For release: 19 May 2009
NFC Forum Announces Two New Specifications to Foster Device Interoperability and Peer-to-Peer Device Communication
NFC Digital Protocol and Logical Link Control Protocol Candidate Specifications Build on Industry Standards to Accelerate Development and Deployment
WAKEFIELD, Mass., USA - May 19, 2009 - The NFC Forum (http://www.nfc-forum.org), a non-profit industry association that advances the use of Near Field Communication (NFC) technology, today announced the release of two candidate specifications that further the integration, implementation and standards interpretation of NFC technology. The new NFC Digital Protocol and the NFC Logical Link Control Protocol (LLCP) candidate specifications are available to the public for download at no charge at: http://www.nfc-forum.org/specs/.
The NFC Digital Protocol specification addresses the digital protocol for NFC-enabled device communication, providing an implementation specification on top of the ISO/IEC 18092 and ISO/IEC 14443 standards. It harmonizes the integrated technologies, specifies implementation options and limits the interpretation of the standards; in essence, showing developers how to use NFC, ISO/IEC 14443 and JIS X6319-4 standards together to ensure global interoperability between different NFC devices, and between NFC devices and existing contactless infrastructure.
The NFC Digital Protocol specification defines the common feature set that can be used consistently and without further modification for major NFC applications in areas such as financial services and public transport. More specifically, the specification covers the digital interface and the half-duplex transmission protocol of the NFC-enabled device in its four roles as Initiator, Target, Reader/Writer and Card Emulator. The specification includes bit level coding, bit rates, frame formats, protocols, and command sets, which are used by NFC-enabled devices to exchange data and bind to the LLCP protocol.
The NFC Logical Link Control Protocol (LLCP) specification defines an OSI layer-2 protocol to support peer-to-peer communication between two NFC-enabled devices. This is essential for any NFC applications that involve bi-directional communications. The specification defines two service types, connectionless and connection-oriented, organized into three link service classes: connectionless service only; connection-oriented service only; and both connectionless and connection-oriented service. The connectionless service offers minimal setup with no reliability or flow-control guarantees (deferring these issues to applications and to the reliability guarantees offered by ISO/IEC 18092 and ISO/IEC 14443 MAC layers). The connection-oriented service adds in-order, reliable delivery, flow-control, and session-based service layer multiplexing.
LLCP is a compact protocol, based on the industry standard IEEE 802.2, designed to support either small applications with limited data transport requirements, such as minor file transfers, or network protocols, such as OBEX and TCP/IP, which in turn provide a more robust service environment for applications. The NFC LLCP thus delivers a solid foundation for peer-to-peer applications, enhancing the basic functionality offered by ISO/IEC 18092, but without impacting the interoperability of legacy NFC applications or chipsets.
"As more NFC devices and applications come to market, it is essential that we ensure their smooth interoperability with earlier NFC implementations and existing contactless infrastructure such as ISO/IEC 14443 and FeliCa," said Koichi Tagawa, chairman of the NFC Forum. "These two specifications are significant because they establish clear and well-defined parameters for the implementation behavior of NFC devices and applications, thereby providing this needed assurance."
Both the Digital Protocol and LLCP specifications are candidates for final release pending feedback from NFC Forum members and other standards organizations. By releasing these specifications in advance, the NFC Forum is enabling organizations in the NFC ecosystem to begin integrating them into their own work. This gives both NFC Forum members and other standards organizations an opportunity to both accelerate their development and provide valuable feedback that can be incorporated into the final specifications. Once the feedback has been evaluated and integrated, both specifications will be officially approved and released by the NFC Forum.
Additional information on NFC Forum specifications can be found at http://www.nfc-forum.org/specs/.
About Near Field Communication Technology
Near Field Communication (NFC) is a standards-based, short-range wireless connectivity technology that enables simple and safe two-way interactions between electronic devices. NFC technology allows consumers to perform contactless transactions, access digital content and connect devices with the simplicity of a single touch.
Near Field Communication (NFC) technology provides global interoperability of contactless identification and interconnection technologies. NFC operates in the 13.56 MHz frequency range, over a typical distance of a few centimeters. The underlying layers of NFC technology are based on ISO, ECMA, and ETSI standards. NFC technology is supported by the worlds leading communication device manufacturers, semiconductor producers, network operators, IT and services companies, and financial services organizations. NFC is compatible with hundreds of millions of contactless cards and readers already deployed worldwide.
About the NFC Forum
The NFC Forum, http://www.nfc-forum.org, was launched as a non-profit industry association in 2004 by leading mobile communications, semiconductor and consumer electronics companies. The Forums mission is to advance the use of Near Field Communication technology by developing specifications, ensuring interoperability among devices and services and educating the market about NFC technology. The Forums 150 global member companies currently are developing specifications for a modular NFC device architecture, and protocols for interoperable data exchange and device-independent service delivery, device discovery and device capability.
The NFC Forum's Sponsor members, which hold seats on the Board of Directors, include leading players in key industries around the world. The Sponsor members are: HP, Innovision Research & Technology plc, INSIDE Contactless, MasterCard Worldwide, Microsoft Corp., NEC, Nokia, NTT DOCOMO, Inc., NXP Semiconductors, Panasonic, Renesas Technology, Samsung, Sony Corporation, STMicroelectronics and Visa Inc.