Title :
Experimental study of mismatching ESS-subnet handoffs on IP over IEEE 802.11 WLANs
Author :
Yen, Li-Hsing ; Chang, Hung-Hsin ; Tsao, Shiao-Li ; Hung, Chia-Chi ; Tseng, Chien-Chao
Author_Institution :
Dept. of Comput. Sci. & Inf. Eng., Nat. Univ. of Kaohsiung, Kaohsiung, Taiwan
Abstract :
To support delay-sensitive applications on IP over wireless LAN (WLAN), both layer-2 handoff (L2H) and layer-3 handoff (L3H) must be conducted efficiently. Prior studies toward a fast L2H/L3H assume simple networking environments where Extended Service Set (ESS) exactly matches subnets. This paper identifies performance issues associated with inter-ESS L2Hs and L3Hs under mismatching ESS-subnet configurations, and analyzes actual performance impact on existing systems. Experimental results show that inter-ESS L2Hs are much time expensive than intra-ESS L2Hs while mismatching ESS-subnet settings lead to either time-consuming L3H detections or redundant L3H executions. We also discuss possible remedies for this problem.
Keywords :
IEEE standards; IP networks; computer network management; wireless LAN; IEEE 802.11 WLAN; IP over wireless LAN; extended service set; layer-2 handoff; layer-3 handoff; mismatching ESS-subnet handoffs; wireless local area network; Authentication; Delay; IEEE 802.11 Standards; IP networks; Mobile communication; Probes; Wireless LAN;
Conference_Titel :
Wireless and Optical Communications Networks (WOCN), 2011 Eighth International Conference on
Conference_Location :
Paris
Print_ISBN :
978-1-4577-0262-4
DOI :
10.1109/WOCN.2011.5872938
