Adaptive AI Agent Migration via Generative Diffusion-based Reinforcement Learning in Edge Intelligence Systems
Deploying Large Language Model (LLM)-based AI agents at the network edge enables real-time task handling in 6G networks. However, resource heterogeneity and user mobility necessitate agent migration to maintain Quality of Service (QoS). Unlike stateless containers, AI agents encapsulate invocation histories, planning contexts, and memory stores, making their migration considerably more complex. To address this issue, we propose AMD, an adaptive AI Agent Migration framework that integrates conditional Diffusion models with reinforcement learning to jointly optimize latency and resource utilization under dynamic edge environments. Specifically, we introduce a diffusion model as a generative prior to produce high-quality global deployment plans, effectively avoiding the local-optima problem common in conventional reinforcement learning. A reinforcement learning-based module then performs online policy refinement to accommodate real-time environmental variations. We implement AMD on a distributed system built upon AgentScope and validate it across geographically distributed edge servers. Experimental results demonstrate that AMD reduces the average task latency by 3.9%–27.6% and improves resource utilization by up to 53.3% compared to baseline strategies.