QoS-Aware Hierarchical Web Caching Scheme for Online Video Streaming Applications in Internet-Based Vehicular Ad Hoc Networks

2015 ◽  
Vol 62 (12) ◽  
pp. 7892-7900 ◽  
Author(s):  
Neeraj Kumar ◽  
Sherali Zeadally ◽  
Joel J. P. C. Rodrigues
Author(s):  
Martin Fleury ◽  
Nadia N Qadri ◽  
Muhammad Altaf ◽  
Mohammed Ghanbari

Mobile Ad Hoc Networks (MANETs) are a further step towards wireless networks with no or limited infrastructure and Vehicular Ad Hoc Networks (VANETs) extend this concept, introducing diverse mobility patterns but removing the need for battery power conservation. Video streaming and multimedia applications in general have become an engine of growth in wireless networking and this Chapter shows how video streaming can take place in this challenging environment. Error resilience and path diversity are presented as the key to robust streaming. The Chapter shows that simplified forms of multiple description coding are a practical route to take, with redundant frames in the temporal domain or Flexible Macroblock Ordering in the spatial domain offering preferred solutions. As a form of management of streaming, distributed sourcing via peer-to-peer streaming is experimented within VANET simulations. Error resilience methods, peer-to-peer streaming, and multi-path routing are reviewed. The Chapter considers the exploitation of path diversity over a MANET and a VANET. Path diversity allows the merging of the peer-to-peer concept with ad hoc networks. Future research directions are reviewed.


2019 ◽  
Vol 14 (1) ◽  
pp. 21-38
Author(s):  
Omar A. Hammood ◽  
Mohd Nizam ◽  
Muamer Nafaa ◽  
Waleed A. Hammood

Video streaming in Vehicular Ad Hoc Networks (VANETs) is a fundamental requirement for a roadside emergency and smart video surveillance services. However, vehicles moving at a high speed usually create unstable wireless links that drop video frames qualities. In a high-density network, network collision between vehicles is another obstacle in improving the scalability of unicast routing protocols. In this paper, the RElay Suitability-based Routing Protocol (RESP) which makes a routing decision based on the link stability measurement was proposed for an uninterrupted video streaming. The RESP estimates the geographic advancement and link stability of a vehicle towards its destination only in the small region. To ensure the reliability while extending the scalability of routing, the relay suitability metric integrates the packet delay, collision dropping, link stability, and the Expected Transmission Count (ETX) in the weighted division algorithm, and selects a high-quality forwarding node for video streaming. The experimental results demonstrated that the proposed RESP outperformed the link Lifetime-aware Beacon-less Routing Protocol (LBRP) and other traditional geographical streaming protocols in providing a high packet delivery ratio and less packet delay with various network densities, and proved the scalability support of RESP for video streaming.


2019 ◽  
Vol 26 (4) ◽  
pp. 267-287

Vehicular Ad-hoc Networks (VANETs) are a new emerging technology which has attracted enormous interest over the last few years. It enables vehicles to communicate with each other and with roadside infrastructures for many applications. One of the promising applications is multimedia services for traffic safety or infotainment. The video service requires a good quality to satisfy the end-user known as the Quality of Experience (QoE). Several models have been suggested in the literature to measure or predict this metric. In this paper, we present an overview of interesting researches, which propose QoE models for video streaming over VANETs. The limits and deficiencies of these models are identified, which shed light on the challenges and real problems to overcome in the future.


Computers ◽  
2020 ◽  
Vol 9 (2) ◽  
pp. 45
Author(s):  
Abdelkader Benmir ◽  
Ahmed Korichi ◽  
Abdelhabib Bourouis ◽  
Mohammed Alreshoodi ◽  
Laith Al-Jobouri

Video streaming is one of the challenging issues in vehicular ad-hoc networks (VANETs) due to their highly dynamic topology and frequent connectivity disruptions. Recent developments in the routing protocol methods used in VANETs have contributed to improvements in the quality of experience (QoE) of the received video. One of these methods is the selection of the next-hop relay vehicle. In this paper, a QoE-aware geographic protocol for video streaming over VANETs is proposed. The selection process of the next relay vehicle is based on a correlated formula of QoE and quality of service (QoS) factors to enhance the users’ QoE. The simulation results show that the proposed GeoQoE-Vanet outperforms both GPSR and GPSR-2P protocols in providing the best end-user QoE of video streaming service.


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