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Method of transmitting asychronous linking data and its performance device

An asynchronous serial port and data technology, applied in the field of communication, to achieve the effects of improved real-time performance, high reliability, and reduced system cost

Inactive Publication Date: 2004-10-20
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is in order to overcome the above-mentioned shortcoming in the prior art, solves the problem that serial port data carries out real-time transmission by synchronous 2M line

Method used

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  • Method of transmitting asychronous linking data and its performance device
  • Method of transmitting asychronous linking data and its performance device
  • Method of transmitting asychronous linking data and its performance device

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Embodiment Construction

[0032] Below in conjunction with embodiment and accompanying drawing, further illustrate the present invention.

[0033] The method and device for real-time transmission of asynchronous "transparent" serial port data through 2M lines in the present invention are as follows: figure 1 The main functional modules shown in the following parts are:

[0034] A. Serial port level conversion module 101

[0035] B. Serial port and HW signal conversion module 102

[0036] C.E1 interface module 103

[0037] The serial port level conversion module 101 provides corresponding interface levels according to different external serial ports (RS232 or RS422);

[0038] E1 interface module 103 performs serial port time slot exchange, and realizes mutual conversion between 2M rate HW signal and standard E1 signal;

[0039] The serial port and HW signal conversion module 102 is the core of the present invention, and it adopts EPLD or FPGA device as the hardware carrier. The basic principle is t...

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Abstract

The invention relates to device and method for transferring asynchronous serial-port data through synchronizing channel. Connection between HW wire and serial-port conversion module 201 separates time slot of HW wire and sends the data to serial-port allocation control module 203 sampled signal output from serial-port allocation control module 204 is transferred to time slot of HW wire by serial-port to HW wire conversion module 202 timing processing module converts timing signal input form outside to timing signals needed by each module; communication watch dog module 205 monitors serial-port data of inputting to HW wire. Conversion from asynchronous data to synchronous data is completed by hardware.

Description

technical field [0001] The invention relates to the communication field, in particular to a method and a device for transmitting asynchronous serial port data of various rates through a synchronous channel in the communication field. Background technique [0002] In modern communication systems, the communication distance between asynchronous serial devices is very limited, and long-distance communication is usually completed through 2M lines. Can the time slot in the 2M line be used to transmit the data of asynchronous serial communication? That is, the asynchronous serial port data needs to be properly converted for transmission through the 2M line. The traditional data transmission method is: the CPU receives and sends serial port data through its own serial port or the extended serial port, and the CPU extracts or sends the data of a certain time slot in the HW line through the HDLC chip. The HW line is converted into an E1 signal through th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J3/00H04L12/42H04L69/40H04M3/42
Inventor 路旭石玉泽周玉涛
Owner ZTE CORP