Base station apparatus and method for controlling base station apparatus

Abstract

According to one embodiment, a base station apparatus ( 1 ) includes: a radio equipment control ( 2 ) that generates a baseband signal including data (D 1 ); a microwave apparatus ( 4 ) that modulates the baseband signal to a microwave to transmit by radio; a microwave apparatus ( 5 ) that demodulates the received first microwave to the baseband signal, then extracts a clock (CLK 1 ) from a cycle of the data (D 1 ) included in the baseband signal, imports the baseband signal in synchronization with the clock (CLK 1 ), and plays back the data (D 1 ); and a radio equipment ( 3 ) that modulates the data (D 1 ) played back by the microwave apparatus ( 5 ) to a high-frequency signal, and the microwave apparatus ( 5 ) outputs dummy data instead of the played back data when a frequency fluctuation amount of the clock (CLK 1 ) exceeds a predetermined range.

1 . A communication system comprising:
 a radio equipment controller;   a radio equipment;   a first radio apparatus; and   a second radio apparatus,   wherein the radio equipment controller is configured to:
 generate information for controlling the radio equipment; and 
 send the information to the first radio apparatus, 
   wherein the first radio apparatus is configured to:
 receive the information from the radio equipment controller; and 
 send the information to the second radio apparatus by a radio signal, 
   wherein the second radio apparatus is configured to:
 receive the information from the first radio apparatus in the radio signal; and 
 send the information to the radio equipment, and 
   wherein the radio equipment is configured to:
 receive the information from the second radio apparatus; and 
 perform wireless communication with a mobile terminal. 
   
     
     
         2 . The communication system according to  claim 1 , wherein the first radio apparatus is further configured to be connected with the radio equipment controller. 
     
     
         3 . The communication system according to  claim 2 , wherein the radio equipment controller and the first radio apparatus are connected by a first cable. 
     
     
         4 . The communication system according to  claim 3 , wherein the first cable is a first optical cable. 
     
     
         5 . The communication system according to  claim 1 , wherein the second radio apparatus is further configured to be connected with the radio equipment. 
     
     
         6 . The communication system according to  claim 5 , wherein the radio equipment and the second radio apparatus are connected by a second cable. 
     
     
         7 . The communication system according to  claim 6 , wherein the second cable is a second optical cable. 
     
     
         8 . A method for a communication system comprising:
 generating, by a radio equipment controller, information for controlling a radio equipment;   sending, by the radio equipment controller, the information to a first radio apparatus;   receiving, by the first radio apparatus, the information from the radio equipment controller;   sending, by the first radio apparatus, the information to a second radio apparatus by a radio signal;   receiving, by the second radio apparatus, from the first radio apparatus, the information in the radio signal;   sending, by the second radio apparatus, the information to the radio equipment;   receiving, by the radio equipment, the information from the second radio apparatus; and   performing, by the radio equipment, wireless communication with a mobile terminal.   
     
     
         9 . The method for the communication system according to  claim 8 , wherein the first radio apparatus is connected with the radio equipment controller. 
     
     
         10 . The method for the communication system according to  claim 9 , wherein the radio equipment controller and the first radio apparatus are connected by a first cable. 
     
     
         11 . The method for the communication system according to  claim 10 , wherein the first cable is a first optical cable. 
     
     
         12 . The method for the communication system according to  claim 8 , wherein the second radio apparatus is connected with the radio equipment. 
     
     
         13 . The method for the communication system according to  claim 12 , wherein the radio equipment and the second radio apparatus are connected by a second cable. 
     
     
         14 . The method for the communication system according to  claim 13 , wherein the second cable is a second optical cable.