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Mobile crowd sensing excitation method, device and system and storage medium

A technology of mobile crowd sensing and real location, which is applied in the fields of information security and privacy protection, can solve the problems of no computing and communication overhead, and achieve the effect of minimizing social costs and low error rate

Active Publication Date: 2021-06-15
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention provides a mobile crowd sensing incentive method, device, system and storage medium, which can solve the problem of how to protect the privacy of tasks and workers' locations and how to minimize social costs under an honest but curious untrusted platform , How to meet the requirements of the task quality, based on the reverse auction to motivate workers to participate, using the differential privacy index mechanism to protect bilateral location privacy, using the winner selection algorithm and winner reward decision algorithm to meet the ideal nature of the auction (individual rationality, honesty , calculation effectiveness), compared with the existing technology, when the platform is untrustworthy, it not only ensures that there is no large calculation and communication overhead, but also allows the worker's strategic behavior, while supporting the protection of bilateral (task / worker) location privacy to meet Worker privacy needs, support for ensuring task quality perception to meet requester's task quality requirements, support for social cost minimization to meet system goals

Method used

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  • Mobile crowd sensing excitation method, device and system and storage medium
  • Mobile crowd sensing excitation method, device and system and storage medium
  • Mobile crowd sensing excitation method, device and system and storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] like figure 1 and figure 2 As shown, this embodiment provides a mobile crowd sensing incentive method, the method is mainly implemented through a server platform, including the following steps:

[0080] S101. Count the real task location distributions of all task requesters.

[0081] In this embodiment, the target area is divided into grids, and the center of the grid represents the task position / worker position, 1, and respectively represent the position before and after the disturbance of the differential privacy index mechanism and the estimated position, l, Each grid is denoted as g e , e=1,...,|L|. The set of requesters in the system is expressed as R={r 1 ,r 2 ,...,r h}, the number of requesters is h, r k ,k=1,...,h represents the kth requester, and the worker set is expressed as W={w 1 ,w 2 ,...,w n}, the number of workers is n, w i ,i=1,...,n represents the i-th worker, and the task set is expressed as T={t 1 ,t 2 ,...,t m}, the number of tas...

Embodiment 2

[0156] like image 3 As shown, the present embodiment provides a mobile crowd sensing incentive device, which is applied to a server platform, and includes a task real position distribution statistics module 301, a task position disturbance function generation module 302, a task position estimation module 303, a worker position Disturbance function generation module 304, worker bid set generation module 305 and winner selection and remuneration decision module 306, the specific functions of each module are as follows:

[0157] The task real location distribution statistical module 301 is used to count the task real location distribution of all task requesters.

[0158] The task location disturbance function generation module 302 is used to formulate a task location disturbance function that satisfies differential privacy, and broadcast it to each task requester, so that each task requester disturbs its own task location, and obtains the task location disturbance function accor...

Embodiment 3

[0165] like Figure 4 As shown, the present embodiment provides a mobile crowd sensing incentive system, which includes a trusted center (Trust Center, TC) 401, a task requester 402, a perception worker 403, and a server platform 404, and the server platform 404 communicates with the available The letter center 401, the task requester 402, and the perception worker 403 are connected, and the trusted center 401 is connected with the task requester 402. The details are as follows:

[0166] The trusted center 401 is used to generate a blinding factor key and send it to each task requester; the trusted center includes a blinding factor key generating module.

[0167] Furthermore, the trusted center 401 can be a computer with computing and communication capabilities, but assuming that there will be no malicious behavior or malicious attack, its behavior is mainly: receiving notification from the server platform; When generating the key; then send the blind factor key to the task r...

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Abstract

The invention discloses a mobile crowd sensing excitation method, device and system and a storage medium. The system comprises a trusted center, a task requester, a sensing worker and a server platform. The trusted center is used for generating a blind factor key and helping the server platform to obtain probability distribution of a real position of a task; the task requester is used for generating a task blind frequency vector, generating a task disturbance position and sending a result and a task description file to the server; the sensing worker is used for disturbing the position of the sensing worker and sending the disturbed position and bidding information to the server; and the server platform is used for counting the real position distribution of the task, issuing a position disturbance function, receiving a disturbance position to estimate the position of the task and generate a bidding task set of the workers, and selecting a winner from the bidding workers and deciding a reward. According to the method, the ideal property of auction and the privacy of bilateral positions are met, and approximate minimization of social cost under an untrusted platform is realized.

Description

technical field [0001] The invention relates to a mobile crowd sensing excitation method, device, system and storage medium, and belongs to the technical field of information security and privacy protection. Background technique [0002] With the popularization of mobile intelligent terminals represented by smart phones and smart watches, related industries have shown a blowout growth, and mobile crowd sensing has been widely used as an emerging paradigm. Usually, workers are unwilling to participate if they are not motivated enough due to the consumption of network bandwidth, memory, CPU, battery usage, personal time, travel expenses, etc. Therefore, an incentive system based on reverse auction has been proposed to attract and Recruit workers. However, when users provide location-based services, workers are required to provide location information. If workers’ location data is directly uploaded, it is vulnerable to platform and third-party attackers, which may lead to phys...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q30/08G06Q30/02G06F21/62
CPCG06Q30/0207G06Q30/08G06F21/6245Y02D30/70
Inventor 张幸林钟滢
Owner SOUTH CHINA UNIV OF TECH
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