#### Date of Award

3-10-2010

#### Document Type

Thesis

#### Degree Name

Master of Science in Electrical Engineering

#### Department

Department of Electrical and Computer Engineering

#### First Advisor

Rusty O. Baldwin, PhD

#### Abstract

Wireless sensor networks require specialized protocols that conserve power and minimize network traffic. Therefore, it is vitally important to analyze how the parameters of a protocol affect these metrics. In doing so, a more efficient protocol can be developed. This research evaluates how the number of nodes in a network, time between generated agents, lifetime of agents, number of agent transmissions, time between generated queries, lifetime of queries, and node transmission time affect a modified rumor routing protocol for a large-scale, wireless sensor network. Furthermore, it analyzes how the probability distribution of certain protocol parameters affects the network performance. The time between generated queries had the greatest effect upon a network’s energy consumption, accounting for 73.64% of the total variation. An exponential query interarrival distribution with a rate of 0.4 queries/second/node used 25.78% less power than an exponential distribution with a rate of 0.6 queries/second/node. The node transmission time was liable for 73.99% of the total variation in proportion of query failures. Of three distributions, each with a mean of 0.5 seconds, the proportion of query failures using a Rayleigh transmission time distribution was 14.23% less than an exponential distribution and 18.46% less than a uniform distribution. Lastly, 54.85% of the total variation in the mean proportion of time a node is uninformed was a result of the time between generated agents. The mean proportion of time a node is uninformed using an exponential agent interarrival distribution with a rate of 0.005 was 6.59% higher than an exponential distribution with a rate of 0.01.

#### AFIT Designator

AFIT-GE-ENG-10-09

#### DTIC Accession Number

ADA518514

#### Recommended Citation

Francik, Peter R., "Analysis of a Rumor Routing Protocol with Limited Packet Lifetimes" (2010). *Theses and Dissertations*. 2010.

https://scholar.afit.edu/etd/2010