Wireless LAN (WLAN or also known as Wi-Fi) is a high speed data networking technology that is being widely deployed in residential, enterprise and public areas all around the world. Wi-Fi brings the Internet to users with mobile computers and/or PDAs and soon even cell phones regardless of where they are—home, corporate campus, or a public hotspot.

However there are many people today who cannot take full advantage of WLAN connectivity because of differences in connection interfaces, security provisioning and authentication methods in private and public network deployments.

This paper describes the market environment and the challenges for deployments in enterprises and public hotspots. It is intended for enterprise IT managers, public WLAN operators and WLAN equipment and software vendors who are involved in planning, deploying or supporting WLAN networks.

The paper addresses key interoperability issues including best practices for Authentication, Authorization and Accounting (AAA), one bill roaming and mobility management. It goes on to provide architectural tenets and guidelines for WLAN network planning and deployments in the focus areas listed above; however deployments in the home are addressed by other industry groups such as the Digital Home Working Group.