 starting from the reception of handover command. If the UE is configured with scheduled resource allocation in the handover command, then it continues to use the exceptional transmission resource pool while the timer associated with the hand- over is running. If the UE is configured with autonomous resource selection in the target cell, it continues to use the exceptional transmission resource pool until the sensing results on the transmission resource pools for autonomous resource selection are available. For exceptional cases (e.g., during radio link failure, during transition from RRC_IDLE to RRC_CONNECTED, or during change of dedicated V2X sidelink resource pools within a cell), the UE may select and temporarily use resources in the exceptional pool provided in serving cell's SIB21 message or in dedicated signaling based on random selection. During Vehicle-to-Everything (V2X) Communications 835 cell reselection, the RRC_IDLE UE may use the randomly selected resources from the exceptional transmission resource pool of the reselected cell until the sensing results on the transmission resource pools for autonomous resource selection are available [6]. To avoid interruption in receiving V2X messages due to delay in acquiring reception resource pools broadcast from the target cell, synchronization configuration and reception resource pool configuration for the target cell can be signaled to RRC_CONNECTED UEs in the handover command. For RRC_IDLE UE, it is up to UE implementation to minimize V2X sidelink transmission/reception interruption time associated with acquisition of SIB21 message of the target cell. A UE is considered in-coverage on the carrier used for V2X sidelink communication, when- ever it detects a cell on that carrier. If the UE that is authorized for V2X sidelink communi- cation is in-coverage on the frequency used for V2X sidelink communication or if the eNB provides V2X sidelink configuration for that frequency (including the case where the UE is out-of-coverage on that frequency), the UE uses t