6G • RAN
dApp (O-RAN)
Real-Time Distributed Application (<10 ms Control Loop)
Ultra-low latency microservices deployed directly inside the Open Distributed Unit (O-DU) to execute sub-millisecond physical layer radio control.
Technical Explanation
While xApps and rApps operate on loops of 10 ms to seconds, many critical 6G physical layer processes (such as beam tracking, instant channel state feedback, and microsecond packet scheduling) require control within sub-10ms intervals. O-RAN dApps execute directly inside the O-DU hardware accelerator environment, executing neural-network channel estimation, fast beam-hopping, and instantaneous interference nulling at line rate.
Key Functions
- Sub-10 millisecond ultra-fast physical and MAC layer control loops
- Direct execution within the Open Distributed Unit (O-DU) hardware accelerator
- Ultra-fast beam tracking for moving users in high-frequency Sub-THz bands
- Instantaneous HARQ adaptation and grant-free transmission coordination
- Sub-millisecond radar echo signal filtering in ISAC base stations
Specifications
O-RAN Alliance O-DU Specification Evolution, 3GPP Rel-20 Studies
Interfaces
O-DU Internal BusE2-Lite
Related 6G Concepts
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