1. Understanding Wi-Fi Direct in Windows 8
10/13/2018 8:34 PM
HW-329T
Understanding Wi-Fi Direct in Windows 8
Yatharth Gupta
Program Manager
Microsoft Corporation
Mitesh Desai
Developer
Microsoft Corporation
© 2010 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

2. Agenda What is Wi-Fi Direct ?
Wi-Fi Direct experiences built in to Windows 8
Optimizing devices for Wi-Fi Direct
You’ll leave with this session with
Understanding of how Wi-Fi Direct works in Windows
How to build Wi-Fi Direct devices that work great with Windows 8

3. Wi-Fi Direct offers high bandwidth wireless connectivity between your device and PCs

4. What is Wi-Fi Direct ? Is a peer-to-peer connectivity technology
Provides a secure, wireless connection between two devices
Does not require a Wi-Fi router or joining a Wi-Fi network
In Windows 8 Wi-Fi Direct
Is integrated into the Wi-Fi stack & the Device Experiences
Builds on existing Wi-Fi hardware
Allows concurrent connection to Internet & Devices
Is optimized for power savings

5. Wi-Fi Direct experiences in Windows 8
Devices : Streaming Media to Devices
Simple setup
High bandwidth connection
Apps : Communicate over Wi-Fi Direct
Leverages proximity API
No additional setup needed

6. Play To over Wi-Fi Direct
10/13/2018 8:34 PM
demo
Play To over Wi-Fi Direct
Connecting a Digital Media Render over Wi-Fi Direct and playing content to it
© 2010 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

11. What did we just show ?

12. What did we just show ?
Consistent pairing experience, users don’t need to change behavior specific to technology
Automatic detection & installation of the PlayTo Device after Wi-Fi Direct pairing
Choice of security methods, devices manufacturers opt for PIN or push button
Easy to play media to devices

13. Apps can connect over Wi-Fi Direct
10/13/2018 8:34 PM
demo
Tap-n-Go
Apps can connect over Wi-Fi Direct
© 2010 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

14. What did we just show ? Simple tap to setup a connection
App connects with another instance of itself
Connection is managed by Windows

15. Tap-n-Go Proximity API for apps
Apps have the flexibility of indicating a transport, automatic selection by default
APIs return a socket, app developer does not need to manage Wi-Fi Direct semantics

16. Building great Wi-Fi Direct devices for Windows 8

17. Building great Wi-Fi Direct devices
Understand and implement the industry-standard with the right set of features
Add support for the extended attributes
Understand how Wi-Fi Direct works in Windows 8

18. How Wi-Fi Direct works in Windows 8
find
pair
connect + + +

19. Find When do we find ? How do we find ? Key considerations
Intent driven device discovery
How do we find ?
Wi-Fi Direct device discovery protocol
Extended attributes help identify the device better
Key considerations
User is waiting for the device to be found

20. Pair When do we pair ? How do we pair ? Key Considerations
Once the user has selected the device, we start pairing
How do we pair ?
Windows 8 selects a pairing model based on system resources
Extended attributes enable a better experience
Key Considerations
Devices are persistent
Vertical pairing

21. Pair One physical device, multiple logical devices
Set top box
One physical device, multiple logical devices
User expects to pair the with the device once
Two extended attributes
Container ID : Used to represent the physical piece of plastic
Vertical Device ID : Used to represent logical devices in the piece of plastic
DLNA Device
Wi-Fi Direct Device

22. Connect When do we connect ? How do we connect ? Key Considerations
On demand
How do we connect ?
Windows invites the device to reconnect
Key Considerations
Multiple Wi-Fi Direct devices can connect to Windows
Dynamic address assignment
Not an explicit operation

23. Recap

24. Summary
Wi-Fi Direct offers wireless, high bandwidth connectivity your PCs and devices
Concurrent connections to devices and Internet in Windows 8
Wi-Fi Direct in Windows 8 builds on existing hardware
Windows 8 implementation enables a great experience for Play To & Tap-to-Share

25. Related sessions
[HW-177T] Building great networked media devices for Play To apps
[HW-269T] Designing systems and developing drivers for NFC
[HW-342T] Understanding Wi-Fi networking in Windows 8
[HW-286T] Simplifying wireless and network device discovery and pairing
[APP-408T] Integrating with the Windows device experience
[PLAT-270T] Connecting and sharing with near field communication

26. Further reading and documentation
Whitepapers:
Vertical Pairing
Play To & Media Sharing for Metro Style Apps
Developer Center:
Wi-Fi Direct
Windows Hardware Development
Streaming media to devices using PlayTo
Contact Info:

27. thank you Feedback and questions http://forums.dev.windows.com
Session feedback

28. 10/13/2018 8:34 PM
© 2011 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.
© 2011 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.