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Register a new userImprovement of the performance of Static Power Saving Algorithm during wireless network congestion
تحسين أداء خوارزمية توفير الطّاقة الستاتيكية أثناءَ ازدحامِ الشبكةِ اللاسلكية
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تبحث هذهِ المقالة في إمكانيةِ إعطاءِ صفةِ التنقليةِ للتعديلاتِ المُنفّذة على الخوارزميةِ الديناميكية، و ذلك عن طريق تطبيؽق تملك التعديلات على الخوارزميةِ الستاتيكية. تَّم استخدام المُحاكي NS-2 من أجل مقارنةِ أداءِ الخوارزمياتِ القياسية مع أدائِها بعدَ إدخال التعديلاتِ على آلياتِ عملها. تُظهر النتائج تفوّقاً للخوارزمياتِ المعدّلة على الخوارزمياتِ القياسية لاسيما مع ازدحاِم الشبكة.
This article examines the possibility of assigning the mobility characteristics of the modifications carried out on the dynamic algorithm to the static algorithm. Furthermore we used NS-2 simulator to evaluate our proposal and to compare it with the performance of the standard algorithms. The results show the superiority of the modified algorithms over the standard algorithms, especially with network congestion.
References used
APTE,V.; POWAR,Y. 2009 Improving the IEEE 802.11 Mac Layer Handoff Latency to Support Multimedia Traffic, IEEE Wireless Communications and Networking Conference (WCNC), 1-6
BHARADWAJ,A. 2014 Managing Wi-Fi Energy In Smartphones by Throttling Network Packets (Master Thesis), Simon Fraser University, Faculty of Applied Sciences, 55
BOTTA,M.; SIMEK,M. 2013 Adaptive Distance Estimation BasedonRSSIin802.15.4Network,Radioengineering,Vol.22,No. 4,1162-1168
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Wireless sensor network simulation programs provide representation for an actual system, without needing to deploy real testbed which is highly constrained by the available budget, and the direct operations inside physical layer in most of these prog
rams are hidden and work implicitly. This is what motivated us to build a kernel for a virtual simulation platform to be able to simulate protocol operations and algorithms at the node processing unit level, The proposed system aims to observe the execution of operations at the low level of the wireless sensor physical infrastructure with the ability to modify at this level. Since secure routing is considered one of the most challenges in WSN field, so we apply in this paper one of the secure routing algorithms inside the GUI of the proposed system to observe execution at the low level of processor operations, which give us the ability to discover the weakness of algorithms and improve them. Three scenarios were applied to evaluate the performance of the proposed simulation platform. The results demonstrate a high flexibility and effectiveness of this platform in tracing the progress of operations performed within the wireless sensor nodes at the Assembly language level.
Nowadays, wireless networks are spreading more and more. The majority of installed networks have become wireless due to the simplicity of installation; where they do not need an infrastructure. This does not mean that the role of the wired networks i
s being eliminated. Instead, the wireless networks
are considered as a complementary of the wired networks. With all types of networks from personal and local area networks (PAN and LAN) to wide area networks (WAN) especially the Internet,
research has become oriented to focus on the quality of service (QoS) and the integration among all these networks taking into account the Internet which is considered as the backbone for each network that wants to exchange the information with any other network all over the world. In our research, we take into account the quality of service in the broadband networks such as the WiMax network (Worldwide Interoperability for Microwave Access) with IEEE 802.16e standard which covers cities and supports the mobility. This network can be used to interconnect the rural zones with the center of cities, this kind is called point-to-point, or it can be used to cover the cities and is called point-tomultipoint,
The last one is used to interconnect different wireless networks especially the local one which has infrastructure (Wi-fi: Wireless Fidelity) and networks which have many users and called
hotspots. However, the cells of Wi Max in the cities are called hotzones.
We propose a system model that performs the load balancing process between the base stations of WiMax network. This means, the proposed load balancing algorithm exchanges the terminals between the adjacent base stations in order to make the throughput in each base station equals to the throughput
in the others. This will improve the performance of the overall network and increase the available bandwidth for each terminal; in addition, this will increase the number of terminals which can be
served. On one side, these advantages return to the subscribers, they also return to the operator on the other side, not to mention the good renown that the operator will get from subscribers that will make more subscribers join to this network.
The proposed load balancing system can be centralized; implemented in a centralized server connected
to all base stations or distributed system implemented in each base station. The load balancing algorithm which consists of several steps is placed in a controller that achieves it. The load balancing process and the handover procedure have to be fast enough in order to prevent the adverse effect on
the quality of service especially for the real-time applications users.
Wireless Sensor Networks (WSNs) are often deployedrandomly;this makes the
positiondetermination of deployed nodes a very difficult issue, which is called localization
problem. The importance of node localization information becomes from the facilit
y of
routing operation and the network control, that makes the network works correctly.
Nowadays, Global Position System (GPS) is appeared as the most important position
system, but it is inapplicable for the low-cost self-configure sensor networks, and also it is
impossible to install GPS for each sensor nodebecause of high cost, large volume and high
complexity required of adding it to nodes, especially for large network.Therefore, a few
number of nodes may be configured with GPS.
In this paper,we will study the localization algorithmAd-hoc Positioning System
(APS) algorithmused inUnderwater WSN, andwill testthe effectiveness of usingitin
determining the node position based on the distance calculated by anchor nodes. These
nodes are the nodes which know their positions.
Wireless Multimedia Sensor Network (WMSN) consists of a large number of small size, low power, limited sources sensor nodes, deployed in tested field, These nodes have the ability of sensing, processing, storing and sending multimedia data from the t
ested field in real time. The security in WMSNs is one of most important issues that should be studied due to the special nature of this network, and of the importance of inquest basic security requirements when sending information in the network. Using cryptography technics are very effective ways to realize basic security requirements in this network. The recently proposed MQQ algorithm is one of public key cryptography (PKC) algorithms, which provides a good performance compared to other PKC algorithms. In this research, we present an analyzing study of MQQ implementation in WMSNs. To achieve our goal, we used real images taken by multimedia wireless sensor nodes. We studied the most important parameters such as the size of generated keys and encrypted images, the execution time and the space occupied in the flash memory of multimedia wireless sensor nodes and complexity degree of this algorithm. Results showed that MQQ has good performance, as well as the execution time of operations is better than RSA algorithm. Results also showed the importance of taking into account a large size of public key of MQQ algorithm when implementation it in WMSNs.
The tracking using wireless sensor networks is one of the applications that are
experiencing significant growth. Due to considerations of wireless sensor networks in
terms of limited energy source, researches continue to improve methods of routing
and
transforming information to ensure lower power. Therefore, we have in this research
improved the routing of target location information within WSN by providing a new
algorithm, which takes advantage of the concept of clustering for wireless network sensors,
with the addition of the possibility of interaction between field sensors that belong to
different clusters, where in other cases, they cannot interact with each other in the
traditional case of cluster networks. to get rid of repeating the same information transfer,
we depend on the parameter intensity of the received signal from the target in the sensors,
which will reflect positively on the network age, and give a more accurate indication of the
target site. We have implemented the proposed algorithm and showed the results of using
the simulator OPNET which is one of the best simulators in the field of various types of
networks.
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