公开(公告)号：US20210211390A1

公开(公告)日：2021-07-08

申请号：US17211466

申请日：2021-03-24

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhigang HUANG ,  Xijin TAN ,  Xiaoyang QU ,  Jian CHEN

IPC: H04L12/863 ,  H04L12/875 ,  H04W28/02 ,  H04W28/14

Abstract: Embodiments of the application provide a data transmission method and a device. A sending device periodically obtains a first packet sequence number and a second packet sequence number. The first packet sequence number is a maximum value in packet sequence numbers respectively corresponding to packets that belong to a first data flow and that are received by a receiving device through a first data channel in a statistics period. The second packet sequence number is a maximum value in packet sequence numbers respectively corresponding to packets that belong to the first data flow and that are received by the receiving device through a second data channel in the statistics period. The sending device updates a packet cache queue of: the first data channel, the second data channel, or both the first and the second data channels, based on the first packet sequence number and the second packet sequence number.

公开(公告)号：US20210211386A1

公开(公告)日：2021-07-08

申请号：US17211077

申请日：2021-03-24

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiaoyang QU ,  Zhigang HUANG ,  Guang CHEN ,  Jian CHEN

IPC: H04L12/841 ,  H04W28/02 ,  H04W76/15 ,  H04L12/707 ,  H04L12/823 ,  H04L29/12

Abstract: Embodiments of this application disclose a method, an apparatus, and a system for implementing data transmission. The method includes: obtaining, by a sending device, a data packet in a target data flow; and sending the data packet through each of at least two physical links between the sending device and a receiving device, where the data packet sent through each of the at least two physical links includes a same sequence number. Because the data packet in the target data flow is sent through different physical links, not through only one physical link, when a transmission latency of the data packet is increased due to a bandwidth instability factor such as burst traffic or electromagnetic wave interference on any physical link, the receiving device can combine, into a target video flow, data packets that are sent through other physical links and that have a lower latency.