一种隐藏终端影响下蜂窝车联网频谱资源分配方法

By employing multi-agent deep reinforcement learning and binary tree state space decomposition algorithms, the problem of data packet collisions caused by hidden terminal interference in cellular vehicle-to-everything (V2V) networks was solved, achieving highly reliable spectrum resource allocation and improving the reliability and scalability of V2V communication.

CN121547867BActive Publication Date: 2026-07-17SHANDONG UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANDONG UNIV OF SCI & TECH
Filing Date
2025-12-25
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In existing cellular vehicle-to-everything (C-V2X) communication, the probability of data packet collisions caused by hidden terminal interference increases, affecting the scalability of the system. Furthermore, traditional channel resource allocation methods cannot effectively handle the collision probability analysis under different vehicle environments.

Method used

A spectrum resource allocation method based on multi-agent deep reinforcement learning is adopted, combined with a binary tree state space decomposition algorithm, to construct a discrete-time Markov chain model. By using a data packet transmission model and a PIR probability model, the training complexity is reduced, and highly reliable V2V communication is achieved.

Benefits of technology

It significantly reduces packet collisions caused by hidden terminal interference, improves the reliability and scalability of V2V communication, and meets millisecond-level communication latency requirements.

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Abstract

本发明属于车联网控制技术领域,具体公开了一种隐藏终端影响下蜂窝车联网频谱资源分配方法。本发明首先提出一种数据包传输模型,用于刻画因两个或以上车辆访问同一信道资源并广播CAM而导致的数据包冲突概率,该模型能同时表征在不同车间距离与车辆密度下,由暴露终端和两种类型隐藏终端干扰引起的数据包碰撞概率。进一步提出了一种数据包间接收概率模型,用于描述连续两次成功数据包接收之间的时间间隔。此外本发明还设计了一种自适应多智能体强化学习方案,用于为每条V2V链路寻找最优的信道资源分配策略,同时引入一种基于二叉树的分层近似策略迭代机制,通过层次化分解状态空间和局部搜索最优策略搜索,以降低强化学习训练的计算复杂度。
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