公开(公告)号：US10433158B2

公开(公告)日：2019-10-01

申请号：US15337399

申请日：2016-10-28

Applicant: LG ELECTRONICS INC.

Inventor： Kiseon Ryu ,  Jeongki Kim ,  Suhwook Kim

IPC: H04W8/24 ,  H04W72/02 ,  H04W72/00 ,  H04W74/00 ,  H04W28/18 ,  H04W84/12

Abstract: The specification proposes a signal processing method for changing an operating mode for configuring a PPDU in a wireless LAN system. More specifically, a change in the operating mode may be carried out during a time interval known to both a transmitting station and a receiving station. The time interval during which the change in the operating mode is carried out may be explicitly signaled or implicitly notified. For example, in case a change to a new operating mode is requested during a transmission opportunity (TXOP), the change in the operating mode may be delayed until a subsequent TXOP, and the new operating mode may be applied during the subsequent TXOP.

公开(公告)号：US10356711B2

公开(公告)日：2019-07-16

申请号：US15508457

申请日：2015-09-02

Applicant: LG ELECTRONICS INC.

Inventor： Giwon Park ,  Kiseon Ryu ,  Jeongki Kim ,  Hangyu Cho ,  Suhwook Kim

IPC: H04W4/06 ,  H04W52/02 ,  H04W74/06 ,  H04W84/12 ,  H04W88/08

Abstract: Disclosed are a method and a device for triggering a plurality of PS-poll frames in a wireless LAN. The method for triggering a plurality of PS-poll frames in a wireless LAN can comprise the steps of: transmitting, by an AP, a beacon frame; transmitting, by the AP, a first PS-poll trigger frame within a beacon interval; receiving, by the AP, a plurality of first PS-poll frames transmitted on the basis of a UL MU transmission by a first STA group as a response to the first PS-poll trigger frame; transmitting, by the AP, a plurality of first downlink data frames to a plurality of STAs on the basis of a DL MU transmission as a response to the plurality of first PS-poll frames; transmitting, by the AP, a second PS-poll trigger frame within a beacon interval; receiving, by the AP, a plurality of second PS-poll frames transmitted on the basis of the UL MU transmission by a second STA group as a response to the second PS-poll trigger frame; and transmitting, by the AP, a plurality of second downlink data frames to the plurality of STAs on the basis of the DL MU transmission as a response to the plurality of second PS-poll frames.

公开(公告)号：US10341058B2

公开(公告)日：2019-07-02

申请号：US15756921

申请日：2016-09-01

Applicant: LG ELECTRONICS INC.

Inventor： Jeongki Kim ,  Kiseon Ryu ,  Hangyu Cho

IPC: H04L1/16 ,  H04L5/00 ,  H04W84/12 ,  H04L1/00

Abstract: Disclosed are a method and a device by which an access point (AP) transmits a block ACK (BA) signal for transmission data of a plurality of stations (STAs) in a wireless LAN (WLAN) system. To this end, an AP receives data from a plurality of STAs, and transmits a first multi-STA BA frame (M-BA frame) for the data received from the plurality of STAs, wherein the first M-BA frame includes a MAC header field, a BA control field, and a BA information field, a last N bit of the BA control field indicates at least one from among the number of pieces of BA information included in the first M-BA frame and information on a succeeding ACK frame, and N is set to 5 or more.

公开(公告)号：US10327203B2

公开(公告)日：2019-06-18

申请号：US15570297

申请日：2016-02-17

Applicant: LG ELECTRONICS INC.

Inventor： Hyeyoung Choi ,  Kiseon Ryu ,  Jeongki Kim ,  Hangyu Cho ,  Suhwook Kim

IPC: H04W52/02 ,  H04W72/12 ,  H04W84/12 ,  H04W76/28 ,  H04W72/04 ,  H04W88/08

Abstract: A method for UL MU transmission of an STA operating in a power save mode comprises the steps of: transmitting a TWT request element including first information related to a requested TBTT of a first beacon frame and second information related to a requested wake interval between subsequent beacon frames the STA intends to receive to an AP; receiving a TWT response element from the AP in response to the TWT request element; switching to a doze state from the awake state after receiving the TWT response element; switching to the awake state from the doze state based on the third information in order to receive the first beacon frame from the AP; receiving the first beacon frame including fifth information related to a trigger transmission time of a trigger frame soliciting the UL MU transmission from one or more STAs from the AP.

公开(公告)号：US10321473B2

公开(公告)日：2019-06-11

申请号：US15791157

申请日：2017-10-23

Applicant: LG ELECTRONICS INC.

Inventor： Jeongki Kim ,  Kiseon Ryu ,  Hangyu Cho

IPC: H04W4/00 ,  H04W72/12 ,  H04W72/04 ,  H04W74/08 ,  H04W84/12

Abstract: According to one embodiment of the present invention, a method for a station (STA) to transmit a frame in a wireless local area network system includes setting a TXOP duration field and a UL flag and transmitting a high efficiency physical layer protocol data unit (HE PPDU) including the TXOP duration field and the UL flag. In this case, the STA sets the UL flag to a first value corresponding to uplink if the HE PPDU is addressed to an access point (AP). When the TXOP duration field is set to a special value other than a TXOP duration value for configuring a network allocation vector and the HE PPDU corresponds to a single user PPDU carrying an ready-to-send frame or a clear-to-send frame, the STA may set the UL flag to a second value corresponding to downlink, even if the HE PPDU is addressed to the AP.

公开(公告)号：US10321472B2

公开(公告)日：2019-06-11

申请号：US15310734

申请日：2015-06-08

Applicant: LG ELECTRONICS INC.

Inventor： Jeongki Kim ,  Kiseon Ryu ,  Giwon Park ,  Suhwook Kim ,  Hangyu Cho

IPC: H04L1/16 ,  H04L1/18 ,  H04L5/00 ,  H04L27/26 ,  H04W72/04 ,  H04W72/12 ,  H04W84/12 ,  H04W88/08

Abstract: The present document relates to a method for efficiently performing uplink multi-user transmission in a wireless LAN system and an apparatus therefor. To this end, an access point (AP) may transmit a downlink multi-user frame to a plurality of STAs, receive an uplink frame including an acknowledgement/non-acknowledgement (ACK/NACK) signal for the downlink multi-user frame and an uplink scheduling request signal from at least two STAs among the STAs, transmit a downlink frame including uplink scheduling information to the at least two STAs on the basis of the uplink scheduling request signal, and receive an uplink multi-user frame including data from the at least two STAs in response thereto. Here, an SIG field of the downlink frame preferably comprises an indicator indicating that the downlink frame includes uplink multi-user scheduling information.

公开(公告)号：US10320529B2

公开(公告)日：2019-06-11

申请号：US15516325

申请日：2015-10-01

Applicant: LG ELECTRONICS INC.

Inventor： Jinyoung Chun ,  Kiseon Ryu ,  Jeongki Kim ,  Jinsoo Choi ,  Hangyu Cho

IPC: H04B7/06 ,  H04L1/00 ,  H04L1/16 ,  H04L29/06 ,  H04W72/04 ,  H04W84/12 ,  H04B7/0413

Abstract: Disclosed is a downlink (DL) multi-user (MU) transmission method of an AP device in a wireless local area network (WLAN) system including generating a DL MU physical protocol data unit (PPDU) including a physical preamble and a data field, the data field including at least one MAC protocol data unit (MPDU), the at least one MPDU including a MAC header and a MAC frame body, and the MAC header including ACK indication information for uplink (UL) MU transmission of an ACK frame as a response to data transmitted through the data field, and transmitting the DL MU PPDU.

公开(公告)号：US10306667B2

公开(公告)日：2019-05-28

申请号：US15772799

申请日：2017-01-16

Applicant: LG ELECTRONICS INC.

Inventor： Jeongki Kim ,  Kiseon Ryu ,  Hangyu Cho

IPC: H04W72/12 ,  H04L1/00 ,  H04L27/26 ,  H04W84/12 ,  H04L1/16 ,  H04B7/0452

Abstract: Disclosed is a method for transmitting an acknowledgement signal in response to downlink data by a station (STA) in a wireless local area network (WLAN) system. To this end, the STA receives a downlink physical protocol data unit (PPDU) including a control information subfield for uplink scheduling information and downlink data from an access point (AP) and transmits, to the AP, an uplink PPDU including an acknowledgement signal in response to the downlink data according to the uplink scheduling information. In this case, the control information subfield may include length information of the uplink PPDU, resource unit (RU) allocation information for the uplink PPDU, modulation and coding scheme (MCS) information for the uplink PPDU, transmit power of the AP, and target receive signal strength indicator (RSSI) information of the AP.

公开(公告)号：US10278127B2

公开(公告)日：2019-04-30

申请号：US15502489

申请日：2015-02-05

Applicant: LG ELECTRONICS INC.

Inventor： Giwon Park ,  Kiseon Ryu ,  Jeongki Kim ,  Hangyu Cho ,  Suhwook Kim

IPC: H04W52/02 ,  H04W84/12 ,  H04W40/24 ,  H04W72/04 ,  H04L29/08

Abstract: Disclosed are a power save mode-based operating method and apparatus in a wireless LAN. The power save mode-based operating method in a wireless LAN comprises the steps of: receiving, by an STA, overheard BSS information from an AP; receiving, by the STA, a PPDU, wherein the PPDU includes information on a BSS having transmitted the PPDU; determining, by the STA, whether the overheard BSS information includes the information on the BSS; and switching an awake state to a doze state when the STA determines whether the overheard BSS information includes the information on the BSS, wherein the overheard BSS information can include the information on at least one overheard BSS for transmitting a frame enabled to be overheard by the AP.

公开(公告)号：US10205578B2

公开(公告)日：2019-02-12

申请号：US15695498

申请日：2017-09-05

Applicant: LG ELECTRONICS INC.

Inventor： Jeongki Kim ,  Kiseon Ryu ,  Hangyu Cho

IPC: H04L5/00 ,  H04W72/12 ,  H04L1/18 ,  H04W84/12 ,  H04L29/08 ,  H04W92/18 ,  H04L1/16

Abstract: A method and apparatus for a first station (STA) to transmit an acknowledgement (ACK) signal to a second STA in a wireless local area network (WLAN) are disclosed. For this end, the first STA receive a first type frame aggregated with a second type frame from the second STA, wherein the first type frame does not include a quality of service (QoS) control field while the second type frame includes the QoS control field. Then, the first STA transmits an ACK signal for the first type frame to the second STA based on an ACK policy of the QoS control field of the second type frame.