遅延耐性を持つクラウド・エッジ協調型視覚言語行動モデル：創発的表現特化による実現
Latency-Tolerant Cloud-Edge Collaborative Vision-Language-Action Models via Emergent Representational Specialization
クラウド上の大規模VLAモデルとエッジの軽量ヘッドを組み合わせ、通信遅延があってもロボット制御を維持する手法を提案。遅延フレームと現在フレームを同じ行動目標で学習させ、クラウド表現にタスク情報を、エッジに状態補正を担わせる。
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著者: Daojie Peng, Fulong Ma, Bingtao Wang, Sheng Wang, Jun Ma
分類: cs.RO, cs.AI, cs.SY, eess.SY
原文アブストラクト
Deploying billion-parameter Vision-Language-Action (VLA) policies on mobile robots creates a systems conflict: semantic reasoning benefits from cloud GPUs, whereas closed-loop control must respond locally despite network delay and jitter. Existing hierarchical and asynchronous policies improve throughput, but their slow-path representations can still arrive stale or require explicit scheduling and delay cues. We introduce CloudEdgeVLA, a cloud-edge policy that treats temporal misalignment as a representation-learning problem. A cloud VLA encodes delayed observations into slowly varying task features, while a lightweight edge head combines the latest available cloud feature with current local vision. During training, current and randomly delayed frames are paired with the same current action target in fresh and stale paths. This objective encourages the cloud representation to preserve task-level information while the edge path supplies state-sensitive corrections. Across four LIBERO suites, CloudEdgeVLA retains 63.8--78.0% success with a 40-step uniform-delay window, whereas VLASH reaches at most 6.4% and the evaluated single-path baselines at most 3.0%. By removing blocking synchronization from the control loop, the design offers a practical route to scalable VLA deployment in which cloud models can grow while edge computation remains lightweight and responsive.
