CUED Publications database

Packet Speed and Cost in Mobile Wireless Delay-Tolerant Networks

Cavallari, R and Toumpis, S and Verdone, R and Kontoyiannis, I (2020) Packet Speed and Cost in Mobile Wireless Delay-Tolerant Networks. IEEE Transactions on Information Theory, 66. pp. 5683-5702. ISSN 0018-9448

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Abstract

© 1963-2012 IEEE. A mobile wireless delay-tolerant network (DTN) model is proposed and analyzed, in which infinitely many nodes are initially placed on $\mathbb {R}^{2}$ according to a uniform Poisson point process (PPP) and subsequently travel, independently of each other, along trajectories comprised of line segments, changing travel direction at time instances that form a Poisson process, each time selecting a new travel direction from an arbitrary distribution; all nodes maintain constant speed. A single information packet is traveling towards a given direction using both wireless transmissions and sojourns on node buffers, according to a member of a class of utility-based routing rules. For this model, we compute the long-term averages of the speed with which the packet travels towards its destination and the rate with which the wireless transmission cost accumulates. Because of the complexity of the problem, we employ two intuitive, simplifying approximations; simulations show that the approximation error is typically small. Our results provide intuition on the fundamental trade-off that exists in mobile wireless DTNs between the packet speed and the packet delivery cost. The framework developed here is both general and versatile, and can be used as a starting point for further investigation.

Item Type: Article
Uncontrolled Keywords: cs.IT cs.IT math.IT
Subjects: UNSPECIFIED
Divisions: Div F > Signal Processing and Communications
Depositing User: Cron Job
Date Deposited: 19 Apr 2018 01:44
Last Modified: 20 Oct 2020 02:42
DOI: 10.1109/TIT.2020.3009690