Patent ID: 8594731

Claim:
A radio equipment controller coupled to at least first radio equipment and second radio equipment in a base station via daisy-chain links of Common Public Radio Interface (CPRI), the radio equipment controller comprising: a processor which manages usage of control words of slow Command and Management (C&M) subchannel and first and second control words of vendor specific subchannel in CPRI hyperframes by performing a procedure including: dividing previously the control words of slow C&M subchannel in a predetermined number of CPRI hyperframes into at least a first group of slow C&M control words and a second group of slow C&M control words, and assigning the first group of slow C&M control words and the first control word of vendor specific subchannel to the first radio equipment, and the second group of slow C&M control words and the second control word of vendor specific subchannel to the second radio equipment; and a transmitter which transmits first address information to the first radio equipment by using the first control word of the vendor specific subchannel to specify in which part of the CPRI hyperframes the first group of C&M control words are located, and transmits second address information to the second radio equipment by using the second control word of the vendor specific subchannel to specify in which part of the CPRI hyperframes the second group of C&M control words are located.