A Joint Evaluation of Energy-Efficient Downlink Scheduling and Partial CQI Feedback for LTE Video Transmission

Salman, Mustafa Ismael and Mansoor, Ali Mohammed and Jalab, Hamid Abdullah and Sabri, Aznul Qalid Md and Ahmad, Rodina (2018) A Joint Evaluation of Energy-Efficient Downlink Scheduling and Partial CQI Feedback for LTE Video Transmission. Wireless Personal Communications, 98 (1). pp. 189-211. ISSN 0929-6212, DOI https://doi.org/10.1007/s11277-017-4863-2.

Full text not available from this repository.
Official URL: https://doi.org/10.1007/s11277-017-4863-2


A green cellular technology is proposed to optimize the energy and spectrum resources. Such optimization will require perfect channel state information at the transmitting base station. However, reporting the channel status of the entire bandwidth requires huge undesirable feedback overhead. Therefore, the aim of this paper is to optimize the energy and bandwidth resources while maintaining quality-of-service at the downlink when a partial feedback is considered. In this paper, a modified downlink scheduler based on a Packet Prediction Mechanism (PPM) is conducted at the eNodeB to optimize the energy and spectrum resources. On the user equipment side, a partial channel feedback scheme based on an adaptive feedback threshold is developed. A primary concern of this feedback scheme is to reduce the uplink signaling overhead without a substantial loss in downlink performances. Finally, the downlink packet scheduling and the partial feedback are jointly evaluated to further enhance the system performance. Based on a system-level simulation results, the proposed energy-efficient scheduling with partial feedback has achieved an improvement in EE of up to 79% compared to the PPM scheduler. Besides, it minimizes the degradation caused by the partial channel quality indicator feedback. Thus, the proposed two-sided algorithm gives the best tradeoff between uplink and downlink performances.

Item Type: Article
Funders: Fundamental Research Grant Scheme (FRGS), Project: FP007-2016 from Ministry of Higher Education, Malaysia
Uncontrolled Keywords: Energy efficiency; LTE; Partial CQI; QoS; Spectral efficiency
Subjects: Q Science > Q Science (General)
Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Q Science > QA Mathematics > QA76 Computer software
Divisions: Faculty of Computer Science & Information Technology
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 22 Mar 2019 05:53
Last Modified: 05 Feb 2020 02:26
URI: http://eprints.um.edu.my/id/eprint/20794

Actions (login required)

View Item View Item