Research And Implementation Of Mobile Crowdsourcing Strategy For Non-deterministic Vehicular Team-Cooperation In Blockchain

With the development of smart cities,the Internet of Vehicles(IoV)has attracted extensive attention from researchers.Intelligent vehicles can form vehicle teams through multi-party cooperation to perform mobile crowdsourcing tasks in smart cities.How to form a vehicle team to establish a safe model to achieve maximum social welfare has become a huge challenge in the mobile crowdsourcing activities of vehicles.Although the current research has proposed some mobile crowdsourcing models,few researchers pay attention to real-time vehicle teamwork.What’s more,the congestion caused by traffic pressure brings inconvenience to people’s lives and also brings opportunities.The effective use of leisure team resources has become an emerging research interest for researchers.In response to the above problems,the mobile crowdsourcing security model which uses the leisure computing vehicle team as the minimum task division unit is proposed first.We named the model as the blockchain-based non-deterministic team cooperation perception(BNTC)model.Real-time tasks can be assigned to one or more vehicle teams by the BNTC model.The BNTC model selects the right teamset through the attributes of the team to maximize social welfare.Based on the VCG mechanism of reverse auction,we design a task allocation algorithm and a reward pricing algorithm.In order to determine the task allocation rules,we propose an optimized reverse auction mechanism based on the knapsack algorithm(WTS),which takes into account the task completion rate,social costs and the number of selected teams.For the reward pricing mechanism,we consider the influence of reputation factors on key pricing,named as CTP algorithm.These two algorithms can ensure that the model maximizes social welfare.In addition,we also propose a general framework based on blockchain to solve trust problems and security challenges.Based on theoretical analysis and a lot of simulations,experiments prove that the performance of the model is better than traditional algorithms.We can achieve maximum social welfare.Ethereum’s experiments show that the model can be operated at a reasonable cost.