Sri Chandrasekharendra Saraswathi Viswa Mahavidyalaya
Question
Asked 3 August 2019
What are performance metrics of VoWiFi (Voice Over WiFi) Using IMS (IP Multimedia Subsystem) in 4G Mobile Networks?
VoWiFi means that radio waves is used in wireless networks to exchange voice instead wired network. It enables VoLTE subscribers to access EPC network using WiFi register with IMS network. So that, they can use IMS services as voice calls, SMS, and other supplementary services and Subscribers can use WiFi to access EPC network when LTE is unavailable. VoWiFi is needed for Coverage Enhancement, If there is an area which has poor coverage but WiFi is available, Competence Enhance, Operators are willing to provide new services, Customer Retention, Operators provide free or unlimited services to attract more user, Saving Roaming Cost , Operators has WiFi roaming agreement in a suitable market, Less cost for operators, No need to build BTSs, In VoWiFi the caller and callee do not need to have the same application to talk to each other in contrast to OTT. The callee does not need to have internet connection to accept the call, and VoWiFi is seamless, handover is very simple and smooth VoWiFi has only three available choices, Untrusted access network and Trusted access network, IMS direct access, VoWiFi subscribers access a WiFi network, use the ePDG to attach to an EPC network, and then register with an IMS network, ePDG and AAA server is the new network elements for VoWiFi solution, all traffic is secured by AAA server and IP sec protocol, it depends mainly on VoLTE solution.
Papers:
Priyanka Luthra, M.Tech CSE, D.A.V.I.E.T, Jalandhar, Manju Sharma Associate Professor IT D.A.V.I.E.T, Jalandhar, “Performance Evaluation of Audio Codecs using VoIP Traffic in Wireless LAN using RSVP,” International Journal of Computer Applications (0975
– 8887) vol.40– No.7, February 2012.
All Answers (2)
Hi,
Voice over Wi-Fi (VoWiFi) is a term typically employed to describe the delivery of commercial telephony services using Voice over IP (VoIP) technologies from mobile devices connected across Wi-Fi.
The performance metrics are:
- Accuracy
- Speed
- Efficient
The Institution of Engineering and Technology
I disagree, for Voice services, the only valid criterion is M. O. S. as used in any ITU-T voice quality assessment. Typically you need a user lab, and sessions with 8-10 human subjects, rating between 1 and 5 what they hear (which is a representative sample of spoken sentences, under different channel conditions). If you get 4 that's good, and closer to 5 even better
Similar questions and discussions
Accessible Learning for All
I WOULD APPRECIATE THAT YOU PARTICIPATE TO THE DISCUSSION:
THIS IS AN OVERVIEW:
How to increase our learning considering The impact of artificial intelligence? By Amin Elsaleh and Sangat Naik Positioning of the D.I.S.C.E.L. in relation to the initiatives accompanying the digital revolution
PREAMBLE The D.I.S.C.E.L. is largely explained by the technology watch carried out by two PhD students from the University of Paris VI in 2010; Their study positions our project in relation to the various research carried out in particular in the United States. It shows its complementarity via the innovative concept SPDF (Standard Process Description Format) created by the author of this article. Part I How to position our D.I.S.C.E.L project? With the excerpts below, the link is very strong between our project and “serious games” a fashionable theme, but whose different interpretations bring it much closer to video games than to the “e-learning” of the years 2010-2015. By reading the references indicated in this summary, I realized that we can tackle several Master's subjects to deepen our project and lead to industrial tools. Automated process management on an online server with intelligent document-enabled commands is an effective way to engage all types of users without requiring advanced computer skills. PART 2 How to increase our learning considering The impact of artificial intelligence, especially the chat GPT , on higher education? Sangat Naik Incorporating AI systems like ChatGPT in higher education brings both potential benefits and challenges. One primary concern is the accuracy and reliability of the AI-generated responses. As with any AI system, ChatGPT may occasionally provide incorrect or biased information, leading to potential inaccuracies in educational content. Furthermore, the lack of contextual understanding could hinder its ability to grasp complex concepts or offer in-depth explanations necessary for higher education.[1] PART III Reminder “It's important for higher education institutions to consider the unique opportunities and challenges presented by AI programs like ChatGPT and strike a balance between leveraging the benefits of these technologies while addressing their limitations and ensuring ethical use in academic settings." Objectives Our target is to develop an appropriate standard SPDF (Standard Process Description Format) to produce a universal engine. Rationale: ChatGPT should be supported by a standard whether or not we call it SPDF or something else, the target is to produce a universal framework for industrial engines not only to be used for higher education but also to produce new generation of servers. PART IV 17122024 AI’s computing gap: academics lack access to powerful chips needed for research Survey highlights disparity between academic and industry scientists’ access to computing power needed to train machine-learning models. By Helena Kudiabor
DISCUSSION https://www.academia.edu/s/b053744cacIn conclusion, while ChatGPT and similar AI programs offer unique opportunities for higher education, institutions must be aware of their limitations and challenges. By striking a balance between leveraging the benefits of AI technologies and addressing their shortcomings, while ensuring ethical use, higher education can fully embrace the potential of AI as a powerful learning tool for students and educators alike.
Someone has ground truth information (annotations) of PETS2001 data set?
The link provided http://www.cvg.cs.rdg.ac.uk/PETS2001/ANNOTATION/ is not working. The PETS (Performance Evaluation of Tracking and Surveillance) data sets are hosted by University of Reading. I trying to contact the Professors that manage the data sets but they did not reply yet.
Related Publications
Perkembangan teknologi informasi dan komunikasi memudahkan setiap orang mempeoleh informasi dalam berbagai hal. Salah satu contohnya bagi yang membutuhkan informasi terjemahan bahasa dapat mengakses melalui internet, yang sebelumnya hanya menggunakan kamus. Tetapi tidak semua memiliki fasilitas untuk akses internet dengan mudah, terlebih di daerah...
Configurations providing a rolling sequence model for a user interface over SMS for an interactive system are described. An SMS server can implement the rolling sequence model in which a number from a sequence of numbers (e.g., a block of numbers) is assigned to a user session. A subsequent number from the sequence of numbers is assigned for each s...