On the Connectivity of Vehicular Ad Hoc Network Under Various Mobility Scenarios

Khan, Zahid Mahmood; Fan, Pingzhi; Fang, Sangsha

doi:10.1109/access.2017.2761551

Cited by 34 publications

(22 citation statements)

References 28 publications

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“…Due to the dynamic changing topology and various densities which depend on the time of day or day of the week, a vehicular network is expected to suffer from repetitive network partitioning and link disruptions thus making the messages exchanging difficult among vehicles. As a result, the connectivity plays a key role in the improvement of packet delivery ratio and throughput [25]. However, traditional methods often utilize the connection probability of all vehicles on one lane, say the probability that each vehicle is within the radio range of the adjacent one to indicate the network connectivity, without taking the connection distance of vehicles into consideration.…”

Section: A Connection Qualitymentioning

confidence: 99%

“…Because of the mobility and distribution of nodes, there may be some partitioned islands of grouped vehicles along the routing path, which makes it difficult to transfer messages among vehicles. So the network connectivity becomes the main performance metric for inter-vehicle communications, particularly at a light load [25]. However, just utilizing the connectivity to select the route is not enough.…”

Section: Optimized Path Selection Algorithmmentioning

confidence: 99%

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ASGR: An Artificial Spider-Web-Based Geographic Routing in Heterogeneous Vehicular Networks

Chen

Liu

Qiu

et al. 2019

IEEE Trans. Intell. Transport. Syst.

102

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Recently, vehicular ad hoc networks (VANETs) have been attracting significant attention for their potential for guaranteeing road safety and improving traffic comfort. Due to high mobility and frequent link disconnections, it becomes quite challenging to establish a reliable route for delivering packets in VANETs. To deal with these challenges, an artificial spider geographic routing in urban VAENTs (ASGR) is proposed in this paper. First, from the point of bionic view, we construct the spider web based on the network topology to initially select the feasible paths to the destination using artificial spiders. Next, the connection-quality model and transmission-latency model are established to generate the routing selection metric to choose the best route from all the feasible paths. At last, a selective forwarding scheme is presented to effectively forward the packets in the selected route, by taking into account the nodal movement and signal propagation characteristics. Finally, we implement our protocol on NS2 with different complexity maps and simulation parameters. Numerical results demonstrate that, compared with the existing schemes, when the packets generate speed, the number of vehicles and number of connections are varying, our proposed ASGR still performs best in terms of packet delivery ratio and average transmission delay with an up to 15% and 94% improvement, respectively.Index Terms-Vehicular ad hoc networks, routing protocol, artificial spider-web, connection quality, latency model, selective forwarding.

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Section: A Connection Qualitymentioning

confidence: 99%

Section: Optimized Path Selection Algorithmmentioning

confidence: 99%

ASGR: An Artificial Spider-Web-Based Geographic Routing in Heterogeneous Vehicular Networks

Chen

Liu

Qiu

et al. 2019

IEEE Trans. Intell. Transport. Syst.

102

View full text Add to dashboard Cite

show abstract

“…Vehicular connectivity depends on transmission range R and spatial density of neighborhood vehicles. The connectivity probability P c , that at-least k vehicles are connected on a road segment s is given as [28]…”

Section: B: K-connectivity Factor (Kcf)mentioning

confidence: 99%

“…Vehicles position and strength of connectivity concerning cluster size and transmission ranges are essential arguments of vehicular connectivity [28]. Since connectivity is a good factor, hence it can be used as an alternate to leadership factor.…”

Section: Introductionmentioning

confidence: 99%

Two-Level Cluster Based Routing Scheme for 5G V2X Communication

et al. 2019

Self Cite

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Efficient data dissemination is a big challenge for both IEEE 802.11p (MAC contentions problem) and cellular vehicle-to-everything communications (limited bandwidth in the high dense network). In this paper, a two-level clustering scheme is proposed for efficient data dissemination in 5G V2X communications. In the proposed protocol, level-1 cluster heads (L1CHs) are selected by a fuzzy logic algorithm using three factors, i.e., relative velocity factor, k-connectivity factor, and link reliability factor. The slide link vehicle-to-vehicle (V2V) or the Third Generation Partnership Project V2V overcomes the MAC contention problem in L1CHs selections. Next, the level-2 cluster heads are selected by an improved Q-learning aiming to reduce the number of iterations in the gateway selection to LTE base station. The proposed scheme is evaluated under different network conditions showing that our protocol achieves good results compared to the existing schemes. INDEX TERMS Two level clustering, cluster head, connectivity, link reliability, efficient data dissemination.

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“…As a result, the previous connection between aerial nodes maybe is interrupted which will largely influence the efficiency of rescue. Hence, a reliable aerial backbone network is required [6].…”

Section: Introductionmentioning

confidence: 99%

The Novel Mobility Models Based on Spiral Line for Aerial Backbone Networks

Sun

Shi

2020

IEEE Access

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With the convenience and flexibility, the UAV has received more attention in the search and rescue. Due to inherent mobility of UAV, the aerial backbone network maybe suffers some problems of dynamics of connectivity, such as uncertain delay jitter or occasional connection interruption. However, the existing mobility model could not accurately capture aerial mobility without the smooth trajectory and the capacity of rapid coverage. In this paper, we propose a novel mobility model based on spiral line (SLMM) for aerial backbone network. Firstly, we describe the background and related work. Then, we propose the basic concept and advantages of SLMM. In addition, we investigate the mathematical feature of SLMM. Besides, we propose some novel mobility metrics and analyze quantitatively the mobility feature of SLMM through simulation. Finally, we evaluate the network performance under the SLMM. The result show that the SLMM has the smooth trajectory and the uniform distribution of spatial nodes at steady state. In addition, covering the zone of area of 16pi the aerial node merely take almost 27s under the SLMM. Meanwhile, the convergence time could be adjusted by changing the internal parameters. Moreover, the aerial backbone network could approach the throughput of 0.43Mb/s, the end-to-end delay of 4.42ms and the packet loss rate of nearly 0.00% • under the SLMM, and the best choice of routing strategy is the AODV protocol. We believe that the SLMM as a significant supplement of mobility model can provide the helpful guideline in the design and analysis of aerial backbone network. INDEX TERMS Aerial backbone network, mobility model, rapid coverage, smooth trajectory.

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On the Connectivity of Vehicular Ad Hoc Network Under Various Mobility Scenarios

Cited by 34 publications

References 28 publications

ASGR: An Artificial Spider-Web-Based Geographic Routing in Heterogeneous Vehicular Networks

ASGR: An Artificial Spider-Web-Based Geographic Routing in Heterogeneous Vehicular Networks

Two-Level Cluster Based Routing Scheme for 5G V2X Communication

The Novel Mobility Models Based on Spiral Line for Aerial Backbone Networks

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