当前位置: X-MOL 学术Veh. Commun. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Analysis of mobility speed impact on end-to-end communication performance in VANETs
Vehicular Communications ( IF 5.8 ) Pub Date : 2020-06-16 , DOI: 10.1016/j.vehcom.2020.100278
Osama Rehman , Rehan Qureshi , Mohamed Ould-Khaoua , Moazzam Fareed Niazi

Vehicular ad hoc networks (VANETs) have the potential to enable communication among vehicles either directly using a vehicle-to-vehicle (V2V) communication model or through a road side unit (RSU) while using a vehicle-to-infrastructure (V2I) communication model. In multi-hop messaging, end-to-end (E2E) communication delay and messages reachability are essential performance indicators for VANET applications, which in-fact are critical criteria for safety related messaging services. Several investigations have been carried on the impact of different cars mobility patterns on communication performance in VANETs and over different road networks. However, and to the best of our knowledge, a study aiming towards the analysis of mobility speed differences and their impact on E2E delays and messages reachability has not been thoroughly investigated for sender-oriented messaging schemes in VANETs. This paper evaluates the impact of speed differences among vehicles over the performance of two widely adopted classes of messaging schemes in VANETs, namely the furthest distance and link quality based schemes. The considered schemes are devised using a sender-oriented relay selection mechanism due to its efficient utilization of channel bandwidth. Simulation experiments are performed over two mobility speed scenarios with the first depicting a small speed difference among vehicles while the other depicting a large difference in speed. Analysis of the obtained results reveals the following major findings. In scenarios with small speed differences, the furthest distance scheme exhibits lower E2E delays when compared to link quality based scheme with a difference of up to 29.5 msec. Conversely, large differences in mobility speed have noticeable adverse effects on furthest distance scheme resulting into it having higher E2E delays as compared to link quality scheme, with a difference of up to 127.43 msec. In-terms of message reachability, the link quality scheme prominently outperforms the further distance scheme in both speed difference scenarios. Consequently, the link quality scheme shows robustness towards the adverse effects resulting from large differences in mobility speed while further distance scheme struggles to do so.



中文翻译:

分析移动速度对VANET中端到端通信性能的影响

车载自组织网络(VANET)具有直接使用车对车(V2V)通信模型或通过路边单元(RSU)进行车辆之间通信的潜力,而使用车对基础设施(V2I)通信模型。在多跳消息传递中,端到端(E2E)通信延迟和消息可到达性是VANET应用程序的基本性能指标,而这些实际上是与安全相关的消息传递服务的关键标准。对于VANET和不同道路网络中不同汽车出行方式对通信性能的影响,已经进行了一些调查。但是,据我们所知,一项针对移动速度差异及其对端到端延迟和消息可到达性影响的分析研究尚未针对VANET中面向发送者的消息传递方案进行彻底研究。本文评估了车辆之间的速度差异对VANET中两种广泛采用的消息传递方案(即最远距离和基于链路质量的方案)的性能的影响。所考虑的方案是使用面向发送者的中继选择机制设计的,因为它可以有效利用信道带宽。仿真实验是在两种移动速度方案中进行的,第一种方案描述了车辆之间的小速度差异,而另一种方案描述了速度上的较大差异。对获得的结果的分析揭示了以下主要发现。在速度差异较小的情况下,与基于链路质量的方案相比,最远距离方案表现出更低的E2E延迟,其差异最高可达29.5毫秒。相反,移动速度的巨大差异对最远距离方案产生了明显的不利影响,从而导致其与链路质量方案相比具有更高的E2E延迟,其差异最高可达127.43毫秒。在消息可达性方面,在两种速度差异方案中,链路质量方案都明显优于其他距离方案。因此,链路质量方案显示出对因移动速度差异大而产生的不利影响的鲁棒性,而进一步的距离方案则难以做到。与基于链路质量的方案相比,最远距离方案表现出更低的E2E延迟,相差高达29.5毫秒。相反,移动速度上的较大差异对最远距离方案产生了明显的不利影响,从而导致其与链路质量方案相比具有更高的E2E延迟,差异高达127.43毫秒。在消息可达性方面,在两种速度差异方案中,链路质量方案都明显优于其他距离方案。因此,链路质量方案显示出对因移动速度差异大而产生的不利影响的鲁棒性,而进一步的距离方案则难以做到。与基于链路质量的方案相比,最远距离方案表现出更低的E2E延迟,相差高达29.5毫秒。相反,移动速度上的较大差异对最远距离方案产生了明显的不利影响,从而导致其与链路质量方案相比具有更高的E2E延迟,差异高达127.43毫秒。在消息可达性方面,在两种速度差异方案中,链路质量方案都明显优于其他距离方案。因此,链路质量方案显示出对因移动速度差异大而产生的不利影响的鲁棒性,而进一步的距离方案则难以做到。移动速度的巨大差异对最远距离方案产生了明显的不利影响,从而导致其与链路质量方案相比具有更高的E2E延迟,相差最高为127.43毫秒。在消息可达性方面,在两种速度差异方案中,链路质量方案都明显优于其他距离方案。因此,链路质量方案显示出对因移动速度差异大而产生的不利影响的鲁棒性,而进一步的距离方案则难以做到。移动速度的巨大差异对最远距离方案产生了明显的不利影响,从而导致其与链路质量方案相比具有更高的E2E延迟,相差最高为127.43毫秒。在消息可达性方面,在两种速度差异方案中,链路质量方案都明显优于其他距离方案。因此,链路质量方案显示出对因移动速度差异大而产生的不利影响的鲁棒性,而进一步的距离方案则难以做到。

更新日期:2020-06-16
down
wechat
bug