Morteza Mohammadi Zanjireh | Glasgow Caledonian University (original) (raw)

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Papers by Morteza Mohammadi Zanjireh

In wireless networks, using traditional unicast routing algorithm is inappropriate due to broadca... more In wireless networks, using traditional unicast routing algorithm is inappropriate due to broadcast nature and spatial diversity of wireless links. Selecting a set of N nodes as next hop in wireless networks instead of one node, increases delivery probability relative to N.

Wireless sensor networks have a wide range of applications because they can be adapted for variou... more Wireless sensor networks have a wide range
of applications because they can be adapted for various
environments. They can operate independently in harsh places
where a human presence is risky or even impossible. Since
their life time is dependent on their batteries and replacing or
recharging their batteries is impossible in rough places, it is
necessary to find energy efficient routing protocols for them.
In this paper, a number of well-know energy efficient routing
algorithms for WSNs have been classified and presented based
on their attributes.

The adaptable and distributed nature of wireless sensor networks has made them popular in a broad... more The adaptable and distributed nature of wireless sensor networks has made them popular in a broad range of applications. Clustering is a widely accepted approach for organising nodes in sensor networks to address the network congestion and energy efficiency concerns. In clustering, the number and uniform distribution of the cluster heads are crucial for the effectiveness of an algorithm. In this paper, we propose a new clustering algorithm for wireless sensor networks that reduces the networks energy consumption and significantly prolongs its lifetime. This is achieved by optimising the distribution of cluster heads across the network. The results of our extensive simulation study show considerable reduction in network energy consumption and therefore prolonging network lifetime.

In a Wireless Sensor Network (WSN) environment, there are many application cases that make use of... more In a Wireless Sensor Network (WSN) environment, there are many application cases that make use of unequally importance of the nature of distributed sensors. This paper proposes a clustering algorithm for these kinds of environments: prioritising the prolonging of active sensors by way of monitoring the important regions in a network environment. The results of our extensive study for this type of environment shows a considerable increase in the number of sensed events on average by 104.28%, 73.14%, and 50.97%, compared with those of Low Energy Adaptive Clustering Hierarchy (LEACH), Hybrid Energy-Efficient Distributed (HEED), and Avoid Near Cluster Head (ANCH) algorithms, respectively.

Wireless Sensor Networks (WSNs) have had remarkable advances in the past couple of decades due t... more Wireless Sensor Networks (WSNs) have had remarkable
advances in the past couple of decades due to their fast
growth and flexibility. In order to supervise an area, hundreds
or thousands of sensors can be established and collaborate with
each other in the environment. The sensors’ sensed and collected
data can be delivered to the base station. Energy optimisation
is crucial in WSN’s efficiency. Organising sensor nodes into
small clusters helps save their initial energy and thus increases
their lifetime. Also, the number and distribution of Cluster
Heads (CHs) are fundamental for energy saving and flexibility of
clustering methods. Avoid Near Cluster Heads (ANCH) is one of
the most recent energy-efficient clustering algorithms proposed
for WSNs in order to extend their lifetime by uniform distributing
of CHs through the network area. In this manuscript, we suggest
an analytical approach to model the energy consumption of the
ANCH algorithm. The results of our comprehensive research
show a 95.4% to 98.6% accuracy in energy consumption estimation
using the proposed analytical model under different practical
situations. The suggested analytical model gives a number of
indications concerning the impact of different factors on the
energy depletion pattern of the ANCH clustering algorithm.

In a Wireless Sensor Network (WSN), the importance of individual sensors might not be equal. That... more In a Wireless Sensor Network (WSN), the importance
of individual sensors might not be equal. That is,
some nodes might be more important than others due to their proximity to critical regions. A-ANCH is one of the new clustering
algorithms for these scenarios which extends the lifetimes of
active sensors by sacrificing in-active ones. In this paper, an
analytical model for the A-ANCH algorithm is presented in
order to predict the number of sensed events (packets) in
the network. Our extensive experiments illustrated on average
91.08% accuracy for the proposed mathematical model compared
with the results of a simulation study. The analytical model
presented here has also revealed that the number of sensed events
in the A-ANCH algorithm is sensitive to the number of sensors
and the network dimensions. On the other hand, it is almost
insensitive to the number of clusters.

Wireless sensor networks are a popular choice in a vast number of applications, despite their ene... more Wireless sensor networks are a popular choice in a vast number of applications, despite their energy constraints, due to their distributed nature, low cost infrastructure deployment and administration. One of the main approaches for addressing the energy consumption and network congestion issues is to organise the sensors in clusters. The number of clusters and also distribution of Cluster Heads are essential for energy efficiency and adaptability of clustering approaches. ANCH is a new energy-efficient clustering algorithm proposed recently for wireless sensor networks to prolong network lifetime by uniformly distributing of Cluster Heads across the network. In this paper, we propose an analytical method to model the energy consumption of the ANCH algorithm. The results of our extensive simulation study show a reasonable accuracy of the proposed analytical model to predict the energy consumption under different operational conditions. The proposed analytical model reveals a number of implications regarding the effects of different parameters on the energy consumption pattern of the ANCH clustering algorithm.

Advances in Information and communication technology causes many changes in societies and human b... more Advances in Information and communication technology causes many changes in societies and human being life. One of these changes is formation of virtual enterprises concept in electronic markets. A virtual enterprise is a temporary alliance of autonomous and possibly geographically distributed organizations that pool their resources to meet short-term goals and exploit fast changing market trends. The important topic in a virtual enterprise life cycle is maintaining its security. Because if a virtual enterprise do not maintain its security, its lifeblood data and information will be accessed and used by other competitors and this means that virtual enterprise will defeat in electronic market. In this paper, we describe some security problems in virtual enterprise architecture. Also for each problem, we propose solutions for eliminating that security problem.