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    Method and device for updating system information in wireless LAN system
    142.
    发明授权
    Method and device for updating system information in wireless LAN system 有权
    无线局域网系统更新系统信息的方法和装置

    公开(公告)号：US09521609B2

    公开(公告)日：2016-12-13

    申请号：US14421416

    申请日：2013-08-13

    Applicant: LG ELECTRONICS INC.

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

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

    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.

    Abstract translation: 本发明涉及一种在无线LAN系统中更新系统信息的方法和装置。 用于更新无线通信系统的站（STA）中的系统信息的方法可以包括由存储系统信息的STA和先前链接的优选接入点（AP）的配置改变计数值来发送用于 主动扫描到首选AP; 并从优选AP接收探测响应帧。 优选地，探测请求帧包括先前从优选AP获取的配置改变计数字段，并且如果探测请求帧中包括的配置改变计数字段的值与优选AP的当前配置改变计数值不同，则 探测响应帧可以包括应由STA更新的系统信息的一个或多个元素。

    Method by which stations operating in power save mode in wireless LAN systems transmit and receive frames, and apparatus for supporting same
    143.
    发明授权
    Method by which stations operating in power save mode in wireless LAN systems transmit and receive frames, and apparatus for supporting same 有权
    在无线LAN系统中以节电模式工作的站发送和接收帧的方法，以及用于支持它的装置

    公开(公告)号：US09491700B2

    公开(公告)日：2016-11-08

    申请号：US14376025

    申请日：2013-01-30

    Applicant: LG ELECTRONICS, INC.

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

    IPC: H04W52/02 ,  H04W84/12

    CPC classification number: H04W52/0225 ,  H04W84/12 ,  Y02D70/142 ,  Y02D70/21 ,  Y02D70/22

    Abstract: The present invention relates to a method by which a station (STA) which operates in power save mode in a wireless LAN system transmits and receives frames. The method includes the steps of: obtaining a channel access authority on the basis of at least one slot time, wherein each slot time is the unit time when a channel is maintained in an idle state for a channel access by the STA; transmitting a power save (PS) poll frame requesting the transmission of a buffered frame to an access point (AP); and receiving a response frame from the AP in response to the PS poll frame. The length of each slot time is set to be longer than the transmission time of the PS poll frame.

    Abstract translation: 本发明涉及一种在无线LAN系统中以省电模式操作的站（STA）发送和接收帧的方法。 该方法包括以下步骤：基于至少一个时隙时间获得信道接入权限，其中每个时隙时间是当信道被维持在空闲状态以由STA进行信道接入时的单位时间; 发送请求传输缓冲帧到接入点（AP）的省电（PS）轮询帧; 以及响应于所述PS轮询帧从所述AP接收响应帧。 每个时隙时间的长度设置为长于PS轮询帧的传输时间。

    Apparatus and method for transmitting and receiving multicast data in wireless communication system
    145.
    发明授权
    Apparatus and method for transmitting and receiving multicast data in wireless communication system 有权
    在无线通信系统中发送和接收组播数据的装置和方法

    公开(公告)号：US09385879B2

    公开(公告)日：2016-07-05

    申请号：US14241811

    申请日：2012-10-10

    Applicant: LG ELECTRONICS INC.

    Inventor： Jeongki Kim ,  Youngsoo Yuk

    IPC: H04L12/18 ,  H04W4/06 ,  H04W4/00 ,  H04L29/06

    CPC classification number: H04L12/189 ,  H04L69/22 ,  H04W4/06 ,  H04W4/70

    Abstract: An apparatus and method for transmitting/receiving multicast data in a wireless communication system are disclosed. The method of receiving multicast data at a machine-to-machine (M2M) device in a wireless communication system includes: receiving, from a base station (BS), an M2M multicast connection identifier for an M2M multicast service, assigned to the M2M device; receiving a message including control information about transmission of the multicast data and multicast data including an M2M multicast connection identifier from the BS; and determining whether the M2M multicast connection identifier included in the multicast data corresponds to the M2M multicast connection identifier assigned by the BS.

    Abstract translation: 公开了一种用于在无线通信系统中发送/接收组播数据的装置和方法。 在无线通信系统中的机器对机器（M2M）设备接收组播数据的方法包括：从基站（BS）接收分配给M2M设备的M2M组播业务的M2M组播连接标识符 ; 从所述BS接收包括关于所述多播数据的传输和包括M2M多播连接标识符的多播数据的控制信息的消息; 以及确定包括在多播数据中的M2M多播连接标识符是否对应于由BS分配的M2M多播连接标识符。

    Method for receiving downlink signal by station in wireless communication system
    146.
    发明授权
    Method for receiving downlink signal by station in wireless communication system 有权
    用于在无线通信系统中按站接收下行链路信号的方法

    公开(公告)号：US09319902B2

    公开(公告)日：2016-04-19

    申请号：US14420611

    申请日：2013-08-09

    Applicant: LG ELECTRONICS INC.

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

    IPC: H04W4/00 ,  H04W24/02 ,  H04W76/02 ,  H04W84/12 ,  H04W88/08

    CPC classification number: H04W24/02 ,  H04W76/19 ,  H04W84/12 ,  H04W88/08

    Abstract: The invention relates to a method for receiving a downlink signal from an access point (AP) by a station (STA) in a wireless communication system, comprising the steps of: transmitting an uplink frame; and receiving a response frame as a response to the uplink frame. A terminal performs a re-association with the AP when it is recognized, via the response frame, that the AP has been restarted.

    Abstract translation: 本发明涉及一种在无线通信系统中由站（STA）从接入点（AP）接收下行链路信号的方法，包括以下步骤：发送上行链路帧; 以及接收响应帧作为对所述上行链路帧的响应。 当通过响应帧识别出AP被重新启动时，终端与AP进行重新关联。

    METHOD FOR INDICATING CHANNEL ACCESS TYPE IN WIRELESS COMMUNICATION SYSTEM, AND APPARATUS THEREFOR
    148.
    发明申请
    METHOD FOR INDICATING CHANNEL ACCESS TYPE IN WIRELESS COMMUNICATION SYSTEM, AND APPARATUS THEREFOR 有权
    无线通信系统中通道接入类型的指示方法及其设备

    公开(公告)号：US20150103767A1

    公开(公告)日：2015-04-16

    申请号：US14390330

    申请日：2013-06-27

    Applicant: LG ELECTRONICS INC.

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

    IPC: H04W74/06 ,  H04W52/02

    CPC classification number: H04W52/0216 ,  H04W74/008 ,  H04W74/06 ,  H04W84/12 ,  Y02D70/1222 ,  Y02D70/1224 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/168 ,  Y02D70/21 ,  Y02D70/22

    Abstract: Disclosed is a method for a station (STA) for accessing a channel in a wireless communication system. The method for a STA for accessing a channel in a wireless communication system comprises the steps of: receiving a beacon frame comprising a traffic indicator map (TIM); and transmitting a power save (PS)-Poll frame if buffered traffic is indicated by TIM to the STA, wherein the PS-Poll frame is transmitted during a PS-Poll dedicated restricted access window (RAW) by and/or during an additional RAW, the PS-Poll dedicated RAW being allocated to transmit the PS-Poll frame, and the additional RAW being additionally allocated subsequent to the PS-Poll-dedicated RAW.

    Abstract translation: 公开了一种用于在无线通信系统中访问信道的站（STA）的方法。 用于在无线通信系统中访问信道的STA的方法包括以下步骤：接收包括业务指示符映射（TIM）的信标帧; 以及如果缓存的业务由TIM指示给STA，则发送功率节省（PS）-Poll帧，其中PS-Poll帧在PS-Poll专用限制访问窗口（RAW）期间和/或期间附加RAW PS-Poll专用RAW被分配以发送PS-Poll帧，并且额外分配在PS-Poll专用RAW之后的附加RAW。

    METHOD FOR TRANSMITTING AND RECEIVING TRAFFIC INDICATION MAPS IN WIRELESS COMMUNICATION SYSTEMS AND APPARATUS FOR SAME
    149.
    发明申请
    METHOD FOR TRANSMITTING AND RECEIVING TRAFFIC INDICATION MAPS IN WIRELESS COMMUNICATION SYSTEMS AND APPARATUS FOR SAME 有权
    在无线通信系统中传输和接收交通指示的方法及其设备

    公开(公告)号：US20150063232A1

    公开(公告)日：2015-03-05

    申请号：US14378596

    申请日：2013-02-18

    Applicant: LG Electronics Inc.

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

    IPC: H04W28/02

    CPC classification number: H04W28/0278 ,  H04W4/70 ,  H04W28/0263 ,  H04W72/1289

    Abstract: The present invention relates to a method for transmitting and receiving a traffic indication map in a wireless communication system, and to an apparatus for same. More particularly, the method includes a step of transmitting a traffic indication map (TIM) to a station (STA) through a beacon frame, wherein the TIM can include a bitmap field configured of one or more sub-block bitmaps for indicating whether buffered downlink data exists for an STA which is grouped to one or more sub-blocks, and a block control field indicating an encoding scheme of the bitmap field.

    Abstract translation: 本发明涉及一种在无线通信系统中发送和接收业务指示图的方法及其装置。 更具体地，该方法包括通过信标帧向站（STA）发送业务指示映射（TIM）的步骤，其中，所述TIM可以包括由一个或多个子块位图配置的位图字段，用于指示是否缓冲的下行链路 对于分组为一个或多个子块的STA存在数据，以及指示位图字段的编码方案的块控制字段。

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