摘要 |
The present invention proposes a method, in an eNB in wireless communication network based on carrier aggregation (CA) transmission, for controlling random access performed by UE, wherein the method comprises: determining whether the UE is out of UL sync on all cells, wherein the cells comprises Pcell and Scell: sending Physical Downlink Control Channel (PD-CCH) order signaling if the UE is out of UL sync on all the cells, wherein the PDCCH order signaling is used to indicating the UE to perform random access. A method, in a mobile station in wireless communication network based on carrier aggregation (CA) transmission, for random access, wherein the mobile station is configured a Pcell and at least one Scell, and the method comprises: determining whether random access is needed on at least one cell of the cells, wherein the cells comprises the Pcell and the at least one Scell; performing random access on at least one cell of all the cells, if it is determined that random access is needed on at least one cell of the cells. |