CN100590997C - Spending processing method for service integration in OTN network - Google Patents

Spending processing method for service integration in OTN network Download PDF

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Publication number
CN100590997C
CN100590997C CN 200410092077 CN200410092077A CN100590997C CN 100590997 C CN100590997 C CN 100590997C CN 200410092077 CN200410092077 CN 200410092077 CN 200410092077 A CN200410092077 A CN 200410092077A CN 100590997 C CN100590997 C CN 100590997C
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opu
overhead
corresponding
otn
low
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CN 200410092077
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Chinese (zh)
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CN1770673A (en )
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张建梅
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华为技术有限公司
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Abstract

This invention relates to digital information transmission OTN network business compound expenditure process method, which comprises the following steps: a, dividing the OTN frame OPU net load area inlow speed business signal mapping and compound OTN; b, indicating OPU net load area division, dispatching and relative customer business type and the OPU net load area is divided into several same time gaps and adopting alliance sequence MFAS relative net load structure to indicate FSI each time gap to relative customer terminal and relative customer business type information; dividing the OPU customer terminal and relative customer business type and using the OPU expenditure to express relative customer business sub-block position information.

Description

law

技术领域 FIELD

本发明涉及数字信息的传输,尤其涉及一种0TN网络中业务复用的开销处理方法。 The present invention relates to the transmission of digital information, in particular, it relates to a method for overhead processing 0TN network traffic multiplexing.

背景技术 Background technique

随着话音业务和数据业务的不断增长,对传送网络的容量不断增加、传输带宽也在不断提高。 With the growing data services and voice services, the capacity of the transmission network is increasing, also increasing the transmission bandwidth. 传输技术主要经历了PDH、 SDH、 TOM等几个发展阶段,PDH技术主要采用异步复用的方式提高传输速率,SDH技术主要通过同步复用的方式提高传输速率,而W固技术主要通过波长复用方式提高线路传输带宽。 Transmission technology mainly through the phase PDH, SDH, TOM, and several development, PDH involves both asynchronous multiplexing increase the transmission rate, SDH technology mainly increase the transmission rate by multiplexing synchronization, and W by the wavelength division multiplexing technology mainly solid improved bandwidth line manner.

目前主要采用数据通过SDH处理之后再映射到WDM的网络结构,对于数据业务,需要先经过SDH的映射、复用处理之后再送给WDM系统处理,产生一个定波长的信号在光纤媒质中传输,对于语音业务,通过SDH 同步复用的方式形成高速SDH信号,再映射到WDM系统中进行波长复用处理。 Currently dominated by data and then mapped to a network structure WDM after passing through the SDH processing, for data services, the need to go through SDH mapping, and then sent to a WDM system processes after multiplexing process, generating a signal of a given wavelength transmitted optical medium, for voice, high-speed SDH signal is formed by means of the SDH synchronous multiplexing, WDM system and then mapped to the wavelength multiplexing process. 这种网络结构涉及的网络层次复杂,并且引入了大量的额外开销, 运营成本高。 Network-level network structure involves complex, and introduces a lot of overhead, high operating costs.

OTN (Optical Transport Network,光传送网)技术克服了SDH和WDM技术的缺陷,可以透明承载数据、语音及其他业务信号。 OTN (Optical Transport Network, OTN) technology overcomes the shortcomings of SDH and WDM technology to be transparent carrying data, voice and other traffic signals. OTN标准规定了三个速率等级:2.5G级别的0TU1/0DU1/0PU1 、 10G级别的0TU2/0DU2/0PU2、 40G级别的0TU3/0DU3/0PU3, ITU-T G. 709标准规定了2. 5Gbps、 10Gbps、 40Gbps的CBR信号到0TU1、 OTU2和OTU3的映射处理方式,还规定了低速OTN (包括0DU1、 0DU2)信号到高速0TN (包括0TU2、 0TU3)帧结构的复用处理方式。 OTN standard specifies three speed levels: 2.5G level 0TU1 / 0DU1 / 0PU1, 10G level 0TU2 / 0DU2 / 0PU2, 40G level 0TU3 / 0DU3 / 0PU3, ITU-T G. 709 standard specifies 2. 5Gbps, 10Gbps, 40Gbps signal to the CBR 0TU1, OTU2 and OTU3 mapping processing mode, and also provides a low speed the OTN (including 0DU1, 0DU2) signal to a high speed OTN (including 0TU2, 0TU3) multiplexing processing mode frame structure.

0TN标准尚未规定低速的CBR信号如0C-3/STM-1、 0C-12/STM-16等S0NET/SDH信号以及数据业务如何映射复用到OTN帧结构中。 0TN standards are not specify how low speed signals such as CBR 0C-3 / STM-1, 0C-12 / STM-16 and other S0NET / SDH signal is mapped and multiplexed to the data service in the OTN frame.

美国专利US 20030048813A1 (Optix Networks Inc.)规定了一种将CBR (恒定速率比特流)信号映射和复用进0TN帧的方法,该专利借鉴了低速OTN信号到高速OTN帧结构的复用处理方式,将高速OTN帧的净荷部分划分为多个时隙组,将每个时隙组分配给不同的客户,其中每个CBR客户相关的开销信息映射到OPU开销区域中。 U.S. Patent No. US 20030048813A1 (Optix Networks Inc.) stipulates a CBR (constant rate bit stream) and a signal mapping method 0TN multiplexed into frames, the patent reference signal to the OTN multiplexing low-speed handling of a high-speed OTN frame structure , the high-speed payload portion of the OTN frame into a plurality of slot group, each slot assigned to a different group of clients, wherein each of the overhead information associated CBR client mapped to OPU overhead area.

综上所述,现有技术具有如下的不足: In summary, the prior art has the following disadvantages:

1、 上述专利只是简单地描述了用OTN帧结构中的OPU (Optical Channel Payload Unit,光通道净荷单元)开销区域承载与客户映射处理相关的开销,并没有规定如何对开销进行处理,对于如何处理开销没有提供现实有效的手段。 1, the above patent describes a simply OTN frame structure OPU (Optical Channel Payload Unit, optical channel payload unit) carrying an overhead area associated with the client mapping processing overhead, and does not specify how to process the overhead, how processing overhead is no real effective means available.

2、 上述专利没有描述如何将低速CBR信号、低速ODU(Optical Channel Data Unit,光通道数据单元)业务和低速数据信号的混合业务映射到OTN中进行传输。 2, the aforementioned patent does not describe how low CBR signal, low ODU (Optical Channel Data Unit, optical channel data unit) mixed traffic service and low-speed data signals are mapped to OTN for transmission.

3、 对于OTN标准和上述专利,都局限于与OPU净荷区域带宽具有固定关系的低速CBR信号和低速ODU信号映射和复用的开销处理,缺乏针对任意带宽的低速业务信号映射和复用的开销处理。 3, the above patent and for the OTN standard, are limited to low-speed and low-speed signal CBR mapping and ODU overhead processing signals having a fixed relationship with the bandwidth of OPU payload area multiplexed, for lack of any low-bandwidth traffic signal mapping and multiplexing overhead processing.

发明内容、 SUMMARY OF THE INVENTION

本发明的目的在于提供一种OTN网络中业务复用的开销处理方法, 提供多种低速业务信号或其混合的业务信号,以及包括任意带宽的低速业务信号映射和复用到OTN帧结构时的开销处理方法,以简便且有效地卖现任意带宽的低速业务信号映射和复用开销处理。 Object of the present invention to provide a method of processing overhead traffic in the OTN multiplexing, traffic signals to provide low bit rate service signals are mixed, or more, and include any low-bandwidth traffic signal mapping and multiplexing frame structure when used OTN overhead processing method, a low speed traffic signal mapping sell now simply and effectively arbitrary bandwidth and multiplex overhead processing. 本发明所采用的0TN网络中业务复用的开销处理方法采用如下步 Overhead approach used in the present invention, the network service multiplex 0TN adopts the following steps

骤: Step:

A、 将低速业务信号映射和复用到0TN时,划分0TN帧的0PU净荷区域, A, low-speed mapping and traffic signals when multiplexed OTN, OTN payload area divided 0PU frame,

所述0PU净荷区域被划分为若干大小相同的时隙; 0PU the payload area is divided into a plurality of identical size slots;

B、 在OPU开销区域中,采用复帧对准序列MFAS所对应的净荷结构指示PSI表示将每个时隙分配给对应客户端口和相应客户业务类型的信息。 B, in the OPU overhead area, the frame alignment using a complex structure payload MFAS sequence corresponding PSI represents indicated each time slot allocated to the port information corresponding to the customer and service type of the corresponding client.

所述的步骤A中,所述的各时隙在OPU净荷区域中按序号顺序排列、 固定位于OPU净荷区域中; Said step A, said each time slot are arranged in numerical order OPU payload area, located in a fixed OPU payload area;

所述的步骤A中,所述的各时隙在OPU净荷区域中采用TDM时分复用的方式,按序号固定位于OPU净荷区域中; Said step A, said each time slot in the TDM time division multiplexing manner OPU payload area, located in a fixed sequential order OPU payload area;

所述的步骤B中,将所述的净荷结构指示PSI字节划分为两段,分别表示相关时隙所对应的客户业务类型和所分配的客户端口; Said step B, the indication of the PSI byte of the payload structure is divided into two sections, respectively, corresponding to the relevant slot and a customer service type assigned client port;

采用复帧对准序列MFAS的取值指定对应的时隙,以指示对于该时隙所对应的客户业务进行速率调整; Using the aligned sequences MFAS multiframe time slot corresponding to the specified values, indicating the rate adjustment for the time slot corresponding to the customer service;

采用对净荷结构指示PSI循环赋值的方式,指示对某个特定的时隙所对应的客户业务进行速率调整。 Payload using the indication manner PSI cyclic structure assignment, an indication of a particular time slot corresponding to the client service for rate adjustment.

所述的步骤A中,划分OTN帧的OPU净荷区域时,OPU净荷区域被划分为若干子块;所述的步骤B中,在OPU开销区域中,采用复帧对准序列MFAS所对应的净荷结构指示PSI表示客户端口和相应客户业务类型的对应信息,并利用OPU开销区域的开销字节表示相应客户业务在OPU净荷区域的子块位置信息; Said step A, when dividing the OPU payload area of ​​the OTN frame, OPU payload area is divided into several sub-blocks; said step B, the OPU overhead area, the frame alignment using a complex sequence corresponding to MFAS PSI represents payload structure indicates client port and the corresponding client information corresponding to the service type, and using the overhead area OPU overhead bytes corresponding client information service sub-block position of OPU payload area;

所述的客户业务在OPU净荷区域的子块位置信息通过OPU开销区域的三个保留字予以指示; The client service sub-block location information OPU payload area reserved word be indicated by three OPU overhead region;

采用对净荷结构指示PSI循环赋值的方式,表示某个特定的客户业务在0PU净荷区域中的子块位置; . PSI indicative of payload structure using cyclic assignments of the sub-block represents the location of a particular customer service area in the payload 0PU;.

采用对所述的净荷结构指示PSI循环赋值的方式,表示对某个特定的客户业务进行速率调整; PSI indicative of payload structure using the cyclic assignments of the representation of a particular customer service for rate adjustment;

采用复帧对准序列MFAS的取值指定对应的客户业务,表示对该客户业务进行速率调整; Using multiframe alignment of sequences corresponding to the specified values ​​MFAS customer service, the representation of the customer service rate adjustment;

所述的低速业务信号为低速CBR信号、低速0DU信号、低速数据信 The low-speed signal is low CBR traffic signal, the low-speed signal 0DU, low-speed data channel

号,或其中的多种信号的混合; Number, or wherein a plurality of mixed signals;

对于所述的低速CBR信号或低速0DU信号,需要判断是否采用异步映射,由0PU开销区域中的调整控制字节JC(JustificationControl)、 负调整机会字节NJO (Negative Justification Opportunity),正调整机会字节PJO (Positive Justification Opportunity)进行相应的调整控制。 For CBR signal according to the low-speed or low-speed signal 0DU needs to judge whether to adopt the asynchronous mapping, the region controlled by adjusting 0PU overhead bytes JC (JustificationControl), a negative justification opportunity bytes of NJO (Negative Justification Opportunity), a positive justification opportunity word section PJO (Positive Justification Opportunity) corresponding adjustment control.

本发明的有益效果为:在本发明中,低速业务信号映射和复用到OTN 时,划分OTN帧的OPU净荷区域为时隙或子块,在OPU开销区域中指示OPU净荷区域的划分、分配和相关的客户业务类型信息。 Advantageous effects of the present invention is: In the present invention, the low-speed traffic signal is mapped and multiplexed OTN, divided OPU payload area of ​​the OTN frame into time slots or sub-blocks, indicating OPU payload area is divided in the region of the OPU OH distribution and related customer service type information.

对于与OPU净荷区域带宽具有固定关系的低速业务信号映射和复用到OTN帧的开销处理,采用净荷结构指示PSI表示每个时隙分配给对应客户端口和相应客户业务类型的信息,通过将净荷结构指示PSI字节划分为两段,分别表示相关时隙所对应的客户业务类型和所分配的客户端口,对于处理开销提供了简便、有效的手段.。 For low-speed traffic signal mapping overhead processing and have a fixed relationship with the bandwidth of OPU payload area of ​​the OTN frame is multiplexed, indicating the payload structure using PSI represents each time slot allocated to the corresponding client port and service type information of the corresponding client, by PSI byte indicates the payload structure is divided into two sections, respectively, corresponding to the relevant slot and a customer service type client port allocated for processing overhead to provide a simple, effective means ..

对于任意带宽的低速业务信号映射和复用到OTN帧的开销处理,采用净荷结构指示PSI表示客户端口和相应客户业务类型的对应信息,并利用OPU开销区域的三个保留字,表示相应客户业务在OPU净荷区域的子块位置信息,处理方法简单,可操作性强,这样,就不需要固定的净200410092077.2 荷区域划分方式,0PU净荷区域与客户端口的对应关系由0PU开销承载。 For any low bandwidth overhead and traffic signal mapping processing multiplexed OTN frame payload structure using PSI indication indicates client port and service type corresponding to the corresponding client information, and use three OPU overhead area of ​​reserved words representing respective client information service sub-block position of OPU payload area, the processing method is simple, easy to operate, so there is no need 200410092077.2 fixed net charge region division manner, a correspondence relationship with the client port region 0PU payload carried by 0PU overhead.

在本发明中,可以将ora净荷区域的划分情况(这种划分可以针对 In the present invention, the case may be divided ora payload area (this division may be directed to

固定带宽的固定的时隙划分;也可以按照客户业务端口、对不同带宽的客户业务分配不同的带宽,用0PU净荷区域的开始、结束位置表示)、 Fixed time slots dividing a fixed bandwidth; may be in accordance with customer service ports of different bandwidths to different customer business allocate bandwidth using the start 0PU payload area, it represents the end position),

不同的区域划分到客户业务端口的分配情况、以及不同客户业务类型信 Divided into different areas of the customer service port assignments, as well as different types of customer traffic channel

息用OPU开销区域中指示,根据OPU开销指示,可以获取OPU净荷区域 OPU overhead information region indicated with, according OPU overhead indication may be obtained OPU payload area

包含的时隙个数、接入的客户业务端口个数、不同端口的客户业务类型 In number of slots included in the access service client port number, client service ports of different types

信息、客户业务在OPU净荷区域中的位置信息,根据这些信息来提取客户业务信号,对于低速CBR或低速ODU业务,还可以根据调整控制开销指示对客户业务进行相应的调整操作,接收端可以利用0PU开销区域的 Information, customer service location information of OPU payload area according to the extracted information to the customer service signal, for low-speed or low CBR traffic ODU, business customers can also be adjusted according to the adjustment operation indication control overhead receiver can 0PU overhead area of ​​use

相应开销信息,直接从净荷区域中提取属于每个客户端口的信号,便于信号恢复,不需要在接收端进行配置。 Respective overhead information is extracted from the payload region belonging to each client signal ports, to facilitate signal recovery, it does not need to be arranged at the receiving end.

总之,本发明提供了多种低速业务信号或其混合的业务信号,以及 In summary, the present invention provides a traffic signal or a plurality of low bit rate service signals are mixed, and

包括任意带宽的低速业务信号映射和复用到OTN帧结构时的开销处理方法,其实现方法简便、有效、操作性强。 Low overhead and traffic signal mapping method when multiplexed OTN frame structure comprises any bandwidth, which implements the method is simple, effective and workable.

附图说明 BRIEF DESCRIPTION

图1为OTN帧结构示意图;图2为0PU开销结构示意图; Figure 1 is a schematic view of an OTN frame; FIG. 2 is a schematic 0PU overhead structure;

图3为调整开销字节对应表;图4为净荷结构指示PSI字节划分示意图;图5为0PU1时隙划分及相应客户端口的分配情况示意图;图6为0PU1时隙划分及相应客户端口的分配情况示意图;图7为时隙到客户端口的分配及相应的0PU开销的赋值示意图;图8为采用0PU开销区域的三个保留字指示客户业务的起始列和结束示意图;图9为净荷结构指示PSI字节及保留字分配示意图; FIG 3 is a correspondence table to adjust the overhead byte; FIG. 4 PSI byte indicates division schematic payload structure; FIG. 5 is a schematic 0PU1 slot allocation and distribution of the corresponding customer port; FIG. 6 is a slot and the corresponding division 0PU1 client port the schematic distribution; FIG. 7 is a schematic view of the client dispensing port assigned time slots and corresponding to the overhead 0PU; FIG. 8 is a three overhead area 0PU using a reserved word indicating the starting column and customer traffic schematic end; FIG. 9 is a PSI byte indicates payload structure and a schematic view of dispensing reserved word;

图10为2个STM-4加上1个GbE映射复用到0PU1中的净荷和开销分配示意图。 FIG 10 is a two STM-4 plus 1 GbE 0PU1 mapping of payload and overhead distribution schematic multiplexed.

具体实施方式 detailed description

下面根据附图和实施例对本发明作进一步详细说明:OTN建议规定了三种不同速率的帧结构,分别为2.5G速率级别的0TU1/0DU1/0PU1、 10G速率级别的0TU2/0DU2/0PU2、 40G速率级别的0TU3/0DU3/0PU3。 The following drawings and embodiments of the present invention as described in further detail: OTN recommendation specifies the frame structure of three different rates, respectively, 2.5G rate level 0TU1 / 0DU1 / 0PU1, 10G rate level 0TU2 / 0DU2 / 0PU2, 40G rate level 0TU3 / 0DU3 / 0PU3. 对于每种速率的OTN帧,其帧结构大小完全相同,传输速率存在差异,例如对于0TU1/0DU1/0PU1帧,帧周期为48us左右,而OTU2/0DU2/0PU2的帧周期为12us左右,0TU3/0DU3/0PU3的帧周期为3us左右。 For each OTN frame rate, the frame structure identical size, presence of different rates, for example 0TU1 / 0DU1 / 0PU1 frame, the frame period is about 48us, and the frame period OTU2 / 0DU2 / 0PU2 is about 12us, 0TU3 / frame period 0DU3 / 0PU3 is about 3us.

如图1所示,G. 709建议规定了OTN帧的结构为4行、4080列的块状字节结构,其中前面16列为OTN的开销区域、17〜3824列之间为净荷区域、3825〜4080列之间为前向纠错FEC(Forward Error Correction)开销区域。 As shown, G. 709 recommends a predetermined structure of an OTN frame is four rows, of 4080 byte block configuration, wherein as the overhead area in front of the OTN 16, the region between the payload is 17~3824 columns, a forward error correction FEC (forward Error correction) overhead area between 3825~4080 column.

0PU开销区域如图2所示,第1〜3行的第16列为调整控制字节JC,第4行第16列为负调整机会字节NJO,第4行第17列为正调整机会字节PJO, JC和NJO、 PJO组成调整控制开销,用于适配客户信号和OTN帧信号之间的频率偏差。 0PU overhead area 2, ~ 3 of the first line 16 to adjust the control byte as JC, in the fourth row 16 as a negative justification opportunity NJO byte, the fourth row 17 as positive justification opportunity word section PJO, JC and NJO, PJO composition adjustment control overhead for frequency deviation between the client signal and the adaptation signal OTN frame. 第4行第15列为OPU净荷结构指示PSI字节,为0PU帧结构中映射的客户信息相关的开销。 4, line 15, as PSI byte indicates OPU payload structure, a frame structure for the customer 0PU mapping information related to the overhead.

如图2所示,OPU开销区域包含客户信号映射相关的开销:.净荷结构指示PSI, PSI为256字节的复帧结构,其中每个字节的含义由复帧对准序列MFAS对应的值来定义,复帧对准序列MFAS为0 (十进制)对应于PT (净荷类型),G. 709标准对不同客户信号映射到0PU净荷区域的情况分别进行了规定,如表1的净荷类型代码表所示。 As shown, the OPU overhead area comprising the second client signal mapping overhead associated: payload structure indicated PSI, PSI 256 bytes multiframe structure in which the meaning of each byte alignment of the multiframe sequence corresponding to MFAS defined value, multiplex frame alignment sequence MFAS is 0 (decimal) corresponding to the PT (payload type), G. 709 standard signal to a mapping for different clients if the payload has been predetermined region 0PU respectively, as shown in table 1, the net Dutch type code table. 例如,对于CBR信号的异步映射情况(即Asynchronous CBR),该区域设置为0x02;PSI[1]〜PSI[255]为映射和级连特定的开销。 For example, for the case of asynchronous mapping (i.e., Asynchronous CBR) CBR signals, the region is set to 0x02; PSI [1] ~PSI [255] and cascaded to map specific overhead. 对于G.709规定的低速0DUj到高速0DUk (j〈k)复用的情况,复帧对准序列MFAS为1对应的区域为保留字节;复帧对准序列MFAS为2〜17对应的区域为复用结构指示MSI, MSI区域包含低速0DUj支路信号在高速0PUk信号中的复用结构信息,根据MSI指示,可以确定低速支路信号在OPU净荷区域中的位置。 For G.709 predetermined low speed to high speed 0DUj 0DUk (j <k) where multiplexed multiframe MFAS sequence is aligned with a region corresponding to the reserved bytes; MFAS multiplex frame alignment sequence region corresponding to 2~17 is a complex structure for indicating MSI, MSI multiplex configuration information region containing a low-speed tributary signals 0DUj 0PUk high-speed signal, indicative of MSI according to, low-speed tributary signal may be determined at the position of OPU payload area. 如图3所示,OPU开销区域还包含用于异步映射的调整开销JC、NJ0、 PJ0,其中JC为调整控制字节,起作用的是JC字节的比特7、 8,NJO为负调整机会字节,如果客户信号速率大于OPU帧速率,则在该字节区域填充数据字节,PJ0为正调整机会字节,当客户信号速率小于0PU帧速率,就在该区域填充调整字节;当客户信号速率等于OPU帧速率时,将不进行调整操作,即NJO字节为填充字节,PJO字节为数据字节。 3, the OPU overhead area further comprises adjusting JC overhead for asynchronous mapping, NJ0, PJ0, wherein to adjust the JC byte control, a function JC byte bit 7, 8, NJO is a negative justification opportunity byte, if the client signal rate is greater than OPU frame rate, then the bytes in the byte of stuffing data region, PJ0 positive justification opportunity bytes of the client signal rate is less than when the frame rate 0PU, justification bytes to fill in the region; when when the client signal rate is equal to the OPU frame rate, the adjustment operation is not performed, i.e., NJO byte stuffing bytes, the PJO byte is a data byte. 在客户信号到OPU帧的映射方向,按照这个规则产生JC、 NJ0、 PJ0信息,而从0PU帧到客户信号的解映射方向,就根据接收到的JC字节的比特7、8的信息,采用3:2多数判决规则,从NJ0和PJ0中提取相应的信息。 In the client signal into OPU frame mapping directions, resulting JC, NJ0, PJ0 information in accordance with this rule, from a direction 0PU frame demapping the client signals, according to information received JC byte bits 7-8, using 3: 2 majority decision rule, the corresponding information extracted from the NJ0 and PJ0.

<table>table see original document page 11</column></row> <table><table>table see original document page 12</column></row> <table> <Table> table see original document page 11 </ column> </ row> <table> <table> table see original document page 12 </ column> </ row> <table>

本发明使用OPU开销区域的PSI信息,指示OPU净荷区域的划分、分配和相关的客户业务类型信息。 The present invention uses the PSI OPU overhead area information indicating OPU payload area is divided, distribution and customer-related service type information. 本发明采用现有G. 709的PSI字节分配的原则,利用PT (即PSI[0]位置)为二进制1000xxxx、即十六进制值0x80〜0x8F区段的取值,指示OPUk净荷区域承载多个任意低速业务信号。 The present invention uses the principle of the prior G. PSI 709 bytes allocated by PT (i.e., PSI [0] position) to binary 1000xxxx, i.e. the value of the hexadecimal value 0x80~0x8F section, indicating OPUk payload area any signal carrying a plurality of low-speed service. 可以将PT规定为0x80〜0x8F之间的任一个固定的值(假定为0x80),表示OPU净荷区域承载了多个低速业务信号。 PT may be defined as any 0x80~0x8F between a fixed value (assumed to be 0x80), represents OPU payload area carries a plurality of low-speed traffic signals.

根据复用的低速客户业务情况,针对特定的低速客户业务,客户业务之间的带宽之间具有固定关系,并且与OPU净荷区域带宽具有一定关联,如某种意义上的倍数关系,采用固定的时隙划分方式,实现低速客户业务到OPU净荷区域的复用。 The case of low rate client service multiplexing, for a fixed relationship between a particular bandwidth between the low-speed business customers, the customer service, and the OPU payload area associated with a certain bandwidth, such as a sense multiple relationship, a fixed the slot allocation method to achieve the multiplexing low rate client traffic to the payload area of ​​the OPU. ITU-T G.709也采用这种固定吋隙划分的分配方式,实现低速0DU1/0DU2到0PU2/0PU3的复用,尽管0DU1/0DU2的速率不是严格的倍数关系,并且他们的速率与0PU2/0PU3的净荷区域带宽也不是严格的倍数关系,但这种处理允许单个低速业务跨多个高速OPU信号。 ITU-T G.709 also be employed such fixed allocation of the divided inch gap, low speed multiplexing 0DU1 / 0DU2 to 0PU2 / 0PU3, although the rate 0DU1 / 0DU2 multiple relationship is not critical, and their rate 0PU2 / Bandwidth 0PU3 payload area is not strictly multiple relationship, but this process allows a single low traffic OPU across multiple high-speed signals. 这种带宽分配方案适合于低速CBR业务/低速ODU业务复用到高速OPU 净荷区域的情况。 This bandwidth allocation scheme is suitable for low-speed service CBR / ODU service low-speed multiplexed into the payload area of ​​the OPU. 例如将CBR155/CBR622/CBR2. 5G/CBR10G/0DU1/0DU2的一种或多种混合业务复用到高阶OPU净荷区域。 For example CBR155 / CBR622 / CBR2. 5G / CBR10G / 0DU1 / 0DU2 mixing one or more services are multiplexed high-order OPU payload area. 这时,将OTN帧的OPU净荷区域时划分为若干大小相同的时隙,在OPU开销区域中,采用复帧对准序列MFAS所对应的PSI信息表示每个时隙分配给对应客户端口和相应客户业务类型的信息。 In this case, the OPU payload area of ​​the OTN frame is divided into several time slots of the same size, in the OPU overhead area, the frame alignment using PSI information multiplexed MFAS sequence corresponding to each time slot allocated to the corresponding representation client port and the appropriate customer service type of information.

如图4所示,用N表示OPU净荷区域中的最大时隙个数,i表示某一个时隙,1《i《N; k表示客户端口个数,0《k《N。 4, the maximum number of time slots represented by N OPU payload area, i denotes a particular time slot, 1 "i" N; k denotes the number of client ports, 0 "k" N.

PSI[O]的值表示OPU净荷区域承载了多个低速业务,设置为0x80〜0x8F之间的一个值。 Value PSI [O] represents the OPU payload area carrying a plurality of low-speed service, set to a value between 0x80~0x8F. PSI[1]表示0PU净荷区域的时隙个数,取值为N。 PSI [1] represents the number of slots 0PU payload region, the value is N. PS工[i+l] (1《i《N)表示第i个时隙分配给了哪个客户端口、以及该客户业务类型。 Workers PS [i + l] (1 "i" N) denotes the i th time slot is assigned to which port the client, and the client service type. PSI[i+l]表示客户业务类型和该客户业务占用的OPU净荷区域的时隙信息。 PSI [i + l] denotes the time slot information of the client and the client service type traffic occupancy OPU payload area. 可以这样分配,低4-bit表示第i个时隙分配给了哪一个客户端口,该区域的值表示客户端口序号,PSI[i+l]的高4-bit为客户业务类型区域,不同客户业务对应不同的值。 Can be so allocated, the low 4-bit denotes the i th time slot which is assigned to the client port, the value of the region indicates client port number, PSI [i + l] is a 4-bit high customer service type regions, different customers values ​​corresponding to different service. 如图4所示, PSI [i+l]高4-bit的客户业务类型区域与相应的低4-bit客户端口对应如下: 4, PSI [i + l] High 4-bit type of client service areas corresponding to the low 4-bit client port corresponds to the following:

0000 0DU1 0000: 客户端口1 0000 0DU1 0000: client port 1

0001 0DU2 0001: 客户端口2 0001 0DU2 0001: client port 2

0010 0C-3/STM-1 0010: 客户端口3 0010 0C-3 / STM-1 0010: client port 3

0011 OC-12/STM-4 0011: 客户端口4 0011 OC-12 / STM-4 0011: client port 4

0100 OC-48/STM-16 0100 OC-48 / STM-16

0101 OC—192/STM-64 … 0101 OC-192 / STM-64 ...

1111:客户端口16 1111: client port 16

Other: reserved Other: reserved

有了这两部分信息,就可以判断该时隙被分配给哪个客户端口,在接收端根据这个信息将从OPU净荷区域提取的信息送给不同的客户业务端口处理模块,就能保证正确的恢复客户业务信号。 With these two pieces of information, it can be determined that the time slot which is assigned to the client port, at the receiving end to the different client service ports according to the information processing module from the OPU payload information region extraction can ensure proper customer service signal recovery. 同时,还可以获取到该客户端口所接入的客户业务类型。 You can also obtain the service type to the client the client access port.

也可以用PSI[,j+i+l]与PSI[i+l]定义相同的循环赋值的方式, 即PSI[阔+i+l]与PSI[i+l]取相同的值。 It can also be used PSI [, j + i + l] and PSI [i + l] the same manner as the assignment cycle definition, i.e., the PSI [width + i + l] and PSI [i + l] the same value. 其中,1《i《N, 0《j《 [254/N]-1 ( [254/N]是N除254的整数部分),j表示时隙分配的最大循环次数。 Wherein, 1 "i" N, 0 "j" [254 / N] -1 ([254 / N] N is an integer division portion 254), j represents the maximum number of cycles slot allocation. 例如,若N二16、则i二l〜16、 j二0〜14。 For example, if N = 16, then i = l~16, j two 0~14. —则将复帧中第2个0TN 帧、第18个0TN帧、第32个0TN帧、…、第226个OTN帧的PSI字节位置都分配给第1个时隙对应的客户端口和相应客户业务类型;将复帧中第17个OTN帧、第33个OTN帧、…、第241个OTN帧的PSI字节位置都分配给第16个时隙对应的客户端口和相应客户业务类型。 - then the second multiframe 0TN frame, the first frame 18 0TN, the first frame 32 0TN, ..., 226 of the PSI byte position of the OTN frame is allocated to a time slot corresponding to the first port and the corresponding customer customer service type; the multiframe of 17 frames OTN, OTN frames of 33, ..., 241 of the PSI byte position of the OTN frame is allocated to the first client port 16 and the corresponding client service type corresponding to the slot. 若PSI[i + l]的低4-bit取值为k,表示将第i个时隙分配给第(k+l)个客户端口,并且PSI [i + l]的高4-bit取值表示第k个客户端口的业务类型; PSI[,j + i + l]的取值同样包含相同的时隙到客户端口的分配情况和相应的客户业务类型信息。 If the PSI [i + l] lower 4-bit value of k, denotes the i-th time slot allocated to the first (k + l) th client port, and PSI [i + l] higher 4-bit value It represents the k-th service type client port; PSI [, j + i + l] contains the value of the same customer to the same time slot and port assignments corresponding customer service type information.

现举一实际应用例如下:对于3个STM-4加上4个STM-1的客户 For a practical use now is as follows: For three STM-4 4 STM-1 plus customer

业务信号复用到0PU1帧结构中的情况如下: 客户端口排序为: 0PU1 service signal multiplexed into a frame structure as follows: client port order:

客户端口ttl:STM-4ftl; 客户端口船:STM-1弁1; 客户端口ft3:STM-1#2; 客户端口糾:STM-4#2; 客户端口#5: STM-1 #3; 客户端口#6: STM-4#3; 客户端口tt7:STM-1#4。 Client port ttl: STM-4ftl; client port ship: STM-1 Benten 1; client port ft3: STM-1 # 2; client port correction: STM-4 # 2; client port # 5: STM-1 # 3; customer port # 6: STM-4 # 3; client port tt7: STM-1 # 4.

这种情况下,由于客户业务信号的带宽具有倍数关系,即STM-4客户业务带宽是STM-1客户业务带宽的4倍,因此可以将0PU1净荷部分划分成16个时隙(对应于时隙#1〜时隙#16),每个时隙具有STM-1的 In this case, since the bandwidth of the customer service signal having multiple relationship, i.e., customer service bandwidth STM-4 STM-1 4 times a client's service bandwidth, thus 0PU1 payload portion may be divided into 16 time slots (the time corresponding to # 1 ~ # 16 slot gap), each slot having the STM-1

如图5所示,各时隙在OPU净荷区域中按序号顺序排列、固定位于OPU净荷区域中。 5, each of the slots are arranged in numerical order OPU payload area, located in a fixed OPU payload area.

如图6所示,各时隙在OPU净荷区域中采用TDM时分复用的方式, 按序号固定位于OPU净荷区域中。 6, each slot in the TDM time division multiplexing manner OPU payload area, located in a fixed sequential order OPU payload area.

如图5和图6所示,给出的时隙到客户端口的分配关系为: 时隙#1〜时隙#4 分配给客户端口#1的STM-4ttl; 5 and 6, the time slot given to the customer port assignment relationship as: slots slot # 1 ~ # 4 to the client port of the STM-4ttl # 1;

分配给客户端口#2的STM-分配给客户端口#3的STM-1#2; 分配给客户端口糾的STM-4#2; 分配给客户端口tt5的STM-1#3; # 2 allocated to the client port assigned to the client STM- port # 3 of the STM-1 # 2; client port assigned to the correction of the STM-4 # 2; tt5 port assigned to the customer's STM-1 # 3;

时隙恥 Slot shame

时隙#7〜时隙#10 时隙#11 July to slot Slot # # 11 # 10 slot

时隙#12〜时隙#15分配给客户端口#6的STM-賴3;时隙#16 分配给客户端口ft7的STM-1#4。 Slot Slot # 12~ # 15 # allocated to the client port 36 of the STM-Lai; slot # 16 is allocated to the client port ft7 STM-1 # 4.

这样,如图7所示: Thus, shown in Figure 7:

PSI[2]〜PSI[5]对应的时隙都分配给了客户端口tfl的STM-4业务, 则PSI[2]〜PSI[5]值为0011 0000; PSI[6]对应的时隙分配给了客户端口ft2的STM-1业务, 则PSI[6]值为0010 0001; PSI [2] ~PSI [5] corresponding to time slots are allocated to the customer's STM-4 port tfl service, the PSI [2] ~PSI [5] is 0011 0000; PSI [6] corresponding to slot allocation ft2 the client port to the STM-1 service, the PSI [6] is 00100001;

PSI[7]对应的时隙分配给了客户端口们的STM-1业务, 则PSI[7]值为0010 0010; PSI [7] assigned to the time slot corresponding to the customer's STM-1 port service, the PSI [7] is 00100010;

PSI [8]〜PSI [11]对应的时隙都分配给客户端口M的STM-4业务, 则PSI[8]〜PS工[11]值为0011 0011; PSI[12]对应的时隙分配给了客户端口船的STM-1业务, 则PSI[12]值为0010 0100; PSI [8] ~PSI [11] are assigned to the time slot corresponding to the port M of the customer service STM-4, the PSI [8] ~PS workers [11] is 0011 0011; PSI [12] corresponding to slot allocation client port to the STM-1 service ship, the PSI [12] is 00100100;

PSI[13]〜PSI[16]对应的时隙都分配给客户端口湘的STM-4业务, 则PSI[13]〜PSI[16]值为0011 0101; PSI[17]对应的时隙分配给了客户端口tt7的STM-1业务, 则PSI[17]值为0010 0110。 PSI [13] ~PSI [16] corresponding to the time slot assigned to the customer Xiang STM-4 port service, the PSI [13] ~PSI [16] is 0011 0101; PSI [17] are assigned to the corresponding time slot tt7 the customer port STM-1 service, the PSI [17] is 00100110.

如果对应的客户业务类型为低速CBR信号或低速ODU信号,就需要判断是否采用异步映射进行速率调整,这时,由OPU开销区域中的调整控制字节JC、负调整机会字节NJO、正调整机会字节PJO进行相应的调整控制。 If a customer service type corresponding to a low speed or low-speed signal CBR ODU signal, determines whether it is necessary to use asynchronous mapping rate adjustment, then, by the OPU overhead bytes of the control region is adjusted JC, NJO byte of Negative Justification Opportunity, positive justification opportunity PJO byte corresponding adjustment control. 调整控制采用G. 709标准规定方法,参考图3。 G. 709 standard is controlled by adjusting a predetermined method, with reference to FIG. 这里只描述如何用开销表示对哪一个时隙进行调整控制处理。 Here, only what is represented by a slot which overhead control process is adjusted.

对于需要对接入的客户业务进行速率调整的情况,可以用复帧对准序列MFAS的取值指定对应的时隙,以指示对该时隙所对应的客户业务进行速率调整。 In the case of the need for access to the client service rate adjustment can be specified with a value corresponding to the time slot multiplex frame alignment MFAS sequence to indicate the rate adjustment for time slot corresponding to the client service. 例如对于4个时隙划分的情况,可以使用MFAS的bit[78]共2-bit表示对时隙ttl〜时隙糾的其中一个时隙对应的客户业务进行调整;对于16个时隙划分的情况,就使用MFAS的bit[5678]共4-bit表示对时隙ftl〜时隙ftl6的其中一个时隙对应的客户业务进行调整,依此类推。 For example, the case of four time slots divided, may be used to MFAS bit [78] represents the total of 2-bit time slot where a correctable ttl~ slot corresponding to the slot to adjust the customer service; divided to 16 slots case, the use of the MFAS bit [5678] 4-bit representation of common slot ftl~ ftl6 slot corresponding to the slot where a customer service adjustment, and so on. 也可以采用对净荷结构指示PSI循环赋值的方式,用于表示对某个特定的时隙所对应的客户业务进行速率调整。 It may be used for indicating a payload structure PSI cyclic assignments of a representation of a particular time slot corresponding to the client service for rate adjustment. 参考上述图4及有关说明, 用PSI[附j+i + l]循环赋值的方式,指示对某个特定的时隙对应客户业务 4 and related description above with reference to FIG, with the PSI [attaching j + i + l] cyclic manner assignment, indicate that the corresponding client service for a particular time slot

进行调整处理,则复帧中第(,j+i+l)个OTN帧就可以对第i个时隙分配的客户业务进行调整操作。 Adjustment process, the complex of (, j + i + l) th frame can be adjusted OTN operation on the i-th slot assignment customer traffic frame. 例如存在4个客户业务、16个时隙划分的情况,N=16、 i二l〜16、 j=0〜14,则复帧中第2个0TN帧、第18个OTN 帧、第34个0TN帧、…、第226个0TN帧可以对第1个时隙对应的客户业务进行调整操作,采用JC和NJO、 PJO等调整控制开销进行处理; 而复帧中第17个0TN帧、第33个0TN帧、…、第241个0TN帧可以对第16个时隙对应的客户业务进行调整操作,采用JC和NJO、 PJO等调整控制开销进行处理。 For example there are four customer business, where 16 slots divided, N = 16, i two l~16, j = 0~14, then the second multiframe 0TN frame, the OTN frame 18, 34 of 0TN frame, ..., 226 0TN first frame may be the first time slot corresponding to a customer service adjustment operation using JC and NJO, PJO overhead adjustment control processing and the like; undone 0TN frame of frame 17, 33 0TN a frame, ..., the frame 241 may be adjusted 0TN operation corresponding to the slot 16 of the customer service, using the JC and NJO, PJO overhead adjustment control processing and the like.

在上述实际应用例中,适合于OPU净荷区域的时隙划分固定的情况,即按照一定的规则对OPU净荷区域进行划分,分别标号为时隙共l、 时隙#2、…、时隙,,各时隙处于OPU净荷区域中的固定位置,这时, 只要获得时隙的序号,就可以确定相应的客户业务占据了OTN帧结构中的哪一部分净荷区域,反映了本发明对于带宽之间具有固定关系并且与OPU净荷区域带宽也具有一定关联的(混和)低速业务信号,如,低速CBR信号、低速ODU信号、低速数据信号或其中的多种信号的混合等, 所采用的OPU净荷区域的划分、分配及OPU开销处理方法。 In the practical embodiment, is adapted to OPU payload area is divided slots is fixed, i.e. in accordance with certain rules of OPU payload area is divided, were respectively designated L slots, slot # 2, ..., when ,, each slot gap OPU payload area is in a fixed position, then, as long as a number of slots, it can determine the corresponding client service which occupies part of the payload area of ​​the OTN frame, reflecting the present invention (mixed) for low-speed traffic signal and having a fixed relationship between the bandwidth and the OPU payload area associated with a certain bandwidth, such as, low CBR signal, low ODU signal, low speed data signal or a mixed signal in which a plurality of the like, the OPU payload area is divided employed, OPU overhead distribution and treatment.

对于任意带宽的客户业务信号混合复用到OTN帧结构的情况时,划分OTN帧的OPU净荷区域为若干子块,每个子块占用一定数量的OPU净荷列,在OPU开销区域中,采用复帧对准序列MFAS所对应的净荷结构指示PSI表示客户端口和相应客户业务类型的对应信息,并利用OPU开销区域的三个保留字RES1、 RES2和RES3表示相应客户业务在OPU净荷区域的子块位置信息,如图2所示的第15列中的第一行、第二行和第三行的三个保留字RES1、 RES2和RES3,这样,客户业务在0PU净荷区 For mixing any bandwidth signal multiplexed into the customer service in the OTN frame, the division of OPU payload area of ​​the OTN frame into sub-blocks, each sub-block OPU payload occupies a certain number of columns in the OPU overhead area, the use of MFAS multiframe alignment of sequences corresponding to the payload structure represented PSI indicates client port and service type corresponding to the corresponding client information, and with three reserved words of the RES1 OPU overhead area, RES2 and RES3 indicate corresponding customer traffic OPU payload area in a sub block position information, a first line 15 shown in FIG. 2, three RES1 reserved words of the second and third rows, RES2 and RES3, so, the customer service in the payload area 0PU

域的位置可以精确到列,OPU净荷区域一共有3080列,如图8所示,用 Location field can be precisely to the column, a total of the OPU payload area 3080, shown in Figure 8, with

12-bit长度就可以表示,因此,这三个字节可以表示该客户业务占用了 12-bit length can be expressed, and therefore, three bytes may indicate that the client services occupy

OPU净荷区域的开始列和结束列。 Start and end column column OPU payload area.

有关开销可以采用如下方式进行分配:MFAS值为0的PSI[O]即PT For overhead can be allocated in the following way: MFAS is 0 PSI [O] i.e. PT

仍然表示OPU净荷区域中包含了多个低速业务信号,取值为0x80〜0x8F Still represents OPU payload area contains a plurality of low-speed traffic signals, value of 0x80~0x8F

中的一个值;用MFAS值为1的0TN帧的0PU开销PSI[1]表示0PU净荷 One value; 0TN frame with the MFAS is 1 overhead 0PU the PSI [1] indicates the payload 0PU

区域包含的客户端口数N (最大支持254个客户业务信号的接入),如图 Area contains client port number N (the maximum service to 254 customers access signal), FIG.

9所示,N表示客户端口数,用MFAS值为(i+l)对应的PSI[i+l]( Ki 9, N denotes the number of client ports, with MFAS value (i + l) corresponding to the PSI [i + l] (Ki

《N)表示第i个客户端口对应的客户业务类型信息,有关信息设定如下: "N) denotes the i th client port information corresponding to the type of customer service, information set as follows:

PSI[2] 0000 OOOO:ODUl PSI [2] 0000 OOOO: ODUl

PS工[3] 0000 0001:0DU2 PS workers [3] 0000 0001: 0DU2

… 0000 0010:0C-3/STM-1 ... 0000 0010: 0C-3 / STM-1

0000 0011:0C-12/STM-4 0000 0011: 0C-12 / STM-4

0000 0100:0C-48/STM-16 0000 0100: 0C-48 / STM-16

0000 0101:OC-192/STM-64 0000 0101: OC-192 / STM-64

0000 1000:GbE 0000 1000: GbE

0000 1001:FC100 0000 1001: FC100

此时0PU开销区域的三个保留字RES1、 RES2和RES3指示该客户业务占用0PU净荷区域的子块位置。 At this time, three reserved words of the RES1 0PU overhead area, RES2 and RES3 indicate that the customer service positions occupied by the sub-block of OPU payload area.

也可以用PSI[N"+i+l]开销表示第i个客户端口对应的客户业务类型,其中l《i《N, 0《j《[254/N]-1([254/N]是N除254的整数部分),此时0PU开销区域的RES2的低4 bit与RES1的8 bit组合表示该客户业务的起始列、RES3的8 bit与RES2的高4 bit组合表示该客户业务的结束列。 Can also be used PSI [N "+ i + l] denotes the i th overhead client port corresponding customer service type, wherein l" i "N, 0" j "[254 / N] -1 ([254 / N] is in addition to low N 4 bit RES2 represents the starting column customer service RES1 combination of 8 bit integer portion 254), then the overhead area 0PU, RES3 of 8 bit 4 bit high in combination with RES2 represents the customer's business the end of the column.

例如,如果接入4个客户业务,则N的值为4, g口,将OPU净荷区域分为4个子块,i取值为1〜4, j取值为0〜62,则PSI [2] 、PS工[6]、…、 PSI[250]的值表示第1个客户业务类型、相应的RES3〜RES1值表示第1个客户业务,即相应的子块在0TN帧结构中的结束位置和开始位 For example, if the access client 4 service, the value of N is 4, G port, the OPU payload area is divided into four sub-blocks, the value of I 1~4, j value of 0~62, then the PSI [ 2], PS station [6], ..., PSI [250] represents the value of a customer service type, the corresponding value represents a RES3~RES1 client service, i.e. the end of the respective sub-blocks in the frame structure 0TN position and start position

置;……;PSI[5]、 PSI[9]、…、PSI[253]位置表示第4个客户业务类型,相应的RES3〜RES1位置表示第4个客户业务在0TN帧结构中的结束位置和开始位置。 Set; ......; PSI [5], PSI [9], ..., PSI [253] represents the position of the fourth client service type, indicates the position of the respective end position RES3~RES1 fourth client service frame structure in 0TN and the starting position.

这种循环赋值的方式,可用于指示对某个特定的客户业务进行速率调整,如果对应的该客户业务为低速CBR或低速ODU业务,就可以根据需要确定是否需要在PSI[,j+i+l]对应的OTN帧对第i个客户业务进行调整处理,调整处理采用G.709标准规定的方法。 Such assignments of the cycle, may be used to indicate a particular rate adjustment for the customer service, the customer service if the corresponding low speed or low CBR traffic ODU, can be determined according to whether the PSI [, j + i + L] corresponding to the i-th frame OTN client service adjustment processing, adjustment method using G.709 standard process.

用PSI[,j+i+l]循环规定每个客户业务的方法可以保证对低速CBR或低速ODU客户业务的调整周期较小,每隔N帧就有一次调整机会, 否则,可能需要经过256帧才能对一个客户业务进行一次调整操作。 With PSI [, j + i + l] for each predetermined cycle customer service can guarantee a small adjustment period of low or low CBR traffic ODU customer, there is one justification opportunity every N frames, otherwise, it may take 256 frame in order to adjust once a customer's business operations. 根据这种循环赋值进行调整的方法可以补偿在标准规定范围内的频偏差 The assignment method of this cycle can be compensated for adjusting the frequency standard deviation is within a predetermined range

升° Rise

同样,也可以采用复帧对准序列MFAS的取值指定对应的客户业务, 以指示可以对该客户业务进行速率调整,例如接入4个客户业务的情况, 根据MFAS的bit[78]取值确定对哪一个客户业务进行速率调整,当这个客户业务是低速CBR信号或低速ODU信号时,需要判断是否采用异步映射,由OPU开销区域中的调整控制字节JC、负调整机会字节NJO、正调整机会字节PJO进行相应的调整控制。 Similarly, the complex may be used MFAS frame alignment sequence of values ​​corresponding to the designated customer traffic, rate adjustment may be to indicate that the customer's business, for example, the case of four access business customers, according to the MFAS bit [78] Value determining which of a rate adjustment for customer service, the customer service when the low-speed or low-speed signal CBR ODU signal needs to judge whether to adopt the asynchronous mapping, controlled by the JC byte in the overhead area OPU adjustment, a negative justification opportunity NJO bytes, positive justification opportunity PJO bytes corresponding adjustment control.

采用这种开销处理方式,可以实现最多254个不同客户业务到OTN 帧的映射和复用处理,包括不同客户的CBR业务、不同客户的低速ODU 业务、不同客户的数据业务,以及不同客户的CBR业务、低速ODU业务和数据业务的混合复用和映射,它不受OPU净荷区域划分的限制、不受接入的客户业务带宽的限制。 With this overhead processing mode, it can be realized up to 254 different customer traffic to the OTN frame mapping and multiplexing process, including different customers CBR service, different customers low traffic ODU, the data traffic of different customers, different customers and CBR the mixed traffic, low traffic and data traffic ODU multiplexing and mapping, it is not limited OPU payload area division, client service from the access bandwidth.

现举另一实际应用例如下:对于2个STM-4加上1个GbE的客户 For another practical example now follows: For two STM-4 plus 1 GbE of the client

业务信号映射复用到0PU1净荷区域的情况如下:根据不同客户端口的带宽需求,将0PU的净荷区域划分成三个子块(子块W〜子块tt3),按照客户业务端口个数划分,将属于每一个客户业务端口的净荷区域定义为子块,每个子块的带宽大小不受限制,对于 Where traffic signal mapping 0PU1 multiplexed payload area is as follows: according to the bandwidth needs of different clients ports, the payload area is divided into three sub-blocks 0PU (sub-block sub-blocks W~ TT3), is divided according to the number of customer service port , each belonging to a payload area defining customer service port sub-blocks, the bandwidth of each sub-block size is not limited, and for

STM-4,对应的子块占952列,对于GbE业务,对应的子块占1904列。 STM-4, the corresponding sub-block 952 accounts for GbE services, accounting for the corresponding sub-block 1904. 则OPU净荷区域的子块划分、每个客户端口所占OPU净荷区域的起止位置以及每个客户业务类型信息如图IO所示。 The OPU payload area is divided into sub-blocks, each client port OPU payload area occupied by the start and end of each client and the service type information IO as shown in FIG.

客户端口#1为STM-4,占用第17〜第968列之间的952列: Client port # 1 to STM-4, occupies 952 between the first 17~ of 968:

客户端口ttl的起始位置值应为OOOO 0001 0001; Ttl value client port starting position should OOOO 0001 0001;

结束位置值应为OOll 1100 1000; End position value should OOll 1100 1000;

因此RES1、 RES2、 RES3分别为0x11、 0x80、 0x3C。 Therefore RES1, RES2, RES3 are 0x11, 0x80, 0x3C.

客户端口#2为STM-4,占用第969〜第1920列之间的952列: Customer # 2 port STM-4, occupies 952 between the first 969~ of 1920:

客户端口S2的起始位置值应为0011 1100 1001; Client port starting position value S2 should 001,111,001,001;

结束位置值应为Olll 1000 0000; End position value should Olll 1000 0000;

因此RES1、 RES2、 RES3分别为0xC9、 0x03、 0x78。 Therefore RES1, RES2, RES3 were 0xC9, 0x03, 0x78.

客户端口#3为GbE,占用第1921〜第3824列之间的1904列: Client port # 3 to 1904 between GbE, occupies the 1921~ of 3824:

客户端口#3的起始位置值应为0111 1000 0001; Client port # 3 starting position value should 011,110,000,001;

结束位置值应为1110 1111 0000; End position value should 111,011,110,000;

因此RES1、 RES2、 RES3分别为0x81、 0x07、 OxEF。 Therefore RES1, RES2, RES3 are 0x81, 0x07, OxEF.

对于MFAS值为(3"+1+1)、 (3^+2+l)(0《j《83)的0TN帧,对应的RES3〜RES1及PSI[3&'+1+1]、 PSI [3*j+2+l]开销区域分别用于承载第一个STM-4和第2个STM-4客户业务在0PU1净荷区域的位置及客户业务类型信息,这时就可以分别对第1个STM-4和第2个STM-4客户业务到OPU净荷区域的映射进行相应的调整操作,以补偿STM-4业务与OTN 帧的频率偏差;MFAS值为(3"+3+l)对应的OTN帧的RES3〜RES1及PSI [3*j+3+l]开销区域则用于承载GbE客户业务在0PU1净荷区域的位置及客户业务类型信息。 For MFAS is (3 "+ 1 + 1), (3 ^ + 2 + l) (0" j "83) 0TN the frame, and the corresponding RES3~RES1 PSI [3 & '+ 1 + 1], PSI [ 3 * j + 2 + l] are used to carry the overhead area of ​​a STM-4 and STM-4 second client service location and the service type information 0PU1 client payload area, then it can be separately 1 a STM-4 and STM-4 second client service mapping OPU payload area of ​​the adjusting operation corresponding to the frequency offset compensation business and STM-4 OTN frame; the MFAS is (3 "+ 3 + l) RES3~RES1 and OTN frame corresponding PSI [3 * j + 3 + l] is used to carry overhead area GbE client service location and the service type information 0PU1 client payload area.

Claims (15)

  1. 1.一种OTN网络中业务复用的开销处理方法,其特征在于:它采用如下步骤: A、将低速业务信号映射和复用到OTN时,划分OTN帧的OPU净荷区域,所述OPU净荷区域被划分为若干大小相同的时隙; B、在OPU开销区域中,采用复帧对准序列MFAS所对应的净荷结构指示PSI表示将每个时隙分配给对应客户端口和相应客户业务类型的信息。 1. A method of processing overhead of the OTN network service multiplex, characterized in that: it uses the following steps: A, and low-speed traffic signals multiplexed OTN mapping, the divided OPU payload area of ​​the OTN frame, the OPU payload area is divided into a plurality of identical size slots; B, in the OPU overhead area, the frame alignment using multiplexed payload structure corresponding to the sequence indicated MFAS PSI represents each time slot assigned to a corresponding customer port and the corresponding client type of business information.
  2. 2. 根据权利要求1所述的OTN网络中业务复用的开销处理方法,其特征在于:所述的步骤A中,所述的各时隙在OPU净荷区域中按序号顺序排列、固定位于OPU净荷区域中。 The overhead processing method of claim 1 in the OTN network service multiplexing claim, wherein: said step A, said slots each arranged in numerical order OPU payload area, located in a fixed OPU payload area.
  3. 3. 根据权利要求1所述的OTN网络中业务复用的开销处理方法,其特征在于:所述的步骤A中,所述的各时隙在OPU净荷区域中采用TDM 时分复用的方式,按序号固定位于OPU净荷区域中。 The overhead processing method of claim 1 in the OTN network service multiplexing claim, wherein: said step A, said each time slot in the TDM time division multiplexing manner OPU payload area , located in a fixed sequential order OPU payload area.
  4. 4. 根据权利要求1所述的OTN网络中业务复用的开销处理方法,其特征在于:所述的步骤B中,将所述的净荷结构指示PSI字节划分为两段,分别表示相关时隙所对应的客户业务类型和所分配的客户端PI。 The overhead processing method of claim 1 in the OTN network service multiplexing claim, wherein: said step B, the indication of the PSI byte of the payload structure is divided into two sections, respectively associated time slot corresponding to the type of customer service and the assigned client PI.
  5. 5. 根据权利要求1或2或3或4所述的OTN网络中业务复用的开销处理方法,其特征在于:采用复帧对准序列MFAS的取值指定对应的时隙,表示对该时隙所对应的客户业务进行速率调整。 The overhead of the OTN processing method 1 or 2 or 3 or 4 in the service multiplex claim, wherein: the alignment sequence using MFAS multiframe time slot corresponding to the specified values, represents the time slot for the corresponding customer service rate adjustment.
  6. 6. 根据权利要求1或2或3或4所述的OTN网络中业务复用的开销处理方法,其特征在于:采用对净荷结构指示PSI循环赋值的方式, 表示对某个特定的时隙所对应的客户业务进行速率调整。 The overhead of the OTN processing method 1 or 2 or 3 or 4 in the service multiplex claim, wherein: the manner in payload structure using PSI indicating assignment cycle, expressed in a particular time slot customer service for the corresponding rate adjustment.
  7. 7. 根据权利要求1所述的0TN网络中业务复用的开销处理方法,其特征在于:所述的低速业务信号为低速CBR信号、低速0DU信号、低速数据信号,或其中的多种信号的混合。 The overhead processing method of claim 1 0TN network service multiplexing claim, wherein: said signal is a low-speed low CBR traffic signal, the low-speed 0DU signal, low speed data signal, wherein a plurality of signals or mixing.
  8. 8. 根据权利要求7所述的0TN网络中业务复用的开销处理方法,其特征在于:对于所述的低速CBR信号或低速ODU信号,需要判断是否采用异步映射,由OPU开销区域中的调整控制字节JC、负调整机会字节NJO、正调整机会字节PJO进行相应的调整控制。 Overhead processing method according to claim 7 0TN network service multiplexing claim, wherein: for said low-speed or low-speed signal CBR ODU signal, determines whether to use asynchronous mapping need to adjust the area by the OPU OH control byte JC, a negative justification opportunity bytes of NJO, justification opportunity bytes PJO n corresponding adjustment control.
  9. 9. 一种OTN网络中业务复用的开销处理方法,其特征在于:A、 将低速业务信号映射和复用到OTN时,划分OTN帧的OPU净荷区域,所述OPU净荷区域被划分为若干子块;B、 在OPU开销区域中,采用复帧对准序列MFAS所对应的净荷结构指示PSI表示客户端口和相应客户业务类型的对应信息,并利用OPU开销区域的开销字节表示相应客户业务在OPU净荷区域的子块位置信息。 9. A method of processing overhead of the OTN network service multiplex, characterized in that: A, and low-speed traffic signals multiplexed OTN mapping, the divided OPU payload area of ​​the OTN frame, the OPU payload area is divided into sub-blocks; B, in OPU overhead area, the frame alignment using multiplexed payload structure corresponding to the sequence indicated MFAS PSI indicates client port and the corresponding client information corresponding to the service type, and using the overhead area OPU overhead bytes corresponding client information service sub-block position of OPU payload area.
  10. 10. 根据权利要求9所述的0TN网络中业务复用的开销处理方法,其特征在于:所述的客户业务在OPU净荷区域的子块位置信息通过OPU 开销区域的三个保留字予以指示。 10. The overhead processing method of claim 9 0TN network service multiplexing claim, wherein: said customer information service sub-block position of OPU payload area reserved word be indicated by three OPU overhead area .
  11. 11. 根据权利要求9所述的OTN网络中业务复用的开销处理方法,其特征在于:采用对净荷结构指示PSI循环赋值的方式,表示某个特定的客户业务在OPU净荷区域中的子块位置。 11. The overhead processing method of claim 9 OTN network service multiplexing claim, wherein: the payload using the assigned structure indicates PSI cyclic manner, represents a particular business customer OPU payload area sub-block location.
  12. 12. 根据权利要求9或10或11所述的OTN网络中业务复用的开销处理方法,其特征在于:采用所述的净荷结构指示PSI循环赋值的方式,指示对某个特定的客户业务进行速率调整。 12. A method of processing overhead of the OTN 9 or 10 or 11 in the service multiplex claim, wherein: said payload structure using the indication manner PSI cyclic assignment, an indication of a particular customer service the rate adjustment.
  13. 13. 根据权利要求9或10或11所述的OTN网络中业务复用的开销处理方法,其特征在于:采用复帧对准序列MFAS的取值指定对应的客户业务,表示对该客户业务进行速率调整。 13. A method for overhead processing according to the OTN 9 or 10 or 11 in the service multiplex claim, wherein: multiplex frame alignment using MFAS sequence values ​​corresponding to the specified customer service, the customer service representation rate adjustment.
  14. 14. 根据权利要求9所述的0TN网络中业务复用的开销处理方法,其特征在于:所述的低速业务信号为低速CBR信号、低速ODU信号、低速数据信号,或其中的多种信号的混合。 14. The overhead processing method of claim 9 0TN network service multiplexing claim, wherein: said signal is a low-speed low CBR traffic signal, the low-speed ODU signal, low speed data signal, wherein a plurality of signals or mixing.
  15. 15. 根据权利要求14所述的OTN网络中业务复用的开销处理方法, 其特征在于:对于所述的低速CBR信号或低速ODU信号,需要判断是否采用异步映射,由OPU开销区域中的调整控制字节JC、负调整机会字节NJO、正调整机会字节PJO进行相应的调整控制。 15. The OTN network overhead processing method of claim 14 in service multiplexing claim, wherein: for said low-speed or low-speed signal CBR ODU signal, determines whether to use asynchronous mapping need to adjust the area by the OPU OH control byte JC, a negative justification opportunity bytes of NJO, justification opportunity bytes PJO n corresponding adjustment control.
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Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101047604A (en) * 2006-05-17 2007-10-03 华为技术有限公司 Data redundant transmitting method and system
CN100459555C (en) 2006-05-17 2009-02-04 华为技术有限公司 Method and device for transmitting unit signal by light-penetrating channel
US7809027B2 (en) 2006-09-25 2010-10-05 Futurewei Technologies, Inc. Network clock synchronization floating window and window delineation
US8340101B2 (en) 2006-09-25 2012-12-25 Futurewei Technologies, Inc. Multiplexed data stream payload format
US8660152B2 (en) 2006-09-25 2014-02-25 Futurewei Technologies, Inc. Multi-frame network clock synchronization
US7986700B2 (en) 2006-09-25 2011-07-26 Futurewei Technologies, Inc. Multiplexed data stream circuit architecture
US8976796B2 (en) 2006-09-25 2015-03-10 Futurewei Technologies, Inc. Bandwidth reuse in multiplexed data stream
US8295310B2 (en) 2006-09-25 2012-10-23 Futurewei Technologies, Inc. Inter-packet gap network clock synchronization
US7675945B2 (en) 2006-09-25 2010-03-09 Futurewei Technologies, Inc. Multi-component compatible data architecture
US8494009B2 (en) 2006-09-25 2013-07-23 Futurewei Technologies, Inc. Network clock synchronization timestamp
US7813271B2 (en) 2006-09-25 2010-10-12 Futurewei Technologies, Inc. Aggregated link traffic protection
US8588209B2 (en) 2006-09-25 2013-11-19 Futurewei Technologies, Inc. Multi-network compatible data architecture
US7961751B2 (en) * 2006-09-25 2011-06-14 Futurewei Technologies, Inc. Multiplexed data stream timeslot map
CN101578794B (en) 2007-01-26 2012-12-12 华为技术有限公司 Multiplexed data stream circuit architecture
CN1946012A (en) 2006-11-01 2007-04-11 华为技术有限公司 Method and device for dispatching light transmission net signal
WO2008074180A1 (en) * 2006-12-07 2008-06-26 Zte Corporation Method for transferring the low-speed stm/sts signal
CN101291179B (en) 2007-04-17 2011-03-23 华为技术有限公司 Customer signal transmission method in optical transmitting network and related equipment
CN102098595B (en) 2007-04-17 2012-11-07 华为技术有限公司 Customer signal transmitting method in optical transport network and related equipment
CN101325465B (en) 2007-06-15 2010-10-27 华为技术有限公司 Method for transmitting client signal in light transmission network and correlated equipment
CN101335750B (en) * 2007-06-29 2012-08-08 华为技术有限公司 Method and apparatus for mapping Ethernet encoding block to transmission of optical network
CN101345700B (en) 2007-07-10 2011-12-07 华为技术有限公司 Method and apparatus for mapping Ethernet code blocks transmitted to the optical transmission network
CN100589365C (en) 2007-09-14 2010-02-10 中兴通讯股份有限公司 Method for time slot partition and overhead processing of optical payload unit in light transmission network
CN101350691B (en) 2008-09-05 2013-04-24 华为技术有限公司 Method and apparatus for service concourse and ADM division-insertion multiplexing
CN101384093B (en) 2008-09-28 2011-06-08 华为技术有限公司 Service data mapping method and device, composite mapping method
CN101378399B (en) 2008-09-28 2012-04-04 华为技术有限公司 Method and apparatus for mapping and de-mapping business data
JP5359202B2 (en) 2008-11-06 2013-12-04 富士通株式会社 Frame generating apparatus, an optical transmission system, a frame generating method, and an optical transmission method
CN101800614B (en) 2009-02-05 2014-08-13 华为技术有限公司 Universal mapping and demapping method and device in optical transport network
CN101800912B (en) * 2009-02-10 2016-08-10 华为技术有限公司 Implementation method and apparatus for mapping and demapping of client signals
CN101854220A (en) * 2009-04-01 2010-10-06 华为技术有限公司 Method and device for transmitting and receiving service data
CN103825668B (en) * 2009-12-24 2017-06-16 华为技术有限公司 Generic mapping procedure gmp mapping method, demapping method and apparatus
WO2011075901A1 (en) 2009-12-24 2011-06-30 华为技术有限公司 Generic mapping procedure (gmp) mapping method, de-mapping method and device thereof
CN103248509B (en) * 2012-02-13 2018-09-14 中兴通讯股份有限公司 Method and apparatus for managing an optical data unit
WO2013181826A1 (en) * 2012-06-07 2013-12-12 华为技术有限公司 Method and device for transmitting and receiving otn overhead
CN103684651B (en) * 2012-09-13 2018-02-13 中兴通讯股份有限公司 OTN mixing constant bit rate traffic interface to a data receiving method and apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1534952A (en) 2003-03-28 2004-10-06 阿尔卡特公司 Method of mapping third layer grouping on synchronous digital transmission netowrk or optical transmission network

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1534952A (en) 2003-03-28 2004-10-06 阿尔卡特公司 Method of mapping third layer grouping on synchronous digital transmission netowrk or optical transmission network

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Interfaces for the Optical Transport Network. telecommunication standardization sector of itu.ITU-T G.709/Y.1331. 2003
光传送网中数字包封技术. 刘继忠,周德新.桂林电子工业学院学报,第23卷第5期. 2003

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