A packet data processing apparatus of a wide-band wireless local loop
(W-WLL) system includes a local area network (LAN) controller for
performing an interface with a LAN and transmitting and receiving a
packet data. The system further includes an high-level data link control
(HDLC) controller for transmitting and receiving a packet data to and
from a subscriber wireless connection unit through an HDLC channel, a
dynamic random access memory having a first buffer for storing a mobile
image packet data transmitted between the HDLC controller and the LAN
controller and a second buffer for storing a packet data other than the
mobile image, and a CPU for performing the corresponding control function
of a packet data routing unit. Buffers are utilized and managed
separately for transmitting mobile image data and general data from the
packet data routing unit of the W-WLL system to the Internet.