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. 1 00-' Measurement Gap Scheduling 10 Serving Base Measured Base // Station (e.g., Station (e.g., eNB) 108 Downlink Measurement (DL) 10Gap Enabling 16 128 130 Communication 110 Uplink (UL) 114 Measurement Gap Processing User Equipment 118 (UE) 106 Processing Measurement Gaps 120 ) 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 126