%0 Journal Article
%T Using Physical-level Context Awareness to Improve Service Ranking in Wireless Sensor Network
%A Jun Lei
%A XingHua Yang
%A YinLong Liu
%A YiFang Qin
%J Journal of Networks
%D 2012
%I Academy Publisher
%R 10.4304/jnw.7.6.926-934
%X With the fast-pacing deployment of wireless sensor network(WSN) services, service ranking becomes more and more important. However, current service ranking methods mostly ignore the physical-level quality variation, making service ranking inaccurate. To address this problem, in this paper we propose a novel QoS-based ranking approach for WSN services, which employs the physical-level context awareness to improve the WSN service ranking. We separately calculate QoS assessment of each candidate service from users' perspective and physical-level context perspective. Through characterizing the impact of physical quality variation on QoS performance and user QoS assessment, a new scheme of QoS performance weighting is proposed to rank WSN candidate services. Experiments results show the effectiveness of our approach.
%K Wireless Sensor Network Service
%K Context awareness
%K Service Ranking
%K QoS
%U http://ojs.academypublisher.com/index.php/jnw/article/view/6670