Data storage method based on segmented memory
A data storage and segmented technology, applied in electrical components, transmission systems, etc., can solve problems such as limited node storage capacity and energy, inability to save data, node failure, etc., to achieve effective and convenient information protection functions, convenient programming, The effect of reducing energy consumption
Inactive Publication Date: 2016-03-09
STATE GRID CORP OF CHINA
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[0003] (1) Centralized storage, the node transmits the collected sensing data to the Sink node (convergence point) for storage, and other nodes in the network need to transmit the sensing data to the Sink node, which will consume more energy, especially when sensing When the data collection is fast, in addition, some nodes adjacent to the Sink node need to forward a large amount of sensing data collected by other nodes, which may easily cause these nodes to fail due to excessive energy consumption.
[0004] (2) Local storage. The node stores the collected sensing data in its own memory. The storage capacity and energy of the node are limited, and the data in the long-term historical period cannot be saved, and it is easy to lose the data. Feedback from nodes, the query delay is long
[0005] (3) Segmented storage, data-centric storage strategy, perception data is stored in some nodes in WSN according to a specific information intermediary mechanism, the disadvantage is that the required information intermediary mechanism is complex and requires additional costs
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[0018] The segmented storage-based data storage method organizes all nodes in the WSN database into a tree routing structure with the Sink node as the root, and selects some of the nodes as storage nodes, and the sensing data collected by any node travels to the Sink along the path. The node transmits until it encounters a storage node and is saved. The perception data collected by the node is stored in the nearest storage node on the path from the node to the sink node. After the sink node receives the query request, it The data performs query processing, and at the same time distributes query commands to adjacent nodes, and waits to receive feedback data from other storage nodes after query execution.
[0019] Nodes are divided into two categories: ordinary nodes and storage nodes. Some ordinary nodes only collect sensing data, and some ordinary nodes also forward received data. In addition to collecting sensing data and forwarding data, storage nodes also store data, perform...
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The invention discloses a data storage method based on segmented memory, and relates to the technical field of data storage. The storage method comprises the steps of organizing all nodes in a WSN database into a tree-shaped routing structure with a Sink node as the root, selecting some of the nodes as storage nodes, transmitting sensing data acquired by any node to the Sink node, storing the sensing data acquired by each node in a closest storage node on a path from the node to the Sink node, executing query processing of sensing data stored by the Sink node after the Sink node receives a query request, distributing query commands to the adjacent nodes in the meantime, and waiting to receive feedback data after other storage nodes execute the query. The invention introduces the segmented storage method, facilitates programming, and achieves information sharing and information protection in an effective and easy way.
Description
technical field [0001] The present invention relates to the technical field of data storage, and more specifically, the present invention relates to a segmented storage-based data storage method. Background technique [0002] With the development of microelectronics technology and wireless communication technology, wireless sensor network (WSN), as a data-centric network, has become a research hotspot today. In various typical applications of WSN, it is necessary to integrate a large number of Node perception data is stored for future queries. The storage of these perception data has become a difficult problem in WSN research. In the past, people have done a lot of research on the storage strategy of perception data in WSN, which can be roughly divided into the following three types: [0003] (1) Centralized storage, the node transmits the collected sensing data to the Sink node (convergence point) for storage, and other nodes in the network need to transmit the sensing data...
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CPCH04L67/1097H04L67/12H04L67/60
Inventor 刘显明郝悍勇潘理钟华朱正刚杨继海夏一博孙欣
Owner STATE GRID CORP OF CHINA