NTT DoCoMo Inc. is set to invest ¥300 billion to ¥400 billion ($3.06 billion to $4.07 billion) in its Long Term Evolution (LTE) network during the next five years, The Nikkei reports.

DoCoMo's president, Ryuji Yamada, told the Global ICT Summit 2009 (an event hosted by The Nikkei and Japan's Ministry of Internal Affairs and Communications) that the carrier intends to roll out 20,000 base stations that will cover 50 percent of the Japanese population by 2014, according to the report.

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