A publish/subscribe service method based on xmpp protocol in industrial measurement and control network
A technology of measurement and control network and subscription service, which is applied in the direction of data exchange network, digital transmission system, electrical components, etc. It can solve the problems of inability to support dormant nodes and periodic data release to provide strong support, so as to achieve lightweight and reduce Hardware resource requirements, complexity reduction effects
Active Publication Date: 2019-02-15
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology
However, the publishing / subscribing mechanism in the current XMPP protocol is mainly event-based publishing, which cannot provide strong support for periodic data publishing, nor can it provide support for dormant nodes.
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[0032] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
[0033] In the industrial measurement and control network based on the XMPP protocol, the management and maintenance of the subscription relationship between the publisher and the subscriber is undertaken by the XMPP server, not just as a channel for data forwarding. figure 1 It is a flowchart of the XMPP publish / subscribe service method of the present invention, and the specific implementation process of the method provided by the present invention is as follows:
[0034] 1. Publish / subscribe process description
[0035] figure 2 It is an application scene diagram of the XMPP publish / subscribe service method. The XMPP publish / subscribe service method not only supports the publish / subscribe between the wireless sensor network field network clients, but also supports the Internet client to connect the server through the Internet network to ...
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The present invention relates to an extensible messaging and presence protocol (XMPP)-based service releasing and subscribing method in an industrial measurement and control network, relating to the technical field of industrial measurement and control networks. On the basis of a series of protocol standards of the XMPP, an XMPP-based releasing and subscribing method is designed according to the features of the industrial measurement and control network and application requirements. According to the method, a releasing and subscribing relationship maintenance and management function is mainly added in an XMPP server, and supports event-based releasing and periodical data-based releasing. In addition, for an energy-saving requirement of the industrial measurement and control network, a support mechanism for a sleep sensor node is added in the releasing and subscribing method. Through adoption of the method, releasing and subscribing between field network clients in the industrial measurement and control network are realized, and further, releasing and subscribing between the industrial field network client and the internet client are supported. Through adoption of the XMPP-based service releasing and subscribing method realized in the industrial measurement and control network, complexity of realizing a releasing function by a releaser is lowered, and energy overhead of the industrial measurement and control network is saved.
Description
technical field [0001] The invention belongs to the technical field of industrial measurement and control networks, and relates to a publish / subscribe service method based on the XMPP protocol in the industrial measurement and control network. Background technique [0002] Industrial measurement and control networks include various network structures from instrumentation electrical, field bus, industrial Ethernet to wireless networks, and the integration of wired and wireless network technologies to realize heterogeneous industrial measurement and control networks is a new development trend, which promotes the Internet of Things technology Development in the field of industrial field measurement and control. And the publish / subscribe service mode is an important method of industrial measurement and control network data communication. However, there are many communication protocols in the field of industrial measurement and control, but there are problems such as incompatibi...
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IPC IPC(8): H04L12/24H04L29/06
CPCH04L41/50H04L41/5058H04L65/40
Inventor 王平刘玉强王恒
Owner CHONGQING UNIV OF POSTS & TELECOMM