公开(公告)号：US20220109624A1

公开(公告)日：2022-04-07

申请号：US17552210

申请日：2021-12-15

Applicant: Huawei Technologies Co., Ltd.

Inventor： Cheng Li ,  Zhenbin Li

IPC: H04L45/00 ,  H04L45/74 ,  H04L45/021

Abstract: This application discloses a packet processing method and apparatus, and a computer storage medium, and belongs to the field of segment routing technologies. In the method, the network node receives a packet carrying an SRH, where the SRH includes one or more TLV fields and a TLV processing attribute, the TLV processing attribute indicates whether the network node needs to process the TLV fields included in the SRH, and the network node determines, based on the TLV processing attribute, processing of the TLV fields included in the SRH. In this way, any segment endpoint node on a segment routing network may determine the TLV processing attribute by using the SRH, so as to determine whether the TLV fields included in the SRH need to be processed.

公开(公告)号：US20210409321A1

公开(公告)日：2021-12-30

申请号：US17469201

申请日：2021-09-08

Applicant: Huawei Technologies Co., Ltd.

Inventor： Cheng Li ,  Zhibo Hu

IPC: H04L12/721 ,  H04L12/707

Abstract: A method includes obtaining, by a first network node, a first segment identifier advertisement message, where the first segment identifier advertisement message includes a first segment identifier and a first flag bit, and the first segment identifier is corresponding to a second network node; determining, by the first network node, that the first flag bit indicates that a packet needs to be forwarded through the second network node; and generating, by the first network node, a first packet forwarding path, where the first packet forwarding path includes the second network node.

公开(公告)号：US20200329129A1

公开(公告)日：2020-10-15

申请号：US16911715

申请日：2020-06-25

Applicant: Huawei Technologies Co., Ltd.

Inventor： Cheng Li ,  Guoyi Chen

IPC: H04L29/08 ,  H04L12/26 ,  H04L12/741

Abstract: A packet processing method, a network node, and a system includes obtaining, by a first network node, a first packet that includes a segment list, where the segment list includes a segment identifier of a network node on a path used to forward the first packet, obtaining, by the first network node, a segment identifier of a second network node from the segment list, where the second network node is a next-hop segment node of the first network node on the path, replacing, by the first network node, a destination address of the first packet with the segment identifier of the second network node, and adding a network performance parameter of the first network node to the segment list to generate a second packet, and sending, by the first network node, the second packet to the second network node.

公开(公告)号：US11924099B2

公开(公告)日：2024-03-05

申请号：US17171429

申请日：2021-02-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Cheng Li ,  Zhenbin Li ,  Yang Xia ,  Taixu Tian

IPC: H04L45/74 ,  H04L45/00 ,  H04L45/50

CPC classification number: H04L45/74 ,  H04L45/34 ,  H04L45/50 ,  H04L2212/00

Abstract: A segment routing device receives a first packet from a first network. A first packet header of the first packet includes a segment list. The segment list includes a plurality of sequentially arranged identifiers. The identifiers include a first-type identifier and a plurality of second-type identifiers. Network devices or links identified by the first-type identifier and the second-type identifier are respectively on the first network and a second network. A type of the first network is different from a type of the second network. The segment routing device encapsulates a second packet header for the first packet to form a second packet. The second packet header includes the plurality of second-type identifiers. The segment routing device sends the second packet to the second network.

公开(公告)号：US11902156B2

公开(公告)日：2024-02-13

申请号：US17520737

申请日：2021-11-08

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Cheng Li ,  Zhenbin Li ,  Jun Gong ,  Guoyi Chen ,  Jie Dong

IPC: H04L45/00 ,  H04L45/12 ,  H04L45/42

CPC classification number: H04L45/566 ,  H04L45/123 ,  H04L45/42

Abstract: This application discloses a method that includes obtaining by a network device an original segment list corresponding to a packet forwarding path, where the original segment list includes original segment identifiers that are sequentially arranged, and each of the original segment identifiers that are sequentially arranged corresponds to one node or link on the packet forwarding path. The method further includes comparing by the network device a plurality of successively adjacent original segment identifiers in the original segment list, to generate a plurality of successively adjacent compressed segment identifiers, where a length of each compressed segment identifier is less than a length of a corresponding original segment identifier, and generating by the network device a compressed segment list, where the compressed segment list includes a plurality of compressed segment identifiers, and the compressed segment list is used to forward a packet along the packet forwarding path.

公开(公告)号：US20240031989A1

公开(公告)日：2024-01-25

申请号：US18479772

申请日：2023-10-02

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Cheng Li ,  Xin Gao ,  Yi Wang

IPC: H04W68/02 ,  H04W64/00 ,  H04L5/00

CPC classification number: H04W68/02 ,  H04W64/003 ,  H04L5/0048

Abstract: Embodiments of this application provide a paging method and an apparatus, to reduce paging overheads, and relate to the field of wireless communication technologies. In the method, a serving network device may receive positioning area information. A positioning area represented by the positioning area information herein is used by a terminal device to send an SRS in an inactive mode or an idle mode. The serving network device may send a paging message to one or more neighboring network devices in a paging area. The paging area may be determined based on the positioning area.

公开(公告)号：US11792100B2

公开(公告)日：2023-10-17

申请号：US17135317

申请日：2020-12-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Cheng Li ,  Guoyi Chen

IPC: H04L43/0852 ,  H04L43/18 ,  H04L45/741 ,  H04L45/745

CPC classification number: H04L43/0858 ,  H04L43/18 ,  H04L45/741 ,  H04L45/745

Abstract: A network performance parameter sending method includes: obtaining, by a first network node, a segment identifier of a second network node in a segment list of a packet, where the second network node is a next-hop segment node of the first network node on a forwarding path of the packet; and adding, by the first network node, a network performance parameter of the first network node to the segment list, and then sending the packet to the second network node. In a process of forwarding the packet by using the segment list in the packet, the first network node uses the segment list to carry the network performance parameter of the network node.

公开(公告)号：US11677657B2

公开(公告)日：2023-06-13

申请号：US17145564

申请日：2021-01-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Cheng Li ,  Stefano Previdi ,  Guoyi Chen

IPC: H04L45/128 ,  H04L45/24 ,  H04L45/00 ,  H04L45/50 ,  H04L45/02 ,  H04L69/04 ,  H04L45/12

CPC classification number: H04L45/1287 ,  H04L45/02 ,  H04L45/04 ,  H04L45/12 ,  H04L45/24 ,  H04L45/34 ,  H04L45/50 ,  H04L69/04

Abstract: A method and an apparatus for obtaining information about a forwarding path of a data packet in segment routing (SR) include, when a first path indicated by a plurality of path identifiers in initial information is a unique shortest path from a start node on the first path to an end node on the first path, the first path is indicated using a node-segment identifier (SID) of the end node on the first path instead of the path identifiers.

公开(公告)号：US20220109627A1

公开(公告)日：2022-04-07

申请号：US17547740

申请日：2021-12-10

Applicant: Huawei Technologies Co., Ltd.

Inventor： Cheng Li

IPC: H04L45/741 ,  H04L69/22

Abstract: The present disclosure includes a method performed by a network device for implementing service function processing. The network device receives a first SRv6 packet, where the first SRv6 packet includes a first IPv6 header and a first NSH. The network device converts the first SRv6 packet to a first NSH packet, where the first NSH packet includes a part obtained by removing the first IPv6 header from the first SRv6 packet. The network device sends the first NSH packet to a service function SF entity. In addition, the present disclosure further includes an apparatus for implementing service function processing.

公开(公告)号：US20220060414A1

公开(公告)日：2022-02-24

申请号：US17520737

申请日：2021-11-08

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Cheng Li ,  Zhenbin Li ,  Jun Gong ,  Guoyi Chen ,  Jie Dong

IPC: H04L12/721 ,  H04L12/717

Abstract: This application discloses a method that includes obtaining by a network device an original segment list corresponding to a packet forwarding path, where the original segment list includes original segment identifiers that are sequentially arranged, and each of the original segment identifiers that are sequentially arranged corresponds to one node or link on the packet forwarding path. The method further includes comparing by the network device a plurality of successively adjacent original segment identifiers in the original segment list, to generate a plurality of successively adjacent compressed segment identifiers, where a length of each compressed segment identifier is less than a length of a corresponding original segment identifier, and generating by the network device a compressed segment list, where the compressed segment list includes a plurality of compressed segment identifiers, and the compressed segment list is used to forward a packet along the packet forwarding path.