Date of Award

8-2016

Document Type

Thesis

Degree Name

Master of Science (MS)

Legacy Department

Electrical Engineering

Committee Member

Dr. Harlan B. Russell, Committee Chair

Committee Member

Dr. Daniel L. Noneaker

Committee Member

Dr. Kuang-Ching Wang

Abstract

In mobile ad hoc networks without centralized control distributed transmission scheduling protocols for channel access are of interest. Many scheduling-based MAC protocols have been proposed to provide contention-free transmissions and to guarantee certain levels of performance. However, one of the major drawbacks of these protocols is that once a slot is assigned to a particular node if the node does not have a packet to transmit, then the slot is not utilized. This leads to a poor network performance. In our proposed protocol these assigned but un-utilized slots are recovered by other nodes. We use custom computer simulations to compare our new protocol against two ap-proaches that do not recover wasted slots. The simulation models the performance of the physical and link layers and includes a limited network layer that supports end-to-end for-warding of traffic. Through investigations of random networks with varying densities we conclude that our new approach results in an increase in the capacity of the network.

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