Method and apparatus for transmitting channel quality information in a multi-carrier wireless communication system

• US 8,472,396 B2
• Filed: 02/02/2012
• Issued: 06/25/2013
• Est. Priority Date: 09/21/2005
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Yoon, Young C., Sun, Li-Hsiang, Lee, Suk Woo
• Primary Examiner(s): Bost, Dwayne
• Assistant Examiner(s): STERNBANE, LAURENCE J
• Application Number:
  US13/365,152
• Publication Number:
  US 20120134330A1
• Time in Patent Office: 509 Days
• Field of Search: 370/329, 370/332, 455/63.1, 455/69, 455/452.2, 455/513, 455/522
• US Class Current: 370/329
• CPC Class Codes: H04L 27/2601 Multicarrier modulation systems
• CPC Class Codes: H04W 52/12 Outer and inner loops
• CPC Class Codes: H04W 52/146 Uplink power control
• CPC Class Codes: H04W 52/241 taking into account channel quality metrics, e.g. SIR, SNR, CIR, Eb/lo
• CPC Class Codes: H04W 52/247 where the output power of a terminal is based on a path parameter sent by another terminal
• CPC Class Codes: H04W 52/248 where transmission power control commands are generated based on a path parameter
• CPC Class Codes: H04W 52/267 taking into account the information rate
• CPC Class Codes: H04W 52/50 at the moment of starting communication in a multiple access environment
• CPC Class Codes: H04W 52/54 Signalisation aspects of the TPC commands, e.g. frame structure
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management
• CPC Class Codes: H04W 76/15 Setup of multiple wireless link connections
• CPC Class Codes: H04W 76/20 Manipulation of established connections
• CPC Class Codes: H04W 76/27 Transitions between radio resource control [RRC] states
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A method for communicating channel quality information in a multi-carrier wireless communication system is provided. The method includes receiving information related to a link between a first forward link carrier used to receive data from a base station and a first reverse link carrier used to transmit data to the base station, receiving information related to a link between a second forward link carrier used to receive data from the base station and a second reverse link carrier used to transmit data to the base station, and transmitting channel quality information for the first forward link carrier and for the second forward link carrier to the base station via a same reverse link carrier, where the first forward link carrier and the second forward link carrier are not the same and the first reverse link carrier and the second reverse link carrier are not the same.

Claims

1. A method of transmitting channel quality information in a multi-carrier wireless communication system, the method performed by a mobile station (MS) and comprising:

receiving information related to a link between a first forward link carrier and a first reverse link carrier, wherein the first forward link carrier is used to receive data from a base station (BS) and the first reverse link carrier is used to transmit data to the BS;

receiving information related to a link between a second forward link carrier and a second reverse link carrier, wherein the second forward link carrier is used to receive data from the BS and the second reverse link carrier is used to transmit data to the BS;

transmitting channel quality information for the first forward link carrier of the BS; and

transmitting channel quality information for the second forward link carrier of the BS,

wherein the channel quality information for the first forward link carrier and the channel quality information for the second forward link carrier are transmitted to the BS via a same reverse link carrier,

wherein the first forward link carrier and the second forward link carrier are not the same, and

wherein the first reverse link carrier and the second reverse link carrier are not the same.

2. The method of claim 1, further comprising receiving power control information for the first and second reverse link carriers, wherein the power control information is determined in consideration of the channel quality information for the first forward link carrier and the channel quality information for the second forward link carrier.

3. The method of claim 1, further comprising:

receiving a notification signal via the first forward link carrier, wherein the notification signal is related to acquisition of the second reverse link carrier.

4. A method of receiving channel quality information in a multi-carrier wireless communication system, the method performed by a base station (BS) and comprising:

transmitting information related to a link between a first forward link carrier and a first reverse link carrier, wherein the first forward link carrier is used to transmit data from the BS and the first reverse link carrier is used to receive data at the BS;

transmitting information related to a link between a second forward link carrier and a second reverse link carrier, wherein the second forward link carrier is used to transmit data from the BS and the second reverse link carrier is used to receive data at the BS;

receiving channel quality information for the first forward link carrier of the BS; and

receiving channel quality information for the second forward link carrier of the BS,

wherein the channel quality information for the first forward link carrier and the channel quality information for the second forward link carrier are received via a same reverse link carrier,

wherein the first forward link carrier and the second forward link carrier are not the same, and

wherein the first reverse link carrier and the second reverse link carrier are not the same.

5. The method of claim 4, further comprising transmitting power control information for the first and second reverse link carriers, wherein the power control information is determined in consideration of the channel quality information for the first forward link carrier and the channel quality information for the second forward link carrier.

6. The method of claim 4, further comprising:

transmitting a notification signal via the first forward link carrier, wherein the notification signal is related to acquisition of the second reverse link carrier.

7. A mobile terminal for transmitting channel quality information in a multi-carrier wireless communication system, the mobile terminal comprising:

a transmitting/receiving unit configured to transmit data and receive data;

a display unit configured to display user interface information;

an input unit configured to input user data; and

a processing unit configured to receive information related to a link between a first forward link carrier and a first reverse link carrier, to receive information related to a link between a second forward link carrier and a second reverse link carrier, to transmit channel quality information for the first forward link carrier of a base station (BS) and to transmit channel quality information for the second forward link carrier of the BS,

wherein the first forward link carrier is used to receive data from the BS and the first reverse link carrier is used to transmit data to the BS,

wherein the second forward link carrier is used to receive data from the BS and the second reverse link carrier is used to transmit data to the BS,

wherein the channel quality information for the first forward link carrier and the channel quality information for the second forward link carrier are transmitted to the BS via a same reverse link carrier,

wherein the first forward link carrier and the second forward link carrier are not the same, and

wherein the first reverse link carrier and the second reverse link carrier are not the same.

8. The mobile terminal of claim 7, wherein the processing unit is further configured to receive power control information for the first and second reverse link carriers, the power control information being determined in consideration of the channel quality information for the first forward link carrier and the channel quality information for the second forward link carrier.

9. The mobile terminal of claim 7, wherein the processing unit is further configured to receive a notification signal via the first forward link carrier, wherein the notification signal is related to acquisition of the second reverse link carrier.

10. A base station (BS) for receiving channel quality information in a multi-carrier wireless communication system, the base station comprising:

a transmitter configured to transmit data;

a receiver configured to receive data; and

a controller configured to transmit information related to a link between a first forward link carrier and a first reverse link carrier, to transmit information related to a link between a second forward link carrier and a second reverse link carrier, to receive channel quality information for the first forward link carrier of the BS and to receive channel quality information for the second forward link carrier of the BS,

wherein the first forward link carrier is used to transmit data from the BS and the first reverse link carrier is used to receive data at the BS,

wherein the second forward link carrier is used to transmit data from the BS and the second reverse link carrier is used to receive data at the BS,

wherein the channel quality information for the first forward link carrier and the channel quality information for the second forward link carrier are received via a same reverse link carrier,

wherein the first forward link carrier and the second forward link carrier are not the same, and

wherein the first reverse link carrier and the second reverse link carrier are not the same.

11. The base station of claim 10, wherein the controller is further configured to transmit power control information for the first and second reverse link carriers, the power control information being determined in consideration of the channel quality information for the first forward link carrier and the channel quality information for the second forward link carrier.

12. The base station of claim 10, the controller is further configured to transmit a notification signal via the first forward link carrier, wherein the notification signal is related to acquisition of the second reverse link carrier.