Time Determinism Analysis under Topology Variations in IEEE 802.1Qbv-Based In-Vehicle Networks (IEEE 802.1Qbv 기반 차량 내부 네트워크에서 토폴로지 변화에 따른 시간 결정성 분석)

Seo-Yeon Han (한서연); Sol-Bee Lee (이솔비); Jung-Hyok Kwon (권정혁); Eui-Jik Kim (김의직)

doi:10.20465/KIOTS.2025.11.6.137

Time Determinism Analysis under Topology Variations in IEEE 802.1Qbv-Based In-Vehicle Networks

Journal of Internet of Things and Convergence
Abbr : JKIOTS
2025, 11(6), pp.147~152
DOI : 10.20465/KIOTS.2025.11.6.137
Publisher : The Korea Internet of Things Society
Research Area : Engineering > Computer Science > Internet Information Processing
Received : October 17, 2025
Accepted : November 24, 2025
Published : December 31, 2025

Seo-Yeon Han ¹, Sol-Bee Lee ², Jung-Hyok Kwon ², Eui-Jik Kim ²

¹한림대학교 소프트웨어학부
²한림대학교

Accredited

ABSTRACT

Recently, Time-Sensitive Networking (TSN) has gained increasing attention as a promising solution to handle the growing sensor data and complex control demands in In-Vehicle Networks (IVN). In particular, the Time-Aware Shaper (TAS) defined in IEEE 802.1Qbv is regarded as a key mechanism for ensuring time determinism. However, TSN performance is highly affected by network topology, making topology-aware analysis essential for IVN design. This paper investigates the impact of topology variation on time determinism in an IEEE 802.1Qbv-based IVN environment. To this end, a baseline Dumbbell topology reflecting a Zonal Architecture was designed, and additional Spoke links were incrementally attached to the central switch. OMNeT++ and NESTing simulations were conducted to evaluate performance metrics. The results indicate that increasing the number of Spoke links mitigates central bottlenecks by distributing traffic, leading to higher throughput and reduced delay and packet delay variation. These findings confirm that topology configuration directly affects TAS-based time determinism and provide useful reference data for future IVN design.

KEYWORDS

Time Determinism, TSN, IVN, Topology Design, IEEE 802.1Qbv

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This paper was written with support from the National Research Foundation of Korea.

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Journal of Internet of Things and Convergence 2025 KCI Impact Factor : 0.75

Time Determinism Analysis under Topology Variations in IEEE 802.1Qbv-Based In-Vehicle Networks

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* References for papers published after 2025 are currently being built.

Journal of Internet of Things and Convergence 2025 KCI Impact Factor : 0.75

Time Determinism Analysis under Topology Variations in IEEE 802.1Qbv-Based In-Vehicle Networks

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