However, 802.11 was not originally designed with roaming capabilities and can not, in the "pure" form, support for seamless roaming between different hotspots and other 802.11 access points. This book details the theory behind various 802.11 extensions to permit roaming and describes how this expansion can be successfully implemented in 802.11 WLANs. * Offers a comprehensive treatise on the 802.11 Wi-Fi roaming with a compare / contrast to the theory and technique of mobile roaming * Appears as a source of "one stop" for the design engineer is charged with meeting the needs of the market for 802.11 devices seamless roaming capability * Build on the basis of knowledge of professional audiences without digging a long discussion of the theory of old master