The User Participation Incentive Mechanism of Mobile Crowdsensing Network Based on User Threshold

Table 1

Main symbols.

Ai	The i^th participant
N	Total number of participants
N(t)	The percentage of participants at time t
Mi	Number of subtasks completed by the i^th user
thresi	Participation threshold for user i
Ci	Forecast effort for the i^th user
B	Budget for the i^th user
B(t)	Percentage of budget reserve at time t
Ui	The utility of the k^th subtask
Ik	The bid calculated by server for subtask k
λ	Total task size
λk	Size of each subtask
T	General tasks
K	Number of subtasks
λ(t)	Proportion of tasks completed at time t