أدت كل من التكلفة المنخفضة و سهولة نشر شبكات الحساسات اللاسلكية إلى جعلها خياراً جذاباً للعديد من التطبيقات مثل تطبيقات مراقبة البيئة و التعقب في الزمن الحقيقي و الأمن و غيرها. و لكن في الواقع تتغذى عقد هذه الشبكات من البطاريات و تملك قيودا على الذاكرة , و عرض الحزمة المتاح , و القدرة على المعالجة, مما جعلها توصف بأنها شبكات ذات طبيعة مقيدة للموارد و هذا ما فرض مجموعة من التحديات على تصميم و أداء هذه الشبكات . إن سعة البطارية المحدودة في عقد الحساسات جعل موضوع استهلاك الطاقة بفعالية و كفاءة تحدٍ رئيسي في هذه الشبكات. لذا توجب على بروتوكولات التوجيه أن تستخدم الطاقة بفعالية بهدف إطالة عمر الشبكة .
قمنا في هذه البحث بإجراء محاكاة لمجموعة من بروتوكولات التوجيه الهرمية و هي LEACH,SEP,DEEC,TEEN و تقييم أدائها مقارنة ببروتوكول النقل المباشر DT و ذلك في شبكات WSN المتجانسة و المتباينة باستخدام الماتلاب.
The low cost, ease of deployment has exposed WSNs an attractive choice for numerous applications,like environmental monitoring applications , security applications, real time tracking, and so on.
But in reality, these networks are operated on battery with limitations in their computation capabilities, memory, bandwidth ,so they called networks with resource constrained nature, and this impels various challenges in its design and its performance.
Limited battery capacity of sensor nodes makes energy efficiency a major and challenge problem in wireless sensor networks. Thus, the routing protocols for wireless sensor networks must be energy efficient in order to maximize the network lifetime.
In this paper we simulated LEACH,SEP,DEEC,TEEN routing protocols and evaluated their performance by comparing with DT routing protocol in Homogeneous and Heterogeneous Wireless Sensor Networks on MATLAB.
References used
Akyildiz, I.F.; Su, W.; Sank, Y.; Cayirci, E. Wireless sensor networks: A survey. Computer Network. 2002,38, 393–422
Al-Karaki, J.N.; Kamal, A.E. Routing techniques in wireless sensor networks: A survey. IEEE Wirel. Commun. 2004, 11, 6–28
Heinzelman,W. B.; Chandrakasan A. P.; Balakrishnan H. An applicationspecific protocol architecture for wireless microsensor networks . IEEE Trans on Wireless Communications, Vol. 1, No. 4, 2002, 660-670
In this PAPER, we perform a study and extensive comparative between
the well-known link quality estimators and CTP, a tree-based routing
protocol provided by TinyOS for different network topology and simulate
it using TOSSIM simulator to evaluate
In this research we study some of the most Bio-inspired MAC
protocols widely used in WSNs. we select the protocols which
depends on ant colony optimization behavior (ACO), bee colony
optimization behavior (BCO) and particle swarm optimization.
The location of wireless sensor nodes located in the center is necessary for applications
where information about the site is important information such as security, protection,
object tracking and other applications.
localization algorithms are c
Routing protocols play an essential role in meeting the quality of service
requirements in the network, but achieving these requirements may require frequent send
and receive operations to build and maintain routing tables, which consume sensors
r
Mobile wireless networks consist of a set of cooperative and
mobile nodes, each node can move randomly at a specific speed
in all directions without any control of a central manager. This type
of networks has become a hot research topic due to its