scholarly journals Data-Driven Construction of User Utility Functions from Radio Connection Traces in LTE

Electronics ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 829
Author(s):  
Antonio J. García ◽  
Carolina Gijón ◽  
Matías Toril ◽  
Salvador Luna-Ramírez
Keyword(s):  
User Experience ◽  
Mobile Networks ◽  
Network Performance ◽  
Packet Delay ◽  
Lte Networks ◽  
Management Processes ◽  
Adequate Quality ◽  
Qoe Model ◽  
The Impact

In recent years, the number of services in mobile networks has increased exponentially. This increase has forced operators to change their network management processes to ensure an adequate Quality of Experience (QoE). A key component in QoE management is the availability of a precise QoE model for every service that reflects the impact of network performance variations on the end-user experience. In this work, an automatic method is presented for deriving Quality-of-Service (QoS) thresholds in analytical QoE models of several services from radio connection traces collected in an Long Term Evolution (LTE) network. Such QoS thresholds reflect the minimum connection performance below which a user gives up its connection. The proposed method relies on the fact that user experience influences the traffic volume requested by users. Method assessment is performed with real connection traces taken from live LTE networks. Results confirm that packet delay or user throughput are critical factors for user experience in the analyzed services.

scholarly journals The Effect of Overlapping Area on Ping-Pong Handover in LTE Networks

2015 ◽  
Vol 1 (4) ◽  
pp. 433
Author(s):  
Kinan Ghanem ◽  
Haysam Al-Radwan ◽  
Ahmad Ahmad
Keyword(s):  
Mobile Networks ◽  
Network Performance ◽  
Lte Networks ◽  
Network Load ◽  
Novel Approach ◽  
Ping Pong

Handover (HO) technique in LTE networks suffers from Ping-pong movement. Ping-pong HO can reduce the quality of the mobile user’s connection and increases the numbers of handovers which in turn raises the network load and generally degrades the network performance.   The work aims to present a novel approach to reduce the undesirable effects of ping-pong HO in LTE Mobile Networks using timer. The study focused on the ping-ping phenomenon taking into account maintained the dropped calls rates at lowest levels. The optimal timer values are determined based on the width of overlapping area, user velocity and type of eNodeB.  Analyzed results showed that the changes of overlapping area directly affect the timer values of the proposed algorithm. Optimal timer value should be selected precisely according to the width of the overlapping area, user velocity and timer value in order to reduce the ping-pong HO.

scholarly journals Measuring Key Quality Indicators in Cloud Gaming: Framework and Assessment Over Wireless Networks

Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1387
Author(s):  
Oswaldo Sebastian Peñaherrera-Pulla ◽  
Carlos Baena ◽  
Sergio Fortes ◽  
Eduardo Baena ◽  
Raquel Barco
Keyword(s):  
Communication Networks ◽  
Mobile Networks ◽  
Video Game ◽  
Know How ◽  
Fifth Generation ◽  
New Generation ◽  
Graphics Rendering ◽  
The Impact

Cloud Gaming is a cutting-edge paradigm in the video game provision where the graphics rendering and logic are computed in the cloud. This allows a user’s thin client systems with much more limited capabilities to offer a comparable experience with traditional local and online gaming but using reduced hardware requirements. In contrast, this approach stresses the communication networks between the client and the cloud. In this context, it is necessary to know how to configure the network in order to provide service with the best quality. To that end, the present work defines a novel framework for Cloud Gaming performance evaluation. This system is implemented in a real testbed and evaluates the Cloud Gaming approach for different transport networks (Ethernet, WiFi, and LTE (Long Term Evolution)) and scenarios, automating the acquisition of the gaming metrics. From this, the impact on the overall gaming experience is analyzed identifying the main parameters involved in its performance. Hence, the future lines for Cloud Gaming QoE-based (Quality of Experience) optimization are established, this way being of configuration, a trendy paradigm in the new-generation networks, such as 4G and 5G (Fourth and Fifth Generation of Mobile Networks).

scholarly journals IMPLEMENTATION OF TOTAL QUALITY MANAGEMENT IN FACILITIES TO IMPROVE INSTITUTION QUALITY SCHOOL

2021 ◽  
Vol 6 (1) ◽  
pp. 97-124
Author(s):  
Poetri Leharia Pakpahan ◽  
Wiji Hidayati
Keyword(s):  
Quality Management ◽  
Total Quality Management ◽  
Learning Process ◽  
Analytical Study ◽  
Quality Of Education ◽  
Total Quality ◽  
Library Research ◽  
Adequate Quality ◽  
The Impact

One of the improvements in the quality of education is the fulfillment of the needs for facilities and adequate, quality, and ready-to-use educational infrastructure. So as for the impact of the lack of proper infrastructure of school institutions, namely that it can reduce student achievement in learning activities, especially in class. Therefore, to improve the quality of education in schools, management of facilities and infrastructure is needed to meet the needs of the student learning process at school. This study aims to determine the implementation of total quality management in improving the quality of infrastructure in schools. This research using library research with analytical study methods (library research), namely research carried out using a library alias literature, either in the form of notes, books, journals, or reports of previous research results. The analytical study used is content analytical and analytical descriptions of total quality management to improve infrastructure at school. The results of this study indicate that the facilities and infrastructure at the school are inadequate standards. Therefore, the use of infrastructure in the learning process must also be improved, as an increase in service quality continuously meets the reality and expectations for customers.

scholarly journals An evaluation of foundation doctor training: a mixed-methods study of the impact on workforce well-being and patient care [the Evaluating the Impact of Doctors in Training (EDiT) study]

2013 ◽  
Vol 1 (15) ◽  
pp. 1-208 ◽  
Author(s):  
S Mason ◽  
C O’Keeffe ◽  
A Carter ◽  
R O’Hara ◽  
C Stride
Keyword(s):  
Health Care ◽  
Quality Of Care ◽  
Longitudinal Study ◽  
Phase 1 ◽  
Well Being ◽  
Junior Doctors ◽  
Phase 2 ◽  
Adequate Quality ◽  
The Impact

BackgroundA major reform of junior doctor training was undertaken in 2004–5, with the introduction of foundation training (FT) to address perceived problems with work structure, conditions and training opportunities for postgraduate doctors. The well-being and motivation of junior doctors within the context of this change to training (and other changes such as restrictions in working hours of junior doctors and increasing demand for health care) and the consequent impact upon the quality of care provided is not well understood.ObjectivesThis study aimed to evaluate the well-being of foundation year 2 (F2) doctors in training. Phase 1 describes the aims of delivering foundation training with a focus on the role of training in supporting the well-being of F2 doctors and assesses how FT is implemented on a regional basis, particularly in emergency medicine (EM). Phase 2 identifies how F2 doctor well-being and motivation are influenced over F2 and specifically in relation to EM placements and quality of care provided to patients.MethodsPhase 1 used semistructured interviews and focus groups with postgraduate deanery leads, training leads (TLs) and F2 doctors to explore the strategic aims and implementation of FT, focusing on the specialty of EM. Phase 2 was a 12-month online longitudinal study of F2 doctors measuring levels of and changes in well-being and motivation. In a range of specialties, one of which was EM, data from measures of well-being, motivation, intention to quit, confidence and competence and job-related characteristics (e.g. work demands, task feedback, role clarity) were collected at four time points. In addition, we examined F2 doctor well-being in relation to quality of care by reviewing clinical records (criterion-based and holistic reviews) during the emergency department (ED) placement relating to head injury and chronic obstructive pulmonary disease (COPD).ResultsPhase 1 of the study found that variation exists in how successfully FT is implemented locally; F2 lacks a clearly defined end point; there is a minimal focus on the well-being of F2 doctors (only on the few already shown to be ‘in difficulty’); the ED presented a challenging but worthwhile learning environment requiring a significant amount of support from senior ED staff; and disagreement existed about the performance and confidence levels of F2 doctors. A total of 30 EDs in nine postgraduate medical deaneries participated in phase 2 with 217 foundation doctors completing the longitudinal study. F2 doctors reported significantly increased confidence in managing common acute conditions and undertaking practical procedures over their second foundation year, with the biggest increase in confidence and competence associated with their ED placement. F2 doctors had levels of job satisfaction and anxiety/depression that were comparable to or better than those of other NHS workers, and adequate quality and safety of care are being provided for head injury and COPD.ConclusionsThere are ongoing challenges in delivering high-quality FT at the local level, especially in time-pressured specialties such as EM. There are also challenges in how FT detects and manages doctors who are struggling with their work. The survey was the first to document the well-being of foundation doctors over the course of their second year, and average scores compared well with those of other doctors and health-care workers. F2 doctors are benefiting from the training provided as we found improvements in perceived confidence and competence over the year, with the ED placement being of most value to F2 doctors in this respect. Although adequate quality of care was demonstrated, we found no significant relationships between well-being of foundation doctors and the quality of care they provided to patients, suggesting the need for further work in this area.FundingThe National Institute for Health Research Health Services and Delivery Research programme.

scholarly journals Using a platform based on the Basic profile of ISO/IEC 29110 to reinforce DevOps environments

2021 ◽  
Vol 27 (2) ◽  
pp. 91-110
Author(s):  
Mirna Munoz ◽  
Mario Negrete ◽  
Magdalena Arcilla-Cobián
Keyword(s):  
Cultural Change ◽  
Negative Consequences ◽  
Continuous Change ◽  
New Paradigm ◽  
Software Products ◽  
Management Processes ◽  
Quality Of Products ◽  
The Impact ◽  
Web Platform

The growth of software demand has caused more competition among customers who expect faster changes and better quality in the software products delivered. The need to satisfy the continuous requirements of the market, the need to keep the quality of products and services, as well as the need to improve their processes become a difficult task for organizations. DevOps arises to handle this continuous change because it addresses the reduction of the gap between development and operation. However, the influence of this new paradigm in organizations becomes a big challenge, mainly related to a cultural change. If the change of culture is not properly implemented, it could impact a team with negative consequences. In this context, there is no specific guidance that helps organizations with their implementation. Based on the lack of guidance, this paper presents the Reinforced DevOps Guidance, which aims to help teams to achieve an evolution of their software development, software delivery, and project management processes toward a proper DevOps implementation. The guidance uses a web platform that allows a dynamic implementation. That way helps teams to understand the set of tasks to be followed and the impact of their implementation on their current organizations. This paper shows both an overview of the guidance, highlighting the web platform, and its application in a very small entity (VSE). The results show that the use of the guidance: provides support toward addressing the effort in VSEs; gives the information of the technology, processes, and teams aspects that should be improved; and allows the cultural change in a pace supported by VSEs.

scholarly journals Computerized Quality of Life Assessment: A Randomized Experiment to Determine the Impact of Individualized Feedback on Assessment Experience (Preprint)

2018 ◽  
Author(s):  
Daan Geerards ◽  
Andrea Pusic ◽  
Maarten Hoogbergen ◽  
René van der Hulst ◽  
Chris Sidey-Gibbons
Keyword(s):  
Quality Of Life ◽  
User Experience ◽  
Computerized Adaptive Testing ◽  
Life Assessment ◽  
World Health ◽  
Quality Of Life Assessment ◽  
Fixed Length ◽  
Graphical Feedback ◽  
The Impact

BACKGROUND Quality of life (QoL) assessments, or patient-reported outcome measures (PROMs), are becoming increasingly important in health care and have been associated with improved decision making, higher satisfaction, and better outcomes of care. Some physicians and patients may find questionnaires too burdensome; however, this issue could be addressed by making use of computerized adaptive testing (CAT). In addition, making the questionnaire more interesting, for example by providing graphical and contextualized feedback, may further improve the experience of the users. However, little is known about how shorter assessments and feedback impact user experience. OBJECTIVE We conducted a controlled experiment to assess the impact of tailored multimodal feedback and CAT on user experience in QoL assessment using validated PROMs. METHODS We recruited a representative sample from the general population in the United Kingdom using the Oxford Prolific academic Web panel. Participants completed either a CAT version of the World Health Organization Quality of Life assessment (WHOQOL-CAT) or the fixed-length WHOQOL-BREF, an abbreviated version of the WHOQOL-100. We randomly assigned participants to conditions in which they would receive no feedback, graphical feedback only, or graphical and adaptive text-based feedback. Participants rated the assessment in terms of perceived acceptability, engagement, clarity, and accuracy. RESULTS We included 1386 participants in our analysis. Assessment experience was improved when graphical and tailored text-based feedback was provided along with PROMs (Δ=0.22, P<.001). Providing graphical feedback alone was weakly associated with improvement in overall experience (Δ=0.10, P=.006). Graphical and text-based feedback made the questionnaire more interesting, and users were more likely to report they would share the results with a physician or family member (Δ=0.17, P<.001, and Δ=0.17, P<.001, respectively). No difference was found in perceived accuracy of the graphical feedback scores of the WHOQOL-CAT and WHOQOL-BREF (Δ=0.06, P=.05). CAT (stopping rule [SE<0.45]) resulted in the administration of 25% fewer items than the fixed-length assessment, but it did not result in an improved user experience (P=.21). CONCLUSIONS Using tailored text-based feedback to contextualize numeric scores maximized the acceptability of electronic QoL assessment. Improving user experience may increase response rates and reduce attrition in research and clinical use of PROMs. In this study, CAT administration was associated with a modest decrease in assessment length but did not improve user experience. Patient-perceived accuracy of feedback was equivalent when comparing CAT with fixed-length assessment. Fixed-length forms are already generally acceptable to respondents; however, CAT might have an advantage over longer questionnaires that would be considered burdensome. Further research is warranted to explore the relationship between assessment length, feedback, and response burden in diverse populations.

scholarly journals FRAMEWORK FOR MODELLING MOBILE NETWORK QUALITY OF EXPERIENCE THROUGH BIG DATA ANALYTICS APPROACH

2017 ◽  
Author(s):  
Ayisat Wuraola Yusuf-Asaju ◽  
Zulkhairi Md. Dahalin ◽  
Azman Ta’a
Keyword(s):  
User Experience ◽  
Data Analytics ◽  
Network Performance ◽  
Laboratory Experiments ◽  
Quality Of Experience ◽  
Big Data Analytics ◽  
Mobile Network ◽  
Mobile Internet ◽  
Mobile Network Operators

The increase in the usage of different mobile internet applications can cause deterioration in the mobile network performance. Such deterioration often declines the performance of the mobile network services that can influence the mobile Internet user’s experience, which can make the internet users switch between different mobile network operators to get good user experience. In this case, the success of mobile network operators primarily depends on the ability to ensure good quality of experience (QoE), which is a measure of users’ perceived quality of mobile Internet service. Traditionally, QoE is usually examined in laboratory experiments to enable a fixed contextual factor among the participants even though the results derived from these laboratory experiments presented an estimated mean opinion score representing perceived QoE. The use of user experience dataset involving time and location gathered from the mobile network traffic for modelling perceived QoE is still limited in the literature. The mobile Internet user experience dataset involving the time and location constituted in the mobile network can be used by the mobile network operators to make data-driven decisions to deal with disruptions observed in the network performance and provide an optimal solution based on the insights derived from the user experience data. Therefore, this paper proposed a framework for modelling mobile network QoE using the big data analytics approach. The proposed framework describes the process of estimating or predicting perceived QoE based on the datasets obtained or gathered from the mobile network to enable the mobile network operators effectively to manage the network performance and provide the users a satisfactory mobile Internet QoE.  

scholarly journals Network Performance Criteria for Telecommunication Traffic Types driven by Quality of Experience

2019 ◽  
Vol 15 (3) ◽  
pp. 233-244 ◽  
Author(s):  
Ines Ramadža ◽  
Vesna Pekić ◽  
Julije Ožegović
Keyword(s):  
Network Performance ◽  
Quality Of Experience ◽  
Performance Criteria ◽  
Live Streaming ◽  
Traffic Routing ◽  
Different Types ◽  
Telecom Operator ◽  
The Impact ◽  
The Given

A common reason for changing the chosen service provider is the users' perception of service. Quality of Experience (QoE) describes the end user's perception of service while using it. A frequent cause of QoE degradation is inadequate traffic routing, where, other than throughput, selected routes do not satisfy minimum network requirements for the given service or services. In order to enable QoE-driven routing, per traffic type defined routing criteria are required. Our goal was to obtain those criteria for relevant services of a telecom operator. For the purpose of identifying services of interest, we first provide short results of user traffic analysis within the telecom operator network. Next, our work presents testbed measurements which explore the impact of packet loss and delay on user QoE for video, voice, and management traffic. For video services, we investigated separately multicast delivery, unicast HTTP Live Streaming (HLS), and unicast Real Time Streaming Protocol (RTSP) traffic. Applying a threshold to QoE values, from the measured dependencies we extracted minimum network performance criteria for the investigated different types of traffic. Finally, we provide a comparison with results available in the literature on the topic.

scholarly journals Performance Analysis on Multiple Device Connections of Small Office Home Office Network

2021 ◽  
Vol 18 (4(Suppl.)) ◽  
pp. 1457
Author(s):  
Muhamad Nur Ashaari ◽  
Murizah Kassim ◽  
Ruhani Ab. Rahman ◽  
Abd Razak Mahmud
Keyword(s):  
Performance Analysis ◽  
Packet Loss ◽  
High Speed ◽  
Network Performance ◽  
Network Services ◽  
Quality Of Services ◽  
Home Office ◽  
Internet Connections ◽  
The Impact

Malaysia has been supported by one of the high-speed fiber internet connections called TM UniFi. TM UniFi is very familiar to be used as a medium to apply Small Office Home Office (SOHO) concept due to the COVID-19 pandemic. Most of the communication vendors offer varieties of network services to fulfill customers' needs and satisfaction during the pandemic. Quality of Services is queried by most users by the fact of increased on users from time to time. Therefore, it is crucial to know the network performance contrary to the number of devices connected to the TM UniFi network. The main objective of this research is to analyze TM UniFi performance with the impact of multiple device connections or users' services. The study was conducted to analyze the QoS on its traffic, packets transfer, RTT, latency, and throughput. Wireshark simulation program has been used as a network traffic capture where PCAP files have been analyzed by using PCAP Analyzer for Splunk. Traffic filtering has been enabled to capture selected traffic to measure network performance. The result shows that better network performance can be achieved if a smaller number of devices are connected at the same time.  The percentage of packet loss, RTT, latency is increased when more users connected at the same time. The throughput also shows a decrease for multi-device connections. Based on the analysis it can be concluded that TM UniFi still can provide good network services for the SOHO network environment and sufficient bandwidth despite the rapid user growth in Malaysia.

scholarly journals Maximum Transmit Power for UE in an LTE Small Cell Uplink

Electronics ◽  
2019 ◽  
Vol 8 (7) ◽  
pp. 796 ◽  
Author(s):  
Amir Haider ◽  
Seung-Hoon Hwang
Keyword(s):  
Power Control ◽  
Network Performance ◽  
Fractional Power ◽  
Small Cell ◽  
Control Mode ◽  
Small Cells ◽  
Transmit Power ◽  
Lte Networks ◽  
Maximum Transmit Power ◽  
The Impact

To furnish the network with small cells, it is vital to consider parameters like cell size, interference in the network, and deployment strategies to maximize the network’s performance gains expected from small cells. With a small cell network, it is critical to analyze the impact of the uplink power control parameters on the network’s performance. In particular, the maximum transmit power (Pmax) for user equipment (UE) needs to be revisited for small cells, since it is a major contributor towards interference. In this work, the network performance was evaluated for different Pmax values for the small cell uplink. Various deployment scenarios for furnishing the existing macro layer in LTE networks with small cells were considered. The Pmax limit for a small cell uplink was evaluated for both homogenous small cell and heterogeneous networks (HetNet). The numerical results showed that it would be appropriate to adopt Pmax = 18 dBm in uniformly distributed small cells rather than Pmax = 23 dBm, as in macro environments. The choice of Pmax = 18 dBm was further validated for three HetNet deployment scenarios. A decrease of 0.52 dBm and an increase of 0.03 dBm and 3.29 dBm in the proposed Pmax = 18 dBm were observed for the three HetNet deployments, respectively. Furthermore, we propose that the fractional power control mode can be employed instead of the full compensation mode in small cell uplinks.

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