Huawei Technologies Co., Limited

Yifan Wu

Yuefeng Wu

Jian Hu

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.

Packet sending method, apparatus, and device

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.

Packet forwarding method and apparatus

A metering device address management method performed by a collection terminal, includes: sending a first signal to a target metering device to instruct the target metering device to respond to an address protocol packet, and sending a second signal to remaining metering devices that are other than the target metering device and that are connected to the collection terminal to instruct the remaining metering devices not to respond to the address protocol packet; and broadcasting the address protocol packet, where the address protocol packet is used to query or set a physical address of the target metering device. Then the target metering device responds, according to the first signal, to the address protocol packet broadcast. Therefore, the collection terminal can automatically set and query the physical address of the metering device, to resolve a problem of manually configuring the physical address of the metering device.

Growing community of inventors

Nanjing, China

Yifan Wu