wilamowski-b-m-irwin-j-d-industrial-communication-systems-2011

Bluetooth 49-7
IrMC
OBEX
WAG
At
Commands
TCS BIN
WAP
UDP/TCP
IP
PPP
RFOOMM
Logical link control and adaptation protocol
Host controller interface
Link manager protocol
Baseband
Bluetooth radio
SDP
Audio
FIGURE 49.3
The Bluetooth protocol stack.
the top, with the user application layer typically dealing with the topmost layers. The underlying generic
standard, the Open Systems Interconnection (OSI), was developed by the International Organization for
Standardization (ISO) in 1974. The Bluetooth protocol stack is illustrated in Figure 49.3.
Based on the functionality of the protocols, they have been classified into four basic types of protocols:
core, telephony, cable replacement, and adopted protocols [2,3]. This section will only briefly
list the classification of the protocols. More details on each of these can be found in Sections 49.2
and 49.4.
Bluetooth Core Protocols entail the Base band, the Link Manager Protocol (LMP), the Logical-
Link Control Adaptation Protocol (L2CAP), and the Service Discovery Protocol (SDP).
Telephony Control Protocols entail the Telephony Control Specification Binary (TCS-BIN) and
the AT Commands.
Cable Replacement Protocols incorporate Radio Frequency Communication (RCCOMM).
Adopted Protocols comprise the Point-to-Point Protocol (PPP), the User Datagram, the
Protocol/Transmission Control Protocol/Internet Protocol (UDP/TCP/IP), the Wireless
Application Protocol (WAP), the Object Exchange Protocol (OBEX), and the Infrared Mobile
Communications (IrMC).
49.4 Bluetooth Profiles
Profiles enable end-user functionality by defining usage models and behavior characteristics [4]. One of
the most important objectives while defining profiles are the expectations on achieving a certain level
of interoperability between various manufacturers of Bluetooth devices. The profiles define a minimum
set of characteristics that should be inherent in all products.
© 2011 by Taylor and Francis Group, LLC