Method for using radio interface technology, apparatus, and communications system

A method for using a radio interface technology, wherein a frequency band of a cell is divided into N frequency ranges, each of the N frequency ranges supports one radio interface technology, and the cell supports at least two radio interface technologies the method comprising:

• receiving, by a user equipment (UE), radio resource configuration information of the N frequency ranges and random access resource information of the cell that are sent by the base station, wherein the random access resource information is used to instruct the UE to access the cell or instruct the UE to perform uplink synchronization with the cell;
• accessing, by the UE, a wireless network or performing uplink synchronization according to the random access resource information of the cell sent by the base station;
• receiving, by the UE, indication information sent by the base station, wherein the indication information is used to indicate a frequency range into which a data radio bearer (DRB) of the UE is to be mapped;
• mapping, by the UE, the DRB of the UE into the frequency range into which the DRB is to be mapped;
• and
• transmitting, by the UE by using a radio interface technology supported by the frequency range into which the DRB is mapped, a service carried on the DRB with the base station;
• wherein N is an integer, and N≧2.

A base station device, comprising:

• a processor, configured to divide a frequency band of a cell into N frequency ranges, wherein each of the N frequency ranges supports one radio interface technology, and the cell supports at least two radio interface technologies;
• and
• a transceiver, configured to send radio resource configuration information of the N frequency ranges and random access resource information of the cell to a user equipment (UE), wherein the random access resource information is used to instruct the UE to access the cell or instruct the UE to perform uplink synchronization with the cell;
• wherein the processor is further configured to map a data radio bearer (DRB) of the UE into at least one frequency range of the N frequency ranges, wherein each of the DRB is corresponding to one of the at least one frequency range, and each of the at least one frequency range is corresponding to at least one of the DRB;
• and
• wherein the transceiver is further configured to transmit, by using a radio interface technology supported by the frequency range into which the DRB is mapped, a service carried on the DRB with the UE;
• wherein N is an integer, and N≧2.

A terminal device wherein the terminal device configured to support a method for using a radio interface technology, wherein a frequency band of a cell is divided into N frequency ranges, each of the N frequency ranges supports one radio interface technology, and the cell supports at least two radio interface technologies, wherein the terminal device comprises:

• a transceiver, configured to receive radio resource configuration information of the N frequency ranges and random access resource information of the cell that are sent by the base station, wherein the random access resource information is used to instruct the terminal device to access the cell or instruct the terminal device to perform uplink synchronization with the cell;
• and
• a processor, configured to access a wireless network or perform uplink synchronization according to the random access resource information of the cell sent by the base station;
• wherein the transceiver is further configured to receive indication information sent by the base station, wherein the indication information is used to indicate a frequency range into which a data radio bearer (DRB) of the terminal device is to be mapped;
• wherein the processor is further configured to map the DRB of the terminal device into the frequency range into which the DRB is to be mapped;
• wherein the transceiver is further configured to transmit, by using a radio interface technology supported by the frequency range into which the DRB is mapped, a service carried on the DRB with the base station;
• and
• wherein N is an integer, and N≧2.