Patent ID: 7123628

Claim:
A method of processing signals using medium access control sub-layers in a communications system which has a plurality of mobile terminals and a base station, said medium access control sub-layers being respectively provided in said mobile terminals and base station, said method comprising: performing, in each of said medium access control sub-layers, self-basic functions or functions associated with upper layers or a lower layer of said mobile terminals and/or said base station, said performing step being performed if signal processing operations of a corresponding one of said mobile terminals, of said base station, or between said corresponding mobile terminal and said base station are requested; performing a synchronization information of system information broadcasting control operation between said corresponding mobile terminal and said base station, said step of performing said broadcasting control operating including: sending time information, system information and paging information from said base station to said corresponding mobile terminal if said broadcasting control operation between said corresponding mobile terminal and said base station is requested; and receiving said time information, system information and paging information from said base station and transferring a synchronization request message or system information update requested message to said lower layer of said corresponding mobile terminal performing a random access control operation between said corresponding mobile terminal and said base station, said step of performing said random access control operation including: sending a radio resource request message from said corresponding mobile terminal to said base station if said random access control operation between said corresponding mobile terminal and said base station is requested; sending a radio resource request acknowledge message from said base station to said corresponding mobile terminal; sending a radio resource response message from said base station to said corresponding mobile terminal; and transferring a radio resource response reception message to a specific one of said upper layers of said corresponding mobile terminal.