Bluetooth Core Protocols

Question 1

Bluetooth radio

Answer 1

Specifies details of the air interference including frequency,
frequency hoping,
modulation scheme,
transmission power

Question 2

Baseband

Answer 2

Enables physical link btw Bluetooth unit forming piconet
Packet format,
Timing and power control,
Error detection / correction like CRC ( cyclic redundancy code )

Question 3

Link Manager Protocol (LMP)

Answer 3

To sense other radio devices in the Bluetooth range
To establish d link
P4m security functions like encryption and authentication
Generate and exchange keys

Question 4

Logic link Control and Adapter Protocol

Answer 4

Segmentation of large packets

Reassembly of smaller packets

Question 5

Service Discovery Protocol (SDP)

Answer 5

Enable a Bluetooth device to join piconet using SDP it can inquire what services are available in piconet and how can we access them
In inquiry mode device will broadcast globalID packets
2ID packets every 625 micro second
GlobalID indicates device profile
Profile is matched and connection is established