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A Spatial Model for Using the Age of Information in Cooperative Driving Applications

Published: 24 October 2022 Publication History

Abstract

The age of information (AoI) has been proposed as a metric for evaluating freshness of information; recently also within the context of intelligent transportation systems (ITS). The most frequently used definition of AoI, however, does only account for the generation time of the data but not for application-specific aspects. In ITS, for example, the distance of vehicles is not considered and nodes farther away may experience an increased AoI due to effects of the wireless communication channel. We propose a new way of interpreting the AoI in such a context, also considering the location of the transmitting vehicle as a metric of importance to the information. In particular, we introduce a weighting coefficient used in combination with the peak age of information (PAoI) metric to describe the AoI requirement, emphasizing on packets from more important neighbors. As an example, we characterize such importance using the orientation and the distance of the involved vehicles. We use the derived model to focus on timely updates of relevant vehicles for meeting a given AoI requirement, which can save resources on the wireless channel while keeping the AoI minimal.

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  • (2023)Scheduling "Last Minute" Updates for Timely Decision-MakingProceedings of the Int'l ACM Conference on Modeling Analysis and Simulation of Wireless and Mobile Systems10.1145/3616388.3617518(65-72)Online publication date: 30-Oct-2023
  • (2023)Focusing on information context for ITS using a spatial age of information modelComputer Communications10.1016/j.comcom.2023.07.002209:C(203-216)Online publication date: 1-Sep-2023

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        cover image ACM Conferences
        MSWiM '22: Proceedings of the 25th International ACM Conference on Modeling Analysis and Simulation of Wireless and Mobile Systems
        October 2022
        243 pages
        ISBN:9781450394826
        DOI:10.1145/3551659
        Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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        Published: 24 October 2022

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        Author Tags

        1. age of information
        2. cooperative driving
        3. intelligent transportation systems
        4. spatial model
        5. vehicular networking

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        • (2023)Scheduling "Last Minute" Updates for Timely Decision-MakingProceedings of the Int'l ACM Conference on Modeling Analysis and Simulation of Wireless and Mobile Systems10.1145/3616388.3617518(65-72)Online publication date: 30-Oct-2023
        • (2023)Focusing on information context for ITS using a spatial age of information modelComputer Communications10.1016/j.comcom.2023.07.002209:C(203-216)Online publication date: 1-Sep-2023

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