METHODS AND APPARATUSES FOR PROCESSING MEASUREMENT GAPS IN A WIRELESS COMMUNICATION SYSTEM

A method for processing a measurement gap is disclosed. An embodiment of the method includes receiving a radio resource control (RRC) assignment on a downlink for a measurement gap for tuning from a source carrier frequency to a target carrier frequency; determining a scheduling conflict arising from physical downlink control channel (PDCCH) occurring before the measurement gap; and performing a medium access control (MAC) process in accordance with a protocol predefined for the scheduling conflict by, canceling uplink shared channel (UL-SCH) first transmission or retransmission. Measurement Gap Scheduling Serving Base Measured Base / Station (e.g., Station (e.g., eNB) 102 eNB) 08 Downlink Measurement (DL) 105 Gap Enabling 116 128 * 130 Communication 110 Uplink (UL) 114 Measurement Gap Processing User Equipment - (UE) 10 ( Processing Measurement Gaps 1_2 eNB Assigning/UE Receiving RRC Assigned Measurement Gap (MG) on DL 122 eNB Enabling/UE Determining Scheduling Conflict For MG eNB Enabling/UE Performing MAC Process In Accordance With Predefined Protocol for MG Conflict 1261