Maruzen Co., Ltd/Maruzen Kabushikikaisha;The Institute of Electronics, Information and Communication Engineers
Abstract:
摘要： To lengthen the operational time of mobile devices, power must be managed effectively. To achieve this objective, a Discontinuous Reception (DRX) mechanism is proposed for use in the long-term evolution (LTE) network to enable user equipment (UE) to consume power efficiently. The DRX mechanism provides parameters related to base stations such as evolved Node B (eNB) to configure and manage the transition of UEs between idle (sleep) and active states. Although these parameters can be adjusted dynamically in cooperation with the traffic scheduler, a high signaling overhead and processing load might be introduced in practical deployment if the parameters are adjusted too frequently. In this study, to examine power-saving efficiency, distinct traffic types were scheduled that were constrained by various quality of service (QoS) factors without dynamically changing the DRX parameters. The concept of burst-based scheduling is proposed, based on considering the state transitions and channel conditions of each UE, to increase power-saving efficiency while concurrently satisfying the desired QoS. Both Hypertext Transfer Protocol (HTTP) and video-stream traffic models were exhaustively simulated to examine the performance of the proposed scheme and numerous scheduling alternatives were tested to compare the proposed scheme with other schemes. The simulation results indicate that video-streaming traffic is more sensitive to the scheduling schemes than HTTP traffic. The simulation results were further analyzed in terms of traffic scheduling and parameter adjustment and the analysis results can help design future studies on power management in the LTE network. 其他題名： IEICE Trans. Commun. 出版者： The Institute of Electronics, Information and Communication Engineers 出版日期： 2014 出處： IEICE Transactions on Communications, 2014, Vol.E97.B(10), pp.2212-2221 資源來源： Alma/SFX Local Collection 版權： 2014 The Institute of Electronics, Information and Communication Engineers 識別號： ISSN: 0916-8516 識別號： ISSN: 1745-1345 識別號： EISSN: 1745-1345 識別號： DOI: 10.1587/transcom.E97.B.2212
