An Adaptive Contact Probing Scheme of Delay-tolerant Mobility Sensor Network
Yang Kui-wu①② Zheng Kang-feng① Niu Xin-xin① Yang Yi-xian① Guo Shi-ze①
①(ISC of State Key Lab of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China) ②(Institute of Electronic Technology, Information Engineering University, Zhengzhou 450004, China)
Abstract：The efficiency of contact probing has an important impact on the performance of Delay-Tolerant Mobility Sensor Network (DTMSN). An Adaptive Contact Probing Scheme (ACPS) of DTMSN is proposed, which is based on the study of stochastic properties?of Random Way-Point (RWP) mobility model. The main idea of ACPS is to adjust adaptively the time and the number of contact probing according to the arrival rate of contact arrival process. The scheme can effectively deduce the probing energy cost and contact discovery delay by improving the probe efficiency and accuracy. Simulation results show that the proposed ACPS has higher discovery ratio and lower discovery delay than the Fixed-cycle Probing Scheme (FPS).
2011, Vol. 33 
