Method for efficient service access between fixed cloud and edge node in dynamic complex scene

Abstract

The invention relates to a method for efficient service access between a fixed cloud and an edge node in a dynamic complex scene. The method comprises the following steps: (a) constructing a distributed service directory management model supporting cloud-edge coordination based on a hierarchical structure of the fixed cloud and the edge node; (b) based on the distributed service directory management model, service directory synchronization between a cloud edge and an edge based on a' publish-subscribe 'mechanism is carried out; (c) dynamically predicting behaviors and routes of the edge nodesand the specific units by adopting a prediction model, evaluating an optimal mapping relationship between the edge nodes and the specific units, and accelerating dynamic switching of services; whereinthe edge node provides a service, and the specific unit uses the service; and (d) performing access among a plurality of service instances between the cloud edge or the edge through the transparent agent oriented to cloud edge coordination. Reliable, transparent and efficient service access between the fixed cloud and the edge node in a dynamic complex scene can be realized.

Description

technical field [0001] The invention belongs to the field of service access and relates to a method for efficient service access, in particular a method for efficient service access between a fixed cloud and an edge node in a dynamic and complex scene. Background technique [0002] When high-mobility special units (or specific units) access service directory management in dynamic and complex scenarios, version management and transparent access requirements for cloud (ie, fixed cloud) edge (ie, edge nodes) collaboration and dynamic and complex scenarios are proposed. [0003] In 2005, Zhu Yandong carried out related research on transparent access in the information grid environment, proposed the use of metadata technology, modeling through XML Schema, and then combined metadata and directory services to provide metadata directory services, and finally realized the information grid Efficient, heterogeneous, and transparent access to information resources in the environment; at...

AI Technical Summary

Problems solved by technology

This traditional way of constructing service catalogs based on centralized management cannot solve the following problems in dynamic and complex scenarios: (1) Due to differences in resource scale, network bandwidth, and delay, fixed cloud service centers and edge service There are differences in configuration and service capabilities between roles and service instances started, and this difference needs to be considered when building a service directory model to achieve higher flexibility; (2) Edge nodes and special units have a high degree of mobility and access Uncertainty, and changes and replacements occur at any time with the execution of tasks, requiring the service catalog to be able to sense changes in time and update them quickly; (3) Due to the strong confrontation and complexity of dynamic and complex scenarios, fixed cloud and edge Communication links between nodes, edge nodes, and between edge nodes and special units have severely limited bandwidth (for example, some wireless links can only reach 9.6kbps bandwidth), excessive delay (reaching the second level), or even intermittent The continuous inability to stay online has brought new challenges to the consistent maintenance, timely update and fast switching of the service catalog

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