An Anchor Node Scheduling Method in Wireless Sensor Network Location
A wireless sensor and network positioning technology, applied in wireless communication, connection management, advanced technology, etc., to achieve the effect of extending network life, reducing the number of nodes, and reducing energy consumption
Active Publication Date: 2020-06-19
SOUTHEAST UNIV
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Problems solved by technology
[0004] The technical problem to be solved by the present invention is to select the anchor nodes that meet the user's requirements without destroying the self-organization characteristics of the wireless sensor network, so as to save the energy consumption of the entire network and prolong the network life
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[0040] The present invention provides an anchor node scheduling method in wireless sensor network positioning. The method is a centralized scheduling method based on Software Defined Networking (SDN) technology. The SDN controller calculates the connection degree of blind nodes and communicates with the The established threshold is compared to determine the state of the anchor node in each time slot. The method includes the following processes:
[0041] (1) At the initial moment, the mobile blind nodes in the network broadcast wake-up information, and all the anchor nodes within its communication range are woken up and send the position, initial energy, remaining energy and the distance to the blind node to the SDN controller and other information. After receiving the information, the controller creates an information table for the anchor node, stores its relevant information in the table, and calculates its timer and sends it to it;
[0042] (2) At the beginning of each new...
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The present invention proposes an anchor node scheduling method in wireless sensor network positioning, which is a centralized scheduling method based on software-defined network technology. Mobile blind nodes in the network broadcast wake-up information to nodes within their communication range, and the awakened anchor nodes send their own information to the SDN controller. The controller establishes an information table for the awakened anchor nodes, and designs timers for them at the same time. When an anchor node finishes timing, it sends a request message to the controller. The controller calculates the connection degree of the blind node at the current moment and compares it with the established threshold. ”, the controller updates the information table of the anchor node at the same time. Repeat the above process in each time slot until the positioning ends. The above method schedules the positioning anchor nodes in the case of limited energy of the wireless sensor network, which saves energy consumption and prolongs the life of the network.
Description
technical field [0001] The invention relates to the technical field of positioning in wireless sensor networks, in particular to an anchor node scheduling method in wireless sensor network positioning. Background technique [0002] Wireless Sensor Networks (WSN) has received more and more research attention because of its broad application prospects. These applications are generally based on the specific location of sensor nodes, such as environmental monitoring, object tracking, and indoor navigation. Although GPS (Global Positioning System) satellite signals are currently used for positioning, in some specific scenarios, the signal may not be received or the signal is too weak to meet the positioning requirements. Therefore, it is very important to study positioning technology in wireless sensor networks. meaning. [0003] Considering the energy-constrained characteristics of wireless sensor networks, it is necessary to reduce the number of anchor nodes involved in positi...
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IPC IPC(8): H04W52/02H04W64/00H04W72/12H04W76/40
CPCH04W52/0248H04W52/0274H04W64/003H04W64/006H04W76/40H04W72/542Y02D30/70
Inventor 燕锋朱亚萍沈连丰章跃跃夏玮玮胡静宋铁成
Owner SOUTHEAST UNIV