公开(公告)号：US20150163646A1

公开(公告)日：2015-06-11

申请号：US14623112

申请日：2015-02-16

Applicant: Huawei Technologies Co., ltd.

Inventor： Mu Zhao ,  Yanping Jiang ,  Bin Zhen

IPC: H04W4/08

CPC classification number: H04W4/08 ,  H04L12/185 ,  H04L12/189

Abstract: A multicast information transmission method and device. The method includes sending a delivery traffic indication map (DTIM) beacon frame to a station (STA), where the DTIM beacon frame is used to indicate multicast groups which have multicast information to be sent; and according to an order of a multicast identifier (ID) of the multicast groups which have multicast information to be sent, in preset sending intervals, sending multicast information of the multicast groups which have multicast information to be sent, so that the STA receives multicast information of a multicast group to which the STA belongs in a receiving interval corresponding to the multicast group to which the STA belongs. The technical solutions in the present invention reduce STA resource waste.

Abstract translation: 一种组播信息传输方法和装置。 该方法包括向站（STA）发送传送业务指示映射（DTIM）信标帧，其中DTIM信标帧用于指示具有要发送的多播信息的多播组; 根据具有要发送的组播信息的组播组播组播标识符（ID）的顺序，按照预设的发送间隔，发送具有要发送的组播信息的组播组的组播信息，使STA接收组播 在与STA所属的组播组相对应的接收间隔中，STA所属的组播组的信息。 本发明的技术方案减少STA资源浪费。

公开(公告)号：US20150109921A1

公开(公告)日：2015-04-23

申请号：US14583463

申请日：2014-12-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Mu Zhao ,  Yanping Jiang ,  Bin Zhen

IPC: H04W28/06

CPC classification number: H04W28/06 ,  H04W8/22 ,  H04W76/28

Abstract: A method includes: obtaining, by a transmit end, switching information of a STA, where the switching information includes that the STA switches to a TIM STA or the STA switches to a Non-TIM STA; and sending, by the transmit end, a first message to a receive end, where the first message includes a flag bit, and the flag bit identifies the switching information. According to the embodiments of the present invention, both a STA and an AP can learn switching of a STA working mode, so that correct switching of the STA can be implemented, and the AP can perform correct processing according to a switching situation of the STA.

Abstract translation: 一种方法包括：通过发送端获得STA的切换信息，其中切换信息包括STA切换到TIM STA或STA切换到非TIM STA; 并且由所述发送端向接收端发送第一消息，其中所述第一消息包括标志位，并且所述标志位标识所述切换信息。 根据本发明的实施例，STA和AP都可以学习STA工作模式的切换，从而可以实现STA的正确切换，并且AP可以根据STA的切换情况执行正确的处理 。

公开(公告)号：US20150071233A1

公开(公告)日：2015-03-12

申请号：US14543620

申请日：2014-11-17

Applicant: Huawei Technologies Co., Ltd.

Inventor： Li Wang ,  Yanping Jiang ,  Bin Zhen

IPC: H04W72/08

CPC classification number: H04W72/085 ,  H04L1/0026 ,  H04L5/006 ,  H04L5/0094 ,  H04W84/12

Abstract: The present invention provides a method and device for allocating WLAN channel resources and a wireless local area network communication system. The method includes: obtaining subcarrier allocation information, where the subcarrier allocation information is used to identify a subcarrier or a subcarrier group used to bear data, where channel quality of a subchannel where the subcarrier or the subcarrier group is located is greater than or equal to a judgment threshold; and sending data on the subcarrier according to the subcarrier allocation information. The present invention reduces a waste of transmit power of a station, and can increase a modulation order because no restriction is imposed by pull-down of a subchannel with very poor channel quality.

Abstract translation: 本发明提供一种用于分配WLAN信道资源的方法和装置以及无线局域网通信系统。 该方法包括：获得子载波分配信息，其中子载波分配信息用于识别用于承载数据的子载波或子载波组，其中子载波或子载波组所在的子信道的信道质量大于或等于 判断阈值 并根据子载波分配信息在子载波上发送数据。 本发明减少了站的发射功率的浪费，并且可以增加调制阶数，因为通过具有非常差的信道质量的子信道的下拉来施加限制。