Apparatus and method for transmitting channel state information in a wireless communication system

• US 10,397,818 B2
• Filed: 10/05/2016
• Issued: 08/27/2019
• Est. Priority Date: 07/21/2009
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Choi, Young Seob, Kim, Hak Seong, Seo, Han Byul, Kim, Ki Jun, Lee, Dae Won
• Primary Examiner(s): Cho, Un C
• Assistant Examiner(s): Mak, Peter K
• Application Number:
  US15/286,488
• Publication Number:
  US 20170094548A1
• Time in Patent Office: 1,056 Days
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04L 25/0202 Channel estimation
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0057 Physical resource allocation for CQI
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 28/04 Error control
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network

Abstract

An apparatus and method for transmitting channel state information in a wireless communication system are disclosed. The UE apparatus for transmitting channel state information includes a channel state measurement module for measuring a channel state based on a level of interference received from a neighbor cell, a channel state information generation module for generating channel state information for a plurality of resource regions or for periodic and aperiodic channel state information reporting modes using the measured channel state and offsets received from a serving BS, the offsets being set for the plurality of resource regions or the periodic and aperiodic channel state information reporting modes, and a transmission module for transmitting the generated channel state information to the serving BS.

Claims

1. A method for transmitting channel state information (CSI) reporting by a user equipment in a wireless communication system, the method comprising:

when a first periodic CSI reporting for a primary component carrier occurs simultaneously with a second periodic CSI reporting for a secondary component carrier in a time interval,

transmitting the first periodic CSI reporting for the primary component carrier to an eNode B in the time interval; and

discarding the second periodic CSI reporting for the secondary component carrier in the time interval.

2. The method of claim 1, wherein the first periodic CSI reporting for the primary component carrier is transmitted on a physical uplink control channel (PUCCH).

3. The method of claim 1, wherein the secondary component carrier has a lower priority than the primary component carrier with respect to periodic CSI reports of different component carriers.

4. The method of claim 1, further comprising:

receiving information related to priorities of the primary component carrier and the secondary component carrier through a higher layer signaling from the eNode B.

5. A user equipment for transmitting channel state information (CSI) reporting in a wireless communication system, the user equipment comprising:

a transmitter; and

a processor,

wherein the processor is configured to;

when a first periodic CSI reporting for a primary component carrier occurs simultaneously with a second periodic CSI reporting for a secondary component carrier in a time interval,

control the transmitter to transmit the first periodic CSI reporting for the primary component carrier to an eNode B in the time interval; and

discard the second periodic CSI reporting for the secondary component carrier in the time interval.

6. The user equipment of claim 5, wherein the first periodic CSI reporting for the primary component carrier is transmitted on a physical uplink control channel (PUCCH).

7. The user equipment of claim 5, wherein the secondary component carrier has a lower priority than the primary component carrier with respect to periodic CSI reports of different component carriers.

8. The user equipment of claim 5, further comprising a receiver, wherein the processor is further configured to control the receiver to receive information related to priorities of the primary component carrier and the secondary component carrier through a higher layer signaling from the eNode B.