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Secure aggregation is a common technique in federated learning (FL) for protecting data privacy from both curious internal entities (clients or server) and external adversaries (eavesdroppers). However, in dynamic and resource-constrained…

Cryptography and Security · Computer Science 2025-08-20 Mohamed Elmahallawy , Tie Luo

Low-Earth-orbit (LEO) satellite constellations are increasingly performing on-board computing. However, the continuous emergence of new classes under strict memory and communication constraints poses major challenges for collaborative…

Networking and Internet Architecture · Computer Science 2026-04-06 Heng Zhang , Xiaohong Deng , Sijing Duan , Wu Ouyang , KM Mahfujul , Yiqin Deng , Zhigang Chen

Large-scale low-Earth-orbit (LEO) satellite systems are increasingly valued for their ability to enable rapid and wide-area data exchange, thereby facilitating the collaborative training of artificial intelligence (AI) models across…

Machine Learning · Computer Science 2025-09-17 Binquan Guo , Junteng Cao , Marie Siew , Binbin Chen , Tony Q. S. Quek , Zhu Han

The use of Low Earth Orbit (LEO) satellites in the next generation (Next-G) communication systems has been gaining traction over the last few years due to their potential for providing global connectivity with low latency. Since they are…

Signal Processing · Electrical Eng. & Systems 2025-06-03 Sambrama , Venkata Srirama Rohit Kantheti , Liang C Chu , Erik Blasch , Shih-Chun Lin

The space-air-ground integrated network (SAGIN) has become a crucial research direction in future wireless communications due to its ubiquitous coverage, rapid and flexible deployment, and multi-layer cooperation capabilities. However,…

Information Theory · Computer Science 2024-08-06 Chong Huang , Gaojie Chen , Pei Xiao , Jonathon A. Chambers , Wei Huang

A mega-constellation of low-earth orbit (LEO) satellites has the potential to enable long-range communication with low latency. Integrating this with burgeoning unmanned aerial vehicle (UAV) assisted non-terrestrial networks will be a…

Networking and Internet Architecture · Computer Science 2020-05-27 Ju-Hyung Lee , Jihong Park , Mehdi Bennis , Young-Chai Ko

Semantic communication can significantly improve bandwidth utilization in wireless systems by exploiting the meaning behind raw data. However, the advancements achieved through semantic communication are closely dependent on the development…

Information Theory · Computer Science 2026-02-25 Loc X. Nguyen , Ji Su Yoon , Huy Q. Le , Yu Qiao , Avi Deb Raha , Eui-Nam Huh , Walid Saad , Dusit Niyato , Zhu Han , Choong Seon Hong

Federated learning (FL) is a new artificial intelligence concept that enables Internet-of-Things (IoT) devices to learn a collaborative model without sending the raw data to centralized nodes for processing. Despite numerous advantages, low…

Machine Learning · Computer Science 2022-06-22 Minh-Duong Nguyen , Sang-Min Lee , Quoc-Viet Pham , Dinh Thai Hoang , Diep N. Nguyen , Won-Joo Hwang

Recent advancements in space technology have equipped low Earth Orbit (LEO) satellites with the capability to perform complex functions and run AI applications. Federated Learning (FL) on LEO satellites enables collaborative training of a…

Signal Processing · Electrical Eng. & Systems 2023-12-07 Lingling Wu , Jingjing Zhang

Federated learning (FL) has emerged as a widely adopted paradigm for enabling edge learning with distributed data while ensuring data privacy. However, the traditional FL with deep neural networks trained via backpropagation can hardly meet…

Machine Learning · Computer Science 2025-11-05 Jierui Zhang , Jianhao Huang , Kaibin Huang

The development of the sixth generation (6G) of wireless networks is bound to streamline the transition of computation and learning towards the edge of the network. Hierarchical federated learning (HFL) becomes, therefore, a key paradigm to…

Information Theory · Computer Science 2024-07-11 Ruslan Zhagypar , Nour Kouzayha , Hesham ElSawy , Hayssam Dahrouj , Tareq Y. Al-Naffouri

Low Earth orbit (LEO) satellite constellations play a pivotal role in sixth-generation (6G) wireless networks by providing global coverage, massive connections, and huge capacity. In this paper, we present a novel LEO satellite…

Information Theory · Computer Science 2025-09-05 Wenfei Yao , Xiaoming Chen , Qi Wang , Xingyu Peng

Low Earth orbit (LEO) satellites have been envisioned as a significant component of the sixth generation (6G) network architecture for achieving ubiquitous coverage and seamless access. However, the implementation of LEO satellites is…

Information Theory · Computer Science 2024-06-10 Chenyu Wu , Shuai Han , Qian Chen , Yu Wang , Weixiao Meng , Abderrahim Benslimane

The provision of communication services via portable and mobile devices, such as aerial base stations, is a crucial concept to be realized in 5G/6G networks. Conventionally, IoT/edge devices need to transmit the data directly to the base…

Machine Learning · Computer Science 2022-01-21 Sunder Ali Khowaja , Kapal Dev , Parus Khuwaja , Paolo Bellavista

Federated learning (FL) is recognized as a key enabling technology to support distributed artificial intelligence (AI) services in future 6G. By supporting decentralized data training and collaborative model training among devices, FL…

Signal Processing · Electrical Eng. & Systems 2021-11-02 Shaoming Huang , Pengfei Zhang , Yijie Mao , Lixiang Lian , Yuanming Shi

Semantic communication has emerged as a pillar for the next generation of communication systems due to its capabilities in alleviating data redundancy. Most semantic communication systems are built upon advanced deep learning models whose…

Machine Learning · Computer Science 2025-02-07 Loc X. Nguyen , Huy Q. Le , Ye Lin Tun , Pyae Sone Aung , Yan Kyaw Tun , Zhu Han , Choong Seon Hong

Federated learning (FL) was designed to enable mobile phones to collaboratively learn a global model without uploading their private data to a cloud server. However, exiting FL protocols has a critical communication bottleneck in a…

Machine Learning · Computer Science 2020-10-24 Jinliang Yuan , Mengwei Xu , Xiao Ma , Ao Zhou , Xuanzhe Liu , Shangguang Wang

A Low Earth orbit (LEO) satellite constellation consists of a large number of small satellites traveling in space with high mobility and collecting vast amounts of mobility data such as cloud movement for weather forecast, large herds of…

Machine Learning · Computer Science 2023-05-23 Mohamed Elmahallawy , Tie Luo

Sixth-generation (6G) networks anticipate intelligently supporting a wide range of smart services and innovative applications. Such a context urges a heavy usage of Machine Learning (ML) techniques, particularly Deep Learning (DL), to…

Networking and Internet Architecture · Computer Science 2023-09-19 Houda Hafi , Bouziane Brik , Pantelis A. Frangoudis , Adlen Ksentini

Devices located in remote regions often lack coverage from well-developed terrestrial communication infrastructure. This not only prevents them from experiencing high quality communication services but also hinders the delivery of machine…

Distributed, Parallel, and Cluster Computing · Computer Science 2024-08-20 Dong-Jun Han , Wenzhi Fang , Seyyedali Hosseinalipour , Mung Chiang , Christopher G. Brinton