Patent ID: 8374120

Claim:
A base station apparatus in a broadband wireless communication system, the apparatus comprising: at least one function board configured to process a baseband digital signal; at least one processor board configured to control the at least one function board; at least one intermediate frequency (IF) board configured to receive digital signals from the at least one function board, convert the digital signals to analog signals, and transmit the analog signals to a signal transceiver; and at least one switch configured to perform a function of a backplane and provide at least one adjustable and extendable signal path among the at least one function board and the at least one processor board, the at least one switch further configured to selectively couple the at least one function board and the at least one IF board, wherein a number of ports to connect the at least one function board and the at least one processor board are increased by adding a new switch to the at least one switch.