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Method for selecting aggregation node in network

A node and network technology, applied in the field of selecting aggregation nodes, which can solve problems such as short lifetime

Active Publication Date: 2012-01-25
NEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the energy consumption of a device (i.e., a sensor node) grows linearly with the amount of data sent during a send, sending all sensor data to its final destination would result in a too-short lifetime

Method used

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  • Method for selecting aggregation node in network
  • Method for selecting aggregation node in network

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Embodiment Construction

[0029] Referring in more detail to the attached drawing, the sole figure shows an application scenario of the method according to the invention. As an illustration, the figure shows a sensor network 1 with a plurality of sensor nodes using S 1 to S n These sensor nodes are marked according to their numbers. aggregation node A tFor sensor node S 1 to S n The sensed sensor data is aggregated. Usually, when sink node 2 requests, aggregation node A t Forward the collected data to the sink node 2, the sink node 2 and the sensor node S i and rendezvous node A t The difference is a specific device with sufficiently large physical resources. For clarity, only one rendezvous node A is shown in the figure t , and in A t There is no intermediate node between and sink node 2.

[0030] The sensor network 1 is shown in the state at epoch t, ​​during epoch t, ​​denoted by A t The sensor nodes act as aggregation nodes. At the beginning of the next period t+1, the protocol starts ...

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Abstract

The invention discloses a method for electing aggregator nodes in a network, wherein the network (1) comprises a plurality of sensor nodes (Si) to measure data, and wherein at least one of the sensor nodes (Si) functions as aggregator node (A) to aggregate sensored data obtained by at least a subset of the sensor nodes (Sj), and wherein the network further comprises at least one sink node (2) to collect data aggregated by the aggregator nodes (A), the method comprising: establishing pairwise secret keys (ki) between a current aggregator node (At) and each sensor node (Si) of the subset of sensor nodes from which the current aggregator node (At) obtains sensored data; at each of the sensor nodes (Si) of said subset, choosing a random number (ri) and encrypting the random number (ri) using the established key (ki); providing a communication chain between the sensor nodes (S,) of said subset and summing the encrypted random numbers (ri) of all sensor nodes (Si) of said subset; and determining a new aggregator node (At+1) on the basis of the resulting sum according to a predefined calculation scheme.

Description

technical field [0001] The present invention relates to a method for selecting an aggregator node in a network, wherein the network comprises a plurality of sensor nodes for measuring data, wherein at least one sensor node acts as an aggregator node for aggregating The sensory data obtained by the subset, the network further includes at least one sink node (sink node) for collecting the data aggregated by the aggregation node. Background technique [0002] The above methods are well known in the prior art and are especially important in the context of Wireless Sensor Networks (WSN). WSNs are ad hoc networks comprising small sensors with limited computing power and energy capacity. [0003] All sensors in a sensor network are sensor nodes that communicate wirelessly, and the sensor nodes generally include: a probe, a processing unit, a communication device, and a battery. Sensor nodes include: data acquisition, communication and computing functions in the smallest space. D...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04L9/08H04L29/08G05B19/418
CPCH04L63/065H04L67/12H04L9/0838H04L29/08558H04L9/083H04L9/008H04W24/00H04L2209/805H04L2209/16H04W84/18H04W40/02
Inventor 德克·韦斯特霍夫弗雷德里克·阿姆内切
Owner NEC CORP
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