公开(公告)号：US20170346716A1

公开(公告)日：2017-11-30

申请号：US15681659

申请日：2017-08-21

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiuli ZHENG ,  Bailin WEN ,  Rong WANG

IPC: H04L12/751 ,  H04L12/741 ,  H04L12/721 ,  H04L12/717 ,  H04L29/06 ,  H04L12/715

CPC classification number: H04L45/02 ,  H04L45/26 ,  H04L45/38 ,  H04L45/42 ,  H04L45/54 ,  H04L45/64 ,  H04L69/16

Abstract: Embodiments disclose a method for acquiring, by a switch deployed in a software defined network (SDN), an exact flow entry, where the SDN network includes an SDN controller and multiple SDN switches, the SDN controller being configured to communicate with each SDN switch in an inband communication manner. The method includes establishing, by a first SDN switch, a reliable connection to the SDN controller, and sending a first control message based on a packet corresponding to a protocol for the reliable connection. Path information of the first SDN switch is added to the control message. Each SDN switch that receives the first control message adds path information of each SDN switch to the first control message, so that the SDN controller is provided with an entire path, so as to deliver a flow table to the first SDN switch.

公开(公告)号：US20190124498A1

公开(公告)日：2019-04-25

申请号：US16221377

申请日：2018-12-14

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiuli ZHENG ,  Xiaohu XU ,  Jiao WANG

IPC: H04W8/26 ,  H04L29/12 ,  H04L29/06

Abstract: The present application discloses a service data packet encapsulation method and apparatus. The method includes at least: obtaining, by a source communications device, a mobility support parameter of a current service, where the mobility support parameter is used to indicate whether a corresponding service requires mobility support, and the source communications device includes at least an ID identifier layer and a locator layer; determining, by the source communications device based on the mobility support parameter of the current service, whether the current service requires mobility support; and obtaining, by the source communications device, a source locator of the source communications device and a destination locator of a destination communications device when determining that the current service does not require mobility support, and performing, by using the source locator and the destination locator, locator layer encapsulation on a data packet that needs to be sent by the current service.

公开(公告)号：US20190132210A1

公开(公告)日：2019-05-02

申请号：US16234009

申请日：2018-12-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiuli ZHENG ,  Jiao WANG

IPC: H04L12/24

Abstract: Embodiments of this application disclose a topology determining method used by an OFC to determine a complete topology structure of a hybrid SDN-IP network. The method includes: receiving, by an OFC, a first message forwarded by a first OFS; determining information about a link from the first TS to the first OFS based on the first message; sending a second message to the first OFS, and instructing the first OFS to forward the second message on the first port; sending a third message to the first OFS; receiving a first response message, where the first response message carries the MIB information of the first TS; and obtaining the information about the link from the first OFS to the first TS and information about a link from a second TS to the first TS based on the MIB information of the first TS.

公开(公告)号：US20190306771A1

公开(公告)日：2019-10-03

申请号：US16442968

申请日：2019-06-17

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiuli ZHENG ,  Xiaohu XU

IPC: H04W36/14 ,  H04W8/14 ,  H04W12/04

Abstract: Embodiments of the present disclosure disclose a handover method and an apparatus, so as to reduce a handover delay in a process of handing over an MN from a previous access network to a new access network. The method includes: sending, by the MN, first instruction information to a NAR by using a PAR, where the first instruction information is used to instruct the NAR to construct a care-of test initialization message and send the care-of test initialization message to a CN, and the care-of test initialization message includes an NCoA of the MN and is used to request a care-of keygen token from the CN based on the NCoA; handing over the MN from the PAR to the NAR; receiving, by the MN, the care-of keygen token sent by the NAR from the CN; and binding the MN with the CN based on the care-of keygen token.