Analysis of DRX power saving with RRC states transition in LTE networks

Li Ping Tung, Li-Chun Wang, Cheng Wen Hsueh, Chung-Ju Chang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

7 Scopus citations

Abstract

The 3GPP Long Term Evolution (LTE) wireless technology provides high data rates and improved latency to the end users. Such improvement is obtained from the advanced MAC and PHY layer techniques, which exhaust the battery life of the User Equipment (UE) quickly. To save the power of UE, 3GPP LTE proposes a mechanism called Discontinuous Reception Mechanism (DRX) which lets the UE switch its RF module off when data needs not be transmitted. In this paper, we have developed an analytical model to derive the DRX power saving obtained by the UE in LTE system. Different from other work, the RRC (Radio Resource Control) states transition is considered. The time period for power saving operation is divided into several independent parts to derive the power consumption and the transmission delay. In addition, we introduce the real power consumption model into the derived power saving model to obtain the truly power consumption. The analytical results show the UE with lower packet arrival rate can effectively save more power when entering RRC-IDLE state, and there is a trade-off between the power consumption and the transmission delay.

Original languageEnglish
Title of host publication2015 European Conference on Networks and Communications, EuCNC 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages301-305
Number of pages5
ISBN (Electronic)9781467373593
DOIs
StatePublished - 12 Aug 2015
EventEuropean Conference on Networks and Communications, EuCNC 2015 - Paris, France
Duration: 29 Jun 20152 Jul 2015

Publication series

Name2015 European Conference on Networks and Communications, EuCNC 2015

Conference

ConferenceEuropean Conference on Networks and Communications, EuCNC 2015
CountryFrance
CityParis
Period29/06/152/07/15

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