Method of transmitting uplink control information in wireless communication system supporting change of usage of radio resource and apparatus therefor

• US 9,967,829 B2
• Filed: 05/02/2017
• Issued: 05/08/2018
• Est. Priority Date: 04/08/2014
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lee, Seungmin, Seo, Hanbyul, Yang, Suckchel, Seo, Inkwon, Chae, Hyukjin
• Primary Examiner(s): Nguyen, Brian D
• Application Number:
  US15/584,880
• Publication Number:
  US 20170238263A1
• Time in Patent Office: 371 Days
• CPC Class Codes: H04L 5/0091 Signaling for the administration of the divided path
• CPC Class Codes: H04L 5/14 Two-way operation using the same type of signal, i.e. duplex
• CPC Class Codes: H04W 24/08 Testing, supervising or monitoring using real traffic
• CPC Class Codes: H04W 40/246 Connectivity information discovery
• CPC Class Codes: H04W 48/14 using user query or user detection
• CPC Class Codes: H04W 52/146 Uplink power control
• CPC Class Codes: H04W 52/16 Deriving transmission power values from another channel
• CPC Class Codes: H04W 52/243 taking into account interferences
• CPC Class Codes: H04W 52/325 Power control of control or pilot channels
• CPC Class Codes: H04W 52/36 with a discrete range or set of values, e.g. step size, ramping or offsets
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network

Abstract

The present invention relates to a method of transmitting uplink control information (UCI), which is transmitted by a user equipment in a wireless communication system. In particular, the method includes the steps of receiving first offset information associated with uplink control information (UCI) transmission in uplink subframes according to uplink-downlink configuration of a serving cell and receiving a power control parameter configuring a first uplink power control subframe set and a second uplink power control subframe set for the uplink subframes. In this case, the first uplink power control subframe set and the second uplink power control subframe set are configured to be independently applied by an offset for transmitting the uplink control information.

Claims

1. A method of transmitting uplink control information (UCI) in a wireless communication system configured for carrier aggregation of a serving cell configured with a first type and a second type uplink power control subframe set and another cell not configured with uplink power control subframe sets, the method performed by a user equipment (UE) and comprising:

receiving, from the serving cell configured with the first type and the second type uplink power control subframe set, a first type of UCI transmission beta offset and a second type of UCI transmission beta offset for a plurality of UCI transmission subframes;

determining a UCI transmission subframe uplink power for the plurality of UCI transmission subframes based on a corresponding one of the first type of beta offset or the second type of the beta offset; and

transmitting the UCI based on the determined UCI transmission subframe uplink power,

wherein the transmitting comprises;

if a UCI transmission subframe of the plurality of UCI transmission subframes belongs to the first type uplink power control subframe set, the UCI is transmitted to the serving cell and the another cell with an uplink power that is only based on the first type of beta offset, and

if a UCI transmission subframe of the plurality of UCI transmission subframes belongs to the second type uplink power control subframe set, the UCI is transmitted to the serving cell with an uplink power that is only based on the second type of beta offset.

2. The method of claim 1, wherein the first type uplink power control subframe set and the second type uplink power control subframe set are configured by RRC (Radio Resource Control) signaling.

3. The method of claim 1,

wherein the first type of UCI transmission beta offset is one of a first UCI transmission beta offset ACK (acknowledgement), a first UCI transmission beta offset RI (rank indicator) and a first UCI transmission beta offset CQI (Channel Quality Indicator), and

wherein the second type of UCI transmission beta offset value is one of a second UCI transmission beta offset ACK, a second UCI transmission beta offset RI and a second UCI transmission beta offset CQI.

4. The method of claim 1, wherein, if the UE is preconfigured with a UCI transmission beta offset for controlling the uplink power, the method further comprises:

using, by the UE, the preconfigured UCI transmission beta offset in place of the received first type of UCI transmission beta offset when determining the UCI transmission subframe uplink power.

5. A User Equipment (UE) for transmitting UCI (uplink control information) in a wireless communication system configured for carrier aggregation of a serving cell configured with a first type and a second type uplink power control subframe set and another cell not configured with uplink power control subframe sets, the UE comprising:

a radio frequency unit; and

a processor operatively connected with the radio frequency unit,

the processor is configured to;

receive, from the serving cell configured with the first type and the second type uplink power control subframe set, a first type of UCI transmission beta offset and a second type of UCI transmission beta offset for a plurality of UCI transmission subframes;

determine a UCI transmission subframe uplink power for the plurality of UCI transmission subframes based on a corresponding one of the first type of beta offset or the second type of the beta offset; and

transmit the UCI based on the determined UCI transmission subframe uplink power,

wherein, if a UCI transmission subframe of the plurality of UCI transmission subframes belongs to the first type uplink power control subframe set, the UCI is transmitted to the serving cell and the another cell with an uplink power that is only based on the first type of beta offset, and

wherein, if a UCI transmission subframe of the plurality of UCI transmission subframes belongs to the second type uplink power control subframe set, the UCI is transmitted to the serving cell with an uplink power that is only based on the second type of beta offset.

6. The UE of claim 5, wherein the first type uplink power control subframe set and the second type uplink power control subframe set are configured by RRC (Radio Resource Control) signaling.

7. The UE of claim 5,

wherein the first type of UCI transmission beta offset is one of a first UCI transmission beta offset ACK (acknowledgement), a first UCI transmission beta offset RI (rank indicator) and a first UCI transmission beta offset CQI (Channel Quality Indicator), and

wherein the second type of UCI transmission beta offset value is one of a second UCI transmission beta offset ACK, a second UCI transmission beta offset RI and a second UCI transmission beta offset CQI.

8. The UE of claim 5, wherein, if the UE is preconfigured with a UCI transmission beta offset for controlling the uplink power, the processor is further configured to use the preconfigured UCI transmission beta offset in place of the received first type of UCI transmission beta offset when determining the UCI transmission subframe uplink power.