Method for transmitting and receiving signal in wireless lan system and device for same

Patent metadata

Field	Value
Publication number	US-2018205584-A1
Application number	US-201515743998-A
Country	US
Kind code	A1
Filing date	Dec 4, 2015
Priority date	Jul 28, 2015
Publication date	Jul 19, 2018
Grant date	—

Abstract

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.

First claim

What is claimed is:

1 . A method for receiving a signal by a station (STA) in a wireless local area network (LAN) system, the method comprising:
receiving one of a plurality of per channel SIG-Bs included in a SIG-B field, through a first channel among a transmission bandwidth of a multi-user (MU) frame including data and the SIG-B field; and receiving the data of the MU frame on a second channel different from the first channel through which the per channel SIG-B is received, wherein although any one of the plurality of per channel SIG-Bs is transmitted on the second channel, the data of the MU frame are received using the per channel SIG-B transmitted on the first channel instead of the per channel SIG-B transmitted on the second channel.

2 . The method according to claim 1 , wherein the plurality of per channel SIG-Bs included in the SIG-B field are transmitted through channels different from each other.

3 . The method according to claim 2 , wherein a number of the plurality of per channel SIG-Bs is set differently from a number of the channels in accordance with a size of the transmission bandwidth.

4 . The method according to claim 1 , wherein each of the plurality of per channel SIG-Bs includes multi-user common resource allocation information indicating resources allocated within a 20 MHz channel unit, and a user-specific channel indicator indicating a channel in which the allocated resources are located.

5 . The method according to claim 1 , wherein the first channel is paired with at least one channel as a first channel group, and the per channel SIG-B of the first channel is transmitted repeatedly through the at least one channel paired with the first channel.

6 . The method according to claim 5 , wherein the second channel is paired with at least one channel different from the first channel as a second channel group, and the per channel SIG-B of the first channel further includes an indicator indicating whether a resource allocated to the first STA belongs to the first channel group or the second channel group.

7 . A station (STA) in a wireless LAN system, the station comprising:
a receiver receiving one of a plurality of per channel SIG-Bs included in a SIG-B field, through a first channel among a transmission bandwidth of a multi-user (MU) frame including data and the SIG-B field and receiving the data of the MU frame on a second channel different from the first channel through which the per channel SIG-B is received; and a processor controlling the receiver, wherein although any one of the plurality of per channel SIG-Bs is transmitted on the second channel, the data of the MU frame are received using the per channel SIG-B transmitted on the first channel instead of the per channel SIG-B transmitted on the second channel.

8 . A method for transmitting a signal by an access point (AP) in a wireless local area network (LAN) system, the method comprising:
transmitting one of a plurality of per channel SIG-Bs included in a SIG-B field, through a first channel among a transmission bandwidth of a multi-user (MU) frame including data of a station (STA) and the SIG-B field; and transmitting the data of the station on a second channel different from the first channel through which the per channel SIG-B is transmitted, wherein although any one of the plurality of per channel SIG-Bs is transmitted on the second channel, a resource of the data of the station is allocated using the per channel SIG-B transmitted on the first channel instead of the per channel SIG-B transmitted on the second channel.

9 . The method according to claim 8 , wherein the plurality of per channel SIG-Bs included in the SIG-B field are transmitted through channels different from each other.

10 . The method according to claim 9 , wherein a number of the plurality of per channel SIG-Bs is set differently from a number of the channels in accordance with a size of the transmission bandwidth.

11 . The method according to claim 8 , wherein each of the plurality of per channel SIG-Bs includes multi-user common resource allocation information indicating resources allocated within a 20 MHz channel unit, and a user-specific channel indicator indicating a channel in which the allocated resources are located.

12 . The method according to claim 8 , wherein the first channel is paired with at least one channel as a first channel group, and the per channel the SIG-B of the first channel is transmitted repeatedly through the at least one channel paired with the first channel.

13 . The method according to claim 12 , wherein the second channel is paired with at least one channel different from the first channel as a second channel group, and the per channel SIG-B of the first channel further includes an indicator indicating whether a resource allocated to the station belongs to the first channel group or the second channel group.

Assignees

• Lg Electronics Inc

Inventors

• Lim Dongguk
• Choi Jinsoo
• Cho Hangyu
• Kim Jinmin
• Park Eunsung

Classifications

• H04L27/2608 Primary

  Electricity · mapped topic

• H04W84/12

  WLAN [Wireless Local Area Networks] · CPC title

• H04W72/04

  Wireless resource allocation · CPC title

• H04L5/0044 Primary

  Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH · CPC title

• H04L5/0055

  Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861) · CPC title