A Multi-Stage Hybrid Scheduler for Codebook-Based MU-MIMO System

Jingxiu LIU  Xiaoming SHE  Lan CHEN  Hidekazu TAOKA  

IEICE TRANSACTIONS on Communications   Vol.E92-B    No.6    pp.2303-2307
Publication Date: 2009/06/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E92.B.2303
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
precoding,  multi-user scheduling,  codebook,  Max C/I,  PF,  

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In this paper, we propose a multi-stage hybrid scheduling scheme for codebook-based precoding systems, which provides a framework to apply different scheduling criterions at different scheduling stages for selecting user equipment (UEs). Numerical simulation results show that the proposed scheme effectively fills the performance gap between maximum carrier-to-interference (Max C/I) power ratio and Proportional Fairness (PF) methods, and provides an important means at the media access control (MAC) layer to lever between aggregate cellular throughput and geometry-specific per-user fairness, in order to meet the requirements of more precise quality of service (QoS) provision for future mobile communication systems.