Patent ID: 11901979
Assignee: DATANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 7:
8. The network side apparatus according to claim 7, wherein the processor configured to calculate the beams used while sending the CSI-RSs on the respective antenna ports associated with the respective transmission layers on the basis of the angle information and the delay information of the each transmission path of the uplink channel of the terminal, is configured to:
determine angle information and delay information corresponding to the respective antenna ports, wherein the angle information is obtained through calculation by using a corresponding spatial domain basis vector, and the delay information is obtained through calculation by using a corresponding frequency domain basis vector; and
calculate the beams used while sending the CSI-RS on the respective antenna ports on the basis of a kronecker product of the spatial domain basis vector and the frequency domain basis vector.