METHOD FOR DETERMINING POWER BOOSTING LEVEL OF PTRS FOR REMOVING PHASE NOISE IN WIRELESS COMMUNICATION SYSTEM AND DEVICE THEREFOR

• US 20180351719A1
• Filed: 11/09/2017
• Published: 12/06/2018
• Est. Priority Date: 11/09/2016
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: LEE, Kilbom, KO, Hyunsoo, KANG, Jiwon, KIM, Kyuseok, KIM, Kijun
• Granted Patent: US 10,461,907 B2
• Time in Patent Office: Days
• CPC Class Codes: H04L 1/00 Arrangements for detecting or preventing errors in the information received correcting synchronisation H04L7/00
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/005 of common pilots, i.e. pilots destined for multiple users or terminals
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04W 24/08 Testing, supervising or monitoring using real traffic
• CPC Class Codes: H04W 48/12 using downlink control channel
• CPC Class Codes: H04W 72/541 using the level of interference

Abstract

According to an embodiment of the present specification, provided is a method for transmitting a signal that allows a user equipment to cancel phase noise by a base station in an mmWave communication system. In this case, the method may include: generating a PTRS for estimating phase noise of a downlink signal; transmitting PTRS power boosting level information for the PTRS to the user equipment via downlink signaling; and transmitting the PTRS via downlink signaling based on the PTRS power boosting level information. In this case, the PTRS power boosting level information may be determined based on at least one of MCS level and PRB size.

Claims

1-20. -20. (canceled)

21. A method for transmitting a phase tracking reference signal (PTRS) to user equipment (UE) by a base station (BS) in a wireless communication system, the method comprising:

generating the PTRS for estimating phase noise of a downlink signal; and

transmitting the PTRS based on a PTRS power boosting level which is determined on the basis of a number of total layers associated with the PTRS.

22. A method for receiving a phase tracking reference signal (PTRS) from a base station (BS) by a user equipment (UE) in a wireless communication system, the method comprising:

acquiring information on a number of total layers associated with the PTRS; and

receiving the PTRS based on a PTRS power boosting level which is determined on the basis of the number of total layers associated with the PTRS.

23. The method of claim 22, wherein when PTRS power boosting information indicating an on/off state of PTRS power boosting is transmitted from the BS to the UE, the PTRS power boosting level is determined on the basis of the number of total layers associated with the PTRS and the PTRS power boosting information.

24. The method of claim 23, wherein the PTRS power boosting information is transmitted to the UE through radio resource control (RRC) signaling.

25. The method of claim 22, wherein when the number of total layers is L, a level value of the PTRS power boosting satisfies following equation:

the level value of the PTRS power boosting level=10*log₂(L). 

 

[equation]

26. The method of claim 22, wherein the number of total layers corresponds to a number of DMRS (Demodulation Reference Signal) ports associated with the PTRS.

27. The method of claim 22, wherein a level value of PTRS power boosting corresponds to an energy per resource element (EPRE) ratio between the PTRS and a physical downlink shared channel (PDSCH).

28. A user equipment (UE) for receiving a phase tracking reference signal (PTRS) from a base station (BS) by a user equipment (UE) in a wireless communication system, the UE comprising:

a receiver configured to receive signals from external devices;

a transmitter configured to transmit signals to the external devices; and

a processor configured to control the receiver and the transmitter,

wherein the processor is configured to;

acquire information on a number of total layers associated with the PTRS; and

receive the PTRS based on a PTRS power boosting level which is determined on the basis of the number of total layers associated with the PTRS.

29. The UE of claim 28, wherein when PTRS power boosting information indicating an on/off state of PTRS power boosting is transmitted from the BS to the UE, the PTRS power boosting level is determined on the basis of the number of total layers associated with the PTRS and the PTRS power boosting information.

30. The UE of claim 29, wherein the PTRS power boosting information is transmitted to the UE through radio resource control (RRC) signaling.

31. The UE of claim 28, wherein when the number of total layers is L, a level value of the PTRS power boosting satisfies following equation:

the level value of the PTRS power boosting level=10*log₂(L). 

 

[equation]

32. The UE of claim 28, wherein the number of total layers corresponds to a number of DMRS (Demodulation Reference Signal) ports associated with the PTRS.

33. The UE of claim 28, wherein a level value of PTRS power boosting corresponds to an energy per resource element (EPRE) ratio between the PTRS and a physical downlink shared channel (PDSCH).