A LOW-COST PROTOCOL IN SENSOR NETWORK UBIQUITOUS ENVIRONMENT

  • Lee Dong-heui (Dept. fo Network Security Laboratoy Chungbuk National Univ.) ;
  • Cho Young-bok (Dept. fo Network Security Laboratoy Chungbuk National Univ.) ;
  • Kim Dong-myung (Dept. fo Network Security Laboratoy Chungbuk National Univ.) ;
  • Lee Sang-ho (Dept. fo Network Security Laboratoy Chungbuk National Univ.)
  • Published : 2005.10.01

Abstract

In a ubiquitous environment made up of multiple sensors, most sensors participate in communications with limited battery, and the sensor node isn't able to participate in communications when all the battery is used up. When an existing authentication method is used for the sensor node which has to participate in a long term communication with limited battery, it creates a problem by making the length of network maintenance or sensor node's operation time relatively shorte. Therefore, a network structure where RM (Register Manager) node and AM (Authentication Manager) node are imported to solve the energy consumption problem during a communication process is presented in this thesis. This offers a low power protocol based on safety through a mutual authentication during communications. Through registration and authentication manager nodes, each sensor nodes are ensured of safety and the algorithm of key's generation, encryption/descramble and authentication is processed with faster operation speed. So the amount of electricity used up during the communications between sensor nodes has been evaluated. In case of the amount of electrical usage, an average of $34.783\%$ for the same subnet and 36.855 for communications with two different subnets, are reduced. The proposed method is a protocol which maintains the limited battery for a long time to increase the effectiveness of energy usage in sensor nodes and can also increase the participation rate of communication by sensor nodes.

Keywords