PROJECT TITLE :

Energy-efficient link selection scheme in a two-hop relay scenario with considering a mobile relay

ABSTRACT:

Recently researches show that important energy saving can be achieved by introducing mobile relays into wireless sensor networks. But, due to the additional transceiver circuit energy and also the mobility energy consumed by the mobile relay, it's not continually higher to pass knowledge through the relay instead of to send it from source to destination directly. During this study, the authors study a unique link choice problem in a 2-hop relay situation where the relay has the flexibility to maneuver. In this scenario, information from source will be saw 3 kinds of links: the direct link, the initial relay link and also the adjusted relay link. From the energy-saving perspective, the optimal moving direction, the position adjustment criterion and the optimal position of the mobile relay are firstly studied through mathematical analysis. Based on a comprehensive discussion of the energy performances of these 3 types of links, and energy-efficient link choice theme is then presented. Each the amount of data to be sent and the space between source and destination are shown to be closely related to the link selection theme. Finally numerical simulations are carried out to verify the theoretical results.