SWAN : An Indoor Wireless ATM

1 SWAN: An Indoor Wireless ATM Network E. Hyden, J. Trotter, P. Krzyzanowski, M. Srivastava and P. Agrawal AT&T Bell Laboratories 600 Mountain Avenue Murray Hill, NJ 07974 feah,trotter,paul,mbs,[email protected] Abstract| The SWAN1 project investigates architectural aspects of networks containing mobile hosts. The network model includes base stations connected via a wired, ATM infrastructure and a wireless, ATM last hop to a number of mobile hosts, ranging in computational and functional abilities from personal digital assistants to notebook computers. The FAWN2 network interface card was developed as part of the implementation of a small SWAN network. It provides wireless, ATM channels using o -the-shelf FHSS modems which operate in the 2.4 GHz industrial, scienti c and medical band, and use a sequence of radio channels of 1 MHz bandwidth to provide up to 625 kb/S raw bit rate. The rst phase of the implementation has been completed and provides basic wireless ATM connectivity. This paper presents an overview of the SWAN network, followed by a description of the implementation which has been built to validate our initial architectural design. Keywords| Wireless Networks, Asynchronous Transfer Mode, Mobile Computing.