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    政大機構典藏 > 資訊學院 > 資訊科學系 > 期刊論文 >  Item 140.119/154752


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    題名: Age-of-Information-Based Transmission Protocol in Vehicular Network
    作者: 張宏慶
    Jang, Hung-Chin;Huang, Chung-Yen
    貢獻者: 資訊系
    關鍵詞: age of information;transmission protocol;vehicular network
    日期: 2024-01
    上傳時間: 2024-12-12 09:27:55 (UTC+8)
    摘要: With the development of the Internet of Things (IoT) and communication networks, the concept of a smart city emerged spontaneously. In the traffic control of a smart city, the vehicular network plays an important role. If the driving information of vehicles can be collected from the vehicular network and then aggregated into a smart city system, traffic control facilities can be adjusted in real time to improve traffic or increase traffic safety. This study is based on WAVE/DSRC under the IEEE 802.11p and IEEE 1609 standards. When the vehicle is moving, the On-Board Unit (OBU) on the vehicle and the Roadside Unit (RSU) transmit data through the 5.9 GHz (5.85–5.925 GHZ) frequency band to establish vehicle-to-vehicle communication (V2V) and vehicle-to-infrastructure communication (V2I). The immediacy of the transmission of beacon messages is also discussed over a vehicular network. A beacon message is essential for communication in a vehicular network, including various safety messages, such as driving directions, driving speed, and location. We introduce the Age-of-Information (AoI) indicator to reflect the immediacy of information. AoI is used for the elapsed time after the sender samples the message until the receiver receives the message. We propose a centralized AoI-based protocol and a decentralized AoI-based protocol. By using Random-Walk and SUMO, we simulate driving dynamics and various RSU setting scenarios. Finally, we verify the performance of the proposed AoI-based protocol through experimental simulations.
    關聯: Engineering Proceedings (MDPI), Vol.55, No.1, 87
    資料類型: article
    DOI 連結: https://doi.org/10.3390/engproc2023055087
    DOI: 10.3390/engproc2023055087
    顯示於類別:[資訊科學系] 期刊論文

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