1. Wireless Communication and Networks
Applications of Wireless Communication
Wireless Communication Technologies
Wireless Networking and Mobile IP
Wireless Local Area Networks
Student Presentations and Research Papers
Understanding Wi-Fi networking in Windows 8

2. Understanding Wi-Fi networking in Windows 8
5/21/2018 1:37 AM
HW-342T
Understanding Wi-Fi networking in Windows 8
Drew Baron
Lead Program Manager
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.

3. Agenda Wi-Fi power, performance and experience improvements
Connected Standby
Wi-Fi device connectivity
You’ll leave knowing:
How to create high-quality Wi-Fi hardware and drivers that take advantage of new Windows 8 features
How Windows 8 enables connectivity experiences for new form factors and customer scenarios

4. Trends shaping wireless landscape
Explosion of form factors
PCs that are always connected to the internet
Ubiquitous Wi-Fi ability on PCs
On-battery is becoming a norm

5. Connecting with Windows 8
Simplified User Experience Smart about Networks Robust platform for differentiation

6. Low-power, fast and simple Wi-Fi connectivity

7. Power improvements in Windows 8
Windows 8 will reduce power consumption from Wi-Fi
Wi-Fi devices are more autonomous:
Automatic power save mode
Reduction in host CPU interrupts
Packet coalescing
Wi-Fi Service
Wi-Fi Service
Driver
Driver
Wi-Fi Device
Wi-Fi Device

8. Instant Connect
Windows 7
Windows 8
People expect to be able to pick up a device and use it immediately
Innovating with hardware
Network list offloading
Focus very precisely on software paths
Optimizing
Reducing timing
Identifying
Wi-Fi Service
Wi-Fi Service
Driver
Driver
Wi-Fi Device
Wi-Fi Device

9. demo
Instant Connect

10. Greatly reduced connection time+ + +
seconds
© 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. Experience improvements
Customers don’t want to think about getting connected they want to be connected
Windows 8 gracefully transitions between various networking technologies
Windows 8 includes integrated Radio Management

12. Connecting to the right network Radio Management
demo
Connecting to the right network Radio Management

13. Connected Standby

14. Connected Standby New Windows power state available on PCs
The PC’s screen is off, but the device remains in a very low idle state
The network adapter maintains a connection to the network
Metro style apps continue to receive live tile updates and toast notifications
Background Tasks and Push Notifications enable customers to receive real-time communication, such as , IM and VoIP calls

15. Wi-Fi offloading for Connected Standby
Device offload enables Connected Standby
Keep network connected while CPU/SoC is in deepest idle state
Achieved by offloading functionality to Wi-Fi device
Wi-Fi devices support wake patterns and power-save capabilities
Wi-Fi driver does auto-power save mode (PSM)
Wake patterns used for Push Notifications
Windows 8 PC
Core
Chipset/SoC
Memory
Wi-Fi
Storage

16. Push Notifications during Connected Standby
Metro style real-time apps can receive push notifications while in Connected Standby mode
Real-time apps register TCP connections to servers via RTC Trigger APIs
Windows 8 helps ensure network connection to servers aren’t dropped
Servers send notification packets to clients when their attention is needed
Very energy efficient!
Messaging
SMS … !
Windows 8
NIC
Network
Server !

17. Wi-Fi Direct

18. 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
Builds on existing Wi-Fi hardware
Allows concurrent connection to internet & devices
Is optimized for power savings
Supports native scenarios such as Play To and Proximity

19. Windows Certification for Wi-Fi devices

20. Certification for Wi-Fi
Scenario
Feature
Certification for Wi-Fi
Connected Standby
Wake, Network List Offload
Windows 8 creates new customer expectations for Wi-Fi-based experiences
Certification for Wi-Fi enables you to deliver high-quality hardware and drivers
Developed and tested with feedback from partners
Certification for Wi-Fi is tailored for systems that support Connected Standby
Instant Connect
Network List Offloading
Power
Interrupt Reduction
Power
Packet Coalescing
Power
USB Selective Suspend
Power
Wi-Fi Auto Power Save Mode
Flight Mode
Radio Management
Play To, Proximity
Wi-Fi Direct
Basics
802.11n, w (PMF – Enterprise security)

21. Recap

22. In summary
Windows 8 connects to Wi-Fi networks quickly and efficiently
Windows 8 enables connectivity while in Connected Standby
Wi-Fi direct on Windows 8 delivers new device connectivity experiences

23. Call to action
Provide high quality networking hardware and drivers that support new Windows 8 features
Work with Wi-Fi inbox team to get your driver inbox
Use Windows Certification for Wi-Fi to ensure quality, compatibility and interoperability for drivers
Use Windows Update for driver serviceability

24. Related sessions
[732] Connecting Windows 8 to mobile broadband and Wi-Fi networks
[331] Understanding mobile broadband and connection Management in Windows 8
[329] Building great Wi-Fi Direct Devices
[456] Understanding Connected Standby
[566] Networking for Connected Standby
[260] Windows Certification: Improvements to the Logo Program

25. Further reading and documentation
Wi-Fi Direct (WFD) Reference
Windows Hardware Dev Center
Windows Dev Center
Contact info –

26. 5/21/2018 1:37 AM
© 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.