Method for transmitting and receiving signal in wireless LAN system and device for same
A method for receiving a signal by a station in a wireless LAN system, according to an embodiment of the present invention, comprises the steps of: receiving one of a plurality of per channel SIG-Bs, comprised in a SIG-B field, via a first channel among the transmission bandwidth of a multi-user (MU) frame comprising SIG-B field and data; and receiving the data of the MU frame on a second channel differing from the first channel via which the per channel SIG-Bs have been received. Although any one of the plurality of per channel SIG-Bs is transmitted on the second channel, the data of the MU frame is received by means of the per channel SIG-Bs that are transmitted on the first channel instead of the per channel SIG-Bs that are transmitted on the second channel.
1. A method for receiving a signal by a station (STA) in a wireless local area network (LAN) system, the method comprising:
receiving a SIG-B field, via a first channel among a transmission bandwidth of a multi-user (MU) frame including data and the SIG-B field,
wherein the SIG-B field comprises a plurality of resource allocation information comprising (i) first resource allocation information for the first channel and (ii) second resource allocation information for each of at least one paired channel which the first channel is paired with,
wherein the first resource allocation information and the second resource allocation information for each of the at least one paired channel comprise a resource allocation pattern for a corresponding channel, respectively; and
receiving the data of the MU frame via (i) one of the at least one paired channel and (ii) a resource in the one of the at least one paired channel,
wherein, (i) the one of the at least one paired channel and (ii) the resource in the one of the at least one paired channel are determined based on a mapping between (i) the plurality of resource allocation information and (ii) an order of user-specific information for the STA among a plurality of user-specific information included in the SIG-B field.
2. The method of claim 1 , wherein the first resource allocation information and the second resource allocation information for each of the at least one paired channel are included in the plurality of resource allocation information based on an order of the first channel and the at least one paired channel.
3. The method of claim 1 , wherein the first channel and the at least one paired channel are configured to have an interval with 20 MHz.
4. The method of claim 3 , wherein a bandwidth of the first channel is 20 MHz, and
wherein a bandwidth of the one of the at least one paired channel is 20 MHz.
5. The method of claim 1 , wherein the plurality of resource allocation information is received via the at least one paired channel additionally.
6. The method of claim 1 , wherein, based on 80 MHz transmission, the plurality of resource allocation information comprises (i) the first resource allocation for the first channel, and (ii) one of the second resource allocation information for one paired channel which the first channel is paired with, and
wherein, based on 160 MHz transmission, the plurality of resource allocation information comprises (i) the first resource allocation for the first channel, and (ii) three of the second resource allocation information for three paired channels which the first channel is paired with.
7. The method of claim 1 , wherein the SIG-B field comprises a common field and a user-specific field,
wherein the plurality of resource allocation information is included in the common field,
wherein the plurality of user-specific information is included in the user-specific field, and
wherein the plurality of user-specific information is encoded in a unit of 2 users in one or more non-final blocks and remaining of the plurality of user-specific information is encoded in a unit of 1 or 2 users in a final block.
8. A station (STA) in a wireless local area network (LAN) system, the STA comprising:
a receiver; and
a processor operably coupled with the receiver and configured to:
receive a SIG-B field, via a first channel among a transmission bandwidth of a multi-user (MU) frame including data and the SIG-B field,
wherein the SIG-B field comprises a plurality of resource allocation information comprising (i) first resource allocation information for the first channel and (ii) second resource allocation information for each of at least one paired channel which the first channel is paired with,
wherein the first resource allocation information and the second resource allocation information for each of the at least one paired channel comprise a resource allocation pattern for a corresponding channel, respectively; and
receive the data of the MU frame via (i) one or the at least one paired channel and (ii) a resource in the one of the at least one paired channel,
wherein, (i) the one of the at least one paired channel and (ii) the resource in the one of the at least one paired channel are determined based on a mapping between (i) the plurality of resource allocation information and (ii) an order of user-specific information for the STA among a plurality of user-specific information included in the SIG-B field.
9. The STA of claim 8 , wherein, based on 80 MHz transmission, the plurality of resource allocation information comprises (i) the first resource allocation for the first channel, and (ii) one of the second resource allocation information for one paired channel which the first channel is paired with, and
wherein, based on 160 MHz transmission, the plurality of resource allocation information comprises (i) the first resource allocation for the first channel, and (ii) three of the second resource allocation information for three paired channels which the first channel is paired with.
10. The STA of claim 8 , wherein the SIG-B field comprises a common field and a user-specific field,
wherein the plurality of resource allocation information is included in the common field,
wherein the plurality of user-specific information is included in the user-specific field, and
wherein the plurality of user-specific information is encoded in a unit of 2 users in one or more non-final block and remaining of the plurality of user-specific information is encoded in a unit of 1 or 2 users in final block.
11. A method for transmitting a signal by an access point (AP) in a wireless local area network (LAN) system, the method comprising:
transmitting a SIG-B field, via a first channel among a transmission bandwidth of a multi-user (MU) frame including data for a station (STA) and the SIG-B field,
wherein the SIG-B field comprises a plurality of resource allocation information comprising (i) first resource allocation information for the first channel (ii) second resource allocation information for each of and at least one paired channel which the first channel is paired with,
wherein the first resource allocation information and the second resource allocation information for each of the at least one paired channel comprise a resource allocation pattern for corresponding channel, respectively; and
transmitting the data of the station via (i) one of the at least one paired channel and (ii) a resource in the one of the at least one paired channel,
wherein, (i) the one of the at least one paired channel and (ii) the resource in the one of the at least one paired channel are determined based on a mapping between (i) the plurality of resource allocation information and (ii) an order of user-specific information for the STA among a plurality of user-specific information included in the SIG-B field.
12. The method of claim 11 , wherein the first resource allocation information and the second resource allocation information for each of the at least one paired channel are included in the plurality of resource allocation information based on an order of the first channel and the at least one paired channel.
13. The method of claim 11 , wherein the first channel and the at least one paired channel are configured to have an interval with 20 MHz.
14. The method of claim 13 , wherein a bandwidth of the first channel is 20 MHz, and
wherein a bandwidth of the one of the at least one paired channel is 20 MHz.
15. The method of claim 11 , wherein the plurality of resource allocation information is received via the at least one paired channel additionally.
16. The method of claim 11 , wherein, based on 80 MHz transmission, the plurality of resource allocation information comprises (i) the first resource allocation for the first channel, and (ii) one of the second resource allocation information for one paired channel which the first channel is paired with, and
wherein, based on 160 MHz transmission, the plurality of resource allocation information comprises (i) the first resource allocation for the first channel, and (ii) three of the second resource allocation information for three paired channels which the first channel is paired with.
17. The method of claim 11 , wherein the SIG-B field comprises a common field and a user-specific field,
wherein the plurality of resource allocation information is included in the common field,
wherein the plurality of user-specific information is included in the user-specific field, and
wherein the plurality of user-specific information is encoded in a unit of 2 users in one or more non-final blocks and remaining of the plurality of user-specific information is encoded in a unit of 1 or 2 users in a final block.