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

• US 9,491,648 B2
• Filed: 07/21/2010
• Issued: 11/08/2016
• 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): Pasia, Redentor
• Assistant Examiner(s): MAK, PETER K
• Application Number:
  US13/386,020
• Publication Number:
  US 20120134275A1
• Time in Patent Office: 2,302 Days
• Field of Search: 370/255, 370294-295, 370/312, 370/329, 370/335, 370/341, 370/422
• US Class Current: 1/1
• 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 of transmitting channel state information (CSI) reporting at a user equipment (UE) in a wireless communication system, wherein when a first periodic CSI reporting is configured for a primary component carrier, a second periodic CSI reporting is configured for a secondary component carrier and the first periodic CSI reporting for the primary component carrier overlaps with the second periodic CSI reporting for the secondary component carrier in a given time interval, the secondary component carrier having a lower priority than the primary component carrier with respect to CSI reports of different component carriers, the method comprising:

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

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

2. The method of claim 1, wherein the given time interval is configured as a unit of a subframe.

3. The method of claim 1, wherein information related to priorities of the primary component carrier and the secondary component carrier is received through a higher layer signaling from the eNB.

4. A user equipment (UE) for transmitting channel state information (CSI) reporting in a wireless communication system, wherein when a first periodic CSI reporting is configured for a primary component carrier, a second periodic CSI reporting is configured for a secondary component carrier and the first periodic CSI reporting for the primary component carrier overlaps with the second periodic CSI reporting for the secondary component carrier in a given time interval, the secondary component carrier having a lower priority than the primary component carrier with respect to CSI reports of different component carriers, the UE comprising:

a transmission module; and

a processor configured to;

cause the transmission module to transmit the first periodic CSI reporting for the primary component carrier in the given time interval to an eNode B (eNB); and

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

5. The UE of claim 4, further comprising:

a reception module,

wherein the processor is further configured to cause the reception module to receive information related to priorities of the primary component carrier and the secondary component carrier through a higher layer signaling from the eNB.

6. The UE of claim 4, wherein the given time interval is configured as a unit of a subframe.