Video transport over wireless Local Area Networks (LANs) usually suffers from signal fading, noise interference, and network congestion, leading to time-varying packet loss rate and fluctuating effective bandwidth. We propose in this paper an adaptive error control scheme to adaptively insert error-resilience features into a compressed video in the media gateway which serves roaming clients. Ou...

We discuss the idea of ambient networking and describe our contribution to this field on providing quality of service in 802.11b wireless LANs, service discovery, and personal communication environments.

We present a new compact, power-efficient, and scalable VLSI array for the first Lempel-Ziv algorithm to be used in high-speed wireless data communication systems. This is part of a project at the University of Massachusetts to develop reliable and secure high-speed wireless LANs by exploiting novel VLSI technology, communications algorithms and network protocols. For wireless LANs to be seamle...

One challenge in the development of telecommunication networks is the seamless integration of wireless devices into the global Internet. Although it is well known that a wireless end-system suffers from the characteristics of the wireless link systematic measurements are still missing. In this paper we present results of a systematic measurement of TCP performance over wireless LANs. In this me...

This paper discusses the various standards that have come up in the area of Wireless Networks in the last few years. First I talk about the IEEE standard and after that I move on to other standards namely., IrDA, Bluetooth, SWAP, WAP and OpticAir. OpticAir technology just came out in 1999 and has huge bandwidth advantage over the other competing technologies. See Also: Wireless Data Networking ...

A new capture effect, ‘neighborhood capture’, is described, which arises when Ethernet-type protocols are employed in multiple-cell wireless local area networks (WLANs) that re-use RF channels. Given the small number of channels available, co-channel cells cannot all transmit simultaneously without causing interference on one another. A carrier-sense contention-based MAC protocol can allocate c...

IEEE 802.11 power saving mode (PSM) has been proposed in wireless LANs and multi-hop wireless networks to coordinate power states of wireless devices. In IEEE 802.11 PSM, power management decisions to wake up wireless devices or put them to sleep states are made periodically in every beacon interval. In this paper, we demonstrate via a rigorous, analytical model (the result of which is corrobor...

In this paper, we propose the Ad-hoc CEllular NETwork (ACENET), a heterogeneous wireless network architecture for 3.5 generation (3.5G) and fourth-generation (4G) mobile systems. We propose an IP-based integrated wireless routing scheme for the integration of heterogeneous wireless networking technologies in 3.5G and 4G ACENET. We also propose an integrated wireless MAC scheme for 4G ACENET. AC...