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Ítem ICAR: Intersection-based connectivity aware routing in vehicular ad hoc networks(IEEE, 2013-06-09) Shen, Xuemin ShermanIn this paper, we propose an intersection-based connectivity-aware routing protocol (iCAR) for vehicular ad hoc networks (VANETs) to enable infotainment and interactive applications, as well as multi-hop Internet access in urban environments. iCAR is a novel protocol that takes into consideration real-time vehicular traffic information and the experienced packet delivery delay per road, in order to improve the routing performance by dynamically selecting roads with a guaranteed connectivity and a reduced delivery delay. This is achieved by deploying a microscopic view of vehicles location to proactively estimate roads connectivity and the minimum link lifetime per road. Detailed analysis and simulation-based evaluations show that iCAR significantly improves the network performance in terms of packet delivery ratio and end-to-end delay with a negligible cost of communication overhead. © 2013 IEEE.Ítem Evaluation of mesh-under and route-over routing strategies in AMI systems(IEEE, 2012-05-16) scespedes@icesi.edu.coThe introduction of smart electric networks is fundamentally based on the integration of the electric grid with an intelligent and bidirectional communications network. As part of such communications network, the metering infrastructure is nowadays being automatized, so that the exchange of traffic between utilities and consumers happens in an efficient way. In this paper, we focus on the problem of routing in advance metering infrastructure (AMI) networks, and perform a qualitative comparison between the mesh-under and route-over routing strategies within the scope of AMI. The specific routing requirements for AMI are identified, and an evaluation of the implications of both routing strategies on those requirements is performed, taking into account issues such as: scalability, end-to-end delay, packet fragmentation, and retransmissions. © 2012 IEEE.
Ítem Platoon-based cyclists cooperative system(IEEE, 2015-12-16) Salamanca, JuanBicycle use has steadily risen its share of total urban traffic over the last decade. This has been the result of city governments promotion of alternative forms of transportation, in the search for finding strategies that help reduce traffic congestion. Although benefits of cycling in congestion and pollution are concrete, in several cities the increment of cyclists has gotten to the point to overflow the infrastructure, deriving in safety risks and gridlocks due to the lack of explicit coordination among cyclists. This paper presents the integration of two strategies that so far have been considered completely independent: cooperative driving and cycling. Our project addresses the coordination of collective behavior of platoons of cyclists that could pervade dedicated express roads such as the London's 18 mile East-West Cycle Superhighway. The proposed platoon-based cyclists cooperative system can be defined as a networked cyber-physical system with an additional challenge related to the human factor.