公开(公告)号：US20190215060A1

公开(公告)日：2019-07-11

申请号：US16360379

申请日：2019-03-21

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Haomian ZHENG ,  Yu ZHENG ,  Italo BUSI ,  Qinfen TAN ,  Qingcong LU

IPC: H04B10/038 ,  H04B10/077

CPC classification number: H04B10/038 ,  H04B10/0771 ,  H04J3/14 ,  H04J2203/006 ,  H04L12/10 ,  Y02D50/30

Abstract: The present disclosure discloses a protection switching method and a node. The method includes: receiving, by an intermediate node, a first protection switching request message sent by an upstream neighboring node, where the first protection switching request message is used to request to activate a first protection path, and the intermediate node is a node on the first protection path; determining, by the intermediate node, that the first protection path needs to occupy N1 timeslots, and selecting N1 timeslots for the first protection path from N2 available timeslots in a preset order; and sending, by the intermediate node, a second protection switching request message to the downstream neighboring node, where the second protection switching request message is used to request the downstream neighboring node to complete a cross-connection, on the first protection path, between the downstream neighboring node and the intermediate node based on the first group of timeslots.

公开(公告)号：US20200343971A1

公开(公告)日：2020-10-29

申请号：US16925687

申请日：2020-07-10

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Haomian ZHENG ,  Yu ZHENG ,  Italo BUSI ,  Qinfen TAN ,  Qingcong LU

IPC: H04B10/038 ,  H04L12/10 ,  H04J3/14 ,  H04B10/077

Abstract: The present disclosure discloses a protection switching method and a node. The method can include: receiving, by an intermediate node, a first protection switching request message sent by an upstream neighboring node, where the first protection switching request message is used to request to activate a first protection path, and the intermediate node is a node on the first protection path; determining, by the intermediate node, that the first protection path needs to occupy N1 timeslots, and selecting N1 timeslots for the first protection path from N2 available timeslots in a preset order; and sending, by the intermediate node, a second protection switching request message to the downstream neighboring node, where the second protection switching request message is used to request the downstream neighboring node to complete a cross-connection, on the first protection path, between the downstream neighboring node and the intermediate node based on the first group of timeslots.