节点缓存受限场景下车载自组织网络拥堵特性研究

车载自组织网络作为一种新型的移动自组织网络,是智能交通系统的关键组成部分。近年来,社会各界对车载自组织网络的拥堵性进行了广泛研究,但却忽略了车载自组织网络中移动节点缓存空间有限的现实问题。因此,针对节点缓存受限场景下车载自组织网络的拥堵性问题进行了研究,通过设计来优化网络中数据包的传递过程。仿真实验的结果表明,提出的多跳路由策略可以有效降低网络通信过程的时延和丢包率;节点缓存在一定范围内增加可以提高网络的通信能力;节点通信半径或数据包传递能力的增加可使网络处理数据包的数量提高1.1倍。所建立的研究方法和得到的研究结论可为设计和优化车载自组织网络提供科学依据。研究表明,车载自组织网络的拥堵性研究还存在许多关键技术未突破,节点缓存受限场景下的多跳路由策略优化了网络中数据包传递过程,提高了网络通信效率和可靠性。

Research on Congestion Characteristics of Vehicular Ad Hoc Networks under Limited Node Cache

As a novel type of mobile Ad Hoc Network,the Vehicular Ad Hoc Network(VANET)has become an important component of the intelligent transportation system.Currently,many researchers have been engaged in the research on the congestion of VANET.However,few of them have noticed the practical problem of limited cache of mobile nodes in VANET.Therefore,the congestion problem of VANET under limited node cache is studied,and the data packet delivery process in the network by designing a multi-hop routing strategy is optimized.Simulation results show that the multi-hop routing strategy proposed in this paper can effectively reduce the delay and packet loss rate of the communication process in VANET.The increase of the node cache within a certain range can improve the communication capacity of VANET.The number of data packets processed in VANET can be increased by 1.1 times through increasing node communication radius or data packet delivery capability.The research methods and conclusions can provide reference for designing and optimizing VANET for future researches.Studies show that there are still many technologies in the research the congestion problem of VANET under limited node cache that has not yet been broken through.The multi-hop routing strategy in the context of node cache limitation optimizes the data packet delivery process in the network and improves the efficiency and reliability of network communication.