Method and system for a reduced-complexity scheduling for a network mimo with linear zero-forcing beamforming
AssigneeAlcatel Lucent
InventorAntonia TULINO
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Abstract
Example embodiments are directed toward a system and a method for downlink scheduling in a multi-user, multiple-input and multiple-output (MU-MIMO) network with a central controller employing a scheduling scheme pre-selecting user equipment according to probabilities obtained from a large-system analysis. Only pre-selected user equipment is requested to feedback channel state information, thereby reducing cluster interference and increasing throughput while greatly reducing the required feedback channel state information generally required to schedule transmissions.
Claims20
A system for downlink scheduling, the system comprising:
- a central controller configured to control downlink scheduling for a cluster of one or more base stations serving user groups, each user group including a plurality of co-located user equipments,
- the central controller configured to pre-select a number value of user equipments for each respective user group, without first receiving channel state information from the co-located user equipments of the user groups,
- the pre-selection being based on at least one parameter.
A method for downlink scheduling, the system comprising:
- controlling, by a central controller, downlink scheduling for a cluster of one or more base stations serving user groups, each user group including a plurality of co-located user equipments, the controlling step including,
- pre-selecting a number value of user equipments for each respective user group, without first receiving channel state information from the co-located user equipments of the user groups,
- the pre-selection being based on at least one parameter.
Dependencies are inferred from the claim text.