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.

公开(公告)号：US09820302B2

公开(公告)日：2017-11-14

申请号：US14394185

申请日：2013-04-15

Applicant: LG Electronics Inc.

Inventor： Jinsoo Choi ,  Seunghee Han ,  Jinsam Kwak ,  Yongho Seok ,  Jeongki Kim

IPC: H04J3/00 ,  H04W74/04 ,  H04W72/02 ,  H04W74/08

CPC classification number: H04W74/04 ,  H04W72/02 ,  H04W74/0808

Abstract: One embodiment of the present invention is a method for performing channel access using a first station (STA) in a wireless communication system, comprising: a step of receiving a traffic indication map (TIM) bitmap; and a step of attempting channel access for a wireless medium in a first time period indicated by the first TIM bitmap. The first STA attempts channel access for the wireless medium in a third time period which is one of the second time periods indicated by the TIM bitmap in the event that the first STA senses an operation of a second STA relating to the wireless medium in the first time period.

公开(公告)号：US09794864B2

公开(公告)日：2017-10-17

申请号：US14419226

申请日：2013-08-14

Applicant: LG ELECTRONICS INC.

Inventor： Giwon Park ,  Jinsam Kwak ,  Kiseon Ryu

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

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

Abstract: Disclosed are a method and an apparatus for scanning in a wireless LAN. The method may comprise the following steps: an STA determining identifier information of an AP to be included in a probe request frame as a wildcard SSID and a wildcard BSSID, based on a first MLME; the STA receiving from the AP a frame including information on the BSSID of the AP and the SSID of the AP before a probe delay time expires; the STA determining wither the AP is a target AP based on the BSSID and the SSID; the STA redetermining the identifier information of the AP to be included in the probe request frame based on the BSSID and the SSID, when the AP is the target AP; and the STA unicasting a probe request frame that is re-determined based on the BSSID and the SSID.

公开(公告)号：US09609665B2

公开(公告)日：2017-03-28

申请号：US14387505

申请日：2013-03-25

Applicant: LG Electronics Inc.

Inventor： Jinsoo Choi ,  Jeongki Kim ,  Yongho Seok ,  Seunghee Han ,  Jinsam Kwak

IPC: H04W74/00 ,  H04W74/08 ,  H04W84/12

CPC classification number: H04W74/0808 ,  H04W74/006 ,  H04W84/12

Abstract: The present invention relates to a wireless communication system, and more particularly, to a method and an apparatus for accessing a channel in a wireless LAN system. According to one embodiment of the present invention, a method for performing channel access by a station (STA) of a wireless communication system comprises: a step of receiving, from an access point (AP), information about the time window which does not allow channel access of a traffic indication map (TIM) mode STA; and a step of performing channel access based on the time window. In the event that the STA is a non-TIM mode STA, the channel access is performed in the time window. In the event that the STA is a TIM mode STA, the channel access is performed in the time interval indicated by the TIM, excluding the time window.

公开(公告)号：US09554326B2

公开(公告)日：2017-01-24

申请号：US14389663

申请日：2013-04-12

Applicant: LG ELECTRONICS INC.

Inventor： Kiseon Ryu ,  Giwon Park ,  Jinsam Kwak

IPC: H04W4/00 ,  H04W48/16 ,  H04W8/00 ,  H04W84/12

CPC classification number: H04W48/16 ,  H04W8/005 ,  H04W84/12

Abstract: Disclosed are an active scanning method and an active scanning device. The active scanning method in a wireless LAN comprises the steps of: a second station (STA) receiving a first probe request frame which has been broadcast by a first STA; and the second STA broadcasting a second probe request frame. The second probe request frame may include a probe request frame detection field, and the probe request frame detection field may indicate that the second STA has received the first probe request frame. Accordingly, a probe response frame is broadcast to a plurality of STAs, thus simplifying a scanning procedure.

Abstract translation: 公开了主动扫描方法和主动扫描装置。 无线LAN中的主动扫描方法包括以下步骤：接收由第一STA广播的第一探测请求帧的第二站（STA） 并且第二STA广播第二探测请求帧。 第二探测请求帧可以包括探测请求帧检测字段，并且探测请求帧检测字段可以指示第二STA已经接收到第一探测请求帧。 因此，将探测响应帧广播到多个STA，从而简化扫描过程。

公开(公告)号：US09485769B2

公开(公告)日：2016-11-01

申请号：US14396443

申请日：2013-04-25

Applicant: LG Electronics Inc.

Inventor： Suhwook Kim ,  Wookbong Lee ,  Jinsam Kwak

IPC: H04W72/04 ,  H04W84/12 ,  H04W16/14

CPC classification number: H04W72/0453 ,  H04W16/14 ,  H04W84/12

Abstract: The present invention relates to a wireless communication system and, more specifically, to a method and an apparatus for determining an operating channel. The method for determining the operating channel of a station (STA) in a TV whitespace (TVWS) wireless LAN system, according to one embodiment of the present invention, comprises the steps of: receiving information on an index which indicates an operating class including channel start frequency, channel spacing, and channel set parameters; and determining a main frequency of the operating channel on the basis of the parameters indicated by the index of the operating class. The main frequency of the operating channel can be determined on the basis of a correction value which is set differently according to the configuration of a basic channel unit of the operating channel.

Abstract translation: 无线通信系统技术领域本发明涉及一种无线通信系统，更具体地，涉及用于确定操作信道的方法和装置。 根据本发明的一个实施例，用于确定电视空白（TVWS）无线LAN系统中的台站（STA）的操作信道的方法包括以下步骤：接收关于指示包括频道的操作类别的索引的信息 起始频率，信道间隔和信道设置参数; 并且基于由所述操作类的索引指示的参数来确定所述操作信道的主频率。 可以基于根据操作信道的基本信道单元的配置而不同地设置的校正值来确定操作信道的主频率。

公开(公告)号：US09451479B2

公开(公告)日：2016-09-20

申请号：US14394168

申请日：2013-04-15

Applicant: LG Electronics Inc.

Inventor： Jeongki Kim ,  Jinsam Kwak ,  Yongho Seok ,  Seunghee Han ,  Jinsoo Choi

IPC: H04W24/02 ,  H04W48/14 ,  H04W84/12 ,  H04W48/16

CPC classification number: H04W48/14 ,  H04W24/02 ,  H04W48/16 ,  H04W72/0446 ,  H04W84/12

Abstract: The present invention relates to a wireless communication system, and more particularly, to a method and apparatus for updating system information in a wireless LAN system. A method for a station (STA) to update system information in a wireless communication system according to one embodiment of the present invention comprises the steps of: if the value of a change sequence field received by the STA from an access point (AP) is different from the value of the change sequence field stored in the STA, transmitting, to the AP, a probe request frame including the change sequence field set to the value of the change sequence field stored in the STA; and a step of receiving, from the AP, a probe response frame responding to the probe request frame including the change sequence field.

Abstract translation: 无线通信系统技术领域本发明涉及一种无线通信系统，更具体地，涉及一种用于更新无线LAN系统中的系统信息的方法和装置。 根据本发明的一个实施例的用于站（STA）更新无线通信系统中的系统信息的方法包括以下步骤：如果STA从接入点（AP）接收到的改变序列字段的值是 与存储在STA中的改变序列字段的值不同，向AP发送包括设置为存储在STA中的改变序列字段的值的改变序列字段的探测请求帧; 以及从AP接收响应于包括改变序列字段的探测请求帧的探测响应帧的步骤。

公开(公告)号：US09451460B2

公开(公告)日：2016-09-20

申请号：US14374844

申请日：2013-02-07

Applicant: LG ELECTRONICS INC.

Inventor： Giwon Park ,  Jinsam Kwak ,  Kiseon Ryu ,  Jaehyung Song

IPC: H04L29/06 ,  H04W12/06 ,  H04W12/08 ,  H04W84/12

CPC classification number: H04W12/06 ,  H04W12/08 ,  H04W84/12

Abstract: The present invention relates to a method and apparatus for associating a station (STA) with an access point (AP). The method for associating a first AP with an STA in a wireless LAN includes the steps of: a first AP receiving an association request frame from the STA; the first AP requesting authentication information on the STA from a second AP with which the STA was previously associated; the first AP receiving authentication information on the STA from the second AP, wherein the first and second AP's are linked by a distribution system, the association request frame includes identification information on the second AP, and the authentication information on the STA can include at least one of a paired main key (PMK) and a recertification main session key (rMSK). Accordingly, fast association between the STA and the AP can be achieved by a simplified authentication procedure without repeating a full authentication procedure.

Abstract translation: 本发明涉及一种用于将站（STA）与接入点（AP）相关联的方法和装置。 在无线LAN中将第一AP与STA相关联的方法包括以下步骤：第一AP从STA接收关联请求帧; 第一AP从STA先前关联的第二AP请求STA上的认证信息; 所述第一AP从所述第二AP接收所述STA的认证信息，其中，所述第一AP和所述第二AP由分发系统链接，所述关联请求帧包括关于所述第二AP的标识信息，并且所述STA上的认证信息至少可以包括 配对主键（PMK）和重新认证主会话密钥（rMSK）中的一个。 因此，STA和AP之间的快速关联可以通过简化的认证过程来实现，而不重复完整的认证过程。

公开(公告)号：US09445434B2

公开(公告)日：2016-09-13

申请号：US14377534

申请日：2013-02-08

Applicant: LG Electronics Inc.

Inventor： Suhwook Kim ,  Jinsam Kwak ,  Wookbong Lee ,  Seunghee Han

IPC: H04W74/08 ,  H04W16/14

CPC classification number: H04W74/0808 ,  H04W16/14

Abstract: One embodiment of the present invention relates to a method for transmitting a signal by a terminal in a wireless communication system which comprises a step wherein, during a predetermined time period in one portion of the frequency bandwidths from among the frequency bandwidths of channels used by said terminal, a carrier wave sensing signal of another terminal is transmitted in which information on the frequency bandwidths of the channel is included.

Abstract translation: 本发明的一个实施例涉及一种在无线通信系统中由终端发送信号的方法，该无线通信系统包括以下步骤：在所述频带所使用的信道的频带宽度的频带宽度的一部分中的预定时间段内， 发送另一个终端的载波检测信号，其中包括关于频道的频率带宽的信息。

公开(公告)号：US09426736B2

公开(公告)日：2016-08-23

申请号：US14374433

申请日：2013-02-04

Applicant: LG ELECTRONICS INC.

Inventor： Jeongki Kim ,  Yongho Seok ,  Jinsam Kwak ,  Jinsoo Choi

IPC: H04W52/02 ,  H04W74/00 ,  H04W72/12 ,  H04W74/08

CPC classification number: H04W52/0209 ,  H04W4/70 ,  H04W52/0216 ,  H04W52/0219 ,  H04W52/0229 ,  H04W52/0235 ,  H04W72/1289 ,  H04W74/004 ,  H04W74/08 ,  H04W84/12 ,  Y02D70/1222 ,  Y02D70/1224 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/21 ,  Y02D70/22

Abstract: The present invention relates to a wireless communication system, and more specifically, to a method and apparatus for accessing channels in a wireless LAN system. The method for accessing channels in a station (STA) of the wireless communication system according to one embodiment of the present invention comprises the steps of transmitting a first frame of a channel access request to an access point (AP); and receiving, from the AP, a second frame related to whether access to the channel is allowed in response to the first frame, wherein the second frame can include a value for a channel access start offset with respect to the STA.

Abstract translation: 无线通信系统技术领域本发明涉及一种无线通信系统，更具体地，涉及一种用于在无线LAN系统中访问信道的方法和装置。 根据本发明的一个实施例的用于访问无线通信系统的站（STA）中的信道的方法包括以下步骤：向接入点（AP）发送信道接入请求的第一帧; 以及从所述AP接收与响应于所述第一帧是否允许对所述信道的接入相关的第二帧，其中所述第二帧可以包括相对于所述STA的信道接入开始偏移的值。