Patent ID: 8520591

Claim:
A mobile radio terminal comprising: a first communication unit which makes radio communications in LTE mode with a first radio base station of a first system; a second communication unit which makes radio communications in CDMA mode with a second radio base station of a second system; an information obtaining unit which obtains System Information Block 8 as system information of the second system by means of the first communication unit; and a system transition unit which controls the second communication unit to make communications with the second radio base station on the basis of the system information including the System Information Block 8 when the first communication unit receives an instruction from the first system, wherein if the first communication unit receives the instruction from the first system, the system transition unit controls the second communication unit to synchronize with the second radio base station on the basis of time information included in the system information, wherein the System Information Block 8 includes System Timing information, Long Code information, and Neighbor Cell List information, wherein, on the basis of the Neighbor Cell List information, pilot channel signals are received from a plurality of neighbor cells, qualities of the received pilot channel signals are measured, and the neighbor cell which is most suitable for communication is determined, and wherein the system transition unit makes communications with the second radio base station on the basis of the system information such that starting a PNG and starting the generation of the Long Code are performed on the basis of the system information.