Design And Implementation Of Wireless Ad Hoc Network And Private Network LTE Dual-mode Communication System

With the continuous development of the social and economy,mobile communication fleets and other communication systems need to achieve more and more functions,reliable and stable communication systems and intelligent equipment is the key to its development.Broadband mobile communication as the foundation of modern scheduling command all the more important.At present,broadband mobile communication systems mainly use Wi-Fi,LTE,WiMAX,wireless ad hoc networks and other communication methods.Various methods have their own advantages,but there are also problems that cannot be ignored.The Wi-Fi co-channel interference is serious,and the impact between the devices using the same technical system is more obvious.In actual use,wireless environment also differs in thousands ways,interference of the adjacent frequency will decrease the efficiency of data transmission;The LTE wireless public network has the characteristics of large transmission delay,easy data loss,and information security risks.At the same time,the WiMAX standardization work is progressing slowly,the air interface standard has not been completed,the network specification is lacking,the standard system is imperfect,and so on.In brief,a single communication system cannot meet the requirements of diverse functions?The subject designs and implements a terminal device based on wireless ad hoc network and private network LTE dual-mode communication system.The overall design of the system and the terminal equipment includes hardware,software,and network communication protocols.The network communication protocol includes the design of the self-organizing network of the physical layer,the MAC layer,and the network layer and the LTE subsystem system.The hardware design includes a power subsystem,an ad hoc network baseband subsystem,and a CPE baseband subsystem.The main work is as follows:1)Complete the design and implementation of the dual-mode communication system platform based on wireless ad hoc networks and private LTE networks.This platform uses the general-purpose baseband processor as the core to design the hardware of this project.Realize autonomous switching between the wireless ad hoc network and the dedicated LTE network.2)Completed the hardware architecture of the dual-mode system,including power subsystem,baseband processing subsystem,self-organizing network system,CPE system,and radio subsystem.3)Complete the design of the dual-mode software and network system,including the selection and adaptation of the physical layer,link layer,network layer and application layer protocols.4)The function verification and system integration test of the wireless ad hoc network and the private network LTE dual-mode communication system equipment are completed,and some performance tests are performed.This design realizes the wireless ad hoc network and private network LTE dual-mode communication system.The experiment proves that the system has perfect functions and stable performance,and meets the requirements of mobile communication for high bandwidth,low delay and high reliability(redundancy)of the network;In brief,it offers a reference to similar product in future?...