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Related standards IEEE 802.15.4-2003 specifies the physical layer protocol and media access control (MAC) layer. IEEE 802.15.4e-2012 specifies the physical layer for ZigBee wireless personal area networks. IEEE 802.15.4e-2012-2012 also specifies the MAC layer and security, a profile of IEEE 802.15.4e. IEEE 802.15.4e-2014-2014 specifies the PHY and MAC layer for wireless body area networks. History The IEEE 802.15.4 task group was chartered in 1999 as an ISO/IEC membership standardization organization. The task group's charter was ratified by the IEEE Standards Board in April 2000. During 2000, the task group members participated in two annual conferences. After the second annual conference, the task group submitted its first set of task group specifications to ISO in August 2001. These specifications were first published in December 2001. The first standards publication ISO/IEC 8802-15-4-2003 was adopted on 23 June 2002 and published in December 2003. In September 2004, the IEEE 802.15.4 specifications were published in the first IEEE 802.15.4 book, also known as the reference book. In 2012, The IEEE 802.15.4e-2012-2012 standard was created by modifying the 802.15.4e-2011 standard. The 802.15.4e-2011-2011 standard was developed as a solution for IEEE 802.15.4 wireless personal area networks that uses the orthogonal frequency division multiplexing (OFDM) radio interface with digital modulation using the Gaussian Minimum Shift Keying (GMSK) modulation. In 2014, the IEEE 802.15.4e-2014-2014 standard was developed. The IEEE 802.15.4e-2014-2014 standard was developed to meet the growing need for a PHY and MAC layer for low power and medium access. This is especially true for the so-called Internet of Things (IoT), where a greater emphasis was placed on the life cycle of devices (appearance, lifetime, and repairability). The IEEE 802.15.4e-2014-2014 standard was developed from the IEEE 802.15.4e-2012-2012 standard. The two standards together address the functionality and PHY/MAC layer requirements of the IoT. Wireless Personal Area Network (WPAN) Working Group




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