Quality of service of a wireless home network using various routing protocols - Embedded.com

Quality of service of a wireless home network using various routing protocols

Wireless Sensor Networks (WSNs) are fully autonomous self-configuring ad-hoc networks. Its new emerging applications are related to monitoring and control in home, office, industrial, and outdoor environments. WSNs may consist of thousands of tiny and enormously energy-constrained nodes, which communicate wirelessly with each other, sense their environment, and share collaborative tasks.

Due to the large number of nodes, frequent battery replacements are difficult; hence, the network lifetime should be in years requiring a very careful design of communication protocols, algorithms, and hardware platforms.

The growth of mobile computing devices including laptops, personal digital assistants (PDAs), and wearable computers have created a demand for wireless personal area networks (WPANs). To meet these challenges, IEEE 802.15.4 low rate wireless personal area network (LR-WPAN) standard has been introduced. The goal of the IEEE 802.15.4 standard is to provide a low-power, low-cost, and highly reliable protocol for wireless connectivity among inexpensive, fixed and portable devices.

These devices can form a sensor network or a Wireless Personal Area Network (WPAN). Thus it suits wireless sensor network applications where a large number of tiny smart sensors having the low power, low range, and low bandwidth are deployed in an ad hoc manner for the purpose of automation.

ZigBee is an open specification built on the IEEE 802.15.4 Physical and MAC layer standard for low-power wireless networking, which complements the LR-WPAN standard with network and security layers and application profiles. For security and reliability, ZigBee supports access control lists, packet freshness timers, and 128-bit Advanced Encryption Standard (AES). Different stack profiles are defined for home control, building automation, and plant control applications.

This paper provides the performance analysis of different wireless mobile ad hoc routing protocols like OLSR INRIA, OLSRv2 NAGATA, ZRP, AODV and DYMO by measuring parameters such as packet delivery, average end-to-end delay, jitter and throughput on the zigbee home automation using static IEEE 802.15.4 star topology.

Measurements of jitter for different routing protocols showed that OLSR INRIA and OLSRv2 NAGATA produced the lowest value of 0.04, DYMO produced highest value of 1.27, and AODV and ZRP produced a value of 0.43 and 0.10 respectively. So, in terms of jitter OLSR INRIA and OLSRv2 NAGATA performs better than other protocols since low jitter corresponds to high efficiency.

The results show that even though AODV gives the highest throughput of 95% and receive 25 packets which is highest amongst all five protocols but still overall OLSR INRIA is the best suited routing protocol for CBR application of Zigbee home automation since it produced lowest jitter value of 0.04 and lowest average end- to-end delay value of 0.23 which are both favorable conditions for better performance of CBR application of Zigbee home automation network.

The findings suggest that although AODV produces a little higher throughput and receives slightly more number of packets than all other protocols, making it  a suitable choice for zigbee home automation networks, nonetheless OLSR INRIA is the best suited protocol for CBR application of zigbee home automation network because of the fact that AODV’s throughput value and number of packets received is not significantly higher than OSLR INRIA.

Also, OSLR INRIA performs better overall and produce less jitter and average end to end delay as compared to all other protocols.

To read more of this external content, download the complete paper from the author archives at the International Journal of Computer Applications .http://www.ijcaonline.com/volume13/number2/pxc3872386.pdf

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