METHOD FOR TRANSMITTING CHANNEL QUALITY INDICATOR

• US 20120134331A1
• Filed: 08/20/2010
• Published: 05/31/2012
• Est. Priority Date: 08/21/2009
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Park, Giwon, Ryu, Kiseon, Yuk, Youngsoo, Kim, Yongho, Chun, Jinyoung
• Granted Patent: US 8,638,705 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04B 7/0632 Channel quality parameters, e.g. channel quality indicator [CQI]
• CPC Class Codes: H04W 28/18 Negotiating wireless communication parameters
• CPC Class Codes: H04W 48/08 Access restriction or access information delivery, e.g. discovery data delivery signalling during connection H04W76/00

Abstract

Disclosed is a method for transmitting channel quality indicator (CQI) during a sleep mode operation. The method for transmitting CQI includes: receiving a message including a CQI-related parameter indicating a transmission of a CQI before a listening window; transmitting a CQI during a sleep window before the listening window according to a CQI-related parameter in the message; transitioning to the listening window according to a listening window-related parameter after transmitting the CQI; and waiting for receiving a message indicating whether or not there is data or traffic transferred from the base station during the listening window.

Claims

1. A method for transmitting channel quality indicator (CQI) during a sleep mode operation, the method comprising:

receiving a message including a CQI-related parameter indicating a transmission of a CQI before a listening window;

transmitting a CQI during a sleep window before the listening window according to a CQI-related parameter in the message;

transitioning to the listening window according to a listening window-related parameter after transmitting the CQI; and

waiting for receiving a message indicating whether or not there is data or traffic transferred from the base station during the listening window.

2. The method of claim 1, wherein the message is received before entering a sleep mode.

3. The method of claim 1, wherein the message is received in response to a sleep mode request message.

4. The method of claim 1, wherein the message is a downlink sleep control extended header (SCEH) received within the sleep window.

5. The method of claim 1, wherein the parameter indicates one or more of a transmission number and transmission period of a CQI before the listening window.

6. The method of claim 1, wherein the parameter indicates one or more of a frame index and period for transmitting the CQI before the listening window.

7. A data transmission method comprising:

transmitting a message including a channel quality indicator (CQI)-related parameter indicating transmission of a CQI before a listening window to a terminal;

receiving a CQI during a sleep window before the listening window from the terminal;

determining an MCS level based on the CQI received during the sleep window; and

transmitting data applied as the determined MCS level to the terminal during the listening window.

8. The method of claim 7, wherein the message is transmitted before entering a sleep mode, or transmitted in response to a sleep mode request message.

9. The method of claim 7, wherein the message is a downlink sleep control extended header (SCEH) received within the sleep window.

10. The method of claim 7, wherein the parameter indicates one or more of a transmission number and transmission period of a CQI before the listening window.

11. The method of claim 7, wherein the parameter indicates one or more of a frame index and period for transmitting the CQI before the listening window.