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Study on State Dependent Radio Resource Scheduling for Downlink Traffic in LTE Networks

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Abstract

This study proposes a state dependent radio resource scheduling (SDRRS) scheme for downlink traffic to achieve a trade-off among energy saving, quality of service (QoS) satisfaction, and resource utilization in long-term evolution networks. The proposed scheme considers the QoS requirements and channel conditions of the user equipment (UE) and provides high spectrum efficiency. Furthermore, under the QoS constraint, the proposed scheme involves the burst-scheduling concept with respect to transitions between the active and the sleep states to adjust the inactivity timer for optimal energy utilization. Thus, the objective of the SDRRS scheme is to reduce the staying time of the UE in the active mode when the evolved Node B (eNodeB) does not schedule data transfer to it, for energy saving. Exhaustive simulations were conducted using two different traffic models, HTTP and video streaming services, for examining the proposed scheme. The simulation results showed that the proposed scheme achieves considerable energy saving compared with the traditional scheme.

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Acknowledgements

This research work was supported in part by the grants from the National Science Council (NSC) and Ministry of Science and Technology (MOST) (Grant Nos. NSC 101-2221-E-108-058, NSC 102-2221-E-008-015, and MOST 103-2221_E008-082), Taiwan, ROC.

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Authors and Affiliations

  1. Department of Communication Engineering, National Central University, Taoyuan City, Taiwan, ROC

    Yen-Wen Chen, Yen-Yin Chu & Chih-Wei Lai

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  1. Yen-Wen Chen
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  2. Yen-Yin Chu
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  3. Chih-Wei Lai
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Correspondence to Yen-Wen Chen.

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Chen, YW., Chu, YY. & Lai, CW. Study on State Dependent Radio Resource Scheduling for Downlink Traffic in LTE Networks. Wireless Pers Commun 96, 4709–4723 (2017). https://doi.org/10.1007/s11277-017-4412-z

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  • DOI: https://doi.org/10.1007/s11277-017-4412-z

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