A Novel Negative Multinomial Distribution Based Energy-Efficient Reputation Modeling for Wireless Sensor Networks(WSNs)  

作　　者：魏哲 王芳 

机构地区：[1]School of Computer Science,Sichuan University [2]School of Computer Science,Civil Aviation Flight University of China

出　　处：《Journal of Donghua University(English Edition)》2012年第2期153-156,共4页东华大学学报（英文版）

基　　金：National Natural Science Foundations of China (No.61073177,60905037)

摘　　要：In wireless sensor networks(WSNs),nodes are usually powered by batteries.Since the energy consumption directly impacts the network lifespan,energy saving is a vital issue in WSNs,especially in the designing phase of cryptographic algorithms.As a complementary mechanism,reputation has been applied to WSNs.Different from most reputation schemes that were based on beta distribution,negative multinomial distribution was deduced and its feasibility in the reputation modeling was proved.Through comparison tests with beta distribution based reputation in terms of the update computation,results show that the proposed method in this research is more energy-efficient for the reputation update and thus can better prolong the lifespan of WSNs.In wirdess sensor networks （ WSNs）, nodes are usually powered by batteries. Since the energy consumption directly impacts the network lifespan, energy saving is a vital issue in WSNs, especially in the designing phase of cryptographic algorithms. As a complementary mechanism, reputation has been applied to WSNs. Different from most reputation schemes that were based on beta distribution, negative multinomial distribution was deduced and its feasibility in the reputation modeling was proved. Through comparison tests with beta distribution based reputation in terms of the update computation, results show that the proposed method in this research is more energy-efficient for the reputation update and thus can better prolong the lifespan of WSNs.

关 键 词：WIRELESS sensor networks(WSNs) NEGATIVE MULTINOMIAL distribution REPUTATION ENERGY-EFFICIENT 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]