Method for configuring channel state information reporting band and communications apparatus

A transmit end device comprising at least one processor and a memory storing instructions for execution by the processor such that, when the processor executes the instructions, the processor is configured to provide at least the following operations:

• determine an actual quantity of resource blocks in a normal channel state information subband belonging to a channel state information reporting frequency band based on a bandwidth part (BWP),
• wherein the channel state information reporting frequency band comprises first and last channel state information subbands and the normal channel state information subband;
• and
• determine an actual quantity of resource blocks in each of the first and last channel state information subband based on the actual quantity of resource blocks in the normal channel state information subband,
• wherein the actual quantity of resource blocks in the first channel state information subband equals the actual quantity of resource blocks in the normal channel state information subband minus mod (an index number of an initial resource block in the BWP, the actual quantity of resource blocks comprised in the normal channel state information subband).

A non-transitory computer readable medium storing instructions for execution by a processor that, when executed by the processor, cause the processor to be configured to provide at least the following operations:

• determining an actual quantity of resource blocks in a normal channel state information subband belonging to a channel state information reporting frequency band based on a bandwidth part (BWP),
• wherein the channel state information reporting frequency band comprises first and last channel state information subbands and the normal channel state information subband;
• and
• determining an actual quantity of resource blocks in each of the first and last channel state information subbands based on the actual quantity of resource blocks in the normal channel state information subband,
• wherein the actual quantity of resource blocks in the first channel state information subband equals the actual quantity of resource blocks in the normal channel state information subband minus mod (an index number of an initial resource block in the BWP, the actual quantity of resource blocks comprised in the normal channel state information subband).

A chip comprising at least one processor and a memory, wherein the at least one processor executes a program instruction stored in the memory that causes the processor to configure a channel state information reporting frequency band by:

• determining an actual quantity of resource blocks in a normal channel state information subband belonging to a channel state information reporting frequency band based on a bandwidth part (BWP),
• wherein the channel state information reporting frequency band comprises first and last channel state information subbands and the normal channel state information subband;
• and
• determining an actual quantity of resource blocks in each of the first and last channel state information subbands based on the actual quantity of resource blocks in the normal channel state information subband,
• wherein the actual quantity of resource blocks in the first channel state information subband equals the actual quantity of resource blocks in the normal channel state information subband minus mod (an index number of an initial resource block in the BWP, the actual quantity of resource blocks comprised in the normal channel state information subband).