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
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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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