With the explosion of the video content industry, the demand for large file downloads is increasing rapidly. Different from text-based contents, video contents require lossless transmission with an ordered constraint to ensure the best utility. Meanwhile, providing low latency and stable downloads under high mobility scenarios, such as vehicle users in a highway, is one of the major challenges in wireless communications. In this work, a caching strategy is adopted to address the problem of downloading large order-sensitive contents, supporting user mobility. Particularly, a multi-layer caching framework is proposed based on a simple yet efficient adaptive chunk-based caching (ACBC) algorithm. The multi-layer caching framework increases the flexibility in deploying file chunks and shortens the distance between user and content with affordable memory cost, while ACBC algorithm introduces a feedback mechanism to provide stable and high-efficiency chunk deployment scheme. The cooperation of the two ensures reliable downloads for high-mobility users with minimal access delay and caching space requirements. Simulation results indicate that our solution achieves a very small content access delay with a low cache space occupation compared with other mobility-based caching algorithms (such as MAP and RICH). 1


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    A Popularity- and Mobility-Aware Multi-layer Caching with Feedback Mechanism for Highway Vehicular Networks


    Contributors:
    Li, Ke (author) / Lyu, Zhaoyan (author) / Liu, Heng (author) / Fan, Pingzhi (author)


    Publication date :

    2020-11-01


    Size :

    2041811 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Popularity Incentive Caching for Vehicular Named Data Networking

    Wang, Cong / Chen, Chen / Pei, Qingqi et al. | IEEE | 2022



    Learning-Based Caching with Unknown Popularity in Wireless Video Networks

    Tan, Yuanyuan / Yuan, Yiling / Yang, Tao et al. | IEEE | 2017


    Highway Mobility and Vehicular Ad-Hoc Networks in NS-3

    Arbabi, Hadi / Weigle, Michele C. | ArXiv | 2010

    Free access

    VeSoNet: Traffic-Aware Content Caching for Vehicular Social Networks Using Deep Reinforcement Learning

    Aung, Nyothiri / Dhelim, Sahraoui / Chen, Liming et al. | IEEE | 2023

    Free access