Next Generation wireless networks promise its users a pervasive connectivity. Mobility management for continuity of ongoing services with adequate performance plays a vital role. Vertical handoff decision is an indispensable constituent of mobility management. User centric vertical handoff decision strategies that maximize user satisfaction, with no compromise on performance, is the work taken up in this book for an in-depth study. The significance of the work presented in this textbook rests in the simple fact that maximizing user satisfaction is fundamental for the success and growth of next generation communications industry. The readers will have an opportunity to look at the panorama of various strategies while advancing through the pages of the book. We encourage every student of computers and communications engineering to pick up a copy of this book, read and research on the ideas presented for contributing to the creation of a human centric world.