METHOD AND APPARATUS FOR REDUCING UPLINK AND DOWNLINK TRANSMISSION ERRORS IN A THIRD GENERATION CELLULAR SYSTEM

摘要

A METHOD AND APPARATUS FOR SUPPORTING ADAPTIVE MODULATION AND CODING (AM&C) AND HYBRID AUTOMATIC REPEAT REQUEST (H-ARQ) FUNCTIONS IN A CELLULAR SYSTEM INCLUDING AT LEAST ONE WIRELESS TRANSMIT/RECEIVE UNIT (WTRU) AND A NODE B. A SIGNAL IS RECEIVED AT THE WTRU INDICATING A NEED FOR AM&C AND H-ARQ CONTROL SIGNALING. AN AM&C AND H-ARQ CONTROL SIGNALING TRANSPORT CHANNEL (TRCH) IS DYNAMICALLY ALLOCATED BY INFORMING A TRANSPORT FORMAT SELECTION PROCESS OF THE NEED FOR AM&C AND H-ARQ CONTROL SIGNALING. THE TRANSPORT FORMAT IS SELECTED FOR REQUIRED TRANSMISSION TIME INTERVALS (TTIS) WHICH ASSIGN TRANSPORT FORMAT COMBINATIONS (TFCS) TO ESTABLISH THE AM&C AND H-ARQ CONTROL SIGNALING TRANSPORT CHANNEL. (FIGURE 6)