Coordinated Scheduling Based on Automatic Neighbor Beam Relation

Abstract

We consider a network with Massive Multiple Input Multiple Output (M-MIMO) base stations using a Grid of Beams (GoB) for data and control channels. 5G allows to establish interference relations between beams of neighboring cells. Such relations can be used to automatically generate a beam relation matrix, denoted as Automatic Neighbor Beam Relation (ANBR) matrix that can be very useful for optimizing different resource allocation processes. This paper shows how the ANBR matrix can be used to coordinate scheduling of neighboring cells with a small amount of information exchange. The coordination is performed by judiciously muting or reducing the bandwidth of certain beams in the process of Multi-User (MU) Proportional Fair (PF) scheduling. Numerical results show how the coordination approach can bring about significant performance gain.