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rick merritt
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Is D2D what you need?
rick merritt   7/8/2014 10:16:43 AM
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Is a devcie-to-device spec what you need? I note UPnP is working on a device to cloud spec.

baybal
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Re: Is D2D what you need?
baybal   7/9/2014 5:07:47 AM
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>Is a devcie-to-device spec what you need?
>I note UPnP is working on a device to
>cloud spec.

There are 10+ communication protocols in active development targeting iot applications. They are all very similar in technical aspects: plaintext protocols for structured data with extra features. Such protocols are only a common communication fabric, they do not define any schema for transmitted data or objects. 

Say, there are 10 different smart thermometers from different brands that can see each other on the network, send data to each other, but the temperature data they send will be in 10 different incompatible formats.

dougwithau
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XKCD on the new standard
dougwithau   7/9/2014 12:17:28 PM
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XKCD on Standards

http://xkcd.com/927/

y_sasaki
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Re: Is D2D what you need?
y_sasaki   7/9/2014 12:38:47 PM
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Indeed, all you have to do is define the object name and object type then wrap it in some kind of format. You can do it in ASN.1(SNMP), TLV(RPC), XML(UPnP/SOAP), JSON(AJAX) or D-BUS(AllJoyn)... there are hundreds way to do the same thing. You can even invent new object schema easily and engieers love to invent stuff, even though there are lots of well-defined, implemented, tested then outdated, forgotton standards.



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As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.

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