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Intermittently connected mobile networks (ICMNs) serve as an importantnetwork model for many critical applications. This paper focuses on acontinuous ICMN model where the pair-wise meeting process between network nodesfollows a homogeneous and independent Poisson process. This ICMN model is knownto serve as good approximations to a class of important ICMNs with mobilitymodels like random waypoint and random direction, so it is widely adopted inthe performance study of ICMNs. This paper studies the throughput capacity anddelay-throughput tradeoff in the considered ICMNs with Poisson meeting process.For the concerned ICMN, we first derive an exact expression of its throughputcapacity based on the pairwise meeting rate therein and analyze the expectedend-to-end packet delay under a routing algorithm that can achieve thethroughput capacity. We then explore the inherent tradeoff between delay andthroughput and establish a necessary condition for such tradeoff that holdsunder any routing algorithm in the ICMN. To illustrate the applicability of thetheoretical results, case studies are further conducted for the random waypointand random direction mobility models. Finally, simulation and numerical resultsare provided to verify the efficiency of our theoretical capacity/delay resultsand to illustrate our findings.

Capacity and Delay-Throughput Tradeoff in ICMNs with Poisson Meeting Process