We study user cooperation to enhance the physical layer security. Specifically, the source
cooperates with friendly intermediate nodes to transmit message securely in the presence of …

Mobile crowd sensing has emerged as an appealing paradigm to provide sensing data for
its efficient economy. A large number of incentive mechanisms has been proposed for …

Mobile crowd sensing, also called crowd sensing over smartphones, has been an appealing
paradigm for collecting sensory data over a vast urban area, due to advantages of low …