Research And Implementation Of Air Interface Protocol Analysis For Digital Radio

Compared with analog radio,digital radio has the characteristics of high frequency utilization,good voice quality,strong business ability,easy to encrypt and so on.It has become an inevitable trend of radio development.At present,domestic and foreign are lack of analysis equipment for digital radio air interface protocol,thus it's hard to effectively analysis the air interface protocol information of digital radio.The analysis of digital radio's air interface protocol can implement the intercommunity test of different manufacturers' digital radio.Therefore,the research and implementation of digital radio air interface protocol analysis is of great significance.First of all,based on the overviews of the domestic and foreign research status for air interface protocol analysis,the stack structure of digital radio air interface protocol is analyzed,the burst structure and frame structure of digital radio interface protocol are described,and the structure of digital radio air interface protocol monitoring system is given in this paper.Next,the main process of air interface protocol analysis software for digital radio,the main process and sub process of data packet analysis of air interface protocol,the interface between protocol analysis software and protocol monitor,the interfaces between the data packet analysis module and packet filtering module are designed.Then,to the air interface protocol analysis software for digital radio is developed in the Visual Studio 2010 software platform by using MFC,meanwhile,based on the Wireshark plugin technology,the air interface protocol plugin for digital radio is developed by using C language.These software and plugin realize the air interface protocol analysis function of short data service,voice service and control information for digital radio.Finally,the digital radio's air interface protocol analysis software for short data information analysis function,voice information analysis function,control information analysis function are tested,the test results show that the digital radio's air interface protocol analysis software implement the analysis function of short data information,voice information and control information for digital radio air interface protocol,which meet the design request.