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Computer Engineering

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Rana Asif Rehman

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Energy Aware Forwarding In Content Centric Based Multihop Wireless Ad Hoc Networks, Rana Asif Rehman, Byung-Seo Kim Dec 2015

Energy Aware Forwarding In Content Centric Based Multihop Wireless Ad Hoc Networks, Rana Asif Rehman, Byung-Seo Kim

Rana Asif Rehman

Content centric networking (CCN) is a newly proposed futuristic Internet paradigm in which communication depends on the decoupling of content names from their locations. In CCN-based multihop wireless ad hoc networks, the participating nodes show dynamic topology, intermittent connectivity, channels fluctuation, and severe constraints such as limited battery power. In the case of traffic congestion, the affected nodes die early owing to the shortage of battery power. Consequently, all pending request entries are also destroyed, which further degrades the network performance as well as the node working lifetime. In this study, we have proposed a novel energy aware transmission scheme …


Ndn-Crahns: Named Data Networking For Cognitive Radio Ad Hoc Networks, Rana Asif Rehman, Jong Kim, Byung-Seo Kim Jun 2015

Ndn-Crahns: Named Data Networking For Cognitive Radio Ad Hoc Networks, Rana Asif Rehman, Jong Kim, Byung-Seo Kim

Rana Asif Rehman

Named data networking (NDN) is a newly proposed paradigm for future Internet, in which communication among nodes is based on data names, decoupling from their locations. In dynamic and self-organized cognitive radio ad hoc networks (CRAHNs), it is difficult to maintain end-to-end connectivity between ad hoc nodes especially in the presence of licensed users and intermittent wireless channels. Moreover, IP-based CRAHNs have several issues like scalability, inefficient-mapping, poor resource utilization, and location dependence. By leveraging the advantages of NDN, in this paper, we propose a new cross layer fine-grained architecture called named data networking for cognitive radio ad hoc networks …


Enhanced Routing Protocol For Multihop Cognitive Radio Wireless Networks, Rana Asif Rehman, Chan-Min Park, Byung-Seo Kim Jan 2015

Enhanced Routing Protocol For Multihop Cognitive Radio Wireless Networks, Rana Asif Rehman, Chan-Min Park, Byung-Seo Kim

Rana Asif Rehman

Since multihop cognitive radio wireless networks are resource-constraint networks, there is a need of routing scheme that takes into account the parameters like channel information, node’s remaining energies, end-to-end latency etc., while performing routing process. In this paper, we have proposed a reliable and efficient routing scheme for multihop cognitive radio wireless networks. The proposed protocol is on-demand and reactive protocol that considers both delay and energy along the route. By using simulations, it shows that proposed scheme performs better as compared to other ones.


L2er: Low-Latency And Energy-Based Routing Protocol For Cognitive Radio Ad Hoc Networks, Rana Asif Rehman, Byung-Seo Kim Sep 2014

L2er: Low-Latency And Energy-Based Routing Protocol For Cognitive Radio Ad Hoc Networks, Rana Asif Rehman, Byung-Seo Kim

Rana Asif Rehman

Cognitive radio ad hoc networks (CRAHNs) are active, self-organized, and dynamic networks, in which cognitive users can communicate with each other in an ad hoc fashion. Various delay and energy-based routing protocols have been proposed for CRAHNs. However, these protocols do not consider the delay and node energy in the routing process, which can significantly affect performance. Delay and node energy are important factors in ad hoc networks in which devices have limited power. In this paper, we propose a new routing protocol, named low-latency and energy-based routing (L2ER) protocol; it considers both delay and energy for the routing decisions …


Efficient Delay And Energy Based Routing In Cognitive Radio Ad Hoc Networks, Rana Asif Rehman, Muhammad Sher, Muhammad Khalil Afzal Oct 2012

Efficient Delay And Energy Based Routing In Cognitive Radio Ad Hoc Networks, Rana Asif Rehman, Muhammad Sher, Muhammad Khalil Afzal

Rana Asif Rehman

Cognitive radio ad hoc networks (CRAHNs) are multi-hop, dynamic and self-configurable networks, which can communicate without any infrastructure support. Most of the research in CRAHNs has been already carried out on physical and media access control layers, but without effective routing protocols we cannot take full advantage of CRAHNs. In this paper, we discuss the problems in already proposed routing protocols for cognitive radio networks and proposed a novel protocol: Delay and Energy based Spectrum Aware Routing Protocol (DESAR), which consider both delay and energy for the computation of efficient path between source and destination. Simulation results show that DESAR …