Publikation
Introducing the Deterministic Body Subnetwork (DBS) - Ring-Topology Scheduling using Raw 802.11 Frame Injection
Jan Herbst; Robin Müller; Hans Dieter Schotten (Hrsg.)
EuCNC/6G Summit (EUCNC & 6G SUMMIT-2026), June 2-5, Malaga, Spain, IEEE Explore, 2026.
Zusammenfassung
Modern Wireless Body Area Network (WBAN) applications require communication mechanisms that go beyond best-effort data delivery and instead provide bounded latency, timing stability, and resilience against transient failures. These properties are particularly critical in medical and health-related scenarios, where multiple on-body sensors have to operate in synchronized and cyclic data exchange patterns. Building on our previous ring-topology implementations based on ESP-NOW and BLE, this work develops a raw IEEE 802.11 realization and extends it into the Deterministic Body Subnetwork (DBS), a WBAN framework architecture with explicit scheduling and error management. The framework is implemented on custom- designed ESP32-S3-based PCB platforms and systematically evaluated for up to five nodes, multiple payload sizes, and PHY rates from 1 Mbps to 54 Mbps. Results indicate that the proposed system significantly improves robustness and predictability while retaining the latency benefits of ring-oriented scheduling, with 24 Mbps emerging as the most suitable operating point under the evaluated on-body conditions.