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公开(公告)号：US09641289B2
公开(公告)日：2017-05-02
申请号：US14515096
申请日：2014-10-15
Applicant: Huawei Technologies Co., Ltd.
Inventor： Pei Liu
CPC classification number: H04L1/08 , H04J3/16 , H04L1/1887 , H04L1/1893 , H04L5/0055 , H04W74/006
Abstract: The disclosed is a data transmission method and apparatus configured to establish a frequency hopping-retransmission mechanism in a CFP of a superframe and switch a channel accordingly. The method provided by an embodiment includes: selecting two channels as a prescribed channel and a spare channel; dividing a CFP of a superframe into three SCFPs, where a second SCFP is used to re-transmit data that a node fails to transmit in a first SCFP, a third SCFP is used to re-transmit data that the node fails to transmit in the second SCFP, and a timeslot position of each node in the first SCFP is the same as in the second SCFP; broadcasting a beacon frame on the prescribed channel in a beacon period of the superframe, where the beacon frame includes channel selection information and timeslot division information; receiving data from the node; and transmitting an acknowledgement frame.
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公开(公告)号：US09603118B2
公开(公告)日：2017-03-21
申请号：US15043741
申请日：2016-02-15
Applicant: Huawei Technologies Co., Ltd.
Inventor： Pei Liu
IPC: H04W24/00 , H04W64/00 , H04B17/318
CPC classification number: H04W64/00 , H04B17/318
Abstract: Embodiments disclose a method and device for determining a node movement. The method includes: when a first node determines that the first node is currently in an abnormal state, broadcasting at least two RSSI request messages, and receiving signal strength measurement values that are returned by a second node and separately obtained by means of measurement for at least two RSSI request messages in the at least two RSSI request messages broadcast by the first node. The method also includes separately calculating at least two path loss values between the first node and the second node according to the at least two received signal strength measurement values; and determining that the first node moves when it is determined that a quantity of second nodes, of which at least two path loss values are all different, is greater than a set threshold.
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公开(公告)号：US20160190686A1
公开(公告)日：2016-06-30
申请号：US15064354
申请日：2016-03-08
Applicant: Huawei Technologies Co., Ltd.
Inventor： BO GAO , Depeng Jin , Dejian Li , Jiamin Chen , Pei Liu
IPC: H01Q3/24
CPC classification number: H01Q3/24 , H04B7/0617 , H04B7/0695 , H04B7/086 , H04B7/088 , H04L27/2607
Abstract: The present invention relates to the field of communications technologies, and discloses a beam tracking method, apparatus, and system, so as to ensure rapid discovery and to switch from an optimal link to a backup link in time, or switch from a backup link to an optimal link, thereby effectively improving a throughput of a system link. The beam tracking method includes: transmitting, by a beam tracking initiator, a beam tracking request to a beam tracking responder; receiving, by the beam tracking initiator, an enhanced beam tracking training auxiliary sequence transmitted, according to the enhanced beam tracking request, by the beam tracking responder; and when it is determined according to a reception detection result of the enhanced beam tracking training auxiliary sequence that it is necessary to switch to a backup beam link, transmitting, by the beam tracking initiator, first link switching information to the beam tracking responder.
Abstract translation: 本发明涉及通信技术领域，并且公开了一种光束跟踪方法，装置和系统，以便确保快速发现并及时从最佳链路切换到备用链路，或者从备用链路切换到 最佳链路，从而有效地提高系统链路的吞吐量。 光束跟踪方法包括：通过光束跟踪发起者向光束跟踪响应器发送光束跟踪请求; 通过光束跟踪发起器接收由光束跟踪响应器根据增强的光束跟踪请求发射的增强的光束跟踪训练辅助序列; 并且当根据增强的波束跟踪训练辅助序列的接收检测结果确定需要切换到备用波束链路时，通过波束跟踪发起者将第一链路切换信息发送到波束跟踪应答器。
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公开(公告)号：US20150195855A1
公开(公告)日：2015-07-09
申请号：US14663986
申请日：2015-03-20
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Pei Liu
CPC classification number: H04W74/0816 , H04W4/70 , H04W24/02 , H04W74/08
Abstract: A channel access method and a node are disclosed. The method includes randomly selecting a backoff period XB according to a backoff exponent BE, where XB=X×aUnitBackoffPeriod, and X is an integer randomly selected from 0−(2BE−1); when X is greater than or equal to a predetermined value, determining a middle backoff, where the middle backoff is less than the backoff period, performing a backoff until the middle backoff ends and then performing a CCA; if a channel is clear, performing data transmission, and if the channel is not clear, continuing the backoff until the backoff period ends and then performing a CCA, and executing a channel access operation according to a result of the CCA performed when the backoff period ends. Therefore, data transmission is performed when a channel is clear, which can reduce a data transmission delay.
Abstract translation: 公开了一种信道接入方法和节点。 该方法包括根据退避指数BE随机选择退避周期XB，其中XB = X×aUnitBackoffPeriod，X是从0-（2BE-1）中随机选择的整数; 当X大于或等于预定值时，确定中间退避小于退避周期的中间退避，执行退避直到中间退避结束，然后执行CCA; 如果信道清除，执行数据传输，并且如果信道不清除，则继续退避直到退避周期结束，然后执行CCA，并且根据当退避周期执行的CCA的结果执行信道接入操作 结束。 因此，当信道清除时执行数据传输，这可以减少数据传输延迟。
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公开(公告)号：US20150195780A1
公开(公告)日：2015-07-09
申请号：US14663955
申请日：2015-03-20
Applicant: Huawei Technologies Co., Ltd.
Inventor： Pei Liu
CPC classification number: H04W52/0203 , H04W4/70 , H04W52/0216 , H04W52/0219 , H04W52/0229 , H04W76/28 , H04W84/18 , Y02D70/00
Abstract: A data transmission method and device are provided. The data transmission method includes determining, by a network node, that a destination sensor node of to-be-transmitted data is in an inactive period; sending, by the network node, a wake-up message to the destination sensor node, where the wake-up message is used to trigger the destination sensor node to enter a woken-up state from a dormant state of the inactive period; receiving, by the network node, a response message that is from the destination sensor node and for the wake-up message; and performing, by the network node, data transmission with the destination sensor node according to the response message. According to the embodiments of the present invention, a data transmission delay is reduced, and data transmission synchronization is ensured.
Abstract translation: 提供了一种数据传输方法和装置。 数据传输方法包括：由网络节点确定待发送数据的目的地传感器节点处于非活动时段; 由所述网络节点向所述目的地传感器节点发送唤醒消息，其中所述唤醒消息用于触发所述目的地传感器节点从所述非活动时段的休眠状态进入唤醒状态; 由所述网络节点接收来自所述目的地传感器节点和所述唤醒消息的响应消息; 以及由所述网络节点根据所述响应消息与所述目的地传感器节点进行数据传输。 根据本发明的实施例，减少了数据传输延迟，并且确保了数据传输同步。
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Patent Agency Ranking
公开(公告)号：US20150195744A1
公开(公告)日：2015-07-09
申请号：US14663900
申请日：2015-03-20
Applicant: Huawei Technologies Co., Ltd.
Inventor： Pei Liu
CPC classification number: H04W28/085 , H04W16/10 , H04W16/14 , H04W28/20 , H04W28/26 , H04W72/0453
Abstract: A channel negotiation method, device, and system are provided. The channel negotiation method includes obtaining channel occupancy information; sending, according to the channel occupancy information, a channel negotiation execution frame that includes a channel switching manner to a network device in at least one established network, so that the network device in the at least one established network switches a current operating channel according to the channel switching manner to generate an idle channel; and receiving a channel negotiation execution acknowledgement frame fed back by the network device in the at least one established network, and performing a networking operation on the idle channel. The channel negotiation method provided in the embodiments of the present invention can improve a bandwidth utilization ratio and a data transmission rate.
Abstract translation: 提供了一种通道协商方法，设备和系统。 信道协商方法包括获取信道占用信息; 根据信道占用信息，向至少一个建立的网络中的网络设备发送包括信道切换方式的信道协商执行帧，使得至少一个建立的网络中的网络设备根据 信道切换方式生成空闲信道; 以及接收由所述至少一个建立的网络中的所述网络设备反馈的信道协商执行确认帧，并对所述空闲信道进行联网操作。 本发明实施例提供的信道协商方法可以提高带宽利用率和数据传输速率。
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公开(公告)号：US10568108B2
公开(公告)日：2020-02-18
申请号：US15866253
申请日：2018-01-09
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Abstract: Examples of the present disclosure provide a channel access period allocation method. The method includes: receiving, by an access point (AP), first information sent by a first station (STA) for requesting a dynamic service period (DSP) from the AP; and sending, by the AP, second information to the first STA to instruct the first STA to send a data frame to the AP in a first DSP, where a start time of the first DSP falls within a first preset time period following an end time of an SP of the first STA, and the first DSP requested by the first STA is pre-allocated to a second STA having a priority that is lower than that of the first STA, where a time delay of the first STA for sending the data frame to the AP satisfies a time delay requirement of a quality of service QoS in the first preset time period.
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公开(公告)号：US10079997B2
公开(公告)日：2018-09-18
申请号：US15607238
申请日：2017-05-26
Applicant: Huawei Technologies Co., Ltd.
IPC: H04N7/15 , H04N21/262 , H04N21/234 , H04N21/6373 , H04N21/647 , H04N7/18
CPC classification number: H04N7/152 , H04N7/155 , H04N7/181 , H04N21/234 , H04N21/26275 , H04N21/6373 , H04N21/64792
Abstract: A multi-video stream transmission method and a device, where an access point sets an initial sending time and a sending period of an intra frame (I frame) of each station (STA) associated with the access point, and allocates an I frame service period and a predictive frame (P frame) service period to each STA according to the initial sending time and the sending period of the I frame of each STA, where each STA exclusively occupies a channel in the I frame service period and the P frame service period such that I frame sending time of STAs are staggered, network load balance is achieved, and it is ensured that a latency of each STA meets a quality of service (QoS) requirement.
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公开(公告)号：US09936497B2
公开(公告)日：2018-04-03
申请号：US14734906
申请日：2015-06-09
Inventor： Pei Liu , Weixia Zou , Yibo Wang
CPC classification number: H04W72/0446 , H04W28/16 , H04W48/12 , H04W72/12 , H04W72/1278
Abstract: Embodiments of the present invention disclose a node scheduling method, where the method includes: configuring, for a node, a working period matched with a performance indicator of the node, where duration of the working period is an integer multiple of duration of a super frame, and the super frame is a super frame corresponding to a beacon frame in a network in which the node is located; and sending, to the node, an updated beacon frame that includes information about the working period, so that the node acquires the information about the working period from the updated beacon frame, receives a working beacon frame, establishes a super frame corresponding to the working beacon frame until the working period ends, and then repeats the receiving a working beacon frame and establishing a super frame corresponding to the working beacon frame until the updated beacon frame is received again.
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公开(公告)号：US09654870B2
公开(公告)日：2017-05-16
申请号：US14708991
申请日：2015-05-11
Applicant: Huawei Technologies Co., Ltd. , Tsinghua University
Inventor： Bo Gao , Zhenyu Xiao , Pei Liu
CPC classification number: H04R3/00 , H03M1/00 , H03M1/12 , H04L7/042 , H04L27/2647 , H04W52/0245 , H04W52/028 , H04W52/0283 , H04W52/0287 , Y02D70/00 , Y02D70/142 , Y02D70/144
Abstract: The present invention provides a method, a device and a system for processing data during idle listening. The method includes: sampling, in an idle listening mode, a first analog signal by using an N-bit ADC, and sampling, in a transceiving mode, a second analog signal by using an M-bit ADC, where N and M are both integers, and N is less than M. Embodiments of the present invention can reduce power consumption of an ADC during idle listening.
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