Multi-Helper NOMA for Cooperative Mobile Edge Computing

The next-generation wireless networks are expected to support a number of computation-intensive and delay-sensitive applications such as virtual reality (VR), autonomous driving, telesurgery unmanned aerial vehicles (UAVs). Since many devices computation power limited, mobile edge computing (MEC) has been deemed promising way enhance service. In this paper, we propose novel cooperative MEC that exploits the combination non-orthogonal multiple access (NOMA) helpers. proposed system featuring user, helpers base station (BS), user can simultaneously offload its tasks using NOMA when there is no strong direct transmission link between BS. Then, compute these through NOMA. Thus, in scheme, offloading modes at determined with respect optimized task decision factor. simulation results show NOMA-based significantly increases total data under latency constraints compared benchmark schemes one helper link.