Paper Info
Title
QoS provisioning in LTE-A networks with relay nodes
Abstract
In the vision of heterogeneous networks, the Quality of Service provided by classic cellular systems is improved thanks to a jointly adoption of macro and small-range cells (i.e., micro, pico, and femtocells) working in the same area. This rationale has been also assimilated by 3GPP, which now proposes its possible exploitation in the upcoming Long Term Evolution-Advanced architecture. In this context, the wireless relay technology represents an interesting solution for extending the coverage of a macrocell by means of a relay node which offers wireless connectivity to mobile users and, at the same time, is connected to the eNode-B (and hence to the backbone) through a wireless backhaul link. But, the standard does not specify any optimal resource allocation strategy for the two hop path formed by the user and the backhaul links, which is indeed very relevant to satisfy the level of QoS expected by end users. To this aim, in the present contribution, we present a novel scheduling strategy, conceived as an extension of the recently proposed Two- Level Scheduler approach, able to effectively support real-time applications in the presence of relay nodes. Its performance has been tested in several network scenarios that involve a variable number of users hosting real-time multimedia applications and best effort flows. A comparison with respect to Proportional Fair and Logarithmic strategies has been also provided, showing that the proposed approach is able to greatly reduce the Packet Loss Ratio experienced by multimedia applications, at the expense of a slight impairment of the throughput of the best effort flows.
Year
DOI
Venue
2012
10.1109/WD.2012.6402823
Wireless Days
Keywords
Field
DocType
3G mobile communication,Long Term Evolution,cellular radio,multimedia systems,quality of service,resource allocation,3GPP,LTE-A networks,Long Term Evolution-advanced architecture,QoS provisioning,cellular systems,eNode-B,heterogeneous networks,multimedia applications,packet loss ratio,quality of service,relay nodes,resource allocation,two-level scheduler approach,wireless backhaul link,wireless relay technology,Frame Level Scheduler,LTE-A,QoS,real-time services,relay nodes
Mobile QoS,Femtocell,Backhaul (telecommunications),Computer science,Scheduling (computing),Quality of service,Computer network,Heterogeneous network,Proportionally fair,LTE Advanced,Distributed computing
Conference
ISSN
ISBN
Citations 
2156-9711 E-ISBN : 978-1-4673-4403-6
978-1-4673-4403-6
4
PageRank 
References 
Authors
0.43
5
4
Name
Order
Citations
PageRank
Giuseppe Piro188858.20
Luigi Alfredo Grieco21852104.72
Gennaro Boggia3116078.53
Pietro Camarda482251.74