Video Streaming in Cooperative Vehicular Networks

TL;DR

This paper introduces a cooperative vehicular network scheme that enhances video streaming quality by leveraging vehicle mobility and infrastructure cooperation, employing a novel back compensation strategy and throughput analysis.

Contribution

It proposes a new cooperative communication scheme with a back compensation strategy and provides analytical throughput models for vehicular video streaming.

Findings

Significant improvement in video quality metrics

Analytical throughput expressions validated by simulations

Enhanced video performance in vehicular networks

Abstract

Video services in vehicular networks play a significant role in our daily traveling. In this paper, we propose a cooperative communication scheme to facilitate video data transmission, utilizing the mobility of vehicles and the cooperation among infrastructure and vehicles. To improve the video quality of experience (QoE), i.e., reduce the interruption ratio, quality variation and improve the playback quality, we design a Back Compensation (BC) video transmission strategy with the knowledge of vehicle status information. In addition, we analyze the throughput with one-hop and target-cluster-based cooperation schemes and obtain their closed-form expressions, respectively, which is useful for video encoding design in the central server. Simulation results demonstrate that the proposed approach can improve the video performance significantly and verify the accuracy of our analytical results.