Method and device for transmitting reference signals

Patent metadata

Field	Value
Publication number	US-11811508-B2
Application number	US-201817266800-A
Country	US
Kind code	B2
Filing date	Aug 9, 2018
Priority date	Aug 9, 2018
Publication date	Nov 7, 2023
Grant date	Nov 7, 2023

Abstract

A method and device for transmitting reference signals are provided in the present disclosure, where the method for transmitting reference signals is performed by a user terminal and time-frequency resources for the user terminal are divided into multiple groups of time-frequency resources. The method includes: selecting a reference signal port for each group of time-frequency resources from candidate reference signal ports; and transmitting reference signals by using the reference signal port corresponding to each group of time-frequency resources.

First claim

What is claimed is:

1. A method for transmitting reference signals performed by a terminal, time-frequency resources for the terminal being divided into multiple groups of time-frequency resources, the method comprising:
selecting a reference signal port for each group of time-frequency resources from candidate reference signal ports; and
transmitting reference signals by using the reference signal port corresponding to each group of time-frequency resources in one transmission;
wherein the candidate reference signal ports constitute one or more sets of candidate reference signal ports;
wherein the selecting a reference signal port for each group of time-frequency resources from candidate reference signal ports includes:
selecting a reference signal port for a first group of time-frequency resources from a first set of candidate reference signal ports; and
determining, from the first set of candidate reference signal ports, reference signal ports for other groups of time-frequency resources of the multiple groups of time-frequency resources, according to the selected reference signal port for the first group of time-frequency resources and a reference signal port offset parameter.

2. The method of claim 1 , wherein the time-frequency resources for the terminal being divided into multiple groups of time-frequency resources including:
physical resource blocks for the terminal being divided into multiple groups of physical resource blocks according to time-frequency resource division parameters.

3. The method of claim 1 , wherein the time-frequency resources for the terminal being divided into multiple groups of time-frequency resources including:
reference signal symbols for the terminal being divided into multiple groups of reference signal symbols according to time-frequency resource division parameters.

4. The method of claim 1 , wherein when the candidate reference signal ports constitute multiple sets of candidate reference signal ports,
the multiple sets of candidate reference signal ports correspond to the multiple groups of time-frequency resources,
the selecting a reference signal port for each group of time-frequency resources from candidate reference signal ports includes:
selecting a reference signal port for each group of time-frequency resources from each set of candidate reference signal ports, respectively.

5. The method of claim 1 , wherein each set of candidate reference signal ports in the one or more sets of candidate reference signal ports includes at least reference signal ports corresponding to first-subtype reference signals of the reference signals.

6. The method of claim 1 , further comprising:
determining a reference signal power parameter for each group of time-frequency resources;
wherein the transmitting reference signals by using the reference signal port corresponding to each group of time-frequency resources includes:
transmitting the reference signals by using the reference signal port corresponding to each group of time-frequency resources and with a transmission power indicated by the reference signal power parameter corresponding to each group of time-frequency resources.

7. A terminal, time-frequency resources for the terminal being divided into multiple groups of time-frequency resources, the terminal comprising:
a processor configured to select a reference signal port for each group of time-frequency resources from candidate reference signal ports; and
a transmitter configured to transmit reference signals by using the reference signal port corresponding to each group of time-frequency resources in one transmission;
wherein the candidate reference signal ports constitute one or more sets of candidate reference signal ports; and
wherein the processor selects a reference signal port for a first group of time-frequency resources from a first set of candidate reference signal ports, and determines, from the first set of candidate reference signal ports, reference signal ports for other groups of time-frequency resources of the multiple groups of time-frequency resources according to the selected reference signal port for the first group of time-frequency resources and a reference signal port offset parameter.

8. The terminal of claim 7 , wherein
the processor further determines a reference signal power parameter for each group of time-frequency resources;
wherein the transmitter is further configured to transmit the reference signals by using the reference signal port corresponding to each group of time-frequency resources and with a transmission power indicated by the reference signal power parameter corresponding to each group of time-frequency resources.

9. The terminal of claim 7 , wherein the processor divides physical resource blocks for the terminal into multiple groups of physical resource blocks according to time-frequency resource division parameters.

10. The terminal of claim 7 , wherein the processor divides reference signal symbols for the terminal into multiple groups of reference signal symbols according to time-frequency resource division parameters.

11. The terminal of claim 7 , wherein when the candidate reference signal ports constitute multiple sets of candidate reference signal ports,
the multiple sets of candidate reference signal ports correspond to the multiple groups of time-frequency resources,
the processor selects a reference signal port for each group of time-frequency resources from each set of candidate reference signal ports, respectively.

12. The terminal of claim 7 , wherein each set of candidate reference signal ports in the one or more sets of candidate reference signal ports includes at least reference signal ports corresponding to first-subtype reference signals of the reference signals.

Assignees

• Ntt Docomo Inc

Inventors

• Liu Wenjia
• Wang Runxin
• Hou Xiaolin
• Wang Xin

Classifications

• H04L5/0048 Primary

  Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091) · CPC title

• H04L5/001

  the frequencies being arranged in component carriers · CPC title

• H04L5/0092

  Indication of how the channel is divided · CPC title

• H04L5/0094

  Indication of how sub-channels of the path are allocated · CPC title

• H04W72/0446

  Resources in time domain, e.g. slots or frames · CPC title