Patent ID: 6188697
Filing Date: 2001-02-13
Classification: H04L,H04Q

Abstract:
An asynchronous transfer mode (""ATM"") cell transport system in a wireless communication system, comprising:a transmitter for transmitting cells; anda receiver for receiving cells classified into quality classes according to transmission quality requirements;wherein the transmitter comprises:a transmission cell demultiplexer to distribute cells according to their quality class;transmission buffers each of which distinguishes and stores cells that have been distributed by the transmission cell demultiplexer; anda transmission buffer read controller which reads cells stored in the transmission buffers starting from cells with a high priority as determined by the quality class thereof; and wherein the receiver comprises:receiving buffers which store received cells; anda receiving buffer read controller which reads cells from the receiving buffers starting from cells with the high priority;wherein:the transmitter has a time stamp counter and a time stamp attacher which attaches the arrival time of a cell to that cell as a time stamp according to the output of the time stamp counter;the receiver has a time stamp counter which generates the same timing as the time stamp counter of the transmitter, and a time stamp detector for detecting the time stamps of cells stored in the receiving buffers; andthe receiving buffer read controller has a reading element which reads cells stored in the receiving buffers according to the time stamps on the basis of the time stamp counter of the receiver.