Jan 19, 2021 Microsoft Mouse and Keyboard Center is an essential utility for owners of Microsoft keyboards and mouse devices mainly for the reason that it allows you to customize the function and settings of the various buttons. 5/30/2019; 2 minutes to read; In this article. The Miracast over Infrastructure protocol provides the ability to transmit a multimedia data stream over a local wireless network instead of Wi-Fi Direct (WFD). Microsoft’s Sculpt Comfort Mouse is the desktop alternative to the Sculpt Mobile, and it makes a great companion to the Sculpt Comfort keyboard that Microsoft shipped last fall.
The Miracast over Infrastructure Connection EstablishmentProtocol specifies a connection negotiation sequence used to connect, indicatereadiness to connect, and disconnect from a Miracast over Infrastructureendpoint. This protocol also specifies the Miracast over InfrastructureInformation Element (IE), which helps identify Miracast receivers (sinks) thatcan support a Miracast session over an infrastructure link (as opposed to aWi-Fi Direct link).
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Date | Protocol Revision | Revision Class | Downloads |
|---|---|---|---|
5/30/2019 | 3.0 | None | PDF | DOCX | Diff |
Previous Versions
Date | Protocol Revision | Revision Class | Downloads |
|---|---|---|---|
9/12/2018 | 3.0 | Major | PDF | DOCX | Diff |
3/16/2018 | 2.0 | Major | PDF | DOCX | Errata | Diff |
6/1/2017 | 1.1 | Minor | PDF | DOCX | Diff |
3/16/2017 | 1.0 | New | PDF | DOCX |
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-->The Miracast over Infrastructure protocol provides theability to transmit a multimedia data stream over a local wireless networkinstead of Wi-Fi Direct (WFD).The process of such transmission is called 'projection'.
A Miracast over Infrastructure session involves thefollowing principals.
Miracast Source: A device that sends audio and videostreams to the Miracast Sink. This device is sometimes called a'sender'. Optionally, this device can also receive input signals fromthe Miracast Sink.
Miracast Sink: A device that receives audio and videostreams from the Miracast Source. This device is sometimes called a'receiver'. Optionally, this device can also send input signals backto the Miracast Source.
The following diagram illustrates the logical flow ofestablishing a Miracast over Infrastructure session, including successful andunsuccessful outcomes. For further details, see Protocol Details (section 3).
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Figure 1: A Miracast over Infrastructure session
A Miracast over Infrastructure session consists of threephases: device discovery, host name resolution, and projection.
The device discovery phase starts with a Miracast Sourcetrying to find devices capable of performing the role of Miracast Sink. EachSink advertises its capabilities by transmitting Beacon and ProbeResponse frames that might include WSC IE Vendor Extensionattributes (section 2.2.8).
A Sink is selected from those discovered; for example, byasking a user to pick one. If the Vendor Extension attribute from the selectedSink does not indicate support for Miracast over Infrastructure, the Sourcefalls back to using standard Miracast [WF-WSC2.0.2].
If the Vendor Extension attribute contains one or more IPAddress attributes (section 2.2.8.5), theSource optionally skips the host name resolution phase and proceeds to theprojection phase.
In the host name resolution phase, name resolution isperformed on the name in a Host Name attribute (section 2.2.8.2)in the Vendor Extension attribute. If name resolution is unsuccessful, theSource again falls back to using standard Miracast.
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In the projection phase, the Source attempts a connection tothe Sink for sending Miracast over Infrastructure messages (section 2.2).Finally, the Sink establishes a connection with the Source for streamingmultimedia data. If that connection cannot be established, the entire processfails.