Robust cross layer optimization in relay aided cellular networks

TY - JOUR

T1 - Robust cross layer optimization in relay aided cellular networks

AU - Quintas, Diogo

AU - Friderikos, Vasilis

PY - 2013/8

Y1 - 2013/8

N2 - A robust optimization framework for cross layer optimization is proposed to deal with time varying channels, reducing the required channel state feedback overhead and giving strong QoS guarantees. Lower bounds for the achieved goodput when robust scheduling is used are derived and through simulation we study the impact in terms of blocked calls and QoS achieved by the robust solution for two different cell topology layouts: when 2-hop relaying is allowed and when only direct base station to user transmissions are allowed. The results reveal that the price of robustness is lower for the 2-hop case than the single hop case.

AB - A robust optimization framework for cross layer optimization is proposed to deal with time varying channels, reducing the required channel state feedback overhead and giving strong QoS guarantees. Lower bounds for the achieved goodput when robust scheduling is used are derived and through simulation we study the impact in terms of blocked calls and QoS achieved by the robust solution for two different cell topology layouts: when 2-hop relaying is allowed and when only direct base station to user transmissions are allowed. The results reveal that the price of robustness is lower for the 2-hop case than the single hop case.

KW - Cellular networks

KW - Price of robustness

KW - Relay networks

KW - Robust optimization

KW - Scheduling

UR - http://www.scopus.com/inward/record.url?scp=84880271755&partnerID=8YFLogxK

U2 - 10.1007/s11276-012-0538-9

DO - 10.1007/s11276-012-0538-9

M3 - Article

AN - SCOPUS:84880271755

SN - 1022-0038

VL - 19

SP - 1361

EP - 1373

JO - WIRELESS NETWORKS

JF - WIRELESS NETWORKS

IS - 6

ER -