scholarly journals Higway Criuse Control System for Vehicles using Low Power RF and Can Protocol

The rapid growth and increased communications over internet has also increased the demand for an effective and efficient communication over the network. Therefore an efficient mechanism to deal with the network traffic can reduce the interruptions caused during communication and provide reliable and enhanced quality of service. Routers are responsible for performing the direction of network traffic over the internet Congestion control mechanisms provide a better way of handling network congestion. This paper analyzed the performance of RED with fuzzy logic. The important objective of fuzzy logic is to reduce packet loss during data transmission. The analysis results show that the packet dropping probability could be reduced with the help of FLRED.

Author(s):  
Fani Rakhman Hakim ◽  
Bambang Sugiantoro

The technology of internet nowadays has become most important aspect and becomes primary need for certain group of peoples who work in some field like education,economy,health,etc. One of the biggest problem which mostly brought by so many people is speed in data transfer. This paper emphasize in directly testing the quality of data transmission from each transmission technology. The equipment used by this paper is ZTE Join Air help, the simcard provided by Telkomsel,XL, and indosat, while CDMA technology used simcard provided by smartfren and esia and modem provided by Smartfren which its series is EC176-2. The parameters used for testing in this paper are throughput, time, jitter dan packet loss. this paper used data gathering method, for each operator and the testing used by this paper is downloading some files from local and non local server, then comparing parameter value between operators.


2011 ◽  
Vol 225-226 ◽  
pp. 194-198
Author(s):  
Yan Zhang ◽  
Wen Yu Yu

For the unsymmetrical bandwidth in HFC network, this paper proposes a data transmission scheme of Cable Modem based on DOCSIS1.1. This scheme can meet different kinds of data’s demands. It can guarantee fine grading data transmission management and low ratio of packet loss. Then, this paper proves the validity of the scheme. Lastly, in order to improve the quality of data transmission, it gives the difficulties and research perspective in the future.


2020 ◽  
Vol 11 (1) ◽  
pp. 77-88
Author(s):  
Ida Nurhaida ◽  
Ichsan Ichsan

Penelitian ini dilakukan untuk menguji metode congestion control dengan penerapan QoS-Policies pada jaringan Multi Protocol Label Switching (MPLS). Parameter QoS (Quality of Services) yang diuji dalam penelitian ini berupa delay, troughput, jitter dan packet loss. Nilai-nilai yang didapatkan dari paramater tersebut kemudian dibandingkan dengan standar dari Telecommunications and Internet Protocol Harmonization Over Networks (TIPHON) dengan tujuan untuk mengetahui kualitas layanan pengiriman data pada jaringan MPLS ketika terjadi network congestion di lintasanya. Setelah melakukan proses perancangan, pengujian dan analisa, hasil yang didapat menunjukkan peningkatan nilai-nilai parameter QoS. Nilai QoS untuk parameter delay mengalami penurunan sebesar 48.3%, nilai troughput mengalami peningkatan sebesar 87.44%, nilai jitter mengalami penurunan nilai sebesar 54.04% dan nilai packet loss mengalami penurunan sebesar 99.9%.


2014 ◽  
Vol 513-517 ◽  
pp. 2063-2067
Author(s):  
Lin Guang Lai ◽  
Lei Xu ◽  
Chang Sheng Cao

In the real-time network video surveillance system which uses UDP for data transmission, the packet loss and delay of H.264 video data unit would cause image pause and blur. The paused and blurry image affects the quality of users’ experience. In this paper, we put forward Idr (invalid data rate) to integrate the delay and packet loss rate and chooses code rate as the target of adjustment. We propose an adaptive transmission approach based on QoE Measurement of invalid data rate. Experiment result shows that, this approach can improve the video fluency and clarity as well as user experience.


2018 ◽  
Vol 7 (2.7) ◽  
pp. 99
Author(s):  
Devare Avinash S ◽  
G Krishna Mohan

In the situations of natural disasters, Wireless Sensor Networks (WSN) is extensively used.  Quality of Service (QoS) is an important parameter for ensuring effectiveness and robustness of service provided.  QoS gets degraded when being applied in various applications of WSN.   Qos expected in WSN applications gets reduced further.  In this case, efficient use of the scarce resources is important to ensure continuous    data transmission is ensured by proficient use of resources which are limited resources. There are many WSN protocols which focus on broadcasting of important information. But there are many parameters which get neglected by these protocols. For instance, normal data traffic gets neglected by these protocols.  Hence, this research proposes EnOPATr system which is independent and distributed. The essential and normal data is handled at the same time in EnOPATr which achieves   dependable and congestion free data. In a sensor node, power consumption can be reduced by decreasing the rate of packet retransmission. This is because of congestion in network.  The simulation of the proposed system is done using NS-2 software which shows that the proposed system is able to reduce network congestion thereby improving the performance..


Repositor ◽  
2020 ◽  
Vol 2 (12) ◽  
pp. 1716
Author(s):  
Ahmad Fahri Jamaluddin ◽  
Diah Risqiwati ◽  
Fauzi Dwi Setiawan Sumadi

AbstrakMemelihara burung merupakan salah satu hobi masyarakat Indonesia. Kebutuhan gizi dan nutrisi berupa protein pada burung dapat diperoleh dari suatu makanan salah satu makanan burung kroto atau telur semut rangrang. Pada budidaya semut rangrang, suhu dan kelembaban dapat mempengaruhi semut rangrang dalam bertelur. Masalah yang dihadapi saat ini pada budidaya semut rangrang adalah peternak tidak dapat memperkirakan kondisi suhu dan kelembaban. Mereka hanya memperkirakan suhu dan kelembaban dengan merasakan panas di dalam ruangan. Adapun masalah lain yang dihadapi adalah adanya getaran dan bau kimia di sekitar toples tempat semut rangrang di budidaya yang dapat membuat semut stress dan dapat menurunkan hasil produksi kroto. Dari permasalahan ini dilakukan penelitian dengan membuatan model pengatur suhu, kelembaban, getaran dan bau kimia dapat dimanfaatkan untuk menggunakan mikrokontroler Arduino UNO, sensor DHT11, sensor SW-420 dan sensor MQ-02 pada ruang budidaya semut rangrang dengan menggunakan system pentransmisian MQTT (Message Queuing Telemetry Transport). Alat ini akan mempermudah budidaya untuk mengatur nilai suhu, kelembaban, getaran dan bau kimia di dalam ruang budidaya tersebut. Alat ini menggunakan mist maker sebagai alat penghasil uap dan buzzer sebagai alarm secara otomatis agar budidaya semut rangrang stabil dan menghasilkan produksi kroto yang berkualitas. Hasil penelitian ini menunjukkan bahwa jarak mempengaruhi kuat sinyal dan delay atau selisih waktu transmisi data yang mana pada jarak 5m sampai jarak 7m sinyal semakin melemah dan rata-rata selisih waktu transmisi data betambah sekitar 5.1 sec hingga 5.9 sec. Hasil penelitian ini juga menunjukkan bahwa sistem pentrasmisian MQTT yang menggunakan ESP8266 memiliki rata-rata jumlah packet loss secara keseluruhan sebesar 35%.AbstractCaring of birds is one of society hobbies in Indonesia. Nutritional needs and nutrients in the form of proteins in birds can be obtained from food which is kroto bird food or weaver ant egg. In the weaver ant cultivation, temperature and humidity can affect the weaver ant in laying eggs. The problem of weaver ants cultivation is the farmer cannot predict the conditions of temperature and humidity. They only estimate the temperature and humidity by feeling heat in the room. The other problem faced is the presence of vibration and chemical odors around the jar where the weaver ants process of cultivation can make they stress and reduce the production of kroto. From this problem, research is carried out by making a models of temperature, humidity, vibration and chemical odors can be ultilized by using arduino uno microcontroller, DHT11 sensor, SW-420 sensor and MQ-02 sensor in the space of weaver ants cultivation by using the MQTT (Message Queuing Telemetry Transport) transmission system. This tool will make the cultivation easier to regulate the value of temperature, humidity, vibration and chemical odors in the space of cultivation. This tool uses a mist maker as steam generator and buzzer as an automatic alarm so that the cultivation of the weaver ants is stable and produces quality of kroto production. The results of this study indicate that the distance affects the signal strength and delay or difference in data transmission time which at a distance of 5m to a distance of 7m the signal weakens and the average difference in data transmission time increases around 5.1 sec to 5.9 sec. The results of this study also indicate that the MQTT transmission system that uses ESP8266 has an average number of packet loss overall of 35%. 


Author(s):  
Uduak Umoh ◽  
Daniel Asuquo

This paper proposes a fuzzy logic (FL) model for evaluation of quality of service (QoS) in multimedia transmission over ad hoc networks as an effective mechanism for QoS management. It aims at minimizing the negative effects of major QoS parameters, (jitter, delay, packet loss) sustaining efficiency and reliability of data deliveries and improving overall system performance. Both triangular membership function (TMF) and Gaussian membership function (GMF) are adopted to demonstrate their effects in FL-QoS evaluation. The proposed approaches are implemented in Matlab/Simulink. Results indicate that input conditions have varying level of influences on the output based on the MFs used. It is generally observed that QoS fuzzy control with TMF gives a better performance than GMF. Typically, it is also noted that when the input conditions are selected at 50[Formula: see text]ms delay, 5[Formula: see text]ms jitter and 50% packet loss, we obtain 79% and 71% output responses with TMF and GMF, respectively. This shows that TMF method can control QoS in a multimedia transmission over ad hoc wireless network more effectively with good service output response than GMF. Generally, the paper shows that FL is capable of measuring network performance and predicting any QoS deterioration without complex mathematical calculation, to provide an improved QoS for customers’ satisfaction.


2014 ◽  
Vol 2014 ◽  
pp. 1-13 ◽  
Author(s):  
Heyu Liu ◽  
Fuchun Sun

The sharply increasing amount of data, which are transferred by the satellite network, requires the satellite network to provide quality-of-service (QoS). However, the upsurge in the data flow leads to the network congestion, impeding its ability to offer QoS. Congestion control mechanisms, deployed in the ground networks, have been thoroughly studied. But those deployed in the satellite networks have not been studied yet. As satellite networks are now important supplements to the ground backbone networks, this paper carefully analyzes the current challenges of developing the QoS-oriented congestion control mechanism for satellite networks. On this basis, a consequent mechanism QMCC (QoS-oriented mechanism of congestion control for satellite networks) is described in detail. Under that QMCC, the source nodes utilize an equation to compute the sending rate for each data flow; meanwhile, the intermediate nodes keep detecting real-time package-loss rates for timely adjustments. Simulation results indicate QMCC can provide superior congestion control performance, and raise network throughputs without reducing the QoS effects.


Author(s):  
Aarti Sahu ◽  
Laxmi Shrivastava

A wireless ad hoc network is a decentralized kind of wireless network. It is a kind of temporary Computer-to-Computer connection. It is a spontaneous network which includes mobile ad-hoc network (MANET), vehicular ad-hoc network (VANET) and Flying ad-hoc network (FANET). Mobile Ad Hoc Network (MANET) is a temporary network that can be dynamically formed to exchange information by wireless nodes or routers which may be mobile. A VANET is a sub form of MANET. It is an technology that uses vehicles as nodes in a network to make a mobile network. FANET is an ad-hoc network of flying nodes. They can fly independently or can be operated distantly. In this research paper Fuzzy based control approaches in wireless network detects & avoids congestion by developing the ad-hoc fuzzy rules as well as membership functions.In this concept, two parameters have been used as: a) Channel load b) The size of queue within intermediate nodes. These parameters constitute the input to Fuzzy logic controller. The output of Fuzzy logic control (sending rate) derives from the conjunction with Fuzzy Rules Base. The parameter used input channel load, queue length which are produce the sending rate output in fuzzy logic. This fuzzy value has been used to compare the MANET, FANET and VANET in terms of the parameters Throughput, packet loss ratio, end to end delay. The simulation results reveal that usage of Qual Net 6.1 simulator has reduced packet-loss in MANET with comparing of VANET and FANET.


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