Tag Archive: 'ieee opnet project'

Implementation and performance comparison of two similar Zig-Bee 802.15.4 WPANs in Mobile Subnet and satellite subnet using OPNET Modeler

The latter half of the twenty first century in India will witness the nascent technological advancements and the same will offer a highly complex and competitive environment. Service providers will be experimenting new options for ensuring seamless services in minimum time with the motif of spearheading competitiveness. Wireless technology revolutionized technical environment by offering many […]

Performance Evaluation of Zig-Bee 802.15.4 WPAN Designed in Satellite Subnet Using Opnet Modeler

In this advanced generation of science and technologies, nothing seems to be impossible. The new emerging technologies have made every dream possible. This paper deals with Zig-Bee wireless technique. The Zig-Bee wireless personal area networks (WPANs) are ad-hoc low power networks that are basically applicable in short range distance in low cost. These networks are […]

Performance Evaluation of IEEE 802.15.4k Priority Channel Access with DSSS PHY

Low-energy critical infrastructure monitoring (LECIM) applications are rapidly increasing. A communication protocol developed to fulfill the LECIM requirements is the novel IEEE 802.15.4k standard. In this paper, we study the impact of priority channel access (PCA), a feature defined for high priority message transmissions in the IEEE 802.15.4k standard, in LECIM DSSS physical layer (PHY). […]

Proportional Sharing in Distributed Dynamic Spectrum Access-Based Networks

Dynamic spectrum access (DSA) is a promising technology to alleviate the exhaustion of spectral resources. To realize DSA, new technologies that enable fast discovery of the unused spectrum along with efficient spectrum management must be developed. In this paper, we propose a novel scanning algorithm and access etiquette to provide secondary devices differentiated spectrum access […]

Video Quality Transmission Evaluation over Next Generation Wireless Networks

Future-generation wireless networks are increasingly ubiquitous, which allows countless numbers of netizens to create, share and access live video sequences with several content forms and textures. As a result, there emerges a dire need for mechanisms to assess the quality of video transmission. Today’s Mobile Networks are capable of solving many communication problems. However, it […]

Analytical model of multihop IEEE 802.15.4 for lossy medium

Wireless sensor networks (WSN) are used in many fields such as industrial control, building automation, environmental monitoring, etc. IEEE 802.15.4 standard defines the features of MAC layer and physical layer for WSN. Many analytical models studied the performance of the multihop IEEE 802.15.4 networks under the assumption of ideal wireless channel, and they did not […]

Quality of service evaluation of VoIP over wireless networks

The Voice over IP (VoIP) service demands high priority over other services and applications. Some constrains are associated with this real-time service, such as delay and throughput which need to be addressed before delivering to the customer. The mobility in IP networks is a demand that facilitates IP applications and services, especially in wireless networks. […]

Evaluation of cognitive radio for mission-critical and time-critical WSAN in industrial environments under interference

The evaluation of Cognitive Radio (CR) for Wireless Sensor and Actuator Networks (WSANs) in industrial wireless automation applications is presented in this contribution. Current wireless solutions do not ensure enough performance for hard real-time and reliability requirements, based on time-critical data traffic. These industrial applications are characterized by harsh environments, where the robustness of wireless […]

Assessing the impact of resource attack in Software Defined Network

Software Defined Network (SDN) empowers network operators with more flexibility to program their networks. In SDN, dummy switches on the data plane dynamically forward packets based on the rules which are managed by a centralized controller. To apply the rules, switches need to write the rules in its flow table. However, because the size of the flow table […]

On the deployment of information-centric network: Programmability and virtualization

In recent years, information-centric network (ICN) has attracted significant attention from both academia and industry. ICN is characterized by name-based routing, in-network caching and many other advanced network layer techniques. To get the benefit from these new network layer techniques, the network requires severe changes. However, considering the difficulty of deploying a new service on […]

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