Reserch And Design Of Survivabie Topology For Wireless Sensor Networks

As the new information science research field, Wireless sensor network(WSN) can be defined as the perception of wireless communications, the core of its work for independent data collection, integration and transmission, to make the logical world and the real physical world integrated closely, and achieve the communication model of" any place, any time, any person, any matter ". It is one of the key technologies to achieve the qualitative change of information development, and an important part of the internet of things as represented by the information revolution of the third wave.WSN is different from traditional wireless Ad hoc networks, sensor nodes’ limited energy, its computing capacity and processing power is unable to IT equipment. So making energy conservation was the primary problem of WSN design. Limited topology information obtained by a single node, the node is a large-scale layout, study and put forward new demands on the network topology.In fact, some nodes will dead early because of certain factors in WSN. Mainly for exhausted power or a hardware failure in nature, as well as man-made intentional attacks, thereby dividing network topology, network lifetime. According to the two characteristics, puts forward the topological structure of the fault-tolerant and intrusion-tolerant ability research, make the network in which individual nodes at the time of death, continuing to provide users with a certain critical services; fault tolerant/intrusion tolerance capacity of WSN system, can be in the individual node death when normal work, can be said to be" sick" work, and as a person.," sick" work more easily make less survivability of network system, finally died, so how to make the system have the ability of" regeneration", WSN has become a new object of study, improve the whole system survivability.Firstly, this paper studies and analysis the energy saving topology, aiming at the existing LEACH algorithm clustering uneven improvement, proposed based on the node energy balanced clustering algorithm BBNCEC, the cluster energy approximation to share to all nodes, balance network load, prolong the network life. And then introduces the topology of the fault-tolerant and intrusion-tolerant problems, finally, renewable information technology, discuss plane network coverage holes repair strategy, and put forward the best repair location algorithm, using a mobile node repair, the WSN system renewable, the improved algorithm are proved effective in improving WSN topology survivability in theory and MATLAB simulation In this paper.