WiMAX has a strong base of standardization and industry support that provides a strong evolutionary path of its capabilities.This paper presents the category

name

released time

approved time and status quo of WiMAX.Furthermore

we research into the new standard of IEEE 802.19g-2007 from five aspects

i.e.protocol model

network control and management system

network reference model

General Packet Convergence Sub-layer（GPCS）

Media Independent Handover（MIH）.