Research On Embedded System Of Wireless Communication Technology Based On GPRS

Along with the rapid development of communications and computer technologies, the remote data transmission has been relatively well resolved.Comparing with the traditional cable method,the wireless remote data collection which can be free from geographical environments,climate,and time limits;can be saved as records;can also be rechecked according to their records has more advantages.And those advantages has been full used in electricity,water,oil,transportation etc.However,due to the difficulties in communication infrastructure construction and the higher complexity of the system,the developments of the system has been limited.With the rapid development of mobile communication technology,Chinese Mobile operators have constantly pushing the business of data transmission,and making the prices dropping.Particularly in the launch of GPRS data services,the needs of remote data acquisition and transmission areas has grown in a great number.The public have cast their eyes on the platform of the wireless data business.The GPRS data transmission can break the geographical restrictions,be fast transmitted and reasonable charged,so it is especially suitable for discontinuous, sudden and frequent data transfer.The traditional applications that based on GPRS are connected to the Internet,and sent the data to the Internet-connected PC for storage and handling.However,the GPRS become more and more diversified,many enterprises would like to collect data in anytime and anywhere.So this paper proposes a research of embedded wireless networks in response to this demand,which can be used in monitoring filed when man move.The purpose of this paper is to design a GPRS-based wireless data transmission system based onμC/OS-Ⅱoperating system,to make it real in the mobile data network in point-to-point transmission.This paper use APN,which can realize IP address and bind SIM cards,to enhance the security of data transmission.This paper, firstly,discusses the wireless network series and its significance,and explains the GPRS technology on that base.Secondly makes researching on the GPRS data transmission and the use of the AT command.And then,Goes deeply in the microprocessor S3C44B0,GPRS module,MC35i equipment and the other external connections.Finally,this paper focuses on the needs of GPRS communications PPP, TCP/IP protocol,and also these agreements data formats and interactive processes and methods. This paper studies the system with small size,low price and high security data, mobile etc.It can mach various types of applications which required ambulation,and a large quantity of data transmission...