Jul 2026· International Mediterranean Conference on Communications and Networking· pp. 1-6· 0 citations· 14 references
Abstract
Reliable link maintenance is currently a critical bottleneck for unmanned aerial vehicle (UAV) swarm communications in complex electromagnetic environments where UAVs encounter both external malicious jamming and internal interference. Most recent studies have treated trajectory design and resource scheduling as decoupled problems or employed standard deep reinforcement learning methods to handle static spectral scenarios. However, these approaches lead to frequent link breakages and slow convergence when dealing with dynamic topologies and spatiotemporal interference. To tackle this challenge, we proposes a joint spatial-spectral adaptive coordination (JSSAC) framework and a deep recurrent attentionbased Q-network (DARQN) approach, utilizing a multi-head attention mechanism to intelligently aggregate heterogeneous neighbor features, thereby enhancing the swarm's adaptability to dynamic network topology. Moreover, considering that the spatial distribution of drones fundamentally determines the upper bound of the signal quality, we designed a communicationaware potential field mechanism that incorporates real-time signal-to-interference-plus-noise ratio feedback. Simulation results demonstrate that compared to DQN and DRQN algorithms, the proposed algorithm achieves transmission success rates of over 92%, representing improvements of 17% and 8% respectively, while also accelerating convergence speed.
Results show that topology‐aware cooperative learning can provide a scalable and practical solution for reliable UAV communication in future intelligent aerial and 6G‐enabled networks, particularly in dense deployments.
V. Nam, A. Chehri, Weiwei Jiang et al.· Expert systems· 0 citations
High-performance networking is essential for Unmanned Aerial Vehicle (UAV) swarms to accomplish complex, coordinated missions. A central challenge in UAV swarm networking is managing concurrent multi-hop transmissions, where traditional protocols often struggle due to routing path conflicts and co-channel interference. To address this, we propose a novel multi-agent reinforcement learning (MARL)-based cross-layer transmission framework that maximizes system throughput by jointly optimizing network-layer routing, link-layer resource allocation, and UAV trajectories. We decouple this complex joint optimization problem and solve it with a routing-prioritized iterative scheme. For the routing sub-problem, an MARL approach is designed for agents to collaboratively plan concurrent routing paths. The non-convex resource allocation and trajectory sub-problems are handled using successive convex approximation (SCA). Experimental results demonstrate that our proposed framework significantly outperforms existing benchmarks in system throughput, end-to-end delay, and packet delivery ratio.
Yang Shen, Bing Li, Rongqing Zhang· IEEE Transactions on Wireles...· 0 citations
Unmanned Aerial Vehicles (UAVs) are promising relay platforms due to their flexible deployment and high probability of line-of-sight (LoS) connectivity. This paper compares three deep reinforcement learning (DRL) algorithms-Proximal Policy Optimization (PPO), Soft Actor-Critic (SAC), and Recurrent PPO with LSTM memory-for joint UAV trajectory and energy optimization in UAV based relay systems. The problem formulated is a non-convex optimization problem that minimizes UAV propulsion energy while satisfying Quality of Service (QoS) and mobility constraints under realistic 3GPP channel conditions. Simulation results show that all methods achieve over 99% QoS satisfaction. SAC exhibits the fastest convergence, whereas the proposed Recurrent PPO achieves the lowest energy consumption (44.72 kJ), reducing energy usage by 5.1% compared with PPO. These results highlight the trade-off between convergence speed and energy efficiency in DRL-based UAV relay optimization.
Aniket Subbanwar, Ojas Joshi, Amit Agarwal· International Conference on...· 0 citations
Unmanned aerial vehicle (UAV)-assisted mobile edge computing (MEC) systems provide flexible computing services for resource-constrained devices, but malicious jamming attacks introduce dynamic channel conditions and resource competition, making joint trajectory and resource optimization challenging. This paper investigates this problem in multi-UAV MEC systems under jamming, aiming to minimize delay and energy consumption while ensuring anti-jamming robustness. The problem is formulated as a decentralized partially observable Markov decision process (Dec-POMDP). However, traditional multi-agent reinforcement learning (MARL) approaches struggle with high exploration costs and low sampling efficiency in high-dimensional hybrid action spaces. To overcome these limitations, we propose an LLM-guided MARL framework instantiated with the multi-agent deep deterministic policy gradient (MADDPG), which leverages LLM-generated semantic trajectory prompts to dynamically constrain exploration within the continuous action space, effectively compressing the policy search space and accelerating convergence. Simulation results demonstrate that the proposed method achieves $3.4\times $ to $5\times $ faster convergence over hierarchical MADDPG, MADDPG, and independent soft actor-critic (ISAC) baselines, significantly reducing training costs while maintaining superior performance and anti-jamming robustness.
Yeguang Qin, Jie Tang, Fengxiao Tang et al.· IEEE Transactions on Communi...· 0 citations
This study proposes a novel Deep Reinforcement Learning (DRL)-based resource allocation architecture that dynamically mitigates physical layer impairments in Long Range (LoRa) communication networks established with Unmanned Aerial Vehicles (UAVs) operating at tactical speeds. Traditional Adaptive Data Rate (ADR) algorithms used in LoRaWAN networks misinterpret the Doppler shift under high mobility as path loss, leading to an unwarranted increase in the spreading factor and subsequent communication link failures. In this work, a cross-layer Deep Q-Network (DQN) agent is designed to incorporate UAV velocity into the state space, autonomously selecting the optimal spreading factor and transmission power by predicting frequency shifts at the physical layer. Simulations conducted in a realistic Rayleigh fading channel model demonstrate that the proposed method increases the Packet Delivery Ratio (PDR) to over 85% at high speeds, significantly outperforming conventional algorithms.
Sıtkı Öztürk, İlyas Soyer· Signal Processing and Commun...· 0 citations
The rapid proliferation of Uncrewed Aerial Vehicles (UAVs) introduces significant challenges to low-altitude airspace security, particularly from unauthorized intrusions. To address these vulnerabilities, Integrated Sensing and Communication (ISAC) has emerged as a key enabler for anti-UAV systems. However, existing studies focusing on cellular networks with fixed base stations are ill-suited for the continuous movement of target UAVs, thus failing to meet the dual demands of flexible sensing and reliable positioning. To address this, we propose an ISAC-enabled anti-UAV scheme solely based on cooperative UAVs. Specifically, we first derive the optimal transmit power under the constraint of space-air transmission outage probability tolerance. Subsequently, we deduce the sensing Fisher information matrix and Cramér-Rao Bound (CRB) by incorporating the position uncertainty of the target UAV. Then, we formulate a long-term CRB minimization problem to enhance cooperative sensing performance. To tackle this NP-hard problem, we design a robust optimization algorithm that jointly optimizes transmit-receive beamforming, association scheduling, and UAV trajectory, by transforming the structurally complex CRB matrix into a set of semi-definite constraints, and resolving the inherent position uncertainty. Numerical results demonstrate that our proposed algorithm outperforms representative algorithms in terms of sensing accuracy and robustness.
Xiaojie Wang, Lingfei Li, Zhaolong Ning et al.· IEEE Transactions on Wireles...· 1 citation