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Adopted Protocols

PPP

In Bluetooth technologies PPP is designed to run over RFCOMM to accomplish point to point connection.

PPP is the IETF Point-to-Point Protocol (Internet Engineering Task Force, IETF Directory List of RFCs) and PPP-Networking is the means of taking IP packets to/from the PPP layer and placing them onto the LAN.

 

 

TCP/UDP/IP

These protocol standards are already defined by the Internet Engineering Task Force and used commonly in communication across the Internet (Internet Engineering Task Force, IETF Directory List of RFCs). The TCP/IP stacks are used in numerous devices including printers, handheld computers and mobile handsets the use of the TCP/IP protocol in the Bluetooth Specification Protocol for the implementation in Bluetooth devices allows for communication with any other device connected to the Internet. The Bluetooth device should be a Bluetooth cellular handset or a data access point for example is then used as a bridge to the Internet. TCP/IP/PPP is used for the all Internet Bridge usage scenarios in Bluetooth 1.0 and for OBEX in future versions. UDP/IP/PPP is also available as transport for WAP.

OBEX Protocol

IrOBEX (shortly OBEX) is a session protocol developed by the Infrared Data Association (IrDA) to exchange objects in a simple and spontaneous manner. OBEX, which provides the same basic functionality as HTTP but in a much lighter fashion, uses a client-server model and is independent of the transport mechanism and transport API, provided it realizes a reliable transport base. Along with the protocol itself, the "grammar" for OBEX conversations between devices, OBEX also provides a model for representing objects and operations. In addition, the OBEX protocol defines a folder-listing object, which is used to browse the contents of folders on remote device. In the first phase, RFCOMM is used as sole transport layer for OBEX . Future implementations are likely to support also TCP/IP as a transport.

Content Formats

vCard (The Internet Mail Consortium, vCard - The Electronic Business Card Exchange Format) and vCalendar (The Internet Mail Consortium, vCalendar - The Electronic Calendaring and Scheduling Exchange Format) are open specifications developed by the versit consortium and now controlled by the Internet Mail Consortium. These specifications define the format of an electronic business card and personal calendar entries and scheduling information, respectively. vCard and vCalendar do not define any transport mechanism but only the format under which data is transported. By adopting the vCard and vCalendar, the SIG will help further promote the exchange of personal information under these well defined and supported formats. The vCard and vCalendar specifications are available from the Internet Mail Consortium and are being further developed by the Internet Engineering Task Force (IETF).

Other content formats, which are transferred by OBEX in Bluetooth, are vMessage and vNote . These content formats are also open standards and are used to exchange messages and notes. They are defined in the IrMC (Infrared Mobile Communications) specification, which also defines a format for the log files that are needed when synchronizing data between devices.

WAP

The main advantage of using WAP features in Bluetooth technologies is to build application gateways, which will mediate between WAP servers and some other application on the PC. In simpler terms, this will provide functions like remote control and data fetching from PC to handset. The idea behind the use of WAP is to reuse the upper software application developed for the WAP Application Environment Bluetooth Usage Models and Protocols.



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