Improving Quality of Experience of Subscribers through Post Deployment Network Planning in UMTS Cellular Networks

2012 ◽  
Vol 8 (3) ◽  
pp. 1-27
Author(s):  
Samir Kumar Sadhukhan ◽  
Swarup Mandal
Keyword(s):  
User Experience ◽  
Cellular Network ◽  
Quality Of Experience ◽  
Service Management ◽  
Cost Effective ◽  
Management Problem ◽  
Network Service ◽  
Heuristic Techniques ◽  
Effective Manner

It is an established fact that cost of churning is a common concern for being profitable in the cellular network service provider’s space. Service providers can view this problem as a service management problem and can have a solution to enhance the stickiness of subscribers by managing the quality of user experience. Quality of Experience (QoE) is important in contrast to Quality of Service (QoS). Three basic components of service management are stage, prop, and user experience. In this cellular network service context, network infrastructure acts as prop. Prop needs to be flexible to enable the personalization in providing the service. In reality the major challenge for a service provider is keep the fitment between prop and the dynamic changes in subscriber profile in a cost effective manner. To define the problem more precisely, the authors take the conventional UMTS cellular network. Here, operators have considered single-homing of RNCs to MSCs/SGSNs (i.e., many-to-one mapping) with an objective to generate service at lower cost over a fixed period of time. However, a single-homing network does not remain cost-effective and flexible anymore when subscribers later begin to show specific inter-MSC/SGSN mobility patterns over time. This necessitates post-deployment topological extension of the network in which some specific RNCs are connected to two MSCs/SGSNs via direct links resulting in a more complex many-to-two mapping structure in parts of the network. The authors formulate the scenario as a combinatorial optimization problem and solve the NP-Complete problem using three meta-heuristic techniques, namely Simulated Annealing (SA), Tabu search (TS), and Ant colony optimization (ACO). They then compare these techniques with a novel optimal heuristic search method that the authors propose typically to solve the problem. The comparative results reveal that the search-based method is more efficient than meta-heuristic techniques in finding optimal solutions quickly.

scholarly journals Quality of Experience in Cyber-Physical Social Systems Based on Reinforcement Learning and Game Theory

2018 ◽  
Vol 10 (11) ◽  
pp. 108 ◽  
Author(s):  
Eirini Tsiropoulou ◽  
George Kousis ◽  
Athina Thanou ◽  
Ioanna Lykourentzou ◽  
Symeon Papavassiliou
Keyword(s):  
Game Theory ◽  
Reinforcement Learning ◽  
Time Management ◽  
Quality Of Experience ◽  
Social Systems ◽  
Cost Effective ◽  
Superior Performance ◽  
Operational Effectiveness ◽  
Effective Manner

This paper addresses the problem of museum visitors’ Quality of Experience (QoE) optimization by viewing and treating the museum environment as a cyber-physical social system. To achieve this goal, we harness visitors’ internal ability to intelligently sense their environment and make choices that improve their QoE in terms of which the museum touring option is the best for them and how much time to spend on their visit. We model the museum setting as a distributed non-cooperative game where visitors selfishly maximize their own QoE. In this setting, we formulate the problem of Recommendation Selection and Visiting Time Management (RSVTM) and propose a two-stage distributed algorithm based on game theory and reinforcement learning, which learns from visitor behavior to make on-the-fly recommendation selections that maximize visitor QoE. The proposed framework enables autonomic visitor-centric management in a personalized manner and enables visitors themselves to decide on the best visiting strategies. Experimental results evaluating the performance of the proposed RSVTM algorithm under realistic simulation conditions indicate the high operational effectiveness and superior performance when compared to other recommendation approaches. Our results constitute a practical alternative for museums and exhibition spaces meant to enhance visitor QoE in a flexible, efficient, and cost-effective manner.

scholarly journals Customer-Oriented Quality of Service Management Method for the Future Intent-Based Networking

2020 ◽  
Vol 10 (22) ◽  
pp. 8223
Author(s):  
Mykola Beshley ◽  
Peter Veselý ◽  
Andrii Pryslupskyi ◽  
Halyna Beshley ◽  
Marian Kyryk ◽  
...  
Keyword(s):  
Quality Of Service ◽  
Quality Management ◽  
Service Quality ◽  
Quality Of Experience ◽  
Service Management ◽  
Customer Experience ◽  
Telecommunication Networks ◽  
Service Quality Management ◽  
Management Method

The rapid development and spread of communication technologies is now becoming a global information revolution. Customers have a need for communication services, which could be flexibly configured in accordance with their Quality of Experience (QoE) requirements. Realizing the close connection between customer experience and profitability, the service provider has been placing more and more attention on customer experience and QoE. The traditional quality of service management method based on SLA (Service Level Agreement) is not sufficient as a means to provide QoE-related contracts between service providers and customers. The current SLA method is mostly limited and focused on technical aspects of QoS (Quality of Service). Furthermore, they do not follow on the network the principles and semantic approach to the QoS specification for a communication service using QoE parameters. In this paper, we propose a customer-oriented quality of service management method for future IBN (Intent-Based Networking). It is based on a new QoE metric on a scale from 1 to 5, which allows one to take into account the commercial value of e-services for customers. Based on this approach, the network configuration and functionality of network equipment automatically changes depending on customer requirements. To implement the new method of service quality management, an algorithm for routing data packets in the network was developed, taking into account the current load of the forecast path. The algorithm of billing system functioning in conditions of customer-oriented quality management in telecommunication networks has been created. To investigate the effectiveness of the proposed method of service quality management with the traditional SLA method, we developed a simulation network model with the implementation of two approaches. By conducting a simulation, it was determined that the proposed method gives an average gain of 2–5 times for the criterion of the number of customers who require high quality of experience of the service.

Real-Time Process Quality Monitoring Using Wireless Sensor-Embedded Rotary Tools for Fastening Operations

2007 ◽  
Author(s):  
Deepak T. Mohan ◽  
Jeffrey Birt ◽  
Can Saygin ◽  
Jaganathan Sarangapani
Keyword(s):  
Real Time ◽  
Lead Time ◽  
Value Added ◽  
Cost Effective ◽  
Base Station ◽  
Embedded Sensors ◽  
Optical Encoder ◽  
Effective Manner ◽  
Rotary Type

Fastening operations are extensively used in the aerospace industry and constitute for more than a quarter of the total cost. Inspection of fasteners is another factor that adds cost and complexity to the overall process. Inspection is usually carried out on a sampling-basis as a stand-alone process after the fastening process is completed. Lack of capability to inspect all fasteners in a cost effective manner and the need to remove non-value added activities, such as inspection by itself, in order to reduce the manufacturing lead time have been the motivation behind this study. This paper presents a novel diagnostics scheme based on Mahalanobis-Taguchi System (MTS) for monitoring the quality of rotary-type fastening operations in real-time. This approach encompasses (1) integrating a torque sensor, a pressure sensor, and an optical encoder on a hand-held rotary-type fastening tool; (2) obtaining process parameters via the embedded sensors and generating process signatures in real-time; and (3) detecting anomalies on the tool using a wireless mote that communicates the decision with a base station. The anomalies investigated in this study are the grip length variations as under grip and normal grip, and presence of re-used fasteners. The proposed scheme has been implemented on prototype rotary tool for bolt-nut type of fasteners and tested under a variety of experimental settings. The experimental results have shown that the proposed approach is successful, with an accuracy of over 95% in detecting grip lengths of fasteners in real-time during the process.

Efficacy of slow-release system for improving the quality of water in streams affected by mining activities

2020 ◽  
Author(s):  
Eung Seok Lee ◽  
Ryan Wolbert
Keyword(s):  
Mine Drainage ◽  
Slow Release ◽  
Cost Effective ◽  
Ecological Impacts ◽  
Polluted Water ◽  
Narrow Channels ◽  
Quality Of Water ◽  
Cost Effective Approach ◽  
Effective Manner

<p>Acid mine drainage (AMD) is considered as one of the most prevalent environmental problems worldwide and remediation of AMD-affected streams remains a major challenge due to the large affected areas, large volume of polluted water, poor accessibility, and lack of financial supports. Advanced oxidation processes (AOPs) have been widely investigated as potential remedial options for contaminated water bodies of variety of settings, such as groundwater and waste discharges. This study presents a novel cost-effective approach for utilizing AOPs on improving quality of AMD-affected streams. Slow-release cylinders and pellets were created using polymeric binder and reagent salts that release strong oxidant and alkalinity upon dissolution in water. Results of column tests demonstrated that release durations were over 29 days and up to 100% iron removal was achieved within 20 minutes. Field-scale slow-release forms were manufactured and applied to an AMD site in southeast Ohio, USA for a 29-day demonstration study. Narrow channels were constructed for installation of slow-release forms and characterization of quality and flow of mine seeps and AMD stream during low subsurface flow periods. Results of field investigations suggest that the slow-release forms can be used to rapidly remove metals from AMD, as well as improve water parameters such as pH and minimize ecological impacts of remediation within the system in cost-effective manner.</p><p> </p>

scholarly journals QoE-Oriented Mobile Edge Service Management Leveraging SDN and NFV

2017 ◽  
Vol 2017 ◽  
pp. 1-14 ◽  
Author(s):  
Shuping Peng ◽  
Jose Oscar Fajardo ◽  
Pouria Sayyad Khodashenas ◽  
Begoña Blanco ◽  
Fidel Liberal ◽  
...  
Keyword(s):  
Service Management ◽  
Mobile Network ◽  
Cost Effective ◽  
Reference Architecture ◽  
Channel State ◽  
Performance Requirements ◽  
Promising Solution ◽  
Effective Network ◽  
Lifecycle Management

5G envisages a “hyperconnected society” where trillions of diverse entities could communicate with each other anywhere and at any time, some of which will demand extremely challenging performance requirements such as submillisecond low latency. Mobile Edge Computing (MEC) concept where application computing resources are deployed at the edge of the mobile network in proximity of an end user is a promising solution to improve quality of online experience. To make MEC more flexible and cost-effective Network Functions Virtualisation (NFV) and Software-Defined Networking (SDN) technologies are widely adopted. It leads to significant CAPEX and OPEX reduction with the help of a joint radio-cloud management and orchestration logic. In this paper we discuss and develop a reference architecture for the orchestration and management of the MEC ecosystem. Along with the lifecycle management flows of MEC services, indicating the interactions among the functional modules inside the Orchestrator and with external elements, QoS management with a focus on the channel state information technique is presented.

scholarly journals An Improved In Vitro Pyrogen Test To Detect The Presence of Endotoxin Containing Bacteria Using Limulus Amoebocyte Lysate Assay From Pharmaceutical Raw Product

1970 ◽  
Vol 1 (1) ◽  
pp. 76-79
Author(s):  
Tanvir Bashar ◽  
Khondokar Mahzebin Shurovi ◽  
Sanjida Dilshad
Keyword(s):  
Pathogenic Bacteria ◽  
Raw Materials ◽  
Cost Effective ◽  
Drug Preparation ◽  
Effective Manner ◽  
Key Word ◽  
Pseudomonas Species ◽  
Lal Assay

Most of the environmental organism possess endotoxin which presence indicates the organisms are much lethal and for the purposes bacteriological quality of pharmaceutical raw products is much important. In these current study, 2 raw materials out of 10 were found to containing pathogenic bacteria Escherichia coli and Pseudomonas species in the culture medium, that indicates the raw materials were contaminated with the deadly organism. These two raw materials checked for the presence of Endotoxin and both provided positive gel clot by Limulas amoebocyte lysate (LAL) assay. Quality maintenance and assurance is the essential need of Drug preparation in pharmaceutical sector. The result ensure that Pharmaceutical industry should need to follow GMP and HACCP to minimize the contamination for improving the biological safety of the product in a cost-effective manner. Key Word: Limulas amoebocyte lysate (LAL) assay, Gram negative bacteria, endotoxin. doi:10.3329/sjps.v1i1.1812    S. J. Pharm. Sci. 1(1&2): 76-79

scholarly journals Does arthroscopic subacromial decompression improve quality of life

2015 ◽  
Vol 97 (3) ◽  
pp. 221-223 ◽  
Author(s):  
U Butt ◽  
A Whiteman ◽  
J Wilson ◽  
E Paul ◽  
B Roy
Keyword(s):  
Quality Of Life ◽  
Cost Effective ◽  
Decompression Surgery ◽  
Subacromial Decompression ◽  
Oxford Shoulder Score ◽  
Effective Manner ◽  
The Mean ◽  
Arthroscopic Subacromial Decompression ◽  
Shoulder Score

Introduction There has been a significant rise in the volume of subacromial decompression surgery performed in the UK. This study aimed to determine whether arthroscopic subacromial decompression improves health related quality of life in a cost effective manner. Methods Patients undergoing arthroscopic subacromial decompression surgery for impingement were enrolled between 2012 and 2014. The Oxford shoulder score and the EQ-5D™ instruments were completed prior to and following surgery. A cost–utility analysis was performed. Results Eighty-three patients were eligible for the study with a mean follow-up duration of 15 months (range: 4–27 months). The mean Oxford shoulder score improved by 13 points (95% confidence interval [CI]: 11–15 points). The mean health utility gain extrapolated from the EQ-5D™ questionnaire improved by 0.23 (95% CI: 0.16–0.30), translating to a minimum cost per QALY of £5,683. Conclusions Subacromial decompression leads to significant improvement in function and quality of life in a cost effective manner. This provides justification for its ongoing practice by appropriately trained shoulder surgeons in correctly selected patients.

scholarly journals A Quantitative Research on The Effectiveness of The Implementation of Supply Chain Management, Logistics & Marketing Function - The Greek Paradigm

2019 ◽  
Vol 4 (6) ◽  
Author(s):  
Joel Chiadikobi Nwaubani ◽  
Artemis Tsianta ◽  
Magdalini Zelka
Keyword(s):  
Customer Service ◽  
Quantitative Research ◽  
Cost Effective ◽  
Trade Flows ◽  
Sustainable Competitive Advantage ◽  
Marketing Function ◽  
Effective Manner ◽  
Geographical Position ◽  
Quality Of Products

In today's era of high competition and globalisation, it is an indisputable fact that customers are more demanding not only in the quality of products but also on the services provided. Consequently, the pressure on companies to discover new ways to create and provide quality to their customers has increased much more. More specifically, customer service has become a key tool for diversification, as culture and customer demands are constantly increasing. Greece stands on a strategic crossroad for the development of transportation in the greater region of Europe, Asia and Africa. Its geographical position renders it highly attractive for investments in logistics and transport to take advantage of these increasing trade flows in an efficient and cost-effective manner. In this paper, we carried out a quantitative research in Greece using a questionnaire to analyse the importance and effectiveness of the application of logistics in businesses with regard to customer service, which serve as a critical source of sustainable competitive advantage. By applying this method, a business will have its customers satisfied, thereby giving them the motivation to remain loyal and faithful to their purchasing practices within the company.

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.  

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