The Internal Affairs and Communications Ministry has decided to allocate wireless spectrum to KDDI Corp. as the nation's mobile carriers seek to boost download speeds.

KDDI, Japan's second-biggest mobile carrier, will get the right to use the new 2,500 MHz spectrum after the ministry adopted a regulatory panel's recommendation Friday.

Units of both Softbank Corp., the nation's third-largest mobile carrier, and KDDI applied for spectrum, the ministry said July 10.