Implementation of an openflow-based wireless sensor network and data flow processing method
A technology of wireless sensor and implementation method, which is applied in network topology, wireless communication, data exchange network, etc., can solve the problems of restricting the development of wireless sensor network, reducing the overall compatibility of the network, and single structure, so as to achieve dynamic configuration and reconstruction Effect
Active Publication Date: 2018-01-09
HUAQIAO UNIVERSITY +1
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Problems solved by technology
The protocol stack is the core of the wireless sensor network. However, its research is still immature, and many technologies have not formed a unified standard. Many research institutions have launched various wireless sensor network protocol stacks based on their own needs, but the structure is relatively simple. Can target specific protocols, which limits the development of more flexible wireless sensor networks and reduces the overall compatibility of the network
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[0028] The method of the present invention will be further described below in conjunction with the accompanying drawings.
[0029] The network node structure of an OpenFlow-based wireless sensor network implementation method of the present invention is as follows figure 1 shown.
[0030] The wireless sensor network node includes a node hardware layer, a hardware abstraction layer, an embedded operating system, and a node application program; the node hardware layer further includes hardware devices supporting wireless sensor network data collection and radio frequency communication; the hardware abstraction layer further Including basic input and output interfaces of network nodes, communication interfaces, sensor drivers, etc.; the embedded operating system further includes a configuration management module, a basic network action module and a data flow processing rule table; Node applications can be freely customized by users.
[0031] The flow of a data flow processing me...
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The invention discloses an OpenFlow-based wireless sensor network implementation and data flow processing method. A data flow rule table is established in the sensor node protocol stack. The rule table includes multiple sets of data flow matching entries, and each entry further includes several Matching rules and table item actions; through wireless sensor network user configuration or local node itself modifying the data flow rule table, the control of network data flow forwarding strategy is realized. The invention realizes hardware-independent and protocol-independent wireless sensor network control strategies, flexibly supports existing protocols, and supports dynamic updating of network strategies.
Description
technical field [0001] The invention relates to the field of wireless sensor networks, in particular to a wireless sensor network realization and a data flow processing method. Background technique [0002] The self-adaptive and multi-hop properties of Wireless Sensor Network (WSN) enable network nodes to communicate quickly. Its structure and function are quite different from traditional network nodes. Nodes usually need to simultaneously collect information and process signals. and wireless communications. The difference in structure also leads to poor network abstraction and maintainability, difficulty in network policy reconstruction and network management. [0003] Software Defined Network (SDN) was originally used to enhance the programmability and flexibility of wired networks. As one of the popular implementation technologies of SDN, OpenFlow provides simple implementations for different network applications, protocols and management requirements. OpenFlow realize...
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IPC IPC(8): H04W40/02H04W40/24H04W84/18H04L12/721H04L12/741H04L45/74
CPCH04L45/38H04L45/745H04W40/02H04W40/248H04W84/18
Inventor 蒋文贤古辰哲吴晶晶
Owner HUAQIAO UNIVERSITY