CHANGE OF PRIMARY CELL DURING CARRIER AGGREGATION

摘要

Methods for performing change of primary cell during carrier aggregation operation are described. A mobile station (MS) receives a message to change a primary cell and to perform a random access communication with a new primary cell. The MS receives a downlink transmission subsequent to receiving the message indicating a change of primary cell, wherein the downlink transmission requires the transmission of uplink control information by the mobile station. The MS transmits, subsequent to receiving the random access response, on an uplink control channel to the new primary cell in response to receiving the downlink transmission.