NDLI: Optimization of discontinuous reception (DRX) operation during intra-LTE handover

Content Provider	IEEE Xplore Digital Library
Author	Yu Liu Huynh, M. Mangla, A. Ghosal, D.
Copyright Year	2013
Description	Author affiliation: Dept. of Comput. Sci., Univ. of California, Davis, Davis, CA, USA (Ghosal, D.) \|\| AT&T Labs., Inc., San Ramon, CA, USA (Huynh, M.; Mangla, A.) \|\| Dept. of Electr. & Comput. Eng., Univ. of California, Davis, Davis, CA, USA (Yu Liu)
Abstract	Long Term Evolution (LTE) is being widely deployed to support real-time applications, such as voice over IP and video games. These applications require low latency guarantee during handover since long handover latency can severely impact user satisfaction. As a result, providing seamless communication when UE moves from one eNodeB to another while a session is in progress is an important design goal of the LTE network. The Discontinuous Reception (DRX) mechanism, which is widely adopted in LTE to conserve the mobile phone's battery resources, results in higher handover latency due to its sleep period. In this paper, we present a detailed analysis on the impact of DRX on intra-LTE handover. Based on the analysis, we propose a new method, which is named Longer Awake Time, to minimize the handover latency without increasing the power consumption. Based on simulation analysis, we show that while the existing DRX method increases the user's battery lifetime, it also increases the handover latency. By using Longer Awake Time method to adjust On Duration Timer appropriately, the handover latency decreases to the same level as when the DRX is disabled without decreasing the UE's battery lifetime.
Starting Page	1
Ending Page	6
File Size	543286
Page Count	6
File Format	PDF
ISBN	9781479929696
DOI	10.1109/GIIS.2013.6684369
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-10-28
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Power demand Handover Delays Batteries Long Term Evolution Tuning
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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