2021/12/09 by Yuchang Sun, Sun, Yuchang, Jiawei Shao +5 · 1 citation
Computer Science · #Age of Information Optimization #IoT and Edge/Fog Computing #Privacy-Preserving Technologies in Data #cs.LG #cs.NI
paper · pdf · doi:10.48550/arxiv.2112.04737
arxiv created 2021/12/09 · arxiv updated 2021/12/10
Federated edge learning (FEEL) has drawn much attention as a privacy-preserving distributed learning framework for mobile edge networks. In this work, we investigate a novel semi-decentralized FEEL (SD-FEEL) architecture where multiple edge servers collaborate to incorporate more data from edge devices in training. Despite the low training latency enabled by fast edge aggregation, the device heterogeneity in computational resources deteriorates the efficiency. This paper proposes an asynchronous training algorithm for SD-FEEL to overcome this issue, where edge servers can independently set deadlines for the associated client nodes and trigger the model aggregation. To deal with different levels of staleness, we design a staleness-aware aggregation scheme and analyze its convergence performance. Simulation results demonstrate the effectiveness of our proposed algorithm in achieving faster convergence and better learning performance.