Research And Implementation, Distributed Corba-based Systems

On the fields of the applications of distributed network, the non-mobile network side, traditional client/server network processing mode has the problems of high cohesion and low re-building property. On the target of solving these problems and based on the remote control application background,this paper researches the specifications of CORBA, designs and implements the distributed remote control system based on CORBA.The implement results and the performance analysis indicate that this system can provide the solving scheme of large scale network applications. And on the wireless mobile network side, the field, which bases on the low bandwidth and high error-occurance environment, has the problems of transmation alliance on UTP adaptor layer.On the target of the problems,this paper also researches the specification of Wireless CORBA,and analyzed the properties of two high-reliance automatic re-transmation algorithms,and design an original system based on GIOP tunneling adaptor layer protocol.The emulation results and the performance analysis indicate that this solving shceme can enhance the performance and output rate of wireless mobile network.This paper's contents consist of four parts below.1. At the base of CORBA certification, using the UML method, and according to the distributed three-layer architecture, we design the distributed remote control system based on CORBA.2. At the base of research on TAO, ACE, we implement the integration and mutual-process on TAO and VC++ which in on Windows platform,and accomplish the distributed remote control system based on CORBA.3. At the base of analysis the Wireless CORBA specification, using Petri Network techniques to model the system, on the UDP transport layer at the wireless network, we design a UTP original system based on GIOP tunneling adaptor layer protocol.4. At the base of research on Wireless CORBA specification, we implement the high-reliance transport of UTP adaptor layer protocol based on GIOP tunneling, which emulates on the wireless mobile network emulation environment, and make the performance indication and data analysis of two automatic re-transmation algorithms GBN and SR.