CoCoChain:一个概念意识的共识协议,用于安全的传感器数据交换在车辆特设网络
Rubén Juárez1, Ruben Nicolas-Sans1, José Fernández Tamames1
1School of Engineering, Science, and Technology, UNIE Universidad, Calle Arapiles, 14, 28015 Madrid, Spain.
Sensors (Basel, Switzerland)
|October 16, 2025
概括
CoCoChain通过使用概念向量而不是完整的消息有效载荷来改善车辆特设网络 (VANET) 的区块链共识. 这减少了开销和延迟,提高了安全关键的V2X通信.
科学领域:
- 计算机科学 计算机科学
- 网络安全 网络安全
- 分布式系统 分布式系统
背景情况:
- 车辆特设网络 (VANET) 需要低延迟,可靠的V2X通信,以确保安全性和流量优化.
- 传统的区块链共识机制 (BFT-style) 面临着VANET中高消息开销和延迟的挑战,阻碍了完整性和可审计性.
研究的目的:
- 引入CoCoChain,一个新的概念意识共识机制,旨在解决VANET中传统BFT共识的局限性.
- 通过减少消息开销和延迟来提高基于区块链的V2X通信的效率和性能.
主要方法:
- CoCoChain使用稀疏自编码器 (SAE) 来将原始消息有效负载编码为低维概念向量.
- 在共识过程中,只播放top-k激活 (语义消化),并集成到具有语义检查的实际BFT工作流中.
- 在城市,高速公路和多跳转广播场景中使用OMNeT++/SUMO进行了模拟,包括对抗性攻击和跨层压力.
主要成果:
- CoCoChain 将共识消息的开销降低了25%,确认延迟降低了20%.
- 该机制保持了数据完整性,最高可达20%的拜占庭参与者.
- 信息新鲜度,以信息时代 (AoI) 衡量,在高频道负载下得到改善.
结论:
- CoCoChain提供了一个针对VANETs量身定制的高效和安全的共识机制,提高了性能和信息的及时性.
- 语义意识的方法有效地平衡了V2X通信系统中的安全性,开销和延迟.
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