Phase tracking reference signal sending method and apparatus
AssigneeHuawei Technologies Co., Ltd.
InventorsHaibao Ren, Yi Qin, Xi Zhang
Life of this patent
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Abstract
This application provides a phase tracking reference signal (PTRS) sending method and apparatus. The method includes: implicitly determining, by a terminal device based on obtained uplink grant information and a preset rule, a to-be-sent PTRS and an antenna port for carrying the to-be-sent PTRS, where the antenna port is selected from an antenna port set, and the to-be-sent PTRS is one or more of all available PTRSs; and putting the to-be-sent PTRS on the antenna port, and sending the to-be-sent PTRS on the antenna port. This implicit indication method can effectively reduce air interface signaling overheads and improve air interface efficiency.
Claims21
A phase tracking reference signal (PTRS) sending method, comprising:
- obtaining, by a terminal device, uplink grant information;
- determining, by the terminal device based on the uplink grant information and a preset rule, an antenna port associated with a to-be-sent PTRS, wherein the antenna port associated with the to-be-sent PTRS is selected from an antenna port set and the to-be-sent PTRS is one or more of all available PTRSs;
- and
- sending, by the terminal device, the to-be-sent PTRS on the antenna port, wherein the uplink grant information comprises precoding codeword information and the preset rule comprises each column of a precoding codeword corresponding to the precoding codeword information and each antenna port in the antenna port set are in a one-to-one correspondence, and antenna ports in the antenna port set that correspond to columns in which non-zero elements in a same row of the precoding codeword are located correspond to a same to-be-sent PTRS.
(canceled)
A phase tracking reference signal PTRS sending apparatus, comprising a processor, wherein the processor is configured to:
- obtain uplink grant information;
- and
- determine, based on the uplink grant information and a preset rule, an antenna port associated with a to-be-sent PTRS, wherein the antenna port associated with the to-be-sent PTRS is selected from an antenna port set, and the to-be-sent PTRS is one or more of all available PTRSs;
- wherein the uplink grant information comprises precoding codeword information;
- and
- the preset rule comprises:
- each column of a precoding codeword corresponding to the precoding codeword information and each antenna port in the antenna port set are in a one-to-one correspondence, and antenna ports in the antenna port set that correspond to columns in which non-zero elements in a same row of the precoding codeword are located correspond to a same to-be-sent PTRS.
(canceled)
Dependencies are inferred from the claim text.