A queueing model for HTTP traffic over IEEE 802.11 WLANs

A queueing model for HTTP traffic over IEEE 802.11 WLANs

We consider an IEEE 802.11 based wireless LAN where an access point is used to connect a fixed number of users to the Web or to a shared file system. Users alternate between activity periods (corresponding to the download of a file) and idle periods (corresponding to think times). We first consider the interaction of TCP with the IEEE 802.11 MAC protocol, and get approximate expressions for the...

FastScan: a handoff scheme for voice over IEEE 802.11 WLANs

IEEE 802.11 Wireless LANs are increasingly being used in enterprise environments for broadband access. Such large scale IEEE 802.11 WLAN deployments implies the need for client mobility support; a mobile station has to be “handed off” from one Access Point to another. Seamless handoff is possible for data traffic, which is not affected much by the handoff delay. However, voice traffic has strin...

An Analytical Model for IEEE 802.11e WLANs under Unsaturated Traffic Conditions

Contention Free Bursting (CFB) is a new Quality-ofService (QoS) scheme proposed in IEEE 802.11e standard. It reduces the contention overheads by allowing a station gains the channel to transmit multiple frames back-to-back in a burst. Existing analytical models of the CFB scheme have primarily been presented under the assumption of saturated traffic loads. In this paper, we develop a comprehens...

On The Effect of Feedback Traffic in IEEE 802.11b WLANs

Supporting voice and video applications over IEEE 802.11n WLANs

In this paper, an analytical model is developed for the performance study of an IEEE 802.11n wireless local area network (WLAN) supporting voice and video services, considering the new features of the medium access control (MAC) protocol proposed in IEEE 802.11n, i.e., frame aggregation and bidirectional transmission. We show that these enhanced MAC mechanisms can effectively improve the networ...