Efficient allocation of CQI channels in broadband wireless networks

Reuven Cohen, Guy Grebla

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Scopus citations


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.

Original languageEnglish
Title of host publication2011 Proceedings IEEE INFOCOM
Number of pages5
StatePublished - 2011
Externally publishedYes
EventIEEE INFOCOM 2011 - Shanghai, China
Duration: 10 Apr 201115 Apr 2011

Publication series

NameProceedings - IEEE INFOCOM
ISSN (Print)0743-166X


ConferenceIEEE INFOCOM 2011


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