The traditional large-scale and low-power Internet of Things systems cannot meet the requirement of freshness of information. In this paper, a frame-slotted Aloha (FSA) based synchronization strategy is proposed to update information for multi-node access, which makes the information at the receiver side as fresh as possible. Firstly, a multi-point access model of the system from the perspective of FSA is studied, and the corresponding data flow and framework analysis are presented. Secondly, the age of information (AoI) analysis of FSA is conducted, and the expression of the average AoI and the optimal frame size under frame synchronization are derived. Finally, numerical simulation results show that the proposed strategy achieves the lower AoI in FSA based multi-node wireless sensor networks.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Age of Information for Slotted ALOHA with Synchronization Frames at Multiple Access Points


    Contributors:
    Song, Changhao (author) / Xie, Mangang (author) / An, Baozhen (author) / Wang, Qianqian (author) / Wang, Yue (author)


    Publication date :

    2024-10-07


    Size :

    452645 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Sloppy-slotted ALOHA

    Crozier, Stewart N. | NTRS | 1990


    Peak Age of Information Optimization of Slotted Aloha

    Wu, Dewei / Zhan, Wen / Sun, Xinghua et al. | IEEE | 2022



    A slotted ALOHA packet radio system with multiple antennas and receivers

    Lau,C. / Leung,C. / Univ. of British Columbia,Vancouver,CA | Automotive engineering | 1988