公开(公告)号：US09467933B2

公开(公告)日：2016-10-11

申请号：US14380894

申请日：2013-02-26

Applicant: LG ELECTRONICS INC.

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

IPC: H04W36/00 ,  H04W48/16 ,  H04W48/14 ,  H04W84/12

CPC classification number: H04W48/16 ,  H04W48/14 ,  H04W84/12

Abstract: A device and method for active scanning are disclosed. The active scanning method in a wireless LAN can comprise the steps of: allowing an AP to receive a probe request frame containing an the AP identifier; determining whether the AP is a target AP or a non-target AP on the basis of the AP identifier; and performing back-off for the transmission of a probe response frame from a second interval after a first interval is terminated in a minimum channel interval when the AP is a non-target AP. Therefore, the present invention can prevent probe response frames from flooding a STA in a short period of time by distributing intervals in which probe response frames are received to the STA. In addition, the time used by the STA to perform active scanning can be reduced.

Abstract translation: 公开了一种用于主动扫描的装置和方法。 无线LAN中的主动扫描方法可以包括以下步骤：允许AP接收包含AP标识符的探测请求帧; 基于所述AP标识符来确定所述AP是目标AP还是非目标AP; 以及当所述AP是非目标AP时，在以最小信道间隔终止所述第一间隔之后的第二间隔时，执行用于传送探测响应帧的退避。 因此，本发明可以通过向STA发送探测响应帧的间隔来防止探测响应帧在短时间内溢出STA。 另外，可以减少STA进行主动扫描所使用的时间。

公开(公告)号：US09451538B2

公开(公告)日：2016-09-20

申请号：US14443124

申请日：2014-04-29

Applicant: LG Electronics Inc.

Inventor： Giwon Park ,  Hangyu Cho ,  Kiseon Ryu

IPC: H04W48/16 ,  H04W48/14 ,  H04W48/10 ,  H04W8/22 ,  H04W84/12

CPC classification number: H04W48/14 ,  H04W8/22 ,  H04W48/10 ,  H04W48/16 ,  H04W84/12

Abstract: Disclosed are a method and an apparatus for active scanning in a wireless LAN. The method for active scanning in a wireless LAN may comprise the steps of: a first station (STA) transmitting a first probe request frame to an access point (AP); and a first STA receiving a probe response frame from the AP, wherein the probe response frame is a response for the probe request frame, and the first probe request frame comprises fast initial link setup (FILS) capability information which can indicate whether the first STA supports FILS.

Abstract translation: 公开了一种在无线LAN中主动扫描的方法和装置。 在无线LAN中主动扫描的方法可以包括以下步骤：向接入点（AP）发送第一探测请求帧的第一站（STA）; 以及从AP接收探测响应帧的第一STA，其中所述探测响应帧是所述探测请求帧的响应，并且所述第一探测请求帧包括快速初始链路建立（FILS）能力信息，其可以指示所述第一STA 支持FILS。

公开(公告)号：US09451537B2

公开(公告)日：2016-09-20

申请号：US14398566

申请日：2013-05-10

Applicant: LG ELECTRONICS INC.

Inventor： Kiseon Ryu ,  Giwon Park ,  Jinsam Kwak

IPC: H04W48/16 ,  H04W74/08 ,  H04W84/12

CPC classification number: H04W48/16 ,  H04W74/08 ,  H04W84/12

Abstract: Disclosed are a scanning method and scanning apparatus in a wireless LAN. The scanning method in a wireless LAN comprises: a step in which an access point (AP) receives a first probe request frame from a first station (STA); a step in which the AP unicasts a first probe response frame to the first STA as a response to the first probe request frame; a step in which the AP receives a second probe request frame from a second STA for a specific time interval after unicasting the first probe response frame to the first STA; and a step in which the AP broadcasts a second probe response frame as a response to the second probe request frame for a specific time interval. Thus, scanning processes can be quickly performed.

Abstract translation: 公开了一种无线LAN中的扫描方法和扫描装置。 无线LAN中的扫描方法包括：接入点（AP）从第一站（STA）接收第一探测请求帧的步骤; 所述AP将所述第一探测响应帧单播到所述第一STA，作为对所述第一探测请求帧的响应; 所述AP在将所述第一探测响应帧单播到所述第一STA之后，从所述第二STA接收到特定时间间隔的第二探测请求帧的步骤; 以及AP在特定时间间隔内广播作为对第二探测请求帧的响应的第二探测响应帧的步骤。 因此，可以快速执行扫描处理。

公开(公告)号：US09433022B2

公开(公告)日：2016-08-30

申请号：US14378914

申请日：2013-02-14

Applicant: LG ELECTRONICS INC.

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

IPC: H04W76/02 ,  H04W48/06 ,  H04W48/14 ,  H04W48/16 ,  H04W48/10 ,  H04W84/12

CPC classification number: H04W76/10 ,  H04W4/24 ,  H04W8/005 ,  H04W48/06 ,  H04W48/10 ,  H04W48/14 ,  H04W48/16 ,  H04W84/12

Abstract: The present invention relates to a wireless communication system, and more specifically, disclosed are a method and an apparatus for filtering-based scanning in a WLAN system. A method for a station (STA) setting up a high-speed link in the wireless communication system, according to one embodiment of the present invention, comprises the steps of: transmitting a first frame comprising filtering information to at least one access point (AP); and receiving a second frame from a portion or all of the at least one AP, wherein whether to transmit the second frame can be determined on the basis of the filtering information.

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，更具体地说，本发明涉及一种在WLAN系统中进行基于过滤的扫描的方法和装置。 根据本发明的一个实施例的用于在无线通信系统中建立高速链路的站（STA）的方法包括以下步骤：将包括过滤信息的第一帧发送到至少一个接入点（AP ）; 以及从所述至少一个AP的一部分或全部接收第二帧，其中是否可以基于所述过滤信息来确定是否发送所述第二帧。

公开(公告)号：US09432921B2

公开(公告)日：2016-08-30

申请号：US14759156

申请日：2014-01-10

Applicant: LG ELECTRONICS INC.

Inventor： Giwon Park ,  Kiseon Ryu ,  Hangyu Cho

IPC: H04W4/00 ,  H04W48/16 ,  H04M11/00 ,  H04W84/12

CPC classification number: H04W48/16 ,  H04W84/12

Abstract: A method and a device for performing active scanning are disclosed. The method for active scanning of a STA comprises the steps of: transmitting a probe request frame that contains channel monitoring type information in a scanning channel; determining whether the scanning channel is in a busy state until a MinimumChannelTime; determining whether a PPDU including a valid PLCP header is received in the scanning channel until the MinimumChannelTime; and determining a time for monitoring a probe response frame transmitted by the AP in the scanning channel based on whether the PPDU is received until the MinimumChannelTime and channel monitoring type information, when the scanning channel is in the busy state, wherein the channel monitoring type information can contain information on a type with which the STA monitors the probe response frame in the scanning channel.

Abstract translation: 公开了一种执行主动扫描的方法和装置。 主动扫描STA的方法包括以下步骤：在扫描信道中发送包含信道监视类型信息的探测请求帧; 确定扫描通道是否处于忙状态，直到MinimumChannelTime为止; 确定在扫描信道中是否接收到包含有效的PLCP头的PPDU，直到MinimumChannelTime为止; 以及当所述扫描信道处于忙状态时，基于是否接收到所述PPDU直到所述最小信道时间和信道监视类型信息来确定用于监视由所述AP在所述扫描信道中发送的探测响应帧的时间，其中，所述信道监视类型信息 可以包含STA监视扫描通道中的探测响应帧的类型的信息。

公开(公告)号：US09380602B2

公开(公告)日：2016-06-28

申请号：US14431690

申请日：2013-10-16

Applicant: LG ELECTRONICS INC.

Inventor： Giwon Park ,  Kiseon Ryu ,  Jinsoo Choi ,  Hangyu Cho

IPC: H04M3/42 ,  H04W72/00 ,  H04W74/00 ,  H04W74/08 ,  H04W72/04 ,  H04W84/12 ,  H04W48/14

CPC classification number: H04W74/008 ,  H04W48/14 ,  H04W72/0406 ,  H04W74/0808 ,  H04W84/12

Abstract: A method and an apparatus for accessing a channel in a wireless LAN. A method for a station (STA) accessing a channel may comprise: a step of the STA receiving an access distribution element through a passive scanning frame; the STA selecting an access random variable based on the access distribution element; a step of the STA determining a minimum value of a passive scanning-specific competition window based on the access random variable; and the STA accessing the channel based on a back off time that is determined based on the passive scanning-specific competition window.

Abstract translation: 一种用于访问无线LAN中的信道的方法和装置。 用于站（STA）访问信道的方法可以包括：STA通过被动扫描帧接收访问分发单元的步骤; 所述STA基于所述访问分发元素选择访问随机变量; 所述STA基于所述访问随机变量确定被动扫描专用竞赛窗口的最小值的步骤; 并且STA基于基于被动扫描专用竞赛窗口确定的退出时间来访问该频道。

公开(公告)号：US20160007275A1

公开(公告)日：2016-01-07

申请号：US14443124

申请日：2014-04-29

Applicant: LG ELECTRONICS INC.

Inventor： Giwon Park ,  Hangyu Cho ,  Kiseon Ryu

IPC: H04W48/16 ,  H04W48/10

CPC classification number: H04W48/14 ,  H04W8/22 ,  H04W48/10 ,  H04W48/16 ,  H04W84/12

Abstract: Disclosed are a method and an apparatus for active scanning in a wireless LAN. The method for active scanning in a wireless LAN may comprise the steps of: a first station (STA) transmitting a first probe request frame to an access point (AP); and a first STA receiving a probe response frame from the AP, wherein the probe response frame is a response for the probe request frame, and the first probe request frame comprises fast initial link setup (FILS) capability information which can indicate whether the first STA supports FILS.

Abstract translation: 公开了一种在无线LAN中主动扫描的方法和装置。 在无线LAN中主动扫描的方法可以包括以下步骤：向接入点（AP）发送第一探测请求帧的第一站（STA）; 以及从AP接收探测响应帧的第一STA，其中所述探测响应帧是所述探测请求帧的响应，并且所述第一探测请求帧包括快速初始链路建立（FILS）能力信息，其可以指示所述第一STA 支持FILS。

公开(公告)号：US20150222447A1

公开(公告)日：2015-08-06

申请号：US14424928

申请日：2013-09-13

Applicant: LG ELECTRONICS INC.

Inventor： Giwon Park ,  Kiseon Ryu ,  Jinsam Kwak

IPC: H04L12/18 ,  H04L5/00 ,  H04W4/06

CPC classification number: H04L12/189 ,  H04L5/0044 ,  H04L5/0053 ,  H04W4/06 ,  H04W48/16 ,  H04W84/12

Abstract: Disclosed are a method and an apparatus for scanning in a wireless LAN. A method for scanning by a station (STA) can comprise the steps of: the STA generating a MAC layer management entity (MLME).SCAN.request.primitive comprising information for a basic service set identifier (BSSID) and a service set identifier (SSID); the STA generating a probe request frame comprising wildcard BSSID and SSID; the STA multi-casting the probe request frame to a first AP forming an extended service set (ESS) network using a particular SSID; and the STA receiving a probe response frame broadcast from the first AP as a response to the probe request frame.

Abstract translation: 公开了一种用于在无线LAN中进行扫描的方法和装置。 一种用于由站（STA）扫描的方法可以包括以下步骤：STA生成MAC层管理实体（MLME）.SCAN请求包括用于基本服务集标识符（BSSID）和服务集标识符 SSID）; 所述STA生成包括通配符BSSID和SSID的探测请求帧; STA将探测请求帧多播到使用特定SSID形成扩展服务集（ESS）网络的第一AP; STA接收从第一AP广播的探测响应帧作为对探测请求帧的响应。

公开(公告)号：US20150208330A1

公开(公告)日：2015-07-23

申请号：US14419434

申请日：2013-08-08

Applicant: LG ELECTRONICS INC.

Inventor： Giwon Park ,  Kiseon Ryu ,  Hangyu Cho ,  Jinsam Kwak

IPC: H04W48/16 ,  H04W76/02

CPC classification number: H04W48/16 ,  H04W76/10 ,  H04W84/12

Abstract: A scanning method and apparatus in wireless LAN is disclosed. The method comprises determining, by an access point (AP), whether to accommodate a station (STA) conducting an initial link setup and transmitting, by the AP, a frame to the STA, the frame including scanning redirection information for the STA to switch other channel, other band, or a neighbor AP when the AP determines not to accommodate the STA. The scanning redirection information includes a band field and a channel field. The band field indicating a band in which the STA conducts the initial link setup when the STA conducts the initial link setup from current band to the other band. The channel field indicating a channel in which the STA conducts the initial link setup when the STA conducts the initial link setup from current channel to the other channel.

Abstract translation: 公开了一种无线LAN中的扫描方法和装置。 该方法包括由接入点（AP）确定是否容纳进行初始链路建立的站（STA），并由AP向STA发送一帧到该STA，该帧包括STA切换的扫描重定向信息 当AP确定不适应STA时，其他信道，其他频带或邻居AP。 扫描重定向信息包括带场和信道字段。 指示当STA进行从当前频带到另一频带的初始链路建立时STA进行初始链路建立的频带的频带域。 指示当STA进行从当前信道到另一个信道的初始链路建立时STA进行初始链路建立的信道的信道字段。

公开(公告)号：US20150172996A1

公开(公告)日：2015-06-18

申请号：US14418054

申请日：2013-08-26

Applicant: LG ELECTRONICS INC.

Inventor： Giwon Park ,  Kiseon Ryu ,  Jinsoo Choi ,  Hangyu Cho ,  Jinsam Kwak

IPC: H04W48/06 ,  H04W48/12 ,  H04W74/08 ,  H04W74/00

CPC classification number: H04W48/06 ,  H04W48/12 ,  H04W74/006 ,  H04W74/0875 ,  H04W84/12

Abstract: A method and device for performing channel access in a wireless LAN are disclosed. An initial channel access method of a station STA in a wireless LAN may include: receiving, from an access point (AP) by the station STA, a frame including information on a channel state, information on a channel access protection section and information on a station STA capable of performing channel access in the channel access protection section; determining a channel access priority by a station STA when the information on the channel state indicates that a wireless link is in a congestion state; and performing initial channel access in the channel access protection section based on the channel access priority determined by the station STA and the information on the station STA capable of performing channel access in the channel access protection section.

Abstract translation: 公开了一种用于在无线LAN中执行信道接入的方法和装置。 无线LAN中的站STA的初始信道接入方法可以包括：从站STA的接入点（AP）接收包括关于信道状态的信息的帧，关于信道访问保护部分的信息和关于信道访问保护部分的信息 能够在信道接入保护部分中执行信道接入的台站STA; 当关于信道状态的信息指示无线链路处于拥塞状态时，由站STA确定信道接入优先级; 并且基于由站STA确定的信道访问优先级和能够在信道访问保护部分中执行信道访问的站STA的信息，在信道接入保护部分中执行初始信道接入。