IEEE 802.15.4d-2009 PDF
Amendment Standard – Superseded. This amendment to IEEE Std 802.15.4-2006 is limited to defining a new PHY and such changes to the MAC as are necessary to support a new frequency allocation (950 MHz) in Japan. The amendment shall completely follow the new technical conditions described in Japanese ministerial ordinance. The amendment shall coexist with passive tag systems in the band.