Multi-Tenant Base Stations: Algorithms and a Prototype

Multi-tenant multi-antenna base stations (MBS) allow multiple vertical industries or operators, acting as tenants, to run their networks on a single BS. The current implementation assumes spectrum orthogonality to ensure tenant network isolation. We propose an MBS without spectrum orthogonality requirement. A new duality concept is developed to allocate precoding weights and transmit power for MBS so that the minimum isolation level from interference between tenants is maximised. An MBS prototype is built and the over-the-air experiments show it provides a higher minimum isolation level and network capacity than other known algorithms.