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公开(公告)号：US10177683B2
公开(公告)日：2019-01-08
申请号：US15938193
申请日：2018-03-28
Applicant: Huawei Technologies Co., Ltd.
Abstract: A multi-level inverter includes a direct current input, a first bidirectional switch, a second bidirectional switch, a third capacitor, and an inverter. The direct current input includes a first capacitor and a second capacitor connected in series between positive and negative terminals of the direct current input power supply. The inverter includes a first switching tube, a second switching tube, a third switching tube, and a fourth switching tube that are connected in series co-directionally between the positive and negative terminals of the direct current input power supply. One terminal of the first bidirectional switch is connected to a connection point between the third switching tube and the fourth switching tube.
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公开(公告)号：US11425785B2
公开(公告)日：2022-08-23
申请号：US16847175
申请日：2020-04-13
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jianjian Zhu , Rahul Arvind Jadhav , Neng Yang , Zhen Cao , Fanzhao Wang
Abstract: A network switching method includes transmitting, by an electronic device, data using a wireless local area network, when a data transmission delay of the wireless local area network is greater than a first threshold, switching, by the electronic device, to transmitting data using both the wireless local area network and a mobile network, and when the electronic device transmits data using both the wireless local area network and the mobile network, if the data transmission delay of the wireless local area network is greater than a second threshold, switching, by the electronic device, to transmitting data using the mobile network, where the first threshold is less than the second threshold.
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公开(公告)号：US11277313B2
公开(公告)日：2022-03-15
申请号：US17145932
申请日：2021-01-11
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Nagesh S , Zhen Cao , Jianjian Zhu
IPC: H04L12/24 , H04L12/707 , H04L41/0893 , H04L45/24 , H04L69/16 , H04L69/22
Abstract: This application provides example data transmission methods and corresponding example devices. One example method includes sending, by a first device, a first packet to a second device, where the first packet includes transmission policy negotiation information, and where the transmission policy negotiation information is used to negotiate a transmission policy used when the second device uses a multipath connection. The first device can then receive a second packet from the second device, where the second packet includes first policy information, and where the first policy information indicates a transmission policy used when the second device uses the multipath connection. The first device can then transmit data with the second device based on the first policy information by using a transmission policy corresponding to the first policy information.
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公开(公告)号：US20200245406A1
公开(公告)日：2020-07-30
申请号：US16847175
申请日：2020-04-13
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jianjian Zhu , Rahul Arvind Jadhav , Neng Yang , Zhen Cao , Fanzhao Wang
Abstract: A network switching method includes transmitting, by an electronic device, data using a wireless local area network, when a data transmission delay of the wireless local area network is greater than a first threshold, switching, by the electronic device, to transmitting data using both the wireless local area network and a mobile network, and when the electronic device transmits data using both the wireless local area network and the mobile network, if the data transmission delay of the wireless local area network is greater than a second threshold, switching, by the electronic device, to transmitting data using the mobile network, where the first threshold is less than the second threshold.
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公开(公告)号：US20180219492A1
公开(公告)日：2018-08-02
申请号：US15938193
申请日：2018-03-28
Applicant: Huawei Technologies Co., Ltd.
IPC: H02M7/5387
CPC classification number: H02M7/5387 , H02M1/32 , H02M1/36 , H02M5/45 , H02M7/483 , H02M7/487 , H02M7/537 , Y02E10/56
Abstract: A multi-level inverter includes a direct current input, a first bidirectional switch, a second bidirectional switch, a third capacitor, and an inverter. The direct current input includes a first capacitor and a second capacitor connected in series between positive and negative terminals of the direct current input power supply. The inverter includes a first switching tube, a second switching tube, a third switching tube, and a fourth switching tube that are connected in series co-directionally between the positive and negative terminals of the direct current input power supply. One terminal of the first bidirectional switch is connected to a connection point between the third switching tube and the fourth switching tube.
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Patent Agency Ranking
公开(公告)号：US09166872B2
公开(公告)日：2015-10-20
申请号：US13927891
申请日：2013-06-26
Applicant: Huawei Technologies Co., Ltd.
Inventor： Zhen Cao , Shi Tang , Jun Pan , Zhijian Sun , Hua Shen
CPC classification number: H04L41/0645 , H04L61/103 , H04L61/2046 , H04L61/2069
Abstract: The present invention discloses a method and network device for detecting IP address conflict. The method for detecting IP address conflict comprises: collecting all the ARP entries from a broadcasting network segment; and carrying out a data check on the ARP entries collected, and determining that there is an IP address conflicted when it is detected that there are ARP entries with the same IP address but different media access control (MAC) addresses. The network device includes a collecting module and a detecting module. The present invention may achieve the function of IP address conflict detection in a broadcasting network segment by employing one or several network devices and uses the ARP flexibly. The outer appearance of the ARP protocol is not changed, and the other devices in the broadcast network segment do not need to modify the protocol or provide special function support.
Abstract translation: 本发明公开了一种用于检测IP地址冲突的方法和网络设备。 IP地址冲突检测方法包括：从广播网段收集所有ARP表项; 并对收集到的ARP表项进行数据检查，并且当检测到存在具有相同IP地址但不同的媒体访问控制（MAC）地址的ARP条目时，确定存在IP地址冲突。 网络设备包括收集模块和检测模块。 本发明可以通过采用一个或多个网络设备实现广播网段中IP地址冲突检测的功能，并灵活使用ARP。 ARP协议的外观不改变，广播网段中的其他设备不需要修改协议或提供特殊功能支持。
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公开(公告)号：US20130100824A1
公开(公告)日：2013-04-25
申请号：US13718921
申请日：2012-12-18
Applicant: Huawei Technologies Co., Ltd.
Inventor： Zhen Cao , Xiangdong Yin , Wenneng Huang
IPC: H04L12/24
CPC classification number: H04L41/0677 , H04L43/10 , H04L43/12
Abstract: A method for an intermediate node to locate a fault independently, where the intermediate node serves to forward a packet between a first end node and a second end node, the method includes: creating a test packet and sending the test packet to the first end node, where the test packet includes address information of the second end node, and the test packet is used to trigger the first end node to send a response packet to the second end node; forwarding the response packet from the first end node to the second end node; capturing the response packet ; and analyzing, according to a result of the packet capturing, whether a packet from the first end node to the second end node can be forwarded normally.
Abstract translation: 一种用于中间节点独立定位故障的方法，其中所述中间节点用于在第一端节点和第二端节点之间转发分组，所述方法包括：创建测试分组并将所述测试分组发送到所述第一终端节点 其中所述测试分组包括所述第二端节点的地址信息，并且所述测试分组用于触发所述第一端节点向所述第二端节点发送响应分组; 将响应分组从第一端节点转发到第二端节点; 捕获响应数据包; 以及根据所述分组捕获的结果，分析从所述第一端节点到所述第二端节点的分组是否可以正常转发。
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公开(公告)号：US11671210B2
公开(公告)日：2023-06-06
申请号：US17138321
申请日：2020-12-30
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Zhen Cao , Kai Zheng , Ilpo Jarvinen , Markku Kojo
IPC: H04L1/18 , H04L5/00 , H04L1/1867 , H04L49/552
CPC classification number: H04L1/188 , H04L5/0055 , H04L49/552
Abstract: This application provide a retransmission control method, a communications interface, and an electronic device. When a transmit end transmits a first data packet to a receive end and does not receive an acknowledgement corresponding to the first data packet within a first RTO, the transmit end retransmits a second data packet based on a second RTO. The second data packet is a data packet transmitted by the transmit end after the transmit end transmits the first data packet. The second RTO is related to a receive timestamp of the acknowledgement corresponding to the first data packet and a transmit timestamp of the first data packet.
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公开(公告)号：US20220353952A1
公开(公告)日：2022-11-03
申请号：US17866084
申请日：2022-07-15
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jianjian Zhu , Rahul Arvind Jadhav , Neng Yang , Zhen Cao , Fanzhao Wang
Abstract: A network switching method includes transmitting, by an electronic device, data using a wireless local area network, when a data transmission delay of the wireless local area network is greater than a first threshold, switching, by the electronic device, to transmitting data using both the wireless local area network and a mobile network, and when the electronic device transmits data using both the wireless local area network and the mobile network, if the data transmission delay of the wireless local area network is greater than a second threshold, switching, by the electronic device, to transmitting data using the mobile network, where the first threshold is less than the second threshold.
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公开(公告)号：US20220327011A1
公开(公告)日：2022-10-13
申请号：US17847525
申请日：2022-06-23
Applicant: Huawei Technologies Co., Ltd.
Inventor： Rahul Arvind Jadhav , K Anmol Mani Tejeswar Sarma , Zhen Cao
IPC: G06F9/54 , H04L67/10 , H04L67/133
Abstract: A data processing method and apparatus, where one or more applications run in an operating system of a first device, there is a plurality of paths between the first device and a second device, and the paths correspond to the one or more applications. In a data receiving process, the one or more applications obtain data on the paths through a system call, and further obtain data in a plurality of packets from at least one path. In a data sending process, the one or more applications distribute data to corresponding paths through a system call.
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