WO2013026378A1 - 嵌入控制信道信息传输方法和装置 - Google Patents

嵌入控制信道信息传输方法和装置 Download PDF

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Publication number
WO2013026378A1
WO2013026378A1 PCT/CN2012/080332 CN2012080332W WO2013026378A1 WO 2013026378 A1 WO2013026378 A1 WO 2013026378A1 CN 2012080332 W CN2012080332 W CN 2012080332W WO 2013026378 A1 WO2013026378 A1 WO 2013026378A1
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Prior art keywords
ptn
information
ecc
control channel
embedded control
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PCT/CN2012/080332
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English (en)
French (fr)
Inventor
张萌
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中兴通讯股份有限公司
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Publication of WO2013026378A1 publication Critical patent/WO2013026378A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J3/00Time-division multiplex systems
    • H04J3/02Details
    • H04J3/14Monitoring arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J2203/00Aspects of optical multiplex systems other than those covered by H04J14/05 and H04J14/07
    • 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
    • H04J2203/0057Operations, administration and maintenance [OAM]
    • H04J2203/006Fault tolerance and recovery

Definitions

  • the present invention relates to the field of communications, and in particular, to an embedded control channel (ECC) information transmission method and apparatus between a Packet Transport Network (PTN) and a Synchronous Digital Hierarchy (SDH) network.
  • ECC embedded control channel
  • the SDH equipment signal includes segment overhead, management pointer and payload.
  • the management information is usually transmitted through the SDH device mid-range D1-D12, which is called ECC information.
  • the commonly used solution is to convert ECC information into OAM (Operation Administration and Maintenance) information of non-SDH equipment and transmit it on non-SDH equipment.
  • OAM Operaation Administration and Maintenance
  • the ECC information needs to be converted according to different protocols. If there are many types of non-SDH devices, the workload will increase linearly, and each time a new device appears, it needs to be added once, for subsequent maintenance. Inconvenient; 2) The OAM information itself is used for network maintenance operations. The bandwidth reserved by the general equipment is not large. After being occupied by the ECC information, it may affect the normal operation.
  • a method for transmitting ECC information through an external clock interface of an SDH device is proposed.
  • the SDH device integrates the overhead bytes extracted by the optical interface into ECC information for transmission, and the ECC information sent by the CPU system passes the overhead.
  • the byte cross matrix is sent to the external clock interface and then converted to the standard E 1 format, as a service signal, through a network of other manufacturers' optical transmission equipment, or a network of its own optical transmission equipment.
  • a method for transmitting ECC information in a network composed of SDH devices comprises: converting an ECC information into an E1 framing signal by an SDH device;
  • the E1 framing signal is passed to its own E1 interface for transmission to the target SDH device;
  • the target SDH device parses the ECC information from the received E1 framing signal.
  • the ECC information is extracted into the E1 format by the SDH device, and then the signal in the E1 format is transmitted through the external clock interface or the E1 interface to achieve the purpose of ECC information transmission.
  • At least one additional E1 interface is required to increase resource usage; and the E1 interface can only be fixed for transmitting ECC information, and resource utilization is low.
  • the embodiments of the present invention provide an embedded control channel information transmission method and apparatus, which solves the problem of increased resource occupation and low utilization rate in the related ECC information transmission process.
  • An embodiment of the present invention provides an embedded control channel information transmission method, which is applicable to a packet switched network (PTN), and the method includes:
  • PTN device receives synchronous transmission module from Synchronous Digital Hierarchy (SDH) network
  • STM-N extracting embedded control channel (ECC) information from the STM-N signal
  • the PTN device packages the ECC information, and maps the packaged ECC information to a standard communication signal interface of the PTN.
  • the standard communication signal interface is a T1 or E1 signal interface.
  • the steps of mapping the packaged ECC information to the standard communication signal interface of the PTN include:
  • the usage information of the data communication channel (DCC) bytes is passed in the first two bytes of the standard communication signal interface, and the information of D1 to D12 bytes is transmitted in the third to the 14th bytes of the standard communication signal interface.
  • the method further includes: after mapping the packaged ECC information to a standard communication signal interface of the PTN, the PTN performs pseudowire encapsulation on the standard communication signal interface, and delivers the encapsulated packet to the packet Downstream PTN equipment.
  • the embodiment of the present invention further provides another method for transmitting embedded control channel information, which is applicable to a packet switched network (PTN), and the method includes:
  • the PTN device receives a pseudowire message from the PTN that includes embedded control channel (ECC) information, and extracts the ECC information from the pseudowire message;
  • ECC embedded control channel
  • the ECC information is incorporated into a synchronous transmission module N-level (STM-N) signal transmitted to a synchronous digital hierarchy (SDH) network, and transmitted to the SDH network.
  • STM-N synchronous transmission module N-level
  • SDH synchronous digital hierarchy
  • the step of extracting the ECC information from the pseudowire message includes:
  • the PTN device strips data of the standard communication signal interface from the pseudowire message; and the PTN device demaps data of the standard communication signal interface to obtain ECC information.
  • the standard communication signal interface is a T1 or E1 signal interface.
  • the embodiment of the present invention further provides an embedded control channel information transmission apparatus, which is applicable to a packet switching network (PTN), and the apparatus includes:
  • Synchronous Digital Hierarchy (SDH) side module configured to receive an N-level (STM-N M) from the SDH network to extract embedded Control Channel (ECC) information from the STM-N signal;
  • STM-N M N-level
  • ECC embedded Control Channel
  • a PTN side module configured to package the ECC information, and to package the
  • the ECC information is mapped into the standard communication signal interface of the PTN.
  • the PTN side module is further configured to receive a pseudowire message containing ECC information from the PTN, and extract the ECC information from the pseudowire message;
  • the SDH side module is further configured to merge the ECC information into an STM-N signal sent to the SDH network, and send the information to the SDH network.
  • the standard communication signal interface is a T1 or E1 signal interface.
  • Embodiments of the present invention provide an embedded control channel information transmission method and apparatus.
  • the PTN device receives an STM-N signal from an SDH network, extracts ECC information from the STM-N signal, and then packages the ECC information. And mapping the packaged ECC information to a standard communication signal interface of the PTN; or, the PTN device receives a pseudowire message from the PTN that includes the ECC information, and extracts the packet from the pseudowire message.
  • the ECC information is merged into the STM-N signal sent to the SDH network, and sent to the SDH network, which realizes the transmission of ECC information between the SDH network and the PTN, and solves the related ECC information transmission process. The problem of increased resource utilization and low utilization rate.
  • Embodiment 1 is a flow chart of a method for transmitting embedded control channel information according to Embodiment 1 of the present invention
  • FIG. 2 is a schematic diagram showing the position of ECC information in the STM-N signal
  • Embodiment 3 is a flow chart of a method for transmitting embedded control channel information according to Embodiment 2 of the present invention.
  • FIG. 4 is a schematic structural diagram of an application environment network according to Embodiment 3 of the present invention.
  • FIG. 5 is a schematic structural diagram of an embedded control channel information transmission apparatus according to Embodiment 4 of the present invention. Preferred embodiment of the invention
  • the SDH device extracts the ECC information into the E1 format, and then transmits the E1 format signal through the external clock interface or the E1 interface to achieve the purpose of ECC information transmission.
  • At least one additional E1 interface is required, which increases resource usage; and the E1 interface can only be fixed for transmitting ECC information, and resource utilization is low.
  • an embodiment of the present invention provides a method and an apparatus for transmitting embedded control channel information.
  • Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments in the present application may be arbitrarily combined with each other. First, the first embodiment of the present invention will be described with reference to the accompanying drawings.
  • the embodiment of the invention provides an embedded control channel information transmission method, which can realize flexible and efficient exchange of ECC information between the SDH network and the PTN without increasing resource occupation.
  • the embodiment of the present invention describes a process for the PTN to receive the ECC information of the SDH network, as shown in FIG. 1 , which includes:
  • Step 101 The PTN device receives a synchronous transmission module N-level (STM-N) signal from the SDH network, and extracts ECC information from the STM-N signal.
  • STM-N synchronous transmission module N-level
  • the location of the ECC information in the STM-N signal is as shown in FIG. 2.
  • the PTN device receives the STM-N signal sent by the SDH device in the SDH network, the ECC information is extracted from the corresponding position of the STM-N signal. .
  • Step 102 The PTN device packages the ECC information, and maps the packaged ECC information to a standard communication signal of the PTN.
  • the standard communication signal is a T1 or E1 signal, and the signal supports processing in all communication devices.
  • DCC Data Communications Channel
  • D1-D3 is usually called DCC-R
  • D4-D12 is usually called DCC-M
  • DCC-M it is actually used. You can choose DCC-R+DCC-M or just select one of them.
  • the 15th byte of the standard communication signal interface is idle and can also be used for the implementation of extended functions.
  • Step 103 The PTN performs the pseudowire encapsulation on the standard communication signal, and transmits the encapsulated packet to the downstream PTN device.
  • the standard communication signal is subjected to pseudowire encapsulation processing as a normal service, and the transmission of ECC information to the downstream PTN device can be completed without special occupation of a dedicated dedicated resource.
  • the PTN device directly transmitting data with the SDH network is an edge node device of the PTN.
  • the embodiment of the invention provides an embedded control channel information transmission method, which can realize flexible and efficient exchange of ECC information between the SDH network and the PTN without increasing resource occupation.
  • the embodiment of the present invention describes a process for sending a PTN to an SDH network to send ECC information, as shown in FIG. 3, which includes:
  • Step 301 The PTN device receives a pseudowire packet from the PTN that includes the ECC information, and extracts the ECC information from the pseudowire packet.
  • the PTN device strips the data of the standard communication signal interface from the pseudowire message, and then the PTN device demaps the data of the standard communication signal interface to obtain the ECC information.
  • the standard communication signal is a T1 or E1 signal, and such signals are supported in all communication devices.
  • Step 302 Combine the ECC information into an STM-N signal sent to the SDH network, and send the information to the SDH network.
  • the PTN device directly transmitting data with the SDH network is an edge node device of the PTN.
  • An embodiment of the present invention provides an embedded control channel information transmission method, as shown in FIG.
  • devices A and B are SDH devices
  • PTN devices C and D are connected to A and B through optical fibers
  • C and D are networks NETX composed of non-SDH devices.
  • the device C in the PTN first receives the SDH signal sent by the SDH device A.
  • the ECC information of the SDH signal in the device A needs to be transmitted through the entire PTN through the device C, and then transmitted to the device D, and then by the device D.
  • the ECC information is transmitted to device B, thus realizing the transfer of ECC information between the isolated SDH devices.
  • Step 1 A and C are connected by optical fiber, and C receives the STM-N signal transmitted by A;
  • Step 2 C extracts ECC information from the received STM-N signal, and the operation of the part is completed by a general FPGA (Field Programmable Gate Array) processing program;
  • FPGA Field Programmable Gate Array
  • Step 3 C directly maps the ECC information to a T1/E1 interface, which is referred to as P.
  • P T1/E1 interface
  • mapping relationship of the ECC information in the T1/E1 interface as shown in Table 1, where the first two bytes are used to convey the usage information of the DCC byte, and the 3-14 bytes are used to transfer the information of the D1-D12 bytes.
  • the remaining bytes of the E1/T1 interface are free or used for future expansion.
  • the first two bytes indicate the time usage of the ECC byte at the time of mapping.
  • Step 4 P is pseudowired in CESoP mode to generate a pseudowire l M;
  • Step 5 The pseudowire packet is sent to the downstream as a general packet in the PTN.
  • Step 1 D receives a pseudowire message N containing the ECC information from the PTN;
  • Step 2 Stripping the pseudowire simulation information in N, and obtaining the information P of the T1/E1 interface;
  • Step 3 Demap the content in P to obtain ECC information;
  • the demapping process uses the reverse operation of the mapping process.
  • Step 4 D combines the ECC information into the STM-N signal in the sending direction, and the operation of the part is completed by a general FPGA processing program;
  • Step 5 D transmits the STM-N signal that incorporates the ECC information to B.
  • the embodiment of the invention provides an embedded control channel information transmission device, which is applicable to the PTN.
  • the structure thereof is as shown in FIG. 5, and includes:
  • An SDH side module 501 configured to receive an STM-N signal from the SDH network, extracting ECC information from the STM-N signal;
  • the PTN side module 502 is configured to packetize the ECC information and map the packed ECC information to a standard communication signal of the PTN.
  • the PTN side module 502 is further configured to receive a pseudowire message from the PTN that includes the ECC information, and extract the ECC information from the pseudowire message.
  • the SDH side module 501 is further configured to merge the ECC information into the SDH network.
  • the standard communication signal is a T1 or E1 signal.
  • the embedded control channel information transmission device may be integrated into an edge node PTN device in the PTN to perform a corresponding function.
  • the embedded control channel information transmission apparatus can be combined with an embedded control channel information transmission method provided by the embodiment of the present invention, and the device receives the STM- ⁇ signal from the SDH network, from the STM- ⁇ Extracting ECC information from the signal, packaging the ECC information, and mapping the packed ECC information to the standard communication signal of the UI; or, the device receiving the pseudo ECC information from the UI a line message, and extracting the ECC information from the pseudowire message, combining the ECC information into an STM- ⁇ signal sent to an SDH network, and transmitting the signal to the SDH network, implementing the SDH network and The transmission of ECC information between ⁇ , solves the problem of increased resource occupation and low utilization rate in the process of ECC information transmission.
  • all or part of the steps of the foregoing embodiments may also be implemented by using an integrated circuit. These steps may be separately fabricated into individual integrated circuit modules, or multiple modules or steps may be fabricated into a single integrated circuit module. achieve.
  • the invention is not limited to any particular combination of hardware and software.
  • the various devices/function modules/functional units in the above embodiments may be implemented using a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.
  • Each device/function module/functional unit in the above embodiments can be stored in a computer readable storage medium when implemented in the form of a software function module and sold or used as a standalone product.
  • the above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.
  • the embodiment of the invention implements the transmission of ECC information between the SDH network and the PTN, and solves the problem of increased resource occupation and low utilization rate in the related ECC information transmission process.

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Abstract

一种嵌入控制信道信息传输方法和装置,涉及通信领域,解决了相关ECC信息传输过程中资源占用增加、利用率低的问题。该方法包括:PTN设备接收来自SDH网络的STM-N信号,从该STM-N信号中抽离出ECC信息;所述PTN设备将所述ECC信息进行打包,并将打包后的所述ECC信息映射至所述PTN的标准通信信号中。本发明提供的技术方案适用于SDH网络与PTN之间的信息交换,实现了在SDH网络和PTN之间ECC信息的高效传输。

Description

嵌入控制信道信息传输方法和装置
技术领域
本发明涉及通信领域, 尤其涉及一种分组传送网 (Packet Transport Network, 简称 PTN )与同步数字体系 ( Synchronous Digital Hierarchy, 简称 SDH ) 网络间的嵌入控制信道(ECC )信息传输方法和装置。 背景技术
目前通讯行业中, 大部分业务的承载是通过 SDH设备完成的, SDH设 备信号中包括段开销、管理指针和净荷。 SDH设备组成网络后,为了管理 SDH 这些设备,通常是通过 SDH设备中段开销 D1-D12传递管理信息,称之为 ECC 信息。
随着通讯网络的发展, PTN设备和其他基于 IP、 ATM ( Asynchronous Transfer Mode )等协议的设备在网络中不断增加, 这样就造成了 SDH设备网 络断开, ECC信息无法直接传递。
目前通常使用的解决方案,是将 ECC信息进行信息转换,转换为非 SDH 设备的 OAM ( Operation Administration and Maintenance )信息, 在非 SDH设 备上进行传递, 这样处理的缺陷主要有两条:
1 )对不同的非 SDH设备, 需要将 ECC信息按照不同的协议进行转换, 如果非 SDH设备的类型很多, 工作量会线性增加, 而且每次出现新设备, 都 需要增加一次, 对于后续的维护不方便; 2 ) OAM信息本身是用于网络维护 操作的内容, 一般设备预留的带宽不大, 被 ECC信息占用后, 有可能会对正 常的操作造成影响。
在专利 CN03142590中,提出一种通过 SDH设备的外时钟接口传送 ECC 信息的方法, 所述 SDH设备将光接口提取出来的开销字节整合为 ECC信息 用于发送, CPU 系统送出的 ECC信息通过开销字节交叉矩阵送给外时钟接 口, 然后转换为标准的 E 1格式, 作为业务信号, 穿过其它制造商光传输设 备构成的网络, 或者自身光传输设备构成的网络。 类似的, 在专利 CN200910108532.6中, 提出一种 SDH设备组成的网络 中 ECC信息的传输方法, 其特征在于, 所述方法包括: SDH设备将 ECC信 息转换成 E1成帧信号; 所述 SDH设备将所述 E1成帧信号传递到其自带的 E1接口以发送到目标 SDH设备; 所述目标 SDH设备从收到的 E1成帧信号 中解析出 ECC信息。
上述两种方案, 均由 SDH设备将 ECC信息提取为 E1格式, 然后将 E1 格式的信号通过外时钟接口或 E1接口传递出去,达到 ECC信息传递的目的。
相关技术中至少存在如下问题:
需要至少一个额外的 E1接口, 增加了资源占用; 且该 E1接口只能固定 用于传输 ECC信息, 资源利用率低。
发明内容
本发明实施方式提供了一种嵌入控制信道信息传输方法和装置, 解决了 相关 ECC信息传输过程中资源占用增加、 利用率低的问题。 本发明实施方式提供一种嵌入控制信道信息传输方法, 适用于分组交换 网络( PTN ) 中, 该方法包括:
PTN设备接收来自同步数字体系 ( SDH ) 网络的同步传输模块 N级
( STM - N )信号, 从该 STM - N信号中抽离出嵌入控制信道(ECC )信息; 以及
所述 PTN设备将所述 ECC信息进行打包, 并将打包后的所述 ECC信息 映射至所述 PTN的标准通信信号接口中。 所述标准通信信号接口为 T1或 E1信号接口。 将打包后的所述 ECC信息映射至所述 PTN的标准通信信号接口中的步 骤包括:
在所述标准通信信号接口的前两个字节传递数据通信通道(DCC )字节 的使用信息,在所述标准通信信号接口的第 3至第 14字节传递 D1至 D12字 节的信息。 该方法还包括: 将打包后的所述 ECC信息映射至所述 PTN的标准通信 信号接口中之后, 所述 PTN将所述标准通信信号接口进行伪线封装, 将封装 后得到的报文传递给下游 PTN设备。 本发明实施方式还提供另一种嵌入控制信道信息传输方法, 适用于分组 交换网络(PTN ) 中, 该方法包括:
PTN设备接收来自 PTN的包含嵌入控制信道(ECC )信息的伪线报文, 并从所述伪线报文中提取所述 ECC信息; 以及
将所述 ECC信息合入向同步数字体系(SDH )网络发送的同步传输模块 N级( STM - N )信号中, 向所述 SDH网络发送。 从所述伪线报文中提取所述 ECC信息的步骤包括:
所述 PTN设备从所述伪线报文中剥离出标准通信信号接口的数据; 以及 所述 PTN设备对所述标准通信信号接口的数据进行解映射, 获取 ECC 信息。 所述标准通信信号接口为 T1或 E1信号接口。 本发明实施方式还提供一种嵌入控制信道信息传输装置, 适用于分组交 换网络(PTN ) 中, 该装置包括:
同步数字体系 (SDH )侧模块, 其设置为接收来自 SDH网络的同步传输 模块 N级( STM - N M言号,从该 STM - N信号中抽离出嵌入控制信道( ECC ) 信息; 以及
PTN侧模块, 其设置为将所述 ECC信息进行打包, 并将打包后的所述
ECC信息映射至所述 PTN的标准通信信号接口中。
所述 PTN侧模块还设置为接收来自 PTN的包含 ECC信息的伪线报文, 并从所述伪线报文中提取所述 ECC信息;
所述 SDH侧模块还设置为将所述 ECC信息合入向 SDH网络发送的 STM - N信号中, 向所述 SDH网络发送。
所述标准通信信号接口为 T1或 E1信号接口。 本发明实施方式提供了一种嵌入控制信道信息传输方法和装置, PTN设 备接收来自 SDH网络的 STM - N信号,从该 STM - N信号中抽离出 ECC信 息, 再将所述 ECC信息进行打包, 并将打包后的所述 ECC信息映射至所述 PTN的标准通信信号接口中; 或, PTN设备接收来自 PTN的包含 ECC信息 的伪线报文, 并从所述伪线报文中提取所述 ECC信息, 将所述 ECC信息合 入向 SDH网络发送的 STM - N信号中,向所述 SDH网络发送,实现了在 SDH 网络和 PTN之间 ECC信息的传输, 解决了相关 ECC信息传输过程中资源占 用增加、 利用率低的问题。
附图概述
图 1 为本发明实施例一提供的一种嵌入控制信道信息传输方法的流程 图;
图 2为 STM-N信号中 ECC信息的位置示意图;
图 3 为本发明实施例二提供的一种嵌入控制信道信息传输方法的流程 图;
图 4为本发明实施例三中应用环境网络结构示意图;
图 5为本发明实施例四提供的一种嵌入控制信道信息传输装置的结构示 意图。 本发明的较佳实施方式
相关技术中, SDH设备将 ECC信息提取为 E1格式, 然后将 E1格式的 信号通过外时钟接口或 E1接口传递出去, 达到 ECC信息传递的目的。
在上述的实现方式中, 需要至少一个额外的 E1接口, 增加了资源占用; 且该 E1接口只能固定用于传输 ECC信息, 资源利用率低。
为了解决上述问题, 本发明实施例提供了一种嵌入控制信道信息传输方 法和装置。 下文中将结合附图对本发明的实施例进行详细说明。 需要说明的 是, 在不冲突的情况下, 本申请中的实施例及实施例中的特征可以相互任意 组合。 首先结合附图, 对本发明实施例一进行说明。
本发明实施例提供了一种嵌入控制信道信息传输方法, 使用该方法能够 实现在不增加资源占用的情况下, SDH网络与 PTN间 ECC信息灵活高效的 交换。 本发明实施例对 PTN接收 SDH网络 ECC信息的流程进行说明, 具体 如图 1所示, 包括:
步骤 101、 PTN设备接收来自 SDH网络的同步传输模块 N级( STM - N ) 信号, 从该 STM - N信号中抽离出 ECC信息;
本步骤中, STM-N信号中 ECC信息的位置如图 2所示, PTN设备在接 收到 SDH网络中 SDH设备发送的 STM - N信号时, 即从该 STM - N信号的 相应位置提取 ECC信息。
步骤 102、所述 PTN设备将所述 ECC信息进行打包, 并将打包后的所述 ECC信息映射至所述 PTN的标准通信信号中;
本步骤中, 可选的, 所述标准通信信号为 T1或 E1信号, 此类信号在所 有的通讯设备中都支持处理。
具体在 T1或 E1信号中映射 ECC信息的方式如下:
在所述标准通信信号接口的前两个字节传递数据通信通道 ( Data Communications Channel , 简称 DCC )字节(用于传递 ECC的字节)的使用 信息,在所述标准通信信号接口的第 3至第 14字节传递 D1至 D12字节的信 息 (即为 ECC信息) , 如表 1所示。
表 1
Figure imgf000007_0001
其中 D1-D3通常称之为 DCC-R, D4-D12通常称之为 DCC-M, 实际使用 的时候可以选择 DCC-R+DCC-M或者仅仅选择其中的一个。标准通信信号接 口的第 15字节空闲, 亦可用于扩展功能的实现。
步骤 103、 所述 PTN将所述标准通信信号进行伪线封装, 将封装后得到 的才艮文传递给下游 PTN设备;
本步骤中, 将该标准通信信号作为一个正常业务进行伪线封装处理, 不 需要特别占用单独的专用资源即可完成 ECC信息向下游 PTN设备的发送。
本发明实施例中与 SDH网络直接进行数据传输的 PTN设备为 PTN的边 缘节点设备。
下面结合附图, 对本发明实施例二进行说明。
本发明实施例提供了一种嵌入控制信道信息传输方法, 使用该方法能够 实现在不增加资源占用的情况下, SDH网络与 PTN间 ECC信息灵活高效的 交换。 本发明实施例对 PTN向 SDH网络发送 ECC信息的流程进行说明, 具 体如图 3所示, 包括:
步骤 301、 PTN设备接收来自 PTN中包含 ECC信息的伪线报文,并从所 述伪线报文中提取所述 ECC信息;
本步骤中, 首先, PTN设备从伪线报文中剥离出标准通信信号接口的数 据, 然后, PTN设备对所述标准通信信号接口的数据进行解映射, 获取 ECC 信息。 所述标准通信信号为 T1或 E1信号, 此类信号在所有的通讯设备中都 支持处理。
步骤 302、 将所述 ECC信息合入向 SDH网络发送的 STM - N信号中, 向所述 SDH网络发送。
本发明实施例中与 SDH网络直接进行数据传输的 PTN设备为 PTN的边 缘节点设备。
下面结合附图, 对本发明的实施例三进行说明。
本发明实施例提供了一种嵌入控制信道信息传输方法, 在如图 4所示的 网络中, 其中设备 A和 B是 SDH设备, PTN设备 C、 D分别与 A、 B通过光 纤连接, C、 D之间是非 SDH设备组成的网络 NETX。
PTN中的设备 C首先接收到 SDH设备 A发送的 SDH信号, 为了进行 SDH网络的管理,需要通过设备 C将设备 A中 SDH信号的 ECC信息穿透整 个 PTN, 传递给设备 D, 然后由设备 D将 ECC信息传给设备 B, 这样就实现 了被隔离开的 SDH设备之间 ECC信息的传递。
首先, 对 ECC信息从 SDH设备向 PTN设备的传递的流程进行说明: 步骤一、 A与 C之间通过光纤连接, C接收到 A传递过来的 STM-N信 号;
步骤二、 C从接收的 STM-N信号中提取出 ECC信息, 该部分的操作通 过通用的 FPGA ( Field Programmable Gate Array )处理程序完成;
步骤三、 C将 ECC信息直接映射为一个 T1/E1接口, 这里称之为 P; 为 了便于说明, 在表 1中介绍了目前使用的方案中 ECC映射的一种方式, 实际 使用中不局限于该方式。
如表 1所示的 ECC信息在 T1/E1接口中的映射关系,其中前两个字节用 于传递 DCC字节的使用信息, 3-14字节用于传递 D1-D12字节的信息。 E1/T1 接口剩余的字节空闲或者用于以后的扩展。
在实际使用中, 由于 ECC 的实际使用信息可以是 DCC-R、 DCC-M、 DCC-R+DCC-M, 因此在映射的时候在前两个字节标示 ECC字节的时间使用 情况。
步骤四、 将 P以 CESoP方式进行伪线仿真, 生成伪线 l M;
步骤五、 伪线报文作为 PTN中的通用报文, 向下游传递。
然后, 对 ECC信息从 PTN设备向 SDH设备的传递的过程进行说明: 步骤一、 D从 PTN中接收到包含 ECC信息的伪线报文 N;
步骤二、 将 N中的伪线仿真信息剥离, 获取 T1/E1接口的信息 P;
步骤三、 将 P中的内容进行解映射, 得到 ECC信息; 本步骤中, 解映射的过程釆用映射过程的逆向操作。
步骤四、 D将 ECC信息合入发送方向的 STM-N信号中, 该部分的操作 通过通用的 FPGA处理程序完成;
步骤五、 D将合入了 ECC信息的 STM-N信号传递给 B。
下面结合附图, 对本发明的实施例四进行说明。
本发明实施例提供了一种嵌入控制信道信息传输装置, 适用于 PTN中, 其结构如图 5所示, 包括:
SDH侧模块 501 , 其设置为接收来自 SDH网络的 STM - N信号, 从该 STM - N信号中抽离出 ECC信息; 以及
PTN侧模块 502, 其设置为将所述 ECC信息进行打包, 并将打包后的所 述 ECC信息映射至所述 PTN的标准通信信号中。
可选的, 所述 PTN侧模块 502还设置为接收来自 PTN中包含 ECC信息 的伪线报文, 并从所述伪线报文中提取所述 ECC信息
所述 SDH侧模块 501还设置为将所述 ECC信息合入向 SDH网络发送的
STM - N信号中, 向所述 SDH网络发送。
可选的, 所述标准通信信号为 T1或 E1信号。
可选的, 上述嵌入控制信道信息传输装置可集成于 PTN 中的边缘节点 PTN设备, 以完成相应功能。
本发明实施例提供的嵌入控制信道信息传输装置, 能够与本发明实施例 所提供的一种嵌入控制信道信息传输方法相结合,ΡΤΝ设备接收来自 SDH网 络的 STM - Ν信号, 从该 STM - Ν信号中抽离出 ECC信息, 再将所述 ECC 信息进行打包, 并将打包后的所述 ECC信息映射至所述 ΡΤΝ的标准通信信 号中; 或, ΡΤΝ设备接收来自 ΡΤΝ中包含 ECC信息的伪线报文, 并从所述 伪线报文中提取所述 ECC信息, 将所述 ECC信息合入向 SDH网络发送的 STM - Ν信号中,向所述 SDH网络发送,实现了在 SDH网络和 ΡΤΝ之间 ECC 信息的传输, 解决了相关 ECC信息传输过程中资源占用增加、 利用率低的问 本领域普通技术人员可以理解上述实施例的全部或部分步骤可以使用计 算机程序流程来实现,所述计算机程序可以存储于一计算机可读存储介质中, 所述计算机程序在相应的硬件平台上(如系统、 设备、 装置、 器件等)执行, 在执行时, 包括方法实施例的步骤之一或其组合。
可选地, 上述实施例的全部或部分步骤也可以使用集成电路来实现, 这 些步骤可以被分别制作成一个个集成电路模块, 或者将它们中的多个模块或 步骤制作成单个集成电路模块来实现。 这样, 本发明不限制于任何特定的硬 件和软件结合。
上述实施例中的各装置 /功能模块 /功能单元可以釆用通用的计算装置来 实现, 它们可以集中在单个的计算装置上, 也可以分布在多个计算装置所组 成的网络上。
上述实施例中的各装置 /功能模块 /功能单元以软件功能模块的形式实现 并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。 上述提到的计算机可读取存储介质可以是只读存储器, 磁盘或光盘等。
任何熟悉本技术领域的技术人员在本发明揭露的技术范围内, 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 范围应以权利要求所述的保护范围为准。
工业实用性
本发明实施例实现了在 SDH网络和 PTN之间 ECC信息的传输, 解决了 相关 ECC信息传输过程中资源占用增加、 利用率低的问题。

Claims

权 利 要 求 书
1、 一种嵌入控制信道信息传输方法, 适用于分组交换网络(PTN ) 中, 该方法包括:
PTN设备接收来自同步数字体系 ( SDH ) 网络的同步传输模块 N级 ( STM - N )信号, 从该 STM - N信号中抽离出嵌入控制信道(ECC )信息; 以及
所述 PTN设备将所述 ECC信息进行打包, 并将打包后的所述 ECC信息 映射至所述 PTN的标准通信信号接口中。
2、 根据权利要求 1所述的嵌入控制信道信息传输方法, 其中, 所述标准 通信信号接口为 T1或 E1信号接口。
3、 根据权利要求 1或 2所述的嵌入控制信道信息传输方法, 其中, 将打 包后的所述 ECC信息映射至所述 PTN的标准通信信号接口中的步骤包括: 在所述标准通信信号接口的前两个字节传递数据通信通道(DCC )字节 的使用信息,在所述标准通信信号接口的第 3至第 14字节传递 D1至 D12字 节的信息。
4、 根据权利要求 1或 2所述的嵌入控制信道信息传输方法, 还包括: 将 打包后的所述 ECC信息映射至所述 PTN的标准通信信号接口中之后,
所述 PTN将所述标准通信信号接口进行伪线封装,将封装后得到的报文 传递给下游 PTN设备。
5、 一种嵌入控制信道信息传输方法, 适用于分组交换网络(PTN ) 中, 该方法包括:
PTN设备接收来自 PTN的包含嵌入控制信道(ECC )信息的伪线报文, 并从所述伪线报文中提取所述 ECC信息; 以及
将所述 ECC信息合入向同步数字体系(SDH )网络发送的同步传输模块 N级( STM - N )信号中, 向所述 SDH网络发送。
6、 根据权利要求 5所述的嵌入控制信道信息传输方法, 其中, 从所述伪 线报文中提取所述 ECC信息的步骤包括:
所述 PTN设备从所述伪线报文中剥离出标准通信信号接口的数据; 以及 所述 PTN设备对所述标准通信信号接口的数据进行解映射, 获取 ECC 信息。
7、 根据权利要求 6所述的嵌入控制信道信息传输方法, 其中, 所述标准 通信信号接口为 T1或 E1信号接口。
8、 一种嵌入控制信道信息传输装置, 适用于分组交换网络(PTN ) 中, 该装置包括:
同步数字体系 ( SDH )侧模块, 其设置为接收来自 SDH网络的同步传输 模块 N级( STM - N M言号,从该 STM - N信号中抽离出嵌入控制信道( ECC ) 信息; 以及
PTN侧模块, 其设置为将所述 ECC信息进行打包, 并将打包后的所述 ECC信息映射至所述 PTN的标准通信信号接口中。
9、 根据权利要求 8所述的嵌入控制信道信息传输装置, 其中,
所述 PTN侧模块还设置为接收来自 PTN的包含 ECC信息的伪线报文, 并从所述伪线报文中提取所述 ECC信息;
所述 SDH侧模块还设置为将所述 ECC信息合入向 SDH网络发送的 STM - N信号中, 向所述 SDH网络发送。
10、 根据权利要求 8或 9所述的嵌入控制信道信息传输装置, 其中, 所 述标准通信信号接口为 T1或 E1信号接口。
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