| 摘要 |
<p>A method, an apparatus and a system for adjusting synchronization and determining synchronization and out-of-synchronization for a multi-carrier terminal are disclosed by the present invention. The method for adjusting synchronization includes that: the multi-carrier terminal sends pilot frequency sequence on each carrier to a base station periodically after accessing a network; the base station determines Synchronization Control Command Word (SS) for each carrier according to the pilot frequency sequence on each carrier sent by the multi-carrier terminal, and sends the corresponding SS on each carrier; and after receiving the SS for all carriers, the multi-carrier terminal determines Timing Advance (TA) according to the received SS, and adjusts the transmission time for each carrier using the determined TA when sending data next time. The present invention can enable each carrier of the multi-carrier terminal to keep synchronization with the base station, ensure data transmission, and enable the terminal to perceive the synchronization and out-of-synchronization status with the base station side, thus performing corresponding processing.</p> |
