Reference Signal Sending and Receiving Method and Communication Apparatus

A method, comprising:

• determining a plurality of communication resources, wherein channel vectors corresponding to any two adjacent communication resources in the plurality of communication resources meet a first relationship, and wherein the first relationship comprises at least one of:
• a spatial included angle between the channel vectors is a first value or a rotation included angle between the channel vectors is a second value;
• receiving, from a network device on the plurality of communication resources, a demodulation reference signal;
• and
• performing, based on the demodulation reference signal, channel estimation.

An apparatus, comprising:

• one or more memories configured to store instructions;
• and
• one or more processors coupled to the one or more memories and configured to execute the instructions to cause the apparatus to:
• determine a plurality of communication resources, wherein channel vectors corresponding to any two adjacent communication resources in the plurality of communication resources meet a first relationship, and wherein the first relationship comprises at least one of:
• a spatial included angle between the channel vectors is a first value or a rotation included angle between the channel vectors is a second value;
• receive, from a network device on the plurality of communication resources, a demodulation reference signal;
• and
• perform, based on the demodulation reference signal, channel estimation.