LR-V2X: Loss-Resilient Collaborative Perception under Low-Bandwidth Communication
cs.CV
Submitted: 2026-10-08
Updated: 2026-10-08
Code: https://github.com/sidiangongyuan/LR-V2X
License: http://creativecommons.org/licenses/by/4.0/
The gist: Given the inherent unpredictability of packet loss in vehicular wireless communications, V2X collaborative perception can yield practical benefits only if agents can achieve reliable collaboration
Terminology
Abstract
Given the inherent unpredictability of packet loss in vehicular wireless communications, V2X collaborative perception can yield practical benefits only if agents can achieve reliable collaboration under lossy and low-bandwidth communication conditions. Existing dense BEV feature fusion methods depend on redundant BEV feature exchange, which is infeasible in low-bandwidth scenarios, while compact-communication methods aggressively compress messages but can hardly recover the missing feature content after packet loss. In this paper, we present LR-V2X, a loss-resilient, latent-space reconstruction framework that converts corrupted received latents (even under severe 90% packet loss) into a spatial prior and then reconstructs the missing BEV information from this informative prior and using ego context as condition. Notably, the model can be trained under complete communication conditions and can be directly applied to lossy conditions at test time, eliminating the need for training under numerous lossy conditions. Experiments on DAIR-V2X and V2XREAL show that LR-V2X delivers the strongest robustness under severe packet loss and preserves reliable collaboration as communication quality degrades. And it reduces communication overhead by 64 times compared to dense BEV feature fusion baselines. Code will be released at https://github.com/sidiangongyuan/LR-V2X.
Sources
- ILVR: Conditioning Method for Denoising Diffusion Probabilistic Models
- Domain Adaptation for Visual Applications: A Comprehensive Survey
- STAMP: Scalable Task And Model-agnostic Collaborative Perception
- CoDiff: Conditional Diffusion Model for Collaborative 3D Object Detection
- An Extensible Framework for Open Heterogeneous Collaborative Perception
- Denoising Diffusion Implicit Models
- CoCMT: Communication-Efficient Cross-Modal Transformer for Collaborative Perception
- BM2CP: Efficient Collaborative Perception with LiDAR-Camera Modalities
- QuantV2X: A Fully Quantized Multi-Agent System for Cooperative Perception
- Pragmatic Heterogeneous Collaborative Perception via Generative Communication Mechanism
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