ABSTRACT
Mobility management is an essential element of wireless communications. It is the key to enabling always-on wireless connectivity to mobile users. With the advance of the next generation of wireless technologies and diff erent network architecture evolution options, the capability to achieve fast and seamless handoff becomes a critical factor in evaluating the success of a new technology and the effi ciency of the network architecture. Th is chapter discusses the possible handoff solutions to new broadband wireless technologies such as WiMAX and 802.20 under diff erent network architectures. Th e key handoff issues, challenges, and architectural options
faced in designing the next-generation wireless broadband mobility system are addressed.
