scholarly journals Faulty Sensor Node Detection Using Round Trip Time and Discrete Paths in WSNs

2013 ◽  
Vol 2013 ◽  
pp. 1-12 ◽  
Author(s):  
R. N. Duche ◽  
N. P. Sarwade
Keyword(s):  
Quality Of Service ◽  
Sensor Node ◽  
Sensor Nodes ◽  
Round Trip ◽  
Trip Time ◽  
Accurate Design ◽  
Large Numbers ◽  
Portable Sensor ◽  
Round Trip Delay

Wireless sensor networks (WSNs) with efficient and accurate design to increase the quality of service (QoS) have become a hot area of research. Implementing the efficient and accurate WSNs requires deployment of the large numbers of portable sensor nodes in the field. The quality of service of such networks is affected by lifetime and failure of sensor node. In order to improve the quality of service, the data from faulty sensor nodes has to be ignored or discarded in the decision-making process. Hence, detection of faulty sensor node is of prime importance. In the proposed method, discrete round trip paths (RTPs) are compared on the basis of round trip delay (RTD) time to detect the faulty sensor node. RTD protocol is implemented in NS2 software. WSNs with circular topology are simulated to determine the RTD time of discrete RTPs. Scalability of the proposed method is verified by simulating the WSNs with various sensor nodes.

scholarly journals PEMODELAN DAN SIMULASI JARINGAN BACKBONE METRO ETHERNET KOTA SEMARANG TAHUN 2028 MENGGUNAKAN SIMULATOR RIVERBED MODELER 17.5

TRANSIENT ◽  
2019 ◽  
Vol 7 (4) ◽  
pp. 971
Author(s):  
Danur Ilham Khoiruman ◽  
Sukiswo Sukiswo ◽  
Ajub Ajulian Zahra
Keyword(s):  
Quality Of Service ◽  
Packet Loss ◽  
Loss Ratio ◽  
Round Trip ◽  
Packet Loss Ratio ◽  
Riverbed Modeler ◽  
Round Trip Delay

Metro Ethernet merupakan salah satu teknologi untuk memberikan solusi terintegrasi untuk layanan suara, data dan video dalam cakupan yang luas (perkotaan). Teknologi ini memiliki kecepatan transmisi data sebesar 10 Mbps - 100 Gbps. Suatu jaringan harus memiliki kualitas layanan dan kapasitas yang memadai baik dari segi kapasitas link, router dan performansi QoS (Quality of Service). Pada penelitian ini, dirancang jaringan metro ethernet dengan kapasitas sesuai kebutuhan masyarakat kota Semarang tahun 2028 dengan kualias layanan yang sesuai dengan standar PT. Telkom dan ITU-T. Pemodelan dan pembuatan simulasi rancangan jaringan menggunakan perangkat lunak Riverbed Modeler 17.5. Perbandingan protocol routing RIP dan OSPF dengan parameter waktu konvergensi dilakukan sebelum analisis QoS, dengan tujuan mendapatkan rekomendasi protocol routing yang terbaik. Analisis parameter QoS yang diukur meliputi round trip delay (RTD), jitter, packet loss, utilisasi dan volume trafik. Hasil perbandingan protocol routing menunjukkan bahwa protocol routing OSPF memiliki waktu konvergensi lebih cepat 2 kali lipat dari protokol RIP. Hasil analisis QoS menyatakan bahwa QoS semua link telah sesuai dengan standar yang ada, nilai terbesar untuk RTD adalah 1,265 ms, untuk jitter adalah 0,7331 ms, untuk packet loss ratio adalah 0,00019214 %, untuk utilisasi tertinggi yaitu 58,4%, dan volume trafik terbesar adalah 91.636 Mbps.

scholarly journals SIMULASI DAN ANALISIS JARINGAN METRO ETHERNET KOTA BANDUNG TAHUN 2028 MENGGUNAKAN OPNET MODELER

TRANSIENT ◽  
2019 ◽  
Vol 7 (4) ◽  
pp. 1025
Author(s):  
Arif Nur Hidayat ◽  
Sukiswo Sukiswo ◽  
Ajub Ajulian Zahra
Keyword(s):  
Quality Of Service ◽  
Packet Loss ◽  
Dynamic Routing ◽  
Round Trip ◽  
Round Trip Delay

Sebagai salah satu kota metropolitan, jumlah pengguna perangkat telekomunikasi kota Bandung dipastikan besar. Seiring bertambahnya jumlah penduduk, maka trafik data yang dibangkitkan juga bertambah. Sehingga, diperlukan jaringan yang mampu melayaninya. Metro ethernet merupakan salah satu jaringan yang cukup memadai untuk melayani trafik data telekomunikasi saat ini. Penelitian ini merancang pemodelan dan analisis jaringan metro ethernet. Pemodelan jaringan metro ethernet menggunakan perangkat lunak OPNET Modeler. Analisis performansi jaringan dilakukan dengan cara mengukur metriks QoS (Quality of Service) berdasarkan standar PT. Telekomunikasi Indonesia, Tbk dan ITU-T. Metriks performansi jaringan yang digunakan antara lain round trip delay (RTD), jitter, packet loss, dan utilisasi link. Hasil pengukuran menunjukkan bahwa nilai rata-rata RTD jaringan sebesar 0,3542 ms, rata-rata nilai jitter jaringan sebesar 0,2159 ms, dan rata-rata packet loss jaringan sebesar 0,000585%. Nilai utilisasi link tertinggi terdapat pada link LBG ↔ RJW sebesar 52,9631%. Sedangkan, nilai utilisasi link terendah terdapat pada link UBR ↔ CJA sebesar 29,7614%. Skema dynamic routing menggunakan protokol OSPF diterapkan pada jaringan. Rata-rata waktu konvergensi jaringan dari variasi tiga skenario sebesar 15 s.

scholarly journals Improving the Quality of Service and Privacy by Integrating Dijkstra‟s, SafeQ and Extended Watchdog Algorithm in Wireless Sensor Networks

2019 ◽  
Vol 9 (1) ◽  
pp. 5409-5414
Keyword(s):  
Wireless Sensor Networks ◽  
Quality Of Service ◽  
Sensor Networks ◽  
Shortest Path ◽  
Clustering Algorithm ◽  
Sensor Nodes ◽  
Wireless Sensor ◽  
Destination Node ◽  
Hop Count

The fundamental issue is framing the sensor nodes and steering the information from sender node to receiver node in wireless sensor networks (WSN). To resolve this major difficulty, clustering algorithm is one of the accessible methods employed in wireless sensor networks. Still, clustering concept also faces some hurdles while transmitting the data from source to destination node. The sensor node is used to sense the data and the source node helps to convey the information and the intended recipient receives the sensed information. The clustering proposal will choose the cluster head depending on the residual energy and the sensor utility to its cluster members. The cluster heads will have equal cluster number of nodes. The complexity is generated in computing the shortest path and this can be optimized by Dijkstra’s algorithm. The optimization is executed by Dijkstra’s shortest path algorithm that eliminates the delay in packet delivery, energy consumption, lifetime of the packet and hop count while handling the difficulties. The shortest path calculation will improve the quality of service (QoS). QoS is the crucial problem due to loss of energy and resource computation as well as the privacy in wireless sensor networks. The security can be improvised in this projected work. The preventive metrics are discussed to upgrade the QoS facility by civilizing the privacy parameter called as Safe and Efficient Query Processing (SAFEQ) and integrating the extended watchdog algorithm in wireless sensor networks.

Performance Evaluation of Quality of Service in IEEE 802.15.4-Based Wireless Sensor Networks

2017 ◽  
pp. 213-248 ◽  
Author(s):  
Sanatan Mohanty ◽  
Sarat Kumar Patra
Keyword(s):  
Quality Of Service ◽  
Performance Evaluation ◽  
Ieee 802.15.4 ◽  
Resource Constraints ◽  
Sensor Nodes ◽  
Wireless Sensor ◽  
Delivery Ratio ◽  
Mesh Topology ◽  
Autonomous Sensor

Wireless Sensor Network (WSN) consists of many tiny, autonomous sensor nodes capable of sensing, computation and communication. The main objective of IEEE 802.15.4 based WSN standard is to provide low cost, low power and short range communication. Providing QoS in WSN is a challenging task due to its severe resource constraints in terms of energy, network bandwidth, memory, and CPU. In this chapter, Quality of Service (QoS) performance evaluation has been carried out for IEEE 802.15.4 networks based WSN star and mesh topology using routing protocols like AODV, DSR and DYMO in QualNet 4.5 simulator. Performance evaluations metrics like Packet Delivery Ratio (PDR), throughput, average end to end delay, energy per goodput bit, network lifetime of battery model and total energy consumption which includes transmission, reception, idle and sleep mode were considered for both the topology. From the simulation studies and analysis, it can be seen that on an average DSR and DYMO performs better than AODV for different traffic load rates.

At Sensor Diagnosis for Smart Healthcare

2018 ◽  
Vol 10 (4) ◽  
pp. 1-13
Author(s):  
Chetna Laroiya ◽  
Vijay Bhushan Aggarwal
Keyword(s):  
Joint Probability ◽  
Sliding Window ◽  
Communication Technologies ◽  
Data Streaming ◽  
Round Trip ◽  
Time Data ◽  
Smart Healthcare ◽  
Body Sensors ◽  
Round Trip Delay

In order to implement IoT-based health-care for improved quality of life, we have to deal with sensor and communication technologies. In this article, the authors propose an approach to analyse real-time data streaming from a patient's surface body sensors, which are to be looked upon in a small sliding window frame. Time series analysis of data from the sensors is effective in reducing the round-trip delay between patient and the medical server. Two algorithms are for the sensor, and odd measures are proposed based on joint probability and joint conditional probability. The proposed algorithms are to be SQL compliant, as traces of at-sensor UDBMS alongside elementary capabilities supports databases with a meagre amount of SQL, which is evident in the literature.

scholarly journals The Smaller the Better: Designing Solar Energy Harvesting Sensor Nodes for Long-Range Monitoring

2019 ◽  
Vol 2019 ◽  
pp. 1-11 ◽  
Author(s):  
Malo Mabon ◽  
Matthieu Gautier ◽  
Baptiste Vrigneau ◽  
Mickaël Le Gentil ◽  
Olivier Berder
Keyword(s):  
Quality Of Service ◽  
Form Factor ◽  
Field Experiments ◽  
Wireless Systems ◽  
Sensor Nodes ◽  
Real Field ◽  
Wide Area Networks ◽  
Solar Energy Harvesting ◽  
Monitoring Applications

Emerging Low Power Wide Area Networks (LPWAN) represent a real breakthrough for monitoring applications, since they give the possibility to generate and transmit data over dozens of kilometers while consuming few energy. To further increase the autonomy of such wireless systems, the present paper proposes an original methodology to correctly dimension the key elements of an energy autonomous node, namely, the supercapacitor and the battery that mainly give the form factor of the node. Among the LPWAN candidates, LoRa is chosen for real field experiments with a custom wireless platform that proves its energy neutrality over a finite horizon. Different LoRa configurations are explored, leading to adequate dimensioning. As an example, it is shown that, for the same quality of service, the size of the solar panel needed to keep a LoRa node autonomous in the South of France is less than half of the size required in North of France.

scholarly journals Enhanced Quality of Service Strategy for Improving Network Coverage in IOT Applications

2021 ◽  
Vol 23 (05) ◽  
pp. 694-707
Author(s):  
Dr. D. I. George Amalarethinam ◽  
◽  
Ms. P. Mercy ◽  
Keyword(s):  
Quality Of Service ◽  
Large Scale ◽  
Routing Algorithm ◽  
Cluster Head ◽  
Threshold Value ◽  
Maximum Energy ◽  
Sensor Nodes ◽  
Network Coverage ◽  
Fuzzy C Means Clustering

The Internet of Things (IoT) is a network that includes physical things capable of aggregating and communicating electronic information. With the advancement in wireless sensor networks, IoT provides highly efficient communication for various real-time applications. IoT networks are large-scale networks where routing can be improved by focusing on the Quality of Service (QoS) Parameter. Network coverage can be enhanced by hierarchical clustering of the nodes which increases the network lifetime. The proposed algorithm Enhanced Fuzzy Based Clustering and Routing Algorithm (EFCRA) performs distance and energy-based cluster head selection to find a new path from source to destination. The algorithm uses Fuzzy c-means clustering to provide optimization in forming cluster centers. The cluster head (CH) is identified based on the minimum distance and maximum energy of the sensor node. The cluster head is updated when its energy is lesser than the threshold value. The distance between sensor nodes and its CH node and then to the destination is computed using Dijkstra’s algorithm. The proposed routing strategy provides improved network coverage and throughput which extends the lifetime of the IoT network.

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