Paper Info
Title
Spectral Efficiency and Fairness Tradeoffs in Cellular Networks with Realtime+Nonrealtime Traffic Mix Using Stochastic Petri Nets.
Abstract
Resource scheduling in OFDMA cellular wireless networks is a powerful technique on the MAC layer. Utilizing adaptive modulation and coding allows the effective use of all signal-to-interference ratio (SINR) ranges. Typical single antenna spectral efficiency values for LTE-Advanced range between 4.8 near the base station and 0.2 b/s/Hz at the cell edge. With best-effort traffic and full buffer assumption the tradeoff between emphasizing the cell center or cell edge can be explored extensively. However, with real-time traffic present, this takes priority without fairness adjustment alternatives. In this paper the mixed traffic scenario is studied with an abstract stochastic Petri net model. The exploration of the degrees of freedom by studying the real-time traffic proportion and a fairness adjustment parameter provides new insight to the potential feasible region. The results show that the tradeoff between emphasizing the cell edge performance and maintaining a high average spectral efficiency is most powerful in the best-effort case, while an increasing level of real-time traffic reduces the room for a tradeoff. The stochastic Petri net analysis approach allows numeric analysis without simulation by utilizing Markov chain equivalence and steady state calculations. This model is deliberately abstract but flexible enough to study the tradeoff.
Year
DOI
Venue
2012
10.1109/VTCFall.2012.6399066
VTC Fall
Keywords
Field
DocType
Long Term Evolution,Markov processes,OFDM modulation,Petri nets,adaptive codes,adaptive modulation,cellular radio,frequency division multiple access,radio spectrum management,radiofrequency interference,scheduling,telecommunication traffic,LTE-advanced range,MAC layer,Markov chain equivalence,OFDMA cellular wireless network,SINR,adaptive modulation and coding,antenna spectral efficiency value,average spectral efficiency,base station,best-effort traffic,buffer assumption,cell center,cell edge performance,cellular network,fairness adjustment parameter,fairness tradeoff,realtime+nonrealtime traffic mix,resource scheduling,signal-to-interference ratio,steady state calculation,stochastic Petri net model
Link adaptation,Wireless network,Markov process,Petri net,Computer science,Markov chain,Computer network,Stochastic Petri net,Cellular network,Spectral efficiency
Conference
ISSN
Citations 
PageRank 
1550-2252
4
0.60
References 
Authors
9
6
Name
Order
Citations
PageRank
Rainer Schoenen114815.03
Akram Bin Sediq210913.47
Halim Yanikomeroglu34413367.42
Gamini Senarath4476.97
Zhijun Chao5244.13
Ho Ting Cheng630517.35