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Context 1
... simulation scenario depicts a vehicle entering from a random location, restricted to travel along a grid of streets and intersections. The vehicle follows a random path inside a grid, according to the Manhattan mobility model, as shown in Figure 5. The event-driven simulator generates different scenarios, whose characteristics are similar to previous heterogeneous scenarios described in . ...
Context 2
... event-driven simulator generates different scenarios, whose characteristics are similar to previous heterogeneous scenarios described in . Figure 5 [Mbps], respectively. S-VHO network performance have been validated in terms of (i) throughput, (ii) jitter, and (iii) handover frequency. ...
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Owing to the explosive growth of requirements of rapid emergency communication response and accurate observation services, airborne communication networks (ACNs) have received much attention from both industry and academia. ACNs are subject to heterogeneous networks that are engineered to utilize satellites, high-altitude platforms (HAPs), and low-...
Citations
... This creates the basis to derive strategies and protocols for dynamic switching between the considered technologies. Related work include techniques to enable seamless connectivity in vehicular ad-hoc networks using 3G connectivity [8], multi-hop cluster-based hybrid architectures [9] as well as Quality of Sevice (QoS)-optimizing approaches using Fuzzy logic [10]. In this paper, a dynamic data traffic algorithm to enable hybrid vehicular communication is proposed and evaluated with respect to the statistics of cell load and channel congestion of LTE and 802.11p, respectively. ...
... The former approach relies excessively on the accuracy of prior knowledge such as call duration and hot-spot dwell time. Whereas the later approach results in higher VHO frequency [7]. ...
... Anna et. al. in [7] proposed a switching protocol decision metrics based on a cost function which is measured by taking into account delay and radio resource utilization time associated with the alternative paths. The VHO decision based on QoS metrics which is measured in terms of multiple performance criteria results in higher number of VHOs (i.e., ping-pong effect) which often leads to protocol instability [9]. ...
The increasing number of wireless communications technologies and standards bring immense opportunities and challenges to provide seamless connectivity in Hybrid Vehicular Networks (HVNs). HVNs could not only enhance existing applications but could also spur an array of new services. However, due to sheer number of use cases and applications with diverse and stringent QoS performance requirements it is very critical to efficiently decide on which radio access technology (RAT) to select. In this paper we proposed a QoS-aware RAT selection algorithm for HVN. The proposed algorithm switches between IEEE 802.11p based ad hoc network and LTE cellular network by considering network load and application's QoS requirements. The simulation study shows that the proposed mechanism results in lower number of vertical handover (VHO) which in turn causes significant performance improvements in terms of latency, packet delivery ratio and application-level throughput.
... Cooperation between OBUs can provide good position estimates in V2V communication45. However, the quick topology changes required by V2V approaches make V2I communication be the preferred option for in-car navigation in harsh environments [6]. In V2I communication, the position of an OBU (the target) can be estimated from range-related measurements taken on the radio-frequency signals transmitted to and from the RSUs (the anchors) [7]. ...
... It follows that interconnectivity and seamless connectivity issues in vehicular ad hoc networks represent a challenge for many researchers. Solutions based on both horizontal and vertical handover procedures have been largely investigated in recent works [4], [5], [6]. ...
