METHOD OF TRANSMITTING INFORMATION FOR SUPPORTING LEGACY SYSTEM AND MULTI-CARRIER SYSTEM

• US 20110002320A1
• Filed: 03/03/2009
• Published: 01/06/2011
• Est. Priority Date: 03/03/2008
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Yuk, Young Soo, Kim, Jeong Ki, Ryu, Ki Seon
• Granted Patent: US 8,411,620 B2
• Time in Patent Office: Days
• US Class Current: 370/338
• CPC Class Codes: H04W 48/08 Access restriction or access information delivery, e.g. discovery data delivery signalling during connection H04W76/00
• CPC Class Codes: H04W 72/04 Wireless resource allocation

Abstract

A method for transmitting information that supports a legacy system and a multi-carrier system is disclosed. The method for transmitting information supporting a legacy system includes constructing a frame structure for supporting the legacy system, and transmitting a frame header including allocation information of the frame structure to a mobile station.

Claims

1. A method for transmitting information supporting a legacy system, the method comprising:

constructing a frame structure for supporting the legacy system; and

transmitting a frame header including allocation information of the frame structure to a mobile station.

2. The method according to claim 1, wherein the allocation information is transmitted to the mobile station via a broadcast channel (BCH) of the frame header.

3. The method according to claim 2, wherein the allocation information includes:

a first indicator for indicating whether a base station supports the legacy system;

first information for indicating a ratio of first sub-frames supporting the legacy system among downlink and uplink sub-frames; and

bandwidth information of the first sub-frames.

4. The method according to claim 3, wherein the first information is information of a ratio between the first sub-frames and second sub-frames at each of the downlink and uplink sub-frames, wherein the second sub-frames are not supporting the legacy system.

5. The method according to claim 3, wherein the first information is information of a ratio between the first sub-frames and second sub-frames among sub-frames contained in a super-frame, wherein the second sub-frames are not supporting the legacy system.

6. The method according to claim 3, wherein the allocation information further includes:

a second indicator for indicating multiplexing information of uplink sub-frames from among the first sub-frames; and

second information about a center frequency of the first sub-frames.

7. The method according to claim 6, wherein:

the second indicator indicates that the uplink sub-frames from among the first sub-frames is multiplexed using at least one of a Time Division Multiplexing (TDM) scheme and a Frequency Division Multiplexing (FDM) scheme, and

the center frequency is represented by a relative value on the basis of a center frequency of a current carrier.

8. The method according to claim 7, wherein the relative value is represented in the form of position information.

9. The method according to claim 7, wherein the relative value is represented in the form of frequency offset information.

10. The method according to claim 7, wherein the allocation information further includes third information indicating the number of uplink resource blocks allocated to the first sub-frames, if the second indicator indicates that the uplink sub-frames from among the first sub-frames are multiplexed using the Frequency Division Multiplexing (FDM) scheme.

11. The method according to claim 2, wherein a region of the broadcast channel (BCH) includes a primary BCH (PBCH) and a secondary BCH (SBCH), and

the allocation information is transmitted to the mobile station through one of the PBCH and the SBCH.

12. The method according to claim 1, wherein the allocation information is contained in a system information transfer message, and is transmitted to the mobile station.

13. The method according to claim 1, wherein:

the frame structure is a super-frame structure, and

the frame header is a super-frame header (SFH).

14. A method for receiving information supporting a legacy system, the method comprising:

receiving a frame header including allocation information of a frame supporting the legacy system from a base station; and

receiving a control message through a region supporting the legacy system indicated by the frame header,

wherein the allocation information is transmitted through a secondary broadcast channel (SBCH) contained in the frame header.