This book addresses the challenges of providing Internet services to a mobile environment and thoroughly examines the cutting-edge technologies designed to meet them. Eminent contributors explain the mobile and wireless network technologies that make mobile connectivity possible, including their characteristics, advantages, and disadvantages. Much of the book focuses on the mobility management techniques necessary when the point of network attachment can change constantly. Macro-mobility and micro-mobility management protocols receive extensive attention, as do security concerns. Other key topics include interworking between WLAN and cellular networks, Internet access over WLANs, over GPRS and over satellites, multicasting, quality-of-service provisions, header compression schemes, and the problems of video streaming over wireless IP networks.