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research-article

Reducing Age of Extra Data by Free Riding on Coded Transmission in Multiaccess Networks

Authors:

Xiao MaAuthors Info & Claims

2022 IEEE Wireless Communications and Networking Conference (WCNC)

Pages 1296 - 1300

https://doi.org/10.1109/WCNC51071.2022.9771945

Published: 10 April 2022 Publication History

Abstract

This paper focuses on the real-time status update in a multiaccess vehicular network, in which multiple vehicles transmit not only the payload data (e.g., monitoring data) but also the extra data (e.g., driving intention) to a road side unit for scheduling vehicles to improve traffic efficiency and safety. A free-ride code is implemented, where the extra data is encoded by a random but fixed generator matrix and is delivered by superposition on the low-density parity-check (LDPC) coded payload data, consuming neither extra bandwidth nor extra transmit power. Considering the time slotted ALOHA random access protocol, we derive the closed-form expression for average age of information (AoI), and evaluate the AoI for both payload data and extra data. Numerical simulations demonstrate that free-ride codes can not only transmit extra data without extra transmit power, but also reduce the average AoI of extra data without affecting the average AoI of payload data.

References

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Digital Library

Cited By

Xie MAn BJia XZhou MLu J(2024)Simultaneous update of sensing and control data using free-ride codes in vehicular networksComputer Networks: The International Journal of Computer and Telecommunications Networking10.1016/j.comnet.2024.110667252:COnline publication date: 1-Oct-2024
https://dl.acm.org/doi/10.1016/j.comnet.2024.110667

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2022 IEEE Wireless Communications and Networking Conference (WCNC)

Apr 2022

2737 pages

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IEEE Press

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Published: 10 April 2022

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Cited By

Xie MAn BJia XZhou MLu J(2024)Simultaneous update of sensing and control data using free-ride codes in vehicular networksComputer Networks: The International Journal of Computer and Telecommunications Networking10.1016/j.comnet.2024.110667252:COnline publication date: 1-Oct-2024
https://dl.acm.org/doi/10.1016/j.comnet.2024.110667

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