K. Schneider, D. Turgut, and M. Chatterjee. An experimental study on Layer 2 roaming for 802.11 based WLANs. In Proceedings of IEEE Workshop on advanced EXPerimental activities ON WIRELESS networks and systems (EXPONWIRELESS), pp. 1–6, June 2007.
In this paper, we argue that the roaming functionalities implemented at the data link layer (Layer 2) have certain drawbacks causing delay in the handoff process for mobile hosts in a wireless local area network. Through real experiments, we show how the triggering of the roam process is delayed which affects data transmission. Even though the network interface cards and drivers were from different manufactures, the decision process related to the handoffs had significant similarities the use of a crude timer and an un-sophisticated approach for detecting error conditions. Identifying the mechanisms that cause a mobile host to roam, we suggest a pro-active algorithm that eases the effects of waiting too long to roam. By monitoring the current received signal strength, we were able to initiate the probing process early enough which in turn helped the roaming process.
@inproceedings{Schneider-2007-EXPONWIRELESS,
author = "K. Schneider and D. Turgut and M. Chatterjee",
title = "An experimental study on Layer 2 roaming for 802.11 based WLANs",
booktitle = "Proceedings of IEEE Workshop on advanced EXPerimental
activities ON WIRELESS networks and systems (EXPONWIRELESS)",
month = "June",
pages = "1-6",
year = "2007",
abstract = {
In this paper, we argue that the roaming functionalities implemented at
the data link layer (Layer 2) have certain drawbacks causing delay in the
handoff process for mobile hosts in a wireless local area network.
Through real experiments, we show how the triggering of the roam process
is delayed which affects data transmission. Even though the network
interface cards and drivers were from different manufactures, the
decision process related to the handoffs had significant similarities the use of a crude timer and an un-sophisticated approach for detecting
error conditions. Identifying the mechanisms that cause a mobile host to
roam, we suggest a pro-active algorithm that eases the effects of waiting
too long to roam. By monitoring the current received signal strength, we
were able to initiate the probing process early enough which in turn
helped the roaming process.
},
}
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