1. Mobile Content Sharing Utilizing the Home Infrastructure
Petros Belimpasakis, Shahzad Akhtar Awan and Eleni Berki
Nokia Research Center, University of Tampere, Finland
February 19, 2019
Petros Belimpasakis | Nokia © 2008

2. Introduction
Cameras in mobile phones have totally changed the way people capture their personal experiences
Camera phone sales have significantly exceeded Digital Still Camera (DSC) sales
People have the need to share their self-generated content with family & friends
On-line sharing services have been very successful on the Internet
February 19, 2019
Petros Belimpasakis | Nokia © 2008

3. Content sharing use cases
February 19, 2019
Petros Belimpasakis | Nokia © 2008

4. Our use case
Focus on group communication, in the context of content co-creation at social events
February 19, 2019
Petros Belimpasakis | Nokia © 2008

5. A realistic example of today…
Four friends go skiing…
All of them use their camera phone to capture images and videos during the day
At the end of the day, everybody has captured a lot of content on his/her mobile device
When they get back home, they are so tired and bored of sending their content to the others. They next day one might do so, but the rest forget…
February 19, 2019
Petros Belimpasakis | Nokia © 2008

6. The Problems
Once the “moment has passed” (e.g. the moment of capturing the content), people don’t really bother/forget/are bored to share their content with others
Some people that have a camera phone, don’t even move their captured images out of their phone. They just delete them when the memory is full
MMS is expensive and with many limitations. Uploading, from mobile, to on-line services is usually complicated, privacy issues…
February 19, 2019
Petros Belimpasakis | Nokia © 2008

7. What we were after…
A solution that would allow many friends to participate in a “common sharing session”
Mobile devices to create an alliance, for some time
Content captured during that time, would be automatically marked for sharing with the rest of the group
We wanted to utilize the home infrastructure (media servers & broadband connection)
Not “locking” the users to semi-trusted external services
February 19, 2019
Petros Belimpasakis | Nokia © 2008

8. Our concept The four friends get together February 19, 2019
Petros Belimpasakis | Nokia © 2008

9. Our concept
One of them, creates (using a special application) a “common sharing session” for, e.g. 5 hours
That means that all content generated for the next 5 hours will be automatically shared with other people
February 19, 2019
Petros Belimpasakis | Nokia © 2008

10. Our concept
His home server would be automatically notified about this new “common sharing session”
The server (e.g. UPnP AV server) allocates recourses and creates a new container for the media
February 19, 2019
Petros Belimpasakis | Nokia © 2008

11. Our concept
Then, an invitation to participate is easily sent to the rest of the friends
E.g. over Bluetooth
The invitation includes the method for remotely accessing the home server and the required credentials
The rest of the people accept
February 19, 2019
Petros Belimpasakis | Nokia © 2008

12. Our concept
For the next 5 hours, all the content that the devices create is marked for automatic sharing
February 19, 2019
Petros Belimpasakis | Nokia © 2008

13. Our concept At the end of the day, everybody goes back at their home
February 19, 2019
Petros Belimpasakis | Nokia © 2008

14. Our concept
Automatically, each device connects to the Internet, using their respective home WLAN
They all transfer, asynchronously, their content to the home server of the person that created the “common sharing session”
using the connection details included in the original invitation
Silent/ambient
Internet
February 19, 2019
Petros Belimpasakis | Nokia © 2008

15. Our concept
Over the free home connection, all the content is transferred to a common location.
Internet
February 19, 2019
Petros Belimpasakis | Nokia © 2008

16. Our concept
Devices, can now access all the (common) content, that has been uploaded
At the same time, they can subscribe for future notification updates
Using RSS/Atom for example
Internet
February 19, 2019
Petros Belimpasakis | Nokia © 2008

17. Our Implementation Client side: S60 Stand-alone application
Session Initiator Screens
February 19, 2019
Petros Belimpasakis | Nokia © 2008

18. Our Implementation Client side: S60 Stand-alone application
Invited user screens
February 19, 2019
Petros Belimpasakis | Nokia © 2008

19. Our Implementation Client side: S60 Stand-alone application
Users browsing content
February 19, 2019
Petros Belimpasakis | Nokia © 2008

20. Our Implementation On home side
Server software, behaving as a “proxy” between HTTP server & UPnP AV
It would accept Atom/HTTP post requests, and would save data in a standard UPnP AV Server
Atom protocol also allowed to export content as web feeds
February 19, 2019
Petros Belimpasakis | Nokia © 2008

21. A bit more protocol details
February 19, 2019
Petros Belimpasakis | Nokia © 2008

22. A bit more protocol details
Request creation of accounts for secondary users
February 19, 2019
Petros Belimpasakis | Nokia © 2008

23. A bit more protocol details
Accounts created and credentials passed back, for every user (username, pass, DNS address, path)
February 19, 2019
Petros Belimpasakis | Nokia © 2008

24. A bit more protocol details
A standard UPnP AV server is found and utilized
February 19, 2019
Petros Belimpasakis | Nokia © 2008

25. A bit more protocol details
Those are then send to every user (e.g. Bluetooth, or SMS)
February 19, 2019
Petros Belimpasakis | Nokia © 2008

26. A bit more protocol details
Atom POST over HTTP
over SSL
February 19, 2019
Petros Belimpasakis | Nokia © 2008

27. A bit more protocol details
Atom POST
Converted to UPnP AV
February 19, 2019
Petros Belimpasakis | Nokia © 2008

28. Open issues / Next steps
Content management and ownership issues
Home “server” required now, so not very realistic for average users
But very promising if implemented as part of home gateway/router
Moving content to some other location (e.g. other home, or on-line), how to handle this?
Real user trial – actual user acceptance
February 19, 2019
Petros Belimpasakis | Nokia © 2008

29. Conclusions Main target group:
Our solution is mainly aimed for friends, families and relatives who want to share their content on specific events. e.g. wedding, party, etc
Benefits:
Automated: Only accept the invitation (1 click), and all the rest is taken care of!
Cost effectiveness: Utilize home WLAN connection for uploads
Privacy/Security: Content is stored in a trusted location (home)
Linking content from multiple users: All content in one location
February 19, 2019
Petros Belimpasakis | Nokia © 2008

30. Thank you…
February 19, 2019
Petros Belimpasakis | Nokia © 2008