Channel state information transmission method and apparatus

A channel state information transmission method, comprising:

• sending reporting configuration information, wherein the reporting configuration information indicates a reporting type, and the reporting type indicates group-based reporting;
• and
• receiving channel state information, wherein the channel state information comprises indexes of X first reference signal resources and Y pieces of channel quality information, X is an integer greater than or equal to 2, and Y is an integer greater than or equal to 1, wherein
• channel quality information of a jth first reference signal resource is determined based on the jth first reference signal resource and a second reference signal resource that has a first association relationship with the jth first reference signal resource, and the jth first reference signal resource is one of the X first reference signal resources, wherein the jth first reference signal resource and the second reference signal resource that has the first association relationship with the jth first reference signal resource satisfy a quasi-colocation (QCL) relationship;
• and
• the second reference signal resource that has the first association relationship with the jth first reference signal resource is determined based on a first reference signal resource reported in a same group as the jth first reference signal resource, and the first reference signal resource reported in the same group as the jth first reference signal resource is a resource in the X first reference signal resources.

A communication apparatus, comprising:

• a transceiver;
• at least one processor;
• and
• one or more memories coupled to the at least one processor and storing programming instructions for execution by the at least one processor to cause the transceiver to:
• receive reporting configuration information, wherein the reporting configuration information indicates a reporting type, and the reporting type indicates group-based reporting, and;
• send channel state information, wherein the channel state information comprises indexes of X first reference signal resources and Y pieces of channel quality information, X is an integer greater than or equal to 2, and Y is an integer greater than or equal to 1, wherein
• channel quality information of a jth first reference signal resource is determined based on the jth first reference signal resource and a second reference signal resource that has a first association relationship with the jth first reference signal resource, the jth first reference signal resource is one of the X first reference signal resources, and j is an integer greater than or equal to 1 and less than or equal to X, wherein the jth first reference signal resource and the second reference signal resource that has the first association relationship with the ith first reference signal resource satisfy a quasi-colocation (QCL) relationship;
• and
• the second reference signal resource that has the first association relationship with the jth first reference signal resource is determined based on a first reference signal resource received simultaneously with the jth first reference signal resource, and the first reference signal resource received simultaneously with the jth first reference signal resource is a resource in the X first reference signal resources.