Method and apparatus for uplink transmission and reception in a wireless communication system

Patent metadata

Field	Value
Publication number	US-10439847-B2
Application number	US-201916291983-A
Country	US
Kind code	B2
Filing date	Mar 4, 2019
Priority date	May 4, 2017
Publication date	Oct 8, 2019
Grant date	Oct 8, 2019

Abstract

Disclosed are a method for transmitting and receiving an uplink in a wireless communication system and an apparatus therefore. Specifically, a method for uplink transmission by a User Equipment (UE) in a wireless communication system may include: receiving, from a base station, Sounding Reference Signal (SRS) configuration information, wherein the SRS configuration information includes a parameter set for power control of SRS for each SRS resource set and the SRS resource set includes one or more SRS resources; determining a transmission power of the SRS, based on the parameter set for power control of the SRS; and transmitting the SRS to the base station.

First claim

The invention claimed is:

1. A method for performing uplink transmission by a User Equipment (UE) in a wireless communication system, comprising:
receiving, from a base station, Sounding Reference Signal (SRS) configuration information related to SRS resources for the UE;
determining, among the SRS resources, a plurality of SRS resource set that each comprises a plurality of SRS resources;
determining, for each SRS resource set among the plurality of SRS resource sets, information regarding an SRS power control to be applied for all of the plurality of SRS resources within the SRS resource set;
determining an SRS to be transmitted to the base station, wherein the SRS is included in a first SRS resource set among the plurality of SRS resource sets;
determining a first transmission power for the SRS, based on the information regarding the SRS power control that is associated with the first SRS resource set that includes the SRS; and
transmitting the SRS to the base station using the first transmission power.

2. The method of claim 1 , wherein the information regarding the SRS power control to be applied for all of the plurality of SRS resources within the SRS resource set comprises:
a parameter set for SRS power control of each SRS resource set.

3. The method of claim 1 , wherein the information regarding the SRS power control to be applied for all of the plurality of SRS resources within the SRS resource set is related to a downlink path-loss estimate for a downlink channel.

4. The method of claim 3 , wherein downlink path-loss estimate for the downlink channel is determined by the UE based on a downlink reference signal that comprises a Synchronization Signal Block (SSB) and a Channel State Information-Reference Signal (CSI-RS).

5. The method of claim 4 , wherein the downlink reference signal is determined by a Medium Access Control-Control Element (MAC-CE) that is transmitted by the base station.

6. The method of claim 1 , wherein the information regarding the SRS power control to be applied for all of the plurality of SRS resources within the SRS resource set comprises:
information regarding an SRS power control process according to which the SRS power control is to be performed.

7. A User equipment (UE) configured to perform uplink transmission in a wireless communication system, the UE comprising:
a 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, cause the at least one processor to perform operations comprising:
receiving, from a base station, Sounding Reference Signal (SRS) configuration information related to SRS resources for the UE;
determining, for each SRS resource set among the plurality of SRS resource sets, information regarding an SRS power control to be applied for all of the plurality of SRS resources within the SRS resource set;
determining an SRS to be transmitted to the base station, wherein the SRS is included in a first SRS resource set among the plurality of SRS resource sets;
determining a first transmission power for the SRS, based on the information regarding the SRS power control that is associated with the first SRS resource set that includes the SRS; and
transmitting, to the base station through the transceiver, the SRS using the first transmission power.

8. The UE of claim 7 , wherein the information regarding the SRS power control to be applied for all of the plurality of SRS resources within the SRS resource set comprises:
a parameter set for SRS power control of each SRS resource set.

9. The UE of claim 7 , wherein the information regarding the SRS power control to be applied for all of the plurality of SRS resources within the SRS resource set is related to a downlink path-loss estimate for a downlink channel.

10. The UE of claim 9 , wherein downlink path-loss estimate for the downlink channel is determined by the UE based on a downlink reference signal that comprises a synchronization signal block (SSB) and a channel state information reference signal (CSI-RS).

11. The UE of claim 10 , wherein the downlink reference signal is determined by a medium access control (MAC) control element (CE) that is transmitted by the base station.

12. The UE of claim 7 , wherein the information regarding the SRS power control to be applied for all of the plurality of SRS resources within the SRS resource set comprises:
information regarding an SRS power control process according to which the SRS power control is to be performed.

Assignees

• Lg Electronics Inc

Inventors

• Park Jonghyun
• Kang Jiwon
• Kim Kijun
• Seo Hanbyul
• Ahn Joonkui

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

• H04L5/0057

  Physical resource allocation for CQI · CPC title

• H04L5/0051

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

• H04L5/0005

  Time-frequency · CPC title

• H04L5/0055

  Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861) · CPC title