公开(公告)号：US10187796B2

公开(公告)日：2019-01-22

申请号：US15205333

申请日：2016-07-08

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xun Yang ,  Yuan Tao ,  Mu Zhao

IPC: H04W12/06

Abstract: This application discloses an authentication and association method and system. An access point AP receives an authentication request sent by a station STA that needs to establish a connection to a service device; the AP establishes authentication with the STA; after the STA sends an association request to the service device, the AP receives an authentication result query request sent by the service device, and sends a result of the authentication result query request to the service device, so that the service device determines whether to establish an association with the STA; if the result shows that the STA is authenticated by the AP, the service device can establish an association with the STA; or if the result shows that the STA fails to be authenticated by the AP, the STA cannot establish an association with the service device.

公开(公告)号：US10122498B2

公开(公告)日：2018-11-06

申请号：US15012561

申请日：2016-02-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xun Yang ,  Yi Luo ,  Jing Li

IPC: H04L1/16 ,  H04L29/08 ,  H04B7/04 ,  H04B7/0452 ,  H04L1/00

Abstract: Embodiments of the present invention provide a communication method, apparatus and system for multiple access points. The method includes: simultaneously sending, by a primary sending terminal and a secondary sending terminal, data corresponding to each receiving terminal to each receiving terminal through a shared channel; sending, by the primary sending terminal, BAR corresponding to the data to each receiving terminal; receiving, by the primary sending terminal, BA corresponding to the BAR and sent by each receiving terminal; and if the BA indicates that the data are correctly received by each receiving terminal, clearing the data cached in the primary sending terminal, and if the BA indicates that the data is not correctly received by each receiving terminal, retransmitting data which is not correctly received, and clearing correctly received data cached in the primary sending terminal.

公开(公告)号：US20180295221A1

公开(公告)日：2018-10-11

申请号：US16004227

申请日：2018-06-08

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jian Yu ,  Xun Yang ,  Meilu Lin ,  Yuchen Guo

IPC: H04L29/08

Abstract: Embodiments of the present disclosure disclose a method and an apparatus for transmitting a trigger frame in a wireless local area network. The method for transmitting a trigger frame in a wireless local area network includes: generating, by an access point, a trigger frame carrying a target media access control MAC function, where the trigger frame includes indication information, the indication information is used to instruct a first station to send a MAC frame corresponding to the target MAC function, and the indication information is used to instruct a second station not to perform the target MAC function; and sending, by the access point, the trigger frame. In the present disclosure, the indication information is used to instruct the first station to send the MAC frame corresponding to the target MAC function without limiting the second station, so that data sending manners of the first station and the second station can be flexibly controlled.

公开(公告)号：US10091782B2

公开(公告)日：2018-10-02

申请号：US15238430

申请日：2016-08-16

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xun Yang

IPC: H04L1/00 ,  H04W72/04 ,  H04W48/00 ,  H04W52/02 ,  H04W48/08 ,  H04W88/08

Abstract: A data communication method and system are provided. In the method, a station sends sequence numbers to at least two APs, where the sequence numbers indicate a sequence in which the APs respond to the station. The station broadcasts a wake-up message to the at least two APs. The station receives acknowledgement messages sequentially returned by the at least two APs according to the sequence numbers of the APs. The station determines according to the sequentially returned acknowledgement messages, whether the corresponding APs need to transmit the downlink data. The station sequentially completes, according to the sequence numbers, downlink data transmission with the APs.

公开(公告)号：US10028242B2

公开(公告)日：2018-07-17

申请号：US15134062

申请日：2016-04-20

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xun Yang ,  Yi Luo

IPC: H04W4/00 ,  H04W56/00

Abstract: The present disclosure provide a transmission method and a device, which relate to the technical field of communications and reduce overhead and improve work efficiency in an application of cooperative transmission in aspects of synchronization, sharing of information such as data and the like, obtaining of channel information and data transmission. Meanwhile application scenarios may also be extended. The method specifically includes: obtaining, by an access point AP, a parameter value, wherein the parameter value is a frequency difference between a crystal oscillator frequency of the AP and a reference crystal oscillator frequency of a reference AP or a delay difference of the AP with respect to the reference AP; compensating, by the AP, a phase difference or a time difference according to the parameter value when both of the AP and the reference AP send data. The present disclosure is applied to an application of a cooperative transmission.

公开(公告)号：US20180123727A1

公开(公告)日：2018-05-03

申请号：US15853937

申请日：2017-12-25

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jian YU ,  Xun Yang

IPC: H04L1/00 ,  H04L25/02 ,  H04W24/10

Abstract: A WLAN link adaptation method and a network device are provided, and can provide accurate link adaptation for each user in an OFDMA communications system. Embodiments of the present application include: obtaining, by a first network device, a target channel information measurement result, where the target channel information measurement result is a measurement result obtained by measuring channel information over target bandwidth; and determining, by the first network device, a modulation and coding scheme MCS of a link according to the target channel information measurement result.

公开(公告)号：US20180014316A1

公开(公告)日：2018-01-11

申请号：US15713247

申请日：2017-09-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yuchen Guo ,  Meilu Lin ,  Xun Yang ,  Jian Yu

IPC: H04W72/12 ,  H04W74/08 ,  H04W72/04

CPC classification number: H04W72/121 ,  H04W52/0216 ,  H04W52/0219 ,  H04W72/0446 ,  H04W72/1289 ,  H04W74/06 ,  H04W74/08 ,  Y02D70/00 ,  Y02D70/10 ,  Y02D70/12 ,  Y02D70/126 ,  Y02D70/1262 ,  Y02D70/14 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/20 ,  Y02D70/26

Abstract: An access point generates a beacon frame that carries a trigger frame information element comprising sending information of a trigger frame for indicating a sending period of the trigger frame; and sends the beacon frame. In this case, the station switches to an active state, and receives the trigger frame by listening to the channel, and the station performs uplink transmission according to indication of the trigger frame after receiving the trigger frame. In this way, when signaling overheads are not increased and reliability is ensured, a station can learn of a sending time of a trigger frame, and the station remains in a receiving state in an appropriate period of time.

公开(公告)号：US20170374609A1

公开(公告)日：2017-12-28

申请号：US15698563

申请日：2017-09-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xun Yang ,  Mu Zhao ,  Yanping Jiang

IPC: H04W48/16 ,  H04W4/06 ,  H04W52/02 ,  H04L12/18 ,  H04W72/00 ,  H04W72/04 ,  H04W88/08 ,  H04W4/08 ,  H04W52/00 ,  H04W76/00 ,  H04W84/12

CPC classification number: H04W48/16 ,  H04L12/189 ,  H04W4/06 ,  H04W4/08 ,  H04W52/00 ,  H04W52/0216 ,  H04W52/0219 ,  H04W72/005 ,  H04W72/042 ,  H04W74/006 ,  H04W76/11 ,  H04W76/40 ,  H04W84/12 ,  H04W88/08 ,  Y02D70/00

Abstract: The method includes: sending, by an access point (AP), a multicast association identifier (MID) of a multicast group to a station (STA), where one multicast group has one or more MIDs, and each MID corresponds to one multicast group and a receiving period of a STA in the multicast group; sending, by the AP, a delivery traffic indication map (DTIM) beacon frame to the STA, where the DTIM beacon frame includes the MID and is used for indicating a multicast group that has multicast information to be sent to the STA; and sending, by the AP, the multicast information of the multicast group, where the multicast information carries information about the MID or information associated with the MID, and the multicast information is received by the STA. The technical solutions of the present invention reduce resource waste of a STA.

公开(公告)号：US20170366364A1

公开(公告)日：2017-12-21

申请号：US15690927

申请日：2017-08-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Mu Zhao ,  Xun Yang ,  Yanping Jiang

IPC: H04L12/18 ,  H04W4/06 ,  H04L29/12 ,  H04W76/02 ,  H04W76/00 ,  H04W72/00

Abstract: A multicast packet transmission method and an apparatus relate to the communications field and define how multicast data is sent to stations (STAs) using a multicast association identifier (AID). The method includes allocating, by an access point (AP), a corresponding multicast AID to STAs, where the multicast AID is set in a short media access control (MAC) header of a multicast packet; and sending, by the AP, the multicast packet to at least two STAs, so that the at least two STAs determine, according to the multicast AID, whether the multicast packet is a multicast packet corresponding to the at least two STAs, where the at least two STAs are in a same multicast group.

公开(公告)号：US09722821B2

公开(公告)日：2017-08-01

申请号：US14661876

申请日：2015-03-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Gong Zhang ,  Xun Yang ,  Pei Xiao ,  Zihuai Lin

IPC: H04L25/03 ,  H04B7/04 ,  H04B7/06 ,  H04L1/00 ,  H04L25/02 ,  H04L27/02 ,  H04L27/20 ,  H04L27/34 ,  H04J11/00 ,  H04L1/06 ,  H04L1/12

CPC classification number: H04L25/03159 ,  H04B7/0434 ,  H04B7/0465 ,  H04B7/0617 ,  H04J11/0063 ,  H04L1/0026 ,  H04L1/0028 ,  H04L1/0036 ,  H04L1/0073 ,  H04L1/0606 ,  H04L25/0204 ,  H04L25/03343 ,  H04L25/03968 ,  H04L27/02 ,  H04L27/2082 ,  H04L27/34 ,  H04L2001/125

Abstract: A precoding method, a precoding apparatus, a Frequency Domain Equalization (FDE) method, and an FDE apparatus are provided in the embodiments of the present invention. The precoding method includes: performing offset modulation for a transmitting signal vector; calculating a precoding matrix according to the offset-modulated transmitting signal vector and a receiver decision signal vector, where the precoding matrix is used for performing precoding for the transmitting signal vector; and performing precoding for the transmitting signal vector according to the precoding matrix. Linear precoding is performed by using the offset-modulated signal on the transmitter, and therefore, the interference caused by multiple antennas and multipath propagation is reduced, the system BER is reduced, and the complexity of implementation is low.