Offloading Selection with Unequal Timeslot in Mobile Edge Computing

The growth of Internet-of-Things increases the number of mobile devices and computationally heavy applications. However, mobile devices typically have insufficient computation capability and battery capacity because of their small physical size. Mobile-edge computing (MEC) is a prac-tical approach to solve these problems, where mobile devices offload their tasks to the MEC server instead of computing them locally. To avoid packet collision between the different packet lengths, we propose to split the transmission frame into multiple timeslots with unequal time lengths. Selecting a transmission timeslot based on the packet length can reduce the number of packet collisions caused by a long-length packet. Simulation results show that the proposed scheme can improve the transmission success rate with fewer retransmissions and the processing delay of tasks compared to the ALOHA-based protocol.