TY - GEN
T1 - Efficient allocation of CQI channels in broadband wireless networks
AU - Cohen, Reuven
AU - Grebla, Guy
PY - 2011
Y1 - 2011
N2 - In an OFDMA network, the modulation and coding scheme (MCS) of the messages sent to the mobile stations (MSs) varies according to channel condition. To determine the appropriate MCS level, the base station (BS) allocates to every active MS a CQI (Channel Quality Information) channel. The CQI bandwidth is a scarce resource whose allocation must be adjusted to the actual needs of the MSs. However, allocations and deallocations of CQI channels require expensive signaling messages between the BS and the MSs, and therefore should be minimized. In this paper we propose a framework for the management of the CQI bandwidth by the BS. We identify three related optimization problems and propose efficient algorithms for solving them.
AB - In an OFDMA network, the modulation and coding scheme (MCS) of the messages sent to the mobile stations (MSs) varies according to channel condition. To determine the appropriate MCS level, the base station (BS) allocates to every active MS a CQI (Channel Quality Information) channel. The CQI bandwidth is a scarce resource whose allocation must be adjusted to the actual needs of the MSs. However, allocations and deallocations of CQI channels require expensive signaling messages between the BS and the MSs, and therefore should be minimized. In this paper we propose a framework for the management of the CQI bandwidth by the BS. We identify three related optimization problems and propose efficient algorithms for solving them.
UR - http://www.scopus.com/inward/record.url?scp=79960874368&partnerID=8YFLogxK
U2 - 10.1109/INFCOM.2011.5935325
DO - 10.1109/INFCOM.2011.5935325
M3 - ???researchoutput.researchoutputtypes.contributiontobookanthology.conference???
SN - 9781424499212
T3 - Proceedings - IEEE INFOCOM
SP - 96
EP - 100
BT - 2011 Proceedings IEEE INFOCOM
T2 - IEEE INFOCOM 2011
Y2 - 10 April 2011 through 15 April 2011
ER -