X

Download Augmenting Mobile 3G Using WiFi PowerPoint Presentation

SlidesFinder-Advertising-Design.jpg

Login   OR  Register
X


Iframe embed code :



Presentation url :

Home / Computers & Web / Computers & Web Presentations / Augmenting Mobile 3G Using WiFi PowerPoint Presentation

Augmenting Mobile 3G Using WiFi PowerPoint Presentation

Ppt Presentation Embed Code   Zoom Ppt Presentation

PowerPoint is the world's most popular presentation software which can let you create professional Augmenting Mobile 3G Using WiFi powerpoint presentation easily and in no time. This helps you give your presentation on Augmenting Mobile 3G Using WiFi in a conference, a school lecture, a business proposal, in a webinar and business and professional representations.

The uploader spent his/her valuable time to create this Augmenting Mobile 3G Using WiFi powerpoint presentation slides, to share his/her useful content with the world. This ppt presentation uploaded by slidesfinder in Computers & Web ppt presentation category is available for free download,and can be used according to your industries like finance, marketing, education, health and many more.

About This Presentation

Slide 1 - Augmenting Mobile 3G Using WiFi Aruna Balasubramanian Ratul Mahajan Arun Venkataramani University of Massachusetts Microsoft Research
Slide 2 - Mobile data is growing exponentially http://www.totaltele.com http://www.readwriteweb.com CISCO VNI 2010 ratul | UW | May '10 2
Slide 3 - Demand projected to outstrip capacity ratul | UW | May '10 3
Slide 4 - Is more spectrum the answer? “In light of the limited natural resource of spectrum, we have to look at the ways of conserving spectrum” -- Mark Siegel (AT&T) ratul | UW | May '10 4 http://www.nyt.com
Slide 5 - The BET of spectrum scarcity Behavioral Economic Technical Increase efficiency Reduce usage http://blogs.chron.com/ http://pro.gigaom.com/ ratul | UW | May '10 5 http://connectedplanetonline.com
Slide 6 - Augmenting Mobile 3G using WiFi Offload data to WiFi when possible We look at vehicular mobility ratul | UW | May '10 6
Slide 7 - Our work First joint study of 3G and WiFi connectivity Can WiFi usefully augment 3G capacity? Conducted across three cities Wiffler: A system to offload data to WiFi Increase offloaded data but respect app constraints Deployed on 20 vehicles ratul | UW | May '10 7
Slide 8 - Measurement study Vehicular nodes with 3G and WiFi (802.11b) radios Amherst: 20 buses Seattle: 1 car SFO: 1 car ratul | UW | May '10 8
Slide 9 - WiFi availability is low ratul | UW | May '10 9 90 12 5 Availability (%)
Slide 10 - WiFi loss rate is higher ratul | UW | May '10 10 Cumulative fraction WiFi 3G
Slide 11 - WiFi (802.11b) throughput is lower ratul | UW | May '10 11 Cumulative fraction Cumulative fraction WiFi 3G WiFi 3G Upstream Downstream
Slide 12 - Implications for offloading data to WiFi Straightforward design: use WiFi when available Offloads only 10% of the data Hurts application performance ratul | UW | May '10 12
Slide 13 - Key techniques in Wiffler Prediction-based offloading Exploit the delay tolerance of apps to increase data offloaded to WiFi Fast switching Combat poor WiFi connectivity ratul | UW | May '10 13
Slide 14 - Prediction-based offloading Delay data transfers only if that reduces 3G usage Transfer requirements: S bytes by D seconds W = Predicted WiFi capacity over future D seconds Send data on 3G only when (W < S · c) Send data on WiFi whenever available ratul | UW | May '10 14
Slide 15 - Predicting WiFi capacity Based on (# of APs) x (capacity per AP) Observation: future AP encounters depend on recent past Predict # of APs based on the last N encounters ratul | UW | May '10 15
Slide 16 - Error in predicting # of APs ratul | UW | May '10 16 Relative error N=1 N=4 N=8
Slide 17 - Fast switching Poor WiFi connectivity will hurt demanding apps such as VoIP and video streaming Send the packet on 3G if WiFi does not succeed within a threshold Link-layer retransmissions take time Losses are bursty ratul | UW | May '10 17
Slide 18 - Implementation of Wiffler ratul | UW | May '10 18 Wiffler proxy
Slide 19 - Evaluation Deployment on 20 vehicular nodes Trace-driven simulations ratul | UW | May '10 19
Slide 20 - Deployment results ratul | UW | May '10 20 Transfer size: 5MB; Delay tolerance: 60 secs; Inter-transfer gap: random with mean 100 secs VoIP-like traffic: 20-byte packet every 20 ms
Slide 21 - Trace-driven evaluation Yields results comparable to deployment Vary workload, AP density, delay tolerance, switching threshold Alternative strategies Impatient: use WiFi when available Patient: waits until the delay threshold Breadcrumbs: mobility prediction + location history Oracle: perfect future knowledge ratul | UW | May '10 21
Slide 22 - Wiffler increases data offloaded to WiFi Performance of Wiffler is comparable to optimal More complicated predictions do not help ratul | UW | May '10 22 Patient, Oracle Breadcrumbs Wiffler Impatient Fraction of data offloaded to WiFi
Slide 23 - Prediction reduces completion time ratul | UW | May '10 23 Completion time (secs) Patient Wiffler Breadcrumbs Oracle Impatient
Slide 24 - More offloading in urban centers ratul | UW | May '10 24 Fraction of data offloaded to WiFi 24% WiFi availability 12% WiFi availability
Slide 25 - Fast switching improves performance of demanding applications ratul | UW | May '10 25 % time with good voice quality Oracle Only 3G Wiffler No switching
Slide 26 - Possible extensions Reduce energy cost of searching for usable WiFi Predict what a user will access and prefetch Recommend content to users based on what is cached (courtesy Romit Roy) ratul | UW | May '10 26
Slide 27 - Conclusions Offloading to WiFi can augment mobile data transfer capacity and reduce pressure on cellular spectrum But must overcome the low WiFi availability and performance Prediction-based offloading and fast switching can tackle these challenges Offloads a third of the data if 1-min delays are tolerable ratul | UW | May '10 27
 

Frequently Asked Questions

> About SlidesFinder?

Slidesfinder is a website that allows users to upload and share their PowerPoint presentations online. It provides a platform for individuals and businesses to share their ideas and knowledge through presentations, and for others to view and download these presentations for educational or professional purposes.
Slidesfinder offers a wide range of presentation topics and categories, including business, education, science, technology, health, and more. Users can also search for presentations using keywords, tags, or by category. The website provides tools to create professional presentations with rich media, animations, and graphics.



One of the key features of Slidesfinder is its user-friendly interface, which allows users to easily upload, view, and share presentations. Users can also embed their presentations in their websites or blogs using the website's embed code feature.
Slidesfinder also offers premium services, such as the ability to create private presentations and to download presentations in high-quality formats. However, the basic features of Slidesfinder are free to use, making it accessible to anyone who wants to share their ideas and knowledge through presentations.

> How do I register with SlidesFinder?

Go to registration page (you can see signup link on top of website page) https://www.slidesfinder.com/signup . If you have facebook/gmail account them just click on SIGN IN WITH FACEBOOK OR SIGN IN WITH GOOGLE button, by this you will be a registered member of slidesfinder without filling any form, required detail automatically will be fatch from your account. If you do not a Facebook account, then click on "Signup". Fill all required fields and you will be a registered member of slidesfinder.

> Is slidesfinder account confirmation is mandatory?

Yes it is mandetory to active your account to login.

> Do I need to signup/login on SlidesFinder before uploading a PowerPoint presentation?

Yes, you need to login with your account before uploading presentation. Your username will be displayed on your uploaded presentation. Your registered email id is needed for sending your stats of uploaded presentation.

Slidesfinder is a sharing website for PowerPoint presentations search and share. Find your interest in the form of powerpoint presentations on slidesfinder and save your valuable time . On Slidesfinder you get presentations from our huge library of professional ppt presentations. We believe in making your search INFORMATIVE and FUN. Find your best ppt presentation from a pool of PowerPoint presentations stacked under important industry categories like business & management, heath & Wellness,eduction & training etc. We provide unique informative PowerPoint presentation for marketers, presenters and educationists. These professional PowerPoint presentations are uploaded by professionals from across numerous industry segments.These ppt presentations are available for FREE download.

Not just finding your interest, but facilitate you broadcast your interest. We have created this platform for easy sharing of PowerPoint presentations, ensuring that these presentations get maximum exposure. Create your slidesfinder account and upload PowerPoint presentations for free, share on social media platforms and BUILD YOUR CROWD WITH PRESENTATION !!

The Great Buddha says, "Share your knowledge.It’s a way to achieve immortality"! So, start sharing knowledge and we are here to make that immortal !!

© 2013-2024 SlidesFinder. All rights reserved.

Re-productivity of content are not allowed. Without prior written permission from author, commercial use of any content is illegal.