LTE-D2D Communications to Smart Grid Applications with Reliability and Latency Constraints

Device-to-device (D2D) communication is a potential technology to improve capacity and energy efficiency of the current wireless communication systems. This work is focused on the application of D2D communication underlaying LTE network for distributed automation (DA) in the smart grid (SG) context. The communication aspects of SG and DA are introduced, and considering the strict reliability and latency constraints imposed by IEC 61850 standard, it is presented a resource allocation optimization problem for such scenario. The optimization problem is a mixed-integer non-linear program, with a non-convex feasible set, i.e., it is a NP-hard problem, which is relaxed by replacing non-convex by convex constraints. Finally, the multi-hop and full-duplex communication concepts are briefly introduced in the resource allocation problem, as promising technologies. Keywords—Smart grid, D2D, LTE, resource allocation, reliability, latency, IEC 61850.