MULTI CARRIER DIGITAL SUBSCRIBER LINE SYSTEM, SPECTRUM MANAGEMENT METHOD OF THE SAME AND CENTRAL OFFICE APPARATUS

摘要

The present invention relates to a multi-carrier digital subscriber line (hereinafter referred to as MC DSL) system, a spectrum management method and a base station apparatus of the system.;The present invention provides a method of measuring channel information of lines included in a binder, collecting the measured channel information, and using the collected channel information to determine the number of bits allocated to subchannels of at least one of the lines. Determine a subchannel having a minimum cost function that is a sum of a function of power increase and decrease of a subchannel of the one line and a function of reduction of the maximum allowable allocation bit number of the subchannel of at least one of the remaining lines. Determining the number of allocated bits by adding the number of bits, and performing communication by allocating bits to each subchannel of the lines according to the determined number of allocated bits and power. Provide a method. It also provides an MC DSL system and a base station apparatus.;The spectrum management method of the multi-carrier digital subscriber line system and the base station apparatus used in the present invention have a high performance while having a small amount of calculation.