Patent ID: 8611279
Filing Date: 2013-12-17
Classification: H04B,H04W

Abstract:
1. A method for building sets of mobile stations in a radio communication network, said method comprising: transmitting reference signals from a base station for being able to determine channel properties of a downlink channel between said base station and at least two mobile stations; receiving said reference signals by said at least two mobile stations; determining a first feedback information at a first one of said at least two mobile stations and a second feedback information at a second one of said at least two mobile stations comprising each a first component indicating a channel quality of a downlink beam with a largest received carrier power of at least three downlink beams of said downlink channel and a second component indicating said downlink beam with said largest received carrier power; transmitting said first feedback information and said second feedback information from said first one and said second one of said at least two mobile stations to said base station; receiving said first feedback information and said second feedback information at said base station; and building a mobile station set of at least two of said at least two mobile stations according to said first feedback information and said second feedback information at said base station, wherein said method further comprises: employing a minimum beam distance mode with selecting a first one and a second one of said at least three downlink beams for scheduling said at least two mobile stations and with selecting at least a third one of said at least three downlink beams spatially located between said first one and said second one of said at least three downlink beams and said third one of said at least three downlink beams is not being used for scheduling, and employing a fixed relations mode with said first one and said second one of said at least two mobile stations determine a channel quality with fixed relations between said at least three downlink beams based on a signal-to-interference ratio or a signal-to-interference-plus-noise ratio estimated by an output of a transceiver of said first one and said second one of said at least two mobile stations, employing said minimum beam distance mode or said fixed relations mode as a function of a current angular beam spread of said at least three downlink beams.