Research On Optimization Of Mobilemulti-network Interconnection Platform

With the development of Internet technology, there are a large number of Internet technologies suitable for different environment. These networks have their own characteristics, especially Local Area Network, Wireless Local Area Network, 3G Networks, Wireless Sensor Network, Wireless Ad Hoc Network and Wireless Personal Area Network which develop rapidly. Because each network brings different convenient services to users, users can not live without these networks. Obviously, a single network has gradually unable to meet user demand for a wide range of data, users need to use many devices to access different networks, that giving users a great inconvenience. How to make a variety of network work cooperatively and exchange data between them become one of the hot topics in the field of information technology.In this paper, according to the characters of the six popular network, which including Local Area Network, Wireless Local Area Network, 3G Networks, Wireless Sensor Network, Wireless Ad Hoc Network and Wireless Personal Area Network, analyze the software and hardware technology of the interconnection of the six kind of network. And combined with the advantages and disadvantages of mobile multi-network integration platform, the new mobile multi-network interconnection platform is designed and realized. This new platform can access six network and seamless interoperate between them. And it has certain performance improvement with respect to the old one.This paper based on STM32 and FPGA, as the core processing, redesign the mobile Internet platform. New platform take full advantage of diverse control interface of STM32 and powerful computing capability of FPGA, it greatly reduces the difficulty of control peripherals and improve the network transmissi on speed. The u C/OS-II operating system is transplanted on STM32 to achieve real-time task scheduling. And the 1w IP protocol stack is transplanted to realize the TCP/IP communication in LAN. The data forwarding system is implemented on FPGA to control the serial device module. FPGA plays the role that extend hardware in the whole system and strengthen the scalability of the system. Design a new load balancing algorithms depending on the platform energy, current load and the number of connecting nodes. Design the complex multimode optimization algorithm to enhance the scalability of system. Setting up the software buffer to assist heterogeneous network data forwarding. Finally, the functional performance of the mobile multi-network is tested. The test results show that the Internet platform can achieve the basic functions of interconnection between the six network, and its network transmission speed, load balancing algorithm, composite multi-mode algorithm has been greatly improved with the respect to the old mobile network integration platform.