NDLI: An application aware discontinuous reception mechanism in LTE-advanced with carrier aggregation consideration

Content Provider	Springer Nature Link
Author	Yin, Fei
Copyright Year	2012
Abstract	3GPP Release 8 specifications define a mechanism named DRX (Discontinuous Reception) to save UE’s (User Equipment) energy consumption in LTE (Long Term Evolution). The DRX allow an UE to stop monitoring PDCCH (Physical Downlink Control CHannel) on a CC (Component Carriers) during some periods of the operation time. Obviously, the duration and the frequency of these non-monitoring periods are important parameters that can significantly impact the ES (Energy Saving) efficiency and the performance of applications running on the CC. In Release 9, 3GPP introduces an advanced technology named CA (Carrier Aggregation) for LTE-Advanced to achieve higher bandwidth and throughput: the UE may operate over up to 5 CCs. The conventional DRX operations are no longer appropriated in the CA case: applying the same DRX configuration for all the CCs is neither performance-optimal nor energy-efficient if applications with different QoS requirements operating simultaneously on the CCs in realistic environment. A DRX mechanism by taking both applications’ QoS requirement and CA into account to achieve reasonable ES might be an optimal choice. In this paper, based on the survey of various conventional DRX energy saving protocols in LTE networks, we propose a simple but efficient application aware DRX mechanism to optimize the performance in LTE-Advanced networks with CA consideration. The simulation results verify that the ES efficiency is conditioned to the fulfillment of the DRX parameters, and our proposed optimal scheme can significantly improve energy saving efficiency as compared to the conventional DRX mechanism.
Starting Page	147
Ending Page	159
Page Count	13
File Format	PDF
ISSN	00034347
Journal	Annales Des Télécommunications
Volume Number	67
Issue Number	3-4
e-ISSN	19589395
Language	English
Publisher	Springer-Verlag
Publisher Date	2012-02-18
Publisher Place	Paris
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	LTE-advanced Discontinuous reception Carrier aggregation Component carrier Energy saving R & D/Technology Policy Communications Engineering, Networks Information and Communication, Circuits Signal, Image and Speech Processing Information Systems and Communication Service Computer Communication Networks
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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