Opnet, Arne, and the Classroom

This paper examines OPNET Technology, Inc\u27s management programs, and Regis University\u27s Academic Research Network (ARNe) needs to find out which OPNET programs can meet the needs of ARNe. The method used was to examine ARNe\u27s needs, and research Microsoft\u27s SMF/MOF management framework, research OPNET\u27s program and module offerings, research OPNET\u27s University Program, and research how OPNET\u27s programs are used at some other universities. The research was used to create a match up between Microsoft\u27s Service Management Functions and OPNET\u27s programs and modules. And it was used to create a list of textbooks, labs, and lab manuals that would work with OPNET\u27s IT Guru and Modeler in a classroom to help teach networking theory. The examination was combined with the research to create an evaluation criteria matrix from which project recommendations could be drawn. The conclusion was that the following OPNET Technology programs and modules could be of benefit to Regis University\u27s ARNe - ACE, Automation module, Commander, DAC module, Flow Analysis module, IT Sentinel, IT Guru, NetDoctor, Report Server, and VNE Server

Computational power conservation technique using mobility adaptation method in MANET

In this paper, a new technique is proposed for conserving power in mobile ad hoc wireless network. The technique is based on the existing on-demand ad hoc routing protocols with the addition of power model. The unique feature of the technique is that mobile nodes will be able to evaluate their power status to decide if they are fit for packet forwarding and reception. This is illustrated using computational approach supported by computer simulations over mobile ad hoc wireless network containing 18 mobile nodes. The proposed technique is incorporated into the Ad Hoc On demand Distance Vector (AODV) and Dynamic Source Routing (DSR) protocols. The results showed that using power saving technique reduces power consumption to more than 15% rate at which mobile nodes achieved with no much delay in the network as compared to the conventional network configured with AODV and DSR routing protocols

Effect of real video streaming over virtual MANET environment

Wireless Ad hoc Network is promising in solving many challenging real-world communication problems. Examples of these are: military field operation, emergency response system, and oil drilling and mining operation. However, the wide deployment of this type of network is still a challenging task. It is very difficult to manage quality of services for real time applications like video transmission over mobile nodes. Mobile ad hoc networks are not so resilient and reliable because of their dynamic topology due to the mobile nodes and impact of environmental circumstances. However, it provides multiple routes from the source to the destination, which gives extra redundancy for video and data transmission. In this research work, I will analyze the effect of real video streaming in virtual simulation environment using mobile ad hoc network, terrain modeling module and the System-in-the-loop modules from the OPNET modeling tool

Models for information propagation in opportunistic networks

The topic of this thesis is Opportunistic Networks (OPNETS), a type of mobile ad hoc network in which data are propagated by the movement of the network devices and by short-range wireless transmissions. This allows data to spread to many devices across large distances without the use of any infrastructure or powerful hardware. OPNET technology is in its fairly early stages of development and has a lot of potential for research. There are many applications that could benefit from OPNETS, such as sensor networks or social networks. However, before the technology can be used with confidence, research must be undertaken to better understand its behaviour and how it can be improved. In this thesis, the way in which information propagates in an OPNET is studied. Methodical parameter studies are performed to measure the rate at which information reaches new recipients, the speed at which information travels across space, and the persistence of information in the network. The key parameters being studied are device density, device speed, wireless signal radius and message transmission time. Furthermore, device interaction schemes based on epidemiological models are studied to find how they affect network performance. Another contribution of this thesis is the development of theoretical models for message spread in regions of one-dimensional (1D) and two-dimensional (2D) space. These models are based on preliminary theoretical models of network device interaction; specifically, the rate at which devices move within range of each other and the length of time that they remain within range. A key contribution of this thesis is in acknowledging that data transmissions between devices do not occur instantaneously. Due to latency in wireless communications, the time taken to transmit data is proportional to the amount of data being transferred. Non-instantaneous transmissions may fail before completion. Investigation is made into the effect this has on the rate of information propagation in OPNETS

Performance Analysis and Enhancement of QoS Framework for Fixed WiMAX Networks. Design, analysis and evaluation of 802.16 Point-to-Multipoint (PMP) Quality of Service Framework based on uplink scheduler and call admission control analysis.

Given the current developments and advances in the scientific and technological aspects of human knowledge and introducing new approaches in various fields of telecommunication technologies and industries, there has been an increasing growth in its players¿ plans and a positive change in their outlooks in order to achieve the target of "anywhere and anytime access". Recent developments of WiMAX (Worldwide interoperability for Microwave Access) networks, as a sign of increasing needs and demands for new telecommunication services and capabilities, have led to revolutions in global telecommunication which should be perceived properly in terms of the commercial and technical aspects in order to enjoy the new opportunities. Most experts believe that WiMAX technology is a preliminary step to develop Fourth Generation networks known as 4G technologies. It has not only succeeded in the utilization of several of the latest telecommunication techniques in the form of unique practical standards, but also paved the way for the quantitative and qualitative developments of high-speed broadband access. IEEE 802.16 Standard introduces several advantages, and one of them is the support for Quality of Services (QoS) at the Media Access Control (MAC) level. For these purposes, the standard defines several scheduling classes at MAC layer to treat service flow in a different way, depending on QoS requirements. In this thesis, we have proposed a new QoS framework for Point-to-Multi Point (PMP) 802.16 systems operating in Time Division Duplexing (TDD) mode over a WirelessMAN-OFDM physical layer. The proposed framework consists of a Call Admission Control (CAC) module and a scheduling scheme for the uplink traffic as well as a simple frame allocation scheme. The proposed CAC module interacts with the uplink scheduler status and it makes its decision based on the scheduler queue status; on the other hand, the proposed scheduling scheme for the uplink traffic aims to support realtime flows and adapts the frame-by-frame allocations to the current needs of the connections, with respect to the grants boundaries fixed by the CAC module. Extensive OPNET simulation demonstrates the effectiveness of the proposed architecture

Simulation and performance analysis of the Zone Routing Protocol for tactical mobile AD HOC networks

This thesis presents a simulation and analysis of the Zone Routing Protocol (ZRP) for mobile ad hoc network (MANET) environments using the OPNET simulation tool. ZRP is being suggested for possible implementation in the Joint Tactical Radio System (JTRS) for the United States military. Utilizing a ZRP OPNET model that was developed at Cornell University, the analysis focuses on key performance parameters that include overhead generation, network adaptation, efficiency, and routing zone optimization. The ZRP model's traffic monitoring has been enhanced for this work to identify the engineering tradeoffs between efficiency and performance. The results of this thesis provide valuable insight into the analysis and performance with varying zone routing radius, node velocity, and node density. Critical MANET environmental and simulation parameters required for JTRS implementation into the military battlespace have been studiedhttp://archive.org/details/simulationndperf10945779

Quality-of-service management in IP networks

Quality of Service (QoS) in Internet Protocol (IF) Networks has been the subject of active research over the past two decades. Integrated Services (IntServ) and Differentiated Services (DiffServ) QoS architectures have emerged as proposed standards for resource allocation in IF Networks. These two QoS architectures support the need for multiple traffic queuing systems to allow for resource partitioning for heterogeneous applications making use of the networks. There have been a number of specifications or proposals for the number of traffic queuing classes (Class of Service (CoS)) that will support integrated services in IF Networks, but none has provided verification in the form of analytical or empirical investigation to prove that its specification or proposal will be optimum. Despite the existence of the two standard QoS architectures and the large volume of research work that has been carried out on IF QoS, its deployment still remains elusive in the Internet. This is not unconnected with the complexities associated with some aspects of the standard QoS architectures. [Continues.