| 摘要 |
Method and apparatus for random access are provided. A base station sends access control information to a UE. The access control information includes an identifier of the UE and an access control command. The UE obtains an access time slot and a preamble signature according to the access control information received from the bases station. Then the UE initiate, according to the access time slot and the preamble signature, a random access procedure with a preamble power ramping. With the embodiments of the present invention, time delay in random access procedures may be decreased so as to enable the UE to complete the uplink access as quickly as possible and provide a feedback for a downlink transmission. Therefore efficiencies of the downlink transmission are enhanced. |
