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Bluetooth Smart Gets Smarter

Version 4.1 enhances IP support
12/4/2013 03:12 PM EST
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RichQ
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Backward compatibility?
RichQ   12/4/2013 3:28:54 PM
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First question I would have is on the new Bluetooth's ability to work with older versions. It's not helpful to adopt the new version for designing an IoT device if the bulk of the smartphone installed base cannot work with them. If there is no backward compatibility, this new version will need to wait for adoption and extensive deployment in new smartphones before it can be useful to IoT device developers.

JanineLove
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Re: Backward compatibility?
JanineLove   12/4/2013 4:43:05 PM
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Rich: My understanding is that, by its very nature of being "low energy" it cannot be backward compatible with 'classic' BT. However, I believe both modes could co-exist in say a dual-mode phone. And they probably should because they have different purposes. What is happening here is that BT LE is going after a market that has been dominated by other low power wireless protocols, such as ANT+.

EKroeter
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Re: Backward compatibility?
EKroeter   12/4/2013 4:51:23 PM
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All new Bluetooth versions are designed to be reverse compatable with previous versions of the specification and v4.1 is no different.

The only caveat is Bluetooth Smart products that impelement the "Low Energy" feture introduced in the v4.0 specification. Bluetooth Smart products (such as the latest generation of fitness monitors and other wearables) are compatible with other products labled Bluetooth Smart or Bluetooth Smart Ready.

chrisnfolsom
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Manager
What is the range, and what is offered in comparison to WiFi?
chrisnfolsom   12/5/2013 5:08:39 AM
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It seems many devices are going with wifi - range being the largest issue although being able to work with existing networks, and the internet another.  You would need to have repeaters in a house unless the range was boosted, and as mentioned before backward compatibility with existing networks?  I can see in cars and such, but how in a house, and between "things" will it work?

junko.yoshida
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Re: What is the range, and what is offered in comparison to WiFi?
junko.yoshida   12/5/2013 10:24:11 PM
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@Chris, agreed. I have exactly the same question. How do they plan to address the "range" issues when this new spec is used in a said IoT scenario?

zewde yeraswork
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Blogger
manual intervention
zewde yeraswork   12/5/2013 9:12:14 AM
Backward compatibility and usability for app-cessories such as wearables are both very important aspects of this update that remain sort of in question. Still, the fact that this update allows for maintenance of connections with less frequent manual intervention is a major boon, as that has often been an issue with Bluetooth connectivity. Expanded time intervals should also benefit the user experience.

 

EE,etc.
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Manager
How much smart BT is smart?
EE,etc.   12/6/2013 10:01:40 AM
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It's great to see the new improvements in BT in terms of power consumption and RF, I am wondering if BT ever going to implement a more secure and solid connection to become attarctive for other applications such as medical and Industrial?

rick merritt
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Author
Re: How much smart BT is smart?
rick merritt   12/6/2013 11:01:12 AM
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@EE, etc: What sort of security features do yo want? and why?

EE,etc.
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Manager
Re: How much smart BT is smart?
EE,etc.   12/6/2013 1:01:23 PM
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security features has been improved in BT since rev 2.1, however, still not fully adopted for medical applications (e,.g: Body Sensor) to my knowledge, instead other standards such as 802.15.6 is being sought.

personally, I think with current low power support in BT (1mW) and a more robust security implementation , BT can easily become a choice, mainly becuse it is using a shared spectrum.

krisi
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CEO
Re: How much smart BT is smart?
krisi   12/6/2013 3:21:55 PM
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how is new Bluetooth comparing to the latest ZigBee?

y_sasaki
User Rank
CEO
IP over Bluetooth
y_sasaki   12/6/2013 8:15:04 PM
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I don't see immediate application for IP over BT4.1. Sure it is a "good to have" feature, but they have to make success on BT4.0 GATT model first. Ever since BT4.0 spec was released on 2010, it is sayd "This year BTLE will breakout" almost every year, but I still don't see clear trend from Legacy profile-based BT2.1 to GATT-based BT4.0.

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