基于分层的传感器网络密钥预分配方案  

Key predistribution scheme for sensor networks based on layering

作　　者：周波清[1,2] 李素君[2] 羊四清[2] 

机构地区：[1]中南大学信息科学与工程学院,湖南长沙410083 [2]湖南人文科技学院信息科学与工程系,湖南娄底417000

出　　处：《传感器与微系统》2014年第9期107-109,113,共4页Transducer and Microsystem Technologies

基　　金：国家自然科学基金资助项目(11071272);湖南人文科技学院青年基金资助项目(2010QN02);湖南省教育厅优秀青年基金资助项目(13B057);湖南省教育厅重点基金资助项目(10A062;11A056);湖南省计算机应用技术"十二五"重点学科资助项目;湖南人文科技学院计算机科学与技术重点学科项目

摘　　要：在基于部署知识的密钥预分配方案中,随着节点部署误差的增大,网络的局部连通率将显著下降,从而导致网络的全局连通率下降。为了减轻部署误差对方案性能的影响,提出了一种新的密钥预分配模型。该模型将部署区域划分成基本区和联系区,联系区根据离基本区的远近分层,并在此基础上提出了一种新的密钥预分配方案。分析和模拟表明:与直接利用部署知识的方案相比,基于分层的密钥管理方案可以显著地提高网络的性能。In pre-distribution scheme based on deployment knowledge, with increasing of node deployment error, local connectivity rae of network will decrease, as a result, global connectivity rate of network decreases. To reduce influence of deployment error on performances of schemes, propose a new model for key pre-distribution. This model divide deployment area into two parts：basic areas and interconnectional areas, and interconnectional areas are layered according to distance to basic areas, and a new key pre-distribution scheme is proposed on the basis of this. Analysis and simulation show that the key management scheme based on layering can significantly improve performances of networks, compared with the scheme which uses deployment knowledge directly.

关 键 词：传感器网络 部署知识 分层 共享密钥 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]