Unlock instant, AI-driven research and patent intelligence for your innovation.

Method and system for realizing E1 communication protocol

A technology of communication protocol and implementation method, applied in transmission systems, electrical components, etc., can solve the problems of not in-depth exploration of E1 circuit, E1 communication protocol implementation method, etc., to achieve a small footprint, reduced PCB size, and simple design. Effect

Inactive Publication Date: 2020-04-17
上海微波技术研究所(中国电子科技集团公司第五十研究所)
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent does not delve into the implementation method of E1 circuit and E1 communication protocol based on domestic components

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and system for realizing E1 communication protocol
  • Method and system for realizing E1 communication protocol
  • Method and system for realizing E1 communication protocol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0026] Such as Figure 1-Figure 5 Shown, according to the realization method of a kind of E1 communication protocol provided by the present invention, comprise: step M1: receive synchronous sign and NRZ sign indicating number (non-return-to-zero sign indicating number) by TDM interface, through protocol conversion in FPGA, synchronous sign and NRZ The code is converted into HDB3 code (third-order high-density bipolar code), and sent out through the transformer; Step M2: Receive the HDB3 code word throug...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides an E1 communication protocol realization method and system. The method comprises the steps of M1 receiving a synchronization mark and an NRZ code through a TDM interface, converting the synchronization mark and the NRZ code into an HDB3 code through protocol conversion in an FPGA, and transmitting the HDB3 code through a transformer; M2 receiving HDB3 code words through thetransformer, sending the HDB3 code words into the FPGA to complete protocol conversion, converting the HDB3 code words into NRZ codes and synchronous marks, and sending the NRZ codes and the synchronous marks out through the TDM interface; and M3 realizing an E1 communication protocol. According to the invention, the dependence on a special chip is eliminated, and the adopted key technology and software and hardware can be autonomously controlled; protocol processing is completed by the FPGA, and a peripheral circuit simply completes a simple level conversion function, so that the cost is reduced; the interface circuit is simple in design and small in occupied area; and the size of a PCB is reduced.

Description

technical field [0001] The present invention relates to the field of E1 links, in particular to a method and system for realizing the E1 communication protocol. Background technique [0002] Our country adopts the European E1 standard: the 30-channel pulse code modulation PCM is referred to as E1, and the rate is 2.048Mbit / s. The G.703 standard of CCITT specifies the physical and electrical characteristics of the E1 interface. At present, E1 interface has been widely used in frame relay network, packet network, base station and military communication, and is used to transmit various services such as voice, data, image and video. E1 application has two common modes in communication: framed mode and unframed mode. A time-division multiplexing frame of E1 (its length T=125us) is divided into 32 equal time slots, and the numbers of the time slots are CH0-CH31. In framing mode, time slot CH0 is used for frame synchronization, time slot CH16 is used for signaling, and the remai...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H04L29/06
CPCH04L69/03H04L69/08H04L69/26
Inventor 黄蒙常江朱伟王双伟丁炀超张婷
Owner 上海微波技术研究所(中国电子科技集团公司第五十研究所)
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com