scholarly journals ANALYSIS OF THE USE OF TECHNOLOGY SYNCHRONOUS DIGITAL HIERARCHY SDH

2019 ◽  
Author(s):  
Л.К. Хаджиева ◽  
М.Л. Сатуева
Keyword(s):  
Quality Of Service ◽  
Network Performance ◽  
High Accuracy ◽  
Modern Technology ◽  
Synchronous Digital Hierarchy ◽  
Use Of Technology ◽  
Network Topologies ◽  
Design Analyses ◽  
Better Than

Ввиду быстрого прогресса в современных технологиях и огромной потребности в увеличении пропускной способности для использования современных средств требуется более сложная топология сети для обеспечения лучшего качества обслуживания (QoS). Эти требования, в свою очередь, предполагают высокую точность проектирования и совершенство метода синхронизации. Целью данного исследования является решение способа преодоления вышеуказанной проблемы путем реализации сети синхронной цифровой иерархии (SDH) для обеспечения и измерения QoS. Для каждого поставщика услуг это непростая задача удовлетворить спрос клиента. Сеть SDH развивалась, поскольку сеть PDH не поддерживает такие функции, как мультиплексирование более высокого порядка, обеспечивая лучшее качество обслуживания (QoS), топологии сети, отличные от линейных, и сложность с добавлением мультиплексирования с отбрасыванием и т.д. SDH может поддерживать QoS лучше, чем PDH. Конфигурация SDH выполняется для реализации, а проблемы проектирования анализируются для будущего решения. Измерение QoS выполняется для измерения производительности сети. Due to rapid advances in modern technology and the huge need for increased bandwidth, the use of modern facilities requires a more complex network topology to provide better quality of service (QoS). These requirements, in turn, imply high accuracy of design and perfection of synchronization methods. The aim of this study is to solve a way to overcome the above problem by implementing a synchronous digital hierarchy (SDH) network to provide and measure QoS. For each service provider, it is not an easy task to meet customer demand. The SDH network has evolved because the PDH network does not support features such as higher order multiplexing, providing better quality of service (QoS), network topologies other than linear, and complexity with the addition of drop multiplexing, etc. SDH can support QoS better than PDH. The configuration is performed for the SDH implementation as problems of design analyses for future decisions. The QoS measurement is performed to measure network performance.

Demand of Wireless Network and Security in Current Research

2015 ◽  
Vol 14 (6) ◽  
pp. 5809-5813
Author(s):  
Abhishek Prabhakar ◽  
Amod Tiwari ◽  
Vinay Kumar Pathak
Keyword(s):  
Wireless Networks ◽  
Quality Of Service ◽  
Wireless Network ◽  
Network Performance ◽  
Wireless Security ◽  
Human Intervention ◽  
Unauthorized Access ◽  
Quality Of Service Parameters ◽  
Wireless Infrastructure

Wireless security is the prevention of unauthorized access to computers using wireless networks .The trends in wireless networks over the last few years is same as growth of internet. Wireless networks have reduced the human intervention for accessing data at various sites .It is achieved by replacing wired infrastructure with wireless infrastructure. Some of the key challenges in wireless networks are Signal weakening, movement, increase data rate, minimizing size and cost, security of user and QoS (Quality of service) parameters... The goal of this paper is to minimize challenges that are in way of our understanding of wireless network and wireless network performance.

Quality of Service through the Strategic Use of Technology

1996 ◽  
Vol 2 (1) ◽  
pp. 101-110
Author(s):  
Wayne Myles
Keyword(s):  
Quality Of Service ◽  
World Wide Web ◽  
World Wide ◽  
Information Sources ◽  
Communication Patterns ◽  
Home Pages ◽  
Use Of Technology ◽  
E Mail

We live under the spectre of never quite getting beyond the last upgrade in our array of new electronic tools. We have become unwittingly tied to an ever-increasing set of demands to learn, relearn, and apply the latest addition to our technological inventory. The advent of e-mail has compressed communication patterns, committing us to “immediate” responses. World Wide Web home pages explode information sources, leaving us floundering for the best hypertext link to follow. Computer databases spin out reports on every imaginable aspect of our work.  How do we feel about our new status as “electronic advisors”? How is our interaction with students faring in all of this? Have we been able to secure more time for students to draw on our experience and knowledge through these labor-saving devices? What has happened to our priorities? Has quality of service to the students kept abreast with the demands of processing ever-increasing amounts of information? 

scholarly journals Virtual Link Aggregation Network Performance Using MikroTik Bonding

2020 ◽  
Vol 2 (2) ◽  
pp. 131-139
Author(s):  
Firmansyah Firmansyah ◽  
Mochamad Wahyudi ◽  
Rachmat Adi Purnama
Keyword(s):  
Quality Of Service ◽  
Transfer Rate ◽  
Network Performance ◽  
Data Packet ◽  
Virtual Link ◽  
Interface Bonding ◽  
Data Packets ◽  
Bandwidth Optimization ◽  
Network Link

Quality of Service in a network is a big thing that must be resolved and dealt with as best as possible. The limitation of the maximum transfer rate in network devices creates an obstacle in the process of transferring data packets. To maximize the transfer rate in network devices, you can use Virtual Link Aggregation which can offer bandwidth optimization and failover in the network. Link aggregation is a solution in combining several physical links into one logical link. The method used in this research is to consider the allocation of bandwidth, load balancing and failover in the link aggregation. From the results of the link aggregation test using two (2) interface bonding, the results of the bandwidth averages when there is a UPD data packet transfer to 0 bps / 184.9 Mbps, which was previously around 0 bps / 91.6 Mbps. While the result of the bandwidth averages when the TCP data packet transfer occurs is 0 bps / 105.5 Mbps, which was previously around 0 bps / 93.8 Mbps. Link Aggregation using a Mikrotik Router is a solution to produce a larger Throughput Bandwidth by combining two (2) Ethernet Physical Links into one logical link.

Voice and Video over Gigabit Ethernet and ATM Backbone Networks

2014 ◽  
pp. 174-184
Author(s):  
Nurul I. Sarkar ◽  
Yash Dole
Keyword(s):  
Quality Of Service ◽  
Network Performance ◽  
Performance Metrics ◽  
Asynchronous Transfer Mode ◽  
Atm Networks ◽  
Gigabit Ethernet ◽  
Corporate Networks ◽  
Backbone Networks ◽  
Network Technologies

This chapter aims to report on the performance of voice and video traffic over two popular backbone network technologies, namely Gigabit Ethernet (GbE) and Asynchronous Transfer Mode (ATM). ATM networks are being used by many universities and organizations for their unique characteristics such as scalability and guaranteed Quality of Service (QoS), especially for voice and video applications. Gigabit Ethernet matches ATM functionality by providing higher bandwidth at much lower cost, less complexity, and easier integration into the existing Ethernet technologies. It is useful to be able to compare these two technologies against various network performance metrics to find out which technology performs better for transporting voice and video conferencing. This chapter provides an in-depth performance analysis and comparison of GbE and ATM networks by extensive OPNET-based simulation. The authors measure the Quality of Service (QoS) parameters, such as voice and video throughput, end-to-end delay, and voice jitter. The analysis and simulation results reported in this chapter provide some insights into the performance of GbE and ATM backbone networks. This chapter may help network researchers and engineers in selecting the best technology for the deployment of backbone campus and corporate networks.

Best Communication Node Election for well-organized Path in Flat Topology

2017 ◽  
Vol 8 (2) ◽  
pp. 555
Author(s):  
M. Nisha ◽  
S. Poongavanam
Keyword(s):  
Quality Of Service ◽  
Sensor Networks ◽  
Power Supply ◽  
Data Transmission ◽  
Network Performance ◽  
Node Selection ◽  
Transmission Process ◽  
Research Protocols ◽  
Node Energy

<p>There has been an increasing attentiveness in the uses of sensor networks. Because sensors are normally controlled in on-board power supply, proficient supervision of the network is essential in improving the life of the sensor.<strong> </strong>The majority research protocols objective at offering link breakage reducing and mitigating from the same. Yet, selecting the well-organized communication do all the beneficial to the transmission process thus demonstrating better improvement in the network performance. In this article, we propose Best Communication Node Election for well-organized Path in Flat Topology The main goal of this<strong> </strong>work is to choose the best data transmission node in flat topology for improve the multi hop routing. This scheme, the best communication node selection based on Path Metric and this Path Metric is measured by the packet obtained rate, dropped rate, latency rate and node energy. This scheme provide guarantees quality of Service in the network.</p>

scholarly journals Assessment of the perception of service recipients about the quality of work in health care professionals in the Children Emergency Room of a Tertiary Hospital in Nigeria

2018 ◽  
Vol 1 (1) ◽  
Author(s):  
Chidiebere DI. Osuorah ◽  
Ikenna Kingsley Ndu ◽  
Ogechukwu F. Amadi ◽  
Uchenna Ekwochi ◽  
Obinna C. Nduagubam ◽  
...  
Keyword(s):  
Quality Of Service ◽  
Emergency Room ◽  
Health Care Professionals ◽  
Statistical Significance ◽  
University Teaching ◽  
Urgent Care ◽  
Cross Sectional ◽  
Sick Children ◽  
Better Than

The children emergency room (ER) is regarded as an essential section of hospitals and other healthcare settings where immediate medical and surgical care is given to children in need of urgent care. The conditions of the emergency room and the quality of service by the emergency room staff has been described as a major determinant of the socio-medical outcome of patients and their relatives. This is a hospital based cross-sectional carried out in the Children Emergency Room (CHER) of the Enugu State University Teaching Hospital, Enugu Nigeria. Parents and care-givers that presented with their sick children to the ER department were successively enrolled after obtaining consent. Information on their assessment of certain aspects of the emergency room environment and quality of service received from medical and administrative personnel working in the emergency room was obtained using a 5-point Likert assessment scale. Results were reported using frequencies, percentages and chisquare were applicable. Statistical significance was set at P≤0.05. Over half (59%) of the 83 respondents that presented to the emergency room during the study period were self-referrals and all (95.2%), but four respondents noted a significant improvement in the condition of their sick children following management in the emergency room. In all parameters assessed, most respondents rated the emergency room conditions as moderate in noise level 69 (83.1), crowdedness 65 (78.3), comfort 49 (59.0) and cleanliness 41 (49.4) with an overall point score of 2.97±0.33 out of a possible five. Doctors were on average rated better than nurses and record clerk staff in politeness (P=0.001), patience (P=0.002), efficiency (P=0.002), and adequate explanation of procedures (P=0.001) while nurses were rated better than record staff in explanation of procedures to their patient (P=0.05) but not in politeness (P=0.894), patience (P=0.505) and efficiency (P=0.982). The rating of record clerks was significantly affected by the socio-economic class of respondents (P=0.036) but not by gender (P=0.252) or age of respondents (P=0.123). None of the respondents’ socio-demographic factors significantly determined their rating for the emergency room conditions and the quality of service by doctors or nurses. There is a need for a continued review of emergency room conditions in addition to training and re-training of staff in the children emergency room. This not only helps improve health outcomes but may also significantly reduce the duration of stay in the emergency room that in turn reduces congestion and the burden on the healthcare system.

Research on the Network Topology and Reliability of the Communication System in Smart Substations

2013 ◽  
Vol 765-767 ◽  
pp. 1757-1760
Author(s):  
Zhi Ming Wang ◽  
Xian Li Sun ◽  
Li Liu ◽  
Xiao Rui Zhang
Keyword(s):  
Network Topology ◽  
Network Performance ◽  
Vital Role ◽  
Network System ◽  
Entire System ◽  
Advantages And Disadvantages ◽  
Network Topologies ◽  
The Relationship ◽  
Smart Substation

Communication network plays a vital role in smart substations. Different network topology provides different network performance, while the quality of network performance directly impacts the reliability of the entire system. In view of the network topology of smart substations, this paper compares the advantages and disadvantages of different network topologies as well as different network schemes of substation layer and process layer, and also analyzes the relationship between the reliability of network system and network topology, which play an important role in establishing a reliable and efficient smart substation system.

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