CN2805235Y - Device for processing data business in multiple business transmission platform - Google Patents

Abstract

A device for processing data services in a multi-service transmission platform, including a service interface board and a data exchange processing unit; the data exchange processing unit includes a processing module and a mapping unit; in the receiving direction, the service interface is used to introduce user data, and pass through the code Type conversion, clock extraction and other processing, become standard interface data, after the serial-to-parallel conversion is completed, it is sent to the data exchange processing unit through the backplane interface for unified protocol processing and exchange, and converted into SDH signals, and then sent to the SDH cross-connect unit , perform data exchange processing with other SDH interface boards through the cross-connect unit; in the sending direction, complete the reverse process of the receiving direction. The modular structure of the utility model completely separates the interface from the processing, can reduce the development workload, and reduces the types of boards. It facilitates the design of integrated products with relatively small board area. Reduce power consumption and cost. Increased aggregation ratio.

Description

A device for processing data services in a multi-service transmission platform

technical field

The utility model relates to a device for processing data services in multi-service digital synchronous multiplexing equipment.

Background technique

In the current digital synchronous multi-service transport platform (MSTP: Multi-Service Transport Platform), the transmission of data services is often limited to a single board, as shown in Figure 1. Various user interfaces are accessed through the service processing board. The service processing board can be of various types, such as FE, GE, VDSL, etc. After processing the data packet, it is mapped to the SDH virtual container, and after SDH framing It is transmitted to the system cross unit through the backplane wiring, and then sent to the SDH optical circuit board for transmission.

This kind of transmission mode in which a single board completes all business processing has many disadvantages: the integration level is low, and since the outlet area of a single board is certain, for a site that needs to provide multiple user interfaces, it can only There are many types of boards, and each type of application requires a different board to implement, and the sharing of the same circuit part cannot be realized; data cannot be exchanged with each other, or the SDH equipment cross capacity must be occupied for exchange.

In the initial stage of MSTP development, a small number of simple user data services can be completed by the above-mentioned single board, but with the increase of the number of user data ports, the increase of service types and complexity, and considerations such as protecting user investment, more must be used. An advantageous way of doing business.

Utility model content

The technical problem to be solved by the utility model is to provide a device for processing data services that separates data processing from an interface board in a multi-service transmission platform.

The utility model includes a service interface board and a data exchange processing unit; the data exchange processing unit includes a processing module and a mapping unit; in the receiving direction, the service interface board includes at least one user interface in an electrical interface, an optical interface and an analog interface. It is used to introduce user data, and after code conversion, clock extraction, etc., it becomes standard interface data independent of the medium. After the data is serial-to-parallel converted, it is sent to the processing module in the data exchange processing unit through the backplane interface for unification. protocol processing and exchange, and map to the SDH virtual container through the mapping unit to convert it into an SDH signal, and then send it to the SDH cross-connect unit, and perform data exchange processing with other SDH interface boards through the cross-connect unit; in the sending direction, complete the inverse of the receiving direction process.

The SERDES module is used for serial-to-parallel conversion between the business interface module and the data processing unit.

The data processing unit is composed of programmable device FPGA, ASIC or network processor.

The utility model can bring the following effects:

1. The modular structure makes the interface and processing completely separated. Different processing functions can use the same interface, or different interfaces can correspond to the same processing board. For example, the interface of Ethernet can be divided into optical port and electrical port, using the same The processing board can be flexibly replaced according to user needs, or the same Ethernet processing board can be corresponding to a VDSL interface board to realize VDSL access. This reduces development effort and reduces board types.

2. The separation process reduces the original integration requirements. Some types of interface boards have more components and larger volumes, making it difficult to design multi-ports. Separating the interfaces can reduce design risks. It facilitates the design of integrated products with relatively small board area.

3. For data processing chips with high integration, more interface boards can be supported without having to install data processing chips on all the boards, reducing power consumption and cost, and the interface boards can continue to be used for other functions processing board. The more data ports the user needs.

4. Multiple interface boards are converged on the same processing board, which improves the convergence ratio.

5. Put the data processing center in the expansion slot, the data processing board can be replaced flexibly, support different functions, and facilitate future upgrades. Moreover, only the parts that need to be replaced can be replaced during the upgrade, maximizing the protection of user investment.

6. Each modular structure uses the same backplane wiring to achieve high speed and serialization, reduce the wiring pressure on the backplane, and reduce crosstalk. SERDES adopts mature coding conversion and embedded clock information, which is better than traditional data single The method of board mapping to SDH virtual container should be simple and reliable;

7. Different interface boards can protect each other, which solves the problem that the data boards have no protection in the past.

8. The data processing board and the interface board do not occupy the bandwidth of the backplane, and the exchange of data can not be affected by the crossover capability of the system, but is limited by the capability of the data processing chip. It is only affected by the connection bandwidth between the processing board and the system cross board.

Description of drawings:

FIG. 1 is a schematic diagram of a data service processing method in the prior art;

Fig. 2 is a structure of the utility model and a connection diagram with other single boards of the system.

Detailed ways

Shown in Fig. 2 is the structure of the utility model and the connection diagram with other single boards of the system. The utility model comprises a service interface board and a data exchange processing unit. The service interface board includes various types of user interface boards, and the interface can be an electrical interface, an optical interface or an analog interface. In the receiving direction, these interfaces are used to introduce user data such as FE/GE/VDSL, and after processing such as code conversion and clock extraction, they become media-independent data interfaces, and send the data to the SERDES serial-to-parallel conversion module. The board interface is sent to the data exchange processing unit. In the sending direction, the data type required by the interface is extracted from the SERDES module, and after processing such as clock insertion and encoding, it becomes user data such as FE, GE, and VDSL, and is sent to the user equipment.

The data exchange processing unit includes a processing module and a mapping unit. In the receiving direction, the processing module is mainly responsible for the unified processing and exchange of the data sent by each service interface, complete the transparent transmission of services, exchange, add/delete tags, aggregation, grooming, etc., and send the processing results to the mapping unit , mapped to the SDH virtual container, and then sent to the SDH cross-connect unit, through which data exchange is performed with other SDH interface boards. In the sending direction, the data from the SDH interface unit is sent to the mapping unit in the data exchange processing unit through the SDH cross-connect unit to decipher the data signal from the virtual container, send it to the processing module for data processing and exchange, and then send it to other services The interface single board, each user interface board completes code conversion and clock insertion to form interface type data of FE, GE and other standards.

The data exchange processing unit can also perform management, performance statistics, data collection and communication on the service interface boards in other slots. The data exchange processing unit completes data exchange, labeling, search, classification, scheduling and other processing, which varies according to different requirements and can be configured and modified by software. The unit can be composed of programmable device FPGA, ASIC, network processor or other methods. The unit can be upgraded and function converted by replacing a single board or module to meet the data processing requirements of other user interfaces. This unit centralizes and completes the data processing completed on each interface board in the original method. The mapping part meets the bandwidth requirements for all user data to SDH equipment transmission, and can complete mapping methods such as single container, continuous cascading, and virtual cascading. The connection on the backplane adopts the high-speed serial line with the same code to reduce the pressure on the backplane wiring, and at the same time, it can be compatible with other types of parallel low-speed lines, that is, different data interfaces can use the same backplane wiring. The code contains clock information, so that the receiver can recover the clock without transmitting clock information on the backplane.

Claims (3)

1. A device for processing data services in a multi-service transmission platform, characterized in that it includes a service interface board and a data exchange processing unit; the data exchange processing unit includes a processing module and a mapping unit; in the receiving direction, the service The interface board includes at least one user interface among electrical interface, optical interface and analog interface, which is used to introduce user data, and after code conversion, clock extraction, etc., it becomes a standard data interface independent of the medium, and the data is serialized. And after the conversion, it is sent to the processing module in the data exchange processing unit through the backplane interface for unified protocol processing and exchange, and is mapped to the SDH virtual container through the mapping unit to convert it into an SDH signal, and then sent to the SDH cross-connect unit, through The cross unit performs data exchange processing with other SDH interface boards; in the sending direction, it completes the reverse process in the receiving direction. 2. The device for processing data services in a multi-service transmission platform according to claim 1, characterized in that, the serial-to-parallel conversion is performed between the service interface module and the data processing unit with a SERDES module. 3. The device for processing data services in a multi-service transmission platform according to claim 1, wherein the data processing unit is composed of a programmable device FPGA, ASIC or network processor.

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