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Wireless sensor network cross-application-layer MAC (Message Authentication Code) design method based on application semantics

A cross-application, semantic description technology, applied in the direction of wireless network protocol, network topology, wireless communication, etc., can solve the problems of not fully considering the basic characteristics of WSN, so as to eliminate the inconsistency of processing objects, reduce energy consumption, and improve network transmission time. Delayed effect

Inactive Publication Date: 2014-03-12
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these algorithms are aimed at data transmission and processing, and do not fully consider the basic characteristics of WSN for specific applications.
At present, there is no direct processing of the application layer from the perspective of MAC, so as to realize the WSN MAC algorithm across the application layer

Method used

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  • Wireless sensor network cross-application-layer MAC (Message Authentication Code) design method based on application semantics
  • Wireless sensor network cross-application-layer MAC (Message Authentication Code) design method based on application semantics
  • Wireless sensor network cross-application-layer MAC (Message Authentication Code) design method based on application semantics

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Embodiment Construction

[0024] The implementation of the present invention will be specifically described below through the application of regional snowstorm monitoring.

[0025] First: Annotate the data describing the application

[0026] The application of WSN in this implementation includes five basic parameters of time, space, wind speed, temperature and snowfall. Use the SWE framework and SensorML language in OGC for annotation description. Here, the application is expressed in the form of tasks, and the specific description structure is as follows:

[0027] Task::=

[0028] Task information::=

[0029] Task type::=

[0030] Time attribute::={[end time][duration]}

[0031] Spatial attribute::=

[0032] Spatial type::=

[0033] Coordinate data::=

[0034] Physical quantity data::={……}

[0035] Figure 4 A temperature sensor description is provided that includes temporal, spatial, and inductive measurement parameters. Wind speed and snowfall are described the same as for temperature, w...

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Abstract

The invention provides a cross-application-layer MAC (Message Authentication Code) method directly specific to applications. The method comprises the following steps: selecting time, space and information which is acquired by a sensor in a sensing way on the basis of the basic characteristic of application orientation of a wireless sensor network (WSN) for serving as basic data for describing WSN applications; performing semantic annotation on the data to obtain the basic concepts of applications; establishing a relation among the basic concepts according to the physical characteristics of specific applications, and implementing the relation in the form of a body; establishing body operation and reasoning rules including a general rule, an application-oriented rule and an MAC control rule based on the convexity characteristics of applications; and making a node coordinate with a cluster head on the basis of the semantic description of applications before transmission of information so as to determine information to be transmitted. The invention further provides a specific cross-application-layer MAC algorithm. The cross-application-layer MAC design method provided by the invention can be directly applied to any existing WSN MAC algorithm, and is compatible with an original MAC algorithm. As proved by results, the network energy is saved by over 20 percent.

Description

(1) Technical field [0001] The invention relates to wireless sensor network MAC technology and semantic processing technology, and belongs to the field of wireless sensor network semantic communication. (2) Background technology [0002] The existing wireless sensor network (Wireless Sensor Network, WSN) consists of a large number of small sensor nodes densely distributed to form an ad hoc network, and the nodes are powered by batteries, so energy efficiency is the most basic requirement of WSN. MAC technology is one of the core technologies of the network, so the first consideration of MAC in WSN is energy saving. At present, a large number of MAC algorithms have been proposed, such as the representative Sensor-MAC (S-MAC), WiseMAC, and Timeout-MAC (T-MAC). To achieve the effect of energy saving. In order to further improve performance such as energy consumption, cross-layer MAC algorithms such as physical layer and routing layer are proposed, such as typical LESOP, ECPS ...

Claims

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Application Information

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IPC IPC(8): H04W80/02H04W84/18
CPCY02B60/50Y02D30/70
Inventor 熊庆旭李想
Owner BEIHANG UNIV