Abstract
With the development of satellite-terrestrial technology and the popularity of the Internet of Vehicles, how to improve the efficiency of mobile cloud computing (MCC) has become the next concern. However, the resource of cloudlets is not sufficient to perform large-scale computation tasks, or some applications designed to run on vehicles have more efficiency executed on vehicles than executed on cloudlets. Additionally, it is still challenging for platforms to motivate mobile vehicle owners to join in the process while the existing mechanisms cannot provide all the desired properties in cloudlet scenarios. To this end, we design a satellite-terrestrial IoV based on an incentive mechanism for computation offloading (IMCO) in mobile edge computing to motivate vehicle owners to perform computation offloading tasks so as to offload certain kinds of tasks to the mobile vehicles. By optimizing the MCC model, we integrate auction theory into the mechanism to ensure individual rationality, budget balance, system efficiency, and truthfulness for both sellers and buyers. Through rigorous theoretical analysis, we prove that our mechanism can achieve computational efficiency under the condition that all algorithm outputs be computed in polynomial time. Both theoretical derivations and numerical calculations prove that all the desired properties of the mechanism hold.
Highlights
Along with advances in computing and communications technology, the Internet of Vehicles (IoV), which is gradually replacing conventional Vehicle Ad-hoc Networks, is becoming popular worldwide and creating a promising vision for transport systems
IoV is a distributed network [1] of huge commercial and research value that supports the use of data created by connected cars and vehicular ad-hoc networks (VANETs)
In order to overcome the above challenges, we propose an incentive mechanism for computation offloading (IMCO) that maximizes the motivation of vehicle owners to perform computation offloading tasks while guaranteeing the system stability and the privacy of participants
Summary
Along with advances in computing and communications technology, the Internet of Vehicles (IoV), which is gradually replacing conventional Vehicle Ad-hoc Networks, is becoming popular worldwide and creating a promising vision for transport systems. The design, implementation, and management of IoV technology rely heavily on modern cloud computing technologies, which play a central role in linking isolated vehicles into an organic network in which data are being processed primarily. Considering limitations such as the size of the data and the stability of the channel, cloud computing struggles to process efficiently and could cause fatal latency [2]. Since the existing auction algorithms cannot achieve all the properties when they are applied to computation offloading in MCC with cloudlets and vehicles as homogeneous items (4) We theoretically prove that our proposed mechanism is more suitable for real-life scenarios as it achieves truthfulness.
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