Local information storage protocol for urban vehicular networks

Authors:
Bo Xie;Yingwen Chen;Ming Xu;Yuangang Wang
Affiliations:
Dept. of Network Engineering, School of Computer, National University of Defense Technology, Changsha, China;Dept. of Network Engineering, School of Computer, National University of Defense Technology, Changsha, China;Dept. of Network Engineering, School of Computer, National University of Defense Technology, Changsha, China;Huawei Technologies Co., Ltd., China
Venue:
WASA'13 Proceedings of the 8th international conference on Wireless Algorithms, Systems, and Applications
Year:
2013

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Abstract

Local information dissemination is a potential application of VANETs. By cooperative communication among vehicles, the information could be stored in a certain size of region for some time. However, it is difficult to determine the size for time requirement. Moreover, it is not suitable to use too large size for the consideration of communication overhead on the whole network. This paper focuses on a common traffic flow in urban road network, and proposes a distributed protocol for persistent local information storage (LISP). We firstly give an approximated size of the region under the condition of time requirement. We propose a novel mechanism of header responsibility to suppress the impact of broadcast storm and reduce storage consumption on vehicles. The simulation results show good performance in various scenarios. Our protocol could satisfy the time requirement with much lighter overhead of storage consumption.