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    • 4. 发明公开
    • METHOD FOR MEASURING AVAILABLE BANDWIDTH AND COMMUNICATION DEVICE
    • EP3896913A1
    • 2021-10-20
    • EP20781778.4
    • 2020-03-26
    • Huawei Technologies Co., Ltd.
    • YU, BoyuanCHENG, JieCAO, QianXIA, Nu
    • H04L12/26
    • Embodiments of this application disclose a method for measuring available bandwidth, to improve measurement accuracy. The method in the embodiments of this application includes: A transmit end sends a first probe sequence to a receive end, and receives a first available bandwidth measurement result returned by the receive end, where the first probe sequence includes a group of probe packets with increasing sending rates, and the first probe sequence is used for determining the first available bandwidth measurement result; the transmit end determines a second probe sequence based on the first available bandwidth measurement result, where the second probe sequence includes a group of probe packets with increasing sending rates, a range of the sending rates of the second probe sequence is the same as a range of the sending rates of the first probe sequence, and the second probe sequence is used for determining a second available bandwidth measurement result; the transmit end sends the second probe sequence to the receive end, and receives the second available bandwidth measurement result returned by the receive end; and the transmit end obtains the available bandwidth, where the available bandwidth is determined based on the second available bandwidth measurement result.
    • 5. 发明公开
    • METHOD FOR IMPLEMENTING DATA MULTICAST, APPARATUS, AND SYSTEM
    • EP3806387A1
    • 2021-04-14
    • EP19825646.3
    • 2019-06-28
    • HUAWEI TECHNOLOGIES CO., LTD.
    • XIA, NuCHEN, GangZHAO, HongboYU, BoyuanZHANG, Mingli
    • H04L12/18
    • The present invention discloses a data multicast implementation method, apparatus, and system. The method includes: A transmission device receives a standby forwarding path establishment request, where the standby forwarding path establishment request includes a device identifier, has a destination address being an address of a multicast source device, and is used to request to establish a standby forwarding path between a multicast destination device identified by the device identifier and the multicast source device. When determining, based on the device identifier in the standby forwarding path establishment request, that the transmission device is located on an active forwarding path between the multicast destination device and the multicast source device, the transmission device skips using the transmission device as a device on the standby forwarding path between the multicast destination device and the multicast source device, and skips forwarding the standby forwarding path establishment request. Therefore, when a fault occurs on the transmission device, the transmission device affects only the active forwarding path of the multicast destination device, but does not affect the standby forwarding path of the multicast destination device. This improves reliability of multicast data transmission.