| 摘要 |
<p>An uplink synchronization method, a base station and a user equipment are disclosed in the present invention. The uplink synchronization method includes: transmitting a random access preamble to a base station on a first component carrier; receiving a contention resolution message or a connection reestablishment message of radio resource control protocol, at the same time, acquiring uplink bandwidth allocation information; according to the indication of said uplink bandwidth allocation information, determining a component carrier needed to be performed synchronization by a user equipment and the bandwidth resource corresponding to said component carrier, wherein the bandwidth resource corresponding to said component carrier is used for the user equipment to transmit a random access preamble on said component carrier; transmitting a random access preamble to the base station on the bandwidth resource corresponding to said component carrier; receiving a timing advance command from the base station, and according to the indication of said timing advance command, acquiring the timing advance value on said component carrier. A corresponding base station and a user equipment are also disclosed in the present invention. Using the above solution can save resources as much as possible, and at the same time, reduce the time delay of uplink synchronization in the user equipment.</p> |
