公开(公告)号：US11109269B2

公开(公告)日：2021-08-31

申请号：US16426808

申请日：2019-05-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yuefeng Wu ,  Yifan Wu

IPC: H04W28/06 ,  H04W4/80 ,  H04L12/749 ,  H04L12/741 ,  H04L29/12 ,  H04W72/04 ,  H04W80/02 ,  H04L12/721 ,  H04W84/18

Abstract: A network node encapsulates an IPv6 packet into a data frame including a layer-2 forwarding header and a MAC header, where the data frame includes a 6LoWPAN compressed IPv6 packet, and the layer-2 forwarding header and the MAC header are located in an outer layer of the 6LoWPAN compressed IPv6 packet. The network node obtains a MAC address of a next-hop node based on a final MAC address in the layer-2 forwarding header, and sends the data frame to the next-hop node, so that the next-hop node forwards the data frame directly based on the layer-2 forwarding header.

公开(公告)号：US20190281495A1

公开(公告)日：2019-09-12

申请号：US16426808

申请日：2019-05-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yuefeng Wu ,  Yifan Wu

IPC: H04W28/06 ,  H04L12/741 ,  H04L12/749 ,  H04W80/02 ,  H04L29/12 ,  H04W4/80 ,  H04W72/04

Abstract: A network node encapsulates an IPv6 packet into a data frame including a layer-2 forwarding header and a MAC header, where the data frame includes a 6LoWPAN compressed IPv6 packet, and the layer-2 forwarding header and the MAC header are located in an outer layer of the 6LoWPAN compressed IPv6 packet. The network node obtains a MAC address of a next-hop node based on a final MAC address in the layer-2 forwarding header, and sends the data frame to the next-hop node, so that the next-hop node forwards the data frame directly based on the layer-2 forwarding header.

公开(公告)号：US12081285B2

公开(公告)日：2024-09-03

申请号：US17741443

申请日：2022-05-11

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Kuichao Song ,  Yuefeng Wu ,  Chao Ren

IPC: H04B3/54 ,  H04B3/56

CPC classification number: H04B3/542 ,  H04B3/56 ,  H04B2203/5433 ,  H04B2203/5483

Abstract: Embodiments of this application disclose a method, an apparatus, and a system for information transmission in a PLC network. A switch control apparatus in embodiments of this application includes a switch and a coupling circuit. The coupling circuit is connected in parallel to two ends of the switch. When the switch is open, the coupling circuit transmits a first power line communication (PLC) signal to a gateway device. In embodiments of this application, when the switch is open, the PLC signal may be sent to the gateway device and information such as power off and tripping may be reported to the gateway device.

公开(公告)号：US20220224782A1

公开(公告)日：2022-07-14

申请号：US17709194

申请日：2022-03-30

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yuefeng Wu ,  Jiajie Tan ,  Qi Yu

IPC: H04L69/323 ,  H04L101/659 ,  H04L43/10

Abstract: A hybrid network communication method is disclosed. A gateway device receives a first association request of a multimode device through a first physical interface, where the first association request includes a MAC address of a second physical interface of the multimode device. The gateway device receives a second association request of the multimode device through a third physical interface, where the second association request includes a MAC address of a fourth physical interface of the multimode device. The gateway device obtains an IPv6 address of the multimode device, and records a first correspondence and a second correspondence. The first correspondence includes the IPv6 address of the multimode device, the MAC address of the second physical interface, and the first physical interface. The second correspondence includes the IPv6 address of the multimode device, the MAC address of the fourth physical interface, and the third physical interface.

公开(公告)号：US11246056B2

公开(公告)日：2022-02-08

申请号：US16695473

申请日：2019-11-26

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yuefeng Wu ,  Yifan Wu ,  Jian Hu

IPC: H04W28/02 ,  H04L1/18 ,  H04L12/801 ,  H04L1/16 ,  H04W84/18

Abstract: A packet sending method includes: receiving, by a first node, a first broadcast data packet sent by a second node; and if a sequence number of the first broadcast data packet equals 1 plus a sequence number of a latest data packet saved by the first node, and the first node does not receive, within a first preset time period, a first acknowledgement indication for the first broadcast data packet of the second node, sending, by the first node, a first broadcast acknowledgement packet when the first preset time period elapses, where the first broadcast acknowledgement packet includes the first acknowledgement indication, and the first acknowledgement indication includes the sequence number of the first broadcast data packet and an address of the second node. This method could resolve acknowledgement packet implosion while ensuring broadcast packet reliability of a wireless mesh network.

公开(公告)号：US11140245B2

公开(公告)日：2021-10-05

申请号：US16828228

申请日：2020-03-24

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yuefeng Wu ,  Jianjun Jiang

IPC: H04L29/06 ,  H04L12/44 ,  H04L12/747 ,  H04L12/851

Abstract: A packet processing method and apparatus are presented. The method includes: generating, by a first node, a first packet based on first data of the first node, where the packet header of the first packet includes a service type, a final destination address, and residual times to aggregation (RTA); when the RTA of the first packet is not 0, determining, by the first node, a remaining capacity in a first cache corresponding to the service type and the final destination address; and when a data length of the first packet is not greater than the remaining capacity, aggregating, by the first node, the first packet and the second packet into a third packet, where the RTA of the third packet is a minimum value in the RTA of the second packet and a value obtained after 1 is subtracted from the RTA of the first packet.