Method for long line transmission frame head and its realizing device

A technology for transmitting frames and frame headers, which is applied in the field of communication to achieve the effects of low implementation cost and flexible and convenient design.

Inactive Publication Date: 2007-07-25
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in a strict sense, the current method of directly transmitting the frame header signal also has certain potential dangers in some sudden and abnormal situations on site.

Method used

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  • Method for long line transmission frame head and its realizing device
  • Method for long line transmission frame head and its realizing device
  • Method for long line transmission frame head and its realizing device

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Embodiment Construction

[0038] In order to deeply understand the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0039] As shown in Figure 1, taking the common long-line transmission of 16M bit clock signal and 16M_8K frame header signal (that is, the frame header signal with a frequency of 8KHz under the bit clock frequency of 16MHz) as an example in the traditional circuit switching system, the dotted box part indicates Clock signal processing part, when the long-distance communication between the transmitting system and the receiving system, the 16M bit clock signal and 16M_8K frame header signal from the transmitting system need to be processed by the clock signal processing part before being transmitted to the data processing part of the receiving system for processing Correlation operation; while the data signal is directly sent to the data processing unit of the receiving system.

[0040] The c...

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Abstract

The method is applicable to communication system including transmission system, and receiving system with clock signal processing unit (CSPU) being embedded. The method includes steps: CSPU receives bit clock signal (CS) and signal of frame head from the transmission system, and carrying out phase locking, and removing burr for bit CS so as to obtain working CS; using mode of counting working CS, CSPU generates signal of the output frame head, which is in same frequency of signal the frame head; CSPU detects the signal the frame head to determine whether it is normal; if yes, making signal of the output frame head synchronize to the frame head, and sending the signal of the output frame head to the data process portion of the receiving system. The invention also discloses CSPU for implementing the method. The invention eliminates influence on communication system caused by burr occurred on head of long line transmission frame.

Description

technical field [0001] The invention relates to a clock transmission technology in the field of communication, in particular to a method for long-line transmission of a frame header and an implementation device thereof. Background technique [0002] In a communication system, in order to realize the synchronization of transmission data, it is usually necessary to transmit a frame synchronization clock (namely called a frame header signal) as a demarcation reference of transmission data. At the same time, it is also necessary to transmit the bit clock as a bit synchronization reference. However, due to the non-common ground of communication equipment or the influence of factors such as stray capacitance and inductive coupling in the circuit, cross-winding and reflection caused by transmission lines in actual work, the transmitted frame header signal is susceptible to interference and glitches , such a burr will cause at least one frame of data loss, and even cause interrupti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L7/00
Inventor 米小兵查卫民陈永铭
Owner ZTE CORP
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