Method, device, and apparatus for determining downlink parameter

User equipment (UE) comprising:

• a receiver;
• a processor;
• and
• a non-transitory computer readable storage medium storing a program for execution by the processor, the program including instructions to:
• acquire category information and modulation information of the UE, wherein the category information comprises a UE category of the UE, and wherein the modulation information comprises a highest order modulation scheme that is supported by the UE;
• and
• determine, as a downlink parameter of the UE, a downlink parameter corresponding to the UE category of the UE and the highest order modulation scheme supported by the UE, wherein the downlink parameter of the UE is determined according to the UE category of the UE and the highest order modulation scheme supported by the UE;
• wherein the downlink parameter comprises at least a maximum number of resource blocks (RBs) that can be received by the UE while a target modulation scheme is used in downlink transmission;
• and
• wherein the receiver is configured to receive first configuration information and second configuration information sent by a base station, wherein the first configuration information indicates a downlink transmission mode for transmission from the base station to the UE according to a number of RB blocks allocated to the UE by the base station according to the highest order modulation scheme supported by the UE and the received maximum number of RBs, wherein the number of RBs allocated to the UE is less than or equal to the maximum number of RBs;
• and wherein the second configuration information indicates whether a target modulation scheme is supported when downlink transmission is performed with the UE.

A method comprising:

• receiving category information and modulation information reported by a user equipment (UE), wherein the category information comprises a UE category of the UE, and wherein the modulation information comprises a highest order modulation scheme that is supported by the UE;
• receiving a maximum number of RBs that can be received by the UE while a target modulation scheme is used in downlink transmission, reported by the UE;
• determining a downlink parameter of the UE corresponding to the UE category of the UE and the highest order modulation scheme supported by the UE, wherein the downlink parameter of the UE is determined according to the UE category of the UE and the highest order modulation scheme supported by the UE, wherein the downlink parameter comprises at least the maximum number of resource blocks (RBs) that can be received by the UE;
• determining, according to the highest order modulation scheme supported by the UE and the received maximum number of RBs, a number of RBs allocated to the UE, wherein the number of RBs allocated to the UE is less than or equal to the received maximum number of RBs;
• and
• sending first configuration information and second configuration information to the UE, wherein the first configuration information indicates a downlink transmission mode, wherein the second configuration information indicates whether a target modulation scheme is supported while downlink transmission is performed with the UE.