Method for transmitting band bitmap in wireless communication system

• US 8,509,209 B2
• Filed: 04/16/2009
• Issued: 08/13/2013
• Est. Priority Date: 04/28/2008
• Status: Expired due to Fees

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Chun, Jin Young, Lee, Moon Il, Lee, Wook Bong, Ihm, Bin Chul
• Primary Examiner(s): Elliott, IV, Benjamin H
• Application Number:
  US12/936,902
• Publication Number:
  US 20110032878A1
• Time in Patent Office: 1,580 Days
• Field of Search: 370/252, 370/310, 370/328, 370/329, 370/343, 370/346, 370/431, 370/437, 370/464, 370/465, 370/480, 370/496, 455/67, 455/68, 455/69, 455/11
• US Class Current: 370/343
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04L 1/0028 Formatting
• CPC Class Codes: H04L 1/0029 Reduction of the amount of signalling, e.g. retention of useful signalling or differential signalling power control H04W52/04
• CPC Class Codes: H04L 1/1607 Details of the supervisory signal
• CPC Class Codes: H04L 5/003 Arrangements for allocating sub-channels of the transmission path

Abstract

A method for transmitting a band bitmap in a wireless communication system is provided. The method includes selecting at least one selection band from a plurality of bands, the plurality of bands being distributed throughout a whole frequency band, grouping the plurality of bands into a plurality of band groups, setting a primary bitmap for each band group according to whether the selection band is included in each band group and setting a secondary bitmap for bands in each band group, and transmitting the primary bitmap and the secondary bitmap. Radio resources used to transmit a band bitmap can be reduced by decreasing the number of bits of the band bitmap.

Claims

1. A method for transmitting a band bitmap in a wireless communication system, the method comprising:

selecting at least one selection band from a plurality of bands, the plurality of bands being distributed throughout a whole frequency band;

grouping the plurality of bands into a plurality of band groups;

setting a primary bitmap for each of the plurality of band groups according to whether the at least one selection band is included in each of the plurality of band groups;

setting a secondary bitmap only for at least one selection band group including the at least one selection band according to a position of the at least one selection band in the at least one selection band group; and

transmitting the primary bitmap and the secondary bitmap.

2. The method of claim 1, wherein the each of the plurality of band groups includes two consecutive bands among the plurality of bands.

3. The method of claim 1, wherein the at least one selection band is selected by considering a channel condition.

4. The method of claim 1, wherein a bit of the primary bitmap for each of the plurality of band groups is set to ‘

1’

if the at least one selection band is included in each of the plurality of band groups, and

wherein a bit of the primary bitmap for each of the plurality of band groups is set to ‘

0’

if the at least one selection band is not included in each of the plurality of band groups.

5. The method of claim 1,

wherein a bit of the secondary bitmap for each of the at least one selection band group is set to ‘

1’

if the at least one selection band is located in an posterior position in each of the at least one selection band group, and

wherein a bit of the secondary bitmap for each of the at least one selection band group is set to ‘

0’

if the at least one selection band is located in an anterior position in each of the at least one selection band group.

6. The method of claim 1, wherein the primary bitmap is transmitted on a primary channel quality indicator channel (CQICH), and wherein the secondary bitmap is transmitted on a secondary CQICH.