RESOURCE MANAGEMENT IN A WIRELESS COMMUNICATION NETWORK

• US 20090022234A1
• Filed: 03/24/2008
• Published: 01/22/2009
• Est. Priority Date: 05/19/2006
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lee, Suk Woo, Yoon, Young Cheul, Kwon, Soon Yil, Sun, Li-Hsiang, Wang, Shu, Kim, Ho Bin, Yi, Byung Kwan, Kim, Sang Gook
• Granted Patent: US 7,826,548 B2
• Time in Patent Office: Days
• US Class Current: 375/260
• CPC Class Codes: H04L 27/2604 Multiresolution systems by means of multiresolution subcarriers H04L27/183, H04L27/3488
• CPC Class Codes: H04L 27/3488 Multiresolution systems
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/0021 in which codes are applied as a frequency-domain sequences, e.g. MC-CDMA
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0092 Indication of how the channel is divided

Abstract

A method of transmitting more than one signal in a wireless communication system is provided. The method comprises allocating multiple symbols to a first signal constellation and a second signal constellation, wherein the first signal constellation refers to base layer signals and the second signal constellation refers to enhancement layer signals; modulating the multiple symbols of the first signal constellation and the second signal constellation; and transmitting the modulated symbols, wherein configuration information used for modulating the multiple symbols is provided in a control message.

Claims

1. A method of transmitting more than one signal in a wireless communication system, the method comprising:

allocating multiple symbols to a first layer signal constellation and a second layer signal constellation, wherein the first layer signal constellation refers to base layer signals and the second layer signal constellation refers to enhancement layer signals;

modulating the multiple symbols of the first layer signal constellation and the second layer signal constellation; and

transmitting the modulated symbols,

wherein configuration information used for modulating the multiple symbols is provided in a control message.

2. The method of claim 1, wherein the control message is transmitted over a control channel.

3. The method of claim 1, wherein the configuration information comprises data indicating that modulation of the multiple symbols is enhanced.

4. The method of claim 1, wherein the configuration information comprises data indicating whether a rotation angle used for modulating the multiple symbols is included in the control message.

5. The method of claim 4, wherein when the configuration information comprises data that indicates that the rotation angle is included in the control message, modulation of the multiple symbols is enhanced according to the rotation angle.

6. The method of claim 1, wherein a rotation angle used for modulating the multiple symbols is included in the control message.

7. The method of claim 6, wherein the rotation angle indicates the degree by which initial reference phase for the enhancement layer signals is modulated.

20. The method of claim 1, wherein the control message comprises:

a modulation segment used for indicating how the first and second layer signal constellations are modulated and scaled; and

a modulation segment used for indicating how the second layer signal constellation is enhanced.

8. A method of notifying a receiver of modulating data in a wireless communication network, the method comprising:

transmitting over a control channel a control message including configuration information about modulating multiple symbols included in the control message,

wherein said multiple symbols are allocated to a first signal constellation and to a second signal constellation, wherein the first signal constellation refers to base layer signals and the second signal constellation refers to enhancement layer signals;

wherein the multiple symbols of the first signal constellation and the second signal constellation are modulated based on said configuration information.

9. The method of claim 8, wherein the configuration information comprises data indicating whether a rotation angle used for modulating the multiple symbols is included in the control message.

10. The method of claim 8, wherein a rotation angle used for modulating the multiple symbols is included in the control message.

11. A system of transmitting more than one signal in a wireless communication system, the system comprising:

logic unit for allocating multiple symbols to a first layer signal constellation and a second layer signal constellation, wherein the first signal constellation refers to base layer signals and the second signal constellation refers to enhancement layer signals;

logic unit for modulating the multiple symbols of the first layer signal constellation and the second layer signal constellation; and

logic unit for transmitting the modulated symbols,

wherein configuration information used for modulating the multiple symbols is provided in a control message.

12. The system of claim 11, where in the control message is transmitted over a control channel.

13. The system of claim 11, wherein the configuration information comprises data indicating that modulation of the multiple symbols is enhanced.

14. The system of claim 11, wherein the configuration information comprises data indicating whether a rotation angle used for modulating the multiple symbols is included in the control message.

15. The system of claim 14, wherein when the configuration information comprises data that indicates that the rotation angle is included in the control message, modulation of the multiple symbols is enhanced according to the rotation angle.

16. The system of claim 11, wherein a rotation angle used for modulating the multiple symbols is included in the control message.

17. The system of claim 16, wherein the rotation angle indicates the degree by which initial reference phase for the enhancement layer signals is modulated.

18. The system of claim 11, wherein the control message comprises a modulation segment used for indicating how the first and second layer signal constellations are modulated and scaled.

19. The system of claim 11, wherein the control message comprises a modulation segment used for indicating how the second layer signal constellation is enhanced.