Caching Placement Minimised Service Time for Video Streaming over Roadside Units in VANETs

  • Nguyen-Son Vo Institute of  Fundamental and Applied Sciences, Duy Tan University, Ho Chi Minh City, Vietnam
  • Quynh-Anh Nguyen Ho Chi Minh City University of Transport, Ho Chi Minh City, Vietnam
  • Thanh-Minh Phan Vietnam Aviation Academy, Ho Chi Minh City, Vietnam
  • Thanh-Hieu Nguyen Ho Chi Minh City University of Transport, Ho Chi Minh City, Vietnam
  • Thanh-Dung Tran Absolute Software Company, Ho Chi Minh City, Vietnam
Từ khóa: : Caching networks, Caching networks, quality of experience, vehicular, video streaming applications and services

Tóm tắt

Video streaming services (VSSs) are considerably requested by on-the-road users (RUs) in vehicular ad-hoc networks (VANETs). Gaining high quality of experience (QoE) of VSSs is more challenging due to dynamic characteristics of the RUs and complicated parameters of the videos. In this paper, we exploit the available storage and processing capacity of roadside units (RSUs) to improve the QoE of VSSs in VANETs. To do so, a caching placement (CAP) optimisation problem is formulated for optimal caching radius (measured in hops) of each video. The optimal solution is found in accordance with the patterns of not only the arrival and service at the RSUs but also the access rate of the videos, so as to minimise the service time for video streaming over RSUs in VANETs. Simulation results are presented to demonstrate the advantages of the CAP solution compared to other conventional schemes.

điểm /   đánh giá
Phát hành ngày
2022-11-15
In ra
Tập. 1 Số. 2 (2022)
Chuyên mục
Engineering