تلعب بروتوكولات التحويل دورا أساسيا في تلبية متطلبات جودة الخدمة في الشبكة، إلا أن تحقيق هذا الأمر قد يتطلب عمليات إرسال و استقبال متكررة و بناء جداول تحويل تستهلك مصادر الحساسات إذا أخذنا بالاعتبار محدودية شبكات الحساسات اللاسلكية من حيث الطاقة المتوفرة و كمية التخزين.
تم في هذا البحث مقارنة أداء بروتوكول التحويل AODV و بروتوكول التحويل الهرمي HR من ناحية معدل إيصال و خسارة الحزم، و زمن التأخير و التأرجح، و كمية الطاقة المصروفة في شبكة حساسات لاسلكية تعمل وفق المعيار 802.15.4 في الحالة التي تخرج فيها قسم من الحساسات عن العمل لفترات محددة.
بينت النتائج أن بروتوكولات التحويل الهرمية تحقق أداء أفضل من حيث زمن التأخير و معدل النقل و كمية الطاقة المستهلكة من بروتوكول التحويل AODV، لكنها تعاني من فقد أكبر للحزم نتيجة انقطاع مسار التحويل الناتج عن تعطل الحساسات.
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
resource If we take into consideration the limitations of wireless sensor networks in terms
of the amount of available energy and storage capacity.
In this research a performance comparison of the on-demand Distance Vector
Routing protocol AODV and Hierarchical Routing protocolHR was carried out in terms of
the packet delivery and loose rate, delay and jitter, and the amount of expended energy in
the Wireless sensor network operates according to IEEE802.15.4 standard in cases where
some of sensors get out of work for limited periods of time.
The results showed that the hierarchical routing protocols perform better in terms of
delay time and transfer rate and the amount of consumed energy than on-demand Distance
Vector Routing protocol routing protocol, but suffer larger packet loss due to routing path
corruption as a result of sensors crashes.
References used
ANAND, V., & GUPTA, S. C. Performance of AODV, DSR and DSDV Protocols under varying node movement. In Information and Communication Technologies (WICT), 2012 World Congress on (pp. 50-55). IEEE
BORADE, D. R., & LAEEQ, S. M.Performance and evaluation of IEEE 802.15. 4 under different topologies with ad-hoc on demand distance vector protocol. In Electrical, Electronics and Computer Science (SCEECS), 2012 IEEE Students' Conference on (pp. 1- 4). IEEE
RAMASSAMY, C., FOUCHAL, H., & HUNEL, P.Impact of transmission range in 802.15. 4 with usual routing protocols. In 2012 8th International Wireless Communications and Mobile Computing Conference (IWCMC) (pp. 728-733). IEEE
The reducing of energy consumption for various nodes in wireless sensor networks
plays an important and essential role in the prolonging of the life of these networks. In
order not to be the energy consumption in some node is very high and in other
Many wireless sensor network applications like forest fire detection and environment
monitoring recommend making benefit from moving humans, vehicles, or animals to
enhance network performance. In this research, we had improved our previous protoco
Many wireless sensor network applications like forest fire detection and environment monitoring recommend making benefit from moving humans, vehicles, or animals to enhance network performance. In this research, we had improved our previous protocol
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 batte
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