Wireless Broadband Integrated Services with Asynchronous Transfer Mode Network Protocol for Digital Networking

摘要

A networking protocol for a wireless point (ACCESS NODE END) versus a multipoint (SUBSCRIBER END): the user SUBSCRIBER END is time-divided into a downstream direction (DOWNSTREAM RF) from a base station (ACCESS NODE END) Utilize multiplexing and in a upstream direction (UPSTREAM RF) from the user to a base station (ACCESS NODE END), utilizing time-division multiple access; The medium access control actively assigns time slots in the upstream direction to accommodate variable demand for bandwidth by multiple users; The upstream frame timing being synchronized with the downstream frame timing; A time slot transmits an individual ATM cell; The upstream time slot synchronization is a network protocol that is maintained within +2 modulation symbols.