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Methods and Nodes in Sensor Networks

A sensor network and node technology, applied in the field of sensor networks, can solve the problem of time-consuming flooding routing method

Active Publication Date: 2019-08-09
NEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The disadvantage of flood routing is that it usually takes a long time

Method used

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  • Methods and Nodes in Sensor Networks
  • Methods and Nodes in Sensor Networks
  • Methods and Nodes in Sensor Networks

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Embodiment Construction

[0028] The present invention will now be described in detail with reference to the accompanying drawings, in which illustrative embodiments of the present invention are shown to enable those skilled in the art to implement the present invention. It should be noted that the following drawings and examples are not meant to limit the scope of the present invention to a single embodiment, on the contrary, it is also possible to form other embodiments by exchanging and combining some or all of the described or shown elements of different embodiments. In addition, in the case where known components can be used to partially or fully implement specific elements of the present invention, only those known components will be described that are necessary for understanding the present invention, and the description of these known components will be omitted. Detailed description of other parts to make the present invention more prominent. Unless otherwise indicated herein, those skilled in t...

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Abstract

The invention provides a method and node for a sensor network. The method comprises the following steps: performing delay inequality encoding on local extremum of the physical quantity at each node, wherein a plurality of nodes synchronously send the delay inequality encoding signal of respective local extremum in the same sending window; and determining the extremum of the physical quantity at each node according to the own delay inequality encoding signal and the received delay inequality encoding signal of other node. According to the method provided by the embodiment of the invention, the required time of the global extremum in the network can be greatly shortened.

Description

Technical field [0001] The present invention generally relates to a sensor network, and specifically relates to a method for determining the maximum value in a sensor network, and a node and a sensor network. Background technique [0002] In sensor networks, especially in wireless sensor networks, it is often necessary to obtain the maximum value (for example, the maximum value and / or the minimum value) of all the nodes. For example, sometimes it is necessary to obtain the minimum remaining power of all nodes in the network, because the minimum remaining power determines the longest life of the network. For another example, sometimes it is necessary to use a sensor network to obtain the maximum / minimum temperature, humidity, and illuminance of an area. Therefore, obtaining the maximum / minimum value of a specific physical quantity in a sensor network is one of the most commonly used functions. [0003] Flood routing is a common way to obtain the maximum / minimum value in sensor net...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W40/04H04W40/24H04W84/18
Inventor 宋磊刘慧峰史敬威黄新华杨艳
Owner NEC CORP