Method and apparatus for transmitting and receiving broadcast signal in communication system

Patent metadata

Field	Value
Publication number	US-11979878-B2
Application number	US-202117499406-A
Country	US
Kind code	B2
Filing date	Oct 12, 2021
Priority date	Oct 16, 2020
Publication date	May 7, 2024
Grant date	May 7, 2024

Abstract

An operation method of a terminal in a communication system may comprise: performing a monitoring operation to receive BWP configuration information for common downlink communication; in response to receiving the BWP configuration information from the base station, configuring a common frequency region for the common downlink communication based on the BWP configuration information; receiving DCI including scheduling information of the common downlink communication from the base station; and performing the common downlink communication with the base station in the common frequency region by using a frequency resource indicated by the scheduling information, wherein the common downlink communication is communication between the base station and a plurality of terminals including the terminal.

First claim

What is claimed is:

1. An operation method of a terminal in a communication system, the operation method comprising:
performing a monitoring operation to receive bandwidth part (BWP) configuration information for common downlink communication from a base station;
in response to receiving the BWP configuration information from the base station, configuring a common frequency region for the common downlink communication based on the BWP configuration information;
receiving downlink control information (DCI) including scheduling information of the common downlink communication from the base station; and
performing the common downlink communication with the base station in the common frequency region by using a frequency resource indicated by the scheduling information,
wherein the common downlink communication is communication between the base station and a plurality of terminals including the terminal, and
wherein when the BWP configuration information for configuring the common frequency region for the common downlink communication is not received from the base station, a frequency region in which a control resource set 0 (CORESET0) is configured is considered as the common frequency region.

2. The operation method according to claim 1 , wherein a starting position of the common frequency region indicated by the BWP configuration information is indicated with reference to a Point A.

3. The operation method according to claim 1 , wherein the DCI is scrambled by a common radio network temporary identifier (RNTI) for the common downlink communication.

4. The operation method according to claim 1 , wherein a number of bits of frequency domain resource assignment (FDRA) in the scheduling information is determined based on a number of resource blocks (RBs) included in the common frequency region configured based on the BWP configuration information.

5. The operation method according to claim 1 , wherein the BWP configuration information further includes information indicating rate-matching for the common frequency region, and downlink data in the common downlink communication is obtained by performing the rate-matching for the common frequency region.

6. The operation method according to claim 1 , wherein a number of bits of FDRA in the scheduling information is determined based on a number of RBs included in the common frequency region configured based on the CORESET0, and the frequency resource indicated by the FDRA is limited within the frequency region of the CORESET0.

7. The operation method according to claim 1 , wherein when the BWP configuration information is not received from the base station and the CORESET0 is not configured, the common frequency region is configured as a frequency region of an initial BWP.

8. The operation method according to claim 7 , wherein a number of bits of FDRA in the scheduling information is determined based on a number of RBs included in the common frequency region configured based on the initial BWP, and the frequency resource indicated by the FDRA is limited within the frequency region of the initial BWP.

9. An operation method of a base station in a communication system, the operation method comprising:
transmitting bandwidth part (BWP) configuration information for common downlink communication to a terminal;
transmitting downlink control information (DCI) including scheduling information of the common downlink communication to the terminal; and
performing the common downlink communication with the terminal within a common frequency region indicated by the BWP configuration information by using a frequency resource indicated by the scheduling information,
wherein the common downlink communication is communication between the base station and a plurality of terminals including the terminal, and
wherein when the BWP configuration information for configuring the common frequency region for the common downlink communication is not transmitted to the terminal, a frequency region in which a control resource set 0 (CORESET0) is configured is considered as the common frequency region.

10. The operation method according to claim 9 , wherein a starting position of the common frequency region indicated by the BWP configuration information is indicated with reference to a Point A.

11. The operation method according to claim 9 , wherein the DCI is scrambled by a common radio network temporary identifier (RNTI) for the common downlink communication.

12. The operation method according to claim 9 , wherein a number of bits of frequency domain resource assignment (FDRA) in the scheduling information is determined based on a number of resource blocks (RBs) included in the common frequency region configured based on the BWP configuration information.

13. The operation method according to claim 9 , wherein the BWP configuration information further includes information indicating rate-matching for the common frequency region, and downlink data in the common downlink communication is transmitted by performing the rate-matching for the common frequency region.

14. A terminal in a communication system, the terminal comprising:
a processor;
a memory electronically communicating with the processor; and
instructions stored in the memory,
wherein when executed by the processor, the instructions cause the terminal to:
perform a monitoring operation to receive bandwidth part (BWP) configuration information for common downlink communication from a base station;
in response to receiving the BWP configuration information from the base station, configure a common frequency region for the common downlink communication based on the BWP configuration information;
receive downlink control information (DCI) including scheduling information of the common downlink communication from the base station; and
perform the common downlink communication with the base station in the common frequency region by using a frequency resource indicated by the scheduling information,
wherein the common downlink communication is communication between the base station and a plurality of terminals including the terminal, and
wherein when the BWP configuration information for configuring the common frequency region for the common downlink communication is not received from the base station, a frequency region in which a control resource set 0 (CORESET0) is configured is considered as the common frequency region.

15. The terminal according to claim 14 , wherein a starting position of the common frequency region indicated by the BWP configuration information is indicated with reference to a Point A.

16. The terminal according to claim 14 , wherein the DCI is scrambled by a common radio network temporary identifier (RNTI) for the common downlink communication.

17. The terminal according to claim 14 , wherein a number of bits of frequency domain resource assignment (FDRA) in the scheduling information is determined based on a number of resource blocks (RBs) included in the common frequency region configured based on the BWP configuration information.

18. The terminal according to claim 14 , wherein a number of bits of FDRA in the scheduling information is determined based on a number of RBs included in the common frequency region configured based on the CORESET0, and the frequency resource indicated by the FDRA is limited within the frequency region of the CORESET0.

19. The terminal according to claim 14 , wherein when the BWP configuration information is not received from the base station and the CORESET0 is not configured, the common frequency regi

Assignees

• Electronics & Telecommunications Res Inst

Inventors

• Jung Hoi Yoon
• Park Sung Ik
• Hur Nam Ho
• Ahn Seok Ki
• Ahn Sung Jun

Classifications

• H04W72/1273 Primary

  of downlink data flows · CPC title

• H04W72/044

  based on the type of the allocated resource · CPC title

• H04W72/23 Primary

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

• H04W72/0453

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