TY - GEN
T1 - Improve transmission reliability with multi-AP diversity in wireless networks
T2 - 3rd International Conference on Quality of Service in Heterogeneous Wired/Wireless Networks
AU - Zhu, Yanfeng
AU - Zhang, Qian
AU - Niu, Zhisheng
AU - Zhu, Jing
PY - 2006
Y1 - 2006
N2 - With the increasing development of IEEE 802.11 based Wireless Local Area Network (WLAN) devices, large-scale WLANs with high dense deployment of user terminals and access points (APs) have emerged widely in various hotspots. Enhancing transmission reliability has been a primary challenge for scaling the WLANs because high dense deployment of user terminals and APs results in too many collisions. In this paper, we investigate the defects of single association mechanism defined in IEEE 802.11 on transmission reliability from network perspective. Then, we propose a multi-AP architecture, with which an AP Controller (AC) is employed to enable each user terminal to associate and cooperate with multiple APs. In this way, the user terminals can benefit from the diversity effect of multi-paths with independent collisions and transmission errors. This paper concentrates on the performance comparison between the proposed multi-AP architecture and that in IEEE 802.11 standard. Extensive simulation results show that the proposed mechanism can obtain much better performance in terms of the throughput per user and the total throughput, and the performance gain is position dependent. Moreover, the unfairness issue in traditional WLANs due to capture effect can be alleviated properly in the multi-AP framework.
AB - With the increasing development of IEEE 802.11 based Wireless Local Area Network (WLAN) devices, large-scale WLANs with high dense deployment of user terminals and access points (APs) have emerged widely in various hotspots. Enhancing transmission reliability has been a primary challenge for scaling the WLANs because high dense deployment of user terminals and APs results in too many collisions. In this paper, we investigate the defects of single association mechanism defined in IEEE 802.11 on transmission reliability from network perspective. Then, we propose a multi-AP architecture, with which an AP Controller (AC) is employed to enable each user terminal to associate and cooperate with multiple APs. In this way, the user terminals can benefit from the diversity effect of multi-paths with independent collisions and transmission errors. This paper concentrates on the performance comparison between the proposed multi-AP architecture and that in IEEE 802.11 standard. Extensive simulation results show that the proposed mechanism can obtain much better performance in terms of the throughput per user and the total throughput, and the performance gain is position dependent. Moreover, the unfairness issue in traditional WLANs due to capture effect can be alleviated properly in the multi-AP framework.
UR - https://openalex.org/W2006322199
UR - https://www.scopus.com/pages/publications/34547652732
U2 - 10.1145/1185373.1185418
DO - 10.1145/1185373.1185418
M3 - Conference Paper published in a book
SN - 1595935371
SN - 9781595935373
T3 - ACM International Conference Proceeding Series
BT - ACM International Conference Proceeding Series - Proceedings of the 3rd International Conference on Quality of Service in Heterogeneous Wired/Wireless Networks
Y2 - 7 August 2006 through 8 September 2006
ER -