公开(公告)号：US20230038425A1

公开(公告)日：2023-02-09

申请号：US17966759

申请日：2022-10-14

Applicant: Beijing University of Posts and Telecommunications

Inventor： Bo CHENG ,  Yang ZHANG ,  Shuai ZHAO ,  Yingying ZHANG ,  Junliang CHEN

IPC: H04L51/58 ,  H04L67/568

Abstract: Embodiments of the present disclosure provide a software defined network publish-subscribe system and method. The software defined network publish-subscribe system comprises a controller, an administrator controller, a sequencing subsystem and a message multi-backup cache subsystem. The controller is configured to process publish-subscribe transactions in clusters, and comprises sequencing nodes used for generating ordered serial numbers for messages and cache nodes for caching the messages. The administrator controller is configured to simultaneously perform functions of the controller and manage software-defined network. The sequencing subsystem is configured to realize the cooperative sequencing between the administrator controller and the sequencing nodes. The message multi-backup cache subsystem is configured to realize the consistency of the messages through the administrator controller and the cache nodes. Through the interaction of various modules, the consensus of various subscribers on the messages and the message serial numbers is realized on the software defined network publish-subscribe system.

公开(公告)号：US20230033284A1

公开(公告)日：2023-02-02

申请号：US17958357

申请日：2022-10-01

Applicant: Beijing University of Posts and Telecommunications

Inventor： Bo CHENG ,  Yang ZHANG ,  Shuai ZHAO ,  Junliang CHEN

IPC: H04L67/1008 ,  H04L69/08 ,  H04L67/12

Abstract: Embodiments of the present disclosure provide an Internet-of-Things resource access system and method. The system comprises a protocol management subsystem, a data conversion subsystem, and a load balancing subsystem. The protocol management subsystem is configured to obtain protocol frames from shared storage queues of protocol data packets, use a protocol stack to parse the protocol frames into original data payloads and provide the original data payloads to a data conversion subsystem; the data conversion subsystem is configured to perform protocol management, resource binding and data conversion, load Internet-of-Things resources and convert the original data payloads into observation data through multi-threaded concurrency; and the load balancing subsystem is configured to access the Internet-of-Things resources to the system through virtual IP, connect the Internet-of-Things resource to background service nodes through load balancing servers and send the protocol frames to the shared storage queues of the protocol data packets.