DOWNLINK SCHEDULING IN NOMA BASED COMMUNICATIONS SYSTEMS

摘要

There are provided a base station, a mobile station and a method for downlink scheduling by the base station. The base station comprises a scheduling unit, configured to assign a downlink resource block and a number of streams, an antenna port, and a scrambling identity for the antenna port to a mobile station, wherein a combination of the number of streams, the antenna port and the scrambling identity determines a successive interference cancellation order of the mobile station in the downlink resource block; and a transmitting unit, configured to transmit downlink scheduling information to the mobile station, the downlink scheduling information including information indicating the downlink resource block and information indicating the number of streams, the antenna port and the scrambling identity. The base station, the mobile station, and the method for downlink scheduling may support a wireless communication system combining non-orthogonal multiple access with dynamic single-user/multi-user multiple-input and multiple-output for use, while increasing signaling overhead to as small as possible.