modulation ( Enhanced Data Rate packets allow up to triple data rate by using a different RF modulation for the payload)Ī connection must be explicitly set up and accepted between two devices before packets can be transferred.ĪCL packets are retransmitted automatically if unacknowledged, allowing for correction of a radio link that is subject to interference.Forward error correction (optionally reducing the data rate in favour of reliability).length (1, 3, or 5 time slots depending on required payload size).It can carry packets of several types, which are distinguished by: The normal type of radio link used for general data packets using a polling TDMA scheme to arbitrate access. 2.10 Low Energy Security Manager Protocol (SMP)Ĭontroller stack Asynchronous Connection-Less (ACL).2.9 Low Energy Attribute Protocol (ATT).2.7 Audio/video data transport protocol (AVDTP).2.6 Audio/video control transport protocol (AVCTP).2.3 Radio frequency communication (RFCOMM).2.2 Bluetooth network encapsulation protocol (BNEP).
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