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Abstract

Embodiments of a mobile communications system to service multiple users over same spectrum in a coordinated multi-user communication network and method are generally described herein. The serving signals for transmission to user equipment (UE) in spoke-and-hub configurations will utilize composited transfer functions (CTF) selected and characterized based on channel state information (CSI), which comprises of responses from probing signal sequences for multipath dominated propagation channels in accordance with a dynamic user distribution. A composited transfer functions (CTF) is a point-to-multipoint transfer function and is constructed by combining multiple point-to-point transfer functions. The combining and shaping are via beam forming optimizations in transmitters to be “user dependent” with enhanced responses to a selected user and suppressed responses to other users. The composited transfer functions (CTFs) are constrained by desired performance criteria, not as functions of directions in angles, but as functions indexed by user elements identifications in UE. These are referred as user indexed constraints. When operating in coordination modes, more UEs will be operational concurrently with suppressed interferences intended for other UE using the same frequency resources. The criteria for shaping the composited transfer functions may include those in many beam-shaping techniques, such as orthogonal beams (OB), quiet-zones, and others.

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First Claim