A Novel Degradation Scheme Based on User Satisfaction in CDMA Systems

2012 ◽  
Vol 198-199 ◽  
pp. 1678-1683
Author(s):  
Yong Wang ◽  
Xin Ge ◽  
Yu Bin Xu ◽  
Lin Ma
Keyword(s):  
Quality Of Service ◽  
User Satisfaction ◽  
Traditional Method ◽  
System Capacity ◽  
Cdma System ◽  
The Past ◽  
Cdma Systems ◽  
Simulation Results ◽  
Systems Simulation

Within the past few years, a great deal of attention has been drawn towards the CDMA system. The state of a CDMA system has two cases: saturation and instauration. After the system is saturated, no more users are allowed to access to CDMA systems with traditional method. In order to enhance the maximum number of users and the all users’ satisfaction while guaranteeing users’ quality of service (QoS) –SINR (signal-to-interference–plus-noise) requirement, this paper presents a degradation scheme based on user satisfaction in CDMA systems. Simulation results show that the proposed scheme can be allowed more users to access to and increase the total users’ satisfaction, leading to higher system capacity and resource utilization.

Fallback Based k-Hop Backtracking Trustworthy Rerouting Mechanism

2013 ◽  
Vol 427-429 ◽  
pp. 2229-2236
Author(s):  
Lei Yang ◽  
Xing Wei Wang ◽  
Min Huang
Keyword(s):  
Quality Of Service ◽  
Success Rate ◽  
User Satisfaction ◽  
Evaluation Model ◽  
Trust Evaluation ◽  
Calculation Methods ◽  
Simulation Results ◽  
User Trust ◽  
Failure Node

When some links or nodes on the path break down, a rerouting path should be found in trustworthy network. In this paper, a fallback based k-hop backtracking trustworthy QoS (Quality of Service) rerouting mechanism is proposed. First,the network model and user trust evaluation model are constructed. Then the description of users requirements, the calculation methods of users satisfaction and the criterion of path judgments are presented. Considering users QoS requirements, trustworthy requirements and decrease of the algorithm cost, fallback is used for backtracking rerouting at the previous node of the failure node (or link) in the proposed mechanism. It reuses original links of the path as much as possible to reduce the time of rerouting. The simulation results show that the proposed mechanism is both feasible and effective. In contrast to existing mechanisms, both the rerouting success rate and user satisfaction degree are increased and the rerouting time is reduced under uses requirements.

scholarly journals On the Design of Efficient Hierarchic Architecture for Software Defined Vehicular Networks

Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1400
Author(s):  
Muhammad Adnan ◽  
Jawaid Iqbal ◽  
Abdul Waheed ◽  
Noor Ul Amin ◽  
Mahdi Zareei ◽  
...  
Keyword(s):  
Cloud Computing ◽  
Quality Of Service ◽  
Traffic Management ◽  
Vehicular Networks ◽  
Scheduling Algorithm ◽  
Main Research ◽  
First Come First Serve ◽  
Computing Framework ◽  
Simulation Results

Modern vehicles are equipped with various sensors, onboard units, and devices such as Application Unit (AU) that support routing and communication. In VANETs, traffic management and Quality of Service (QoS) are the main research dimensions to be considered while designing VANETs architectures. To cope with the issues of QoS faced by the VANETs, we design an efficient SDN-based architecture where we focus on the QoS of VANETs. In this paper, QoS is achieved by a priority-based scheduling algorithm in which we prioritize traffic flow messages in the safety queue and non-safety queue. In the safety queue, the messages are prioritized based on deadline and size using the New Deadline and Size of data method (NDS) with constrained location and deadline. In contrast, the non-safety queue is prioritized based on First Come First Serve (FCFS) method. For the simulation of our proposed scheduling algorithm, we use a well-known cloud computing framework CloudSim toolkit. The simulation results of safety messages show better performance than non-safety messages in terms of execution time.

scholarly journals Evaluasi Kualitas Layanan Website Alumni Menggunakan Metode Webqual 4.0

2019 ◽  
Vol 5 (2) ◽  
pp. 105
Author(s):  
Anisa Yulandari ◽  
Wing Wahyu Winarno ◽  
Asro Nasiri
Keyword(s):  
Quality Of Service ◽  
User Satisfaction ◽  
Information Quality ◽  
Three Dimensions ◽  
Job Seekers ◽  
End User ◽  
Interaction Quality ◽  
Service Interaction

Website Portal Alumni Amikom Yogyakarta yang dapat diakses pada alamat domain alumni.amikom.ac.id merupakan bagian dari Universitas Amikom Yogyakarta yang berfungsi sebagai sarana berbagi informasi sekaligus bertindak sebagai penghubung antara perusahaan pencari tenaga kerja dan para pencari kerja khususnya alumni Universitas Amikom Yogyakarta. Selama ini website alumni sudah berjalan belum dilakukan evaluasi terhadap kualitas layanan website yang didasarkan pada persepsi pengguna akhir sebagai umpan balik kepada pengelola website sehingga pengelola dapat mengetahui sejauh mana kepuasan pengguna dan kualitas layanan yang sudah diberikan. Tujuan dari penelitian ini yaitu untuk mengetahui kualitas layanan website alumni menggunakan tiga dimensi yang ada pada metode Webqual 4.0. Tiga dimensi itu sendiri terdiri dari Kegunaan, Kualitas Informasi, dan Kualitas Interaksi Layanan. Pendistribusian kuisioner dilakukan terhadap 200 sampel responden. Kesimpulan dari penelitian ini adalah adanya pengaruh ketiga dimensi Webqual 4.0 terhadap kepuasan pengguna. Dimensi yang paling berpengaruh yaitu Kualitas Informasi dan Kualitas Interaksi Layanan. Hal ini berarti peningkatan dapat dilakukan pada indicator yang memiliki nilai rata-rata terendah. Peningkatan pada dimensi Kualitas Informasi dapat dilakukan perbaruan secara berkala sehingga informasi yang disajikan menjadi lebih relevan. Sedangkan untuk dimensi Kualitas Interaksi Layanan dapat dilakukan dengan meningkatkan pelayanan terhadap keluhan seputar website alumni.Kata Kunci — Kualitas Layanan, Website Alumni, Webqual 4.0The Alumni Amikom Yogyakarta Website which can be accessed at the domain address alumni.amikom.ac.id is part of the Amikom University of Yogyakarta which serves as a means of sharing information while acting as a liaison between the company and job seekers, especially alumni of Yogyakarta Amikom University. So far, the alumni website has been running, yet an evaluation of the quality of website services has been carried out based on the perception of the end user as feedback to the website manager so that the manager can find out how far the user satisfaction is and the quality of the service provided. The purpose of this study is to determine the quality of the alumni website service using three dimensions that exist in the method of Webqual 4.0, there are Usability, Information Quality, and Service Interaction Quality. The conclusion of this study is the influence of the three dimensions of Webqual 4.0 on user satisfaction. The most influential dimensions are Information Quality and Service Interaction Quality. This means that an increase can be made on an indicator that has the lowest average valueKeywords— Quality of Service, Alumni Website, Webqual 4.0

scholarly journals Introducing a Mobility Access Category for IEEE 802.11e

2020 ◽  
Vol 9 (5) ◽  
pp. 1610-1614
Keyword(s):  
Quality Of Service ◽  
Wireless Network ◽  
Ieee 802.11E ◽  
Network Simulator ◽  
Mobile Nodes ◽  
Mobile Stations ◽  
Simulation Scenario ◽  
Simulation Results ◽  
The Impact

With traffic increase in a wireless network beyond its capacity and as the number of connected devices continue to grow, the quality of service (QoS) degrades. In this paper we study the impact of mobility on throughput in the case of an infrastructure wireless network using IEEE 802.11 Wi-Fi standard. Since we found in the literature that the mobility of stations can have an impact on the quality of service, we try to remedy to this by implementing a new access category reserved for mobile stations. First we compare the throughput between static and mobile nodes, both connected to a QoS station. Then we propose our new model that consists of adding a new access category used by mobile nodes regardless of their traffic category. The study was made by simulating different scenarios using Network Simulator-3 (NS-3). We found that the throughput may vary depending on the simulation scenario. The simulation results show that with the proposed solution the mobile nodes can have a better throughput.

scholarly journals PENGARUH KUALITAS PELAYANAN KESEHATAN TERHADAP KEPUASAN PENGGUNA BADAN PENYELENGGARA JAMINAN SOSIAL (BPJS) DI RUMAH SAKIT BHAYANGKARA SURABAYA TAHUN 2016

2018 ◽  
Vol 4 (1) ◽  
Author(s):  
Adillia Anora Ivanda Sany
Keyword(s):  
Quality Of Service ◽  
User Satisfaction ◽  
Social Insurance ◽  
Descriptive Analysis ◽  
Mechanical Analysis ◽  
Public Health Care ◽  
Hospital Services ◽  
Community Satisfaction ◽  
The Public

Influence of health service quality to user satisfaction of social insurance provider institution (BPJS) at Bhayangkara Hospital Surabaya 2016. The hospital is as a public health care provide services that are effective, efficient and required to each patient. The patient satisfaction is as a benchmark level of quality health services. This study aims to determine and analyze the influence of the quality of hospital services Bhayangkara Surabaya to client satisfaction BPJS users as well as identify and analyze the application of Community Satisfaction Indicators according to the rules Menpan and Bureaucratic Reform Indonesia. The research method is descriptive used a questionnaire or questionnaires by interviews and observation. Mechanical analysis used quantitative descriptive analysis. There are 20 respondents surveyed in this study by answering questions based on a questionnaire given to assess public opinion about the quality of sevice and its effects on people's satisfaction. Independent variables namely the quality of service and the dependent variable is community satisfaction. The results based on the results of the processing of qualitative data through interviews and observations in general satisfaction of the public regarding the quality of hospital services Bhayangkara especially give well satfisfaction to members of BPJS. This indicates that the RS Bhayangkara constantly working on providing the best service for society to improve and try to give satisfaction to the public.  Keywords: Quality of Service, Society Satisfaction, RS Bhayangkara

scholarly journals IMPACT OF QUEUING DISCIPLINES ON THE PERFORMANCE OF MULTI-CLASS TRAFFIC IN A NETWORK

2021 ◽  
Vol 9 (1) ◽  
pp. 691-697
Author(s):  
N. Sugirtham, R. Sherine Jenny
Keyword(s):  
Quality Of Service ◽  
User Satisfaction ◽  
File Transfer ◽  
Network Resources ◽  
Network Applications ◽  
End To End Delay ◽  
Opinion Score ◽  
Quality Of Service Parameters ◽  
First In First Out

Network applications demand quality of service for enhanced call quality and increased user satisfaction. Hence, implementing queuing discipline at switches and routers in a network will govern the way packets are buffered while waiting for transmission. Queuing disciplines like first-in first-out (FIFO) queuing, priority queuing (PQ), weighted-fair queuing (WFQ), custom queuing and modified weighted round robin are more prominently deployed in network applications. These queuing disciplines help to control and manage network resources by fixing priorities for specific types of data on the network. The paper aims to analyze the quality of service parameters for various real time applications like File transfer protocol(FTP), email, database, Voice over IP(VOIP), video and web browsing,etc., and helps to optimise the use of available network resources. Moreover the quality of the network is compared using different QoS parameters such as end-to-end delay, throughput, jitter and Mean Opinion Score (MOS). This paper focuses on various queuing disciplines with low and high network traffic.

Quality of Service in UMTS Mobile Systems

2010 ◽  
pp. 14-51
Author(s):  
Jahangir Dadkhah Chimeh
Keyword(s):  
Quality Of Service ◽  
Mobile Systems ◽  
System Capacity ◽  
Data Traffic ◽  
Air Interface ◽  
Layer 2 ◽  
Qos Parameters ◽  
Erlang Capacity ◽  
Transport Channels

Mobile systems and particularly UMTS are growing fast. These systems convey data based services in addition to customary voice services. Quality of service is a function of data rate, delay and signal to noise plus interference ratio in these systems. In this Chapter first the author pays attention to UMTS and its QoS architecture, then to service categorization due to QoS. Afterwards he reviews some QoS parameters. Then he studies Layer 2 QoS parameters and general concepts about Transport channels. Then he review TCP effects on the throughput in the air interface. he introduces HSDPA in the next section. Finally he pays attention to data traffic models and their effects on the system capacity and Erlang capacity and delay in the system.

scholarly journals HMB-I/O: Fast Track for Handling Urgent I/Os in Nonvolatile Memory Express Solid-State Drives

2020 ◽  
Vol 10 (12) ◽  
pp. 4341
Author(s):  
Kyusik Kim ◽  
Seongmin Kim ◽  
Taeseok Kim
Keyword(s):  
Quality Of Service ◽  
Solid State ◽  
User Satisfaction ◽  
Nonvolatile Memory ◽  
Fast Track ◽  
Solid State Drives ◽  
Solid State Drive ◽  
Memory Buffer

Differentiated I/O services for applications with their own requirements are very important for user satisfaction. Nonvolatile memory express (NVMe) solid-state drive (SSD) architecture can improve the I/O bandwidth with its numerous submission queues, but the quality of service (QoS) of each I/O request is never guaranteed. In particular, if many I/O requests are pending in the submission queues due to a bursty I/O workload, urgent I/O requests can be delayed, and consequently, the QoS requirements of applications that need fast service cannot be met. This paper presents a scheme that handles urgent I/O requests without delay even if there are many pending I/O requests. Since the pending I/O requests in the submission queues cannot be controlled by the host, the host memory buffer (HMB), which is part of the DRAM of the host that can be accessed from the controller, is used to process urgent I/O requests. Instead of sending urgent I/O requests into the SSDs through legacy I/O paths, the latency is removed by directly inserting them into the HMB. Emulator experiments demonstrated that the proposed scheme could reduce the average and tail latencies by up to 99% and 86%, respectively.

Domain-Based Level Trust Manage Model

2011 ◽  
Vol 204-210 ◽  
pp. 83-87
Author(s):  
Xiao Xue Ma ◽  
Zi Xian Wang ◽  
Jing Bian ◽  
Fei Liu
Keyword(s):  
Quality Of Service ◽  
Service Provider ◽  
Domain Model ◽  
Human Society ◽  
Accurate Assessment ◽  
Trust Degree ◽  
Simulation Results ◽  
The Difference ◽  
Relationship Of

Draw on the trust relationship of human society, domain model and domain trust are introduced to build domain-based level trust manage model (DLTMM). In various domains, according to physical services characteristics of their own, entities abstract representative attribution. According to their preferences the service requester preferences comprehensive evaluate the service attributions, and to determines whether transaction; After trading, the service requester will calculate the difference degree of quality of service according to the actual quality of service and the claimed quality of service, and then judge the trust degree of service provider. The simulation results show that the model can more accurate assessment of the trust entity, to some extent effective against malicious attacks, which proves the validity and accuracy of the model.

scholarly journals Consensus Congestion Control in Multirouter Networks Based on Multiagent System

Complexity ◽  
2017 ◽  
Vol 2017 ◽  
pp. 1-10 ◽  
Author(s):  
Xinhao Yang ◽  
Sheng Xu ◽  
Ze Li
Keyword(s):  
Congestion Control ◽  
Multiagent Systems ◽  
Traffic Congestion ◽  
Multiagent System ◽  
The Internet ◽  
Network Congestion ◽  
Network Resources ◽  
Simulation Results ◽  
Systems Simulation

Due to the unbalance distribution of network resources and network traffic, congestion is an inherent property of the Internet. The consensus congestion controller based on the multiagent system theory is designed for the multirouter topology, which improves the performance of the whole networks. Based on the analysis of the causes of congestion, the topology of multirouter networks is modeled based on the graph theory and the network congestion control problem is described as a consensus problem in multiagent systems. Simulation results by MATLAB and Ns2 indicate that the proposed algorithm maintains a high throughput and a low packet drip ratio and improves the quality of the service in the complex network environment.

Sign in / Sign up

Export Citation Format

Share Document