The secret sauce in BLE low energy is restricting the packet size. Think about this way. Yelling across a football field the pledge of allegiance takes a lot of effort. Yelling across a football field "Hike!" is a lot easier and can be done repeatedly without wasting energy. If you are looking for speed and larger packet sizes. I suggest Bluetooth 2.1 or even 3.0. MFi supports this. -Chris On Apr 11, 2013, at 12:00 PM, bluetooth-dev-request@lists.apple.com wrote:

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Today's Topics:

1. data transmission rate...to slow... (Frederic Visticot) 2. Re: data transmission rate...to slow... (Etan Kissling) 3. Re: A2DP with AAC codec: non-existent document reference in the "Bluetooth Accessory Design Guidelines for Apple Products" (John Westing)

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Message: 1 Date: Thu, 11 Apr 2013 14:54:49 +0200 From: Frederic Visticot <fvisticot@gmail.com> To: "bluetooth-dev@lists.apple.com" <bluetooth-dev@lists.apple.com> Subject: data transmission rate...to slow... Message-ID: <CAEvxfZmb5S_p7xiMe1OGR_wFTpt5cUfbZVVUZxoLjXCWkzk-gQ@mail.gmail.com> Content-Type: text/plain; charset="iso-8859-1"

I have made some tests to exchange data between 2 iDevices (iOS6 iPad3/iPhone5) using CBPeripheralManagerConnectionLatencyLow settings.

The maximum rate I have is 1135 bytes / s (1.1KB/s)

- Is it possible to get better speed ? - What is the maximum I can have with iOS stack ?

...

From some documents: BLE: 200kbits/s -> 25KB/s NFC: 424kbits/s

Why is the difference so huge (20x slower) ?

Fred