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Presentation on theme: "Http://sunday.joins.com/article/view.asp?aid=38003 http://www.news1.kr/articles/?2166996."— Presentation transcript:

1

2 휴대전화 network 이용 변화 추이 traffic TB 50,000 100,000 Mar 2014 May Jul Sep
Nov Jan 2015 4G smart-phone 3G smart-phone 2G/3G feature-phone 휴대전화 network 이용 변화 추이 traffic

3 ?board=ma_2&code=read&uid=25081
50 % 100 % 10대 20대 30대 40대 50대 60대 이상 연령대별 항공기에서 휴대폰사용 만족도 (2014) 국토교통부 ?board=ma_2&code=read&uid=25081 80.8 % 82.8 % 80.2 % 77.4 % 73.8 % 73.4 %

4 ?newsid= ?newsid= 50 % 30 % 70 %


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