Method, terminal, and base station for use in data transmission

Abstract

Disclosed are a method, a terminal, and a base station for use in data transmission. The present invention allows the terminal to receive a downlink control signaling at a low frequency band and to transmit data at a high frequency band when high-speed data transmission is required. The method comprises: when there is no data transmission, the terminal receives first indication information in a first cell using a first frequency band, the first indication information being used for indicating a terminal having received the first indication information to use a second frequency band for data transmission; the terminal transmits data in a second cell using the second frequency band on the basis of the first indication information when data transmission is required.

1 . A terminal, comprising:
 a transceiver, configured to, when no data is to be transmitted or received, receive first indication information in a first cell using a first frequency band, the first indication information being configured to instruct a terminal receiving the first indication information to perform data transmission using a second frequency band when there is data to be transmitted or received, wherein   the transceiver is further configured to, when there is data to be transmitted or received, perform data transmission in a second cell using the second frequency band according to the first indication information.   
     
     
         2 . The terminal of  claim 1 , further comprising:
 a processor, configured to determine one or more second cells using the second frequency band to be a target cell according to the first indication information; and   the processor is configured to perform synchronization with the target cell, wherein   the transceiver is configured to, when there is data to be transmitted or received, perform data transmission with the target cell using the second frequency band.   
     
     
         3 . The terminal of  claim 2 , wherein the first indication information is paging information transmitted by a first base station through the first cell, or the first indication information is the paging information and configuration information of the target cell, the first indication information comprises at least one of the following information: information of a second frequency band, information of a base station containing the target cell, or information of the target cell, the first base station is a base station containing the first cell, and
 the processor is configured to determine the target cell according to the paging information; or,   the processor is configured to determine the target cell according to the paging information and the configuration information of the target cell.   
     
     
         4 . The terminal of  claim 2 , wherein the first indication information is system information of the second cell transmitted by the first base station through the first cell, the system information of the second cell comprises at least one of the following information: information of a frequency band of the second cell, information of a base station containing the second cell, or information of a second cell, and the first base station is a base station containing the first cell, and
 the transceiver is configured to receive system information of at least one second cell, in the first cell using the first frequency band, the system information of the at least one second cell corresponding to the at least one second cell; and   the processor is configured to determine one or more second cells from the at least one second cell to be the target cell according to the system information of the at least one second cell.   
     
     
         5 . The terminal of  claim 2 , wherein the transceiver is further configured to transmit an uplink synchronization message to the target cell belonging to a target base station on the second frequency band, the uplink synchronization message being configured to obtain uplink synchronization information between the terminal and the target cell;
 the transceiver is further configured to receive the uplink synchronization information in the first cell, the uplink synchronization information being acquired by the first base station from the target base station, the uplink synchronization information being determined by the target base station on the basis of the uplink synchronization message, and the first base station being the base station containing the first cell; and   the processor is configured to perform uplink synchronization with the target cell according to the uplink synchronization information.   
     
     
         6 . The terminal of  claim 5 , wherein uplink synchronization information and a transmitting resource are determined by the target base station and transmitted to the terminal through the first base station; or
 the uplink synchronization information is requested by the first base station from the target base station, and transmitted to the terminal by the first base station after the target base station obtains the uplink synchronization information and allocates the transmitting resource,   wherein the uplink synchronization information comprises indication information of the transmitting resource.   
     
     
         7 . The terminal of  claim 2 , wherein the transceiver is further configured to receive downlink synchronization information of the first cell in the first cell;
 the processor is further configured to determine downlink synchronization information of the target cell; and   the processor is configured to perform downlink synchronization with the target cell according to the downlink synchronization information of the target cell.   
     
     
         8 . The terminal of  claim 7 , wherein the transceiver is further configured to receive at least one downlink synchronization offset information transmitted by the first base station through the first cell and corresponding to the at least one second cell, each downlink synchronization offset information comprising a time offset between timing of the corresponding second cell and timing of the first cell, and the first base station being the base station containing the first cell; and
 the processor is configured to determine the downlink synchronization information of the target cell according to the downlink synchronization offset information of the at least one second cell.   
     
     
         9 . A base station, comprising:
 a processor, configured to determine first indication information, the first indication information being configured to indicate a terminal receiving the first indication information to transmit data in a second cell using a second frequency band, and the base station being a base station containing a first cell using a first frequency band; and   a transceiver, configured to transmit the first indication information through the first cell.   
     
     
         10 . The base station of  claim 9 , wherein the first indication information is paging information, or the first indication information is the paging information and configuration information of a target cell, the first indication information comprises at least one of the following information: information of a second frequency band, information of a target base station, or information of the target cell, the second cell comprises the target cell, and the target base station is a base station containing the target cell, and
 the transceiver is configured to transmit the paging information through the first cell; or,   the transceiver is configured to transmit the paging information and the configuration information of the target cell through the first cell.   
     
     
         11 . The base station of  claim 9 , wherein the first indication information is system information of the second cell, the system information of the second cell comprises at least one of the following information: information of a frequency band of the second cell, information of a base station containing the second cell, or information of the second cell, and
 the transceiver is further configured to receive system information of at least one second cell from at least one second base station, the system information of the at least one second cell corresponding to the at least one second cell; and   the transceiver is configured to transmit the system information of the at least one second cell through the first cell.   
     
     
         12 . The base station of  claim 9 , wherein the transceiver is further configured to transmit uplink synchronization information through the first cell, the uplink synchronization information being acquired by the first base station from the target base station, and the uplink synchronization information being determined by the target base station on the basis of an uplink synchronization message transmitted by the terminal to the target base station on the second frequency band, wherein the target base station is a base station containing the target cell, and the target cell is determined by the terminal from the at least one second cell. 
     
     
         13 . The base station of  claim 9 , wherein the transceiver is further configured to transmit downlink synchronization information of the first cell to the terminal through the first cell. 
     
     
         14 . The base station of  claim 13 , wherein the transceiver is further configured to transmit at least one downlink synchronization offset information corresponding to the at least one second cell to the terminal through the first cell, each downlink synchronization offset information comprising a time offset between timing of the corresponding second cell and timing of the first cell. 
     
     
         15 . A base station, comprising:
 a transceiver, configured to transmit system information of a second cell to a first base station, the system information being configured to indicate a system parameter of the second cell, a carrier frequency corresponding to the second cell belonging to a second frequency band, the first base station being a base station to which a first cell using a first frequency band belongs and the second base station pre-storing a mapping relationship between the second cell and the first cell, wherein   the transceiver is further configured to transmit data with a terminal through the second cell.   
     
     
         16 . The base station of  claim 15 , wherein the transceiver is further configured to receive an uplink synchronization request from the terminal on the second frequency band, the uplink synchronization request being configured to obtain uplink synchronization information between the terminal and the second cell; and
 the transceiver is further configured to determine the uplink synchronization information according to the uplink synchronization request and transmit the uplink synchronization information to the first base station.