local device.
  • Step S104 Receive a reference frame clock and a demapping path to receive an OTU frame of the peer device.
  • Step S106 Determine a priority of the OTU frame demapping according to the clock recovery result of the received OTU frame and the customer service alarm indication.
  • Step S108 Demap the OTU frame of the peer device by using the received reference clock and the demapping path corresponding to the priority of the determined OTU frame demapping.
  • the mapping reference clock and the demapping path of the corresponding OTU frame must be manually configured, which is cumbersome and error-prone.
  • the OTU frame is demapped by the highest priority of the locally configured OTU frame mapping manner, and the mapping priority of the OTU frame is determined by the clock recovery and the result of the alarm indication of the client service, thereby improving the OTU frame in the optical transmission network.
  • the efficiency and accuracy of demapping may be the highest priority of the peer device supporting the priority.
  • the method further includes: adjusting a priority of the OTU frame mapping manner of the local device to a priority of the determined OTU frame demapping.
  • the priority of the transmission direction mapping is configured according to the determined priority of the receiving direction demapping, and the preferred embodiment implements an adaptive process of understanding the mapping and mapping priorities.
  • step S106 includes: determining whether the OTU frame clock recovery result is a signal loss; if the determination result is no, acquiring a customer service alarm indication of the OTU frame.
  • the clock recovery is a process of recovering the clock from the serial data, which can shorten the time for judging whether the data is correctly received.
  • Obtaining the alarm indication of the customer service is a method for judging whether the data is correctly received, and improving the accuracy of the received data.
  • the method further includes: if the customer service alarm is an expected alarm state of the client layer, determining that the current priority is the priority of the OTU frame demapping; if the customer service alarm is a service For the failure alarm, the priority of the OTU frame demapping is increased by one level, and the clock recovery step is performed according to the receiving reference clock corresponding to the priority of the OTU frame demapping after the first level is increased.
  • the type of the alarm is determined, and the priority of the OTU frame is operated according to the judgment result, and the priority of the OTU frame is accurately obtained, thereby improving the efficiency and accuracy of the OTU frame demapping in the optical transmission network.
  • the demapping process is re-executed. It should be noted that if the determined priority of the OTU frame mapping is greater than the total number of OTU frame mapping priorities, it indicates that the demapping of the OTU frame is not supported.
  • the present invention provides a demapping apparatus for an OTU frame, as shown in FIG. 2, including a setting module 22 and a receiving module 24, a determining module 26, and a demapping module 28.
  • Setting module 22 Receiving the reference clock and the demapping path according to the highest priority setting of the OTU frame mapping mode of the local device; the receiving module 24 is connected to the setting module 22, for receiving the reference device by using the receiving reference clock and the demapping path set by the setting module 22
  • the determining unit 26 is connected to the receiving module 24, configured to determine the priority of the OTU frame demapping according to the clock recovery result of the OTU frame received by the receiving module 24 and the customer service alarm indication;
  • the demapping module 28 is connected to The determining module 26 is configured to demap the OTU frame of the peer device by using the receiving reference clock and the demapping path corresponding to the priority of the OTU frame demapping determined by the determining module 26.
  • the apparatus further includes an adjustment module 32.
  • the determining module 26 includes a determining module 262, an obtaining module 264, and an increase in priority. Module 266 and priority determination module 268, which are described in detail below.
  • the adjusting module 32 is configured to adjust the priority of the OTU frame mapping manner of the local device to the determined priority of the OTU frame demapping.
  • the determining module 262 is configured to determine whether the clock recovery result of the OTN frame is a signal loss.
  • the obtaining module 264 is connected to the determining module 262, configured to obtain a customer service alarm indication of the OTU frame if the determining result of the determining module 262 is negative.
  • the priority adding module 266 is connected to the obtaining module 264, configured to: when the obtaining module 264 obtains the customer service alarm as a service failure alarm, the priority of the OTU frame demapping is increased by one level; the priority determining module 268 is connected to the acquiring The module 264 is configured to obtain the alarm status that the client service alarm is expected by the client layer, and determine that the current priority is the priority of the OTU frame demapping.
  • 4 is a block diagram of a preferred embodiment of the present invention. As shown in FIG.
  • the method includes: a signal sending module 41, a data/clock recovery module 42, a reference clock generating module 43, an adaptive controller 44, and a framer 45.
  • the above structure will be described in detail below.
  • the signal sending module 41 is a path for the service signal output, and can be configured as OTUkX, where k can take 1 2 3 4, etc., and represents OTU1 OTU2 OTU3 OTU4; X can be ef or not, represents OTUkx OTUkf OTUk, and the like.
  • OTU2, OTU2e or OTU 1 e is the OGE-L AN client side signal
  • Data/clock recovery module 42 is the path for the service signal input, can be configured as OTUkX (same as above), and can output signal loss and clock loss indication
  • the reference clock generation module 43 is a module for generating a reference clock or a training clock, and may provide a training clock or a reference clock required for the OTU2, OTU2e or OTUle for the signal transmitting module 41 and the data/clock recovery module 42, respectively; It is responsible for configuring the reference clock generation module 43 and the framer 45 according to the adaptive control method proposed by the present invention; the framer 45 sets the signal mapping/demapping manner according to the configuration of the adaptive controller 44, and provides a GFP layer alarm indication.
  • the adaptive controller 44 is referenced to the control strategy. It should be noted that, this embodiment is a device for performing OTU frame demapping in practice, wherein the framing device is configured to set a demapping mode of the OTU frame (setting a reference clock signal and a demapping path) and adjusting a local device OTU frame mapping manner.
  • the data/clock recovery module 42 is used to output a clock recovery result, and the data/clock recovery module 42 is configured to set a reference clock according to the set clock result.
  • 5 is a block diagram of a structure according to a preferred embodiment of the present invention.
  • FIG. 5 is an embodiment of an apparatus for service mapping adaptation in an OTN. The embodiment is based on the structure diagram of FIG. 4 and combined with 10GE access.
  • the device comprises: a parallel/serial converter 51, a serial/parallel converter 52, a digital phase locked loop 53, a central processing unit (CPU) 54 and a field programmable gate array (Field Programmable Gate Array) , referred to as FPGA) 55.
  • the optical signal of the peer device is photoelectrically converted and then connected by the serial/parallel converter 52 of the device, and the serial/parallel converter 52 converts the serial signal into a parallel signal and recovers the data and clock to the FPGA 55.
  • the line/parallel converter 52 detects the access signal and provides a signal loss indication and a reception loss indication to the CPU 54 via an IO pin or a serial bus such as SPI, IIC, etc., wherein the generation of the loss of lock indication depends on the digital phase locked loop.
  • the data acquired from the FPGA 55 is converted into a serial signal for transmission; the digital phase locked loop 53 includes two phase locked loops, and one provides a parallel reference for the parallel/serial converter 51.
  • a serial/parallel converter 52 is provided with a receive reference clock, which is connected to the above 51 and 52 modules by a high-speed differential line, wherein the reference clock provided by the digital phase-locked loop 53 is determined by the CPU 54, and the CPU 54 and The digital phase-locked loops are connected by a serial bus such as IIC or SPI.
  • this embodiment is a hardware structural block diagram of realizing the demapping function, wherein the parallel/serial converter 51 is equivalent to the signal transmitting module 41 in FIG. 4, and the serial/parallel converter 52 is equivalent to the figure.
  • the data/clock recovery module 42 in 4 the digital phase locked loop 53 is equivalent to the reference clock generation module 43
  • the CPU 54 is equivalent to the adaptive controller 44 in Fig.
  • Step S602 the transmission reference clock and the configuration are configured according to the highest priority mapping mode supported by the device.
  • the transmission reference clocks of the four different mapping modes are shown in Table 1.
  • the mapping path is the path where 10GE is mapped to OTU2/OTU2e/OTU 1 e.
  • the description of the four mapping paths is shown in Table 1.
  • Table 1 Reference table priority mapping mode for transmitting reference clock rate in four mapping modes Transmission/reception reference clock rate
  • Step S604 obtain the priority of the highest priority mapping mode supported by the device, and store it in variable N.
  • Step S606 the FIFO mapping path of the receiving reference clock and the framer is configured according to the mapping manner of the priority N. Refer to Table 2 for receiving the reference clock. The description of the demapping path of the framer can be referred to Table 2, and the process is reversed. Table 2 Reference table of the mapping path description of the four mapping modes
  • Step S608 the adaptive control module acquires a signal loss indication from the data/clock recovery module. If the signal is lost, the process returns to step 4 to S602, otherwise to step 4 to S612. Step S610, determining whether the signal is lost. Step S612, the adaptive control module acquires an alarm of the OTU frame from the framer. If the OTU has a service failure type alarm, the process proceeds to step 4 to gather S616; otherwise, the process proceeds to step 4 to gather 622. Step S614, determining whether the service is invalid. In step S616, the value of N is increased by one. Step S618, if N is greater than M, it indicates that the two devices do not have a mapping mode supported by the device, and the process returns to step S602.
  • Step S620 if the device supports the mapping mode with priority N, then return to step S606; otherwise, return to step 4 to gather S616.
  • Step S622 the adaptive controller obtains, from the framer, a GFP alarm indication of the customer service carried by the OTN.
  • Step S624 determining whether the alarm meets expectations? If the result of the determination is YES, the process proceeds to step S626, otherwise, the process proceeds to step S616.
  • Table 3 Alarm status reference table expected by the client layer of the OTU frame
  • device A After the device is powered on, device A sets the transmit reference clock to 10.7092 GHz, sets the mapping mode to 10GE->GFP->OTU2 transparent transmit preamble, and sets the device B bonus transmit reference clock to 11.0957 GHz. Set the mapping mode to 10GE->GFP->OTU2 does not transmit the preamble.
  • both device A and device B detect that the signal loss alarm disappears.
  • Device A sets its transmit reference clock and demapping path according to the priority order from priority 1.
  • Device B starts with priority 3 according to priority. Sorting sets its transmit reference clock and demapping path in turn. When device A sets the receive reference and demapping path with the priority of 3, the OTU layer alarm disappears and the GFP layer alarms match the expected.
  • device A detects the GFP client. The signal is invalid, otherwise GFP is detected without alarm.
  • Device A configures and maintains the reference clock and demapping path as priority 3.
  • Device B will receive When the reference clock and the demapping path are set to the priority 3 mode, the OTU layer alarms are cleared, and the GFP layer alarms are in line with expectations. If the client side port of device A does not access the 10GE service, device B detects that the GFP client signal is invalid. Otherwise GFP is detected without alarm). At this point, the adaptive process ends, and the devices of both parties automatically find the mapping mode of the supported 10GE signals.
  • the mapping manner supported by the OTN device that accesses the same type of customer service signal is automatically recognized and automatically configured, and the present invention not only supports automatic identification and automatic configuration between devices, but also automatically configures the device. It also supports automatic setting and automatic configuration between the device to which the present invention belongs and the old device that is not automatically recognized.
  • the invention greatly facilitates the interconnection and interoperability operation of the operator when accessing a plurality of client signals mapped into the OTU frame mode, and has great practical value. It should be noted that the demapping device of the OTU frame described in the device embodiment corresponds to the foregoing method embodiment, and the specific implementation process has been described in detail in the method embodiment, and details are not described herein again.
  • the present invention can adaptively configure a method for mapping a customer service, so that one or more devices supporting the OTN mapping mode can automatically find a demapping manner between the two devices.
  • the OTN device carrying a certain kind of customer signal can have the function of the customer signal demapping adaptive in OTN only by upgrading the software without changing the hardware.
  • modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module.
  • the invention is not limited to any particular combination of hardware and software.
  • the above description is only the preferred 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, equivalent substitutions, improvements, etc. made within the scope of the present invention are intended to be included within the scope of the present invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computing Systems (AREA)
  • Time-Division Multiplex Systems (AREA)

Description

光传输单元帧的解映射方法^置 技术领域 本发明涉及通信领域， 具体而言， 涉及一种光传输单元帧的解映射方法 及装置。 背景技术 在光传输网络（Optical Transport Network, 简称为 OTN ) 中， 同一种客 户业务信号映射到光传输单元（ Optical Transport Unit, 简称为 OTU )帧结构 中可以釆用多种方式。 通信设备制造商的设备可能选择其中一种或者多种映 射方式， 运营商在使用不同厂家或相同厂家不同型号的设备进行客户业务的 接入， 即便是同一种客户业务数据， 可能会釆用不同的数据映射方法。 例^口， 国际电信联盟 电信标准部 ( International Telecommunications Union-Telecommunications standardization sector,简称为 ITU-T )十办议 G.Sup43 中对 10GE-LAN 信号到 OTU 的映射推荐了四种映射方式， 分别为 10GE->OTU2e、 10GE->OTUle、 10GE->GFP->OTU2 不透传前导码和 10GE->GFP->OTU2透传前导码。 相关技术中， 同一种客户业务可以通过多种映射方式映射到 OTN 帧， 由于不同设备制造商可能釆用不同的映射方式来映射 OTN帧， 对 OTN帧进 行解映射的过程中， 需要手动地配置解映射方式， 不仅配置过程繁瑣， 且由 于解映射方式配置错误会导致设备互连互通出错， 进而导致链路中断。 发明内容 本发明的主要目的在于提供一种 OTU 帧的解映射方法及装置， 以解决 上述问题。 才艮据本发明的一个方面， 提供了一种光传输单元 OTU帧的解映射方法。 根据本发明的光传输单元 OTU 帧的解映射方法包括： 根据本地设备的 OTU帧映射方式的最高优先级设置接收参考时钟和解映射路径；使用接收参 考时钟和解映射路径来接收对端设备的 OTU帧； 根据接收到的 OTU帧的时 钟恢复结果和客户业务告警指示确定 OTU 帧解映射的优先级； 使用确定的 OTU 帧解映射的优先级对应的接收参考时钟和解映射路径对对端设备的 OTU帧进行解映射。 进一步地， 在根据接收到的 OTU 帧的时钟恢复结果和客户业务告警指 示确定 OTU帧的解映射的优先级之后， 还包括： 调整本地设备的 OTU帧映 射方式的优先级为确定的 OTU帧解映射的优先级。 进一步地， 根据接收到的 OTU 帧的时钟恢复结果和客户业务告警指示 确定 OTU帧解映射的优先级包括： 判断 OTU帧的时钟恢复结果是否为信号 丢失； 如果判断结果为否， 获取 OTU帧的客户业务告警指示。 进一步地， 在获取 OTU 帧的客户业务告警指示之后， 还包括： 如果客 户业务告警为业务失效告警， 则将 OTU 帧解映射的优先级提高一级， 并根 据提高一级后的 OTU 帧解映射的优先级对应的接收参考时钟进行时钟恢复 步骤； 如果客户业务告警为客户层预期的告警状态， 确定当前优先级为 OTU 帧解映射的优先级。 进一步地， 如果 OTU帧映射的优先级大于 OTU帧映射优先级的总数， 则重新进行解映射过程。 根据本发明的另一个方面， 提供了一种光传输单元 OTU 帧的解映射装 置。 根据本发明的光传输单元 OTU 帧的解映射装置包括： 设置模块， 用于 居本地设备的 OTU 帧映射方式的最高优先级设置接收参考时钟和解映射 路径； 接收模块， 用于使用接收参考时钟和解映射路径来接收对端设备的
OTU帧； 确定模块， 用于根据接收到的 OTU帧的时钟恢复结果和客户业务 告警指示确定 OTU帧解映射的优先级； 解映射模块， 用于使用确定的 OTU 帧解映射的优先级对应的接收参考时钟和解映射路径对对端设备的 OTU 帧 进行解映射。 进一步地， 上述方法还包括： 调整模块， 用于调整本地设备的 OTU 帧 映射方式的优先级为确定的 OTU帧解映射的优先级。 进一步地， 确定模块包括： 判断模块， 用于判断 OTN 帧的时钟恢复结 果是否为信号丢失； 获取模块， 用于在判断结果为否的情况下， 获取 OTU 帧的客户业务告警指示。 进一步地， 确定模块还包括： 优先级增加模块， 如果客户业务告警为业 务失效告警， 则将 OTU 帧解映射的优先级提高一级； 优先级确定模块， 用 于如果客户业务告警为客户层预期的告警状态， 确定当前优先级为 OTU 帧 解映射的优先级。 进一步地，如果 OTU帧解映射的优先级大于 OTU帧映射优先级的总数， 则重新进行解映射过程。 通过本发明， 釆用 居本地设备的 OTU 帧映射方式的最高优先级设置 接收参考时钟和解映射路径； 使用接收参考时钟和解映射路径来接收对端设 备的 OTU帧； 根据接收到的 OTU帧的时钟恢复结果和客户业务告警指示确 定 OTU帧解映射的优先级； 使用确定的 OTU帧解映射的优先级对应的接收 参考时钟和解映射路径对对端设备的 OTU 帧进行解映射， 解决了同一种客 户业务可以通过多种映射方式映射到 OTU 帧， 由于不同设备制造商可能釆 用不同的映射方式来映射 OTU帧， 对 OTU帧进行解映射的过程中， 需要手 动地配置解映射方式， 不仅配置过程繁瑣， 且由于解映射方式配置错误会导 致设备互连互通出错， 进而导致链路中断问题， 进而达到了提高了光传输网 络中 OTU帧解映射的效率和准确性。 附图说明 此处所说明的附图用来提供对本发明的进一步理解， 构成本申请的一部 分， 本发明的示意性实施例及其说明用于解释本发明， 并不构成对本发明的 不当限定。 在附图中： 图 1是根据本发明实施例的 OTU帧解映射的方法流程图； 图 2是 居本发明实施例的 OTU帧解映射装置的结构框图； 图 3是 居本发明实施例的 OTU帧解映射装置的优选的结构框图； 图 4是 居本发明优选实施例的结构框图一； 图 5是 居本发明优选实施例的结构框图二； 图 6是 居本发明优选实施例的流程图； 以及 图 7是 居本发明优选实施例的示意图。 具体实施方式 下文中将参考附图并结合实施例来详细说明本发明。 需要说明的是， 在 不冲突的情况下， 本申请中的实施例及实施例中的特征可以相互组合。 本发明提供了一种 OTN帧解映射的方法。 如图 1所示， 该方法包括如 下的步 4聚 S 102至步 4聚 S 104: 步骤 S 102, 根据本地设备的 OTU帧映射方式的最高优先级设置接收参 考时钟和解映射路径。 步骤 S 104,使用接收参考时钟和解映射路径来接收对端设备的 OTU帧。 步骤 S 106, 根据接收到的 OTU帧的时钟恢复结果和客户业务告警指示 确定 OTU帧解映射的优先级。 步骤 S 108 , 使用确定的 OTU帧解映射的优先级对应的接收参考时钟和 解映射路径对对端设备的 OTU帧进行解映射。 相关技术中， 在 OTU帧解映射的过程中， 必须手动配置对应 OTU帧的 映射参考时钟和解映射路径， 比较繁瑣， 且容易出错。 本实施例通过本地配 置的 OTU帧的映射方式的最高优先级对 OTU帧进行解映射， 通过时钟恢复 和客户业务的告警指示的结果确定 OTU 帧的映射优先级， 提高了光传输网 络中 OTU帧解映射的效率和准确性。 优选地， 步骤 S 104中对端发送方向的 OTU帧的映射配置可以为对端设 备支持优先级的最高优先级。 优选地， 在步骤 S 106之后， 还包括： 调整本地设备的 OTU帧映射方式 的优先级为确定的 OTU帧解映射的优先级。 需要说明的是， 根据确定的接收方向解映射的优先级来配置发送方向映 射的优先级， 该优选实施例实现了解映射和映射优先级的自适应过程。 优选地， 步骤 S 106包括： 判断 OTU帧时钟恢复结果是否为信号丢失； 如果判断结果为否， 获取 OTU帧的客户业务告警指示。 时钟恢复是从串行数据中恢复出时钟的过程， 其可以缩短判断数据是否 正确接收的时间， 获取客户业务的告警指示是一种判断数据是否正确接收的 方法， 提高了接收数据的准确性。 优选地， 在获取 OTU 帧的客户业务告警指示之后， 上述方法还包括： 如果客户业务告警为客户层预期的告警状态， 确定当前优先级为 OTU 帧解 映射的优先级； 如果客户业务告警为业务失效告警， 则将 OTU 帧解映射的 优先级提高一级， 并才艮据提高一级后的 OTU 帧解映射的优先级对应的接收 参考时钟进行时钟恢复步骤。 判断告警类型， 并根据判断结果对 OTU 帧的优先级进行操作， 准确获 得了 OTU帧的优先级，提高了光传输网络中 OTU帧解映射的效率和准确性。 优选地， 如果 OTU帧映射的优先级大于 OTU帧映射优先级的总数， 则 重新进行解映射过程。 需要说明的是， 如果确定的 OTU 帧映射的优先级大 于 OTU帧映射优先级的总数， 表明不支持 OTU帧的解映射。 本发明提供了一种 OTU帧的解映射装置， 如图 2所示， 包括设置模块 22和接收模块 24、 确定模块 26和解映射模块 28， 下面对上述结构进行详细 描述： 设置模块 22 , 用于根据本地设备的 OTU帧映射方式的最高优先级设置 接收参考时钟和解映射路径； 接收模块 24 , 连接至设置模块 22 , 用于使用 设置模块 22设置的接收参考时钟和解映射路径来接收对端设备的 OTU帧； 确定模块 26 , 连接至接收模块 24 , 用于根据接收模块 24接收到的 OTU帧 的时钟恢复结果和客户业务告警指示确定 OTU 帧解映射的优先级； 解映射 模块 28 , 连接至确定模块 26， 用于使用确定模块 26确定的 OTU帧解映射 的优先级对应的接收参考时钟和解映射路径对对端设备的 OTU 帧进行解映 射。 图 3是是根据本发明实施例的 OTU帧解映射装置的优选的结构框图， 如图 3所示， 该装置还包括调整模块 32 , 确定模块 26 包括判断模块 262、 获取模块 264、 优先级增加模块 266和优先级确定模块 268， 下面对上述结 构进行详细描述。 调整模块 32 , 用于调整本地设备的 OTU帧映射方式的优先级为确定的 OTU帧解映射的优先级。 判断模块 262 , 用于判断 OTN帧的时钟恢复结果是否为信号丢失； 获取 模块 264 , 连接至判断模块 262 , 用于在判断模块 262判断结果为否的情况 下， 获取 OTU帧的客户业务告警指示； 优先级增加模块 266 , 连接至获取模 块 264 , 用于在获取模块 264获取客户业务告警为业务失效告警， 则将 OTU 帧解映射的优先级提高一级； 优先级确定模块 268， 连接至获取模块 264 , 用于获取模块 264获取客户业务告警为客户层预期的告警状态， 确定当前优 先级为 OTU帧解映射的优先级。 为了帮助理解上述实施例， 下面进一步描述本发明的其他多个优选实施 例。 图 4是 居本发明优选实施例的结构框图一， 如图 4所示， 包括： 信号 发送模块 41、 数据 /时钟恢复模块 42、 参考时钟生成模块 43、 自适应控制器 44、 成帧器 45 , 下面对上述结构进行详细描述。 信号发送模块 41 为业务信号输出的路径， 可配置为 OTUkX, 其中， k 可取 1 2 3 4等等， 代表 OTU1 OTU2 OTU3 OTU4; X可以为 e f 或者没有， 代表 OTUkx OTUkf OTUk等等。 OTU2、 OTU2e或 OTU 1 e是 载 1 OGE-L AN 客户侧信号的； 数据 /时钟恢复模块 42 为业务信号输入的路径， 可配置为 OTUkX (同上）， 并可输出信号丢失和时钟失锁指示； 参考时钟生成模块 43 是生成参考时钟或训练时钟的模块， 可分别为信号发送模块 41和数据 /时钟 恢复模块 42提供 OTU2、 OTU2e或 OTUle所需的训练时钟或参考时钟； 自 适应控制器 42 负责根据本发明提出的自适应控制方法配置参考时钟生成模 块 43和成帧器 45; 成帧器 45根据自适应控制器 44的配置来设置信号映射 / 解映射的方式， 并提供 GFP层告警指示给自适应控制器 44作为控制策略的 参考。 需要说明的是， 本实施例是实际中进行 OTU 帧解映射的装置， 其中的 成帧器用来设置 OTU 帧的解映射方式 （设置参考时钟信号及解映射路径） 和调整本地设备 OTU帧映射方式，数据 /时钟恢复模块 42用来输出时钟恢复 结果， 数据 /时钟恢复模块 42用来根据设置的时钟结果设置参考时钟。 图 5是根据本发明优选实施例的结构框图二， 图 5是一种 OTN中业务 映射自适应的装置的一个实施例， 该实施例以图 4的结构示意图为基础， 并 结合 10GE接入的情况进行设计， 下面结合图 5对该结构进行说明： 该装置包括： 并行 /串行转换器 51、 串行 /并行转换器 52、数字锁相环 53、 中央处理器 （ Central Processing Unit, 简称为 CPU ) 54和现场可编程门阵列 ( Field Programmable Gate Array, 简称为 FPGA ) 55。 对端设备的光信号经过光电转换后由本装置的串行 /并行转换器 52 接 入， 串行 /并行转换器 52将串行信号转换为并行信号并恢复出数据和时钟发 送给 FPGA55,此外串行 /并行转换器 52检测接入信号并通过 IO引脚或 SPI、 IIC等串行总线的方式提供信号丢失指示和接收失锁指示给 CPU54, 其中接 收失锁指示的产生依赖于数字锁相环 53提供的接收参考时钟； FPGA55上运 行支持一种或多种 10GE到 OTU2/OTU2e/OTU 1 e映射方式的自定义逻辑， 根据 CPU54 的配置选择其中一种映射路径， 并提供 GFP 层告警指示给 CPU54, 其中 CPU与 FPGA之间可以使用 CPU并行数据 /地址总线连接， 也 可以使用 SPI、 IIC等串行总线连接； 并行 /串行转换器， 根据数字锁相环 53 提供的发送参考时钟， 将从 FPGA55获取的数据转换成串行信号发送出去； 数字锁相环 53中包含两个锁相环，一个为并行 /串行转换器 51提供发送参考 时钟， 一个为串行 /并行转换器 52提供接收参考时钟， 其与上述 51、 52两个 模块之间均釆用高速差分线连接， 其中数字锁相环 53 提供的参考时钟由 CPU54决定， CPU54与数字锁相环之间釆用 IIC或 SPI等串行总线连接。 需要说明的是， 本实施例是实际中实现解映射功能的硬件结构框图， 其 中， 并行 /串行转换器 51相当于图 4中的信号发送模块 41 , 串行 /并行转换器 52相当于图 4中的数据 /时钟恢复模块 42，数字锁相环 53相当于参考时钟生 成模块 43 , CPU54相当于图 4 中的自适应控制器 44， FPGA55相当于图 4 中的成帧器 45。 图 6是 居本发明优选实施例的流程图， 下面结合图 4中描述的结构对 该实施例进行描述： 步骤 S602,才艮据本装置支持的最高优先级的映射方式配置发送参考时钟 和成帧器的映射路径。 四种不同映射方式的发送参考时钟如表 1所示。 映射 路径即为 10GE映射到 OTU2/OTU2e/OTU 1 e的路径。 四种映射路径的描述 如表 1所示。 表 1 四种映射方式的发送参考时钟速率的参考表 优先级 映射方式 发送 /接收参考时钟速率
1 10GE->GFP->OTU2不透传前导码 10.7092GHz
2 10GE->GFP->OTU2透传前导码 10.7092GHz 3 10GE->OTU2e 11.0957GHz
4 10GE->OTUle 11.0491GHz 步骤 S604, 获取本设备支持的最高优先级的映射方式的优先级， 并将其 存入变 N。 步骤 S606, 才艮据优先级 N的映射方式配置接收参考时钟和成帧器的解 映射路径。 接收参考时钟可参照表 2, 成帧器的解映射路径描述可参考表 2, 过程相反。 表 2 四种映射方式的映射路径描述的参考表
Figure imgf000010_0001
步骤 S608, 自适应控制模块从数据 /时钟恢复模块中获取信号丢失指示, 如果信号丢失， 那么返回步 4聚 S602, 否则进入步 4聚 S612。 步骤 S610, 判断信号是否丢失。 步骤 S612, 自适应控制模块从成帧器获取 OTU帧的告警， 如果 OTU存 在业务失效类告警， 那么进入步 4聚 S616; 否则进入步 4聚 622。 步骤 S614, 判断业务是否失效。 步骤 S616, N的数值增加 1。 步骤 S618, 如果 N大于 M, 说明双方设备没有共同支持的映射方式， 返回步 4聚 S602。 否则进入步 4聚 S620。 其中 M 为该种客户业务信号映射进 OTU帧的方法总数。 步骤 S620,如果本设备支持优先级为 N的映射方式，那么返回步骤 S606; 否则返回步 4聚 S616。 步骤 S622, 自适应控制器从成帧器获得 OTN承载的客户业务的 GFP告 警指示。 步骤 S624,判断告警是否符合预期？ 如果判断结果为是，进入步骤 S626, 否则进入步骤 S616。 步骤 S626, 找到能够互通的映射方式， 居 N配置发送参考时钟和成 帧器的映射路径。 表 3 OTU帧的客户层预期的告警状态参考表
Figure imgf000011_0001
需要说明的是， 在附图的流程图示出的步骤可以在诸如一组计算机可执 行指令的计算机系统中执行， 并且， 虽然在流程图中示出了逻辑顺序， 但是 在某些情况下， 可以以不同于此处的顺序执行所示出或描述的步骤。 本发明还提供了一个优选实施例， 结合了上述多个优选实施例的技术方 案， 下面结合图 7来详细描述。 本实施例以接入 10GE业务为例。 设备 A和 B都均为 OTU帧解映射装 置。 其中设备 A支持表 1所示的 4种映射方式， 设备 B支持表 2所示的优先 级为 3、 4的映射方法。 设备 A和设备 B之间通过光纤连接。 设备上电后， 设备 A 将发送参考时钟设置为 10.7092GHz , 将映射方式设置为 10GE->GFP->OTU2 不透传前导码， 设备 B 奖发送参考时钟设置为 11.0957GHz, 将映射方式设置为 10GE->GFP->OTU2不透传前导码。 在光纤 连接好之后， 设备 A和设备 B均检测到信号丢失告警消失， 设备 A从优先 级 1开始根据优先级排序依次设置其发送参考时钟和解映射路径， 设备 B从 优先级 3开始根据优先级排序依次设置其发送参考时钟和解映射路径。 当设 备 A设置优先级为 3 的接收参考和解映射路径时， OTU层告警消失， GFP 层告警符合预期， （如果此时设备 B 的客户侧端口没有接入 10GE业务， 那 么设备 A检测到 GFP客户信号失效， 否则检测到 GFP无告警）。 设备 A将 接收参考时钟和解映射路径配置为优先级 3的方式， 并维持。 设备 B将接收 参考时钟和解映射路径设置为优先级 3 的方式时， OTU 层告警消失， GFP 层告警符合预期 （如果此时设备 A的客户侧端口没有接入 10GE业务， 那么 设备 B检测到 GFP客户信号失效， 否则检测到 GFP无告警）。 至此， 自适应 过程结束， 双方设备自动找到了均支持的 10GE信号的映射方式。 上述实施例， 能够在不占用开销的前提下自动识别互联的接入同种客户 业务信号的 OTN设备均支持的映射方式， 并实现自动配置， 且本发明既支 持装置之间自动识别、 自动配置， 又支持本发明所属的装置和非自动识别的 老设备之间自动设别、 自动配置。 本发明极大地方便了运营商在接入具有多 种映射进 OTU帧方式的客户信号时的互联互通操作， 具有极大的实用价值。 需要说明的是， 装置实施例中描述的 OTU 帧的解映射装置对应于上述 的方法实施例， 其具体的实现过程在方法实施例中已经进行过详细说明， 在 此不再赘述。 综上所述， 本发明能够自适应配置客户业务映射方式的方法， 使支持某 种客户信号的一种或多种到 OTN 映射方式的设备之间能够自动寻找到双方 设备能够互通的解映射方式。 承载某种客户信号的 OTN 装置可以在不更改 硬件的条件下， 仅通过升级软件就具备 OTN 中客户信号解映射自适应的功
显然， 本领域的技术人员应该明白， 上述的本发明的各模块或各步骤可 以用通用的计算装置来实现， 它们可以集中在单个的计算装置上， 或者分布 在多个计算装置所组成的网络上， 可选地， 它们可以用计算装置可执行的程 序代码来实现， 从而， 可以将它们存储在存储装置中由计算装置来执行， 并 且在某些情况下， 可以以不同于此处的顺序执行所示出或描述的步骤， 或者 将它们分别制作成各个集成电路模块， 或者将它们中的多个模块或步骤制作 成单个集成电路模块来实现。 这样， 本发明不限制于任何特定的硬件和软件 结合。 以上所述仅为本发明的优选实施例而已， 并不用于限制本发明， 对于本 领域的技术人员来说， 本发明可以有各种更改和变化。 凡在本发明的 ^"神和 原则之内， 所作的任何修改、 等同替换、 改进等， 均应包含在本发明的保护 范围之内。

Claims

权 利 要 求 书
1. 一种光传输单元 OTU帧的解映射方法， 其特征在于， 包括：
根据本地设备的 OTU 帧映射方式的最高优先级设置接收参考时钟 和解映射路径；
使用所述接收参考时钟和所述解映射路径来接收对端设备的 OTU 帧；
根据接收到的所述 OTU 帧的时钟恢复结果和客户业务告警指示确 定所述 OTU帧解映射的优先级；
使用所述确定的所述 OTU 帧解映射的优先级对应的所述接收参考 时钟和所述解映射路径对所述对端设备的 OTU帧进行解映射。
2. 居权利要求 1所述的方法， 其特征在于， 在才艮据接收到的所述 OTU帧 的时钟恢复结果和客户业务告警指示确定所述 OTU 帧解映射的优先级 之后， 还包括：
调整所述本地设备的所述 OTU 帧映射方式的优先级为所述确定的 所述 OTU帧解映射的优先级。
3. 根据权利要求 1所述的方法， 其特征在于，根据接收到的所述 OTU帧的 时钟恢复结果和客户业务告警指示确定所述 OTU 帧解映射的优先级包 括：
判断所述 OTU帧的时钟恢复结果是否为信号丢失；
如果判断结果为否， 获取所述 OTU帧的客户业务告警指示。
4. 根据权利要求 3所述的方法， 其特征在于， 在获取所述 OTU帧的客户业 务告警指示之后， 还包括： 如果所述客户业务告警为业务失效告警，则将所述 OTU帧解映射的 优先级提高一级，并 居提高一级后的所述 OTU帧解映射的优先级对应 的所述接收参考时钟进行所述时钟恢复步骤；
如果所述客户业务告警为客户层预期的告警状态，确定当 前优先级为所述 OTU帧解映射的优先级。
5. 居权利要求 4所述的方法， 其特征在于， 如果所述 OTU帧映射的优先 级大于所述 OTU帧映射优先级的总数， 则重新进行所述解映射过程。
6. —种光传输单元 OTU帧的解映射装置， 其特征在于， 包括：
设置模块，用于根据本地设备的 OTU帧映射方式的最高优先级设置 接收参考时钟和解映射路径；
接收模块， 用于使用所述接收参考时钟和所述解映射路径来接收对 端设备的 OTU帧；
确定模块，用于根据接收到的所述 OTU帧的时钟恢复结果和客户业 务告警指示确定所述 OTU帧解映射的优先级； 解映射模块，用于使用所述确定的所述 OTU帧解映射的优先级对应 的所述接收参考时钟和所述解映射路径对所述对端设备的 OTU 帧进行 解映射。
7. 根据权利要求 6所述的装置， 其特征在于， 还包括：
调整模块，用于调整所述本地设备的所述 OTU帧映射方式的优先级 为所述确定的所述 OTU帧解映射的优先级。
8. 根据权利要求 6所述的装置， 其特征在于， 确定模块包括：
判断模块， 用于判断所述 OTN帧的时钟恢复结果是否为信号丢失； 获取模块， 用于在判断结果为否的情况下， 获取所述 OTU帧的客户 业务告警指示。
9. 根据权利要求 6所述的装置， 其特征在于， 确定模块还包括：
优先级增加模块， 如果所述客户业务告警为业务失效告警， 则将所 述 OTU帧解映射的优先级提高一级；
优先级确定模块， 用于如果所述客户业务告警为客户层预期的告警 状态， 确定当前优先级为所述 OTU帧解映射的优先级。
10. 居权利要求 9所述的装置， 其特征在于， 如果所述 OTU帧解映射的优 先级大于所述 OTU帧映射优先级的总数， 则重新进行所述解映射过程。
PCT/CN2010/078132 2010-06-08 2010-10-26 光传输单元帧的解映射方法及装置 WO2011153781A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US13/702,693 US8982712B2 (en) 2010-06-08 2010-10-26 De-mapping method and device for optical transport unit frame
EP10852772.2A EP2582070B1 (en) 2010-06-08 2010-10-26 De-mapping method and device for optical transport unit frame

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201010203103.X 2010-06-08
CN201010203103.XA CN101848066B (zh) 2010-06-08 2010-06-08 光传输单元帧的解映射方法及装置

Publications (1)

Publication Number Publication Date
WO2011153781A1 true WO2011153781A1 (zh) 2011-12-15

Family

ID=42772535

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2010/078132 WO2011153781A1 (zh) 2010-06-08 2010-10-26 光传输单元帧的解映射方法及装置

Country Status (4)

Country Link
US (1) US8982712B2 (zh)
EP (1) EP2582070B1 (zh)
CN (1) CN101848066B (zh)
WO (1) WO2011153781A1 (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101848066B (zh) * 2010-06-08 2014-08-13 中兴通讯股份有限公司 光传输单元帧的解映射方法及装置
EP2618536A4 (en) * 2012-04-25 2014-02-19 Huawei Tech Co Ltd METHOD AND DEVICE FOR UNIFIEDING IMAGE RATES
US10447463B2 (en) * 2017-07-13 2019-10-15 Orthogone Technologies Inc. Device and method for ultra-low latency communication

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1984018A (zh) * 2006-05-17 2007-06-20 华为技术有限公司 通过光传送网透传光通道传输单元信号的方法和装置
CN101350691A (zh) * 2008-09-05 2009-01-21 华为技术有限公司 一种业务汇聚和adm分插复用方法及设备
CN101378399A (zh) * 2008-09-28 2009-03-04 华为技术有限公司 业务数据映射和解映射方法及装置
CN101702637A (zh) * 2009-10-30 2010-05-05 中兴通讯股份有限公司 时隙交叉方法和系统
CN101848066A (zh) * 2010-06-08 2010-09-29 中兴通讯股份有限公司 光传输单元帧的解映射方法及装置

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8107820B2 (en) * 2006-10-13 2012-01-31 Menara Networks, Inc. Systems and methods for the integration of framing, OAM&P, and forward error correction in SFP optical transceiver devices
GB0031839D0 (en) * 2000-12-29 2001-02-14 Marconi Comm Ltd A multi-service digital cross-connect
US7573871B2 (en) * 2002-01-16 2009-08-11 Transwitch Israel, Ltd. Apparatus for processing OTN frames utilizing an efficient forward error correction
CN100373847C (zh) * 2004-12-14 2008-03-05 华为技术有限公司 在光传送网中传输低速率业务信号的方法
CN100561962C (zh) * 2005-11-24 2009-11-18 华为技术有限公司 基于目录服务来实现网络连接服务建立的方法及系统
US7580629B2 (en) * 2006-05-15 2009-08-25 Nortel Networks Limited Los beat detector
CN1983888B (zh) * 2006-06-07 2010-10-27 华为技术有限公司 一种时钟恢复装置和方法
EP3493433A1 (en) * 2007-01-17 2019-06-05 Nippon Telegraph and Telephone Corporation Digital transmission system and digital transmission method
CN101272215B (zh) * 2007-03-20 2012-07-04 中兴通讯股份有限公司 光传输单元帧生成方法与装置及传递时钟等级方法与装置
CN101621372B (zh) * 2008-06-30 2013-01-30 华为技术有限公司 一种传送网络异步背板主备倒换的方法及装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1984018A (zh) * 2006-05-17 2007-06-20 华为技术有限公司 通过光传送网透传光通道传输单元信号的方法和装置
CN101350691A (zh) * 2008-09-05 2009-01-21 华为技术有限公司 一种业务汇聚和adm分插复用方法及设备
CN101378399A (zh) * 2008-09-28 2009-03-04 华为技术有限公司 业务数据映射和解映射方法及装置
CN101702637A (zh) * 2009-10-30 2010-05-05 中兴通讯股份有限公司 时隙交叉方法和系统
CN101848066A (zh) * 2010-06-08 2010-09-29 中兴通讯股份有限公司 光传输单元帧的解映射方法及装置

Also Published As

Publication number Publication date
US8982712B2 (en) 2015-03-17
EP2582070A1 (en) 2013-04-17
US20130077959A1 (en) 2013-03-28
CN101848066B (zh) 2014-08-13
EP2582070B1 (en) 2019-01-02
EP2582070A4 (en) 2017-04-05
CN101848066A (zh) 2010-09-29

Similar Documents

Publication Publication Date Title
US11063686B2 (en) Method and apparatus for mapping and de-mapping in an optical transport network
US11316802B2 (en) Time transfer systems and methods over a stream of Ethernet blocks
US9264139B2 (en) Optical transport network clock transient suppression systems and methods
US9800361B2 (en) Flexible ethernet switching systems and methods
CN109947681B (zh) 串化/解串器及高速接口协议交换芯片
US9088380B2 (en) Optical transport network generic non-client specific protection systems and methods
US9020345B2 (en) Method and system for establishing end-to-end service and optical transport network
US9048967B2 (en) Asymmetric OTN network traffic support
JP6051316B2 (ja) 光伝送ネットワーク内で信号を伝送するための方法および装置
WO2012155710A1 (zh) 一种实现otn业务映射及解映射的方法和装置
US9008504B2 (en) Transmission apparatus and method for serial and parallel channel interworking in optical transport network
CN102640442A (zh) 纠错方法以及装置
WO2011153781A1 (zh) 光传输单元帧的解映射方法及装置
US20110170866A1 (en) Transporting Optical Data Units In An Optical Transport Network
WO2009065281A1 (fr) Procédé de transmission transparente de signal ethernet 10ge par l'intermédiaire du réseau de transport optique
US9025623B2 (en) Method and apparatus for implementing self-adaption of cross granularity in optical transport network
JP5736964B2 (ja) 伝送装置及びデータ伝送方法
JP2012195884A (ja) 光伝送システム、光伝送装置及び光伝送方法
EP2713536A2 (en) Optical transport network generic non-client specific protection systems and methods
US20160142798A1 (en) Transmission apparatus
US20230379078A1 (en) Optical transmission apparatus and optical transmission method
WO2024187967A1 (zh) 一种传输时钟信息的方法、装置和系统
EP2784956A2 (en) Asymmetric OTN network traffic support
CN115664519A (zh) 一种应用于dci设备100g&200g fpga设计方法
CN114189307A (zh) Otn的信号传输方法、系统和otu0接口装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10852772

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 13702693

Country of ref document: US

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 2010852772

Country of ref document: EP