دانلود رایگان مقاله طرح انگیزه ای فضایی - زمانی با آگاهی تقاضای مصرف کنندگان برای سنجش مشارکتی

Abstract

Participatory sensing involves smartphone users contributing data to form a body of knowledge. This paper first develops the concept of quality of contribution and consumption in the spatio-temporal sense for participatory sensing. Recognising that a significant issue which determines the success of participatory sensing is the incentive for contributors, we propose a spatio-temporal incentive (STI) scheme with consumer demand awareness. The STI scheme considers the spatio-temporal relevance between contributors and consumers and incentivizes contributors to contribute according to consumer demand. Only spatio-temporal relevant contributors for enquiry-based consumption and a subset of contributors which provide sufficient sensing coverage for coverage-based consumption are remunerated, which lead to a targeted and economical incentive scheme. Following the STI scheme, contributors and consumers determine their participation levels to maximize their utilities, and a resulting market equilibrium can be achieved, where the optimal contribution level and the optimal consumption rate, respectively, are employed. A closed form expression for the quality of consumption at the market equilibrium is derived. The performance of the STI scheme is investigated through extensive simulations, which show that good quality of consumption and sensing coverage can be experienced by consumers.

9. Conclusion

In this paper, we have proposed a spatio-temporal incentive scheme with consumer demand awareness for participatory sensing. Contributors are incentivized dynamically according to the consumer demand considering both enquiry-based consumption and coverage-based consumption. Only spatio-temporal relevant contributors for enquiry-based consumption and a subset of contributors which provide sufficient sensing coverage for coveragebased consumption are remunerated, which lead to a targeted and economical incentive scheme. A market equilibrium has been achieved where the optimal contribution level and optimal consumption rate are employed. The performance of the proposed incentive scheme has been investigated through extensive simulations which show improved quality of consumption and sensing coverage. In future work, we will investigate the effect of user, i.e. consumer and contributor, mobility on the performance of the proposed incentive scheme and validate our theoretical results on an actual smartphone-based participatory sensing platform which we have developed.