On Residual Path Lifetime in Mobile Networks

• Published in: IEEE communications letters Vol. 20; no. 3; pp. 582 - 585
• Main Authors: Zhinan Li, Haas, Zygmunt J.
• Format: Journal Article
• Language: English
• Published: New York IEEE 01-03-2016; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Correlation; Estimation; link lifetime prediction; MANET; Mobile ad hoc networks; Mobile computing; path lifetime prediction; Prediction algorithms; Probability density function; residual link lifetime; path lifetime prediction; MANET; link lifetime prediction; residual link lifetime
• ISSN: 1089-7798; 1558-2558
• DOI: 10.1109/LCOMM.2016.2520467

In this letter, we investigate the residual link lifetime (RLL) in a mobile ad hoc network, such as a vehicular network. Although, owing to the underlying mobility of the network nodes, the RLLs of adjacent links are highly correlated, yet previous works typically neglected such correlation. In contrast, our study is based on an accurate modeling of the relative distances and speeds between neighboring mobile nodes. Firstly, a scenario is presented that demonstrates the dependence of RLLs of two adjacent links. We then derive the joint probability distribution of the RLLs of two adjacent links in terms of their parameters. Our model shows that neglecting the correlation between adjacent links results in serious overestimation of the path's lifetime. Simulation is used to verify our model.