John A. Stine

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Wireless network access protocols can assist nodes to conserve energy by identifying when they can enter low energy states. The goal is to put all nodes not involved in a transmission into the doze state. However, in doing so, one must tradeoff the energy and other costs associated with the overhead of coordinating dozing with the energy savings of putting(More)
Multicasting is an essential service in wireless ad hoc networks. Applying multicasting concepts developed for wireline networks is inappropriate since they create stateful solutions (i.e. nodes learn to react to the receipt of a multicast packet.) which are short lived when topology varies. They require frequent exchanges among nodes with an attendant(More)
Multiple energy conserving approaches have been proposed for wireless networks that are exploited by the link layer and network layer protocols. Unfortunately, integrating these approaches in ad hoc networks is difficult. Due to the temporally random nature of access protocols, methods based on entering low energy states cause severe degradation of network(More)
We propose a novel medium access control protocol for ad hoc wireless networks called Synchronous Collision Resolution (SCR) . The protocol assumes that nodes in the network are synchronized, thus, nodes with data to send can contend simultaneously for the channel. Nodes contend for access using a synchronous signaling mechanism that achieves two(More)
Directional antennas are a promising technology for use in mobile ad hoc environments. By consuming smaller volumes than omni directional antennas, directional antennas enable significant increases in network capacity by allowing more simultaneous transmissions to occur within a multihop wireless network. In this paper, we present some of the challenges(More)
In this paper we describe a new simulation tool used to study the creation and optimization of propagation maps for Node State Routing protocols within wireless and mobile ad hoc networks. The simulation is developed in MATLAB and interfaces with DLL libraries for network data management support. These DLL libraries also have applications within OPNET for(More)