[sebm]

BLE provides different ways of making requests, it seems the mode with the highest throughputs is when the central (client) subscribes to notifications for a service on a peripheral (server) and the peripheral writes data to the central with or without responses.

I don't have restested to look for the maximum throughput with notification without response but searching the bluetooth mailing list gives this interesting link http://lists.apple.com/archives/bluetooth-dev/2013/Jun/msg00...

Note that it certainly was tested on iOS 6 and iOS 7 has since improved its BLE stack implementation, for instance back then MTU was fixed to 22 bytes while it is now negociated and usually is around 112 bytes between 2 iOS 7 devices (iPhone 5).