车联网实时可靠通信保障及优化关键技术研究

In recent years, the popularity of vehicles brings great convenience to people's life. Meanwhile it also results in various problems such as traffic accidents and road congestions. To tackle these issues, researchers raise a new concept vehicular networks, which leverages realtime and reliable communications and cooperations among vehicles, roads, and human in order to achieve safety, intelligent transportation, and on-road entertainment. This proposal targets the three objectives above. Specifically, we plan to conduct optimization study in three levels: network level, service level, and system level, and propose a series of optimization schemes for vehicular networks: ① network level, hierarchical model for vehicular network communications assurance and optimization, low-latency and collision avoidance MAC protocols, realtime and reliable communications assurance and optimization oriented routing algorithms under uncertainty; ② service level, realtime and reliable communications assurance and optimization schemes for safety and intelligent transportation; ③ system level, cross system/network realtime and reliable communications assurance and optimization algorithms. Based the proposed research, this project is expected to produce a realtime and reliable communications assurance and optimization oriented prototype system for vehicular networks, and provide solid theoretical and technical support for vehicular network based applications.

近年来汽车的普及给人民生活带来了极大便利，但也同时带来了交通事故、道路拥堵等社会问题。为此，业界提出了车联网概念，旨在通过人、车、路之间的实时可靠通信和协作来实现主动安全、智能交通和信息娱乐三方面应用，从而提高汽车出行的安全性、高效性和舒适性。本项目旨在面向这三类应用，针对车联网网络异构复杂的特性，通过在传输、服务和系统三个层面上的优化调度研究，设计一整套符合车联网特性的优化机制，主要研究内容包括：①网络层面：面向车联网通信保障优化的异构非线性复杂网络模型、低延迟和冲突避免保障的MAC协议、非确定性环境下的实时可靠通信保障及优化的路由算法；②业务层面：面向主动安全和智能交通的车联网实时可靠通信保障及优化机制；③系统层面：跨异构网络和跨系统的实时可靠通信保障及优化机制。基于以上研究成果，本项目将最终开发实时可靠通信保障及优化的车联网原型系统，为推动车联网技术走向应用提供坚实的理论和技术支撑。

在国家自然科学基金“车联网实时可靠通信保障及优化关键技术研究（61379131）”的资助下，我们面向车联网在主动安全、智能交通和信息娱乐三方面应用，针对车联网网络异构复杂的特性，在传输、服务和系统三个层面上的展开了关于车联网实时可靠通信保障和优化调度的深入研究，共发表标注基金资助文章15 篇，其中SCI 期刊、EI 期刊与会议文章15篇，申请受理发明专利2项，基本完成申请书中提出的任务。特别值得一提的是，由于课题组追求研究和文章的质量，因此几乎所有的成果均发表在相关领域的CCF B类以上的顶级会议如INFOCOM、ICDCS、ICDM、IWQoS和多个IEEE Transactions上。此外，在本报告撰写时，课题组仍有6篇文章在投，其中有3篇期刊论文处于第二轮或第三轮修改状态。总而言之，在本项目的资助下，课题组在车联网实时可靠通信保障和优化等方面均取得了一系列较好的理论成果。