Optimistic DRX for Machine-type Communications

  • 呂 尚霖

Student thesis: Master's Thesis

Abstract

In Long Term Evolution-Advanced (LTE-A) networks the Third Generation Partnership Project (3GPP) proposes machine-type communications (MTC) as a new paradigm where devices transfer data among themselves with limited human interaction For MTC devices power saving is an important issue In LTE-A networks the standard power saving mechanism called discontinuous reception (DRX) is designed for normal mobile users not for MTC devices In this thesis we propose the optimistic DRX (ODRX) mechanism to be suitable for MTC devices ODRX considers radio resource control (RRC) connection release and re-establishment to save more power We also introduce the optimistic flag to allow longer sleep period Analytical and simulation models are proposed to investigate the performance of ODRX which is then compared with the standard DRX and dynamic DRX (DDRX) through simulation experiments The results show that ODRX outperforms standard DRX and DDRX by gaining significant extra power saving with little extra wake-up latency We also propose guidelines to configure the ODRX parameters
Date of Award2016 Jul 20
Original languageEnglish
SupervisorMeng-Hsun Tsai (Supervisor)

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