P802.15.4/D4 - Unapproved IEEE Draft Revision for IEEE Standard for Information Technology-Telecommunications and Information Exchange Between Systems-Local and Metropolitan Area Networks-Specific Requirements-Part 15.4B: Wireless Medium Access Control (MAC) and Physical Layer (PHY) Specifications for Low Rate Wireless Personal Area Networks (WPANs) (Amendment of IEEE Std 802.15.4-2003) Superseded by P802-15.4/D5 | IEEE Standard | IEEE Xplore