Method of transmitting and receiving reference signal and apparatus therefor

Patent metadata

Field	Value
Publication number	US-2020045708-A1
Application number	US-201916530775-A
Country	US
Kind code	A1
Filing date	Aug 2, 2019
Priority date	Aug 3, 2018
Publication date	Feb 6, 2020
Grant date	—

Abstract

A method of receiving a demodulation reference signal (DMRS) by a user equipment (UE) in a wireless communication system. The method includes receiving a physical downlink control channel (PDCCH) through control resource set (CORESET) #0, and receiving a physical downlink shared channel (PDSCH) scheduled based on the PDCCH and a DMRS for the PDSCH. When the PDCCH is addressed to a system information-radio network temporary identifier (SI-RNTI), a reference point for the DMRS may be subcarrier #0 of a lowest-numbered resource block (RB) among RBs included in the CORESET #0.

First claim

1 . A method of receiving a demodulation reference signal (DMRS) by a user equipment (UE) in a wireless communication system, the method comprising:
receiving a physical downlink control channel (PDCCH) through control resource set (CORESET) # 0 ; and receiving a physical downlink shared channel (PDSCH) scheduled based on the PDCCH and a DMRS for the PDSCH, wherein when the PDCCH is addressed to a system information-radio network temporary identifier (SI-RNTI), a reference point for the DMRS is subcarrier #0 of a lowest-numbered resource block (RB) among RBs included in the CORESET #0.

2 . The method of claim 1 , wherein the CORESET #0 is configured based on a physical broadcast channel (PBCH) included in a synchronization signal (SS)/PBCH block.

3 . The method of claim 1 , wherein the PDCCH is received through search space #0 of the CORESET #0.

4 . The method of claim 3 , wherein the search space #0 is a common search space configured based on a physical broadcast channel (PBCH) included in a synchronization signal (SS)/PBCH block.

5 . The method of claim 1 , wherein the UE is communicable with at least one of a UE other than the UE, a network, a base station (BS), or a self-driving vehicle.

6 . An apparatus for receiving a demodulation reference signal (DMRS) in a wireless communication system, the apparatus comprising:
at least one processor; and at least one computer memory operably connectable to the at least one processor and storing instructions that, when executed by the at least one processor, perform operations comprising: receiving a physical downlink control channel (PDCCH) through control resource set (CORESET) #0, and receiving a physical downlink shared channel (PDSCH) scheduled based on the PDCCH and a DMRS for the PDSCH, and wherein when the PDCCH is addressed to a system information-radio network temporary identifier (SI-RNTI), a reference point for the DMRS is subcarrier #0 of a lowest-numbered resource block (RB) among RBs included in the CORESET #0.

7 . The apparatus of claim 6 , wherein the CORESET #0 is configured based on a physical broadcast channel (PBCH) included in a synchronization signal (SS)/PBCH block.

8 . The apparatus of claim 6 , wherein the PDCCH is received through search space #0 of the CORESET #0.

9 . The apparatus of claim 8 , wherein the search space #0 is a common search space configured based on a physical broadcast channel (PBCH) included in a synchronization signal (SS)/PBCH block.

10 . The apparatus of claim 6 , wherein the apparatus is communicable with at least one of a user equipment (UE), a network, a base station (BS), or a self-driving vehicle other than the apparatus.

11 . A user equipment (UE) for receiving a demodulation reference signal (DMRS) in a wireless communication system, the UE comprising:
at least one transceiver; at least one processor; and at least one computer memory operably connectable to the at least one processor and storing instructions that, when executed by the at least one processor, perform operations comprising: receiving, through the at least one transceiver, a physical downlink control channel (PDCCH) through control resource set (CORESET) #0, and receiving, through the at least one transceiver, a physical downlink shared channel (PDSCH) scheduled based on the PDCCH and a DMRS for the PDSCH, and wherein when the PDCCH is addressed to a system information-radio network temporary identifier (SI-RNTI), a reference point for the DMRS is subcarrier #0 of a lowest-numbered resource block (RB) among RBs included in the CORESET #0.

12 . A method of transmitting a demodulation reference signal (DMRS) by a base station (BS) in a wireless communication system, the method comprising:
transmitting a physical downlink control channel (PDCCH) through control resource set (CORESET) #0; and transmitting a physical downlink shared channel (PDSCH) scheduled based on the PDCCH and a DMRS for the PDSCH, wherein when the PDCCH is addressed to a system information-radio network temporary identifier (SI-RNTI), a reference point for the DMRS is subcarrier #0 of a lowest-numbered resource block (RB) among RBs included in the CORESET #0.

13 . A base station (BS) for transmitting a demodulation reference signal (DMRS) in a wireless communication system, the BS comprising:
at least one transceiver; at least one processor; and at least one computer memory operably connectable to the at least one processor and storing instructions that, when executed by the at least one processor, perform operations comprising: transmitting, through the at least one transceiver, a physical downlink control channel (PDCCH) through control resource set (CORESET) # 0 , and transmitting, through the at least one transceiver, a physical downlink shared channel (PDSCH) scheduled based on the PDCCH and a DMRS for the PDSCH, and wherein when the PDCCH is addressed to a system information-radio network temporary identifier (SI-RNTI), a reference point for the DMRS is subcarrier #0 of a lowest-numbered resource block (RB) among RBs included in the CORESET #0.

Assignees

• Lg Electronics Inc

Inventors

• Hwang Daesung
• Yi Yunjung

Classifications

• H04W56/001

  Synchronization between nodes · CPC title

• H04W72/23 Primary

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

• H04W72/53 Primary

  based on regulatory allocation policies · CPC title

• H04L5/10

  with dynamo-electric generation of carriers; with mechanical filters or demodulators · CPC title

• H04L5/0051

  of dedicated pilots, i.e. pilots destined for a single user or terminal · CPC title