Age of Information Under DCC Rate Constraints for V2I Broadcast Along Urban Corridors

Yousef AlSaqabi

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arXiv · 2606.29611

Age of Information Under DCC Rate Constraints for V2I Broadcast Along Urban Corridors

Yousef AlSaqabi

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Abstract

ETSI Decentralized Congestion Control (DCC) limits roadside unit (RSU) broadcast rates based on channel load, yet its impact on age of information (AoI) for vehicle-to-infrastructure updates remains uncharacterized under real traffic. We derive the AoI of DCC-constrained V2I broadcast, revealing a hyperbolic density dependence that induces diurnal AoI variation exceeding 4 times on a four-RSU corridor, with the DCC target CBR parameter as the dominant control. We propose a cooperative policy exploiting upstream spatial traffic correlation to improve channel load estimation, with a safeguard ensuring non-negative gains. Evaluated on a 5-day, 762,050-vehicle trace from Kuwait City, the policy reduces corridor AoI by 5% at moderate and up to 66% at conservative DCC settings.

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Yousef AlSaqabi. 2026-06-28. Age of Information Under DCC Rate Constraints for V2I Broadcast Along Urban Corridors. https://arxiv.org/abs/2606.29611

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