Apparatus and method for transmitting/receiving data in communication system

• US 20130136075A1
• Filed: 10/15/2012
• Published: 05/30/2013
• Est. Priority Date: 10/13/2011
• Status: Active Grant

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: LEE, Sok-Kyu, YU, Hee-Jung, CHEONG, Min-Ho
• Granted Patent: US 9,277,555 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04L 1/0061 Error detection codes
• CPC Class Codes: H04L 1/0643 block codes
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA

Abstract

A data transmission apparatus in a communication system includes a verification unit configured to verify a basic frequency band capable of being used for transmitting and receiving data to and from a plurality of terminals, and a multi-bandwidth mode in the basic frequency band; a generation unit configured to generate data packets in the multi-bandwidth mode; and a transmission unit configured to transmit the data packets in the multi-bandwidth mode, wherein the multi-bandwidth mode includes a ½× bandwidth of the basic frequency band, a basic bandwidth, a 2× bandwidth of the basic frequency band, a 4× bandwidth of the basic frequency band and an 8× bandwidth of the basic frequency band.

Claims

1. A data transmission apparatus in a communication system, comprising:

a verification unit configured to verify a basic frequency band capable of being used for transmitting and receiving data to and from a plurality of terminals, and a multi-bandwidth mode in the basic frequency band;

a generation unit configured to generate data packets in the multi-bandwidth mode; and

a transmission unit configured to transmit the data packets in the multi-bandwidth mode,

wherein the multi-bandwidth mode includes a ½

×

bandwidth of the basic frequency band, a basic bandwidth, a 2×

bandwidth of the basic frequency band, a 4×

bandwidth of the basic frequency band and an 8×

bandwidth of the basic frequency band.

2. The data transmission apparatus of claim 1, wherein the transmission unit divides the ½

×

bandwidth, the basic bandwidth, the 2×

bandwidth, the 4×

bandwidth and the 8×

bandwidth into sub-bands, classifies the sub-bands into primary channels and secondary channels, and transmits the data packets through the primary channels and the secondary channels.

3. The data transmission apparatus of claim 1, wherein the transmission unit transmits the data packets through subcarriers of a first half band and a second half band of the basic frequency band in the basic bandwidth, in a cyclic repetitive transmission scheme or an in-symbol repetitive transmission scheme.

4. The data transmission apparatus of claim 3, wherein the transmission unit transmits an L-SIG (legacy signal field), a VHT-SIG (very high throughput signal field) and a VHT-DATA included in the data packets, in the cyclic repetitive transmission scheme or the in-symbol repetitive transmission scheme.

5. The data transmission apparatus of claim 3, wherein the transmission unit transmits the data packets through changing codes or phases of the subcarriers, in the cyclic repetitive transmission scheme or the in-symbol repetitive transmission scheme.

6. The data transmission apparatus of claim 1, wherein the transmission unit transmits the data packets through subcarriers included in one half band of the first half band and the second half band of the basic frequency band in the ½

×

bandwidth.

7. A data transmitting method in a communication system, comprising:

verifying a basic frequency band capable of being used for transmitting and receiving data to and from a plurality of terminals, and a multi-bandwidth mode in the basic frequency band;

generating data packets in the multi-bandwidth mode; and

transmitting the data packets in the multi-bandwidth mode,

wherein the multi-bandwidth mode includes a ½

×

bandwidth of the basic frequency band, a basic bandwidth, a 2×

bandwidth of the basic frequency band, a 4×

bandwidth of the basic frequency band and an 8×

bandwidth of the basic frequency band.

8. The method of claim 7, wherein said transmitting divides the ½

×

bandwidth, the basic bandwidth, the 2×

bandwidth, the 4×

bandwidth and the 8×

bandwidth into sub-bands, classifies the sub-bands into primary channels and secondary channels, and transmits the data packets through the primary channels and the secondary channels.

9. The method of claim 7, wherein said transmitting transmits the data packets through subcarriers of a first half band and a second half band of the basic frequency band in the basic bandwidth, in a cyclic repetitive transmission scheme or an in-symbol repetitive transmission scheme.

10. The method of claim 9, wherein said transmitting transmits an L-SIG (legacy signal field), a VHT-SIG (very high throughput signal field) and a VHT-DATA included in the data packets, in the cyclic repetitive transmission scheme or the in-symbol repetitive transmission scheme.

11. The method of claim 9, wherein said transmitting transmits the data packets through changing codes or phases of the subcarriers, in the cyclic repetitive transmission scheme or the in-symbol repetitive transmission scheme.

12. The method of claim 7, wherein said transmitting transmits the data packets through subcarriers included in one half band of the first half band and the second half band of the basic frequency band in the ½

×

bandwidth.

13. A data reception apparatus in a communication system, comprising:

a reception unit configured to receive data packets in a multi-bandwidth mode in a basic frequency band capable of being used for transmitting and receiving data to and from a plurality of terminals;

a verification unit configured to verify the multi-bandwidth mode from the data packets; and

a recovery unit configured to recover the data packets,

wherein the multi-bandwidth mode includes a ½

×

bandwidth of the basic frequency band, a basic bandwidth, a 2×

bandwidth of the basic frequency band, a 4×

bandwidth of the basic frequency band and an 8×

bandwidth of the basic frequency band.

14. The data reception apparatus of claim 13, wherein the reception unit receives the data packets through subcarriers of a first half band and a second half band of the basic frequency band in the basic bandwidth, in a cyclic repetitive transmission scheme or an in-symbol repetitive transmission scheme.

15. The data reception apparatus of claim 13, wherein the reception unit receives the data packets through subcarriers included in one half band of the first half band and the second half band of the basic frequency band in the ½

×

bandwidth.

16. The data reception apparatus of claim 13, wherein the verification unit verifies the multi-bandwidth mode using power of signals which are received through the subcarriers of the first half band and the second half band in the basic frequency band.

17. A data receiving method in a communication system, comprising:

receiving data packets in a multi-bandwidth mode in a basic frequency band capable of being used for transmitting and receiving data to and from a plurality of terminals;

verifying the multi-bandwidth mode from the data packets; and

recovering the data packets,

wherein the multi-bandwidth mode includes a ½

×

bandwidth of the basic frequency band, a basic bandwidth, a 2×

bandwidth of the basic frequency band, a 4×

bandwidth of the basic frequency band and an 8×

bandwidth of the basic frequency band.

18. The method of claim 17, wherein said receiving receives the data packets through subcarriers of a first half band and a second half band of the basic frequency band in the basic bandwidth, in a cyclic repetitive transmission scheme or an in-symbol repetitive transmission scheme.

19. The method of claim 17, wherein said receiving receives the data packets through subcarriers included in one half band of the first half band and the second half band of the basic frequency band in the ½

×

bandwidth.

20. The method of claim 17, wherein said verifying verifies the multi-bandwidth mode using power of signals which are received through the subcarriers of the first half band and the second half band in the basic frequency band.