WO2009036618A1 - Dispositif d'interconnexion distribuée par bus partagé - Google Patents

Dispositif d'interconnexion distribuée par bus partagé Download PDF

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Publication number
WO2009036618A1
WO2009036618A1 PCT/CN2007/003314 CN2007003314W WO2009036618A1 WO 2009036618 A1 WO2009036618 A1 WO 2009036618A1 CN 2007003314 W CN2007003314 W CN 2007003314W WO 2009036618 A1 WO2009036618 A1 WO 2009036618A1
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WIPO (PCT)
Prior art keywords
service
module
cross
space division
line
Prior art date
Application number
PCT/CN2007/003314
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English (en)
French (fr)
Inventor
Liang Xia
Jianhui Huang
Yan Yuan
Original Assignee
Zte Corporation
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Publication date
Application filed by Zte Corporation filed Critical Zte Corporation
Priority to PL07845686T priority Critical patent/PL2197218T3/pl
Priority to EP07845686A priority patent/EP2197218B1/en
Priority to ES07845686T priority patent/ES2396591T3/es
Publication of WO2009036618A1 publication Critical patent/WO2009036618A1/zh

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Classifications

    • 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
    • H04J3/1611—Synchronous digital hierarchy [SDH] or SONET
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/15—Interconnection of switching modules
    • H04L49/1515—Non-blocking multistage, e.g. Clos
    • H04L49/1523—Parallel switch fabric planes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J2203/00—Aspects of optical multiplex systems other than those covered by H04J14/05 and H04J14/07
    • H04J2203/0001—Provisions for broadband connections in integrated services digital network using frames of the Optical Transport Network [OTN] or using synchronous transfer mode [STM], e.g. SONET, SDH
    • H04J2203/0003—Switching fabrics, e.g. transport network, control network
    • H04J2203/0005—Switching elements
    • H04J2203/0008—Time switch details
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J2203/00—Aspects of optical multiplex systems other than those covered by H04J14/05 and H04J14/07
    • H04J2203/0001—Provisions for broadband connections in integrated services digital network using frames of the Optical Transport Network [OTN] or using synchronous transfer mode [STM], e.g. SONET, SDH
    • H04J2203/0003—Switching fabrics, e.g. transport network, control network
    • H04J2203/0012—Switching modules and their interconnections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J2203/00—Aspects of optical multiplex systems other than those covered by H04J14/05 and H04J14/07
    • H04J2203/0001—Provisions for broadband connections in integrated services digital network using frames of the Optical Transport Network [OTN] or using synchronous transfer mode [STM], e.g. SONET, SDH
    • H04J2203/0073—Services, e.g. multimedia, GOS, QOS
    • H04J2203/0082—Interaction of SDH with non-ATM protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/10—Packet switching elements characterised by the switching fabric construction
    • H04L49/101—Packet switching elements characterised by the switching fabric construction using crossbar or matrix
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/10—Packet switching elements characterised by the switching fabric construction
    • H04L49/102—Packet switching elements characterised by the switching fabric construction using shared medium, e.g. bus or ring
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/55—Prevention, detection or correction of errors
    • H04L49/557—Error correction, e.g. fault recovery or fault tolerance

Definitions

  • the present invention relates to a distributed space division cross-device for a shared bus, and more particularly to a cross-scheduling technique for services in the field of optical transmission.
  • the implementation of these functions usually requires the use of a cross-over device, which uses the cross-device to provide cross-scheduling and protection of the service.
  • the transmission device with the cross-unit usually uses a centralized cross-matrix, and the service signals of each service access board and line board. After being processed, the sub-rack backplane bus is connected to the centralized cross-connecting unit.
  • the service access board and the line board have multiple types and a large number, which are inserted in the service slots on the subrack, and the cross unit is inserted.
  • FIG. 1 it is a block diagram of the traditional centralized crossover transmission equipment architecture.
  • two interleaving units 002 and 003 are generally configured, one for the main cross unit 002 and one for the alternate cross unit 003, two
  • the board is identical.
  • the number of customer service access units 001 is configured according to the number of customer service signals. Multiple blocks can be configured.
  • Line unit 004 can also be configured with multiple blocks. Any one of the customer service access units 001 is used with the primary and backup.
  • the connecting channel with the main cross unit 002 is called a working channel, and the connecting channel with the alternate cross unit is called a protection channel.
  • the customer service access unit 001 can switch between the working channel and the protection channel as needed.
  • any one of the line units 004 and the main use and the cross unit have a plurality of high speed data channels, and the high speed channels pass through
  • the speed back plate is realized, the connection channel with the main cross unit 002 is referred to as a working channel, and the connection channel with the alternate cross unit 003 is referred to as a protection channel, and the line unit 004 can be performed between the working channel and the protection channel as needed.
  • the customer service access unit 001 and the line unit 004 are connected to the intersecting units 002 and 003 through a high speed backplane, and the intersecting units 002 and 003 can flexibly interleave and schedule these high speed connections.
  • the structure of the centralized crossover system is not difficult to find.
  • the following disadvantages are met: Because the crossover unit adopts the 1+1 backup mode, it needs to occupy two slots, and the location must be fixed, which reduces the valuable service boards.
  • the number of slots and the flexibility of the location Especially in the compact transmission equipment, due to the limitation of the structure size, the proper amount of the slot is very limited. If the centralized crossover is used, the installation position of the two service boards is reduced, and the number of service access is reduced.
  • Each service board must be connected to the active and standby cross units through the backplane signal.
  • the number of signals is large and the backplane design is complicated.
  • the cross-matrix cross-matrix must be set according to the maximum cross-scale of this sub-frame, so the cross-matrix is large and costly.
  • the centralized cross-architecture architecture is not suitable for such transmission equipment: Compact transmission equipment, requiring as many services as possible, but not requiring high cross-scale or service scheduling capabilities, cost-sensitive transmission equipment .
  • the technical problem to be solved by the present invention is to provide a distributed crossover device for sharing a bus, which overcomes the requirement that the existing centralized crossover cannot meet the requirements of a compact transmission device, and solves the problem that the centralized crossover unit occupies a valuable service access slot.
  • the problem is that the number of backplane signals is reduced, the design requirements of the backplane are reduced, and the cost of the equipment is reduced.
  • the present invention provides a distributed cross-device with a shared bus, which is composed of a plurality of service boards, characterized in that each service board passes its internal distributed space division cross-matrix module and external
  • the cross-shared bus is connected by two or two.
  • the service board includes: a space division cross matrix module, a client service processing module, and a line service processing module;
  • the space division cross-matrix module is configured to receive an output signal of the customer service processing module and the line service processing module, and complete cross-scheduling of service signals of the board;
  • the customer service processing module is configured to connect a customer optical signal and perform optical/electrical and electrical/optical conversion and data clock processing, and perform service performance detection for different service boards, and generate signals to the space division cross matrix module. ;
  • the line service processing module is configured to complete framing and demapping of the line signal, and perform optical/electrical and electrical/optical conversion, and perform line signal detection for different service boards, and generate signals to the space division cross matrix module;
  • the shared bus is used to connect the space division cross-matrix module of each service board, and the service signal of each service board can be scheduled to be transmitted to the other service board through the space division cross-matrix module.
  • the cross matrix module On the cross matrix module.
  • the service board further includes:
  • the aggregation/de-aggregation module is connected to the client service processing module and the space division cross-matrix module, and is used for performing aggregation and de-aggregation between service signals and line signals of multiple clients, where the aggregation/de-aggregation module does not When the aggregation and de-aggregation operations are performed, the line signal corresponds to a service signal.
  • the device of the present invention further includes: a space division cross-matrix module on each service board, which includes two upper and lower interfaces, respectively connected to the upper and lower two shared buses, and each service board is connected in series Form a shared bus.
  • the shared bus is a closed loop bus or an open chain bus.
  • the bandwidth of the upper and lower interfaces of the shared bus is 4xl.25G bandwidth or 4x2.5G bandwidth.
  • the customer service processing module is an SFP optical module
  • the space division cross matrix module is a 12x12 space division cross chip
  • the line service processing module is a line service processing module adopting an optical transport network mode.
  • the aggregation/de-aggregation module further adopts a general frame processing program manner. Complete the encapsulation of data and the aggregation and de-aggregation module of the customer service signal to the line signal.
  • the number of customer service processing modules in the service board is at least two, and the number of line service processing modules in the service board is at least one.
  • the new shared bus and the distributed space division crossover technology are adopted, the requirement for the capacity of the space division cross chip is reduced, the number of the backplane bus is reduced, and the number of the backplane bus is reduced.
  • the design of the backplane bus improves the number of system service boards and the number of access services, and achieves an improvement in system cost reduction, which simplifies the structure and complexity of the device and saves development time.
  • FIG. 1 is a structural diagram of a conventional centralized crossover transmission device according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of a distributed crossover device networking of a shared bus according to an embodiment of the present invention
  • FIG. 3 is a schematic block diagram of a distributed crossover device sharing a bus according to an embodiment of the present invention.
  • FIG. 4 is a schematic block diagram of a distributed cross-scheduling device for a GbE service according to an embodiment of the present invention
  • FIG. 5 is a schematic block diagram of a distributed cross-scheduling device for an SDH service according to an embodiment of the present invention.
  • the present invention provides a distributed crossover device for sharing a bus.
  • the present invention is well suited for use with transmission devices that require less service scheduling capabilities, limited device size, multiple access services, and low cost.
  • the specific embodiments are described in detail below, but are not intended to limit the invention.
  • FIG. 2 it is a topology structure of a transmission device network using the inventive device, and multiple service boards are connected by an internal distributed cross module and an external cross bus.
  • the service board shares the cross-bus bandwidth, and the service scheduling is performed between the service boards through the distributed cross-module and the cross-bus.
  • FIG. 3 it is a detailed functional block diagram of the present invention shown in FIG. 2, and each service board has the same structure. Only the composition of one service board is described below:
  • Customer service processing module 1101 which functions to connect customer optical signals and perform optical/electrical and electrical
  • the space division cross matrix module 1102 is configured to perform cross-scheduling of service signals, and the cross-scale of the traffic is determined according to actual needs.
  • the convergence and convergence module 1103 functions to aggregate and de-aggregate multiple customer service signals to line signals. This module is not required. When the aggregation and de-aggregation of customer services are not performed, there are multiple line signals, and customers. The number of businesses corresponds one by one.
  • the line service processing module 1104 is configured to perform framing and deframing of the line signal and optical/electrical and electrical/optical conversion, and simultaneously detect the line signal.
  • the shared bus 2000 is used to connect the cross-matrix of each service board.
  • the services of each service board can be scheduled to be transmitted to the cross matrix of another service board through the cross-matrix.
  • the cross matrix on each service board is divided into upper and lower interfaces, which are respectively connected to the upper and lower shared buses, and each service board is connected in series to form a bus (2000).
  • a bus (2000) According to the need (2000), it can be a closed loop bus or an open chain bus.
  • the number of signal lines of the bus and the maximum rate of each signal line can be various as needed.
  • the customer service processing module 1101 accesses, performs optical/electrical and electrical/optical conversion, data clock processing, and performs service performance detection.
  • the signal is then sent to the space division cross-matrix module 1102.
  • the line signal is processed by the line processing module 1104, where the framing and deframing of the line signal and the optical/electrical and electrical/optical conversion are performed, and the line signal is detected at the same time, and then the line signal is sent to 1103 for convergence and de-aggregation processing.
  • the aggregated and deaggregated processed signals are then coupled to a spatial division cross-matrix module 1104.
  • the space division cross-matrix module 1102 is respectively connected to the shared bus 2000 through its upper and lower bus interfaces, and is respectively connected to the service board 1200 through the shared bus 2000.
  • Any customer service signal of the service board can be dispatched to the lines of other service boards through the space division cross-matrix module.
  • the signals of the service board line signals can be dispatched to the customer service department of any other service board.
  • the number of service boards on the bus may be multiple, and the size of the space division cross matrix module is determined according to actual service scheduling requirements.
  • the bus bandwidth refers to the product of the number of bus signals and the single signal rate, and the number and rate are also according to the service rate and The scheduling capability is determined. If there is no aggregation and resolution requirement, the service board can have no 1103 module. In this case, the number of line signals corresponds to the number of customer services.
  • the shared bus 2000 can be a backplane PCB trace, which can be in other forms, such as a high speed cable connection.
  • Embodiment 1 Distributed cross-scheduling device for GbE service:
  • FIG. 4 an embodiment of a distributed cross-scheduling device for GbE services is described, and a specific device will be described below.
  • Each service board has two GbE client interfaces, and the customer service processing module 3101 uses an SFP (Small Form-factor Pluggable) optical module to connect the client signals.
  • the matrix module 3102 uses a 12x12 space division cross chip, which is connected to 3101, 3103, and 2100, respectively.
  • the rate of each cross signal is 1.25G, and the bandwidth of the shared bus upper and lower interfaces is 4xl.25G, which is a closed ring bus.
  • the aggregation/de-aggregation module 3103 uses the GFP (Generic Framing Procedure) method to complete the encapsulation of data and the convergence and de-aggregation of customer service signals to line signals.
  • the line service processing module 3104 uses the OTN (Optical Transport Network) method to complete the framing and de-frame of the line signal, and the line interface signal is 0TU1.
  • OTN Optical Transport Network
  • the dotted arrow indicates an example of a service scheduling mode:
  • the client service 1 accessed by the 3101 crosses to the lower port of the 2100 bus through the space division cross-matrix module 3102, and is connected to the 3202, and the service is performed after the crossover 3202. 1
  • Service 1 and service 6 are aggregated and sent to 3304 and sent to line C.
  • the reverse convergence process is reversed from the above process.
  • service 3 crosses to the 2100 upper port through 3202 and connects to 3102. After re-crossing, it is sent to 3103, where it is aggregated with service 2, sent to 3104 and sent to line A, and the reverse convergence process and the above process. Inverse.
  • Service 5 is crossed to port 2100 through 3302 and connected to 3202. After being crossed again, it is sent to 3203, where it is aggregated with service 4 and sent to 3204 and sent to line B.
  • the reverse convergence process is opposite to the above process.
  • the customer services 7 and 8 pass through the air separation cross-matrix module 3402 and the straight channel 3403, and are aggregated and sent to the 3404 and sent to the line D.
  • the reverse convergence process is opposite to the above process.
  • Embodiment 2 Distributed cross-scheduling device for SDH service:
  • FIG. 5 an embodiment of a distributed cross-scheduling device for SDH services is described, and a specific device will be described below.
  • Each service board has two STM16 client interfaces.
  • the customer service processing module 4101 uses SFP optical modules to connect client signals, and the space division cross matrix module 4102 uses 12x12 slots.
  • the cross-chips are connected to 4101, 4103 and 2200 respectively, each cross-signal has a rate of 2.5G, and the shared bus upper and lower interface bandwidths are respectively 4x2.5G bandwidth, which is a closed ring bus. There is no convergence and convergence part in the distributed crossover device.
  • Only the STM16 service monitoring part 4103 sends the signal to the line service processing 4104 after completing the performance detection, and the 4104 adopts the OTN (Optical Transport Network) mode to complete the framing and solution of the line signal.
  • the frame and line interface signals are OTU1, and each service board has two line interfaces.
  • the dotted arrow shows an example of a service scheduling mode: 4101 accessed customer service 1 is broadcasted by the space division cross-matrix module 4102, split into two channels, and sent to the lower ports of the 4103 and 2200 buses, respectively. After 4103 completes the performance test, it is sent to 4104 and sent to line A. The other signal crosses to 4202, and is crossed again and sent to 4203. 4203 is sent to 4204 and sent to line C. The reverse connection process is combined with The above process is reversed, but at 4102, the signals from line C and line A are selected, and the signal with good signal quality is sent to 4101 and sent to customer interface 1.
  • the distributed crossover device with a shared bus reduces the requirement for the capacity of the space division cross chip due to adopting a new shared bus and distributed space division crossover technology, and reduces the requirement.
  • the number of backplane buses simplifies the design of the backplane bus, increases the number of system service boards and the number of access services, and achieves improvements in system cost reduction, simplifies the structure and complexity of the device, and saves development time.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Multi Processors (AREA)
  • Computer And Data Communications (AREA)
  • Time-Division Multiplex Systems (AREA)

Description

一种共享总线的分布式交叉装置 技术领域
本发明涉及一种共享总线的分布式空分交叉装置， 尤其涉及光传输 领域的业务的交叉调度技术。
背景技术
当前， 传输设备接入的客户业务种类和数量都大量增加， 同时传输 组网复杂性也有很大提高， 这就要求传输设备能够灵活的支持客户业务 的上下和灵活的调度能力已及完善的保护功能。 实现这些功能通常需要 采用交叉设备， 利用交叉设备来提供业务的交叉调度以及保^倒换功能， 具备交叉单元的传输设备通常采用集中式交叉矩阵， 各个业务接入单板 和线路单板的业务信号经处理后， 通过子架背板总线与集中交叉单元连 接， 业务接入板和线路单板会有多种类型和较多的数量， 插在子架上的 业务槽位上， 交叉单元插在固定的交叉板槽位处， 所有的业务调度都是 通过交叉单元的交叉矩阵来实现的， 出于可靠性的要求， 通常要求交叉 单元自身做 1+1热本分， 当一个交叉单元出现故障后， 业务能够自动切 换到另一个交叉单元中。
如图 1所示， 是传统集中交叉方式的传输设备架构框图， 在一个子 架中一般会配置两块交叉单元 002和 003， 一块作主用交叉单元 002， 一 块作备用交叉单元 003, 两块板子是完全一样的， 客户业务接入单元 001 的数量根据客户业务信号的数量配置， 可配置多块， 线路单元 004也可 配置多块， 任何一个客户业务接入单元 001 都和主用与备用交叉单元间 各有多个高速数据通道， 这些高速通道通过高速背板来实现， 把与主用 交叉单元 002的连接通道称作工作通道， 而把与备用交叉单元的连接通 道称作保护通道， 客户业务接入单元 001 可以根据需要在工作通道和保 护通道间进行切换。 两个交叉单元之间具有主备倒换控制逻辑， 用于实 现两个交叉单元间的主用和备用的倒换控制。 任何一个线路单元 004也 和主用与 用交叉单元间各有多个高速数据通道， 这些高速通道通过高 速背板来实现， 把与主用交叉单元 002的连接通道称作工作通道， 而把 与备用交叉单元 003的连接通道称作保护通道， 线路单元 004可以根据 需要在工作通道和保护通道间进行切换。 客户业务接入单元 001 和线路 单元 004通过高速背板与交叉单元 002、 003连接， 交叉单元 002、 003 可以灵活的对这些高速连接进行交叉和调度。
由上所述集中式交叉体系的结构特点， 不难发现其有如下缺点： 由于交叉单元采用 1+1备份方式， 因此需要占用两个槽位， 而且位 置必须固定， 减少了宝贵的业务单板的槽位数量和位置的灵活性。 特别 是在紧凑型的传输设备中， 由于结构大小的限制， 本身槽位适量就十分 有限， 如果釆用集中交叉一下就要减少两个业务单板的安装位置， 减少 了业务接入的数量。
各个业务单板都必须通过背板信号与主用和备用交叉单元连接， 信 号数量众多， 背板设计复杂。
交叉单元的交叉矩阵必须按本子架最大的交叉规模设置， 因此交叉 矩阵的规模巨大， 成本很高。
综上所述， 集中式交叉体系结构不适合这样的传输设备： 紧凑型的 传输设备， 要求接入的业务数量尽可能多， 而对交叉规模或业务调度能 力要求不高， 成本敏感的传输设备。
发明内容
本发明所解决的技术问题在于提供一种共享总线的分布式交叉装 置， 以克服了现有集中交叉不能满足紧凑型传输设备的要求， 解决了集 中交叉的交叉单元占用宝贵的业务接入槽位的问题， 减少了背板信号的 数量， 筒化了背板的设计要求， 同时降低了设备的成本。
为了实现上述问题， 本发明提供了一种共享总线的分布式交叉装置， 由多个业务单板组成， 其特征在于， 每个业务单板之间通过其内部分布 式空分交叉矩阵模块与外部交叉共享总线两两连接， 所述业务单板包括： 空分交叉矩阵模块、 客户业务处理模块、 线路业务处理模块； 其中， 所述空分交叉矩阵模块， 用于接收所述客户业务处理模块和线路业 务处理模块的输出信号， 完成所在单板的业务信号的交叉调度；
所述客户业务处理模块， 用于连接客户光信号并进行光 /电和电 /光变 换和数据时钟处理， 以及为不同的业务单板进行业务性能检测， 产生信 号给所述空分交叉矩阵模块；
所述线路业务处理模块， 用于完成线路信号的成帧和解帧以及光 /电 和电 /光变换， 同时为不同的业务单板进行线路信号检测， 产生信号给所 述空分交叉矩阵模块；
所述共享总线， 用于连接各个业务单板的空分交叉矩阵模块， 各个 业务单板的业务信号通过其空分交叉矩阵模块可以调度到该共享总线上 传输到另外一个业务单板的空分交叉矩阵模块上。
本发明所述的装置， 其中， 所述业务单板进一步包括：
汇聚 /解汇聚模块，连接所述客户业务处理模块和空分交叉矩阵模块， 用于完成多个客户的业务信号与线路信号之间的汇聚和解汇聚， 其中， 当所述汇聚 /解汇聚模块不进行汇聚和解汇聚操作时， 所述线路信号与业 务信号相对应。
本发明所述的装置， 其中， 进一步包括： 所述每个业务单板上的空 分交叉矩阵模块， 其包括上下两个接口， 分别连接到上下两段共享总线 上， 各个业务单板首尾串联形成一条共享总线。
本发明所述的装置， 其中， 所述共享总线， 为闭环的环形总线或开 放的链型总线。
其中， 所述共享总线的上下两个接口带宽， 为 4xl.25G的带宽或 4x2.5G的带宽。
本发明所述的装置， 其中， 所述客户业务处理模块， 为 SFP光模块; 所述空分交叉矩阵模块， 为 12x12的空分交叉芯片；
所述线路业务处理模块， 为采用光传送网方式的线路业务处理模块。 其中， 所述汇聚 /解汇聚模块， 进一步为采用通用帧处理程序方式来 完成数据的封装和客户业务信号到线路信号的汇聚和解汇聚模块。
其中， 所述业务单板中的客户业务处理模块至少为 2个； 所述业务 单板中的线路业务处理模块至少为 1个。
采用本发明所述装置， 与现有技术相比， 由于采取了新型的共享总 线和分布式空分交叉技术， 降低了对空分交叉芯片容量的要求， 减少了 背板总线数目， 筒化了背板总线的设计， 提高了系统业务单板数量和接 入业务数量， 取得了降低系统成本的进步， 简化了装置的结构和复杂性， 节省了开发时间。
附图概迷
图 1是本发明实施例所述的传统集中交叉的传输设备架构图； 图 2是本发明实施例所述的一种共享总线的分布式交叉装置组网拓 朴结构图；
图 3是本发明实施例所述的一种共享总线的分布式交叉装置原理框 图；
图 4是本发明实施例所述的 GbE业务的分布式交叉调度装置原理框 图；
图 5是本发明实施例所述的 SDH业务的分布式交叉调度装置原理框 图。
本发明的最佳实施方式
本发明在这里提供了一种共享总线的分布式交叉装置， 本发明非常 适合那些对于要求业务调度能力不是非常高、 设备尺寸有限、 接入业务 数量多， 成本低廉的传输设备的使用。 以下对具体实施方式进行详细描 述， 但不作为对本发明的限定。
如图 2所示， 是本使用发明装置的传输设备组网的拓朴结构， 多个 业务单板通过其内部分布式交叉模块与外部交叉总线两两连接， 各个业 务单板共享交叉总线带宽， 业务调度通过分布交叉模块和交叉总线在各 个业务单板之间进行。
如图 3所示， 是图 2所示的本发明的详细原理框图， 各个业务单板 结构相同， 下面仅描述一个业务板的组成：
客户业务处理模块 1101， 其作用是连接客户光信号并进行光 /电和电
/光变换和数据时钟处理， 以及进行业务性能检测。 当一个业务板有多个 客户业务接入时， 客户业务处理模块 1101就有多个。
空分交叉矩阵模块 1102, 其作用是完成业务信号的交叉调度， 其交 叉规模根据实际需要确定。
汇聚解汇聚模块 1103, 其作用是完多个客户业务信号到线路信号的 汇聚和解汇聚功能， 此模块不是必须的， 当不进行客户业务的汇聚和解 汇聚时， 线路信号就有多个， 与客户业务数量一一对应。
线路业务处理模块 1104, 其作用是完成线路信号的成帧和解帧以及 光 /电和电 /光变换， 同时进行线路信号的检测。
共享总线 2000， 其作用是用于连接各个业务板的交叉矩阵， 各个业 务板的业务通过交叉矩阵可以调度到该总线上传输到另外一个业务单板 的交叉矩阵上。 每个业务板上的交叉矩阵分为上下两个接口， 分别连接 到上下两段共享总线上， 各个业务板首尾串联形成一条总线（2000 ) 。 根据需要（2000 ) 可以是闭环的环形总线， 也可以是开放的链型总线。 总线的信号线数目和每个信号线的最高速率根据需要可以有多种。
本装置各部分之间的关系：
客户业务处理模块 1101接入， 进行光 /电和电 /光变换、 数据时钟处 理， 以及进行业务性能检测。 然后将信号送入空分交叉矩阵模块 1102。 线路信号经线路处理模块 1104, 在此处进行线路信号的成帧和解帧以及 光 /电和电 /光变换， 同时进行线路信号的检测，然后将线路信号送入 1103 进行汇聚和解汇聚处理， 经过汇聚和解汇聚处理的信号再与空分交叉矩 阵模块 1104连接。 同时空分交叉矩阵模块 1102通过其上下总线接口分 别连接到共享总线 2000， 通过共享总线 2000分别连接到业务单板 1200 和 InOOo
业务单板的任何一个客户业务信号通过空分交叉矩阵模块可以调度 到其他业务单板的线路上去， 同时业务单板线路信号解汇聚出的信号也 可以调度到任何其他业务单板的客户业务处输出。 其中， 总线上的业务 单板数量可以是多个， 空分交叉矩阵模块的大小根据实际业务调度需要 确定， 总线带宽指总线信号数目和单信号速率的乘积， 其数目和速率也 是根据业务速率和调度能力确定， 在没有汇聚和解决要求的情况下， 业 务单板可以没有 1103模块， 此时线路信号数量与客户业务数量对应。 共 享总线 2000可以是背板 PCB走线，可以是其他形式，比如高速电缆连接。
下面结合附图， 基本按照附图的顺序对技术方案的实施作进一步的 详细描述：
实施例一： GbE业务的分布式交叉调度装置：
如图 4所示， 介绍了 GbE业务的分布式交叉调度装置的实施例， 往 下描述具体的装置。
本实施例中由 4块结构相同的业务单板组成， 每个业务单板具备两 个 GbE客户接口， 客户业务处理模块 3101采用 SFP ( Small Form-factor Pluggable )光模块连接客户信号， 空分交叉矩阵模块 3102采用 12x12的 空分交叉芯片， 分别与 3101、 3103和 2100连接， 每个交叉信号的速率 为 1.25G, 共享总线上下接口带宽分别为 4xl.25G的带宽,为封闭环形总 线。 汇聚 /解汇聚模块 3103采用 GFP (通用帧处理程序， Generic Framing Procedure )方式来完成数据的封装和客户业务信号到线路信号的汇聚和 解汇聚功能。 线路业务处理模块 3104采用 OTN (光传送网）方式， 完成 线路信号的成帧和解帧， 线路接口信号为 0TU1。
图 4中， 虚线箭头所示为一种业务调度方式的例子： 3101接入的客 户业务 1通过空分交叉矩阵模块 3102交叉到 2100总线的下端口， 并连 接到 3202, 通过交叉后 3202将业务 1继续下送到 2100并连接到 3302, 通过再次交叉后将业务 1送给 3303,业务 1与业务 6汇聚后送给 3304并 发送到线路 C上， 反向接汇聚过程与上述过程相逆。 同理， 业务 3通过 3202交叉到 2100上端口并连接到 3102， 通过再 次交叉后送给 3103, 在这里与业务 2汇聚后送给 3104并发送到线路 A 上， 反向接汇聚过程与上述过程相逆。
业务 5通过 3302交叉到 2100上端口并连接到 3202, 通过再次交叉 后送给 3203,在这里与业务 4汇聚后送给 3204并发送到线路 B上，反向 接汇聚过程与上述过程相逆。
客户业务 7和 8通过空分交叉矩阵模块 3402后直通道 3403,汇聚后 送给 3404并发送到线路 D上， 反向接汇聚过程与上述过程相逆。
实施例二： SDH业务的分布式交叉调度装置：
如图 5所示， 介绍了 SDH业务的分布式交叉调度装置的实施例， 往 下描述具体的装置。
本实施例中由 4块结构相同的业务单板组成， 每个业务单板具备两 个 STM16客户接口， 客户业务处理模块 4101采用 SFP光模块连接客户 信号，空分交叉矩阵模块 4102采用 12x12的空分交叉芯片 ,分别与 4101、 4103和 2200连接， 每个交叉信号的速率为 2.5G, 共享总线上下接口带 宽分别为 4x2.5G的带宽，为封闭环形总线。此分布交叉装置中没有汇聚解 汇聚部分，仅有 STM16业务监测部分 4103,在完成性能检测后将信号送 给线路业务处理 4104, 4104采用 OTN (光传送网）方式， 完成线路信 号的成帧和解帧，线路接口信号为 OTU1 ,每个业务单板有两个线路接口。
图 5中， 虚线箭头所示为一种业务调度方式的例子： 4101接入的客 户业务 1通过空分交叉矩阵模块 4102进行广播,分成两路，分别送给 4103 和 2200总线的下端口， 在 4103处完成性能检测后送给 4104并发送到线 路 A上， 另一路信号交叉到 4202处， 并再次交叉后送给 4203, 4203在 送给 4204并发送到线路 C上，反向接汇聚过程与上述过程相逆 ,但在 4102 处要对线路 C和线路 A来的信号进行选收， 选择信号质量好的一路信号 送给 4101并发送到客户接口 1上。
同理， 客户业务 5、 6、 7、 8的交叉调度通上述方法， 分别被调度到 线路 G、 H、 E、 F上。 客户业务 2、 4没有做调度， 直通后送到对应的线 路接口 B、 D上，客户接口 3由于被客户业务 1信号占用， 不能接入客户 业务。
工业实用性
采用本发明所述一种共享总线的分布式交叉装置， 与现有技术相比， 由于采取了新型的共享总线和分布式空分交叉技术， 降低了对空分交叉 芯片容量的要求， 减少了背板总线数目， 简化了背板总线的设计， 提高 了系统业务单板数量和接入业务数量， 取得了降低系统成本的进步， 简 化了装置的结构和复杂性， 节省了开发时间。

Claims

权 利 要 求 书
一种共享总线的分布式交叉装置， 由多个业务单板组成， 其特征 在于， 每个业务单板之间通过其内部分布式空分交叉矩阵模块与外部交 叉共享总线两两连接， 所述业务单板包括： 空分交叉矩阵模块、 客户业 务处理模块、 线路业务处理模块； 其中，
所述空分交叉矩阵模块， 用于接收所述客户业务处理模块和线路业 务处理模块的输出信号， 完成所在单板的业务信号的交叉调度；
所述客户业务处理模块， 用于连接客户光信号并进行光 /电和电 /光变 换和数据时钟处理， 以及为不同的业务单板进行业务性能检测， 产生信 号给所述空分交叉矩阵模块；
所述线路业务处理模块， 用于完成线路信号的成帧和解帧以及光 /电 和电 /光变换， 同时为不同的业务单板进行线路信号检测， 产生信号给所 述空分交叉矩阵模块；
所述共享总线， 用于连接各个业务单板的空分交叉矩阵模块， 各个 业务单板的业务信号通过其空分交叉矩阵模块可以调度到该共享总线上 传输到另外一个业务单板的空分交叉矩阵模块上。
2、 如权利要求 1所述的装置， 其特征在于， 所述业务单板进一步包 括：
汇聚 /解汇聚模块，连接所述客户业务处理模块和空分交叉矩阵模块, 用于完成多个客户的业务信号与线路信号之间的汇聚和解汇聚， 其中， 当所述汇聚 /解汇聚模块不进行汇聚和解汇聚操作时， 所述线路信号与业 务信号相对应。
3、 如权利要求 1所述的装置， 其特征在于， 进一步包括： 所述每个 业务单板上的空分交叉矩阵模块， 包括上下两个接口， 分别连接到上下 两段共享总线上， 各个业务单板首尾串联形成一条共享总线。
4、 如权利要求 1所述的装置， 其特征在于， 所述共享总线， 为闭环 的环形总线或开放的链型总线。
5、 如权利要求 3所述的装置， 其特征在于， 所述共享总线的上下两 个接口带宽， 为 4xl.25G的带宽或 4X2.5G的带宽。
6、如权利要求 1所述的装置，其特征在于，所述客户业务处理模块, 为 SFP光模块；
所述空分交叉矩阵模块， 为 12x12的空分交叉芯片；
所述线路业务处理模块， 为采用光传送网方式的线路业务处理模块。
7、 如权利要求 2所述的装置， 其特征在于， 所述汇聚 /解汇聚模块， 进一步为采用通用帧处理程序方式来完成数据的封装和客户业务信号到 线路信号的汇聚和解汇聚模块。
8、 如权利要求 2所述的装置， 其特征在于， 所述业务单板中的客户 业务处理模块至少为 2个；所述业务单板中的线路业务处理模块至少为 1 _
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