The Design And Development Of The Platform For Experimental Teaching And Innovation Based On 4G(TD-LTE)Mobile Communication System

Current communication technology is developing rapidly,especially in mobile communications,internet of things and mobile Internet.Due to the technical updating and industry competition,the communications industry changes the demand of the recruitment.Communication enterprises are much more favored those who can quickly join the work and has ability to make contribution.But the teaching method of electronic communications specialty in collage is still mainly in theory,supported experimental teaching are mostly for showing principle and verification.This makes the students difficult to have access to new knowledge and technology in the current communications market.So there is a problem between the direction of the demand of market for talent and the talent training mode in school.Through the design of new experimental equipment,it's expected to improve the school experiment teaching mode,strengthen the experimental teaching,and cultivate talents to meet the need of the current market better.This paper designs and develops an experimental platform based on the current commercial network architecture.This platform integrated the key equipment and technology of Mobile Internet and Internet of things.The overall structure consist of core network,access network and terminal,and the terminal portion is divided into embedded module,4G module and network module due to the function.Each module can used as separate part for cognitive and principle learning,and also can combine different module to show the typical application of hot technology,cultivate the ability of solving the practical problems for engineering students.The main work of the design and development of the platform is as following:1 According to the hotspot technology in communications industry such as 4G,mobile Internet and Internet of things to determine the 4G business network as the platform's framework.And human-computer interaction part of the mobile Internet and the sensing layer devices of Internet of things are integrated into the terminal part.2 Completed the hardware circuit design of the Internet of things module on terminal part,use a MCU as the core node,equipped with a common sensor,and extension interface.3 Developed the 4G module driver for the embedded module,and designed terminal application software and signaling analysis software for learning AT command and 4G module and base station signaling interaction process.4 Design of the experimental teaching content and comprehensive application routines based on the platform,it help the teacher easy to carry out the experimental teaching and engineering application of learning.