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    • 10. 发明公开
    • MESSAGE TRANSMISSION METHOD AND APPARATUS
    • EP3496431A1
    • 2019-06-12
    • EP17876833.9
    • 2017-11-20
    • Huawei Technologies Co., Ltd.
    • ZHUANG, ZheWEI, HanyuWANG, Hao
    • H04W4/06H04W40/04H04W40/22H04W40/24H04W84/18
    • This application discloses a packet transmission method and apparatus, and belongs to the field of communications technologies. The method includes: broadcasting a first ID sending request in a first broadcast domain, where the first ID sending request includes a first ID number, and the first ID number is a packet ID number used by each network node in the first broadcast domain at a current moment to identify a packet; when receiving, within a preset time period, no ID sending request sent by another network node, sending a first packet to a second network node, where the first packet includes the first ID number, and the another network node is a node in the first broadcast domain other than the first network node; and after sending the first packet to the second network node, updating the ID number in synchronization with the another network node in the first broadcast domain, to obtain a second ID number, where the second ID number and the first ID number meet a preset change rule, and the change rule is a monotonically increasing rule or a monotonically decreasing rule. In this application, a problem of relatively low reliability in determining a repeated packet in large-scale networking is resolved. This application is used for packet transmission.