.com). In June 2003, the Multiband OFDM Alliance SIG (MBOA-SIG) was formed to support the development of the best possible technical solution for the emerging UWB (IEEE 802.15.3a) PHY specification for a diverse set of wireless applications. Today, the WiMedia Alliance represents a combination of the original WiMedia Alliance and the MBOA-SIG, the two leading organizations creating UWB industry specifications and certification programs for PC, consumer electronic, mobile, and automotive applications. The combined WiMedia Alliance is an open industry association that defines the WiMedia/MBOA technology. Alliance members consist of industry leaders based in Asia, Europe, and North America. WiMedia defines a UWB common radio platform that enables high speeds (480Mbps and beyond), low power consumption, and multimedia data transfers in a WPAN. It is optimized for several key market segments, including PC, consumer electronic, mobile, and automotive applications. The platform incorporates MAC- layer and PHY-layer specifications based on Multiband OFDM (MB-OFDM). ECMA-368 and ECMA-369 are international ISO-based specifications for the WiMedia UWB common radio platform (see www.ecma-international.org). WiMedia now includes the MBOA UWB technologies that will permit the long battery life that is key for mobile applications. The Wireless USB Promoter Group (www.usb.org/developers/wusb) has endorsed WiMedia as a common plat- form for its next-generation wireless implementations. The 1394 Trade Associa- tion (TA) Wireless Working Group (www.1394ta.org) has approved WiMedia's MAC Convergence Architecture (WiMCA) as a platform for a high-speed wireless IEEE 1394 (FireWire) protocol adaptation layer (PAL) development. The 1394 TA also said it will collaborate with the WiMedia Alliance to develop interoperability Chapter 15 WMANs, WLANs, and WPANs test specifications and certification programs for wireless IEEE 1394. WiMedia also plans to develop universal IP addressing protocols in alignment with organi- zations such as the UP