ISO/IEC 21481:2021 PDF

Name: ISO/IEC 21481:2021 — Information technology — Telecommunications and information exchange between systems — Near field communication interface and protocol 2 (NFCIP-2)
SKU: ISO/IEC 21481:2021
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Information technology — Telecommunications and information exchange between systems — Near field communication interface and protocol 2 (NFCIP-2)

Название (английский):

ISO/IEC 21481:2021

Information technology — Telecommunications and information exchange between systems — Near field communication interface and protocol 2 (NFCIP-2)

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 5
Дата публикации:: 20 апреля 2021 г.
Издание:: ISO/IEC IS 21481 edition 3 version 1
ICS:: 35.100.20

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Описание (английский):

This document specifies the communication mode selection and switching mechanism, designed not to disturb any ongoing communication at 13,56 MHz, for devices implementing ISO/IEC 18092, the ISO/IEC 14443 or ISO/IEC 15693 series. The communication modes are specified in the respective International Standards and are outside of the scope of this document.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO/IEC 21481:2021 defines the Near Field Communication Interface and Protocol 2 (NFCIP-2), a critical international standard for telecommunications and information exchange between systems. This third edition standard focuses on specifying the communication mode selection and switching mechanism for NFC devices operating at the 13.56 MHz frequency band. The key feature of ISO/IEC 21481:2021 is its design to enable seamless mode switching without disrupting ongoing communications, thus enhancing interoperability among devices implementing the ISO/IEC 18092, ISO/IEC 14443, or ISO/IEC 15693 series standards.

NFCIP-2 serves as a foundation for stable NFC communications by managing how devices detect external radio frequency (RF) fields and select communication modes. It complements and interfaces with specialized standards for different NFC communication modes, including PCD (Proximity Coupling Device), PICC (Proximity Integrated Circuit Card), and VCD (Vicinity Coupling Device). By doing so, it facilitates smooth transitions and coexistence between these modes within NFC-enabled devices.

Key Topics

Communication Mode Selection NFCIP-2 devices implement a mechanism to select one of four communication modes-NFC, PCD, PICC, or VCD-based on detected external RF fields. The standard ensures that the chosen mode aligns with specific mode requirements defined in other international standards, providing consistency and interoperability.

External RF Field Detection A crucial part of the protocol is the detection of any external RF field operating at 13.56 MHz with an intensity above a defined threshold. This detection prevents collisions and disruptions by ensuring a device does not generate its own RF field when another device’s communication is ongoing.

RF Field Generation Control The standard governs when an NFCIP-2 device may generate its RF field. Devices only activate their RF emission if no external RF field is detected, thereby minimizing interference and ensuring reliable data exchanges.

Mode Switching Procedure The documented sequence enables devices to switch communication modes without interrupting current communications. This dynamic switching improves device flexibility and supports complex NFC use cases, including seamless transitions between contactless card emulation, peer-to-peer, and reader/writer modes.

Compatibility and Harmonization ISO/IEC 21481:2021 is harmonized with relevant NFC Forum requirements and complements standards such as ISO/IEC 18092 (NFCIP-1), ISO/IEC 14443, and ISO/IEC 15693, ensuring wide usability and global interoperability of NFC solutions.

Applications

Contactless Payment Systems Enables secure and efficient transitions between card emulation and reader modes, facilitating smooth payment transactions without communication disruptions.

Access Control and Identification Supports devices switching between various NFC modes used in secure access cards and identification badges.

Smartphones and Consumer Electronics Provides a robust protocol for smartphones and other consumer devices to interact with NFC tags, cards, and other NFC-enabled devices with multiple communication modes.

IoT and Connected Devices NFCIP-2 empowers IoT devices with reliable short-range communication capabilities, enabling device pairing, data exchange, and control without interference.

Public Transport and Ticketing Ensures resilient NFC communication for transit cards, enabling quick mode changes during use in busy environments.

Related Standards

ISO/IEC 18092 (NFCIP-1) Specifies the interface and protocol for NFC peer-to-peer communication used within NFCIP-2 devices.

ISO/IEC 14443 Series Defines proximity card standards and communication modes (PCD and PICC) that are integrated under NFCIP-2.

ISO/IEC 15693 Series Covers vicinity cards and devices (VCD mode), whose communication protocols are supported through the NFCIP-2 standard.

NFC Forum Device Requirements Provides practical requirements and use case examples that align closely with the NFCIP-2 mode selection mechanisms.

ITU-R Radio Regulations Allocates and regulates the 13.56 MHz frequency band used for ISM applications, which is fundamental for NFC communication.

By adhering to ISO/IEC 21481:2021, manufacturers and developers ensure their NFC-enabled systems achieve stable, interoperable, and efficient communication across multiple operating modes, supporting an expanding ecosystem of contactless technologies worldwide.

ISO/IEC 21481:2021 PDF

Abstract

Похожие стандарты

Overview

Key Topics

Applications

Related Standards

Технические детали

BS ISO/IEC 18092:2023

Telecommunications and information exchange between systems. Near Field Communication Interface and Protocol…

ISO/IEC 14443-2:2020/Cor 2:2023

Cards and security devices for personal identification — Contactless proximity objects — Part 2: Radio freque…

ISO/IEC 15693-3:2009/Amd 4:2017

Identification cards — Contactless integrated circuit cards — Vicinity cards — Part 3: Anticollision and tran…