scope:

This amendment defines changes to the smart utility network (SUN) physical layers (PHYs) in IEEE Std 802.15.4™-2015 that enable the use of the 870-876 MHz and 915-921 MHz bands in Europe, the 902-928 MHz band in Mexico, the 902-907.5 MHz and 915-928 MHz bands in Brazil, the 915-928 MHz band in Australia and New Zealand, and additional Asian regional frequency bands. This amendment also changes the channel parameters listed in the SUN PHYs, the low energy critical infrastructure monitoring (LECIM) PHY, and the television white space (TVWS) PHY for the 470-510 MHz band in China and the 863-870 MHz band in Europe and aligns these channel parameters with regional requirements. The amendment includes channel access and/or timing changes to the medium access control (MAC) necessary for conformance to regional requirements for these bands.

With the rapid growth in applications for short-range devices in Europe, the Conference of Postal and Telecommunications Administrations (CEPT) Electronic Communications Committee (ECC) has designated the 870-876 MHz and 915-921 MHz spectrum for short-range device use. The new spectrum has also been opened up in various other regions, including the 902-928 MHz band in Mexico, the 902- 907.5 MHz and 915-928 MHz bands in Brazil, the 915-928 MHz band in Australia and New Zealand, and additional Asian regional frequency bands. The availability of this additional spectrum will bring considerable benefits, as it supports applications such as smart metering and new uses in the automotive industry.

This amendment also aligns the 470-510 MHz band in China and the 863-870 MHz band in Europe and their channel parameters specified in IEEE Std 802.15.4-2015 with the updated regional requirements.