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UltraWide Band (UWB) Architecture Preview. Outline. Microsoft’s Participation and Vision Supported Protocols currently planned for UWB Wireless USB IP Synergy between IHVs/ISVs and UWB Team Call to action for partners Summary. UWB Overview . FCC ruling permits UWB spectrum overlay .

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Presentation Transcript
  • Microsoft’s Participation and Vision
  • Supported Protocols currently planned for UWB
    • Wireless USB
    • IP
  • Synergy between IHVs/ISVs and UWB Team
  • Call to action for partners
  • Summary
uwb overview
UWB Overview

FCC ruling permits UWB spectrum overlay

  • UWB is presently approved for use only in the US
    • Regulatory activity underway in Europe, and Asia
  • Consistency “rules of the game”
    • Open standardization is critical for worldwide market adoption

UWB Throughput

  • High speed at short range
    • 480 Mb/s at ~3m
    • Does not penetrate walls
  • Scaleable performance (Moore’s Law radio)
uwb in the digital home
UWB in the Digital Home

Local high throughput delivery

Wired / Wireless

Wired /Wireless

Wired / Wireless

Long range delivery

wired & wireless (backbone)

Wired / Wireless

Wired / Wireless

UWB delivers high speed interconnectivity at low power/proximity

uwb project in windows
UWB Project in Windows
  • Description
    • Create infrastructure to build on Microsoft’s huge investment in USB and IP class drivers over a new medium/transport
  • Project Goals
    • Reuse existing class drivers unchanged (except USB ISOCH)
    • Minimal changes to existing USB and IP core stack
    • Simple association model
    • High security (make it just as secure as cable scenarios)
    • Allow IHVs to write a single function driver on top of the appropriate PALs for wired and wireless scenarios
    • Class drivers should be developed on top of PALs. No new kernel/user APIs for UWB plan to be exposed
uwb protocol relationships on windows platforms
UWB Protocol Relationships on Windows Platforms


High customer interest

Low customer interest

Items with ‘*’ are being defined in WiMedia

Other Applications

Wireless 1394

Convergence Layer*

Wireless USB

IP (WiNet*)



Protocol Abstraction Layer (PAL) - Various technology solutionsrunning over the common platform

Common UltraWide Band Radio Platform

wireless usb topology overview
Wireless USB – Topology Overview


External USB Hub



Wireless USB protocol

Host Adapters

Wireless Storage

Device Adapter



association hard scenarios
Association – HARD Scenarios
  • Association Is One Of The Key Elements To UWB’s Success
  • Hard Scenario #1 – HID
    • Keyboard/Mouse/Human Input Device
  • Hard Scenario #2 – Far apart
    • Device and host are not physically close enough to use a cable
    • Device and host are heavy and not convenient to move them
  • Hard Scenario #3 – Headless hosts
    • How to associate a device with a headless server (no monitor for showing the PIN/user entry, etc.)
  • Hard Scenario #4 – OEM Install
    • Pre-associating devices at OEM (during OS setup/upgrade).
  • Hard Scenario #5 – OS + BIOS / Multiple OS.
    • Associating a device with a host in such a way that the device is also associated with the same PC/radio in BIOS mode.

Solve the hard problems and the rest are no-brainers!!

windows connect now
Windows Connect Now

And the solution is ……

The Windows Networking and Device Connectivity Platform

  • Effortless
    • “It Just Works” experience for users
    • Simple protocols, APIs and DLLs for partners and developers
  • Secure and Reliable
    • Built-in security to enable higher user confidence
    • Make reliability a fundamental part of the solution
  • State of the art
    • Continue enabling compelling new user experiences
wireless host side architecture
Wireless Host Side Architecture
  • UWB radio supported on these buses:
    • PCI (or PCIe) based solution
      • Can go in addin card slot
      • Cardbus or ExpressCard possible
    • Wired USB dongle
      • Cabled ‘base station’ variety
      • Small ‘key’ solutions
  • Microsoft preferred PALs required on UWB host

side radio

    • WUSB
    • IP
role of convergence management layer
Role of Convergence / Management Layer

Bandwidth management and arbitration

Between PALs

Inform other hosts to optimize bandwidth

Changing channels if congestion

Handling PCI resources

Function or PAL enumeration

Beaconing and Topology management

device wire adapter
Device Wire Adapter


  • Looks like a wireless hub
  • Great for scenarios like wireless port replicators
  • Single chip implementations can be integrated directly into devices
list of new kernel files
List of New Kernel Files


Yellow = New Component

Grey = Existing Component

hardware ids for uwb pals
Hardware IDs for UWB PALs
  • PCI IDs for UWB PAL PDOs
    • Hardware IDs
    • Compatible IDs
    • Similar in style toPCI device ID
  • USB IDs for UWB PAL PDOs
    • Hardware IDs
    • Compatible IDs
    • Similar in style to USB device IDs

Microsoft plans to match on IDs highlighted in BOLD

industry and windows compliance programs
Industry and Windows Compliance Programs
  • Compliance programs
    • Industry – Being defined in WiMedia and USB-IF
    • Microsoft – Windows Logo Program
  • UWB
    • Focus on certified silicon
    • The PAL used by the radio should be compliant with Microsoft supported PALs.
  • Association
    • There's a lot of work/innovation going on in this space still
    • Use Microsoft supported association models – Windows Connect Now
  • Wireless USB is likely to affect wired USB devices
    • We may require all wired USB devices be tested downstream of a DWA
    • Isochronous devices (connected via WUSB) may need some software changes
  • Timelines
    • Initial Windows Logo Program requirements coming shortly
    • Logo program validation tools to follow release of drivers
windows logo program requirements
Windows Logo Program Requirements
  • Host side radios
    • Must be compliant with either WHCI or HWA specifications (and related specifications)
    • Must support isoch transfers
  • Device wire adapters
    • DWA's with exposed ports need to provide 500ma on all ports
    • Must support isoch transfers
    • Possible requirements around number of RPipes
  • Devices
    • WUSB devices must have a unique serial number
    • Devices must be compatible with both HWA and WHCI hosts
    • No plans to logo non-beaconing devices
industry compliance plans
Industry Compliance Plans
  • Applications own compliance testing
    • Define requirements/assertions
    • Run workshops
    • Allow logo usage
  • WiMedia provides turn-key compliance solution for PHY,MAC, and radio cooperation
  • Application compliance will incorporate WiMedia tests forlogo requirements
  • Timelines
    • Test documents and testsdeveloped 2H05
    • First compliance workshops in 1H06



Cooperation policy


WiMedia UWBPhy

  • Industry specs are nearly done and prototype hardware is available to IHVs
  • Microsoft committed to providing beta drivers to early IHVs for validation purposes
  • Training and tools are coming
    • Developer Conferences
    • Peripheral Development Kits
    • Interop Labs
call to action
Call to Action
  • IHVs
    • Share UWB plans with Microsoft and come up with a great Go-To-Market Strategy
    • Send sample devices to Windows UWB team for testing/self-hosting
  • Participation
    • Attend Wireless USB Developers Conference on May 24-25 in San Jose, to learn more on WUSB
    • Participate with Microsoft on beta opportunities.Send us your feedback
  • Test wired USB devices on
    • DWA + WHCI/HWA Scenarios
    • All platform architecture (x86, x64, Itanium)
  • Microsoft Resourceswww.microsoft.com/whdc
  • MSDN Newsgroups
    • Windows Development  Device Drivers
    • Windows Development  Windows DDK
  • Industry Resources



  • Technical Papers
    • FAQ on UWB developer.intel.com/technology/usb/spec.htm
    • Intro to WUSBwww.usb.org/WUSB
additional resources
Additional Resources
  • Email: UWBFB @ microsoft.com – To answer questions from hardware vendors
  • Web Resources:
    • Microsoft Site: http://www.microsoft.com/whdc
    • Industry Sites:
      • http://www.usb.org/wusb
      • http://www.wimedia.org
      • http://www.intel.com/go/uwb or http://www.intel.com/go/wusb

© 2005 Microsoft Corporation. All rights reserved.

This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary.