Journal
IEEE INTERNET OF THINGS JOURNAL
Volume 9, Issue 19, Pages 18166-18181Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JIOT.2021.3075516
Keywords
Information exchange; Internet of Things; Relays; Public transportation; Edge computing; Decision making; Task analysis; Distributed information exchange; interrupt recovery; relay selection; vehicular fog computing (VFC)
Categories
Funding
- National Natural Science Foundation of China [61562005]
- Natural Science Foundation of Guangxi Province [2019GXNSFAA185042, 2018GXNSFBA281169]
- Natural Science Basis Research Plan in Guangxi Province of China Program [2018GXNSFAA281292]
- Guangxi Key Research and Development Plan [Guike AB19259006]
- Thousands of Young and MiddleAged Backbone Teachers Training Program for Guangxi Higher Education [Education Department of Guangxi (2017)] [49]
- Shenzhen Science and Technology Innovation Commission [R2020A045]
Ask authors/readers for more resources
This article proposes a scheme for achieving low-latency distributed information exchange in vehicular fog computing. By using public transportation facilities as fog nodes and dynamically adjusting data sampling frequency, the scheme reduces communication latency and optimizes information transmission.
Traditional decision making in a vehicle network includes uploading vehicle sensing data to faraway cloud platforms and then returning correlated results to the vehicles. The data have features of large quantity and high redundancy, which causes high communication latency and vehicle applications to deteriorate. Vehicular fog computing (VFC) is a new network paradigm that uses local fog nodes for decision making. However, how to achieve distributed information exchange with low latency is a challenging issue because the connectivity of the vehicle network is low due to vehicle mobility. In this article, a distributed information exchange scheme with low latency in VFC is proposed. First, considering the frequent changes in vehicle positions and the randomness in driving routes, public transportation facilities with a wider driving range such as buses and taxis are used as fog nodes to increase the probability of uploading data. Then, the fog nodes should dynamically adjust the data sampling frequency according to the time-space correlation of the data to ensure that only nonredundant data are received. To minimize the interruption latency caused by accidents during an exchange, the fog nodes evaluate and predict connection states among them and their neighboring vehicles when establishing exchanges. If a fog node finds that a vehicle cannot complete information exchange because the vehicle may move outside its communication range in a future period, it will recalculate an optimized relay route for the vehicle by using mixed integer programming. Theoretical analysis and simulation results show that compared with the existing work, the proposed scheme can completely exchange all vehicle data with lower latency.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available