A Review on Wireless Sensor Networks

Abstract- Wireless sensor networks (WSNs) enable new applications and require non-conventional paradigms for protocol design due to several constraints. Owing to the requirement for low device complexity together with low energy consumption (i.e., long network lifetime), a proper balance between communication and signal/data processing capabilities must be found. This motivates a huge effort in research activities, standardization process, and industrial investments on this field since the last decade. We consider routing security in wireless sensor networks Trends and possible evolutions are traced. Emphasis is given to the IEEE802.15.4 technology, which enable many applications of WSN. In this paper we discuss about the wireless sensor network, its introduction, architecture of protocol design of Wireless Sensor Network and its applications. Advances in sensor technology and computer networks have enabled distributed sensor networks (DSNs) to evolve from small clusters of large sensors to large swarms of micro sensors, from fixed sensor nodes to mobile nodes, from wired communications to wireless communications, from static network topology to dynamically changing topology. Keywords- Wireless sensor network, routing, protocol, networks. I