Research And Realization Of Wireless Communication System In Ad Hoc Model-based Home Network

With the development of Internet, especially the development of wireless technology, the set model of IHN (Intelligent Home Networks) has become various. The method of wireless accessing Internet whereven and whenever is the ultimate tendency of IHN development, and the development of home network also shows its diversity. How to coordinate the relationships among the intelligent devices in home network and how to control devices conveniently have become a problem which must be dealt with in the home network development.Through the research of Ad hoc technology and the development of home network, this thesis provides the design of an Ad hoc Model-based Architecture of IHN. In this system which basic network is composed of servel cellular subnet, the device (node) in the home network can join and leave the network freely. Nodes in this network are distinctly divided into two types: Mobile Base Node (MBN) and Mobile Slave Node (MSN). The MBN consists of a combination of an AP that operates in the infrastructure mode, LAN interface, and WLAN card. The MSN, which uses a wireless module, can only communicate with other nodes via its associated MBN. Besides its own function, the MBN node (device) in subnet has an additional ability of working as a router.The most distinction between ad hoc wireless network and traditional wireless network is that the fromer deals with the forwarding and handling the information by network nodes. So the network is made of a full-distributed structure, which is suitable for the control of far distance.Based on the hardware of ARM9 platform, we introduce an operation system to realize the Ad hoc network and manage the home device. Linux is an embedded operation system we can get it freely, its kernel include TCP/IP protocol which can satisfy the demand of connection between Ad hoc network and Internet. So we select Linux as the source manage platform. When Linux start, the router pogram could be run automatically by Linux, and the user can control the home device by the GUI interface meantime.The thesis has described the build of ARM9 hardware platform, porting of Linux and programming drivers of peripheral equipment and wireless network module in details. As the emphases of research and realization, based on drivers of wireless module under Linux, we realized the structure of Ad hoc model-based wireless home network which introducedAODV (Ad hoc On-Demand Vector) routing protocol. In this paper, we design the wireless home network and the terminal grounded on Linux and ARM9.