TY - GEN
T1 - A framework for femtocells to access both licensed and unlicensed bands
AU - Liu, Feilu
AU - Bala, Erdem
AU - Erkip, Elza
AU - Yang, Rui
PY - 2011
Y1 - 2011
N2 - Cellular operators have been offloading data traffic from their licensed bands to unlicensed bands through a large number of WiFi hotspots over the past years. Although this approach improves the cellular network capacity to some extent, it falls short of getting significant throughput gains. In this paper, it is argued that femtocells, covering a short range, can be a perfect platform to jointly exploit the merits of both licensed and unlicensed frequency bands. In particular, a framework is proposed for a femtocell to simultaneously access both licensed and unlicensed bands. The performance of coexisting femtocell and WiFi networks operating over a fully-utilized unlicensed band are analytically modeled and are verified via simulations. Impact of femtocell channel access parameters on the performance of WiFi and cellular networks is also investigated, shedding light on how a femtocell can best adjust its channel access parameters to coexist with incumbent unlicensed spectrum users like WiFi networks.
AB - Cellular operators have been offloading data traffic from their licensed bands to unlicensed bands through a large number of WiFi hotspots over the past years. Although this approach improves the cellular network capacity to some extent, it falls short of getting significant throughput gains. In this paper, it is argued that femtocells, covering a short range, can be a perfect platform to jointly exploit the merits of both licensed and unlicensed frequency bands. In particular, a framework is proposed for a femtocell to simultaneously access both licensed and unlicensed bands. The performance of coexisting femtocell and WiFi networks operating over a fully-utilized unlicensed band are analytically modeled and are verified via simulations. Impact of femtocell channel access parameters on the performance of WiFi and cellular networks is also investigated, shedding light on how a femtocell can best adjust its channel access parameters to coexist with incumbent unlicensed spectrum users like WiFi networks.
KW - cognitive radio
KW - femtocell
KW - throughput analysis
UR - http://www.scopus.com/inward/record.url?scp=79960597682&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79960597682&partnerID=8YFLogxK
U2 - 10.1109/WIOPT.2011.5930053
DO - 10.1109/WIOPT.2011.5930053
M3 - Conference contribution
AN - SCOPUS:79960597682
SN - 9781612848242
T3 - 2011 International Symposium on Modeling and Optimization of Mobile, Ad Hoc, and Wireless Networks, WiOpt 2011
SP - 407
EP - 411
BT - 2011 International Symposium on Modeling and Optimization of Mobile, Ad Hoc, and Wireless Networks, WiOpt 2011
T2 - 2011 International Symposium of on Modeling and Optimization of Mobile, Ad Hoc, and Wireless Networks, WiOpt 2011
Y2 - 9 May 2011 through 13 May 2011
ER -