Title :
Modeling Contention Based Bandwidth Request Scheme for IEEE 802.16 Networks
Author :
He, Jianhua ; Guild, Ken ; Yang, Kun ; Chen, Hsiao-Hwa
Author_Institution :
Univ. of Essex, Colchester
fDate :
8/1/2007 12:00:00 AM
Abstract :
IEEE 802.16 standard specifies a contention based bandwidth request scheme for best-effort and non-real time polling services in point-to-multipoint (PMP) architecture. In this letter we propose an analytical model for the scheme and study how the performances of bandwidth efficiency and channel access delay change with the contention window size, the number of contending subscriber stations, the number of slots allocated for bandwidth request and data transmission. Simulations validate its high accuracy.
Keywords :
WiMax; bandwidth allocation; broadband networks; metropolitan area networks; radio access networks; IEEE 802.16 networks; analytical model; bandwidth efficiency; best-effort polling service; channel access delay; contention based bandwidth request scheme; metropolitan broadband wireless access; nonreal time polling service; point-to-multipoint architecture; Access protocols; Analytical models; Bandwidth; Data communication; Delay; Downlink; Helium; Job shop scheduling; Portable media players; Wireless application protocol;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2007.070477
