WO2012037809A1 - 一种实现光传送网开销处理的装置及方法 - Google Patents

一种实现光传送网开销处理的装置及方法 Download PDF

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Publication number
WO2012037809A1
WO2012037809A1 PCT/CN2011/072846 CN2011072846W WO2012037809A1 WO 2012037809 A1 WO2012037809 A1 WO 2012037809A1 CN 2011072846 W CN2011072846 W CN 2011072846W WO 2012037809 A1 WO2012037809 A1 WO 2012037809A1
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overhead
data
module
multiplexing
processing
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PCT/CN2011/072846
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English (en)
French (fr)
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钟长龙
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中兴通讯股份有限公司
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/06Management of faults, events, alarms or notifications
    • 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]

Definitions

  • the present invention relates to the field of optical communications, and in particular, to an apparatus and method for implementing overhead processing of an Optical Transport Network (OTN).
  • OTN Optical Transport Network
  • 0TN is a transmission network that organizes networks in the optical layer based on wavelength division multiplexing technology and is the next generation backbone transmission network.
  • 0TN adopts a new generation of "digital transmission system” and "optical transmission system” standardized by a series of ITU-T recommendations such as G.872, G.709, and G.798.
  • 0TN will solve the problem of no wavelength/sub-wavelength service scheduling capability, weak networking capability, and weak protection capability of the traditional wavelength division multiplexing (WDM) network.
  • WDM wavelength division multiplexing
  • 0TN currently defines three speed class services, namely 0TU1, OTU2, and OTU3.
  • the figure is a frame structure diagram of an Optical Channel Transport Unit (OTUk).
  • the OTUk signal format is 4 rows by 4080 columns.
  • the OTUk signal includes an Optical Channel Data Unit (ODUk).
  • the ODUk signal format is 4 rows by 3824 columns, and the ODUk signal includes an Optical Channel Payload Unit (OPUk).
  • OPUk signal format is 4 rows by 3808 columns.
  • the first 16 columns of the OTUk frame contain the overhead of OTUk, ODUk, OPUk.
  • the low-order ODUk signal can be multiplexed into a high-order OTUk signal. Please refer to FIG.
  • the present invention provides an apparatus and method for implementing OTN overhead processing, which solves the problem of large logic resource consumption in the OTN overhead processing process in the prior art.
  • the present invention provides an apparatus for implementing an optical transport network overhead processing, where the apparatus includes: an overhead extraction module, an overhead multiplexing demultiplexing module, an overhead processing module, and an overhead insertion module; wherein, an overhead extraction module is configured to extract an ODUk Overhead data, which is sent to the overhead multiplexing demultiplexing module;
  • the overhead multiplexing demultiplexing module is configured to serially process the received overhead data, and send the overhead data to the overhead processing module according to the sorting result, and is also used to solve the overhead data received from the overhead processing module. Reuse, distribute it to each overhead insertion module;
  • the overhead processing module is configured to detect the overhead alarm information from the received overhead data and report it to the console, and is configured to generate corresponding overhead data according to the console requirement and send the data to the overhead multiplexing demultiplexing module.
  • the overhead insertion module is configured to insert overhead data belonging to the local path extracted from the overhead multiplexing demultiplexing module into an overhead location of the local ODUk.
  • the device further includes:
  • the interface module is configured to report the overhead alarm information detected by the overhead processing module to the console, and send the overhead generation instruction of the console to the overhead processing module.
  • the overhead multiplexing demultiplexing module includes: an input first in first out (FIFO) module, a control module, a data queuing output module, a data queuing input module, and an output FIFO module;
  • FIFO input first in first out
  • Input FIFO module for performing first-in, first-out buffering of overhead data of ODUk
  • the overhead arrival indication signal is sent to the control module;
  • the control module is configured to read the overhead arrival indication signal of the input FIFO module by using a polling manner, and read the corresponding overhead data to the data according to the overhead arrival indication signal.
  • the queuing output module is further configured to enable the corresponding output FIFO module according to the arrival indication signal of each overhead data to make the write valid;
  • the data queuing output module is configured to multiplex the overhead data in the corresponding input FIFO module to the overhead multiplexing data bus according to the enabling signal given by the control module, and send the data to the overhead processing module;
  • the data queuing input module is configured to determine the overhead
  • the processing module omits the arrival time of each overhead data input by the data bus by the overhead multiplexing, and gives a corresponding overhead arrival indication signal to the control module, and sends the overhead data to each output first-in first-out module;
  • the output FIFO module is configured to receive the overhead data of the data queue input module according to the enable signal given by the control module, perform FIFO buffering, and enable the readout according to the overhead given by the overhead insertion module, and read the ODUk of the local channel.
  • the overhead data is sent to the overhead insertion module.
  • control module reads out the corresponding overhead data from the input overhead data before the next overhead data of the input FIFO module arrives, and outputs the corresponding overhead data to the data queuing output module.
  • the number of the input first-in first-out module and the output first-in-first-out module in the overhead multiplexing demultiplexing module is the same, and the value of the quantity depends on the sum of the rates of the ODUk overhead data of each channel and the data queuing output module. Data output rate.
  • the overhead data extracted by the overhead extraction module is the first 16 columns of data of 4 rows of the ODUk frame.
  • a method for implementing an optical transport network overhead processing by the above apparatus provided by the present invention comprising:
  • the overhead extraction module extracts the overhead data of the ODUk, and sends it to the overhead multiplexing demultiplexing module for serial processing and sorting, and the overhead multiplexing demultiplexing module sequentially sends the overhead data to the overhead processing module according to the sorting result;
  • the cost processing module detects the overhead alarm information from the received overhead data and reports it to the console, and generates corresponding overhead data according to the requirements of the console, and sends the corresponding overhead data to the overhead multiplexing demultiplexing module.
  • the overhead multiplexing demultiplexing module demultiplexes the overhead data received from the overhead processing module, distributes the demultiplexed overhead data to each overhead insertion module, and inserts the overhead data by the overhead insertion module.
  • the overhead multiplexing demultiplexing module performs serial processing sorting, and sequentially sends the overhead data to the overhead processing module according to the sorting result, which is:
  • the corresponding overhead data is read according to the overhead arrival indication signal, multiplexed into the overhead multiplexing data bus, and sent to the overhead processing module.
  • the specific process of the overhead multiplexing demultiplexing module demultiplexing the overhead data received from the overhead processing module and distributing the demultiplexed overhead data to each cost insertion module is:
  • the received overhead data is FIFO buffered according to the arrival indication signal of each overhead data, and is read and enabled according to the overhead given by the overhead insertion module, and the overhead data of the local ODUk is read and sent to the overhead insertion module.
  • the technical solution of the present invention reduces the logic resources required in the OTN overhead processing process, realizes the modular multiplexing processing of the overhead processing, and greatly reduces the cost.
  • Figure 1 is a frame structure diagram of OTUk; 2 is a schematic diagram of demodulating an ODU0 signal from an OTU2 signal;
  • FIG. 3 is a structural block diagram of an apparatus for implementing an overhead processing of an optical transport network according to an embodiment of the present invention
  • FIG. 4 is a structural block diagram of an overhead multiplexing demultiplexing module in an apparatus for implementing an optical transport network overhead processing according to an embodiment of the present invention
  • FIG. 5 is a flowchart of a method for implementing overhead processing of an optical transport network according to an embodiment of the present invention. detailed description
  • the structural block diagram mainly includes: an overhead extraction module, an overhead multiplexing demultiplexing module, an overhead processing module, and an overhead insertion module;
  • the overhead extraction module is configured to extract various types of overhead data from the ODUk data and send the same to the overhead multiplexing demultiplexing module, where the main data is extracted from the first 16 columns of the ODUk frame.
  • the overhead multiplexing demultiplexing module is configured to receive the overhead data sent by the overhead extraction module, serially process the data according to the arrival time of the overhead data, and send the overhead data to the overhead processing module according to the sorting result, and is also used for
  • the overhead data received from the overhead processing module is demultiplexed, and the demultiplexed overhead data is distributed to each overhead insertion module.
  • the overhead processing module is configured to process the received overhead data according to the OTN overhead processing requirement, and report the overhead alarm information to the console from the received overhead data, and generate the corresponding overhead data according to the console requirement. Send to the overhead multiplexing demultiplexing module.
  • the overhead insertion module is configured to insert overhead data belonging to the local ODUk data extracted from the overhead multiplexing demultiplexing module into an overhead location of the local ODUk data.
  • the device further includes: an interface module, configured to report the overhead alarm information detected by the overhead processing module to the console, and send the overhead generation instruction of the console to the overhead processing module.
  • the structural block diagram of the overhead multiplexing demultiplexing module mainly includes: an input FIFO module, a control module, a data queuing output module, a data queuing input module, and an output FIFO module; wherein
  • the input FIFO module is used for FIFO buffering the overhead data of the ODUk. Since the incoming multi-path overhead data arrival time is random, the randomly arrived ODUk overhead data needs to be written into the FIFO buffer for storage and waiting for processing. After all the overhead data of the local ODUk is written into the FIFO buffer, an overhead arrival indication signal is sent to the control module to notify the control module that the overhead data of the local ODUk has arrived, and the control module needs to be processed.
  • the control module is configured to perform multiplexing control on the overhead data received by the multi-input FIFO module.
  • Polling mode continuously reads the overhead of the input FIFO module to reach the indication signal, and determines whether to read the corresponding overhead data to the data queuing output module.
  • For the overhead data of the input parallel multipath ODUk it is necessary to output the overhead data in the input FIFO module to the overhead processing module according to the overhead arrival indication signal given by the input FIFO module before the next acquisition arrives. It is also used to de-multiplex the overhead data output by the overhead processing module, and enable the corresponding output FIFO module according to the arrival indication signal of each overhead data to make the write valid.
  • the data queuing output module is configured to multiplex the overhead data in the corresponding input FIFO module to the overhead multiplexing data bus according to the enable signal given by the control module, and send the data to the overhead processing module.
  • the data queuing input module is configured to determine an arrival time of each overhead data input by the overhead processing module through the overhead multiplexing data bus, and provide a corresponding overhead arrival indication signal to the control module, and send the overhead data to each output FIFO module.
  • the output FIFO module is configured to receive the overhead data of the data queuing input module according to the enable signal given by the control module, perform FIFO buffering, and enable the readout according to the overhead given by the overhead insertion module, and read from the FIFO buffer
  • the overhead data of the local ODUk is sent to the overhead insertion module.
  • the number of input FIFO modules and output FIFO modules in the overhead multiplexing demultiplexing module is the same, and the value N depends on the sum of the rates of the overhead ODUk overhead data and the data queuing output module.
  • Data output rate Assume that the first channel overhead rate is S1, the second channel overhead rate is S2, and so on, the Nth channel overhead rate is Sn, and the data queuing output module has a data output rate of A, and the relationship S1+S2+ +Sn ⁇ A, can calculate N.
  • the present invention also implements a method for processing overhead of an optical transport network, the method comprising the following steps:
  • the overhead extraction module extracts the overhead data of the ODUk, and sends the overhead data to the overhead multiplexing demultiplexing module for serial processing and sorting, and the overhead multiplexing demultiplexing module sequentially sends the overhead data to the overhead processing module according to the sorting result. ;
  • the overhead processing module detects the overhead alarm information from the received overhead data and reports it to the control station, and generates corresponding overhead data according to the console request and sends the corresponding overhead data to the overhead multiplexing demultiplexing module.
  • the overhead multiplexing demultiplexing module demultiplexes the overhead data received from the overhead processing module, distributes the demultiplexed overhead data to each overhead insertion module, and inserts the overhead data into the present by the overhead insertion module.
  • the overhead location of the optical path data unit demultiplexes the overhead data received from the overhead processing module, distributes the demultiplexed overhead data to each overhead insertion module, and inserts the overhead data into the present by the overhead insertion module.
  • the overhead multiplexing demultiplexing module serially processes the overhead data, and the specific process of sequentially sending the overhead data to the overhead processing module according to the sorting result is:
  • the overhead multiplexing demultiplexing module performs FIFO buffering on the overhead data of the ODUk. After the overhead data of the local ODUk arrives completely, the overhead arrival indication signal is sent; and the corresponding overhead data is read according to the overhead arrival indication signal, and the complex data is read.
  • the overhead multiplexing data bus is used and sent to the overhead processing module.
  • the specific process of the overhead multiplexing demultiplexing module for demultiplexing the overhead data received from the overhead processing module and distributing the same to the overhead insertion module is:
  • the overhead multiplexing demultiplexing module determines an arrival time of each overhead data input by the overhead processing module by the overhead multiplexing data bus, and sends an overhead arrival indication signal; and the received overhead data according to the arrival indication signal of each overhead data.
  • FIFO buffering, inserting modules according to overhead The overhead read enable is given, and the overhead data of the local ODUk is read and sent to the overhead insertion module.
  • the overhead data extracted by the overhead extraction module is the first 16 columns of data of 4 rows of the ODUk frame.
  • Step S501 the overhead extraction module extracts the overhead data of the ODUk, and sends it to the input FIFO module of the overhead multiplexing demultiplexing module;
  • the overhead data extracted by the overhead extraction module is the first 16 columns of data of the ODUk frame.
  • Step S502 The input FIFO module performs FIFO buffering on the overhead data of the ODUk, and after the overhead data of the local ODUk arrives completely, sends an overhead arrival indication signal to the control module of the overhead multiplexing demultiplexing module.
  • Step S503 The control module sends the overhead data of the read input FIFO module to the data queuing output module according to the overhead arrival indication.
  • control module arrives at the indication signal according to the overhead given by each input FIFO module, and uses the polling method to read the overhead data of each input FIFO module and send it to the data queuing output module.
  • polling method it is necessary to ensure that the contents of the FIFO buffer in each input FIFO module are read out in time before the next arrival of the overhead to ensure that the overhead data is not overwritten.
  • Step S504 The data queuing output module multiplexes the overhead data in the corresponding input FIFO module to the overhead multiplexing data bus according to the enable signal given by the control module, and sends the overhead data to the overhead processing module.
  • Step S505 The overhead processing module processes the received various types of overhead data in sequence according to the OTN overhead processing requirement, and reports the overhead alarm information to the console from the received overhead data.
  • Step S506 the overhead processing module generates various types of overhead data according to the requirements of the console, and Inserted into the corresponding location of the overhead multiplexed data bus, and sent to the data queuing input module.
  • Step S507 The data queuing input module provides a corresponding overhead arrival indication signal to the control module according to the arrival time of each overhead data input by the overhead multiplexing data bus, and sends the overhead data to each output FIFO module.
  • Step S508 The control module enables the corresponding output FIFO module according to the arrival indication signal of each overhead data, which enables the output FIFO module to write valid.
  • Step S509 The data queuing input module writes the corresponding overhead data into the output FIFO module.
  • Step S510 The overhead insertion module sends an overhead read enable signal of the local ODUk to the output FIFO module according to the frame transfer frame header of the local ODUk.
  • Step S511 The output FIFO module reads and enables the overhead according to the overhead insertion module, and reads the local overhead data to the overhead insertion module.
  • Step S512 The overhead insertion module inserts the overhead data read out from the output FIFO module into the overhead position of the local ODUk.

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Description

一种实现光传送网开销处理的装置及方法 技术领域
本发现涉及光通信领域, 尤其涉及一种实现光传送网 (OTN, Optical Transport Network )开销处理的装置及方法。 背景技术
0TN是以波分复用技术为基础、 在光层组织网络的传送网, 是下一代 的骨干传送网。 0TN通过 G.872、 G.709、 G.798等一系列 ITU-T的建议所 规范的新一代 "数字传送体系"和 "光传送体系"。 0TN将解决传统波分复 用 (WDM, Wavelength Division Multiplexing )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。
0TN目前定义了三种速度等级的业务, 分别是 0TU1、 OTU2、 OTU3。 参见图 1 , 该图为光通路传送单元(OTUk, Optical Channel Transport Unit ) 的帧结构图, OTUk信号格式是 4行乘 4080列, OTUk信号包含了光通路 数据单元( ODUk, Optical Channel Data Unit )。 ODUk信号格式是 4行乘 3824列, ODUk信号包含了光通路净荷单元( OPUk, Optical Channel Payload Unit )。 OPUk信号格式是 4行乘 3808列。 OTUk帧的前 16列包含了 OTUk、 ODUk, OPUk的开销。低阶的 ODUk信号可以复接成为高阶的 OTUk信号。 请参阅图 2, 该图为从 OTU2信号解复接得到 ODU0信号的示意图, 由图 中可见, 当高阶的 ODUk信号解复接到低阶的 ODUk信号时, 需要处理解 复接得到的多个低阶 ODUk信号开销。 一个 ODU2信号可以解复接得到 4 路 ODU1信号,一路 ODU1信号又可以进一步解复接得到 2路 ODU0信号, 从而可以知道对于 1路 ODU2信号来说,可能需要处理多达 13路开销数据。 如果每一路开销数据均独立处理, 釆用现场可编程门阵列 (FPGA , Field-Programmable Gate Array ) 或者专用集成电路 ( ASIC , Application Specific Intergrated Circuits ) 实现, 将非常消耗资源。 发明内容
本发明提供一种实现 OTN开销处理的装置及方法, 用以解决现有技术 中 OTN开销处理过程中逻辑资源消耗大的问题。
本发明所述技术方案包括:
本发明提供的一种实现光传送网开销处理的装置, 该装置包括: 开销 提取模块、 开销复用解复用模块、 开销处理模块、 开销插入模块; 其中, 开销提取模块, 用于提取 ODUk的开销数据, 将其发送给开销复用解 复用模块;
开销复用解复用模块, 用于对接收到的开销数据进行串行处理排序, 按照排序结果将开销数据依次送往开销处理模块, 还用于对从开销处理模 块接收到的开销数据进行解复用, 将其分发给各路开销插入模块;
开销处理模块, 用于从接收到的开销数据中检测开销告警信息并上报 给控制台, 还用于根据控制台要求生成相应的开销数据发送给开销复用解 复用模块;
开销插入模块, 用于将从开销复用解复用模块提取的属于本路的开销 数据插入到本路 ODUk的开销位置。
进一步地, 所述装置还包括:
接口模块, 用于将开销处理模块检测出的开销告警信息上报给控制台, 以及将控制台的开销生成指令发送给开销处理模块。
进一步地, 所述开销复用解复用模块包括: 输入先入先出(FIFO, First In First Out )模块、 控制模块、 数据排队输出模块、 数据排队输入模块、 输 出 FIFO模块; 其中,
输入 FIFO模块,用于对 ODUk的开销数据进行先入先出緩存, 当本路 ODUk的开销数据到达后, 向控制模块发送开销到达指示信号; 控制模块, 用于釆用轮询方式读取输入 FIFO模块的开销到达指示信 号, 根据开销到达指示信号读取相应的开销数据给数据排队输出模块, 还 用于根据各路开销数据的到达指示信号使能相应的输出 FIFO模块,使其写 有效;
数据排队输出模块, 用于根据控制模块给出的使能信号, 将相应输入 FIFO模块中的开销数据复用到开销复用数据总线, 发送给开销处理模块; 数据排队输入模块, 用于确定开销处理模块通过开销复用数据总线输 入的各路开销数据的到达时间, 给出相应开销到达指示信号给控制模块, 并将开销数据送给各路输出先入先出模块;
输出 FIFO模块, 用于根据控制模块给出的使能信号, 接收数据排队输 入模块的开销数据, 对其进行 FIFO緩存, 根据开销插入模块给出的开销读 出使能, 读出本路 ODUk的开销数据送到开销插入模块。
进一步地,所述控制模块在输入 FIFO模块的下一次开销数据到达之前 从中读出相应的开销数据, 输出给数据排队输出模块。
进一步地, 所述开销复用解复用模块中输入先入先出模块和输出先入 先出模块的数量相同, 所述数量的取值取决于各路 ODUk开销数据的速率 之和以及数据排队输出模块的数据输出速率。
进一步地, 所述开销提取模块提取的开销数据是 ODUk帧 4行的前 16 列数据。
本发明提供的一种上述装置实现光传送网开销处理的方法, 该方法包 括:
A、开销提取模块提取 ODUk的开销数据,将其发送给开销复用解复用 模块进行串行处理排序, 开销复用解复用模块按照排序结果将开销数据依 次送往开销处理模块; B、开销处理模块从接收到的开销数据中检测开销告警信息并上报给控 制台, 以及根据控制台要求生成相应的开销数据发送给开销复用解复用模 块;
C、开销复用解复用模块对从开销处理模块接收到的开销数据进行解复 用, 将解复用后的开销数据分发给各路开销插入模块, 由开销插入模块将 所述开销数据插入到本路 ODUk的开销位置。
进一步地, 所述开销复用解复用模块进行串行处理排序, 按照排序结 果将开销数据依次送往开销处理模块, 为:
对 ODUk的开销数据进行 FIFO緩存, 当本路 ODUk的开销数据到达 后, 发出开销到达指示信号;
根据开销到达指示信号读取相应的开销数据, 将其复用到开销复用数 据总线, 发送给开销处理模块。
进一步地, 所述开销复用解复用模块对从开销处理模块接收到的开销 数据进行解复用, 将解复用后的开销数据分发给各路开销插入模块的具体 过程为:
确定开销处理模块通过开销复用数据总线输入的各路开销数据的到达 时间, 发出开销到达指示信号;
根据各路开销数据的到达指示信号对接收到的开销数据进行 FIFO緩 存, 根据开销插入模块给出的开销读出使能, 读出本路 ODUk的开销数据 送到开销插入模块。
本发明有益效果如下:
本发明所述技术方案与现有技术相比, 减少了 OTN开销处理过程中需 要的逻辑资源, 实现了开销处理的模块化复用处理, 大大降低了成本。 附图说明
图 1为 OTUk的帧结构图; 图 2为从 OTU2信号解复接得到 ODU0信号的示意图;
图 3为本发明实施例所述实现光传送网开销处理的装置的结构框图; 图 4为本发明实施例所述实现光传送网开销处理的装置中开销复用解 复用模块的结构框图;
图 5为本发明实施例所述实现光传送网开销处理的方法的流程图。 具体实施方式
下面将结合各个附图对本发明的具体实现过程予以进一步详细的说 明。 结构框图, 其主要包括: 开销提取模块、 开销复用解复用模块、 开销处理 模块、 开销插入模块; 其中,
开销提取模块, 用于从 ODUk数据中提取各类开销数据, 将其发送给 开销复用解复用模块, 其主要提取的是 ODUk帧 4行的前 16列数据。
开销复用解复用模块, 用于接收开销提取模块发送的开销数据, 根据 开销数据的到达时间对其进行串行处理排序, 按照排序结果将开销数据依 次送往开销处理模块, 还用于对从开销处理模块接收到的开销数据进行解 复用, 将解复用后的开销数据分发给各路开销插入模块。
开销处理模块, 用于根据 OTN开销处理要求对接收到的各类开销数据 进行处理, 从接收到的开销数据中检测开销告警信息上报给控制台, 还用 于根据控制台要求生成相应的开销数据发送给开销复用解复用模块。
开销插入模块, 用于将从开销复用解复用模块提取的属于本路 ODUk 数据的开销数据插入到本路 ODUk数据的开销位置。
进一步的, 该装置还包括: 接口模块, 用于将开销处理模块检测出的 开销告警信息上报给控制台, 以及将控制台的开销生成指令发送给开销处 理模块。 开销复用解复用模块的结构框图,其主要包括:输入 FIFO模块、控制模块、 数据排队输出模块、 数据排队输入模块、 输出 FIFO模块; 其中,
输入 FIFO模块, 用于对 ODUk的开销数据进行 FIFO緩存, 由于输入 的多路开销数据到达时间是随机的, 需要把随机到达的 ODUk开销数据写 入到 FIFO緩存器保存起来,等待处理。 当本路 ODUk的开销数据全部写入 到 FIFO緩存器之后, 向控制模块发送开销到达指示信号, 通知控制模块本 路 ODUk的开销数据已经到达, 需要控制模块进行处理。
控制模块, 用于对多路输入 FIFO模块接收到的开销数据进行复用控 制。 釆用轮询方式不断的读取输入 FIFO模块的开销到达指示信号, 决定是 否读出相应的开销数据给数据排队输出模块。 对于输入的并行多路 ODUk 的开销数据,需要根据输入 FIFO模块给出的开销到达指示信号在下一次开 销到达之前将该输入 FIFO模块中的开销数据输出给开销处理模块。还用于 对开销处理模块输出的开销数据进行解复用控制, 根据各路开销数据的到 达指示信号使能相应的输出 FIFO模块, 使其写有效。
数据排队输出模块, 用于根据控制模块给出的使能信号, 将相应输入 FIFO模块中的开销数据复用到开销复用数据总线, 发送给开销处理模块。
数据排队输入模块, 用于确定开销处理模块通过开销复用数据总线输 入的各路开销数据的到达时间, 给出相应开销到达指示信号给控制模块, 并将开销数据送给各路输出 FIFO模块。
输出 FIFO模块, 用于根据控制模块给出的使能信号, 接收数据排队输 入模块的开销数据, 对其进行 FIFO緩存, 根据开销插入模块给出的开销读 出使能, 从 FIFO緩存器中读出本路 ODUk的开销数据送到开销插入模块。
开销复用解复用模块中输入 FIFO模块和输出 FIFO模块的数量相同, 其取值 N取决于各路 ODUk开销数据的速率之和以及数据排队输出模块的 数据输出速率。 假设第 1路开销速率为 S1 , 第 2路开销速率为 S2, 以此类 推, 第 N路开销速率为 Sn, 而数据排队输出模块的数据输出速率为 A, 由 关系式 S1+S2+ +Sn < A, 可以推算出 N。
基于上述装置, 本发明还实现一种光传送网开销处理的方法, 该方法 包括以下几个步骤:
A、开销提取模块提取 ODUk的开销数据,将所述开销数据发送给开销 复用解复用模块进行串行处理排序, 开销复用解复用模块按照排序结果将 开销数据依次送往开销处理模块;
B、开销处理模块从接收到的开销数据中检测开销告警信息并上报给控 制台, 以及根据控制台要求生成相应的开销数据发送给开销复用解复用模 块;
C、开销复用解复用模块对从开销处理模块接收到的开销数据进行解复 用, 将解复用后的开销数据分发给各路开销插入模块, 由开销插入模块将 开销数据插入到本路光通路数据单元的开销位置。
所述开销复用解复用模块对开销数据进行串行处理排序, 按照排序结 果将开销数据依次送往开销处理模块的具体过程为:
所述开销复用解复用模块对 ODUk的开销数据进行 FIFO緩存,当本路 ODUk 的开销数据完全到达后, 发出开销到达指示信号; 根据开销到达指 示信号读取相应的开销数据, 将其复用到开销复用数据总线, 发送给开销 处理模块。
所述开销复用解复用模块对从开销处理模块接收到的开销数据进行解 复用, 将其分发给各路开销插入模块的具体过程为:
所述开销复用解复用模块确定开销处理模块通过开销复用数据总线输 入的各路开销数据的到达时间, 发出开销到达指示信号; 根据各路开销数 据的到达指示信号对接收到的开销数据进行 FIFO緩存,根据开销插入模块 给出的开销读出使能, 读出本路 ODUk的开销数据送到开销插入模块。 上述步骤 A中, 所述开销提取模块提取的开销数据是 ODUk帧 4行的 前 16列数据。 要包括如下步骤:
步骤 S501、 开销提取模块提取 ODUk的开销数据, 将其送往开销复用 解复用模块的输入 FIFO模块中;
本步骤中,开销提取模块提取的开销数据是 ODUk帧的 4行前 16列数 据。
步骤 S502、输入 FIFO模块对 ODUk的开销数据进行 FIFO緩存, 当本 路 ODUk的开销数据完全到达后, 向开销复用解复用模块的控制模块发出 开销到达指示信号。
步骤 S503、 控制模块根据开销到达指示读出输入 FIFO模块的开销数 据送给数据排队输出模块;
具体的, 控制模块根据各个输入 FIFO模块给出的开销到达指示信号, 釆用轮询的方式, 读出各个输入 FIFO模块的开销数据, 将其送给数据排队 输出模块。 在这里, 需要保证每个输入 FIFO模块中 FIFO緩存器的内容在 开销下次到达之前会被及时读出, 以保证开销数据不被覆盖。
步骤 S504、 数据排队输出模块根据控制模块给出的使能信号, 将相应 输入 FIFO模块中的开销数据复用到开销复用数据总线,将开销数据发送给 开销处理模块。
步骤 S505、开销处理模块根据 OTN开销处理要求对接收到的各类开销 数据依次进行处理, 以及从接收到的开销数据中检测开销告警信息上报给 控制台。
步骤 S506、 开销处理模块根据控制台的要求产生各类开销数据, 将其 插入到开销复用数据总线的对应位置, 送给数据排队输入模块。
步骤 S507、 数据排队输入模块根据开销复用数据总线输入的各路开销 数据的到达时间, 给出相应开销到达指示信号给控制模块, 同时将开销数 据送给各路输出 FIFO模块。
步骤 S508、 控制模块根据各路开销数据的到达指示信号使能相应的输 出 FIFO模块, 此使能使得输出 FIFO模块写有效。
步骤 S509、 数据排队输入模块将对应的开销数据写入到输出 FIFO模 块中。
步骤 S510、 开销插入模块根据本路 ODUk 的帧传送帧头, 给出本路 ODUk的开销读出使能信号给输出 FIFO模块。
步骤 S511、 输出 FIFO模块根据开销插入模块给出的开销读出使能, 读出本路开销数据到开销插入模块。
步骤 S512、 开销插入模块将从输出 FIFO模块读出的开销数据插入到 本路 ODUk的开销位置。 本发明的精神和范围。 这样, 倘若本发明的这些修改和变型属于本发明权 利要求及其等同技术的范围之内, 则本发明也意图包含这些改动和变型在 内。

Claims

权利要求书
1、 一种实现光传送网开销处理的装置, 其特征在于, 该装置包括: 开销提取模块, 用于提取光通路数据单元的开销数据, 将其发送给开 销复用解复用模块;
开销复用解复用模块, 用于对接收到的开销数据进行串行处理排序, 按照排序结果将开销数据依次送往开销处理模块, 还用于对从开销处理模 块接收到的开销数据进行解复用, 将其分发给各路开销插入模块;
开销处理模块, 用于从接收到的开销数据中检测开销告警信息并上报 给控制台, 还用于根据控制台要求生成相应的开销数据发送给开销复用解 复用模块;
开销插入模块, 用于将从开销复用解复用模块提取的属于本路的开销 数据插入到本路光通路数据单元的开销位置。
2、 如权利要求 1所述的装置, 其特征在于, 该装置还包括:
接口模块, 用于将开销处理模块检测出的开销告警信息上报给控制台, 以及将控制台的开销生成指令发送给开销处理模块。
3、 如权利要求 1或 2所述的装置, 其特征在于, 所述开销复用解复用 模块包括: 输入先入先出模块、 控制模块、 数据排队输出模块、 数据排队 输入模块、 输出 FIFO模块; 其中,
输入先入先出模块, 用于对光通路数据单元的开销数据进行先入先出 緩存, 当本路光通路数据单元的开销数据到达后, 向控制模块发送开销到 达指示信号;
控制模块, 用于釆用轮询方式读取输入先入先出模块的开销到达指示 信号, 根据开销到达指示信号读取相应的开销数据给数据排队输出模块, 还用于根据各路开销数据的到达指示信号使能相应的输出先入先出模块, 使其写有效; 数据排队输出模块, 用于根据控制模块给出的使能信号, 将相应输入 先入先出模块中的开销数据复用到开销复用数据总线, 发送给开销处理模 块;
数据排队输入模块, 用于确定开销处理模块通过开销复用数据总线输 入的各路开销数据的到达时间, 给出相应开销到达指示信号给控制模块, 并将开销数据送给各路输出先入先出模块;
输出先入先出模块, 用于根据控制模块给出的使能信号, 接收数据排 队输入模块的开销数据, 对其进行先入先出緩存, 根据开销插入模块给出 的开销读出使能, 读出本路光通路数据单元的开销数据送到开销插入模块。
4、 如权利要求 3所述的装置, 其特征在于, 所述控制模块在输入先入 先出模块的下一次开销数据到达之前从中读出相应的开销数据, 输出给数 据排队输出模块。
5、 如权利要求 3所述的装置, 其特征在于, 所述开销复用解复用模块 中输入先入先出模块和输出先入先出模块的数量相同, 所述数量的取值取 决于各路光通道数据单元开销数据的速率之和以及数据排队输出模块的数 据输出速率。
6、 如权利要求 1所述的装置, 其特征在于, 所述开销提取模块提取的 开销数据是光通路数据单元帧 4行的前 16列数据。
7、 一种权利要求 1所述装置实现光传送网开销处理的方法, 其特征在 于, 该方法包括:
A、 开销提取模块提取光通路数据单元的开销数据, 将其发送给开销复 用解复用模块进行串行处理排序, 开销复用解复用模块按照排序结果将开 销数据依次送往开销处理模块;
B、开销处理模块从接收到的开销数据中检测开销告警信息并上报给控 制台, 以及根据控制台要求生成相应的开销数据发送给开销复用解复用模 块;
c、开销复用解复用模块对从开销处理模块接收到的开销数据进行解复 用, 将解复用后的开销数据分发给各路开销插入模块, 由开销插入模块将 所述开销数据插入到本路光通路数据单元的开销位置。
8、 如权利要求 7所述的方法, 其特征在于, 所述开销复用解复用模块 进行串行处理排序, 按照排序结果将开销数据依次送往开销处理模块, 为: 对光通路数据单元的开销数据进行先入先出緩存, 当本路光通路数据 单元的开销数据到达后, 发出开销到达指示信号;
根据开销到达指示信号读取相应的开销数据, 将其复用到开销复用数 据总线, 发送给开销处理模块。
9、 如权利要求 7所述的方法, 其特征在于, 所述开销复用解复用模块 对从开销处理模块接收到的开销数据进行解复用, 将解复用后的开销数据 分发给各路开销插入模块, 为:
确定开销处理模块通过开销复用数据总线输入的各路开销数据的到达 时间, 发出开销到达指示信号;
根据各路开销数据的到达指示信号对接收到的开销数据进行先入先出 緩存, 根据开销插入模块给出的开销读出使能, 读出本路光通路数据单元 的开销数据送到开销插入模块。
10、 如权利要求 7所述的方法, 其特征在于, 所述步骤 A中, 开销提 取模块提取的开销数据是光通路数据单元帧 4行的前 16列数据。
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