公开(公告)号：US10292155B2

公开(公告)日：2019-05-14

申请号：US15021654

申请日：2014-09-15

Applicant: LG ELECTRONICS INC.

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

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

Abstract: A method and a device for receiving a multicast frame in a wireless LAN are disclosed. The method for receiving a multicast frame in a wireless LAN comprises the steps of: combining, by an STA, an AP on the basis of an initial access frame transmitted by the AP through a primary channel; setting, by the STA, an operating channel as an exclusive multicast channel on a first time resource, wherein the first time resource and the primary channel are indicated on the basis of the initial access frame; receiving, by the STA, the multicast frame from the AP through the exclusive multicast channel on the first time resource; setting, by the STA, the operating channel as the primary channel on a second time resource; and receiving, by the STA, a unicast frame from the AP through the primary channel on the second time resource.

公开(公告)号：US10194381B2

公开(公告)日：2019-01-29

申请号：US15737046

申请日：2016-06-24

Applicant: LG ELECTRONICS INC.

Inventor： Dongcheol Kim ,  Byungjoo Lee ,  Hyunhee Park ,  Giwon Park ,  Taesung Lim

IPC: H04W4/06 ,  H04W48/16 ,  H04L29/08 ,  H04W84/12 ,  H04L29/12 ,  H04L12/18

Abstract: The present specification relates to a method for performing service discovery by a first terminal in a wireless communication system. Here, the method for performing service discovery by a first terminal may comprise the steps of: performing a service discovery procedure with a second terminal; and establishing a session connection with the second terminal, wherein the service discovery procedure may be performed through an mDNS on the basis of an ASP. In addition, the service discovery procedure may comprise the steps of: exchanging PTR query messages on the basis of the mDNS; and exchanging SRV and TXT query messages on the basis of the mDNS, wherein the TXT record of the SRV and TXT query message may essentially include advertisement ID information for the service.

公开(公告)号：US10187885B2

公开(公告)日：2019-01-22

申请号：US15118088

申请日：2014-12-17

Applicant: LG ELECTRONICS INC.

Inventor： Suhwook Kim ,  Kiseon Ryu ,  Wookbong Lee ,  Jinsoo Choi ,  Hangyu Cho ,  Jeongki Kim ,  Giwon Park

IPC: H04W72/04 ,  H04W74/08 ,  H04L5/00 ,  H04L27/26 ,  H04W84/12

Abstract: A method and a device for transmitting a frame in a wireless LAN are disclosed. A method for transmitting a data unit in a wireless LAN can comprise the steps of: transmitting, by an AP, an RTS frame for medium protection to a plurality of STAs through a plurality of channels; receiving, by the AP, a CTS frame in response to the RTS frame from each of the plurality of STAs through a first allocation channel, wherein the first allocation channel is at least one of the plurality of channels, which is determined on the basis of the RTS frame; and transmitting, by the AP, downlink data to each of the plurality of STAs through a second allocation channel on the basis of OFDMA in overlapped time resources, wherein the second allocation channel is at least one of the plurality of channels.

公开(公告)号：US10142950B2

公开(公告)日：2018-11-27

申请号：US15115880

申请日：2015-02-05

Applicant: LG ELECTRONICS INC.

Inventor： Dongcheol Kim ,  Byungjoo Lee ,  Giwon Park

IPC: H04W56/00 ,  H04W24/02 ,  H04L12/26 ,  H04W40/24 ,  H04W48/16

Abstract: One embodiment of the present invention relates to a method for transreceiving signals through a neighbor awareness networking (NAN) terminal in a wireless communication system, comprising the steps of: receiving a NAN synchronization beacon frame and/or a NAN discovery beacon frame; and accessing a NAN cluster which has transmitted the NAN discovery beacon frame, wherein when the NAN cluster is a coordinated NAN cluster, the NAN terminal maintains the state at the time of accessing the NAN cluster.

公开(公告)号：US10098081B2

公开(公告)日：2018-10-09

申请号：US15108435

申请日：2015-02-06

Applicant: LG ELECTRONICS INC.

Inventor： Dongcheol Kim ,  Byungjoo Lee ,  Giwon Park

IPC: H04W56/00 ,  H04W8/00 ,  H04W84/12

Abstract: One embodiment of the present invention relates to a method for shifting the state of a neighbor awareness networking (NAN) terminal in a wireless communication system, comprising the steps of: receiving a first synchronization beacon frame; and receiving a second synchronization beacon frame after the first sync beacon frame has been received, wherein the state of the NAN terminal is shifted to a state capable of transmitting synchronization beacon frames regardless of a received signal strength indicator (RSSI) of the synchronization beacon frames, when anchor master rank information included in the first synchronization beacon frame and anchor master rank information included in the second synchronization beacon frame are different, and the NAN terminal is in a non-master non-sync state.

公开(公告)号：US20180249512A1

公开(公告)日：2018-08-30

申请号：US15754475

申请日：2016-08-10

Applicant: LG ELECTRONICS INC.

Inventor： Giwon Park ,  Dongcheol Kim ,  Byungjoo Lee ,  Youngjun Jo ,  Taesung Lim

IPC: H04W76/10 ,  H04L29/06 ,  H04N21/4363 ,  H04N21/435 ,  H04N21/2368

CPC classification number: H04W76/10 ,  H04L65/608 ,  H04L65/80 ,  H04N21/2368 ,  H04N21/4348 ,  H04N21/435 ,  H04N21/43637 ,  H04N21/64322 ,  H04W84/12

Abstract: Provided are a method and an apparatus for transmitting metadata in a WFD. More particularly, a WFD source transmits, to a WFD sink, a first transmission stream in which an audio stream and a video stream are superimposed and multiplexed. The WFD source receives, from the WFD sink, a first RTSP request message for requesting transmission of metadata for audio data and video data during the transmission of the first transmission stream. The WFD source transmits, to the WFD sink, a first RTSP response message in response to the first RTSP request message during the transmission of the first transmission stream. The WFD source transmits, to the WFD sink, a metadata stream including the metadata and a second transmission stream in which the audio stream and the video stream are superimposed and multiplexed.

公开(公告)号：US10051656B2

公开(公告)日：2018-08-14

申请号：US15102864

申请日：2014-12-05

Applicant: LG ELECTRONICS INC.

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

IPC: H04W72/12 ,  H04W72/04 ,  H04W48/12 ,  H04W74/08 ,  H04W76/27

Abstract: The present document relates to a wireless communication system and, more particularly, to a method for performing communication using a downlink (DL) oriented channel in a high-density wireless LAN system and an apparatus therefor. A particular station STA1 configured therefor connects with an AP through a normal channel, switches to a downlink oriented channel during an active mode operation, and receives data from the AP through the DL oriented channel. Meanwhile, data is transmitted to the AP through switching to the normal channel. Here, the first station obtains information on a specific interval for receiving data from the AP through the downlink oriented channel, switches to the normal channel during an interval other than the specific interval, and transmits data to the AP.

公开(公告)号：US09980122B2

公开(公告)日：2018-05-22

申请号：US15113803

申请日：2014-04-10

Applicant: LG ELECTRONICS INC.

Inventor： Byungjoo Lee ,  Giwon Park ,  Dongcheol Kim

IPC: H04W8/00 ,  H04W48/14 ,  H04W48/16 ,  H04L5/00 ,  H04L29/12 ,  H04L29/08 ,  H04W48/10 ,  H04W84/12

CPC classification number: H04W8/005 ,  H04L5/0055 ,  H04L61/6063 ,  H04L67/104 ,  H04W48/10 ,  H04W48/14 ,  H04W48/16 ,  H04W76/14 ,  H04W84/12

Abstract: One embodiment of the present invention relates to a method for performing discovery from a first device supporting a Wi-Fi direct service, comprising the steps of: an application service platform (ASP) layer in the first device receiving, from a service layer, a SeekService method; the ASP layer generating a service hash based on the SeekService method; and transmitting a discovery request including the service hash to an access point (AP), wherein the discovery request is broadcasted to devices included in a subnet to which the first device belongs, via a port associated with the AP.

公开(公告)号：US09961635B2

公开(公告)日：2018-05-01

申请号：US15110705

申请日：2015-01-12

Applicant: LG ELECTRONICS INC.

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

IPC: H04W52/02 ,  H04W28/02 ,  H04W84/12 ,  H04L12/851 ,  H04W88/08

CPC classification number: H04W52/0216 ,  H04L47/245 ,  H04W28/0221 ,  H04W84/12 ,  H04W88/08 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/22 ,  Y02D70/23

Abstract: Disclosed are a method and an apparatus for operating based on a power save mode in a wireless LAN. The method for operating based on the power save mode in a wireless LAN may comprise the steps of: an AP receiving, from a first STA, a first trigger frame for triggering the transmission of first downlink data which has been buffered for the first STA; the AP determining a temporary halt of the transmission the first downlink data, which is transmitted as a response to the first trigger frame, based on a first priority rank of the first downlink data which has been buffered for the first STA, a second priority rank of second downlink data which has been buffered for a second STA, and a point when the second STA is switched to an awake state; and the AP transmitting, to the first STA, a temporary halt setting frame for indicating the temporary halt.

公开(公告)号：US09838954B2

公开(公告)日：2017-12-05

申请号：US15355954

申请日：2016-11-18

Applicant: LG ELECTRONICS INC.

Inventor： Jeongki Kim ,  Yongho Seok ,  Jinsam Kwak ,  Jinsoo Choi ,  Kiseon Ryu ,  Giwon Park

IPC: H04W4/00 ,  H04W48/16 ,  H04W48/20 ,  H04W48/14 ,  H04W84/12 ,  H04W88/08

CPC classification number: H04W48/16 ,  H04W48/14 ,  H04W48/20 ,  H04W84/12 ,  H04W88/08

Abstract: The present invention relates to a method and a device for updating system information in a wireless LAN system. A method for updating system information in a station (STA) of a wireless communication system may comprise transmitting, by the STA which stores system information and a configuration change count value of a previously linked preferred access point (AP), a probe request frame for active scanning to the preferred AP; and receiving a probe response frame from the preferred AP. Preferably, the probe request frame includes a configuration change count field previously acquired from the preferred AP, and if a value of the configuration change count field included in the probe request frame is different from a present configuration change count value of the preferred AP, the probe response frame may include one or more elements of system information which should be updated by the STA.