2 / AMDA having function of UTOPIA level 2 and data path establishing

摘要

The present invention provides a UTOPIA level 2 function and a data path setting function in a base station interface subsystem (BIS) provided in an IMT-2000 control station (RNC) to perform a matching function with a base station (BS). The present invention is to provide an ATM multiplexing / demultiplexing device (AMDA) having a plurality of ATM Frame / Deframe Assembly (AFDA) in a group group to match the cell bus by group group A 16-bit Cellbus matching unit that sets a path so that data from the corresponding group AFDA can be transmitted to the corresponding port and supports a UTOPIA level 2 function; A processor that performs an ATM SAR function on data transmitted through a corresponding port of the 16-bit Cellbus matching unit; A 16-bit multiplexer / demultiplexer for transmitting the data to a corresponding one of two 16-bit UNI ports according to the AFDA group to which the data transmitted from the 16-bit Cellbus matching unit belongs; By transmitting and receiving data between the 16-bit multiplexer / demultiplexer and an ATM switch by performing an ATM physical layer function, and configuring two 16-bit UNIs extracting ATM cells from received data, transparency of data transmission is ensured and UTOPIA is performed. Level 2 functionality is supported to provide 8: 1 multiplexing / demultiplexing between up to eight AFDA and ATM exchanges.