To provide mobile users with basically the same services offered by ex
isting ATM networks, via wireless links, the ATM wireless access (AWA)
equipment must implement functions to cope with ATM signals. This pap
er describes the ATM interface unit to provide these functions, and th
e key technologies implemented in this system including automatic repe
at request (ARQ) control, cell delay variation (CDV) compensation, and
OAM processing.