The growing popularity of wireless LANs has spurred rapid evolution in physical-layer technologies and wide deployment in diverse environments. The ability of protocols in wireless data networks to cater to a large number of users, equipped with high-speed wireless devices, becomes ever critical. In this paper, we propose a token-coordinated random access MAC (TMAC) framework that scales to var...

Although local area networks (LANs) are commonplace in hospital-based radiology departments today, wireless LANs are still relatively unknown and untried. A linked wireless reporting system was developed to improve work throughput and efficiency. It allows radiologists, physicians, and technologists to review current radiology reports and images and instantly compare them with reports and image...

Among the latest events of the wireless revolution, the fast-growing of ZigBee as a standard for WSN (Wireless Sensors Networks) is certainly one of these. ZigBee and 802.15.4 had been proving in the last years that they can achieve the results that Wi-Fi had achieved for high bit-rate wireless LANs and some large reliable deployments are now in place implementing ad-hoc WSN in critical applica...

Wireless LANs are becoming more widespread because of the rapid advance of wireless technologies and mobile computers. In this paper, we present the design and implementation of a system to help mobile users to select the most competent AP. By monitoring the network traffic of APs within the local LAN in real time, this system offers the mobile user the network utilizations, locations, and sign...

The routing protocols meant for wired networks can not be used for mobile ad hoc networks because of the mobility of networks. The ad hoc routing protocols can be divided into two classes :table-driven and on-demand. This paper discusses routing protocols belonging to each category. See Also: TCP Extensions for Wireless Networks | Evolution Toward Third Generation Wireless Networks | In-buildin...

Workstation-class computers have lately become small enough to carry, and portable computers have become by far the fastest growing segment of the computer industry. In addition, there is much activity in 1 the telecommunications industry aimed at providing wireless data networks which would lie at the fringes of a universal infrastructure of high speed WANs and LANs, providing the ‘‘last link’...

The recent widespread deployment of wireless LAN technology raises the question of how a mobile telephony system might instead be architected to use wireless LAN access points and the Internet to achieve similar services. In this paper, we examine an end-to-end architecture for mobile telephony, with a strong focus on endpoint issues. We have designed, implemented, and have experience using dev...

Wireless LANs (IEEE 802.11) are increasingly used in industrial applications. They reduce cabling costs, increase flexibility and enable mobile applications for maintenance or logistics tasks. Mesh networks provide a self-configuring and -healing wireless backbone for large scale deployments (e.g. in process automation). This paper presents a routing algorithm which provides QoS in wireless mes...

This paper presents Trantor, an architecture for extensible wireless LANs. Trantor enables rapid innovation by removing standardization from the path of introducing new technologies. This is achieved largely by moving the intelligence away from wireless clients and into the infrastructure. In addition to providing extensibility, this approach can also help improve overall network performance th...

This paper focuses on the integration of Internet and Wireless LANs (WLANs) and proposes a novel technique that supports seamless and efficient integration. This technique is based on a generic adaptation layer, referred to as Wireless Adaptation Layer (WAL), which is introduced between the IP layer and the WLAN Link Layer. WAL is designed to (i) dynamically cope with the wireless channel impai...