Trust-Aware Data Uploading Based on Device-to-Device Communications

Abstract

This paper investigates data uploading in cellular networks with the consideration of social trust relationship. A trust-aware data uploading scheme is proposed for a real network scenario by leveraging device-to-device (D2D) communications to minimize the total data uploading time. In this scheme, mobile devices cooperate with the trustworthy devices in the neighborhood to form the multi-hop D2D chains for uploading data, where the devices with the poor uplink channel quality are first considered to join D2D cooperation and the bottom to top mode is adopted to construct the D2D chains. To model the D2D chain formation, a coalition game is first developed, and then we devise a coalition formation algorithm to implement the formulated coalitional game. Simulation results show that our proposed scheme can effectively reduce the total data uploading time compared with the state-of-the-art scheme under the real network scenario.