The Designment And Implementation Of Image Wireless Transmission Based On APN Dedicated Line

Wireless image transmission can be understood as the transmission of wireless images.The application areas of wireless image transmission include analog transmission,digital transmission/network radio,GSM/GPRS,CDMA,digital microwave(most of this is spread spectrum microwave),WLAN(wireless network),COFDM(orthogonal frequency division multiplexing),etc.At present,wireless image transmission by the traditional mode like CDMA or GSM/GPRS can not satisfy the transmission rate of image transmission,and the current domestic implementation of wireless image transmission mainly use 3G network or WLAN mode of transmission.The image frame number is low and the transmission range is small,and with transmission based broadband is lack of the full coverage and portability.The traditional public network transmission has the shortcomings of network congestion and security.The wireless and wired transmission for procurement projects of Chengdu Police is an important part of improving the Chengdu Police flat command system,will provide the data channel for the monitoring system of Chengdu Police purchasing projects.It need the high security to achieve data transmission.This article mainly describe the designment and implementation from the terminal to the police platform,which is based on the APN transmission:1.To discuss the basic architecture of wireless image transmission,and propose fusion scheme with high transmission quality and excellent safety.This scheme not only satisfy the mobility of terminals but also ensure that the transmission information is not intercepted and stolen,and make mobile network and cable network become unicom.2.To research the mode of dedicated line network so that there are characteristics with the excellent safety,high stability and smooth promotion to guarantee the ductility of the latter part of the project.While the establishment of dual hot standby routing ensure the stability of data transmission.To provide the network firewall that guaranteeing the security transmission link.Combined with the tunnel mode encryption,to ensure the end-to-end security in the process of data transmission.3.To research the transmission of wireless APN with dedicated network,and propose the transmission mode of information transmission through dedicated network is put forward with the user authentication as the core.The security of the terminal and platform transmission is guaranteed.4.To realize and test the wireless image transmission system,and test the wireless transmission effect by the video surveillance management system.So that the high-definition video transmission function of the mobile terminal is realized,and the test results can satisfy the design requirements.