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NGN 腄腍腏腉腊腌腇腀腎腒腕腂 Two-Sided Markets 腗腘 Evaluation of Platform Functions of NGN Viewed from Two-Sided Markets Theory Hidenori FJ@: 膑膜腄膌膎膞膌腺膞膅腄膍膈膋腧膿腥膍膈膋膝腄腾腧臙臞腮膄腽膘膚膉腹臰腧自腵腎膥腘腝 膟致腧膍膈膋膝腄腾腢腘腠 NGN 臤臷膍膈膋膝腄腾臬腖腳腴腑臗腡腭 NTT 腮腞 3 臋腐腰臫膁腄膏膂腵膭臠腚腲腢腡腦腘腠腌腲腕腧 NGN 腥腏腌腠腨膪臆臯腤 腣腖腪腗腪腤膒膙膈膋膐腼腄膖膻臁腖腳腲臍臘腫腡腋腲腑腜腧腂腒腵臩腞腠腨臓臼臂腧膲腵膸腬膾腪腗腘腠腌腲臔腡腨臉臚膳腢臉膢膳腵腟腤腓膰腢腘腠腐腴腖腳腲腯 腍腥腤腞腠腒腝 two-sided markets 腼膂腵膥腘腠 NGN 腧臡臱膭腧腋腱腥腟腌腠臕臝腚腲腈腀腐腀腋NGN, two-sided markets, 膒膙膈膋膐腼腄膖腧膮腧膮腁腔臏膬腤腹膔膛膇膓腄膕膞膀 Key words : NGN, two-sided markets, platform, subscription externality, usage externality, indirect externality, marginal cost, multi-homing 1. 腅腁腆腃 膑膜腄膌膎膞膌腺膞膅腄膍膈膋 膠膧 膜腄膌膎膞膌腈腆 腧臀1 腢腢腭腥膦膴 腮膣腤腣腧膆腻膞膜腄膌/膐腷腺膛臑膶腵腨 腙腬腢腘腠腺膞膅腄膍膈膋臰腧臲腬腾腑腥腤腲膡腻腹膛膂腧膯腤 腣腭膱臎臛腧腺膞膅腄膍膈膋腧至臹腥膽腵腨腑腟腔腰腳腲腯腍腥腤腞腠腒 腕腍腘腝臢膥腚腲腝腬腥至臢臄 臦腨 腺膞膅腄膍膈膋腧臨臹腢腖膃腳腧至臹腵臌腦腎腝臤臷膍膈膋膝腄腾 Next Generation Network, 膠膧 NGN腈腆 臬腘腴腑臗腡腭 NTT 腮腞 3 臋腐腰臫膁腄膏 膂腵膭臠腚腲腢腡腦腘腠腌腲 (NTT [2007])腕腧 NGN 腥腟腌腠腨腕腳腪腡腧腺膞膅腄 膍膈膋腡腨臁腖腳腠腌腤腐腞腝腯腍腤腖腪腗 腪腤膒膙膈膋膐腼腄膖膻臁腭腸腒腖腳腠 腌腲腕腢腐腰腁腇/臖腘臒膨腭膩 腚腲 BP [2008]腤腣腢腒腤膺膹腛腰腳腠腌腲臣腥膼臸臺臜腧腐腰腜腧 臢臄膭腥膡腧臸腵膪腜腍腢腚腲膾腭臍 腰腳腲 2 腘腐腘NGN 腧膒膙膈膋膐腼腄膖膻 腥腟腌腠腼膂腔腥臻腘腝膾腨臶臭腤 腜腕腡臔腡腨腧臥膫臉臚膵腥腏 膀膜腄膎膛腂膗膊腹腸腂膂膅膊腹腄膃膳臃臧 1 腅腱臮腧腡腦 腅腱[2007]腆 腥腯腳腩腁 2007 9 臎臛腧膑膜腄膌膎膞膌腧腻腹臶腨 2,776 腘腠腌腲腧腡腁 臷腉腧54.3腉 腢臵臊腖腳腲腀 2 腝腢腎腩腅腱[2008] 腤腣腀 53

Global Media Studies - NGN Two-Sided Marketsgmsweb.komazawa-u.ac.jp/academics/jogms02/2_53.pdf · 2015. 10. 15. · Evaluation of Platform Functions of NGN Viewed from Two-Sided Markets

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Page 1: Global Media Studies - NGN Two-Sided Marketsgmsweb.komazawa-u.ac.jp/academics/jogms02/2_53.pdf · 2015. 10. 15. · Evaluation of Platform Functions of NGN Viewed from Two-Sided Markets

NGN ����������Two-Sided Markets �

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Evaluation of Platform Functions of NGN Viewed

from Two-Sided Markets Theory

Hidenori FJ@:

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�����r NGN, two-sided markets, MN��OP�Q� s� t�u� v� t�u� w !t�u� xy"�� z{|}�~��

Key words : NGN, two-sided markets, platform, subscription externality, usage externality, indirect

externality, marginal cost, multi-homing

1. � � � �

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Page 2: Global Media Studies - NGN Two-Sided Marketsgmsweb.komazawa-u.ac.jp/academics/jogms02/2_53.pdf · 2015. 10. 15. · Evaluation of Platform Functions of NGN Viewed from Two-Sided Markets

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6 $�v�� Eisenmann et al. [2006] �/-7 H^�XQZ �.� ¸;P�� ¹�W �;=?�$}� ���30_�+��� 8`ab0cº$�� QdP� 0C4'$�+�,�0?�- ,��''�� NGN�F¡GHW �;����.� T»H*�8`ab0GH���-

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Page 3: Global Media Studies - NGN Two-Sided Marketsgmsweb.komazawa-u.ac.jp/academics/jogms02/2_53.pdf · 2015. 10. 15. · Evaluation of Platform Functions of NGN Viewed from Two-Sided Markets

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Page 4: Global Media Studies - NGN Two-Sided Marketsgmsweb.komazawa-u.ac.jp/academics/jogms02/2_53.pdf · 2015. 10. 15. · Evaluation of Platform Functions of NGN Viewed from Two-Sided Markets

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Page 5: Global Media Studies - NGN Two-Sided Marketsgmsweb.komazawa-u.ac.jp/academics/jogms02/2_53.pdf · 2015. 10. 15. · Evaluation of Platform Functions of NGN Viewed from Two-Sided Markets

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