公开(公告)号：US20170208625A1

公开(公告)日：2017-07-20

申请号：US15327013

申请日：2015-12-07

Applicant: LG ELECTRONICS INC.

Inventor： Hyeyoung CHOI ,  Kiseon RYU ,  Jeongki KIM ,  Hangyu CHO ,  Suhwook KIM ,  Kwangseok NOH

IPC: H04W74/08 ,  H04W72/08

CPC classification number: H04W74/0808 ,  H04L27/26 ,  H04W72/085 ,  H04W74/006 ,  H04W88/08

Abstract: A method for performing, by a station (STA) apparatus, uplink (UL) multi-user (MU) transmission in a wireless communication system according to an embodiment of the present invention includes performing carrier sensing on a channel, receiving a trigger frame including information for UL MU transmission and a carrier sense indicator indicating whether a result of the carrier sensing is to be reflected from an access point (AP), and transmitting an UL MU frame through the channel based on the information for UL MU transmission. The UL MU frame is transmitted through the channel based on a result of the carrier sensing if the carrier sense indicator indicates the reflection of a result of the carrier sensing. The UL MU frame is transmitted through the channel regardless of a result of the carries sensing if the carrier sense indicator does not indicate the reflection of a result of the carrier sensing.

公开(公告)号：US20170208580A1

公开(公告)日：2017-07-20

申请号：US15410710

申请日：2017-01-19

Applicant: LG ELECTRONICS INC.

Inventor： Hyunhee PARK ,  Kiseon RYU ,  Jeongki KIM ,  Hangyu CHO ,  Suhwook KIM

IPC: H04W72/04 ,  H04L5/00

CPC classification number: H04W72/048 ,  H04L5/0055 ,  H04W28/18 ,  H04W72/0453 ,  H04W84/12

Abstract: The present specification suggests a signal processing method for changing an operating mode to configure a PPDU in a wireless local area network (WLAN) system. Specifically, a first station receives indication information indicating a change in operating mode that indicates a number of spatial streams and a receiving channel bandwidth that are supported by a second station from the second station. The first station transmits a block acknowledgement (BA) in response to the indication information, the BA including a first delay required bit. The first station defers applying the indication information so that the indication information is not applied when the first delay required bit is a predetermined value.

公开(公告)号：US20170195959A1

公开(公告)日：2017-07-06

申请号：US15309415

申请日：2015-04-03

Applicant: LG ELECTRONICS INC.

Inventor： Giwon PARK ,  Kiseon RYU ,  Jeongki KIM ,  Hangyu CHO ,  Suhwook KIM

IPC: H04W52/02

CPC classification number: H04W52/0225 ,  H04W52/0216 ,  H04W84/12 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/22

Abstract: Disclosed are a method and apparatus for power saving mode-based operation in a wireless LAN. A method for power saving mode-based operation in a wireless LAN can comprise the steps of: an STA performing an initial configuration procedure for configuring a TIM-based power saving mode and an AP; the STA being converted from a doze state to an awake state, on the basis of a transmission period of a beacon frame, by operating in the TIM-based power saving mode on the basis of the initial configuration procedure, and thereby receiving a first downlink frame from the AP; the STA receiving from the AP operation mode configuration information indicating conversion from the TIM-based power saving mode to an active mode; and the STA receiving, on the basis of the active mode, a second downlink frame from the AP.

公开(公告)号：US20170187439A1

公开(公告)日：2017-06-29

申请号：US15393117

申请日：2016-12-28

Applicant: LG ELECTRONICS INC.

Inventor： Sungjin PARK ,  Jinmin KIM ,  Hangyu CHO ,  Kyungtae JO

IPC: H04B7/06 ,  H04L5/00 ,  H04B7/0456 ,  H04W84/12 ,  H04W74/08 ,  H04L1/00 ,  H04L27/00

CPC classification number: H04B7/0617 ,  H04B7/0452 ,  H04B7/0456 ,  H04B7/0632 ,  H04B7/0669 ,  H04B7/0695 ,  H04L1/0003 ,  H04L1/0009 ,  H04L5/0023 ,  H04L5/0073 ,  H04L27/0008 ,  H04L27/2602 ,  H04W72/0446

Abstract: The present disclosure relates to the operation and configuration of a station and an access point in a wireless LAN (WLAN) system, and more particularly, to a method for efficiently performing multi-user transmission by a station or an access point in a WLAN system and a device for the same. In particular, the present disclosure proposes a method and device for operating a station or an access point supporting multi-user transmission in a Frequency Division Multiple Access (FDMA) scheme or a Multi-User Multi Input Multi Output (MU-MIMO) scheme.

公开(公告)号：US20170163394A1

公开(公告)日：2017-06-08

申请号：US15367084

申请日：2016-12-01

Applicant: LG ELECTRONICS INC.

Inventor： Jinsoo CHOI ,  Dongguk LIM ,  Hangyu CHO ,  Eunsung PARK

IPC: H04L5/00 ,  H04W72/04 ,  H04L1/16

CPC classification number: H04L5/0048 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/0053 ,  H04W84/12

Abstract: The present specification proposes a method of configuring and transmitting a PHY protocol data unit (PPDU) including first to fourth resource unit (RU) areas corresponding to at least first to fourth frequency bands. The first frequency band corresponds to a lowest frequency band, and the fourth frequency band corresponds to a highest frequency band. In the PPDU, a center RU area is arranged between the second RU area and the third RU area. In this case, the PPDU includes a second signal field corresponding to the second frequency band and a third signal field corresponding to the third frequency band. The second signal field may include a control field for the center RU area, and control information for a user allocated to the center RU area may be included a last field of a user-specific control field of the third signal field.

公开(公告)号：US20170155486A1

公开(公告)日：2017-06-01

申请号：US15337913

申请日：2016-10-28

Applicant: LG ELECTRONICS INC.

Inventor： Eunsung PARK ,  Jinsoo CHOI ,  Dongguk LIM ,  Hangyu CHO

IPC: H04L5/00 ,  H04W72/04

CPC classification number: H04L5/0048 ,  H04L5/005 ,  H04L27/2613

Abstract: Provided is a method and an apparatus of configuring a LTF sequence in a wireless LAN system. In specific, a transmitting apparatus configures a LTF sequence of a second wireless LAN system by using a LTF sequence of a first wireless LAN system. The transmitting apparatus transmits the LTF sequence of the second wireless LAN system via a PPDU including a first field region and a second field region. The LTF sequence of the second wireless LAN system includes a first LTF sequence obtained by up-scaling a frequency index of the LTF sequence of the first wireless LAN system by four times and a second LTF sequence obtained by adding a frequency index which an optimized coefficient is applied. A phase rotation is applied to the LTF sequence of first wireless LAN system as per a first frequency band.

公开(公告)号：US20170127451A1

公开(公告)日：2017-05-04

申请号：US15317089

申请日：2015-04-27

Applicant: LG ELECTRONICS INC.

Inventor： Jinyoung CHUN ,  Wookbong LEE ,  Jinsoo CHOI ,  Dongguk LIM ,  Hangyu CHO

IPC: H04W74/08 ,  H04J4/00 ,  H04J13/18 ,  H04W72/12 ,  H04W72/04

CPC classification number: H04W74/0825 ,  H04J4/00 ,  H04J13/18 ,  H04W72/0446 ,  H04W72/0453 ,  H04W72/1284 ,  H04W74/0816 ,  H04W84/12

Abstract: Disclosed are a method and a device for receiving a frame in a wireless LAN. A method for receiving a frame in a wireless LAN comprises the steps of: an AP transmitting an RTS frame to a plurality of STAs, wherein the RTS frame comprises information for NAV setting of an STA other than the plurality of STAs; the AP receiving from each of the plurality of STAs, as a response to the RTS frame, a CTS PPDU and an additional CTS PPDU on overlapped time resources; and the AP transmitting an uplink transmission indication frame to the plurality of STAs, wherein the uplink transmission indication frame triggers transmission of an uplink frame of each of the plurality of STAs.

公开(公告)号：US20170127352A1

公开(公告)日：2017-05-04

申请号：US15315702

申请日：2015-02-26

Applicant: LG ELECTRONICS INC.

Inventor： Giwon PARK ,  Kiseon RYU ,  Jeongki KIM ,  Hangyu CHO ,  Suhwook KIM

IPC: H04W52/02

CPC classification number: H04W52/0225 ,  H04W52/0216 ,  H04W52/0235 ,  H04W52/0245 ,  H04W84/12 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/22

Abstract: Disclosed are a method and a device for operation based on a power save mode in a WLAN. The method for operation based on a power save mode may comprise steps in which: an STA, which has been switched to an awake state, transmits a PS-poll frame to an AP on the basis of the transmission cycle of a beacon frame; the STA receives an ACK frame from the AP in response to the PS-poll frame; after receiving the ACK frame, the STA overhears a different BSS frame; and within a preset time upon overhearing the different BSS frame, the STA determines whether or not to maintain the awake state on the basis of whether or not a power management control frame has been transmitted from the AP.

公开(公告)号：US20170111148A1

公开(公告)日：2017-04-20

申请号：US15296997

申请日：2016-10-18

Applicant: LG ELECTRONICS INC.

Inventor： Eunsung PARK ,  Jinsoo CHOI ,  Dongguk LIM ,  Hangyu CHO

IPC: H04L5/00 ,  H04W72/12

CPC classification number: H04L5/0048 ,  H04W84/12

Abstract: Provides are a method and an apparatus for transmitting a feedback frame in a wireless local area network (WLAN) system. Specifically, a station (STA) receives, from an access point (AP), a null data packet announcement (NDPA) frame indicating transmission of a null data packet (NDP). The STA receives the NDP from the AP. The STA transmits, to the AP, a feedback frame including channel state information determined based on the NDP. The channel state information indicates a feedback subcarrier in each subcarrier group. The subcarrier group is generated based on grouping information using subcarriers in a frequency band excluding a guard subcarrier and a DC subcarrier. The feedback subcarrier is included in a subcarrier with an odd-numbered subcarrier index. The feedback subcarrier corresponds to a subcarrier with an even-numbered subcarrier index that is adjacent to the subcarrier with the odd-numbered subcarrier when the subcarrier with the odd-numbered subcarrier is a null subcarrier.

公开(公告)号：US20170026947A1

公开(公告)日：2017-01-26

申请号：US15302470

申请日：2015-04-09

Applicant: LG Electronics Inc.

Inventor： Jeongki KIM ,  Kiseon RYU ,  Jinsoo CHOI ,  Giwon PARK ,  Suhwook KIM ,  Hangyu CHO

IPC: H04W72/04 ,  H04L5/00 ,  H04W76/06 ,  H04W28/04 ,  H04B7/04

CPC classification number: H04W72/042 ,  H04B7/0452 ,  H04L5/0007 ,  H04W28/04 ,  H04W74/08 ,  H04W76/38 ,  H04W84/12

Abstract: The present document relates to a wireless communication system and, more particularly, to a method for performing retransmission in a wireless LAN system to which transmission opportunity (TXOP) sharing is applied, and a device therefor. To this end, a station transmits an initial transmission frame including primary access category (AC) information and secondary access category (AC) information; and when there is no response to the secondary AC information of the initial transmission frame, reconfigures a back-off timer value for the secondary AC information and retransmits the secondary AC information according to the reconfigured back-off timer value.

Abstract translation: 本发明涉及一种无线通信系统，更具体地，涉及一种在应用传输机会（TXOP）共享的无线LAN系统中执行重传的方法及其装置。 为此，站发送包括主接入类别（AC）信息和次要接入类别（AC）信息的初始传输帧; 并且当对初始传输帧的辅助AC信息没有响应时，重新配置辅助AC信息的退避定时器值，并根据重新配置的退避定时器值重发次要AC信息。