期刊
IEEE SYSTEMS JOURNAL
卷 11, 期 1, 页码 128-139出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSYST.2015.2451156
关键词
Cloud computing; data downlink dissemination; safety message; VANET-cellular network; vehicular ad hoc network (VANET)
类别
资金
- General Research Fund from the Hong Kong Research Grant Council [120612]
- National Natural Science Foundation of China (NSFC) [61272462, 61272112, 61472287]
- Fundamental Research Funds for the Central University [2014211020202]
- U.K. Engineering and Physical Sciences Research Council [EP/J002186/1]
- Shanghai Oriental Scholar Program
In vehicular ad hoc networks (VANETs), efficient message dissemination is critical to road safety and traffic efficiency. Since many VANET-based schemes suffer from high transmission delay and data redundancy, the integrated VANET-cellular heterogeneous network has been proposed recently and attracted significant attention. However, most existing studies focus on selecting suitable gateways to deliver safety message from the source vehicle to a remote server, whereas rapid safety message dissemination from the remote server to a targeted area has not been well studied. In this paper, we propose a framework for rapid message dissemination that combines the advantages of diverse communication and cloud computing technologies. Specifically, we propose a novel Cloud-assisted Message Downlink dissemination Scheme (CMDS), with which the safety messages in the cloud server are first delivered to the suitable mobile gateways on relevant roads with the help of cloud computing (where gateways are buses with both cellular and VANET interfaces), and then being disseminated among neighboring vehicles via vehicle-to-vehicle (V2V) communication. To evaluate the proposed scheme, we mathematically analyze its performance and conduct extensive simulation experiments. Numerical results confirm the efficiency of CMDS in various urban scenarios.
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