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1. 发明公开

EP3896913A1 METHOD FOR MEASURING AVAILABLE BANDWIDTH AND COMMUNICATION DEVICE 审中-公开
公开(公告)号：EP3896913A1
公开(公告)日：2021-10-20
申请号：EP20781778.4
申请日：2020-03-26
申请人： Huawei Technologies Co., Ltd.
发明人： YU, Boyuan , CHENG, Jie , CAO, Qian , XIA, Nu
IPC分类号： H04L12/26
摘要： 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.

2. 发明公开

EP3806387A1 METHOD FOR IMPLEMENTING DATA MULTICAST, APPARATUS, AND SYSTEM 审中-实审
公开(公告)号：EP3806387A1
公开(公告)日：2021-04-14
申请号：EP19825646.3
申请日：2019-06-28
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： XIA, Nu , CHEN, Gang , ZHAO, Hongbo , YU, Boyuan , ZHANG, Mingli
IPC分类号： H04L12/18
摘要： 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.

3. 发明公开

EP4333397A1 PACKET PROCESSING METHOD AND SYSTEM, AND NETWORK DEVICE 审中-实审
公开(公告)号：EP4333397A1
公开(公告)日：2024-03-06
申请号：EP22804094.5
申请日：2022-05-23
申请人： Huawei Technologies Co., Ltd.
发明人： YU, Boyuan , YU, Qi , TANG, Penghe , KAI, Yi , ZHANG, Huanhuan , XIA, Nu
IPC分类号： H04L47/00
摘要： A packet processing method and system, and a network device are disclosed, and belong to the field of network technologies. A first network device sends a first packet to a second network device through a first tunnel, and sends a second packet to a third network device through a second tunnel. The second network device forwards the first packet to the third network device through a third tunnel. The third network device processes the first packet and the second packet. The first network device is located at a first site. The second network device and the third network device are located at a second site. The first site and the second site are connected through a wide area network. Wide area network multipath transmission may be implemented in a multi-gateway scenario.

4. 发明公开

EP4145780A1 METHOD FOR CONTROLLING NETWORK CONGESTION AND NETWORK DEVICE 审中-实审
公开(公告)号：EP4145780A1
公开(公告)日：2023-03-08
申请号：EP21811873.5
申请日：2021-05-21
申请人： Huawei Technologies Co., Ltd.
发明人： ZHOU, Jun , XIA, Nu , QU, Xiaoyang , HE, Luyou , ZHU, Xia
IPC分类号： H04L12/801 , H04L12/807 , H04L12/815
摘要： This application discloses a network congestion control method and a network device, and relates to the field of communication technologies, to improve continuity and completion of a packet in a transmission process of a Transmission Control Protocol (TCP) flow. In this application, when pre-congestion (that is, congestion may occur) occurs in a forwarding direction of the TCP flow, a forwarding device reduces a value of a receive window (RWND) field in an acknowledge (ACK) packet, to reduce a sending rate of a transmit end for a packet in the TCP flow or delay sending of a packet by a transmit end. This relieves buffer pressure of the forwarding device, reduces a packet loss, and improves the continuity and the completion of the packet in the transmission process of the TCP flow.

5. 发明公开

EP3783849A1 MULTICAST DATA TRANSMISSION METHOD, RELATED APPARATUS AND SYSTEM 有权
公开(公告)号：EP3783849A1
公开(公告)日：2021-02-24
申请号：EP19800073.9
申请日：2019-05-07
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： XIA, Nu , CHEN, Jian , ZHU, Xia , WEI, Naiwen
IPC分类号： H04L12/715
摘要： This application discloses a multicast data transmission method. The method may include: determining, by a first BFIR in a first BIER domain, a BIFT-id and a bitstring that correspond to multicast data in a second BIER domain, where the BIFT-id is determined based on at least an SI to which a BFR-id of a first BFER belongs and a BSL supported by the first BFER, and the first BFER is a BFER in the second BFER domain that is used to receive the multicast data; encapsulating, by the first BFIR, the multicast data into a BIER data packet, where a BIER header of the BIER data packet includes the BIFT-id and the bitstring that correspond to the multicast data in the second BIER domain; and finally sending, by the first BFIR, the labeled BIER data packet to a second BFIR, where the label is a label corresponding to a prefix of the second BFIR. The foregoing solution can significantly improve timeliness of multicast transmission.

6. 发明公开

EP3621253A1 TRAFFIC CONTROL METHOD, DEVICE AND SYSTEM 审中-公开
公开(公告)号：EP3621253A1
公开(公告)日：2020-03-11
申请号：EP17911912.8
申请日：2017-12-31
申请人： Huawei Technologies Co., Ltd.
发明人： XIA, Nu , ZHANG, Jinhui , WEI, Qikun
IPC分类号： H04L12/803
摘要： A flow control method and system, and an apparatus are provided to implement flow control in a process of transmitting a media stream between devices. The method includes: receiving, by a first device, a media stream that is sent by a second device at a first rate; when determining that a buffer usage rises from a first threshold to a second threshold, instructing, by the first device based on a rate that is of a media stream and that is detected in a first time period in which the buffer usage rises from the first threshold to the second threshold, the second device to send a media stream to the first device at a second rate, where the second rate is less than the first rate; sending, by the second device, the media stream to the first device at the second rate; when determining that the buffer usage rises from the second threshold to a third threshold, instructing, by the first device based on a rate that is of a media stream and that is detected in a second time period in which the buffer usage rises from the second threshold to the third threshold, the second device to send a media stream to the first device at a third rate, where the third rate is not greater than the second rate; and sending, by the second device, the media stream to the first device at the third rate.

7. 发明公开

EP3767901A1 METHOD FOR TRANSMITTING MULTICAST MESSAGE, DEVICE, AND SYSTEM 审中-公开
公开(公告)号：EP3767901A1
公开(公告)日：2021-01-20
申请号：EP18912178.3
申请日：2018-12-27
申请人： Huawei Technologies Co., Ltd.
发明人： XIA, Nu , CHEN, Jian , ZHU, Xia , ZHOU, Jun , HUANG, Yihong , LI, Ji , WEI, Naiwen
IPC分类号： H04L12/761 , H04L12/947
摘要： This disclosure relates to a method, a device, and a system for transmitting a multicast packet, and pertains to the field of electronic technologies. The method includes: when a device that is in a source subnet and that is connected to a core network receives a multicast packet of a target multicast group, determining addresses of devices that are in a plurality of destination subnets corresponding to the target multicast group and that are connected to the core network, replicating the multicast packet, to obtain a plurality of multicast packets whose quantity is equal to a quantity of the plurality of destination subnets, separately adding outer encapsulation to each multicast packet, and forwarding the multicast packet to which the outer encapsulation is added, where a destination address in the outer encapsulation is an address of a device that is in each destination subnet and that is connected to the core network. According to this disclosure, a quantity of multicast packets in a data transmission network can be greatly reduced, and occupation of network resources can be reduced.

8. 发明公开

EP3742746A1 METHOD AND DEVICE FOR REALIZING VIDEO SERVICE, AND COMMUNICATION SYSTEM AND COMPUTER-READABLE STORAGE MEDIUM 无效
公开(公告)号：EP3742746A1
公开(公告)日：2020-11-25
申请号：EP18905871.2
申请日：2018-12-27
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： CHEN, Jian , ZHANG, Jinhui , ZHU, Xia , XIONG, Jie , YANG, Rong , CHEN, Gang , LIN, Tao , XIA, Nu
IPC分类号： H04N21/647 , H04N21/24 , H04N21/238 , H04N21/234 , H04N21/231
摘要： This application discloses a method and device for implementing a video service, a communications system, and a computer-readable storage medium. The method includes: obtaining feature information of a video stream, where the feature information of the video stream includes information used to indicate a highest bit rate of the video stream; and determining a smooth rate based on the feature information of the video stream, where the smooth rate is not less than the highest bit rate of the video stream, and the smooth bit rate is used to determine a time interval at which a target device sends a data packet of the video stream to a video terminal. According to technical solutions of this application, a probability that a downstream device of the target device receives burst traffic may be effectively reduced, thereby reducing a packet loss on a caused by video traffic burst.

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