Irfan M. Awan

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The paper presents a new cluster based routing algorithm that exploits the redundancy properties of the sensor networks in order to address the traditional problem of load balancing and energy efficiency in the WSNs.The algorithm makes use of the nodes in a sensor network of which area coverage is covered by the neighbours of the nodes and mark them as(More)
Business and social life have become increasingly dependent on largescale communication and information systems. A partial or complete breakdown as a consequence of natural disasters or purposeful attacks might have severe impacts. Survivability refers to the ability of a system to recover from such disaster circumstances. Evaluating survivability should(More)
This paper analyses a multiple class single server M/M/1/K queue with finite capacity under preemptive service priority discipline. The Poisson process has been used to model the multiple classes of arrival streams. The service times have exponential distribution. Analytical expressions for the flow balanced equations have been derived using Markov chain.(More)
This paper introduces MACH-FTDC (Multihop Alternate Cluster Head Fault Tolerant – Dynamic Clustering) protocol for wireless sensor network that provides fault tolerance as well as reduced data loss with mobility as compared to the existing FT-DSC protocol. It introduces mobility which is important to some of the real world applications. This protocol does(More)
A analytic framework is devised, based on the principle of maximum entropy (ME), for the performance modeling of a wireless 4G cell with bursty multimedia traffic with hand off under an efficient MAC protocol with a buffer threshold-based generalized partial sharing (GPS) traffic handling scheme. In this context, an open queueing network model (QNM) is(More)
IPv4/IPv6 transition rolls out many challenges to the world of internet. IETF proposes various transition techniques including dual IP stack, IP translation and tunnelling transition mechanisms. A detailed study is made on the IPv6 addressing architecture. Out of the three mechanisms Tunnelling proves to be most effective in the study which has been done.(More)
Quality of service (QoS) provision will be one of the most challenging issues in the future heterogeneous wireless networks. It is also anticipated that new services will emerge, mainly for real-time and multimedia applications, which will need high data rates. One of the main aims of the future heterogeneous wireless networks is to allow mobile users to(More)
An energy efficient routing protocol named Hybrid TB-LEACH Energy Based Multihop Protocol is proposed. The proposed protocol selects sensor nodes having higher residual energy as Cluster Heads which communicate with the base station by the means of minimum spanning tree. It has reduced energy consumed by sensor nodes. In this paper, performance of proposed(More)