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  1. 1. SPNPのはなし 九州大学 実積寿也
  2. 2. 背景1:固定BB需要のピークア ウト Global ICT developments, 2001-2013 100 90 Individuals using the Internet 80 Fixed-telephone subscriptions 70 Per 100 inhabitants 96.2 Mobile-cellular telephone subscriptions Active mobile-broadband subscriptions 60 Fixed (wired)-broadband subscriptions 50 40 38.8 30 29.5 20 16.5 10 9.8 0 2001 2002 2003 2004 2005 2006 2007 出典:ITU Statistics (http://www.itu.int/ict/statistics)より作成 2008 2009 2010 2011 2012* 2013*
  3. 3. 背景2:トラフィックの急増 PB per month 90,000 80,000 Fixed Internet 70,000 Managed IP 60,000 Mobile data 50,000 40,000 30,000 20,000 10,000 0 2012 2013 2014 2015 出典:Cisco Visual Networking Index: Forecast and Methodology, 2012–2017 2016 より作 2017
  4. 4. 実効品質の低下? http://tjitsuzumi.blogspot.jp/2013/10/with.html
  5. 5. お金の流れとトラフィックの流 れ Tier 1 ISP Regional ISP Tier 1 ISP Regional ISP Local ISP Local ISP Regional ISP
  6. 6. What was SPNP? It is important for a quality-of-service concept to develop and implement a price model for the interconnection between different networks that is not only volume-based but also explicitly quality-based. … Since the permanent implementation of defined quality parameters causes higher costs than best effort traffic, a network operator will only guarantee this quality if the forwarding network pays appropriate prices which are higher than those for besteffort. …. The individual “original ISP” will bill its customers accordingly. The commercial service and content providers will send the majority of all QoS data packets, so they will also bear the bulk of the costs. … (Kruse (2008) Network Neutrality and Quality of Service, Intereconomics, January/February, pp.25-30.
  7. 7. WCITに向けたETNOの提案 Perpetuating an 'unpaid peering' approach for IP Interconnection that developed when traffic patterns were largely symmetric can hamper the incentive to invest in transport capacity and network quality. By proposing a charging principle that is well tested and has delivered efficient results ETNO is not trying to bring back the circuit switched architecture of the PSTN. The main aim is to promote , where appropriate, a charging principle which re‐aligns costs and revenues by assuring that the agents are accountable for the costs they incur. The sending party pays principle would not be imposed but commercially negotiated. https://www.google.co.jp/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&ved=0CD8QFjAC&url=http%3A%2F%2Fwww.cept.org%2FDocuments%2Fcomitu%2F6841%2FINFO-7r1_ETNO&ei=DHaMUpPBKYW4kgXdnYD4Aw&usg=AFQjCNGiragQzdXwMCAzyne7Vws1az8Fyw&sig2=JtlZRxKooE7-4nBbSKaiQ&bvm=bv.56643336,d.dGIより筆者作成 Sep. 2012
  8. 8. BERECの対応 If “bill & keep” were to be replaced by SPNP then the ISP providing access could exploit the physical bottleneck for traffic exchange and derive monopoly profits, requiring regulatory intervention. ETNO’s proposed end-to-end SPNP approach to data transmission is totally antagonistic to the decentralised efficient routing approach to data transmission of the Internet. The connection-oriented nature of end-to-end SPNP, with its focus on charging based on the actual volumes or value of the traffic, would represent a dramatic change from the existing charging framework operating on the Internet. Finally, it is worth pointing out that ETNO’s proposals do not seem to have taken account of the fact that the request for the data flow usually stems not from the CAP but from the retail Internet access provider’s own customer (who “pulls” content provided by the CAPs, and from whom the ISP is already deriving revenues). http://berec.europa.eu/files/document_register_store/2012/11/BoR(12)120rev .1_BEREC_Statement_on_ITR_2012.11.14.pdfより筆者作成 Nov. 14. 2012
  9. 9. WCIT-12への提案 出典:http://www.itu.int/en/wcit-12/Documents/draft-future-itrs-public.pdf
  10. 10. WCIT-12での議論 出典:http://www.soumu.go.jp/main_content/000195974.pdf
  11. 11. WCIT-12での結末 出典:http://www.soumu.go.jp/main_content/000195974.pdf