Patent ID: 6393280
Filing Date: 2002-05-21
Classification: H04L,H04W

Abstract:
A radio interface unit in wireless local loop network system, in which said radio interface unit includes a subscriber interface module for interface with subscriber terminal and data, a high frequency processing module for transmitting/receiving radio data to/from a radio port via an antenna, and a modem for converting and interfacing data between the subscriber interface module and the high frequency module, said radio interface unit comprising:a modem unit having a master modem which performs an automatic frequency control function for a direct control of a high frequency, power control function, and automatic gain control function, and is provided with a pilot channel, power control channel, and signaling channel only when the master modem operates as a primary one, and a plurality of slave modems which have pilot, power control and signaling channels and receive power control and signaling channels only when said slave modems operate as a primary modem, and which receive only said power control channel and signaling channel when they operate as a secondary modem; and a control module for controlling transmitting/receiving state of said modem unit and state of said subscriber interface module.