The status quo and development of network architecture;

Knowledge infrastructure-based network architecture with multiple interaction planes;

Formal network architecture model based on process algebra;

Research of Ad hoc network structure;

The technology and network system structure are analysed in the paper.

According to the present research situation of Ad hoc network,the paper is discussed network system structure,routing protocol,network security,power control and energy conservation technology in Ad hoc network.

It expounds practicing method of local network such as network system structure, topological structure, network system software and security management of network a.