Motorola Inc said on Friday it is buying privately held RadioFrame Networks' iDen wireless technology business to combine it into its own network equipment unit.

Motorola, which invented the iDen mobile phone network technology, said RadioFrame's business would expand its portfolio of wireless base stations for networks using noncontiguous spectrum that are often used outside of North America.

It did not disclose terms of the deal with Redmond, Washington-based RadioFrame.

(Reporting by Sinead Carew; Editing by Derek Caney)