METHOD AND APPARATUS FOR TRANSRECEIVING OPERATING CHANNEL INFORMATION IN WIRELESS COMMUNICATION SYSTEM

• US 20150139115A1
• Filed: 10/16/2012
• Published: 05/21/2015
• Est. Priority Date: 07/09/2012
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Seok, Yongho
• Granted Patent: US 9,516,647 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04W 16/14 Spectrum sharing arrangements between different networks
• CPC Class Codes: H04W 28/20 Negotiating bandwidth
• 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 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 74/002 Transmission of channel access control information

Abstract

The present invention relates to a wireless communication system, and more specifically, disclosed are a method and an apparatus for transreceiving operating channel information. A method for providing an operating parameter of a station, which operates in a whitespace band, according to the present invention, comprises the steps of: transmitting a frame comprising an operation information field including a channel width subfield; and transmitting a signal (SIG) field of a physical layer convergence procedure (PLCP) protocol data unit (PPDU) preamble, wherein the SIG field comprises a bandwidth (BW) field, and wherein the type of the PPDU can be determined on the basis of the channel width subfield and the BW field.

Claims

1. A method for providing operation parameters for a station operating in whitespace band, the method comprising:

transmitting a frame including an operation information field, the operation information field including a channel width subfield; and

transmitting a SIG (signal) field in a preamble of a PPDU (PLCP (Physical layer convergence procedure) Protocol Data Unit);

wherein the SIG field includes a BW (bandwidth) field, and

wherein a PPDU type is determined based on the channel width subfield and the BW field.

2. The method according to claim 1,

wherein a value of the channel width subfield indicates:

a first type operating channel width for one W channel;

a second type operating channel width for two contiguous W channels;

a third type operating channel width for two non-contiguous W channels;

a fourth type operating channel width for four contiguous W channels;

or

a fifth type operating channel width for two non-contiguous frequency blocks whereby each frequency block is comprised of two contiguous W channels,

wherein the W channel refers to a basic channel unit.

3. The method according to claim 2,

wherein the PPDU type corresponds to one frequency segment, if the value of the channel width subfield indicates the first type operating channel width and if the BW field has a first value.

4. The method according to claim 3,

wherein the PPDU type corresponds to one frequency segment, if the value of the channel width subfield indicates the second type operating channel width and if the BW field has the first value, and

wherein the PPDU type corresponds to two contiguous frequency segments, if the value of the channel width subfield indicates the second type operating channel width and if the BW field has a second value.

5. The method according to claim 4,

wherein the PPDU type corresponds to one frequency segment, if the value of the channel width subfield indicates the third type operating channel width and if the BW field has the first value, and

wherein the PPDU type corresponds to two non-contiguous frequency segments, if the value of the channel width subfield indicates the third type operating channel width and if the BW field has the second value.

6. The method according to claim 5,

wherein the PPDU type corresponds to one frequency segment, if the value of the channel width subfield indicates the fourth type operating channel width and if the BW field has the first value,

wherein the PPDU type corresponds to two contiguous frequency segments, if the value of the channel width subfield indicates the fourth type operating channel width and if the BW field has the second value, and

wherein the PPDU type corresponds to four contiguous frequency segments, if the value of the channel width subfield indicates the fourth type operating channel width and if the BW field has a third value.

7. The method according to claim 6,

wherein the PPDU type corresponds to one frequency segment, if the value of the channel width subfield indicates the fifth type operating channel width and if the BW field has the first value,

wherein the PPDU type corresponds to two contiguous frequency segments, if the value of the channel width subfield indicates the fifth type operating channel width and if the BW field has the second value, and

wherein the PPDU type corresponds to two non-contiguous frequency units whereby each frequency unit is comprised of two contiguous frequency segments, if the value of the channel width subfield indicates the fifth type operating channel width and if the BW field has the third value.

8. The method according to claim 2,

wherein the PPDU type corresponds to one frequency segment if the BW field has a first value and if the value of the channel width subfield indicates one of the first, second, third, fourth or fifth type operating channel width.

9. The method according to claim 2,

wherein the PPDU type corresponds to two contiguous frequency segments if the BW field has a second value and if the value of the channel width subfield indicates one of the second, fourth or fifth type operating channel width.

10. The method according to claim 2,

wherein the PPDU type corresponds to two non-contiguous frequency segments if the BW field has a second value and if the value of the channel width subfield indicates the third type operating channel width.

11. The method according to claim 2,

wherein the PPDU type corresponds to four contiguous frequency segments if the BW field has a third value and if the value of the channel width subfield indicates the fourth type operating channel width.

12. The method according to claim 2,

wherein the PPDU type corresponds to two non-contiguous frequency units whereby each frequency unit is comprised of two contiguous frequency segments, if the BW field has a third value and if the value of the channel width subfield indicates the fifth type operating channel width.

13. A method for receiving operation parameters for a station operating in unlicensed spectrum, the method comprising:

receiving a frame including an operation information field, the operation information field including a channel width subfield; and

receiving a SIG (signal) field in a preamble of a PPDU (PLCP Protocol Data Unit);

wherein the SIG field includes a BW (bandwidth) field, and

wherein a PPDU type is determined based on the channel width subfield and the BW field.

14. An apparatus for providing operation parameters for a station operating in unlicensed spectrum, the station comprising:

a transceiver configured to perform transmission and reception with another device; and

a processor configured to control the apparatus including the transceiver, wherein the processor is further configured to transmit a frame including an operation information field, the operation information field including a channel width subfield, and transmit a SIG (signal) field in a preamble of a PPDU (PLCP Protocol Data Unit), using the transceiver;

wherein the SIG field includes a BW (bandwidth) field, and

wherein a PPDU type is determined based on the channel width subfield and the BW field.

15. An apparatus for receiving operation parameters for a station operating in unlicensed spectrum, the station comprising:

a transceiver configured to perform transmission and reception with another device; and

a processor configured to control the apparatus including the transceiver, wherein the processor is further configured to receive a frame including an operation information field, the operation information field including a channel width subfield, and receive a SIG (signal) field in a preamble of a PPDU (PLCP Protocol Data Unit), using the transceiver;

wherein the SIG field includes a BW (bandwidth) field, and

wherein a PPDU type is determined based on the channel width subfield and the BW field.