WO2009152729A1 - 多协议交换网的信号处理方法及装置 - Google Patents

多协议交换网的信号处理方法及装置 Download PDF

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Publication number
WO2009152729A1
WO2009152729A1 PCT/CN2009/072111 CN2009072111W WO2009152729A1 WO 2009152729 A1 WO2009152729 A1 WO 2009152729A1 CN 2009072111 W CN2009072111 W CN 2009072111W WO 2009152729 A1 WO2009152729 A1 WO 2009152729A1
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Prior art keywords
data
packet
switching network
stm
sub
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English (en)
French (fr)
Inventor
万怀雪
李大为
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to EP09765368A priority Critical patent/EP2249539A4/en
Publication of WO2009152729A1 publication Critical patent/WO2009152729A1/zh
Priority to US12/888,914 priority patent/US20110013635A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/54—Store-and-forward switching systems 
    • H04L12/56—Packet switching systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/60—Software-defined switches
    • H04L49/602—Multilayer or multiprotocol switching, e.g. IP switching
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/70—Virtual switches
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13293—TASI, irregular time division, burst switching
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13296—Packet switching, X.25, frame relay
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13392—Channels assigned according to rules

Definitions

  • the present invention relates to the field of network communications, and in particular, to a signal processing method and apparatus for a multi-protocol switching network
  • TDM Multiplexed, TDM
  • Network compatibility is a common concern in the industry. Because TDM is usually a circuit-switched interleaving method, and packet service is a method of switching between consecutive messages or cell CELL.
  • the prior art provides a signal processing method for a multi-protocol switching network by using a synchronous digital system (Synchronous Digital).
  • MSTP multi-service transmission platform
  • Step 11 MSTP receives packet messages in the network
  • MSTP passes the received packet message through the Generic Framing Protocol (Generic Framing).
  • GFP is encapsulated into the SDH virtual container (Virtual Container, VC);
  • the granularity in the transmission process is the size of the VC in the S DH.
  • VC12 provides about 2M of service bandwidth particles, so the data transmission in the network needs to be VC.
  • the size limitation makes Ethernet processing inflexible.
  • an embodiment of the present invention provides a signal processing method and apparatus for a multi-protocol switching network, where the data transmission in the network does not need to be limited by the size of the virtual container. , thereby improving the processing flexibility of Ethernet.
  • a specific embodiment of the present invention provides a signal processing method for a multi-protocol switching network, where the method includes: performing unified slice processing on a multiplexed TDM frame and packet message data in units of STM-1. Generating the sub-cell as the basic unit data, and loading the outbound port information of the switching network exchange matrix into the header of the sub-cell;
  • the exchanged data After exchanging the data of the sub-cell as a basic unit, the exchanged data is inversely sliced into TDM frames and packetized message data and then transmitted.
  • Embodiments of the present invention also provide a signal processing apparatus for a multi-protocol switching network, where the apparatus includes
  • a slice processing unit configured to perform unified slice processing on the multiplexed TDM frame and the packet message data in units of STM-1 into data in which the sub-cell is a basic unit;
  • a loading unit configured to load the outbound port information of the switching network exchange matrix in the head of the sub-cell
  • an exchange unit configured to exchange data of the sub-cell as a basic unit
  • the technical solution of the embodiment of the present invention performs unified slicing processing on data of a sub-cell as a unit by using a TDM frame and packet packet data in units of STM-1.
  • the TDM frame and the packet message are exchanged with the sub-cell as the basic unit, so that the data transmission in the network does not need to be limited by the size of the virtual container, thereby improving network processing flexibility.
  • FIG. 1 is a flowchart of a signal processing method of a multi-protocol switching network according to the prior art
  • FIG. 2 is a flowchart of a signal processing method of a multi-protocol switching network according to Embodiment 1 of the present invention
  • FIG. 3 is a flowchart of a signal processing method of a multi-protocol switching network according to Embodiment 2 of the present invention.
  • FIG. 5 is a structural diagram of a signal processing apparatus of a multi-protocol switching network according to an embodiment of the present invention. [28] Mode for carrying out the invention
  • An embodiment of the present invention provides a method for signal processing of a multi-protocol switching network, which performs unified slicing processing of TDM frames and packet message data in units of STM-1 to form sub-cells.
  • the data of the unit is exchanged with the data of the sub-cell as the basic unit, and then subjected to the reverse slicing processing to the TDM and the packet message data in units of S TM-1 and then transmitted. Since the method is exchanged with the sub-cell as a basic unit, the data transmission in the network does not need to be limited by the size of the virtual container, thereby improving the processing flexibility of the network, and the method can simultaneously identify the TDM frame and the packet.
  • the message is processed, which is more suitable for the network from TDM to ALL.
  • IP evolution and in the process of service evolution, since the switching device can support TDM and packet messages at the same time, there is no need to change the switching network, thereby saving costs to a certain extent.
  • the present invention provides an embodiment.
  • the embodiment provides a method for processing a signal of a multi-protocol switching network.
  • the method provided in this embodiment is as shown in FIG. 2, and includes the following steps:
  • Step 21 Perform unified slicing of TDM frames and packet message data in units of STM-1 into data with sub-cells as basic units;
  • the length of the sub-cell is generally selected from 16 bytes to 128 bytes.
  • the sub-cell contains two parts: a cell header and a cell static load.
  • the sub-cell header generally contains a type (identifying unicast or multicast). Port information or multicast index information, as well as some other extended information. The slicing process in this step is prior art and will not be mentioned here.
  • Step 22 Loading the outbound port information of the switching network switching matrix into the header information of the sub-cell;
  • Method A In the case of a TDM frame, the outbound port information of the switching network switching matrix is obtained by using the service switching relationship of the TDM frame, and the outbound port information of the obtained switching network switching matrix is loaded in the sub-cell. Within the header information.
  • the following is a practical example to illustrate the specific steps of implementing Method A. Assume that the first VC4 of the STM-16 of the Switching Network A channel is the first VC4 of the STM-4 of the D channel, assuming the first of the STM-16 of the A channel.
  • the virtual port of the VC4 is Al
  • the virtual port of the first VC4 of the D channel STM-4 is D1
  • the service exchange relationship of the TDM virtual port A1 to D1 is generated. According to the service switching relationship, D1 is obtained as the egress port, and D1 is obtained. Port information, and the port information of the D1 is loaded in the header information of the sub-cell.
  • Method B In the case of packet packet data, the outbound port information of the switching fabric of the switching network is obtained according to the header information of the packet packet, and then the outbound port information is loaded in the header information of the subcell. .
  • the specific method for implementing the method B may be: if the length of the packet cell entered by the switching network interface is the same as the length of the minimum switching unit/sub-cell of the switching network, the structure of the cell is unchanged, if the switching network interface The length of the packet cell is greater than the length of the minimum switching unit/sub-cell of the switching network, and the packet cell needs to be sliced into the data with the sub-cell as the minimum switching unit, and the information of the packet cell header is also the same. Loaded into the header information of the corresponding child cell.
  • Step 23 Exchange data in units of sub-cells.
  • the method for implementing this step may be that the sub-cell exchange mode is a general-purpose technology, that is, extracting the outbound port information in the sub-cell header, and the packet message needs to be arbitrated after processing, and the exchange is formed according to the egress port information.
  • Step 231 In the case of packet packet data, arbitration and/or backpressure processing is performed on the data in units of sub-cells according to the congestion status of the egress port of the switching network.
  • step 231 the outbound port of the crossover matrix of the switching network can ensure that the data that has been sent to the crossover matrix of the switching network is normally exchanged in the case of congestion, thereby avoiding excessive congestion of the outbound port and causing the entire switching network to cross.
  • Matrix ⁇ The arbitration and back pressure processing in this step are all prior art contents, and will not be mentioned here.
  • Step 24 The reversed data is inversely sliced into TDM frames and packet message data in units of STM-1 and then transmitted.
  • the embodiment of the present invention further provides another embodiment: a method for processing a signal of a multi-protocol switching network provided by this embodiment.
  • the technical scenario of this embodiment is that the operation subject of the embodiment is a multi-protocol exchange.
  • the signal processing device of the network, the original TDM frame received by the device is a TDM frame in units of STM-4.
  • the method provided in this embodiment is as shown in FIG. 3, and includes the following operations:
  • Step 31 The signal processing apparatus of the multi-protocol switching network receives the TDM frame and the packet message data in units of STM-4;
  • Step 32 The signal processing apparatus of the multi-protocol switching network terminates the SDH regenerator section overhead and the multiplex section overhead of the TDM frame in units of STM-4.
  • Step 33 The signal processing device of the multi-protocol switching network interleaves the TDM frame in units of STM-4 into
  • STM-1 is the TDM frame of the unit
  • the implementation method of the step may be that the STM-4 is interleaved in a byte manner, and the interleaving process is actually a virtual port processing of the TDM, as shown in FIG. 4, which is a switching network channel/port.
  • the basic mapping relationship between the STM-4 service and the four STM-1 virtual ports can be interleaved into four STM-1 TDM frames according to the basic mapping relationship shown in FIG.
  • the original TDM frame can also be a TDM frame in units of STM-16, when the original
  • the interleaving process is to interleave the STM-16 into 16 STM-1 virtual ports, and so on. 64 STM-1 virtual ports.
  • Step 34 The signal processing apparatus of the multi-protocol switching network performs unified slicing of TDM frames and packet messages in units of STM-1 into data in units of sub-cells;
  • the sub-cell in this step is the most basic unit, and the length of the sub-cell information is determined by the configuration information.
  • the specific embodiment of the present invention does not limit the length of the sub-cell information.
  • Step 35 The signal processing device of the multi-protocol switching network loads the outbound port information of the switching matrix in the header information of the sub-cell;
  • Step 36 The signal processing device of the multi-protocol switching network exchanges data in units of sub-cells; [57] Step 37: The signal processing device of the multi-protocol switching network performs reverse-slice processing on the exchanged data.
  • STM-1 is a unit TDM frame and packet message
  • Step 38 The signal processing apparatus of the multi-protocol switching network performs inverse de-interleaving of the TDM frames in units of STM-1 to form a TDM frame in units of STM-4;
  • Step 39 The signal processing device of the multi-protocol switching network will transmit the TDM frame of the STM-4 and the packet message.
  • the method provided by the embodiment of the present invention performs unified slice processing on TDM frames and packet message data in units of STM-1 to form data in which sub-cells are basic units, and uses sub-cells as basic units. After the data is exchanged, the anti-slice processing is performed into TDM and packet message data in units of STM-4. Send.
  • the method is based on the sub-cell exchange, so that the data transmission of the network does not need to be limited by the size of the virtual container, thereby improving the processing flexibility of the network, and the method can simultaneously identify the TDM frame and the packet message. Processing is more suitable for the network to evolve from TDM to ALL IP.
  • An embodiment of the present invention further provides a signal processing apparatus for a multi-protocol switching network.
  • the method includes: a slice processing unit 51, configured to use a TDM frame and a packet message in units of STM-1.
  • the data is uniformly sliced into data in units of sub-cells;
  • a loading unit 52 is configured to load the outbound port information of the switching network exchange matrix into the header of the sub-cell; and
  • the switching unit 53 is configured to The sub-cells are exchanged for unit data; the anti-slice processing unit 54,
  • the loading unit 52 may include: a packet loading module 521, configured to obtain, according to the header information of the packet packet, the outbound port information of the switching network exchange matrix when the data is a packet packet, and The outbound port information of the switching network exchange matrix is loaded in the header of the sub-cell; the TDM loading module 522 is configured to: according to the TDM frame, when the data is a TDM frame in units of STM-1 The exchange relationship obtains the outbound port information of the switching network switching matrix, and loads the outbound port information of the switching network switching matrix into the head of the sub-cell.
  • the above device may also have one or more of the following configurations:
  • the foregoing apparatus may further include: an arbitration processing unit 55, configured to: in the case of packet packet data, according to the congestion status of the egress port of the crossover matrix of the switching network, the sub-cell is used as a unit The data is subjected to arbitration processing; and/or the back pressure processing unit 58 is configured to, in the case of packet packet data, the data in units of sub-cells according to the congestion status of the egress port of the cross-interval matrix of the switching network. Perform back pressure treatment.
  • an arbitration processing unit 55 configured to: in the case of packet packet data, according to the congestion status of the egress port of the crossover matrix of the switching network, the sub-cell is used as a unit The data is subjected to arbitration processing
  • the back pressure processing unit 58 is configured to, in the case of packet packet data, the data in units of sub-cells according to the congestion status of the egress port of the cross-interval matrix of the switching network. Perform back pressure treatment.
  • the above apparatus may further include a deinterleaving unit 56 for interleaving the TDM frame into a TDM frame in units of STM-1.
  • a deinterleaving unit 56 for interleaving the TDM frame into a TDM frame in units of STM-1.
  • the above device may further include:
  • the terminating unit 57 is configured to: before the de-interleaving unit performs de-interleaving, and identify that the received signal is a split-multiplexed TDM frame, the regenerative section overhead of the synchronous digital system And multiplex section overhead [68]
  • the apparatus according to the embodiment of the present invention is configured to perform a unified slice processing on a TDM frame and packet message data in units of STM-1 by using a slice processing unit 51 to form data in which a sub-cell is a basic unit.
  • the loading unit 52 loads the outbound port information of the switching network switching matrix into the header of the sub-cell, and exchanges the data with the sub-cell as the basic unit through the switching unit 53 , and the anti-slice processing unit 54 exchanges the information.
  • the data is inversely sliced into TDM and packet message data in units of STM-1 and transmitted. Since the device is exchanged by using the sub-cell as a basic unit, the data transmission in the network does not need to be limited by the size of the virtual container, thereby improving the processing flexibility of the network, and the method can simultaneously identify the T DM frame and the packet.
  • the packet is processed, which is more suitable for the network to evolve from TDM to ALL IP.
  • the technical solution provided by the specific embodiments of the present invention has the advantages of improving the processing flexibility of the network, and is more suitable for the network to evolve from TDM to ALL IP.

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  • Computer Networks & Wireless Communication (AREA)
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Description

说明书 多协议交换网的信号处理方法及装置
[I] 本申请要求于 2008年 6月 16日提交中国专利局、 申请号为 200810115042.4、 发明 名称为"多协议交换网的信号处理方法及装置"的中国专利申请的优先权， 其全部 内容通过引用结合在本申请中。
[2] 技术领域
[3] 本发明涉及网络通信领域， 尤其涉及一种多协议交换网的信号处理方法及装置
[4] 发明背景
[5] 现代通信网络呈现宽带化和分组化趋势， 为了保护运营商的投资， 下一代包分 组网络如何对传统吋分复用 （Time Division
Multiplexed, TDM) 网络进行兼容， 成为业界普遍关注的问题。 因为通常 TDM 是釆用间插的电路交换方式， 而分组业务是釆用连续的报文或单元 CELL进行交 换的方式。
[6] 为了让包分组网络和 TDM网络保持兼容， 现有技术提供了一种多协议交换网的 信号处理方法， 该方法是通过以同步数字体系（Synchronous Digital
Hierarchy, SDH)设备发展形成的多业务传送平台 (Multi-Service Transmission Platform, MSTP) 设备完成的， 由于 MSTP是以 TDM为核心的处理结构， 这里只 需要说明分组报文的数据如何处理即可， 该方法如图 1所示， 包括如下步骤：
[7] 步骤 11、 MSTP接收网络中的分组报文；
[8] 步骤 12、 MSTP将接收的分组报文通过通用成帧规程协议 （Generic Framing
Procedure, GFP) 封装到 SDH的虚容器 (Virtual Container, VC) ；
[9] 步骤 13、 MSTP将虚容器传送。
[10] 在实现本发明的过程中， 发明人发现现有技术所述的方法存在如下问题：
[I I] 由于传送过程是通过 SDH中的 VC进行传送的， 所以传送过程中的颗粒度就是 S DH中 VC的大小， 例如 VC12约提供 2M的业务带宽颗粒， 所以网络中的数据传输 需要受到 VC大小的限制， 使得以太网的处理缺乏灵活性。 [12] 发明内容
[13] 鉴于上述现有技术所存在的问题， 本发明实施方式提供一种多协议交换网的信 号处理方法及装置，所述方法和装置使得网络中的数据传输不需要受到虚容器大 小的限制， 进而提高以太网的处理灵活性。
[14] 本发明的具体实施方式提供一种多协议交换网的信号处理方法， 所述方法包括 ： 将以 STM-1为单元的吋分复用 TDM帧和分组报文数据进行统一的切片处理成 以子信元为基本单元的数据， 并将交换网交换距阵的出端口信息加载在所述子 信元的头部；
[15] 将所述子信元为基本单元的数据进行交换后， 将交换后的数据进行反切片处理 成 TDM帧和分组报文数据后发送。
[16] 本发明具体实施方式还提供一种多协议交换网的信号处理装置， 所述装置包括
[17] 切片处理单元， 用于将以 STM-1为单元的吋分复用 TDM帧和分组报文数据进行 统一的切片处理成以子信元为基本单元的数据；
[18] 加载单元， 用于将交换网交换距阵的出端口信息加载在所述子信元的头部；
[19] 交换单元， 用于将所述子信元为基本单元的数据进行交换；
[20] 反切片处理单元，
用于将交换后的数据进行反切片处理成 TDM帧和分组报文数据后发送。
[21] 由上述所提供的技术方案可以看出， 本发明实施例的技术方案通过以 STM-1为 单元的 TDM帧和分组报文数据进行统一切片处理成以子信元为单元的数据， 使 得 TDM帧和分组报文均以子信元为基本单元进行交换， 从而使得网络中的数据 传输不需要受到虚容器大小的限制， 进而提高网络处理灵活性。
[22] 附图简要说明
[23] 图 1为现有技术所述的多协议交换网的信号处理方法的流程图；
[24] 图 2为本发明实施 1所述的多协议交换网的信号处理方法的流程图；
[25] 图 3为本发明实施例 2所述的多协议交换网的信号处理方法的流程图；
[26] 图 4为本发明实施例 1中的 STM-4到 4个 STM-1的基本映射关系图；
[27] 图 5为本发明具体实施方式所述的多协议交换网的信号处理装置的结构图。 [28] 实施本发明的方式
[29] 本发明实施方式提供了一种多协议交换网的信号处理的方法， 该方法将以 STM -1为单位的 TDM帧和分组报文数据进行统一的切片处理形成以子信元为基本单 元的数据， 将以子信元为基本单元的数据进行交换后， 再进行反切片处理成以 S TM-1为单位的 TDM和分组报文数据后发送。 该方法由于是以子信元为基本单元 进行交换的， 所以使得网络中的数据传输不需要受到虚容器大小的限制， 进而 提高网络的处理灵活性， 并且该方法可以同吋对 TDM帧和分组报文进行处理， 更为适合网络由 TDM向 ALL
IP演进， 并且在业务演进的过程中， 由于该交换设备可以同吋支持 TDM和分组 报文， 所以不需要改换交换网， 从而在一定程度上节约了成本。
[30] 为更好的描述本发明的具体实施方式， 现结合附图对本发明具体实施方式进行 具体的说明。
[31] 本发明提供一实施例， 本实施例提供一种多协议交换网的信号处理的方法， 本 实施例提供的方法如图 2所示， 包括如下步骤：
[32] 步骤 21、 将以 STM-1为单元的 TDM帧和分组报文数据进行统一的切片处理成以 子信元为基本单元的数据；
[33] 该子信元的长度一般选取 16字节到 128字节， 子信元包含信元头和信元静荷两 部分， 子信元头一般包含类型 （标识单播还是多播） ， 出端口信息或多播索引 信息， 以及一些其它扩展信息。 该步骤中的切片处理为现有技术， 这里就不再 赞述。
[34] 步骤 22、 将交换网交换距阵的出端口信息加载在该子信元的头信息内；
[35] 实现该步骤的方法可以为：
[36] 方法 A: 在为 TDM帧的情况下， 以该 TDM帧的业务交换关系获取交换网交换距 阵的出端口信息， 将获取的交换网交换矩阵的出端口信息加载在子信元的头信 息内。 下面以一个实际的例子来说明实现方法 A的具体步骤， 假设交换网 A通道 的 STM- 16的第一个 VC4到 D通道 STM-4第一个 VC4， 假设 A通道的 STM- 16的第一 个 VC4的虚端口为 Al， D通道 STM-4第一个 VC4的虚端口为 Dl， 则生成 TDM虚 端口 A1到 D1的业务交换关系， 根据该业务交换关系获取 D1为出端口， 并获取 D1 的端口信息， 并将该 D1的端口信息加载在子信元的头信息内。
[37] 方法 B: 在为分组报文数据的情况下， 根据该分组报文的头部信息获取交换网 交换矩阵的出端口信息， 然后将该出端口信息加载在子信元的头信息内。
[38] 实现该方法 B的具体方法可以为， 如果交换网接口进入的分组信元的长度与交 换网的最小交换单元 /子信元的长度相同则信元的结构不变， 如果交换网接口的 分组信元的长度大于交换网的最小交换单元 /子信元的长度， 则需要对分组信元 切片成以子信元为最小交换单元的数据， 同吋将该报文信元头相关信息加载到 对应的子信元的头信息内。
[39] 步骤 23、 将以子信元为单元的数据进行交换。
[40] 实现该步骤的方法可以为， 子信元交换的方式是一种通用的技术， 就是提取子 信元头中的出端口信息， 分组报文需要仲裁处理后， 根据出端口信息形成交换 网 Crossbar配置信息， 进行的交换活动；
[41] 在进行该步骤之前， 还可以选择进行步骤 231 ;
[42] 步骤 231、 当为分组报文数据的情况下， 根据交换网交叉距阵的出端口拥塞状 态， 对以子信元为单位的数据进行仲裁和 /或反压处理。
[43] 该步骤 231能使交换网的交叉矩阵的出端口在出现拥塞的情况下， 保证已发送 到交换网交叉矩阵的数据进行正常的交换， 避免了出端口过度拥塞而造成整个 交换网交叉矩阵瘫痪。 该步骤中的仲裁、 反压处理均为现有技术的内容， 这里 就不再赞述。
[44] 步骤 24、 将交换后的数据进行反切片处理成以 STM-1为单元的 TDM帧和分组报 文数据后发送。
[45] 该步骤中的反切片处理为现有技术， 这里就不再赞述。
[46] 本发明具体实施方式还提供另一实施例： 本实施例提供的一种多协议交换网的 信号处理的方法， 本实施例的技术场景为， 本实施例的操作主体为多协议交换 网的信号处理装置， 本装置接收到的原始 TDM帧为以 STM-4为单元的 TDM帧。 本实施例提供的方法如图 3所示， 包括以下操作：
[47] 步骤 31、 多协议交换网的信号处理装置接收以 STM-4为单元的 TDM帧和分组报 文数据； [48] 步骤 32、 多协议交换网的信号处理装置将以 STM-4为单元的 TDM帧的 SDH再生 段开销和复用段开销终结；
[49] 步骤 33、 多协议交换网的信号处理装置将以 STM-4为单元的 TDM帧解间插为以
STM-1为单元的 TDM帧；
[50] 该步骤的实现方法可以为， 将 STM-4按字节方式进行解间插， 解间插的过程实 际就是 TDM的虚端口处理， 如图 4所示， 为一个交换网通道 /端口 STM-4业务到 4 个 STM-1虚端口的基本映射关系， 根据图 4所示的基本映射关系可以将 1个 STM-4 的 TDM帧解间插为 4个 STM-1的 TDM帧。
[51] 在实际情况中， 原始的 TDM帧也可以为以 STM-16为单元的 TDM帧， 当原始的
TDM帧为以 STM-16为单元的 TDM帧的情况下， 其解间插的过程为， 将 STM-16 解间插为 16个 STM-1虚端口， 以此类推 STM-64解间插为 64个 STM-1虚端口。
[52] 步骤 34、 多协议交换网的信号处理装置将以 STM-1为单元的 TDM帧和分组报文 进行统一切片处理成以子信元为单元的数据；
[53] 该步骤中的子信元为最基本的单元， 且该子信元信息的长度是由配置信息决定 的， 本发明具体实施方式并不局限该子信元信息的长度。
[54] 步骤 35、 多协议交换网的信号处理装置将交换矩阵的出端口信息加载在子信元 的头部信息内；
[55] 该步骤中的将交换矩阵的出口端信息加载在子信元头部信息内的具体方法已在 一实施例中具体说明， 这里就不再赞述。
[56] 步骤 36、 多协议交换网的信号处理装置将以子信元为单元的数据进行交换； [57] 步骤 37、 多协议交换网的信号处理装置将交换后的数据进行反切片处理形成以
STM- 1为单元的 TDM帧和分组报文；
[58] 步骤 38、 多协议交换网的信号处理装置将以 STM-1为单元的 TDM帧进行反解间 插， 形成以 STM-4为单元的 TDM帧；
[59] 步骤 39、 多协议交换网的信号处理装置将以 STM-4的 TDM帧和分组报文发送。
[60] 本发明实施方式提供的方法通过以 STM-1为单位的 TDM帧和分组报文数据进行 统一的切片处理形成以子信元为基本单元的数据， 将以子信元为基本单元的数 据进行交换后， 再进行反切片处理成以 STM-4为单位的 TDM和分组报文数据后 发送。 方法由于是以子信元为基本单元进行交换的， 所以使得网络的数据传输 不需要受到虚容器大小的限制， 进而提高网络的处理灵活性， 并且该方法可以 同吋对 TDM帧和分组报文进行处理， 更为适合网络由 TDM向 ALL IP演进。
[61] 本发明的实施方式还提供一种多协议交换网的信号处理装置， 如图 5所示， 包 括： 切片处理单元 51， 用于将以 STM-1为单元的 TDM帧和分组报文数据进行统 一的切片处理成以子信元为单元的数据； 加载单元 52， 用于将交换网交换距阵 的出端口信息加载在所述子信元的头部； 交换单元 53， 用于将所述子信元为单 元的数据进行交换； 反切片处理单元 54，
用于将交换后的数据进行反切片处理成以 STM- 1为单元的 TDM帧和分组报文数 据后发送。
[62] 上述所述加载单元 52可以包括： 分组加载模块 521， 用于当数据为分组报文的 情况下， 根据分组报文的头部信息获取交换网交换距阵的出端口信息， 并将所 述交换网交换距阵的出端口信息加载在子信元的头部； TDM加载模块 522， 用于 当数据为以 STM- 1为单元的 TDM帧的情况下， 根据所述 TDM帧的业务交换关系 获取交换网交换距阵的出端口信息， 并将所述交换网交换距阵的出端口信息加 载在子信元的头部。
[63] 上述装置还可以有下述配置中的一种或多种：
[64] 配置 1 : 上述装置还可以包括： 仲裁处理单元 55， 用于当为分组报文数据的情 况下， 根据交换网交叉距阵的出端口拥塞状态， 对所述以子信元为单位的数据 进行仲裁处理； 和 /或反压处理单元 58， 用于当为分组报文数据的情况下， 根据 交换网交叉距阵的出端口拥塞状态， 对所述以子信元为单位的数据进行反压处 理。
[65] 配置 2: 上述装置还可以包括， 解间插单元 56， 用于将 TDM帧解间插为以 STM- 1为单元的 TDM帧。 关于解间插的具体操作方法可以参见本发明具体实施方式方 法实施例的相关描述。
[66] 当上述装置选择配置 2的情况下， 上述装置还可以包括：
[67] 终结单元 57， 用于在所述解间插单元进行解间插之前， 并识别出所述收到的信 号为吋分复用 TDM帧的情况下， 将同步数字体系的再生段开销和复用段开销终 [68] 发明具体实施方式所述的装置， 通过切片处理单元 51用于将以 STM-1为单位的 TDM帧和分组报文数据进行统一的切片处理形成以子信元为基本单元的数据， 加载单元 52将交换网交换距阵的出端口信息加载在所述子信元的头部后， 通过 交换单元 53将以子信元为基本单元的数据进行交换， 反切片处理单元 54将交换 后的数据进行反切片处理成以 STM-1为单位的 TDM和分组报文数据后发送。 装 置由于是以子信元为基本单元进行交换的， 所以使得网络中的数据传输不需要 受到虚容器大小的限制， 进而提高网络的处理灵活性， 并且该方法可以同吋对 T DM帧和分组报文进行处理， 更为适合网络由 TDM向 ALL IP演进。
[69] 综上所述， 本发明具体实施方式提供的技术方案， 具有提高网络的处理灵活性 ， 更为适合网络由 TDM向 ALL IP演进的优点。
[70] 以上所述， 仅为本发明较佳的具体实施方式， 但本发明的保护范围并不局限于 此， 任何熟悉本技术领域的技术人员在本发明实施例揭露的技术范围内， 可轻 易想到的变化或替换， 都应涵盖在本发明的保护范围之内。 因此， 本发明的保 护范围应该以权利要求的保护范围为准。

Claims

权利要求书
[1] 一种多协议交换网的信号处理方法， 其特征在于， 所述方法包括：
将以 STM-1为单元的吋分复用 TDM帧和分组报文数据进行统一的切片处理 成以子信元为基本单元的数据， 并将交换网交换距阵的出端口信息加载在 所述子信元的头部；
将所述子信元为基本单元的数据进行交换后， 将交换后的数据进行反切片 处理成 TDM帧和分组报文数据后发送。
[2] 根据权利要求 1所述的方法， 其特征在于， 所述将交换网交换距阵的出端口 信息加载在所述子信元的头部为，
当数据为分组报文的情况下， 根据分组报文的头部信息获取交换网交换距 阵的出端口信息， 并将所述交换网交换距阵的出端口信息加载在子信元的 头部；
当数据为以 STM- 1为单元的 TDM帧的情况下， 根据所述 TDM帧的业务交换 关系获取交换网交换距阵的出端口信息， 并将所述交换网交换距阵的出端 口信息加载在子信元的头部。
[3] 根据权利要求 1所述的方法， 其特征在于， 所述方法将所述子信元进行交换 之前还包括：
当为分组报文数据的情况下， 根据交换网交叉距阵的出端口拥塞状态， 对 所述以子信元为单位的数据进行仲裁和 /或反压处理。
[4] 根据权利要求 1所述的方法， 其特征在于， 所述以 STM-1为单元的 TDM帧 为：
将 TDM帧解间插为以 STM-1为单元的 TDM帧。
[5] 根据权利要求 4所述的方法， 其特征在于， 所述方法将 TDM帧解间插为以 S
TM-1为单元的 TDM帧之前还可以包括：
在识别出所述收到的信号为 TDM帧的情况下， 将同步数字体系的再生段开 销和复用段开销终结。
[6] 根据权利要求 1所述的方法， 其特征在于， 所述将交换后的数据进行反切片 处理成 TDM帧和分组报文数据后发送包括： 将交换后的数据进行反切片处理成以 STM-1为单元的 TDM帧后， 将以 STM- 1为单元的 TDM帧进行反解间插形成以 STM-4或 STM- 16的 TDM帧； 在将以 STM-4或 STM-16的 TDM帧和分组报文数据发送。
[7] 一种多协议交换网的信号处理装置， 其特征在于， 所述装置包括：
切片处理单元， 用于将以 STM-1为单元的吋分复用 TDM帧和分组报文数据 进行统一的切片处理成以子信元为基本单元的数据；
加载单元， 用于将交换网交换距阵的出端口信息加载在所述子信元的头部 交换单元， 用于将所述子信元为基本单元的数据进行交换；
反切片处理单元，
用于将交换后的数据进行反切片处理成 TDM帧和分组报文数据后发送。
[8] 根据权利要求 7所述的装置， 其特征在于， 所述加载单元包括：
分组加载模块， 用于当数据为分组报文的情况下， 根据分组报文的头部信 息获取交换网交换距阵的出端口信息， 并将所述交换网交换距阵的出端口 信息加载在子信元的头部；
TDM加载模块， 用于当数据为以 STM-1为单元的 TDM帧的情况下， 根据所 述 TDM帧的业务交换关系获取交换网交换距阵的出端口信息， 并将所述交 换网交换距阵的出端口信息加载在子信元的头部。
[9] 根据权利要求 7所述的装置， 其特征在于， 所述装置还包括：
仲裁处理单元， 用于当为分组报文数据的情况下， 根据交换网交叉距阵的 出端口拥塞状态， 对所述以子信元为单位的数据进行仲裁处理 和 /或反压处理单元， 用于当为分组报文数据的情况下， 根据交换网交叉距 阵的出端口拥塞状态， 对所述以子信元为单位的数据进行反压处理。
[10] 根据权利要求 7所述的装置， 其特征在于， 所述装置还包括：
解间插单元， 用于将 TDM帧解间插为以 STM-1为单元的 TDM帧。
[11] 根据权利要求 7所述的装置， 其特征在于， 所述装置还可以包括：
终结单元， 用于在所述解间插单元进行解间插之前， 并识别出所述收到的 信号为吋分复用 TDM帧的情况下， 将同步数字体系的再生段开销和复用段 开销终
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