A method and device for sending data
A technology for sending data and data, which is applied in the field of wireless sensor network data processing, and can solve problems such as reducing data transmission efficiency, conflicts and collisions, and reducing communication efficiency
Active Publication Date: 2019-12-20
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology
[0005] 1) Reduce data transmission efficiency: All nodes send the collected data to the aggregation node separately, which may increase the coordination difficulty of the data link layer during the transmission process, causing frequent conflicts and collisions, and reducing communication efficiency
2) Waste of network resources and energy: The resources of wireless sensor network nodes are very limited, mainly in terms of battery energy and communication bandwidth. If each node sends its collected data to the sink node, it will be transmitted in the wireless sensor network Redundant data will not only waste bandwidth resources, but also consume a lot of energy of network nodes
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[0048] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0049] A method and device for sending data proposed by the present invention is applied to a wireless sensor network, and each node in the wireless sensor network collects data, and the collected data can be any one of temperature, humidity or pressure, etc. Of course, it is not limited to the above-mentioned ones.
[0050] like figure 1 as shown, figure 1 A flow chart of a method for sending data provided by an embodiment of the present invention, the method is...
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The embodiment of the invention discloses a method and a device for sending data. The method comprises the steps of determining a first data space correlation degree of one node in a wireless sensor network according to data collected by the node and received data collected by each data neighborhood node; sending the first data space correlation degree of the node to each neighboring node, receiving a second data space correlation degree determined by each neighboring node, determining the first data space correlation degree of the node and the first greatest data space correlation degree in the second data space correlation degrees, and judging whether the first greatest data space correlation degree is equal to the first data space correlation degree or not; and receiving first update information sent by the data neighborhood nodes of the node within a set time, judging whether the second greatest data space correlation degree carried in each piece of first update information is greater than the first data space correlation degree or not, if all not, sending the data collected by the node to an aggregation node, and removing redundant data, thereby improving the information transmission efficiency, and saving network resources and energy.
Description
[0001] technology neighborhood [0002] The invention relates to the technical field of wireless sensor network data processing, in particular to a method and device for sending data. Background technique [0003] Wireless sensor networks (Wireless Sensor Networks, WSNs) are composed of a large number of sensing nodes densely distributed in the monitoring area, and wireless communication between the nodes. Wireless sensor networks are widely used. The nodes in the wireless sensor network can collect the attribute values of the surrounding environment. The task of the wireless sensor network is to reliably and accurately describe the physical characteristics of the network coverage area through the data collected by each node. . Due to the spatial continuity of collected data and the dense deployment of nodes, there is a high spatial correlation between nodes in wireless sensor networks, so that the data collected by adjacent nodes usually have a high degree of similarity. T...
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IPC IPC(8): H04W40/24H04W52/02
CPCH04W40/248H04W52/0206Y02D30/70
Inventor 唐碧华张兴博张洪光吴帆范文浩
Owner BEIJING UNIV OF POSTS & TELECOMM