초록

A system for the delivery of wireless broadband integrated services digital network (ISDN) using asynchronous transfer mode (ATM).

대표청구항 ▼

[ What is claimed is:] [1.] A system for the delivery of wireless broadband integrated services digital network (ISDN) using asynchronous transfer mode (ATM), there being at least one base station and multiple user stations, comprising:said at least one base station has time division multiplexing (T

[ What is claimed is:] [1.] A system for the delivery of wireless broadband integrated services digital network (ISDN) using asynchronous transfer mode (ATM), there being at least one base station and multiple user stations, comprising:said at least one base station has time division multiplexing (TDM) means for transmissions from said base station to said user stations, each of said user station includes means for communication with said base station on a time division multiple access (TDMA) basis,control means for controlling access and actively assigning time slots to said user stations for access in said TMDA system, said base station having frame timing signal means and each said user station having user frame timing means and means to synchronize said user frame time slot timing means with said base station frame timing signal means,each frame having time slots therein with each time slot carrying individual asynchronous transfer mode (ATM) cells and wherein the first time slot of frame timing signals from said base station includes a frame start ATM cell,means at said user stations for maintaining said frame time slot synchronization to within plus or minus (.+-.) two modulation symbols, andwherein certain ones of said time slots in the frame from said base station to said user include random access time slots which are used for control plane requests by users entering the network and users in standby mode seeking to begin a session, and polling is used for management plane functions and responses by users on a polling response time slot.