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Zigbee hidden conflict resolution method for wireless sensor network

A wireless sensor and analysis method technology, applied in the field of Zigbee hidden conflict analysis of wireless sensor networks, can solve problems such as increased energy consumption, and achieve the effects of less extra overhead, improved throughput and energy utilization, and low message complexity

Inactive Publication Date: 2012-07-11
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, P-frozen algorithm nodes also need to have the operation of exiting GTS. If the node sends a small amount of data, frequently joining and exiting GTS will lead to increased energy consumption

Method used

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  • Zigbee hidden conflict resolution method for wireless sensor network
  • Zigbee hidden conflict resolution method for wireless sensor network
  • Zigbee hidden conflict resolution method for wireless sensor network

Examples

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Embodiment example 1

[0034] Implementation Case 1: Industrial Monitoring Site

[0035]The industrial monitoring site must be safe, timely, stable and flexible. The status of the scattered hazardous chemicals collected during the monitoring process and the status of the surrounding environment must be transmitted to the central node in real time and reliably for unified processing, so as to achieve safety monitoring and alarm. The invention can well collect the data of each WSN node scattered in the monitoring area, avoid the collision loss of data caused by hidden node relationships, and improve the stability and reliability of the data transmission of the whole network.

[0036] 1. Design a WSN node. The WSN node is composed of a sensor module, a processor module, and a wireless transmission module. The sensor module is responsible for monitoring the environmental coefficient of the industrial site, and the processor is responsible for simple processing of the monitored environmental coefficien...

Embodiment example 2

[0062] Implementation Case 2: Agricultural Monitoring

[0063] Agricultural coverage is large, the terrain is complex, and the operating environment is relatively harsh. General agricultural equipment cannot adapt to it. However, WSN has become an effective method for agricultural information collection and transmission due to its high node density, large range, and strong dynamic characteristics. The monitoring system generally includes wireless sensor modules, aggregation nodes and computer systems. Introducing the dynamic grouping method in the wireless sensor network for agricultural monitoring can reduce the data conflict caused by the hidden relationship and ensure the reliability of data transmission.

[0064] 1. Design a WSN node. The WSN node is composed of a sensor module, a processor module, and a wireless transmission module. The sensor module is responsible for monitoring the temperature, humidity and other information of the agricultural environment, and the pr...

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Abstract

The invention discloses a Zigbee hidden conflict resolution method for a wireless sensor network. A hidden node problem is an important factor for the performance degradation of an IEEE802.15.4 protocol. According to the method, a contention free period (CFP) of the IEEE802.15.4 is equally divided into a plurality of timeslots, the address information of hidden nodes is extracted from a partially-damaged frame caused by a hidden conflict, the nodes are dynamically regulated into different competition groups according to a currently acquired hidden relationship, the nodes in the same competition groups competitively transmit messages according to a binary backoff method in the same period, and the nodes in different competition groups transmit the messages in different timeslots, so that the problem of hidden conflict is completely solved. Compared with other hidden conflict resolution methods, a conflict-identification-and-grouping-based hidden conflict avoidance method has the advantages of low additional overhead, dynamic regulation and the like, and a data transmission rate, throughput and an energy utilization rate are remarkably increased.

Description

technical field [0001] The invention relates to the technical field of network communication MAC protocol optimization, in particular to a Zigbee hidden conflict analysis method for a wireless sensor network. Background technique [0002] As a new type of network and computing technology, wireless sensor network can transmit the constantly changing information in the objective world to people and provide people with various forms of data and services. Wireless sensor networks have the advantages of adaptability, invulnerability, easy deployment and low cost, etc., and have a wide range of applications in environmental monitoring, industrial and mining enterprise information collection, harsh environment data collection, military and national defense applications. IEEE802.15.4 protocol is a wireless access protocol with low power consumption, short distance, low rate and low complexity. It is the main MAC protocol in wireless sensor network at present, and has great developme...

Claims

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Application Information

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IPC IPC(8): H04W24/02H04W80/02H04W84/18
CPCY02B60/50Y02D30/70
Inventor 李拥军苏悦洪谢嵘邹少聪
Owner SOUTH CHINA UNIV OF TECH
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