標題: On Efficient Multipolling with Various Service Intervals for IEEE 802.11e WLANs
作者: Chou, Chin-Wen
Lin, Kate Ching-Ju
Lee, Tsern-Huei
電信工程研究所
Institute of Communications Engineering
關鍵字: Multipoll;QoS;802.11e
公開日期: 2011
摘要: Hybrid coordination function (HCF) is proposed in IEEE 802.11e standard to support quality of service (QoS). HCF defines two channel access mechanisms; one of them is HCF controlled channel access (HCCA) designed for contention free transmission. In HCCA, each QoS-enhanced station (QSTA) obtains polled transmission opportunity (TXOP) from the hybrid coordinator (HC), which is in charge of scheduling the channel access and responding the poll messages to each QSTA. However, forwarding polling messages causes a significant overhead and degrades the channel utilization of data transmission. The goal of this work is to develop an efficient multipolling scheme that can reduce the overhead of polling messages. The simulation results show that the proposed algorithm can reduce the control overhead and, thus, improve the channel utilization significantly.
URI: http://hdl.handle.net/11536/134788
ISBN: 978-1-4244-9537-5
ISSN: 2376-6492
期刊: 2011 7TH INTERNATIONAL WIRELESS COMMUNICATIONS AND MOBILE COMPUTING CONFERENCE (IWCMC)
起始頁: 1906
結束頁: 1911
Appears in Collections:Conferences Paper