TY - GEN
T1 - Service differentiation for the bandwidth request scheme in fixed IEEE 802.16 networks
AU - Chen, Kai
AU - Zhou, Yi
AU - He, Jianhua
AU - Tang, Zuoyin
PY - 2008/6/3
Y1 - 2008/6/3
N2 - IEEE 802.16 standards have been developed as one of the technical solutions for broadband wireless access systems. It has high data rate, large network coverage, flexible QoS schemes and cheap network deployment. Various flexible mechanisms related to QoS provisioning have been specified for uplink traffic at the medium access control (MAC) layer in the standards. Among the mechanisms, contention based bandwidth request scheme can be used to indicate bandwidth demands to the base station for the non-real-time polling and besteffort services. These two services are used for most application with unknown traffic characteristics. Due to the diverse QoS requirements of those applications, service differentiation (SD) is anticipated over the contention based bandwidth request scheme. In this paper we investigate the SD with the bandwidth request scheme by means of assigning different channel access parameters and bandwidth allocation priorities. The effectiveness of the differentiation schemes are evaluated by simulations. It is observed that the initial backoff window can be efficient in SD, and if combined with the bandwidth allocation priority, the SD performances will be better.
AB - IEEE 802.16 standards have been developed as one of the technical solutions for broadband wireless access systems. It has high data rate, large network coverage, flexible QoS schemes and cheap network deployment. Various flexible mechanisms related to QoS provisioning have been specified for uplink traffic at the medium access control (MAC) layer in the standards. Among the mechanisms, contention based bandwidth request scheme can be used to indicate bandwidth demands to the base station for the non-real-time polling and besteffort services. These two services are used for most application with unknown traffic characteristics. Due to the diverse QoS requirements of those applications, service differentiation (SD) is anticipated over the contention based bandwidth request scheme. In this paper we investigate the SD with the bandwidth request scheme by means of assigning different channel access parameters and bandwidth allocation priorities. The effectiveness of the differentiation schemes are evaluated by simulations. It is observed that the initial backoff window can be efficient in SD, and if combined with the bandwidth allocation priority, the SD performances will be better.
KW - IEEE 802.16
KW - MAC
KW - Random channel access
KW - Service differentiation
KW - WiMAX
UR - http://www.scopus.com/inward/record.url?scp=50649103970&partnerID=8YFLogxK
U2 - 10.1109/ICCSC.2008.157
DO - 10.1109/ICCSC.2008.157
M3 - Conference contribution
AN - SCOPUS:50649103970
SN - 9781424417087
T3 - 2008 4th IEEE International Conference on Circuits and Systems for Communications, ICCSC
SP - 718
EP - 722
BT - 2008 4th IEEE International Conference on Circuits and Systems for Communications, ICCSC
T2 - 2008 4th IEEE International Conference on Circuits and Systems for Communications, ICCSC
Y2 - 26 May 2008 through 28 May 2008
ER -