Arman Maghsoudnia
EPFL IC IINFCOM SENS
BC 114 (Bâtiment BC)
Station 14
1015 Lausanne
+41 21 693 58 66
Office: INR 118
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Site web: https://sens.epfl.ch
Formation
2018 – 2023 Sharif University of Technology
Prix et distinctions
ACM MobiCom 2024
2024
Towards URLLC with Open-Source 5G Software
Ultra-Reliable Low-Latency Communication is a key feature of 5G, yet achieving its strict one-way latency target remains challenging in real-world deployments. While previous work proposes latency reduction techniques, most are theoretical or simulation-based and overlook practical bottlenecks in actual systems. In this paper, we analyze and optimize latency with open-source 5G RAN software. We characterize latency sources arising from 5G specifications and implementation-level factors, along with their complex interplays. Guided by this analysis, we introduce improvements reducing one way latency by 39.28 % in the downlink and 55.38 % in the uplink. Our results show the importance of system-level experimentation and provide a blueprint for advancing toward URLLC targets in both 5G and future cellular networks.
2025. 4th Workshop on Open Research Infrastructures and Toolkits for 6G (OpenRIT6G 2025), Coimbra, Portugal, 2025-09-08. p. 7 - 14. DOI : 10.1145/3750718.3750743.SliceGuard: Secure and Dynamic 5G RAN Slicing with WebAssembly
5G enables diverse services through network slicing, allowing multiple virtual networks to share physical infrastructure. However, efficiently managing resources across slices is challenging. This demo presents SliceGuard, a two-level scheduling system that leverages WebAssembly (Wasm) to allow slice owners to run customized schedulers in a secure, platform-independent environment, while the network operator manages inter-slice resource allocation. We demonstrate dynamic slicing for cloud gaming over 5G and show how Wasm enables real-time scheduler updates and fault isolation. This approach enhances flexibility, security, and customization for private 5G networks.
2024. 30th Annual International Conference on Mobile Computing and Networking, Washington D.C., 2024-11-18 - 2024-11-22. p. 1793 - 1795. DOI : 10.1145/3636534.3698862.Ultra-Reliable Low-Latency in 5G: A Close Reality or a Distant Goal?
Ultra-Reliable Low-Latency Communication (URLLC) was introduced in 5G to meet the demanding requirements of latencies as low as 0.5 ms and reliability of 99.999 % for specific applications. Despite over a decade of discussions on URLLC, achieving these standards in real-world implementations remains challenging. We argue that it is unclear if and how URLLC can be attained and a holistic system-level perspective that addresses all the system's inherent bottlenecks is needed. Inspired by a real-world 5G testbed, we present this comprehensive vision and show how to achieve latency requirements by outlining the necessary design choices across all system layers, including the processing and radio units. CCS CONCEPTS • Networks → Mobile networks; Network performance analysis; Network design principles.
2024. 23rd ACM Workshop on Hot Topics in Networks, Irvine CA USA, 2024-11-18 - 2024-11-19. p. 111 - 120. DOI : 10.1145/3696348.3696862.