標題: | An Energy-Efficient Sleep Scheduling With QoS Consideration in 3GPP LTE-Advanced Networks for Internet of Things |
作者: | Liang, Jia-Ming Chen, Jen-Jee Cheng, Hung-Hsin Tseng, Yu-Chee 資訊工程學系 Department of Computer Science |
關鍵字: | Discontinuous reception/transmission (DRX/DTX);internet of things (IoT);long term evolution-advanced (LTE-advanced);power saving;quality of service;sleep scheduling |
公開日期: | 1-三月-2013 |
摘要: | With the design of data communications in mind, 3GPP LTE-advanced (LTE-A) is probably the most promising technology for Internet of Things (IoT). For IoT applications, continuous low-rate streaming data may be reported from devices over a long period of time, imposing stringent requirements on power saving. To manage power consumption, 3GPP LTE-A has defined the discontinuous reception/transmission (DRX/DTX) mechanism to allow devices to turn off their radio interfaces and go to sleep in various patterns. Existing literature has paid much attention to evaluate the performance of DRX/DTX; however, how to tune DRX/DTX parameters to optimize energy cost is still left open. This paper addresses the DRX/DTX optimization, by asking how to maximize the sleep periods of devices while guarantee their quality-of-service (QoS), especially on the aspects of traffic bit-rate, packet delay, and packet loss rate in IoT applications. Efficient schemes to optimize DRX/DTX parameters and schedule devices\' packets with the base station are proposed. The key idea of our schemes is to balance the impacts between QoS parameters and DRX/DTX configurations. Simulation results show that our schemes can guarantee traffic bit-rate, packet delay, and packet loss rate while save energy of user equipments. |
URI: | http://dx.doi.org/10.1109/JETCAS.2013.2243631 http://hdl.handle.net/11536/24592 |
ISSN: | 2156-3357 |
DOI: | 10.1109/JETCAS.2013.2243631 |
期刊: | IEEE JOURNAL ON EMERGING AND SELECTED TOPICS IN CIRCUITS AND SYSTEMS |
Volume: | 3 |
Issue: | 1 |
起始頁: | 13 |
結束頁: | 22 |
顯示於類別: | 期刊論文 |