CELL UPDATE MESSAGE INDICATING WHETHER USER DATA OR CONTROL DATA IS TRANSMITTED UPLINK, AND RESPECTIVE PROCEDURES FOR HANDLING THESE TWO TYPES OF DATA

摘要

A method of communications in a cellular telecommunications network, comprises the following steps. A cell update message is sent from a user equipment to a network node, the cell update message comprising a cell update cause, the cell update cause comprising one of information indicating user data transmission and information indicating control data transmission, if the cause of the cell update is a uplink data transmission, A first procedure is used for data transmission if said information is user data transmission and a different second procedure is used for data transmission if said information is control data transmission.