Wireless Sensor Networks ( Wsn ) Is A Key Innovation For The Wireless Network Technology

1483 Words6 Pages
Abstract—Wireless sensor networks (WSN) is a key innovation for the wireless network technology. It generally has a large number of sensor nodes with a power unit, a sensing unit, a processing unit, a storage unit, and a wireless transmitter & receiver. They are more vulnerable to attack then wired ones due to its nature and resources limitations. So as to overcome this security problems we can different types of Key Distribution and Hierarchical WSN. This paper gives more solutions to all problems in security issues of the Networks. Keywords—wireless sensor network, distributed wireless sensor network, hierarchical wireless sensor network, key distribution, key pre-distribution, pair-wise keys, group-wise key, network keying. I.…show more content…
(ii) Resource limitations on sensor nodes. (iii) Lack if fixed infrastructure. (iv) High risk of physical attacks. (v) Unknown network topology prior to deployment. This is why it is tough to secure WSN. II. TERMS, DEFINITIONS AND NOTATIONS Terms used in this paper are as follows: —key: symmetric key which is used to secure communication among two sensor nodes. —pair-wise key: key which is used to unicast communication between a pair of sensor nodes. —group-wise key: key which is used to secure multicast communication among a group of sensor nodes . —network-wise key: key which is used to secure broadcast messages. III. NETWORK MODELS AND SECURITY REQUIREMENTS OF WSN There are generally 2 types of architectures in WSNs. (i) Hierarchical and (ii) Distributed. In a Hierarchical WSN, A base station is a gateway to another network with some other base station to a data processing and storage center, or a human interface node point. Base point takes data from sensors send it to processing unit and that data is sent to the human interface node point. Therefore, base stations are used as key distribution centers as they are connected every other node in network. Sensor nodes form a dense network in form of clusters where a cluster of sensors lying in a specific area may provide similar or close readings of data. Not all node gets the power from power unit few sensor nodes depend on the ad hoc communication to reach base stations.
Open Document