QoS MAC protocol based on application ontologies of wireless sensor network

An ontology, application-oriented technology, applied in the field of data semantic analysis technology, can solve the problems of reducing network QoS performance, not understanding the meaning of data application, etc., to achieve the effect of reducing energy consumption and improving QoS indicators

Inactive Publication Date: 2014-03-26
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

WSN is an application-oriented network, and the transmission and processing of nodes is data-oriented. Although there is an inevitable relationship between applications

Method used

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  • QoS MAC protocol based on application ontologies of wireless sensor network
  • QoS MAC protocol based on application ontologies of wireless sensor network
  • QoS MAC protocol based on application ontologies of wireless sensor network

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0046] Step 1: Use the OGC SWE description framework and SensorML language to mark the application and its related data to get the basic concept.

[0047] The data to be labeled consists of three parts:

[0048] (1) The content of the network application: the application's spatial information, time information, physical quantity data, and application type. In addition, content can be added based on the composition and characteristics of the application content, such as data accuracy, reliability, and value range, etc. .

[0049] (2) QoS parameters: QoS parameters, parameter measurement, service type, relationship between parameters, impact of parameters on QoS, aggregation characteristics of parameters.

[0050] (3) Node state: the physical quantity measured by the node, the spatial attribute of the physical quantity, the time attribute of the physical quantity, the characteristics of the physical quantity, and the node capability attribute.

[0051] The following example gi...

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Abstract

The invention discloses an application-oriented QoS (Quality of Service) MAC protocol in WSN (Wireless Sensor Network). Basic concepts can be acquired by labeling applications, nodes and QoS parameters to create task ontologies which include the applications, nodes and QoS ontologies. The MAC is separated into four phases which comprise matching tasks, requesting, dispatching and executing. Cluster heads are used for propagating the tasks to be completed. Data packages are classified into three priority levels by cluster nodes according to requirements for quality of service of the tasks to send task requirements. The task requirements are received by a combination of the cluster heads to select the nodes to complete the tasks, and transmission resources are allocated to the nodes according to the QoS status of the nodes. Therefore, a new CSMA/CA approach to identify the priority levels is provided, the transmission priority levels of nodes are controlled by different sizes of contention windows and arbitration interframe space, and a node back-off time selection method based on the residual energy of nodes is provided. Furthermore, separated MAC protocol processes of cluster heads and cluster nodes and the application process of semantic inference rules in MAC are provided.

Description

technical field [0001] The invention relates to wireless sensor network MAC technology, service quality control technology, and data semantic analysis technology. Background technique [0002] MAC (Medium Access Control) in wireless sensor network (Wireless Sensor Network, WSN) is an important basic link to determine the performance of the network, and it is also one of the keys to guarantee the quality of service provided by the network. One of the prominent features of WSN is the sensitivity of energy consumption, so most of the MAC research focuses on the energy consumption performance of the network, and there are relatively few studies on the quality of service. With the development of application requirements, QoS MAC in WSN has received more and more attention, and the existing research can be generally divided into three categories. The first category is to reduce the transmission delay by adjusting the sleep cycle, improving backoff rules, and dynamically adjusting...

Claims

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Application Information

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IPC IPC(8): H04W28/16H04W28/18H04W84/18
CPCY02B60/50Y02D30/70
Inventor 熊庆旭孟凡勇
Owner BEIHANG UNIV
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