RÉDUCTION DE PUISSANCE EN DEUX PHASES POUR PROCÉDURE D'ACCÈS DANS DES SYSTÈMES DE COMMUNICATION SANS FIL

摘要

A two-phase backoff mechanism for LTE access procedure is proposed where backoff handling is applied differently in two separate phases. During the first phase, network-controlled reattempts involves adaptation to radio conditions. Reattempts due to collisions, ramping of power and other robustness parameters needed to compensate for unpredictable conditions can be handled in the first phase. During the second phase, UE-controlled reattempts continues for other conditions. UE can reattempt at a lesser rate to alleviate the worsening of the load and interference situation. As a result, backoff handling is optimized towards LTE access procedures.