These slides are based on my research from 2009 till now, showing the actual download speeds of Japanese household broadband users.

1. Actual broadband QoS in Japan
April 2013
Toshiya Jitsuzumi
Faculty of Economics
Kyushu University

2. MEASUREMENT METHODOLOGY

3. Methodology
• Conducted web‐based questionnaire surveys
of registered monitors
• Focused on user groups who connected from
home via wireline broadband
• Respondents were asked to answer the type
of access line and its advertised speed.
• Also they were guided to visit a speed
measurement site, and then asked to report
the test results.

4. MAJOR FINDINGS

5. Survey 2009 Survey 2011 Survey 2012 Survey 2013
From Nov. 17, 2009, From Jan. 24, 2011, From Mar. 30, 2012, From Mar. 14 , 2013,
Period
till Nov. 26, 2009 till Jan. 27, 2011 till Apr. 25, 2012* till Mar. 19, 2013.
Kanto area, including
Sample area All nation All nation Tokyo metropolitan All nation
area
NTTCom Online NTTCom Online NTTCom Online
Rakuten Research,
Research firm Marketing Solutions Marketing Solutions Marketing Solutions
Inc.
Corporation Corporation Corporation
Sample size 1,117 768 1,024 520
http://speedtest.goo.
Measurement site http://speedtest.net http://speedtest.net http://speedtest.net
ne.jp/
Location of the
measurement site
Tokyo Nearest test site Tokyo Nearest test site
Note *: Includes 3 week suspension due to the problems of the measurement site.
Settings for four surveys

6. Actual Download Speed / Advertised Download Speed
0% 10% 20% 30% 40% 50% 60%
ADSL 8M 46.0%
ADSL 10M 52.5%
ADSL 12M 34.6%
ADSL 24M 18.7%
ADSL 40M 11.2%
ADSL 50M 13.5%
cable 30M 36.6%
FTTH 100M 22.9%
Sample Average 25.6%
Survey 2009

7. Actual Download Speed / Advertised Download Speed
0% 10% 20% 30% 40% 50% 60%
ADSL, below 20Mbps 41.9%
ADSL, 20-35Mbps 25.2%
ADSL, above 35Mbps 19.1%
cable, below 20Mbps 51.0%
cable, 20-35Mbps 40.0%
cable, 35-100Mbps 44.0%
cable, above 100Mbps 22.8%
FTTH（for Multi Dwelling Unit） 22.7%
FTTH（for Single Dwelling Unit） 25.1%
Sample Average 27.2%
Survey 2011

8. Actual Download Speed / Advertised Download Speed
0% 10% 20% 30% 40% 50%
ADSL, average 25.0%
ADSL, NTT 23.8%
ADSL, Power Co. 17.4%
ADSL, non-NTT telco 25.8%
cable, average 40.0%
FTTH (for Multi Dwelling Unit), average 22.5%
FTTH (for MDU), NTT 21.8%
FTTH (for MDU), Power Co. 15.3%
FTTH (for MDU), non-NTT telco 26.3%
FTTH (for Single Dwelling Unit), average 20.0%
FTTH (for SDU), NTT 24.4%
FTTH (for SDU), Power Co. 7.0%
FTTH (for SDU), non-NTT telco 8.0%
Sample Average 24.0%
Survey 2012

9. Actual Download Speed / Advertised Download Speed
0% 10% 20% 30% 40%
NTT-group ISPs 24.4%
non-NTT telco ISPs 28.8%
vender ISPs 25.3%
Power Co ISPs 26.2%
cable ISPs 36.3%
Independent ISPs 27.0%
Other 26.5%
Survey 2011, by ISP groupe

10. Actual Download Speed / Advertised Download Speed
0% 10% 20% 30% 40% 50% 60%
ADSL, below 20Mbps 41.4%
43.0%
ADSL, 20-35Mbps 25.8%
23.1%
ADSL, over 35Mbps 19.1%
19.1%
cable, below 20Mbps 51.9%
48.8%
cable, 20-35Mbps 43.2%
32.3%
cable, 35-100Mbps 48.1%
31.6%
cable, over 100Mbps 25.9%
12.0%
FTTH (for MDU) 24.3%
19.1%
FTTH (for SDU) 26.9%
20.5% E2E fixed line
Sample Average 28.6% Wi-Fi connection
23.9%
Note: Samples for E2E fixed line are different from samples for Wi‐Fi connection.
Survey 2011: Influence of Wi‐Fi

11. Actual Download Speed / Advertised Download Speed
0% 10% 20% 30% 40% 50%
24.3%
ADSL
31.5%
39.8%
cable
41.6%
24.6%
FTTH (for MDU)
13.5%
21.4%
FTTH (for SDU)
15.8%
25.1% E2E fixed line
Sample Average
19.8% Wi-Fi connection
Note: Samples for E2E fixed line are different from samples for Wi‐Fi connection.
Survey 2012: Influence of Wi‐Fi

12. Actual /
Advertised
40%
33.3%
30%
26.1% 25.9% 25.6% 25.7%
23.5% 24.2%
20%
15.6%
10%
0%
0:00-8:00 8:00-16:00 16:00-24:00 Average
Weekdays Weekends, Holidays
Survey 2009, by time of the day

13. Actual /
Advertised
40%
35.6%
32.0% 32.6%
30%
27.1% 26.7%
21.6%
20%
10%
0%
0:00-4:00 4:00-8:00 8:00-12:00 12:00-16:00 16:00-20:00 20:00-24:00
Survey 2011, by time of the day

14. Actual Download Speed / Advertised Download Speed
Sample Average (N=363) 35.3%
FTTH1Gbps(N=63) 7.8%
FTTH200Mbps(N=34) 20.9%
FTTH100Mbps（N=155) 40.8%
FTTH, average（N=252) 29.9%
cable, average（N=42） 57.5%
ADSL, average（N=69) 41.8%
0% 20% 40% 60%
Survey 2013: tentative summary

15. 0% 20% 40% 60% 80%
Japan (Nov. 2009) 25.6%
Japan (Jan. 2011) 27.2%
Japan (Mar.-Apr. 2012) 24.0%
Japan (Mar. 2013) 35.3%
U.S. (2009, average) 51.3%
U.S. (2009, median) 44.3%
U.K. (May, 2010) 46.0%
Australia (2008Q4) 65.5%
Ireland (2008) 60.2%
Source: Created on the basis of FCC （2010）, Ofcom（2010）, and Epitiro （2009a, 2009b）, except Japan’s results.
International Comparison of software‐based measurements