CN104365114A - Apparatus and method for switching information transported using a hierarchical data structure - Google Patents

Apparatus and method for switching information transported using a hierarchical data structure Download PDF

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CN104365114A
CN104365114A CN201280072213.4A CN201280072213A CN104365114A CN 104365114 A CN104365114 A CN 104365114A CN 201280072213 A CN201280072213 A CN 201280072213A CN 104365114 A CN104365114 A CN 104365114A
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data stream
output
order
switching
input
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CN201280072213.4A
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Chinese (zh)
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F·特斯塔
R·萨贝拉
M·R·卡萨诺瓦
M·利斯坦蒂
V·埃拉莫
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瑞典爱立信有限公司
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Priority to PCT/EP2012/056214 priority Critical patent/WO2013149660A1/en
Publication of CN104365114A publication Critical patent/CN104365114A/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q11/00Selecting arrangements for multiplex systems
    • H04Q11/0001Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0005Switch and router aspects
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J14/00Optical multiplex systems
    • H04J14/02Wavelength-division multiplex systems
    • H04J14/0201Add-and-drop multiplexing
    • H04J14/0202Arrangements therefor
    • H04J14/021Reconfigurable arrangements, e.g. reconfigurable optical add/drop multiplexers [ROADM] or tunable optical add/drop multiplexers [TOADM]
    • H04J14/0212Reconfigurable arrangements, e.g. reconfigurable optical add/drop multiplexers [ROADM] or tunable optical add/drop multiplexers [TOADM] using optical switches or wavelength selective switches [WSS]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q3/00Selecting arrangements
    • H04Q3/42Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • H04Q3/54Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised
    • H04Q3/545Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised using a stored programme
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J2203/00Aspects of optical multiplex systems other than those covered by H04J14/00
    • H04J2203/0001Provisions 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
    • H04J2203/0003Switching fabrics, e.g. transport network, control network
    • H04J2203/0005Switching elements
    • H04J2203/0007Space switch details
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J3/00Time-division multiplex systems
    • H04J3/16Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
    • H04J3/1605Fixed allocated frame structures
    • H04J3/1652Optical Transport Network [OTN]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q11/00Selecting arrangements for multiplex systems
    • H04Q11/0001Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0005Switch and router aspects
    • H04Q2011/0007Construction
    • H04Q2011/0016Construction using wavelength multiplexing or demultiplexing
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q11/00Selecting arrangements for multiplex systems
    • H04Q11/0001Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0005Switch and router aspects
    • H04Q2011/0052Interconnection of switches
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q2213/00Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13292Time division multiplexing, TDM
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q2213/00Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13383Hierarchy of switches, main and subexchange, e.g. satellite exchange

Abstract

A switching apparatus is provided for switching information transported using a hierarchical data structure, the hierarchical data structure comprising at least first and second order data flows, The switching apparatus comprises an input stage (210) comprising at least one input switching unit (21 1<1> to 21 1<H>), and an output stage (230) comprising at least one output switching unit (231<1> to 231<H>). A central stage (220) is coupled between the input stage (210) and the output stage (230), the central stage (220) comprising a central switching unit (221). The at least one input switching unit (21 1<1> to 21 1<H>) and the at least one output switching unit (231<1> to 231<H>) are configured to switch first order data flows contained within second order data flows. The central switching unit (221) is configured to switch only second order data flows, wherein the second order data flows have a higher order than the first order data flows.

Description

用于使用分级数据结构交换传输的信息的装置和方法 And a method for using the device information of the hierarchical data structure switched transmission

技术领域 FIELD

[0001] 本发明涉及一种用于使用分级数据结构交换传输的信息的装置和方法,分级数据结构例如是光信道教据单元流ODU流。 [0001] The present invention relates to a method for using a hierarchical data structure of a transmission apparatus and method for exchanging information, hierarchical data structure such as an optical channel data unit stream Taoism ODU stream.

背景技术 Background technique

[0002] 现有的分组-光传输平台(POTP)是基于集成分组、光传输网络(OTN)以及同一节点的波分复用(WDM)交换能力。 [0002] Existing packet - optical transport platform (POTP) is integrated packet based on wavelength division multiplexing, optical transport network (OTN) and the same node (WDM) switching capability. 现有技术已知不同类型的节点架构。 Different types of known prior art node architecture. 多数节点架构使用例如基于波长选择交换(WSS)技术的全光交换机。 Most node architecture using e.g. wavelength selectable switch (WSS) technology based all-optical switches. 这样的节点获得旁路业务的波长路由以及OTN或分组(或者两者),从而处理该节点处增加/减少的本地业务或者聚集/分解的本地业务。 Such a service node obtains a bypass or OTN wavelength routing and packet (or both), so that the processing increasing / decreasing traffic or a local aggregation / decomposition of the local service node.

[0003] 一些POTP架构使用分组交换结构,例如“不可知交换机”来实现OTN交换。 [0003] Some POTP architecture using packet switching fabric, such as "agnostic switch" to achieve OTN exchange. 其它的新近架构基于输入业务(来自线路和客户端接口)的电转换以及后续的OTN处理和交换。 Other recent business architecture based on the input electric conversion (from the line and client interface) and subsequent processing and switching of OTN. 通常认为后者是数字光电或者数字光传输方法,从这种意义上说,在每个节点中所有业务被转换为电格式,并且然后进行如在其它数字传输网络中执行的处理,所述数字传输网络例如是基于分组或者电路的网络。 The latter is generally considered a digital photo or digital optical transmission method that this sense, all traffic in each node are converted to an electrical format, and then processed as performed in other digital transmission network, the digital e.g. packet transmission network or a circuit-based network.

[0004] 当使用数字光电方法时,这使得WDM和OTN交换层能够集成在同一节点中。 [0004] When using the digital photoelectric method, which makes the exchange and OTN WDM layer can be integrated in the same node. 因为WDM和OTN交换层共享收发机和交叉点交换机,这能够降低成本和能耗。 Because the shared exchange layer and OTN WDM transceiver and crosspoint switches, which can reduce the cost and power consumption. Kish等人发表于2011年4月IEEE量子电学选定课题期刊(IEEE Journal of Selected Topics inQuantum Electronics),标题为“大规模InP光电集成电路的现状”(“Current Statusof Large-Scale InP Photonic Integrated Circuits”)的论文以及Zou 等人的美国专利7782843B2给出了集成方法的示例。 Kish et al., Published in April 2011 IEEE journal on selected topics of quantum electrical (IEEE Journal of Selected Topics inQuantum Electronics), entitled "Situation of large-scale InP photonic integrated circuit" ( "Current Statusof Large-Scale InP Photonic Integrated Circuits" ) papers and Zou et al., US Patent 7782843B2 shows an example of an integrated approach. 这种现有技术的解决方法基于严格的非阻塞大容量OTN交换机,所述OTN交换机能够交换从低阶ODU流(例如0DU0)到高阶ODU流(例如0DU3、0DU4)范围内的ODU子流。 This prior art solution based on rigorous large-capacity non-blocking switch OTN, OTN switch capable of switching from the low-order ODU stream (e.g. 0DU0) higher order ODU to ODU sub-stream within a range (e.g. 0DU3,0DU4) stream . 在这种情况下,OTN交换机(或者交叉连接交换机)完全可访问,从以下意义上说,从任意输入端口接收的每个子流都能被路由到任意ODU级别的任意输出端口。 In this case, OTN switch (or cross-connect switch) fully accessible, said from the sense, from each of the sub-stream received at any input port can be routed to any output port of any ODU level. 这就意味着OTN交换机的架构十分复杂,包括大型交换结构,从而成本高且功耗大。 This means the OTN switch architecture is very complex, including large-scale switch fabrics, so the high cost and high power consumption.

[0005] 下面讨论现有解决方案涉及的主要问题和缺点,将现有产品系列分组为三个主要类别: [0005] The following discussion of the main issues and shortcomings of existing solutions related to the existing product lines grouped into three main categories:

[0006] 1、包含透明波长交换的Ρ0ΤΡ、OTN以及分组交换机。 [0006] 1, comprising Ρ0ΤΡ, OTN transparent wavelength and the packet switch exchange. 这些解决方案举例说明了透明光学传输层相关联的优点和缺点。 These solutions illustrate the advantages and disadvantages of the transparent layer of the optical transmission associated. 尤其是,主要缺点为成本高、灵活性低(在ROADM部分中的约束)以及信号质量监测方面的可管理性低。 In particular, the main drawback of high cost and low flexibility (ROADM constraint portion) and manageability low signal quality monitoring. Eilenberger发表于0FC2011会议的文章OTuPl、标题为“未来能效分组网的集成电/光交换”(“Integrated Electrical/Optical Switching for Future Energy Efficient Packet Networks,,)的论文,以及Zhang发表于亚洲2009年通信和光电技术会议和展览会(Communicat 1ns and PhotonicsConference and Exhibit1n) (ACP)、标题为“具有波长管理池资源的新型多颗粒度光交换节点,,(“Novel Mult1-granularity Optical Switching Node with WavelengthManagement Pool Resources”)的论文公开了这种解决方案的示例。 Eilenberger published in 0FC2011 conference articles OTuPl, titled "The future of energy efficiency sub-network of integrated electrical / optical switching" ( "Integrated Electrical / Optical Switching for Future Energy Efficient Packet Networks ,,) papers, and Zhang published in Asia in 2009 communication and optoelectronic technology conference and exhibition (Communicat 1ns and PhotonicsConference and Exhibit1n) (ACP), entitled "multi-particle having a new wavelength optical resource management cell switching node ,, (" novel Mult1-granularity optical switching node with WavelengthManagement pool resources ") paper discloses an example of such a solution.

[0007] 2、在同一不可知交换平台中的包含分组的Ρ0ΤΡ和0ΤΝ交换以及透明波长交换。 [0007] 2, the same platform agnostic switching and packet containing Ρ0ΤΡ 0ΤΝ exchange and a transparent wavelength switch. 优点和缺点与上面的类似,但是相同的交换平台用于0ΤΝ和分组交换,这以更高的功耗和更少的优化成本为代价。 With the advantages and disadvantages similar to the above, the same switching and packet switching platform for 0ΤΝ This higher power consumption and to optimize the cost less expense. 有时由于平台在多个应用(无论是否需要0ΤΝ交换)中使用的灵活性,这些较高的成本是合理的。 Sometimes, because of the flexibility of the platform used in multiple applications (regardless of whether 0ΤΝ exchange), these higher costs are reasonable. Belotti等发表于0FC2011会议的文章OTuGl、标题为“交叉路口传输网络、MPLS和0ΤΝ在分组传输网络中的作用”(“Transport Networks at aCrossroads, the roles of MPLS and OTN en packet transport networks”)的论文讨论了这样的示例。 Belotti and other meetings of the article published in the 0FC2011 OTuGl, titled "Intersection transmission network, MPLS, and the role of 0ΤΝ packet transmission network" ( "Transport Networks at aCrossroads, the roles of MPLS and OTN en packet transport networks") paper an example of this discussion.

[0008] 3、基于光-电-光(0E0)技术的包含0ΤΝ以及WDM交换的数字可配置的增加/减少复用器(R0ADM),包括所有信道的每个节点中的光电转换,如上述Kish等的美国专利7782843B2中所示。 [0008] 3, based on the photoelectric - light (0E0) and 0ΤΝ techniques include increasing the number of configurable WDM exchange / reduction multiplexer (R0ADM), each node comprising all of the channels in the photoelectric conversion, as described above Kish U.S. Patent No. 7782843B2 and the like in FIG. 主要优点是充分的灵活性、可管理性以及宽松的传输要求,这归因于数字光传输层。 The main advantage is full flexibility, manageability, and loose transmission requirements, due to the digital optical transmission layer. 然而,主要缺点是所有的输入业务必须由0ΤΝ独立地处理,而不管是否需要这样。 However, the main drawback is that all incoming traffic to be handled independently by the 0ΤΝ, regardless of whether you need it. 因此,这样的解决方案比上述解决方案具有消耗更多功率的缺点。 Thus, such a solution has the disadvantage of consuming more power than the solution described above.

[0009] 前两个类别基于透明光传输,其交换机使用昂贵的全光设备。 [0009] The first two categories based transparent light transmission, which the use of expensive all-optical switch apparatus. 这样的交换机的主要缺点是需要管理具有所有与其相关联的问题的模拟光层。 The main drawback of such switches is the need for analog light management layer having associated therewith the problem of all. 此外,这样的交换机不允许完全不同的技术之间的任何真实硬件集成。 Furthermore, any real hardware between this switch does not allow completely different technology integration. 因此,为了实现这些类别的低成本的技术方案,需要按比例减少灵活性特征(例如无色、无方向、无竞争、动态控制、容易管理等)。 Accordingly, in order to achieve low-cost aspect of these categories, it is necessary proportionally reduced flexibility characteristics (e.g. as a colorless, non-directional non-competitive, dynamic control, easy to manage, etc.).

[0010] 图1示出了实现上述第三类别的已知架构,由此基于光-电-光(0E0)技术集成0ΤΝ和WDM交换。 [0010] FIG. 1 shows a known architecture for the third category, whereby based on the light - power - light (0E0) and WDM technology integration 0ΤΝ exchange. 由解复用单元接收波分复用(WDM)输入信号101^10、。 By the demultiplexing unit receives a wavelength division multiplexed (WDM) input signal 101 ^ 10 ,. 从相应光纤(未示出)接收WDM输入信号ΙΟΙ^ΙΟΙν。 From the respective optical fibers (not shown) receives an input WDM signal ΙΟΙ ^ ΙΟΙν. 复用的WDM信号由光电(0E)转换器lOS^lOSw转换成电数据流,对应于光信道教据单元流(0DU流)107^107^将经过电转换的高阶0DU流解复用成低阶0DU流,并且随后由输入交换单元106交换。 WDM signal multiplexed by the photo (0E) converter lOS ^ lOSw into an electrical data stream, corresponding to 107 ^ 107 ^ demultiplexed to Taoism data cell stream optical signal (0DU flow) through the high-order 0DU conversion of the stream into low 0DU order flow, and then switched by the input switching unit 106. 交换单元106在其输入端接收K个高阶0DU流107^1(^,对其进行电学上解复用,并且0ΤΝ交换它们以输出Μ个低阶0DU流108r108M。例如,对于0DU1和0DU2流,Μ = 4XK。直接将Μ个低阶0DU流108Γ108π^送到空间交换机109,例如交叉连接交换机。因为空间交换机109可以从不同的交换单元接收不同阶的0DU流或者具有旁路交换单元高阶0DU流,因此空间交换机109配置为将任意阶的数据流从任意输入端口交换到任意输出端口。将空间交换机109输出端的低阶0DU流I1^I1m发送到输出交换单元1012,由此将低阶0DU流0ΤΝ交换并且复用到高阶0DU流lll1-lllp电光(E0)转换器将高阶0DU流转换为光数据流。一个或多个复用器115^115,配置为将一组光数据流复用成相应输出WDM信号117^117,。每个WDM信号11^-117^稱合到相应光纤用于向前的传输。 Switching unit 106 receives at its input terminals 107 K higher order streams 0DU 1 ^ (^, demultiplexes them electrically, and to exchange their 0ΤΝ Μ low order output stream 0DU 108r108M. For example, for flow 0DU1 and 0DU2 , Μ = 4XK. [mu] directly lower order streams 108Γ108π ^ 0DU space switch 109 to, for example, cross-connect switches. since 0DU space switch 109 may receive streams of different order from different switching units or higher order switching unit having a bypass 0DU flow, so the space switch 109 is configured to exchange the data stream of any order from any input port to any output port. 0DU lower order stream output of space switch 109 ^ I1 I1m transmitted to the output switching unit 1012, whereby the low-order 0DU 0ΤΝ flow and exchange streams multiplexed into higher order 0DU lll1-lllp electrooptic (E0) converter converts the stream into a higher order 0DU optical data stream or a plurality of multiplexers 115 ^ 115, configured to convert a set of optical data streams into respective output WDM signal 117 ^ 117 ^ ,. each bonded to respective optical fibers for transmitting forward 11-117 ^ said WDM signal.

[0011] 图1的交换架构的缺点是需要复杂、完全可访问以及严格非阻塞交换结构109,其具有很多个端口。 Disadvantage switching architecture [0011] FIG. 1 is a need for a complex, fully accessible and strictly non-blocking switching fabric 109, which has a number of ports. 这是因为,如上所述,交换结构109必须完全可访问,从这种意义上说,在任意0DU级别从任意输入端口接收的每个子流能够路由到任意输出端口。 This is because, as described above, the switch fabric 109 must be fully accessible, said this sense, at any level 0DU each sub-stream can be routed from any input port to any output port received. 例如,在lOGbs需要非常大的交换结构来处理0DU2数据流,这意味着当仅交换0DU1 (2.5Gbps)或ODUO(lGbps)数据流时,交换机没有被完全使用。 For example, in lOGbs it requires a very large switch fabric processing 0DU2 data stream, which means that only exchange 0DU1 (2.5Gbps) or ODUO (lGbps) data stream, the switch not being fully used. 这意味着这种交换结构109的架构昂贵并且耗费相当大量的功率。 This means that the switch fabric 109 architecture expensive and consume considerable amounts of power.

发明内容 SUMMARY

[0012] 本发明的一个目的是提供一种消除或减少至少一个或多个上述缺点的方法和装置。 [0012] An object of the present invention is to provide a method and apparatus for eliminating or at least reducing one or more of the above disadvantages.

[0013] 根据本发明的一个方面,提供了一种用于使用分级数据结构交换传输的信息的交换装置,所述分级教据结构至少包括第一和第二阶数据流。 [0013] In accordance with one aspect of the present invention, there is provided an apparatus exchanging information in a hierarchical data structure used for switching transmission of the data structure hierarchy Jiao comprises at least first and second order data stream. 所述交换装置包括输入级、输出级和连接在所述输入级和输出级之间的中间级,所述输入级包括至少一个输入交换单元,所述输出级包括至少一个输出交换单元,所述中间级包括中间交换单元。 Said switching means comprises an input stage, output stage and intermediate stage is connected between the input and output stages, the input stage comprises at least one input switching means, the output stage comprises at least one output switching means, said intermediate stage includes an intermediate exchange unit. 所述至少一个输入交换单元和至少一个输出交换单元配置为交换包含在第二阶数据流中的第一阶数据流。 At least one input unit and at least one output switching exchange unit configured to exchange data stream comprising a first stage in second order data stream. 所述中间交换单元配置为仅交换第二阶数据流,其中所述第二阶数据流具有比所述第一阶数据流更高的阶。 The intermediate exchange unit configured to exchange only the second-order data stream, wherein the second stream having a higher order than the data stream of the first order of the order data.

[0014] 根据本发明的第二方面,提供了一种用于使用分级数据结构交换传输的信息的交换装置中的方法,所述分级数据结构至少包括第一和第二阶数据流。 [0014] According to a second aspect of the present invention, there is provided a method for exchanging information in a device using a hierarchical data structure of the switched transmission, said hierarchical data structure comprises at least a first stage and a second data stream. 所述方法包括步骤:在交换装置的输入级交换包含在第二阶数据流中的第一阶数据流,所述输入级包括至少一个输入交换单元。 Said method comprising the steps of: a first data stream input stage switching step switching device is included in the data stream in a second stage, the input stage comprises at least one input switching unit. 在交换装置的中间级仅交换第二阶数据流,所述中间级包括中间交换单元。 In the intermediate stage switching only the second-order switching device data flow, said intermediate stage includes an intermediate exchange unit. 所述方法还包括步骤:在交换装置的输出级交换包含在第二阶数据流中的第一阶数据流,所述输出级包括至少一个输出交换单元。 The method further comprises the step of: in a first stage the data stream output stage switch in the second switching means comprises order data stream, the output stage comprises at least one output switching unit.

[0015] 根据本发明的另一个方面,提供了一种用于控制如所附权利要求请求保护的交换装置的控制装置。 [0015] According to another aspect of the invention, there is provided a control apparatus for controlling the appended claims exchanger apparatus as claimed in. 所述控制装置包括:输入接口,用于接收第二阶数据流和第一阶数据流。 Said control means comprising: an input interface for receiving order data stream and a second data stream of the first order. 处理单元适用于组织第二阶数据流内的第一阶数据流,以便减少所述交换装置中阻塞的可能性。 The processing unit is adapted to organize the data stream of the second stage of the first order data stream, in order to reduce the possibility of blockage of the exchange apparatus. 所述控制装置还包括输出接口,用于输出其中具有组织的第一阶数据流的第二阶数据流。 Said control means further comprises an output interface for outputting a second stage having a first-order data stream organized data stream.

附图说明 BRIEF DESCRIPTION

[0016] 为了更好地理解本发明,并且更清楚地示出其如何生效,现在将仅通过示例参考以下附图,其中: [0016] For a better understanding of the present invention, and shows more clearly how it into effect will now be made by way of example only with reference to the following drawings, wherein:

[0017] 图1示出根据现有技术的交换装置; [0017] FIG 1 illustrates a switching device according to the prior art;

[0018] 图2示出根据本发明实施例的交换装置; [0018] Figure 2 illustrates a switching apparatus according to an embodiment of the present invention;

[0019] 图3示出根据本发明实施例的交换装置中执行的方法; [0019] Figure 3 illustrates a method of performing the switching apparatus of the embodiment according to the present invention;

[0020] 图4示出根据本发明另一个实施例的交换装置;以及 [0020] Figure 4 shows a switching apparatus according to another embodiment of the present invention; and

[0021] 图5示出根据本发明另一个实施例的控制装置。 [0021] FIG. 5 shows a control apparatus according to another embodiment of the present invention.

具体实施方式 Detailed ways

[0022] 如下将关于使用分级数据结构交换传输的信息的装置和方法描述本发明的实施例,例如光信道数据单元(ODU)数据流。 [0022] The apparatus and method of using information on the hierarchical data structure switched transmission embodiments of the invention described below, for example, an optical channel data unit (ODU) data stream. 然而应当注意到,本发明实施例旨在涵盖具有分级结构的其它形式的数据流。 It should be noted, however, intended to embrace other forms of embodiment have a hierarchical structure of a data stream according to the present invention.

[0023] 图2示出根据本发明实施例的交换装置,用于使用分级数据结构交换传输的信息,分级数据结构至少包括第一和第二阶数据流。 [0023] Figure 2 illustrates a switching apparatus according to an embodiment of the present invention, using a hierarchical data structure for the exchange of information transmission, hierarchical data structure comprises at least a first stage and a second data stream. 例如,分级数据结构可以包括光信道教据单元(ODU)数据流,例如0DU0、0DU1、0DU2、0DU3、0DU4……ODUX数据流。 For example, the hierarchical data structure may comprise an optical channel data unit Taoism (ODU) data stream, e.g. 0DU0,0DU1,0DU2,0DU3,0DU4 ...... ODUX data stream. 交换装置包括输入级210,其包括至少一个输入交换单元211^21^。 Switching means includes an input stage 210, which includes at least one input switching unit 211 ^ 21 ^. 交换装置还包括输出级230,其包括至少一个输出交换单元231^23^。 Switching means further comprises an output stage 230, which comprises at least one output switching unit 231 ^ 23 ^. 交换装置包括耦合在输入级210和输出级230之间的中间级220,中间级包括中间交换单元221。 Coupling means comprising an intermediate switching stage 220, an intermediate stage between the input stage 210 and output stage 230 of the switching unit 221 includes an intermediate.

[0024] 至少一个输入交换单元211^21^和至少一个输出交换单元231r231H配置为交换包含在第二阶数据流中的第一阶数据流,其中第二阶数据流具有比第一阶数据流更高的阶。 [0024] at least one input switching unit 211 ^ 21 ^ and at least one output switching unit 231r231H configured to exchange data stream comprises a first-order second-order data stream, which data stream has a second order than the first order data stream higher-order. 中间交换单元221配置为仅交换第二阶数据流。 Intermediate switching unit 221 configured to exchange only the second-order data stream.

[0025] 由于中间交换单元配置为仅交换第二阶数据流,这具有能够简化交换装置复杂度的优点,从而节省了成本和功耗。 [0025] Since the intermediate exchange unit configured to exchange only the second-order data stream, which has the advantage of being able to simplify the complexity of the switching devices, thereby saving cost and power consumption.

[0026] 根据本发明的一个实施例,图2的输入交换单元211将在其输入端接收的K个第二(或高)阶0DU流212r212K解复用为第一(或低)阶0DU流,0ΤΝ交换第一(低)阶0DU流,然后在输出K个第二(高)阶0DU流213r213K之前,将第一(低)阶0DU流再次复用到第二(高)阶0DU流中。 [0026] According to an embodiment of the present invention, FIG. 2 of the input switching unit 211 received at its input K second (or higher) order 0DU 212r212K stream demultiplexing a first (or lower) order 0DU stream , 0ΤΝ exchanging a first (low) order 0DU stream, and then outputs K second (high) before 213r213K order 0DU stream, the first (low) order 0DU second multiplexed stream (high) again in order 0DU stream . 以这种方式,能够由输入交换单元交换第二阶数据流中包含的第一阶数据流。 In this manner, the first-order data stream contained in the second-order data stream can be switched by the input switching unit. 以类似方式,图2的输出交换单元231将在其输入端接收的K个第二(或高)阶0DU流232r232K解复用为第一(或低)阶0DU流,0ΤΝ交换第一(低)阶0DU流,然后在输出K个第二(高)阶0DU流233r233K之前,将第一(低)阶0DU流再次复用为第二(高)阶0DU流。 In a similar manner, the output switching unit 231 in FIG. 2 will be received at its input K second (or higher) order 0DU 232r232K stream demultiplexing a first (or lower) order 0DU stream, 0ΤΝ first exchange (low ) order 0DU stream, and then outputs K second (higher) order 0DU stream prior 233r233K, the first (low) order 0DU streams multiplexed into a second (high) flow 0DU order again.

[0027] 第一阶数据流可以包括例如0DU0、0DU1、0DU2的低阶0DU子流,而第二阶数据流可以包括例如0DU3、0DU4的高阶0DU子流。 [0027] The data stream may comprise a first order, for example, lower order 0DU 0DU0,0DU1,0DU2 substream, the second order data stream may include, for example, higher order sub 0DU 0DU3,0DU4 stream. 注意到,如果第二阶数据流具有比第一阶数据流高的阶,则第一阶数据流和第二阶数据流可以分别包括0DU流的任意组合(0DU0、0DU1、0DU2、0DU3、0DU4......0DUX 的任意组合)。 It noted that, if the data stream has a second order higher than the first-order data stream in order, the first-order and second-order data stream data stream may comprise any combination 0DU stream (0DU0,0DU1,0DU2,0DU3,0DU4 respectively any combination of ...... 0DUX).

[0028] 中间交换单元221可以包括空间交换矩阵,例如具有输入/输出端口的交叉点交换机,以及具有不同粒度(0DU0……0DU4)的0ΤΝ交换机的后面级。 [0028] The switching unit 221 may include an intermediate space switching matrix, for example, an input / output port of the crosspoint switch, and a subsequent stage of different particle sizes (0DU0 ...... 0DU4) of 0ΤΝ switch.

[0029] 输入交换单元211^21^耦合以接收第二阶数据流212f212K的子集“K”,并且输出第二阶数据流213i_213K的对应子集K。 [0029] The input switching unit 211 ^ 21 ^ coupled to receive a second subset of the data stream 212f212K order of "K", and the output stage corresponding to the second subset of data streams 213i_213K K. 中间交换单元221耦合以从多个输入交换单元21^-21^的每个接收至少包括第二阶数据流2131-213K的子集的多个第二阶数据流,并且耦合以输出多个第二阶数据流232^232^输出交换单元231^23^.合以从中间交换单元221接收第二阶数据流232i_232K的子集,并且输出第二阶数据流233i_233K对应的子集。 Intermediate switching unit 221 coupled to receive a plurality of input switching units 21 ^ -21 ^ each receiving at least a second stage comprising a plurality of data streams subsets 2131-213K second order data stream, and outputs coupled to the plurality of second order data stream output 232 ^ 232 ^ 231 ^ 23 ^ switching unit. 233i_233K bonded to a corresponding subset of the subset of the intermediate switching unit 221 receives the second data stream 232i_232K order, and outputs the second level data stream.

[0030] 因此,图2的实施例在侧面级(输入和输出级210、230)使用0ΤΝ交换机,其能够交换子流(输入流的较低的层次),而侧面级和中间级之间的互连使用较高级别的0ΤΝ流实现。 [0030] Thus, using the embodiment of FIG. 2 embodiment 0ΤΝ switch stage side (input and output stages 210, 230), which is capable of exchanging sub-streams (input stream lower in the hierarchy), and between the sides of the stage and the intermediate stage interconnection using higher-level 0ΤΝ stream implementation. 以这种方式,给定交换机的某个总容量,能够减少侧面级和中间级之间互连的复杂度。 In this manner, set it to a total capacity of the switch, it is possible to reduce the complexity of the interconnections between the side and intermediate levels.

[0031] 下面将结合本申请的图4提供根据本发明的另一个实施例的交换装置的进一步细节。 [0031] below with reference to FIG. 4 of the present application provided according to another present invention, further details of switching apparatus according to an embodiment.

[0032] 图3示出了根据本发明另一个实施例的方法。 [0032] FIG. 3 illustrates a method according to another embodiment of the present invention. 该方法在用于使用分级数据结构交换传输的信息的交换装置中执行,分级数据结构包括至少第一和第二阶数据流。 The method is performed in the information exchanging means for exchanging transmission using a hierarchical data structure, the hierarchical data structure comprises at least a first stage and a second data stream. 例如,分级数据结构可以包括光信道数据单元(0DU)数据流。 For example, the hierarchical data structure may comprise an optical channel data unit (0DU) data stream.

[0033] 第一阶数据流可以包括低阶0DU子流(例如0DU0、0DU1、0DU2),而第二阶数据流可以包括高阶0DU流(例如0DU3、0DU4)。 [0033] The data stream may include a first-order low-order 0DU sub-streams (e.g. 0DU0,0DU1,0DU2), the second order data stream may include a high-order 0DU stream (e.g. 0DU3,0DU4). 注意到,如果第二阶数据流具有比第一阶数据流高的阶,则第一阶数据流和第二阶数据流可以包括0DU流的任意组合(0DU0、0DU1、0DU2、0DU3、0DU4......0DUX 的任意组合)。 It noted that, if the data stream has a second order higher than the first-order data stream in order, the first-order and second-order data stream data stream may comprise any combination 0DU stream (0DU0,0DU1,0DU2,0DU3,0DU4. any combination of ..... 0DUX).

[0034] 该方法包括步骤:步骤301,在交换装置的输入级中交换包含在第二阶数据流中的第一阶数据流,所述输入级包括至少一个输入交换单元(例如图2的至少一个输入交换单元211^2110。在步骤303中,仅在交换装置的中间级中交换第二阶数据流,所述中间级包括中间交换单元(例如图2的中间交换单元221)。在步骤305,在交换装置的输出级交换包含在第二阶数据流内的第一阶数据流,所述输出级包括至少一个输出交换单元(例如图2的至少一个输出交换单元231r231H)。 [0034] The method comprises the steps of: step 301, exchanging data stream comprises a first stage in a second stage in the input data stream of stage switch means, the input switching stage comprises at least one input unit (e.g., at least 2 of FIG. an input switching unit 211 ^ 2110. in step 303, only the data stream in order to exchange a second intermediate-level switching device, said intermediate stage includes an intermediate exchange unit (such as an intermediate exchange unit 221 of FIG. 2). in step 305 in a first data stream output stage switching means comprises a switching stage in the second-order data stream, the output stage comprises switching at least one output unit (e.g., at least one output of the switching unit of FIG. 2 231r231H).

[0035] 在一个实施例中,该方法还包括在由中间交换单元交换之前,将第二阶数据流划分为第二阶数据流(图2的2121-212K)的至少一个子集,用于由至少一个输入交换单元21^-21^中的相应交换单元交换;以及将从中间交换单元接收的第二阶数据流划分为第二阶数据流2321-232K的至少一个子集,用于由至少第一输出交换单元231^23^交换。 [0035] In one embodiment, the method further comprising the intermediate switching element prior to switching, the second step is a second-order data stream into a data stream (FIG 2121-212K 2) of at least a subset of, for at least one input switching unit 21 ^ -21 ^ of the respective switching unit exchange; and a second step from the intermediate data stream into a second switching means for receiving the order of at least a subset of the data stream 2321-232K for the at least a first output switching unit 231 ^ 23 ^ exchange.

[0036] 图4示出了根据本发明的另一个实施例的交换装置,用于使用分级数据结构交换传输的信息,分级数据结构包括至少第一和第二阶数据流。 [0036] FIG. 4 shows a switching apparatus according to another embodiment of the present invention, a hierarchical data structure used for the exchange of information transmission, hierarchical data structure comprises at least a first stage and a second data stream. 如图2,分级数据结构可以包括如上所述的光信道数据单元(ODU)数据流。 2, FIG hierarchical data structure may comprise an optical channel data unit (ODU) stream data as described above.

[0037] 交换装置包括输入级210,其包括至少一个输入交换单元211:-211^交换装置也包括输出级230,其包括至少一个输出交换单元231^231^交换装置包括耦合在输入级210和输出级230之间的中间级220,中间级220包括中间交换单元221。 [0037] The switching means includes an input stage 210, which includes at least one input switching unit 211: -211 ^ exchange device also includes an output stage 230, which comprises at least one output switching unit 231 ^ 231 ^ includes a switching means coupled to the input stage 210 and 220 intermediate stage, between the intermediate stage 220 output stage 230 includes an intermediate switching unit 221.

[0038] 至少一个输入交换单元ZII1HIh和至少一个输出交换单元231r231H配置为交换包含在第二阶数据流中的第一阶数据流,其中第二阶数据流具有比第一阶数据流更高的阶。 [0038] at least one input and at least one switching unit ZII1HIh output 231r231H exchange unit configured to exchange data stream comprising a first stage in the second-order data stream, wherein the second stream having a higher order than the data stream of the first-order data order. 中间交换单元221配置为仅交换第二阶数据流。 Intermediate switching unit 221 configured to exchange only the second-order data stream.

[0039] 图4的输入交换单元211将在其输入端接收的K个第二(或高)阶ODU流2121-212K解复用为第一(或低)阶ODU流,OTN交换第一(低)阶ODU流,然后在输出K个第二(高)阶ODU流213r213K之前,将第一(低)阶ODU流再次复用为第二(高)阶ODU流。 [0039] FIG. 4 the input switching unit 211 is received at its input K second (or higher) order ODU 2121-212K stream demultiplexing a first (or lower) order ODU stream, OTN first exchange ( low) order ODU stream, and then outputs K before the second (high) flow-order ODU 213r213K, the first (low) order ODU multiplex stream to a second (high) flow re-order ODU. 以这种方式,能够由输入交换单元211交换第二阶数据流中包含的第一阶数据流。 In this manner, it is possible to exchange the first data stream of the second-order-level data stream contained in the input switching unit 211. 以类似方式,图4的输出交换单元231将在其输入端接收的K个第二(或高)阶ODU流232^232!^?复用为第一(或低)阶ODU流,OTN交换第一(低)阶ODU流,然后在输出K个第二(高)阶ODU流233r233K之前,将第一(低)阶ODU流再次复用为第二(高)阶ODU流。 In a similar manner, the output switching unit 231 of FIG. 4 is received at its input K second (or higher) order ODU 232 stream 232 ^! ^? Multiplexed into a first (or lower) order ODU stream, OTN exchange a first (low) order ODU stream, and then outputs K second (higher) order ODU stream prior 233r233K, the first (lower) re-order ODU streams multiplexed into a second (high) flow-order ODU.

[0040] 例如,第一阶数据流可以包括低阶ODU子流(例如0DU0、0DU1、0DU2),第二阶数据流可以包括高阶ODU流(例如0DU3、0DU4)。 [0040] For example, the data stream may include a first-order low-order ODU sub-streams (e.g. 0DU0,0DU1,0DU2), second order data stream may include higher order ODU stream (e.g. 0DU3,0DU4). 将意识到,如果第二阶数据流具有比第一阶数据流高的阶,则第一阶数据流和第二阶数据流可以分别包括ODU流的任意组合(0DU0、ODUU0DU2、0DU3、0DU4......0DUX 的任意组合)。 It will be appreciated, if the data stream has a second order higher than the first-order data stream in order, the first-order and second-order data stream data stream may comprise any combination of ODU stream (0DU0, ODUU0DU2,0DU3,0DU4 respectively. any combination of ..... 0DUX).

[0041] 中间交换单元221可以包括空间交换矩阵,例如具有输入/输出端口的交叉点交换机,以及包括具有不同粒度(0DU0……0DU4) OTN交换机的后面级,例如侧面级。 [0041] The switching unit 221 may include an intermediate space switching matrix, for example, a crosspoint switch input / output port, and the subsequent stage having different particle sizes comprising (0DU0 ...... 0DU4) OTN switch, e.g. side level.

[0042] 输入交换单元211^21^耦合以接收第二阶数据流212f212K的子集“K”,并且输出第二阶数据流213i_213K的相应子集K。 [0042] The input switching unit 211 ^ 21 ^ coupled to receive a second subset of the data stream 212f212K order of "K", and outputs a second stage corresponding to a subset of data streams 213i_213K K. 中间交换单元221耦合以从多个输入交换单元21^-21^的每个接收至少包括第二阶数据流2131-213K的子集的多个第二阶数据流,并且耦合以输出多个第二阶数据流232^232^输出交换单元231^23^.合以从中间交换单元221接收第二阶数据流232i_232K的子集,并且输出第二阶数据流233i_233K的对应子集。 Intermediate switching unit 221 coupled to receive a plurality of input switching units 21 ^ -21 ^ each receiving at least a second stage comprising a plurality of data streams subsets 2131-213K second order data stream, and outputs coupled to the plurality of second order data stream output 232 ^ 232 ^ 231 ^ 23 ^ switching unit. engaged to a corresponding subset from the intermediate stage switching unit 221 receives the second data stream 232i_232K subset, and outputting a second order data stream 233i_233K.

[0043] 输入级210还包括耦合以接收复用的输入信号215i的第一解复用单元21七,所述输入信号如是波分复用(WDM)输入信号。 [0043] The input stage 210 is coupled to a first solution further comprises receiving multiplexed input signal 215i seven multiplexing unit 21, the case of wavelength division multiplexed input signal (WDM) input signal. 第一解复用单元211配置为将复用的输入信号215^?复用为第二阶数据流2121-212w的第一输入组W,第二阶数据流的第一输入组至少形成由至少一个输入交换单元211^21^的第一组接收的第二阶数据流。 A first demultiplexing unit 211 configured to input the multiplexed signal 215 ^? Second-order set of first input data stream is multiplexed into a W 2121-212w, a second input set of a first-order data stream formed by at least at least the second-order received data stream a first set of input switching unit 211 of ^ 21 ^. 提供了用于WDM输入信号的光电转换器236^236(^,用于将解复用的光信号转换为电信号以便由各交换级交换。 A photoelectric converter for providing an input WDM signal 236 ^ 236 (^, for converting an optical signal demultiplexed by the electrical signal to the exchange switching stage.

[0044] 输出级230还包括耦合以接收第二阶数据流233i_233w的第一输出组W的复用单元231,第二阶数据流2331-233w的第一输出组至少包括从至少一个输出交换单元231r231H的第一组接收的第二阶数据流。 [0044] The output stage 230 further includes a second stage coupled to receive the data stream multiplexing unit 231 outputs a first set of W 233i_233w second output order data stream of the first group comprises at least 2331-233w at least one output unit from the switching the second-order received data stream a first set of 231r231H. 复用单元231配置为将第二阶数据流233i_233w的第一输出组复用为复用的输出信号235i,例如波分复用输出信号。 Multiplexing unit 231 is configured to output a first data stream of the second-order group multiplexed 233i_233w multiplexed output signal 235i, for example, wavelength division multiplexed output signal. 提供了用于WDM输出信号的电光转换器2371-237w,以便在复用之前将电信号转换为光信号。 Providing optical converter for WDM output signal 2371-237w, prior to multiplexing the electrical signal into an optical signal.

[0045] 交换装置包括至少一个第二解复用单元214N,其耦合以接收第二复用的输入信号215N,例如WDM输入信号。 [0045] The at least one second switching means comprises a demultiplexing unit 214N, which is coupled to a second input signal received multiplexed 215N, e.g. WDM input signal. 第二解复用单兀214n配置为将第二复用的输入信号215N解复用为第二阶数据流2121-212w的第二输入组,第二阶数据流的第二输入组至少形成由至少一个输入交换单元211^21^的第二组接收的第二阶数据流。 Wu second demultiplexing a single input signal 214n is configured to 215N second multiplexed demultiplexing second data stream of the second-order group input 2121-212w second input order of the second set of data flows is formed by at least the second-order received data stream a second set of at least one input switching unit 211 of ^ 21 ^. 提供了用于WDM输入信号的光电转换器236^236^用于将解复用的光信号转换为电信号用于不同交换级的交换。 A photoelectric converter for providing an input WDM signal 236 ^ 236 ^ for converting the optical signal demultiplexed into electrical signals for the different switching stages of the exchange.

[0046] 至少一个第二解复用234N耦合以接收第二阶数据流233i_233w的第二输出组,第二阶数据流2331-233w的第二输入组至少包括从至少一个输出交换单元231^23^的第二组接收的第二阶数据流。 [0046] at least one second demultiplexed 234N coupled to receive a second step a second data stream output group 233i_233w second data stream of the second input stage comprises at least 2331-233w set at least one output from the switching unit 231 ^ 23 the second-order received data stream of the second set of ^. 至少一个第二复用单元234n配置为将第二阶数据流2331-233w的第二输出组复用为第二复用的输出信号235N,例如波分复用输出信号。 At least one second multiplexing unit 234n is configured to output a second data stream of the second-order group 2331-233w multiplexed output signal of the second multiplexed 235N, for example, wavelength division multiplexed output signal. 提供了用于WDM输出信号的电光转换器2371-237w,用于在复用之前将电信号转换为光信号。 Providing optical converter for WDM output signal 2371-237w, before multiplexing for converting electrical signals to optical signals.

[0047] 图4的实施例包括N个输入/输出线路(光纤方向),以及在每条光纤中传输的W个WDM信道。 Example [0047] FIG 4 includes N input / output lines (fiber direction), and a W WDM channels transmitted on each fiber. 例如,方向的数量在2-8之间变换(有些情况下超出该范围)。 For example, the number of directions in the 2-8 conversion (outside this range in some cases). WDM/0TN交换机的整体架构是三阶交换机,其中侧面级(输入和输出级)由0ΤΝ交换机元件组成,而中间级是执行简单空间交换功能的高容量交叉点交换机。 Overall architecture WDM / 0TN third-order switch is a switch, wherein the stage side (input and output stages) by the 0ΤΝ switch elements, the intermediate stage is a simple space switching function performs a high-capacity crosspoint switch.

[0048] 在交换装置的输入端,WDM解复用器211-214(每个方向一个,未示出)用于分离携带高阶otn流(第二阶数据流)的不同光信道,该高阶otn流后由光电转换器转化为光信号。 [0048] at the input of the switching means, the WDM demultiplexers 211-214 (one for each direction, not shown) is used to separate the entrained flow otn higher order (second order data stream) different optical channels, the high after step otn stream converted from an optical signal to the photoelectric converter. 所述一组0ΤΝ电信号212由输入交换单元211^21^处理,例如0ΤΝ交换元件。 The electrical signal set 0ΤΝ ^ 212211 ^ 21 input processed by the switching unit, e.g. 0ΤΝ switching element. 图4的实施例中示出的输入交换单元211^21^具有KXK的维。 Embodiment of Figure 4 is shown an input switching unit 211 ^ 21 ^ KXK having dimensions. 输入交换单元2111到211H接收并且输出第二阶数据流(高阶0DU流)。 211H to the input switching unit 2111 receives and outputs a second-order data stream (high-order 0DU stream).

[0049] 输入交换单元211^211 (例如OTN KXK交换机元件)适用于执行由每个交换机的输入端接收的高阶0DU流212i_212K的低阶0DU数据流(例如0DU2/l/0/f lex)信道的子流交换。 [0049] The input switching unit 211 ^ 211 (e.g. OTN KXK switch element) adapted to perform the high order 0DU received by the switch input of each data stream 212i_212K 0DU lower order stream (e.g. 0DU2 / l / 0 / f lex) a sub-channel stream switching. “H”是图4示出的示例的用于每个输入/输出线路215的输入交换单元的数量。 "H" is an example shown in FIG. 4 for the number of input switching units each input / output line 215. 可以看出,不是所有的WDM解复用器214之后的第二(高)阶0DU信道都需要由输入交换单元211^21^处理。 As can be seen, not all WDM demultiplexer a second (higher) order 0DU channel after 214 ^ 21 ^ 211 requires processing by the input switching unit. 例如,可能有W-HK个第二(高)阶流不需要0ΤΝ交换。 For example, there may be W-HK second (high) flow need not 0ΤΝ exchange order. 仅当H = W/Κ时,所有的第二(高)阶第二数据流才需要0ΤΝ交换。 Only when H = W / Κ, all of the second (higher) order of the second data stream only need 0ΤΝ exchange.

[0050] 注意到,在输入交换单元211r211H内的子流交换之后,低(第一)阶0DU聚集成第二(高)阶0DU流,其从相应输入交换单元2111到21111的不同的K个端口输出。 [0050] noted that, after the stream switching in the sub 211r211H input switching unit, a low (first) order 0DU gathered into a second (high) order 0DU stream, from which respective different input switching means 2111 to 21111 of the K output port. 聚集的高阶0DU流再由中间交换单元221 (例如交叉点交换机)向输出交换单元231^23^的一个输入端口路由。 0DU higher order aggregated exchange unit 221 and then flow from the intermediate (e.g. crosspoint switch) to the output switching unit 231 ^ 23 ^ input port of a route. 在输出交换单元231^23^中,执行低(第一)阶0DU信道的新的子流交换。 The output switching unit 231 ^ 23 ^, execute low (first) order 0DU new sub-channel stream switching. 交换后,子流再次聚集成第二(高)阶0DU流,其由输出交换单元231^23^输出,并且由电光转换器2371-237w转换成WDM信道。 After the exchange, re-aggregated into a second sub-stream (high) order 0DU stream, which is output from the output switching unit 231 ^ 23 ^, and converted by the optical converter 2371-237w into WDM channel. 传输子流的WDM信道的组由相应复用器234复用到输出光纤以用于沿着光网络传输。 WDM channel group of transmission sub-stream 234 multiplexed by the respective multiplexers to the output fiber along an optical transmission network.

[0051] 例如,第二阶数据流可以包括lOGbps的0DU2流,其中第一数据流各自包括2.5Gbps的4X0DU1流。 [0051] For example, the second data stream may include a step of lOGbps 0DU2 stream, wherein each data stream includes a first stream 4X0DU1 of 2.5Gbps. 在这种示例中,输入交换单元211将接收lOGbps的第二阶数据流,在输入交换单元211内交换2.5Gpbs的第一阶数据流,并且输出lOGbps的第二阶数据流。 In this example, the input switching unit 211 receives the data stream lOGbps second step, the first order 2.5Gpbs exchanging data stream in the input switching unit 211, and outputs the data stream of the second stage of lOGbps. 中间交换单元221将在输入端口接收lOGbps的第二阶数据流,并且将第二阶数据流交换到一个输出端口。 Intermediate switching unit 221 in the second stage input port for receiving lOGbps data stream, and the exchange of data stream to a second-order output port. 输出交换单元231将接收lOGbps的第二阶数据流,在输出交换单元231内交换2.5Gbps的第一阶数据流,并且输出lOGpbs的第二阶数据流。 Output switching unit 231 receives the data stream lOGbps second step, the first order exchange 2.5Gbps data stream within the output switching unit 231, and outputs the data stream of the second stage of lOGpbs.

[0052] 以这种方式,由于中间交换单元221配置为仅交换第二阶数据流,因此可以减少复杂度并且更加有效。 [0052] In this manner, since the intermediate switching element 221 configured to exchange only the second-order data stream, and the complexity can be reduced more effectively. 注意到,在所有的WDM信道中,一些需要增加/减少,例如由于它们需要端接到客户端设备。 Noted that in all the WDM channels, some of the need to increase / decrease, for example, due to their requirement to the client terminal device.

[0053] 当使用图4描述的交换设备时,上述图3的方法还可以包括下面的步骤。 [0053] When the switching device described using FIG. 4, FIG. 3 above-described method may further comprise the following steps. 该方法包括步骤:接收第一复用的输入信号215 (例如波分复用输入信号),并且将第一复用的输入信号215解复用为第二阶数据流2121-212w的第一输入组,第二阶数据流的第一输入组至少形成由至少一个输入交换单元211^21^的第一组交换的第二阶数据流212^212^ The method comprises the steps of: receiving a first multiplexed input signal 215 (e.g., wavelength division multiplexed input signal) and the first input signal 215 multiplexed demultiplexing the second step of the first data stream of input 2121-212w group, a second input set of a first-order data stream to form at least a first set of second level data exchange by at least one input switching unit 21 ^ 211 ^ 212 ^ 212 ^ stream

[0054] 该方法还可以包括步骤:接收第二阶数据流233i_233w的第一输出组,第二阶数据流的第二输出组至少包括从至少一个输出交换单元231^23^的第一组接收的第二阶数据流,并且将第二阶数据流2331-233w复用成第一复用的输出信号235 (例如波分复用输入信号)。 [0054] The method may further comprise the step of: receiving a second-order output data stream 233i_233w a first group, a second group of the second output order data stream comprises at least a first set of receiving at least one output unit from the switching of the ^ 231 ^ 23 second order data stream, and the second-order data into a first multiplexed stream 2331-233w multiplexed output signal 235 (e.g., wavelength division multiplexed input signal).

[0055] 将意识到,对于波分复用信号,该方法将包括在解复用步骤后的光电转换,以及在复用步骤前的电光转换。 [0055] It will be appreciated, for a WDM signal, the method comprising, after a photoelectric conversion step of demultiplexing and multiplexing optical conversion before step.

[0056] 通过减少上述实施例中描述的交换装置的复杂度,可能引入某一阻塞概率。 [0056] By reducing the complexity of the switching apparatus described in the above-described embodiment, it may introduce a certain blocking probability. 为了补偿这一阻塞概率,本发明的另一个方面包括用于处理阻塞概率或者减少阻塞机率的一个或多个手段。 To compensate for the blocking probability, another aspect of the present invention comprises a process for reducing blocking probabilities or probability of one or more of the blocking means. 这些手段可以单独或者一起使用。 These methods may be used alone or together.

[0057] 根据一个实施例,能够控制输出交换单元231^23^的任意一个组,使得如果输出交换单元231^23^的组中的一个输出端口阻塞,则能够使用来自相同输出交换单元或者输出交换单元231^23^的那个组中的另一个输出交换单元的另一个输出端口。 [0057] According to one output port blocking group to one embodiment, it is possible to control the output switching unit 231 ^ 23 ^ of any group, such that if the output switching unit 231 ^ 23 ^ in, it is possible to use the exchange unit from the same output, or output another output port of the other switching exchange unit that sets an output unit 231 ^ 23 ^ in.

[0058] 以这种方式,通过“集中合并”(“pooling”)在每条输出光纤(其为整个设备的输出端口)的整组波分复用信号,能够获得低阻塞概率。 [0058] In this manner, by "combined concentration" ( "Pooling") in each output fiber (output port of which the entire device) of the entire set of wavelength division multiplexed signals, a low blocking probability can be obtained. 因此交换功能能够设置为点到组交换机,使得为了避免阻塞,能够使用在给定输出光纤上可用的任意波长来避免阻塞。 Switching function can be provided so as to set the switch point, in order to avoid such blocking, the output can be used in any given wavelength of the optical fiber available to avoid blocking. 例如,如果子流必须经0ΤΝ交换以及放置在输出交换单元231x的给定输出端口上,但是朝向输出交换单元231x的相关输出端口的特定路径阻塞,那么能够使用输出交换单元231x的另一个端口。 For example, if the sub-stream to be exchanged via 0ΤΝ and placing in the output switching unit 231x on a given output port, but the particular path towards the output switching unit 231x associated output port blocked, the output port can be exchanged with another unit of 231x. 同样地,如果子流必须经0ΤΝ交换以及放置在输出交换单元231x的给定输出端口上,但是朝向输出交换单元231x的相关输出端口阻塞,那么能够使用来自输出交换单元231r231H的组中的另一个输出交换单元231γ的另一个端口,其连接到不同的波长,假设波长复用到同一输出光纤。 Likewise, if the sub-stream to be exchanged via 0ΤΝ and placing in the output switching unit 231x for a given output port, the output port block toward the correlation output switching unit 231x, then another set can be used an output from the switching unit in 231r231H another output port 231γ switching unit, which is connected to a different wavelength, assuming the same output wavelength multiplexed optical fiber.

[0059] 因此,图3描述的方法还可以包括步骤:判断输出交换单元231^23^的输出端口是否阻塞,如果是,将第二阶数据流交换到同一输出交换单元的另一个输出端口,或者输出交换单元231^23^的第一组中的另一个输出交换单元的另一个输出端口。 [0059] Thus, the methods described may further comprise the step of FIG. 3: 231 ^ 23 ^ output port determination output switching unit is blocked, and if the second-order switching to another data stream output the same output port of the switching unit, or another output port of the other output switching unit 231 in the first group of ^ 23 ^ exchange unit.

[0060] 因此,根据本发明的另一个方面,例如,控制系统能够调整包含在第二阶数据流中的第一阶数据流,使得由交换装置以有组织的方式接收该数据流,所述方式能更好地适合交换装置使用。 [0060] Thus, according to another aspect of the invention, e.g., the control system can adjust the data stream comprises a first stage in a second-order data stream, such that the data stream received by the switching means in an organized manner, the embodiment is better suited for switching devices. 换句话说,为了改进(或减少)阻塞概率,能够调整控制面来控制怎样在第二阶数据流中包含第一阶数据流。 In other words, in order to improve (or reduce) the blocking probability, the control plane can be adjusted to control how the data stream comprises a first-order second-order data stream. 例如,能够控制路径计算引擎(PCE)来施加一些约束。 For example, it is possible to control the path computation engine (PCE) to impose some constraints. 以这种方式,配置PCE以寻找考虑此类标准的用于流和子流的路由。 In this manner, the routing to find the PCE configuration standard for considering such stream and the sub stream.

[0061] 根据一个实施例,能够使用一个或多个以下方式来减少阻塞概率: [0061] According to one embodiment, it is possible to use one or more of the following ways to reduce the blocking probability:

[0062] 一一控制系统、控制面或控制装置可以配置为将业务流分离为第一和第二类别:需要OTN交换的低阶子流能够在某一高阶流中一起复用,而不需要OTN交换的子流能够分组和复用在不同的高阶流中。 [0062] eleven control system, or the control plane controlling means may be configured to separate traffic flows of the first and second categories: low-level sub-streams need to exchange the OTN can be multiplexed together in a higher order stream, without OTN requires substream can be exchanged packets and multiplexed with different higher order streams. 这具有在高阶流中优化对于OTN交换可用的带宽的优点。 This has the advantage that optimization of higher order stream available for exchange OTN bandwidth.

[0063] 一一控制系统、控制面或者控制装置可以配置为在高阶流中留下一些剩余可用带宽以便交换低阶流。 [0063] eleven control system, or the control plane controlling means may be configured to leave some of the remaining available bandwidth in exchange for low order higher order stream flow. 仿真结果显示出,通过在高阶流中为交换低阶流留下大约40%的剩余可用带宽,可以达到低至10_6的阻塞概率。 The simulation results show that, by leaving about 40% of the remaining available bandwidth in the higher-order exchange lower order stream flow, low blocking probability can be achieved in 10_6.

[0064] 图5描述了上述实施例中描述的用于控制交换装置的控制装置500。 [0064] Figure 5 depicts a control means for controlling the switching means described in the embodiments above 500. 控制装置500包括:输入接口503,用于接收第二阶数据流和第一阶数据流。 The control device 500 includes: an input interface 503 for receiving a first data stream and a second-order-level data stream. 处理单元505适用于管理第二阶数据流中的第一阶数据流,以便减少交换装置中的阻塞可能性。 The processing unit 505 adapted for managing the second data stream of a first-order-level data stream, in order to reduce the possibility of blocking means exchange. 控制装置500包括输出接口507,用于输出具有重新组织的第一阶数据流的第二阶数据流506。 The control device 500 includes an output interface 507 for outputting a second stage having a first-order data reorganized stream 506 data stream. 由接口503接收的第二阶数据流和第一阶数据流504可接收为独立的数据流,所述数据流然后由处理单元505组织(如上所述),和/或接收为包括第一阶数据流的第二阶数据流,其中第一阶数据流由处理单元505重新组织。 Received by the interface 503 a first data stream and the second-order-level data stream 504 may be received as separate data streams, the data stream is then organized by the processing unit 505 (described above), and / or received as a first stage comprising a second data stream level data stream, wherein the first-order data stream by the processing unit 505 reorganized.

[0065] 在如上所述的实施例中,注意到,形成一个输入交换单元和/或输出交换单元的数据流子集的第二阶数据流的数量可以不同于形成另一个输入交换单元和/或输出交换单元的数据流子集的第二阶数据流的数量。 [0065] In the embodiment described above, it is noted, is formed a switching unit input and / or output data flow a subset of the switching unit number of data streams may be different form another second order input switching unit and / or the number of output switching unit data stream subset of second order data stream.

[0066] 此外,中间交换单元221可以耦合以接收和/或输出至少一个第二阶数据流,其旁路多个输入交换单元和/或输出交换单元。 [0066] Further, the intermediate switching unit 221 may be coupled to receive and / or at least one second stage output data stream and bypass switching a plurality of input units and / or the output switch unit.

[0067] 上述本发明的实施例的优点是提供了集成的WDM-OTN交换机,其具有显著的低复杂度、成本以及功耗。 [0067] The advantages of embodiments of the present invention is to provide an integrated WDM-OTN switches, which have significantly lower complexity, cost and power consumption. 虽然可能引入子流阻塞概率,但是这可通过使用控制面的控制和管理过程而成功地减低。 While sub-stream may be introduced blocking probability, but it can be successfully reduced through the use of control and management control plane.

[0068] 根据现有技术,在所有网段中,完全可访问并且严格非阻塞的具有大量端口的交换结构不是必要的。 [0068] According to the prior art, in all segments, the fully accessible and strictly non-blocking switching fabric having a large number of ports is not necessary. 因此,本发明的实施例通过接受子流阻塞概率的可能性提供了简化的交换装置架构,所述概率可以通过有效地使用控制面降到足够低以在各种应用中使用。 Thus, embodiments of the present invention provides a simplified switching device architecture by the possibility of accepting sub-streams blocking probability, the probability can be reduced by effectively using the control surface is low enough to use in various applications.

[0069] 本发明的上述实施例示出虽然交换架构不保证需要交换的任意子流能够到达期望的交换机输出端口,并且结果是存在阻塞概率,但是能够急剧地降低这样的阻塞概率。 [0069] The above-described embodiments of the present invention is shown, although any switch architecture does not guarantee that the sub-streams need to be exchanged can reach a desired switch output port, and the result is the presence of the blocking probability, it is possible to drastically reduce such blocking probability. 如果当交换机的某一输出端口的某一子流的阻塞发生时,那么能够使用其中有用于传输子流的空间的不同的输出端口。 When the switch is blocked if, when a certain sub stream output port occurs, which can be used for different output ports of the spatial sub-streams. 考虑用于交换的备选输出端口属于同一WDM复用器,其在同一光纤上聚集光信道。 Consider alternative output ports belonging to the same exchange for WDM multiplexer, which aggregates optical channels over the same fiber. 每个特定的子流在某条光纤上沿着某一路径传输,并能够到达正确的装置或节点。 Each particular sub-stream on a transmission optical fiber along a path, and able to reach the correct node or device.

[0070] 为了实现上述交换技术,并且帮助减少WDM/0TN交换机的阻塞性能,本发明的实施例包括智能控制系统,其能够聪明地将子流聚集为高阶流,从而最小化阻塞的概率。 [0070] In order to achieve the above-described switching technology, and helps reduce blocking performance WDM / 0TN switch, embodiments of the present invention includes a intelligent control system that can intelligently gathering the high-order sub-flow stream, thereby minimizing the blocking probability.

[0071] 本发明的实施例具有提供光-电一光(OEO)WDM交换层的紧密集成以及使用同一硬件框架的OTN交换的优点,以便使得硬件合理化,并且因此降低占地面积、成本和功耗。 [0071] Embodiments of the present invention to provide a light having - an electrical switching advantage OTN optical (OEO) tightly integrated WDM exchange layer using the same hardware and the frame so that the rationalization of hardware, and thus to reduce the space, cost and power consumption.

[0072] 因此,对于给定的交换机容量,本发明实施例极大地减少了交换结构的复杂度、端口的数量和互连数量。 [0072] Thus, for a given switch capacity, embodiments of the present invention greatly reduces the complexity of the switch fabric, the number and the number of interconnect ports.

[0073] 应注意到,上述实施例是说明而不是限制本发明,并且本领域技术人员将能够在不背离所附权利要求的范围的情况下设计很多备选的实施例。 [0073] It should be noted, the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able, without departing from the design many alternative embodiments a case where the scope of the appended claims. 词语“包括”不排除在权利要求中列出的那些之外的元件或步骤的存在,“一”不排斥多个,并且单个处理器或其它单元可以实现权利要求中叙述的若干单元的功能。 The word "comprising" does not exclude the presence of elements or steps other than those listed in a claim, "a" does not exclude a plurality, and a single processor or other unit may fulfill the functions of several units recited in the claims. 权利要求中的任意参考标记将不解释为限制它们的范围。 Any reference numerals in the claims shall not be construed as limiting the scope thereof.

Claims (21)

1.一种用于使用分级数据结构交换传输的信息的交换装置,所述分级数据结构至少包括第一和第二阶数据流,所述交换装置包括: 输入级,其包括至少一个输入交换单元; 输出级,其包括至少一个输出交换单元;以及中间级,其耦合在所述输入级和所述输出级之间,所述中间级包括中间交换单元; 其中,所述至少一个输入交换单元和所述至少一个输出交换单元配置为交换包含在第二阶数据流中的第一阶数据流,并且其中所述中间交换单元配置为仅交换第二阶数据流,其中,所述第二阶数据流具有比所述第一阶数据流更高的阶。 A hierarchical data structure used for exchanging transmission information exchange apparatus, said hierarchical data structure comprises at least a first stage and a second data stream, said switching means comprising: an input stage comprising at least one input switching unit ; an output stage, which comprises at least one output switching element; and an intermediate stage coupled between the input stage and the output stage, said intermediate stage includes an intermediate exchange unit; wherein at least one input switching unit and at least one output switching unit configured to exchange data stream comprising a first stage in the second-order data stream, and wherein said intermediate exchange unit configured to exchange only the second-order data stream, wherein said second order data than the first stream having a higher order of order data stream.
2.如权利要求1所述的交换装置,其中: 输入交换单元耦合以接收第二阶数据流的子集并且输出第二阶数据流的相应子集; 所述中间交换单元耦合以从多个输入交换单元的每个输入交换单元接收至少包括第二阶数据流的所述子集的多个第二阶数据流,并且耦合以输出多个第二阶数据流;以及输出交换单元耦合以从所述中间交换单元接收第二阶数据流的子集,并且输出第二阶数据流的对应子集。 2. The switching apparatus according to claim 1, wherein: the input switching unit is coupled to a second subset of the received order data stream and to output a respective subset of the second order data stream; means coupled to said intermediate switching from a plurality of each switching input unit receives the input switching unit comprises at least a subset of said plurality of second order data stream second order data stream, and a plurality of outputs coupled to a second level data stream; and an output coupled to the switching unit the intermediate stage switching unit receives the second subset of data streams, and outputting a corresponding subset of second order data stream.
3.如权利要求2所述的交换装置,还包括: 第一解复用单元,其耦合以接收复用的输入信号,并且配置为将所述复用的输入信号解复用成第二阶数据流的第一输入组,第二阶数据流的所述第一输入组至少形成由至少一个输入交换单元的第一组接收的所述第二阶数据流。 3. The switching apparatus according to claim 2, further comprising: a first demultiplexing means, coupled to receive an input signal multiplexing, and configured to input the multiplexed signal Solutions multiplexed into a second-order a first set of input data stream, the second order set of input data stream is formed a first step at least the second data stream received from a first set of at least one input of the switching unit.
4.如权利要求2或3所述的交换装置,还包括: 复用单元,其耦合以接收第二阶数据流的第一输出组,第二阶数据流的所述第一输出组至少包括从至少一个输出交换单元的第一组接收的所述第二阶数据流; 其中,所述复用单元配置为将第二阶数据流的所述第一输出组复用成复用的输出信号。 4. The switching device of claim 2 or claim 3, further comprising: multiplexing means, coupled to receive a second set of a first output order data stream, the data stream of the second stage comprising at least a first set of output receiving from the first set of at least a second order exchange unit output data stream; wherein the multiplexing unit configured to output a signal of the second output order data stream a first set of multiplexed into multiplexed .
5.如权利要求4所述的交换装置,其中,控制输出交换单元的所述第一组,使得如果输出交换单元的输出端口阻塞,则使用来自同一个输出交换单元的或者输出交换单元的所述第一组中的另一个输出交换单元的另一个端口。 5. The switching apparatus according to claim 4, wherein said switching control unit output a first group, such that if the output of the output port blocking switching unit, or use the same output from the output switching unit of the switching unit the other output of said first set of ports to another switching unit.
6.如前面权利要求中的任一项所述的交换装置,其中,以有组织的方式接收包含在第二阶数据流中的第一阶数据流,适用于交换装置使用。 6. The switching device according to any one of the preceding claims, wherein the received data stream comprises a first stage in a second stage the data stream in an organized manner, using suitable switching means.
7.如前面权利要求中的任一项所述的交换装置,其中,形成一个输入交换单元和/或输出交换单元的数据流子集的第二阶数据流的数量不同于形成另一个输入交换单元和/或输出交换单元的数据流子集的第二阶数据流的数量。 7. The switching device of any one of the preceding claims, wherein the number of second order data stream formed of a switching unit input and / or output data flow a subset of the switching unit differs from the other input switch is formed the second-order unit number of data streams and / or data stream output subset exchange unit.
8.如前面权利要求中的任一项所述的交换装置,其中,所述中间交换单元耦合以接收和/或输出旁路所述多个输入交换单元和/或输出交换单元的至少一个第二阶数据流。 8. at least one of an exchange device according to any of the preceding claims, wherein said switching means coupled to receive the intermediate and / or output path of said plurality of input switching unit and / or the output of the switching unit second-order data stream.
9.如权利要求4-8中任一项所述的交换装置,还包括: 至少一个第二解复用单元,其耦合以接收第二复用输入信号,并且配置为将所述第二复用输入信号解复用成第二阶数据流的第二输入组,第二数据流的所述第二输入组至少形成由至少一个输入交换单元的第二组接收的所述第二阶数据流;以及至少一个第二复用单元,其耦合以接收第二阶数据流的第二输出组,第二阶数据流的所述第二输出组至少包括从至少一个输出交换单元的第二组接收的所述第二阶数据流,其中,所述第二复用单元配置为将第二阶数据流的所述第二输出组复用成第二复用输出信号。 9. A switching device as claimed in any one of claims 4-8, further comprising: at least one second demultiplexing means, coupled to receive the second multiplexed input signal, and configured to convert the second complex multiplexed into a second stage a second set of input signal input data stream with the solution, the second data stream forming a second set of at least a second set of input received by at least one input of the second switching unit level data stream ; and at least a second multiplexing means, coupled to receive the output of a second stage a second set of data flows, the second stage output data stream a second set of at least a second set comprising receiving from the at least one output switching means the second-order data stream, wherein the second multiplexing unit is configured to order said second data stream is multiplexed into a second set of a second output of the multiplexed output signal.
10.如前面权利要求中的任一项所述的交换装置,其中,数据流的所述分级数据结构包括光信道教据单元流ODU流。 10. The switching device of any one of the preceding claims, wherein said hierarchical data structure of an optical channel data stream comprises data units Taoism ODU flow stream.
11.如权利要求10所述的交换装置,其中所述ODU流形成部分波分复用WDM信号。 11. The switching apparatus according to claim 10, wherein the wavelength division multiplexed WDM signal stream portion ODU formed.
12.如前面权利要求中的任一项所述的交换装置,其中,所述输入交换单元或所述输出交换单元包括相同数量的输入和输出端口。 12. A switching apparatus according to any one of the preceding claims, wherein the input switching unit or the output switch unit comprises the same number of input and output ports.
13.一种用于使用分级数据结构交换传输的信息的交换装置中的方法,所述分级数据结构至少包括第一和第二阶数据流,所述方法包括步骤: 在所述交换装置的输入级交换包含在第二阶数据流中的第一阶数据流,所述输入级包括至少一个输入交换单兀; 在所述交换装置的中间级仅交换第二阶数据流,所述中间级包括中间交换单元;以及在所述交换装置的输出级交换包含在第二阶数据流中的第一阶数据流,所述输出级包括至少一个输出交换单元。 13. A method for using a hierarchical data structure transmitted information exchange means exchange, said hierarchical data structure comprises at least a data stream, the method comprising the steps of first and second stage: the input of the switching means in a second stage switch comprises a first order data stream level data stream, said input stage comprising at least one single-input switching Wu; at an intermediate stage of said switching means switching only the second-order data stream, said intermediate stage comprising intermediate switching element; and an output stage switch in said switching means comprises a first-order data stream in a second-order data stream, the output stage comprises at least one output switching unit.
14.如权利要求13所述的方法,还包括以下步骤: 在由所述中间交换单元交换之前,由所述至少一个输入交换单元的相应输入交换单元将所述第二阶数据流划分为第二阶数据流的至少一个子集;以及将从所述中间交换单元接收的所述第二阶数据流划分为第二阶数据流的至少一个子集用于所述至少一个输出交换单元交换。 14. The method according to claim 13, further comprising the step of: prior to the exchange by the exchange of the intermediate unit, at least one input by the input switching means switching a respective unit the second data stream into a first-order at least a second order data stream subset; and said switching means for receiving from said second intermediate level data stream into at least a subset of the second order for the at least one output data stream of the exchange unit exchanges.
15.如权利要求14所述的方法,还包括以下步骤: 接收第一复用输入信号;以及将所述第一复用输入信号解复用为第二阶数据流的第一输入组,第二阶数据流的所述第一输入组至少形成由至少一个输入交换单元的第一组交换的所述第二阶数据流。 15. The method according to claim 14, further comprising the steps of: receiving a first multiplexed input signal; and the first input multiplexed signal demultiplexing the second step a first set of input data stream, the first the second order input data stream a first set of forming at least a second data stream of the first stage by at least one group switch input of the switching unit.
16.如权利要求14或15所述的方法,还包括以下步骤: 接收第二阶数据流的第一输出组,第二阶教据流的所述第二输出组至少包括从至少一个输出交换单元的第一组接收的所述第二阶数据流;以及将第二阶数据流的所述第二输出组复用成第一复用输出信号。 16. The method of claim 14 or claim 15, further comprising the steps of: receiving a second set of the first output order data stream, a second stage the teachings data stream comprises at least a second set of output at least one output from the switch receiving a first set of said second order data flow unit; and the second step a second data stream multiplexed into a first set of output multiplexed output signal.
17.如权利要求16所述的方法,还包括以下步骤: 确定所述输出交换单元的输出端口是否阻塞,并且,如果是; 将第二阶数据流交换到同一个输出交换单元的另一个输出端口或者输出交换单元的所述第一组中的另一个输出交换单元的输出端口。 17. The method according to claim 16, further comprising the step of: determining whether said output port blocking switching unit, and, if so; the second order exchange data stream output to another output of the same switching unit the output port switching unit or the output of another output port of a first group of switching units.
18.如权利要求14-17中任一项所述的方法,其中,数据流的所述分级数据结构包括光信道教据单元流ODU流。 18. The method according to any one of claims 14-17 wherein said hierarchical data structure of an optical channel data stream comprises data units Taoism ODU flow stream.
19.如权利要求18所述的方法,其中,所述ODU流形成部分波分复用WDM信号。 19. The method as claimed in claim 18, wherein the wavelength division multiplexed WDM signal stream portion ODU formed.
20.一种用于控制如权利要求1-11中任一项所述的交换装置的控制装置,其中所述控制装置包括: 输入接口,用于接收第二阶数据流和第一阶数据流; 处理单元,适用于组织第二阶数据流内的第一阶数据流以便减少所述交换装置中阻塞的可能性;以及输出接口,用于输出其中具有组织的第一阶数据流的第二阶数据流。 20. A control apparatus for controlling a switching device according to any one of claims 1 to 11, wherein said control means comprises: an input interface for receiving order data stream and a second data stream of a first stage ; processing unit adapted to organize the order of the second data stream of a first-order data stream in order to reduce the possibility of blocking the switching device; and an output interface for outputting a first stage having a second tissue data stream order data stream.
21.如权利要求20所述的控制装置,其中,所述处理单元适用于将数据流组织成下面的一个或多个: 包括需要交换的第一阶数据流的第二阶数据流; 包括不需要交换的第一阶数据流的第二阶数据流; 具有至少一些空间能力以用于交换第一阶数据流的第二阶数据流。 21. The control device according to claim 20, wherein the processing unit is adapted to the data stream organized into one or more of the following: a first data stream comprising a second-order-level data stream needs to be exchanged; includes not the first-order second-order data need to exchange data stream stream; having a capacity of at least some space for exchanging a first stage the second stage of the data streams.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1638316A (en) * 2003-12-24 2005-07-13 阿尔卡特公司 Group switching method and apparatus for dense wavelength division multiplexing optical networks
EP1971050A1 (en) * 2005-12-07 2008-09-17 Huawei Technologies Co., Ltd. An optical transport node construction device and service dispatch method
EP2037604A1 (en) * 2007-09-13 2009-03-18 Huawei Technologies Co., Ltd. Method and apparatus for synchronous cross-connect switching in optical transport network
CN101742363A (en) * 2008-11-20 2010-06-16 华为技术有限公司 Method and device for optical switching

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1638316A (en) * 2003-12-24 2005-07-13 阿尔卡特公司 Group switching method and apparatus for dense wavelength division multiplexing optical networks
EP1971050A1 (en) * 2005-12-07 2008-09-17 Huawei Technologies Co., Ltd. An optical transport node construction device and service dispatch method
EP2037604A1 (en) * 2007-09-13 2009-03-18 Huawei Technologies Co., Ltd. Method and apparatus for synchronous cross-connect switching in optical transport network
CN101742363A (en) * 2008-11-20 2010-06-16 华为技术有限公司 Method and device for optical switching

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