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| n |
Time
Division Duplex (TDD) scheme for full-duplex transmissions
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– |
master
device establishes connection, slave devices synchronize their
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clock
with master clock for duration of connection
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| n |
Synchronous
Connection Oriented (SCO) type (used primarily for
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voice)
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– |
channel
symmetric, only data packets retransmitted
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| n |
Asynchronous
Connectionless (ACL) type (used primarily for packet
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data)
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– |
master
unit controls the link bandwidth and decides how much piconet
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bandwidth
is given to each slave, and the symmetry of the traffic
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– |
slaves
must be polled before they can transmit data.
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– |
The
ACL link also supports broadcast messages from the master to all
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slaves
in the piconet
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