Method for transmitting physical channels, user equipment therefor, method and user equipment for relay transmission

Patent metadata

Field	Value
Publication number	US-12349173-B2
Application number	US-202318482594-A
Country	US
Kind code	B2
Filing date	Oct 6, 2023
Priority date	Feb 8, 2018
Publication date	Jul 1, 2025
Grant date	Jul 1, 2025

Abstract

The present invention discloses a physical channel transmission method, which includes: determining transmission subcarrier resources according to a configuration of a base station; and sending or receiving physical channels on the transmission subcarrier resources. Compared with the prior art, the present invention subdivides resource allocation units for transmitting physical channels from PRBs to subcarriers, which significantly improves the power spectral density of the uplink transmission and effectively achieves coverage enhancement.

First claim

What is claimed is:

1. A method performed by a terminal in a wireless communication system, the method comprising:
receiving, from a base station, information associated with a narrowband comprising information indicating that an activation of flexible starting physical resource block (PRB) of the narrowband for a physical downlink shared channel (PDSCH) resource allocation;
identifying a starting PRB index of the narrowband based on a shift of the narrowband for the PDSCH resource allocation, wherein the shift of the narrowband is identified based on a system bandwidth and an index of the narrowband; and
receiving downlink data based on the narrowband, and
wherein the narrowband is defined as six non-overlapping consecutive physical resource blocks in a frequency domain.

2. The method of claim 1 ,
wherein the terminal is configured to a coverage enhancement (CE) mode B.

3. The method of claim 1 ,
wherein the information associated with the narrowband is included in a higher layer signaling message.

4. The method of claim 1 ,
wherein in case that the system bandwidth is 15 megaHertz (MHz), the starting PRB index of the narrowband having index {0, 1, 2, 3, 4, 5} is shifted to −1, and the starting PRB index of the narrowband having index {6, 7, 8, 9, 10, 11} is not shifted.

5. The method of claim 1 ,
wherein in case that the system bandwidth is 10 megaHertz (MHz), the starting PRB index of the narrowband is shifted to −1.

6. The method of claim 1 ,
wherein in case that the system bandwidth is 5 megaHertz (MHz), the starting PRB index of the narrowband having index {2, 3} is shifted to −1, and the starting PRB index of the narrowband having index {0, 1} is not shifted.

7. The method of claim 1 ,
wherein in case that the system bandwidth is 3 megaHertz (MHz), the starting PRB index of the narrowband having index {0} is shifted to −1, and the starting PRB index of the narrowband having index {1} is not shifted.

8. The method of claim 7 ,
wherein in case that the system bandwidth is 3 MHz, the system bandwidth comprises 15 PRBs.

9. A terminal in a wireless communication system, the terminal comprising:
a transceiver; and
a controller configured to:
receive, from a base station via the transceiver, information associated with a narrowband comprising information indicating that an activation of flexible starting physical resource block (PRB) of the narrowband for a physical downlink shared channel (PDSCH) resource allocation,
identify a starting PRB index of the narrowband based on a shift of the narrowband for the PDSCH resource allocation, wherein the shift of the narrowband is identified based on a system bandwidth and an index of the narrowband, and
receive, via the transceiver, downlink data based on the narrowband,

wherein the narrowband is defined as six non-overlapping consecutive physical resource blocks in a frequency domain.

10. The terminal of claim 9 ,
wherein the terminal is configured to a coverage enhancement (CE) mode B.

11. The terminal of claim 9 ,
wherein the information associated with the narrowband is included in a higher layer signaling message.

12. The terminal of claim 9 ,
wherein in case that the system bandwidth is 15 megaHertz (MHz), the starting PRB index of the narrowband having index {0, 1, 2, 3, 4, 5} is shifted to −1, and the starting PRB index of the narrowband having index {6, 7, 8, 9, 10, 11} is not shifted.

13. The terminal of claim 9 ,
wherein in case that the system bandwidth is 10 megaHertz (MHz), the starting PRB index of the narrowband is shifted to −1.

14. The terminal of claim 9 ,
wherein in case that the system bandwidth is 5 megaHertz (MHz), the starting PRB index of the narrowband having index {2, 3} is shifted to −1, and the starting PRB index of the narrowband having index {0, 1} is not shifted.

15. The terminal of claim 9 ,
wherein in case that the system bandwidth is 3 megaHertz (MHz), the starting PRB index of the narrowband having index {0} is shifted to −1, and the starting PRB index of the narrowband having index {1} is not shifted.

16. The terminal of claim 15 ,
wherein in case that the system bandwidth is 3 MHz, the system bandwidth comprises 15 PRBs.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Su Di
• Sun Feifei
• Zhou Miao
• Qian Chen

Classifications

• H04W72/23 Primary

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title

• H04W72/1263

  Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows · CPC title

• H04W72/0453 Primary

  Resources in frequency domain, e.g. a carrier in FDMA · CPC title

• H04L5/0012

  Hopping in multicarrier systems · CPC title

• H04W76/11

  Allocation or use of connection identifiers · CPC title