Modeling and Analytical Study of Link Properties in Multihop Wireless Networks

• Published in: IEEE transactions on communications Vol. 60; no. 2; pp. 445 - 455
• Main Authors: Zhao, Ming, Li, Yujin, Wang, Wenye
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.02.2012; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Ad hoc networks; Analytical models; Applied sciences; Business and industry local networks; Channels; Equipments and installations; Exact sciences and technology; Fading; link dynamics; Links; Mathematical analysis; Mathematical models; Mobile communication; mobility models; Movements; network connectivity; Networks; Networks and services in france and abroad; Performance evaluation; Radio; Radiocommunications; Radiorelay links; routing performance; Shadow mapping; Spread spectrum communication; Studies; Systems, networks and services of telecommunications; Telecommunications; Telecommunications and information theory; Teleprocessing networks. Isdn; Transmission and modulation (techniques and equipments); Wireless networks; Fading; routing performance; Exponential distribution; mobility models; Wireless telecommunication; Transfer characteristic; Radio link; Routing; Ad hoc networks; Modeling; Information transmission; Upper bound; Multihop network; Simulation; V transmission; link dynamics; network connectivity; Wireless network; Connectedness; Radio transmission; Ad hoc network
• ISSN: 0090-6778; 1558-0857
• DOI: 10.1109/TCOMM.2012.010512.090739

The radio link between a pair of wireless nodes is determined by radio channels, transmission range, node mobility and node-pair distance, which form a set of random factors in multihop wireless networks. The properties of such radio links can be characterized by link lifetime, residual link lifetime and link change rate, which, in fact, have been widely used for network design and performance evaluation. In this paper, we take a new modeling approach that captures the dynamics of radio channels and node movements in small-scale. More specifically, distance transition probability matrix is designed in order to describe the joint effects of dynamic transmission range due to radio channel fading and relative distance of a node-pair resulting from random movements. We find that the PDF of link lifetime can be approximated by an exponential distribution with parameter characterized by the ratio of average node speed \bar{V} to effective transmission range R_e. To further understand the implication of link properties, analytical results are used to investigate the upper bound of network connectivity and the associated network performance is evaluated by extensive simulations.