Paper Info
Title
Quality of Service Support under DRX Mechanism in LTE Advanced Wireless Networks
Abstract
Energy saving and quality of service (QoS) support are two important issues of Long-Term Evolution Advanced (LTE-A) wireless networks. Unfortunately, achieving high energy saving efficiency often implies degradation of QoS support. In this paper, we address the issue of QoS support under Discontinuous Reception (DRX), the power saving mechanism of LTE-A. Different from previous studies which analyzed average packet delay under DRX mechanism, we adopt packet loss ratio due to violation of delay bound as QoS requirements of real-time applications. The problem of QoS support under DRX mechanism is defined as an optimization problem to maximize average power saving under the constraint that the packet loss ratio is no greater than a pre-determined threshold. We derive packet loss ratio and energy saving efficiency given DRX parameter values and propose an approach to select appropriate DRX parameter values. Simulations are conducted to verify our analysis. We found that the analytical results match well with simulations. Moreover, the energy saving efficiency achieved by the selected DRX parameter values is very close to that of the optimum solution.
Year
DOI
Venue
2013
10.1109/VTCSpring.2013.6692726
VTC Spring
Keywords
Field
DocType
optimisation,power saving mechanism,lte advanced wireless networks,discontinuous reception,quality of service support,quality of service,drx mechanism,energy saving,long-term evolution advanced wireless networks,optimization problem,long term evolution,qos support,packet loss,wireless networks,real time systems
Discontinuous reception,Wireless network,Computer science,Network packet,Quality of service,Computer network,Packet loss,Optimization problem,High energy,LTE Advanced
Conference
ISSN
Citations 
PageRank 
1550-2252
3
0.42
References 
Authors
6
3
Name
Order
Citations
PageRank
Tsern-Huei Lee124430.63
Cheng-Jie Tsai241.82
Tzu-Han Wu340.81