The height of the telecommunications and computer networking technologies have combined at the turn of the century and formed WiMAX, a wireless broadband technology that delivers services in a ubiquitous coverage. The reference points of the WiMAX standard defines how the WiMAX system works, connecting users to services in any kind of networks. Reference point functions provides users with secure high bandwidth communication even under high vehicle velocities while lowering power consumption and cost. This book presents a practical simple implementation of the Access Service Network (ASN) gateway using an embedded environment using the Intel high performance network processor IXP2400, providing the details of implementing tunneling protocols, base station management, and porting mobility functions which define the concepts of the reference points connecting to the ASN gateway.