ᚑくᄢቇℂᎿቇ⎇ⓥႎ๔
J. Fac. Sci. Tech., Seikei Univ.
Vol.45 No.2 (2008) pp.63-67
㧔․೎⎇ⓥ⾌ߦଥࠆ⺰ᢥ㧕ᰴ਎ઍࡎ࡯ࡓࡀ࠶࠻ࡢ࡯ࠢߦ߅ߌࠆ࠻࡜ࡅ࠶ࠢ․ᕈࠍ⠨ᘦߒߚേ⊛࠻࡜ࡅ࠶ࠢࠦࡦ࠻ࡠ࡯࡞ᴺߩឭ᩺ኹ↰ ᣽ᐔ㧖㧘Ⴅ ᄢ㧖㧘ዊญ ༑⟤ᄦ㧖Dynamic Traffic Control Method Based on Traffic Characteristics
in the Next Generation Convergence Home Network
Shohei TERADA㧖1, Dai HANAWA㧖2, and Kimio OGUCHI㧖3ABSTRACT㧦 The advance of broadband and ubiquitous technologies will bring us the NgCHN (Nextgeneration Convergence Home Network). This paper first introduces NgCHN architecture, and thenproposes an effective dynamic traffic control method. In the proposed method, the HGW (HomeGateWay) identifies the traffic characteristics of each home terminal in advance, calculates the optimum
timing to prevent burst collision, and then grants permission rights to the terminals to send traffic. An
experiment that verifies the effectiveness of the proposed method is also introduced. Finally ourconclusions will be given.
Keywords: Home network, Traffic characteristics, Home Gateway
㧔Received Sept. 20, 2008㧕㧝㧚ᐨ ⺰ᓥ᧪ߪࠬ࠲ࡦ࠼ࠕࡠ࡯ࡦߢ↪޿ࠄࠇߡ߈ߚ᭽‫ߥޘ‬ᯏེ߇࠺ࠖࠫ࠲࡞ൻ㧘ࡀ࠶࠻ࡢ࡯ࠢൻߐࠇߟߟ޽ࠅ㧘⌀ߩࡎ࡯ ⎇ⓥ⢛᥊ࡓࡀ࠶࠻ࡢ࡯ࠢߣ๭߫ࠇࠆߴ߈߽ߩ߇᭴▽ߐࠇߟߟ޽ࠆ‫ޕ‬ ㄭᐕ㧘࿑ 1 ߦ␜ߔࠃ߁ߦᣣᧄߦ߅ߌࠆࡉࡠ࡯࠼ࡃࡦ࠼੹ᓟ߽ࡉࡠ࡯࠼ࡃࡦ࠼ᛛⴚߣࡎ࡯ࡓࡀ࠶࠻ࡢ࡯ࠢᛛⴚߪᛛⴚߩ᥉෸ߪ⋡ⷡߒߊ㧘․ߦ FTTH (Fiber To The Home)ㅴൻߒ⛯ߌᰴ਎ઍࡎ࡯ࡓࡀ࠶࠻ࡢ࡯ࠢߣ๭ߴࠆⅣႺ߇಴ߩട౉⠪ᢙ߇ᕆჇߒߡ߅ࠅ[1]㧘2010 ᐕߦߪ 2000 ਁઙߩ⃻ߔࠆߣ⠨߃ࠄࠇࠆ‫ޕ‬ട౉߇ᦼᓙߐࠇߡ޿ࠆ‫ߩ࠼ࡦࡃ࠼࡯ࡠࡉޕ‬᥉෸ߦ઻޿㧘ኅᐸ߳ߩࠡࠟࡆ࠶࠻ࠢ࡜ࠬߩࡀ࠶࠻ࡢ࡯ࠢⅣႺߩឭଏ߽ ᰴ਎ઍࡎ࡯ࡓࡀ࠶࠻ࡢ࡯ࠢߩ᭎ⷐ߹ߚ⃻ታߩ߽ߩߣߥࠅߟߟ޽ࠆ‫ߚ߹ޕ‬㧘࠺ࠖࠫ࠲࡞ࠞࡔ ࿑ 2 ߦᰴ਎ઍࡎ࡯ࡓࡀ࠶࠻ࡢ࡯ࠢߩࠗࡔ࡯ࠫ[2, 3]ࠍ␜࡜߿ HDD (Hard Disc Drive)࡟ࠦ࡯࠳ߦઍ⴫ߐࠇࠆࠃ߁ߦ㧘㪊㪇㪇㪇ߩ AV ᯏེߩߺ߇ࡀ࠶࠻ࡢ࡯ࠢߦធ⛯ߐࠇߡ߅ࠅ㧘ઁߩ㪝㪮㪘㪚㪘㪫㪭㪛㪪㪣㪝㪫㪫㪟ว⸘㪉㪌㪇㪇㪉㪇㪇㪇ਁᄾ⚂ߔ‫⃻ޕ‬࿷ߩࡎ࡯ࡓࡀ࠶࠻ࡢ࡯ࠢߢߪ PC ߣ IP 㔚⹤㧘৻ㇱHigh quality video screens

Plenty ofSensors
located inrooms㪈㪇㪇㪇Stream down loading( Around 30 Mbps

Home network
Home network

Data communication

Refrigerator

VoIP Telephone(s)࿑㧝 ࡉࡠ࡯࠼ࡃࡦ࠼ᄾ⚂ᢙߩផ⒖=?

Home electricalapplianceseach)

FTTH
FTTH lineline

HGW

Sensor interface㪉㪇㪇㪏ᐕ㪊᦬㪉㪇㪇㪎ᐕ㪐᦬㪉㪇㪇㪎ᐕ㪊᦬㪉㪇㪇㪍ᐕ㪐᦬㪉㪇㪇㪍ᐕ㪊᦬㪉㪇㪇㪌ᐕ㪐᦬㪉㪇㪇㪌ᐕ㪊᦬㪉㪇㪇㪋ᐕ㪐᦬㪉㪇㪇㪋ᐕ㪊᦬㪉㪇㪇㪊ᐕ㪐᦬㪉㪇㪇㪉ᐕ㪐᦬㪉㪇㪇㪊ᐕ㪊᦬㪌㪇㪇

HDTV home video
storageHDTVHDTV㪈㪌㪇㪇㪇

AV terminal( >10 Mbps)

PClinkedwith
withIPIPProtocol
Protocollinked㧦Ꮏቇ⎇ⓥ⑼㔚᳇㔚ሶᎿቇኾ᡹ୃ჻ቇ↢㧦ℂᎿቇㇱᖱႎ⑼ቇ⑼ഥᢎ
㧦ℂᎿቇㇱᖱႎ⑼ቇ⑼ᢎ᝼࿑㧞 ᰴ਎ઍࡎ࡯ࡓࡀ࠶࠻ࡢ࡯ࠢࠗࡔ࡯ࠫ=?㧙㧙㔚ሶᯏེߪࠬ࠲ࡦ࠼ࠕࡠ࡯ࡦߢേ૞ߒߡ޿ࠆ‫ޕ‬ᰴ਎ઍࡎ ߹ߚ㧘ฦ࠼ࡔࠗࡦߩⷐ᳞Ꮺၞ᏷ߩᗐቯ⚿ᨐࠍ࿑ 3 ߦ␜ߔ‫ޕ‬࡯ࡓࡀ࠶࠻ࡢ࡯ࠢߢߪ㧘ߎࠇࠄߩᯏེ㘃ߦട߃㧘HDᮮゲߦߪኅᐸౝߦ㈩⟎ߐࠇࠆฦ࠼ࡔࠗࡦߩࡁ࡯࠼ᢙ㧘❑(High Definition)ⷙᩰߦኻᔕߒߚ㜞ຠ⾰ߩࡆ࠺ࠝࠬࠢ࡝ゲߦߪฦ࠼ࡔࠗࡦߦዻߔࠆන৻ࡁ࡯࠼޽ߚࠅߩᔅⷐᏪၞ

࡯ࡦ㧘ࡀ࠶࠻ࡢ࡯ࠢߦኻᔕߒߚᖱႎኅ㔚㧘ᄙ⒳ᄙ᭽ߥ࠺

᏷ࠍ␜ߔ‫ޕ‬ฦ࠼ࡔࠗࡦߩⷐ᳞Ꮺၞ᏷ࠍว⸘ߔࠆߣ㧘ᰴ਎࡯࠲ࠍขᓧߒࡀ࠶࠻ࡢ࡯ࠢߦㅍାߔࠆ࠮ࡦࠨ⟲㧘᭽‫ߥޘ‬ઍࡎ࡯ࡓࡀ࠶࠻ࡢ࡯ࠢߦߪᢙ Gbps ߩࡀ࠶࠻ࡢ࡯ࠢᏪၞ࠺࡯࠲ࠍ⫾Ⓧߔࠆࡎ࡯ࡓࠨ࡯ࡃߩᓎഀࠍᨐߚߔᄢኈ㊂ߩ᏷ߣ㧘ߘࠇએ਄ߩᏪၞ᏷ࠍ᦭ߔࠆવㅍᇦ૕߇ᔅⷐߣߥࠆ‫ޕ‬ࠬ࠻࡟࡯ࠫ࠺ࡃࠗࠬ㧘ߘߒߡࡀ࠶࠻ࡢ࡯ࠢߩ▤ℂ߿ਛ⛮ࠍⴕ߁ HGW (Home GateWay)߇෼ኈߐࠇࠆ‫ޕ‬ኅᐸౝߩฦ㧞㧚࠻࡜ࡅ࠶ࠢ․ᕈࠍ⠨ᘦߒߚᏪၞ೙ᓮᴺߩᬌ⸛ IPTV ߪࠦࡦ࠹ࡦ࠷ࡊࡠࡃࠗ࠳߆ࠄᐢၞࡀ࠶࠻ࡢ࡯ࠢ ᰴ਎ઍࡎ࡯ࡓࡀ࠶࠻ࡢ࡯ࠢߦ߅޿ߡਥⷐࠦࡦ࠹ࡦ࠷ߣ┵ᧃߣᐢၞࡀ࠶࠻ࡢ࡯ࠢߪ HGW ࠍ੺ߒߡㅢାࠍⴕ߁‫ޕ‬ࠍㅢߓߡ㈩ାߐࠇ㧘࡙࡯ࠩߪ HD ຠ⾰ߩᤋ௝ࠍࠝࡦ࠺ࡑߥࠆേ↹߿㖸ჿ࠺࡯࠲ߩࠬ࠻࡝࡯ࡒࡦࠣォㅍࠍⴕ߁ࠕࡊࡦ࠼ߢࡊࡠࡃࠗ࠳߆ࠄ࠳࠙ࡦࡠ࡯࠼ߒ㧘ࡎ࡯ࡓࠨ࡯ࡃߦ

࡝ࠤ࡯࡚ࠪࡦߪⷙೣ⊛ߥࡃ࡯ࠬ࠻ࠍࡒ࡝⑽න૏ߢㅍାߔ⸥㍳ߒᅢ߈ߥߣ߈ߦᭉߒ߻ߎߣ߇ߢ߈ࠆ‫ޕ‬IPTV ߪᰴ਎ઍࠆ௑ะࠍ᦭ߔࠆ‫ޕ‬േ↹ࠬ࠻࡝࡯ࡒࡦࠣࠕࡊ࡝ࠤ࡯࡚ࠪࡦࡎ࡯ࡓࡀ࠶࠻ࡢ࡯ࠢߦ߅ߌࠆਥⷐࠦࡦ࠹ࡦ࠷ߩ৻ߟߣߥࠆ‫ߩߟ৻߁߽ߪࠢ࡯ࡢ࠻࠶ࡀࠨࡦ࠮ޕ‬ਥⷐࠦࡦ࠹ࡦ࠷ߣ

ߢ޽ࠆ DVTS (Digital Video Transport System) [4]ߪᐔဋ

30Mbps ߢ࠺࡯࠲ォㅍࠍⴕ߁߇㧘ࡒ࡝⑽න૏ߢ᷹ቯࠍⴕ

ߥࠆ‫ޕ‬ኅᐸౝߩ࠮ࡦࠨ߆ࠄขᓧߐࠇߚ᭽‫ࠍ࠲࡯࠺ߥޘ‬ಽ

߁ߣ࿑ 4 ߩࠃ߁ߦ⍍㑆⊛ߦ 100Mbps એ਄ߩ࠺࡯࠲ࠍ಴ജᨆߒ㧘ᣣᏱ↢ᵴߦࡈࠖ࡯࠼ࡃ࠶ࠢߔࠆߎߣߢߩ↢ᵴᡰេߔࠆߎߣ߇ႎ๔ߐࠇߡ޿ࠆ[5]‫ޕ‬ᰴ਎ઍࡎ࡯ࡓࡀ࠶࠻ࡢ࡯

ࠍⴕ߁ߎߣ߇น⢻ߦߥࠆ‫ޕ‬ࠢߢߪߎߩࠃ߁ߥࡃ࡯ࠬ࠻ဳ࠻࡜ࡅ࠶ࠢ߇ⶄᢙォㅍߐࠇਛ⛮ࡁ࡯࠼ߢࠝ࡯ࡃ࡜࠶ࡊߒ㧘ࡃ࠶ࡈࠔࠝ࡯ࡃࡈࡠ࡯߇

 ኅᐸౝ┵ᧃߩ࠼ࡔࠗࡦಽ㘃⊒↢ߔࠆߎߣߦࠃࠅ㧘ຠ⾰ഠൻࠍᒁ߈⿠ߎߔน⢻ᕈ߇޽ HGW ߣࡎ࡯ࡓࠨ࡯ࡃࠍ㒰ߊኅᐸౝߩ┵ᧃߪએਅߩ 5ࠆ‫ޕ‬ߟߩ࠼ࡔࠗࡦߦಽ㘃ߐࠇࠆ‫ޕ‬ฦ࠼ࡔࠗࡦߦ฽߹ࠇࠆᯏེ
࡮ SN (Sensor Network)࠼ࡔࠗࡦ

Traffic rate [Mbps]

Tr㘃ࠍวࠊߖߡ␜ߔ‫ޕ‬affiฦ⒳࠮ࡦࠨ㧘࠺࡯࠲ಣℂ┵ᧃ㧘ขᓧ࠺࡯࠲߿ࡧࠖࠫࡘ

cratࠕ࡞ൻߒߚ࠺࡯࠲ߩ◲ᤃ⴫␜┵ᧃ
࡮ AV ࠼ࡔࠗࡦe[M㜞ຠ⾰࠺ࠖࠬࡊ࡟ࠗ㧘ࠝ࡯࠺ࠖࠝᯏེ
࡮ PC ࠼ࡔࠗࡦPC㧘๟ㄝᯏེTime[s]Time [s]࡮ Tel/ Fax ࠼ࡔࠗࡦIP 㔚⹤㧘Fax

DVTS traffic measured by around one secondᄙ᭽ߥᖱႎኅ㔚㪈㪇㪇
10 [Gbp Total bandwidths]

Bandwidth [bps]1G100M

10M

1M

100K

10K

AVDomain

PCDomain

Tel/ FaxDomain㪫㫉㪸㪽㪽㫀㪺㩷㫉㪸㫋㪼㩷㪲㪤㪹㫇㫊㪴࡮ HA (Home Appliance)࠼ࡔࠗࡦ

1 [Gbps
100

[ Mb]

ps]

10[Mbps]1[ Mbps]

10㪏㪇
㪍㪇
㪋㪇
㪉㪇
㪇

HADomain㪇
SN
Domain100

Number of nodes㪉㪇㪋㪇㪍㪇㪫㫀㫄㪼㩷㪲㫄㫊㪴㪏㪇

DVTS traffic measured by around one millisecond1000࿑㧠 &865 ࠻࡜ࡅ࠶ࠢߩ․ᕈ
㪈㪇㪇࿑㧟 ฦ࠼ࡔࠗࡦߩⷐ᳞Ꮺၞ᏷㧙㧙 ࡃ࡯ࠬ࠻࠻࡜ࡅ࠶ࠢߩࠝ࡯ࡃ࡜࠶ࡊߦࠃࠆ ࡁ࡯࠼㑆ߩ࡝ࡦࠢᏪၞ᏷ߪోߡ 97.7bps㧘࡝ࡦࠢㆃᑧߪ

10ms ߣߒߚ‫ ߪߦࠢ࠶ࡅ࡜࠻࠻ࠬ࡯ࡃޕ‬DVTS ࠺࡯࠲ࠍᓇ㗀ߩ᷹ቯ േ↹ࠬ࠻࡝࡯ࡒࡦࠣ࠻࡜ࡅ࠶ࠢߩࠝ࡯ࡃ࡜࠶ࡊߦࠃࠆ

↪޿ߚ‫ޕ‬RSVP ࡄ࡜ࡔ࡯࠲ߢ޽ࠆ“Bucket size”ߣ“Rate”ࠍ

ຠ⾰߳ߩᓇ㗀ࠍ᷹ቯߔࠆߚ߼㧘100Mbps ߩᏪၞ᏷ࠍᜬߟᄌൻߐߖ㧘ߘࠇߙࠇࡄࠤ࠶࠻ࡠࠬ߇⊒↢ߒߥ޿୯ࠍ᷹ቯવㅍ࡝ࡦࠢߦ 3 ᧄߩ DVTS ࠻࡜ࡅ࠶ࠢࠍᵹߔታ㛎ⅣႺࠍ

ߒߚ‫ߢߎߎޕ‬㧘“Bucket size”ߪਛ⛮ࡁ࡯࠼ߦ߅ߌࠆ࠺࡯᭴▽ߒ㧘ࡄࠤ࠶࠻ࡠࠬࠍ᷹ቯߒߚ‫ޕ‬᷹ቯ♽ࠍ࿑ 5 ߦ␜ߔ‫ޕ‬࠲ߩㅍା⸵นᮭࠍ⴫ߔ࠻࡯ࠢࡦࠍ଻ᜬߔࠆߚ߼ߩࡃ࠶ࡈ

PC ߆ࠄฃା PC ߹ߢߩ࡝ࡦࠢߪᏪၞ᏷ 100Mbps ߩၞࠍߘࠇߙࠇ␜ߔ‫ޕ‬ ㅍା PCn (n=1,2,3)߆ࠄฃା PCn ߹ߢ DVTS ࠻࡜ࡅ࠶ࠢ

߳࡝ࡦࠢߩᏪၞ᏷ࠍභ᦭ߔࠆ 97.7Mbps ߩࡃ࠶ࠢࠣ࡜࠙

ฦ DV ࠞࡔ࡜ߣㅍା PC ߪ IEEE1394 ߢធ⛯ߐࠇ㧘ฦㅍାࠔࡔࡕ࡝ߩࠨࠗ࠭ࠍ㧘“Rate”ߪ RSVP ߦࠃࠅ੍⚂ߔࠆᏪ

Ethernet ࠞ࠹ࠧ࡝ 5e ࠤ࡯ࡉ࡞ߢ᭴ᚑߐࠇߡ޿ࠆ‫ޕ‬ ࠪࡒࡘ࡟࡯࡚ࠪࡦ㐿ᆎ߆ࠄ 0.3 ⑽ᓟߦࡁ࡯࠼ n0 ߆ࠄ n4ࠍᵹߒ㧘10 ಽ㑆⸘᷹ߒߚᚲ㧘ᐔဋ 42.6%ߩࡄࠤ࠶࠻ࡠࠬ

ࡦ࠼࠻࡜ࡅ࠶ࠢࠍᵹߒ㧘0.5 ⑽ᓟߦ n1 ߆ࠄ n5 ߳ࡃ࡯ࠬ࠻ߣ↹㕙਄ߦߪᄙ㊂ߩࡉࡠ࠶ࠢࡁࠗ࠭߇⊒↢ߒߚ‫ߪࠇߎޕ‬࠻࡜ࡅ࠶ࠢࠍㅍାߒߚ‫ ߪࡦ࡚ࠪ࡯࡟ࡘࡒࠪޕ‬4 ⑽ᓟߦࡃHUB1 ߦ߅޿ߡ DVTS ࠻࡜ࡅ࠶ࠢߩࡃ࡯ࠬ࠻߇ࠝ࡯ࡃ࡜࠶ࠢࠣ࡜࠙ࡦ࠼࠻࡜ࡅ࠶ࠢ㧘4.1 ⑽ᓟߦࡃ࡯ࠬ࠻࠻࡜ࡅ࠶

࠶ࡊߒ㧘ࡃ࠶ࡈࠔࠝ࡯ࡃࡈࡠ࡯߇⊒↢ߒߚߚ߼ߣ⠨߃ࠄࠢࠍ⚳ੌߒߚ‫ߪߢࡦ࡚ࠪ࡯࡟ࡘࡒࠪᧄޕ‬㧘ࡃ࠶ࠢࠣ࡜࠙ࠇࠆ‫ᧄޕ‬᷹ቯ⚿ᨐࠃࠅᰴ਎ઍࡎ࡯ࡓࡀ࠶࠻ࡢ࡯ࠢߢߪ࠻ࡦ࠼࠻࡜ࡅ࠶ࠢ߇࡝ࡦࠢᏪၞࠍోߡභ᦭ߔࠆ᭴ᚑߣߥߞ࡜ࡅ࠶ࠢ․ᕈࠍ⠨ᘦߒߚᏪၞ೙ᓮᴺߩᔅⷐᕈ߇᣿ࠄ߆ߣߡ޿ࠆߚ߼㧘RSVP ߩലᨐࠍᱜߒߊ᷹ቯߢ߈ࠆ♽ߦߥߞߥߞߚ‫ޕ‬ߡ޿ࠆ‫ޕ‬ ࠪࡒࡘ࡟࡯࡚ࠪࡦ⚿ᨐࠍ࿑ 7 ߦ␜ߔ‫ࡈ࡜ࠣޕ‬ਛฝ਄ߩ ࠬ࠻࡝࡯ࡒࡦࠣࠕࡊ࡝ࠤ࡯࡚ࠪࡦߦኻߔࠆࡂ࠶࠴ࡦࠣ㗔ၞߢߪࡄࠤ࠶࠻ࡠࠬ߇⊒↢ߖߕ㧘DVTS ࠻࡜ࡅ࠶ࠢߦ߅ߌࠆ RSVP ߩᦨㆡߥࡄ࡜ࡔ࡯࠲⸳ቯߪ4582 ߩ᦭ലᕈߩ⹏ଔ ᧄ⎇ⓥߢߪࠬ࠻࡝࡯ࡒࡦࠣࠕࡊ࡝ࠤ࡯࡚ࠪࡦߦኻߔࠆᏪ ၞ ೙ ᓮ ᴺ ߣ ߒ ߡ 㧘 RSVP (Resource reSerVation“Bucket size” 83KByte㧘“Rate” 30Mbps ߣ޿߁ߎߣ߇᣿ࠄ߆ߣߥߞߚ‫ޕ‬Protocol)[6]ߩ᦭ലᕈߩ⹏ଔࠍࠪࡒࡘ࡟࡯࡚ࠪࡦߦࠃࠅⴕ ⚿⺰ߣߒߡ㧘ߘࠇߙࠇߩࠕࡊ࡝ࠤ࡯࡚ࠪࡦߩ࠻࡜ࡅ࠶ߞߚ‫࠲࡯࡟ࡘࡒࠪࠢ࡯ࡢ࠻࠶ࡀߪߦࡦ࡚ࠪ࡯࡟ࡘࡒࠪޕ‬ࠢ․ᕈߦኻߒߡ㧘ᦨㆡߥࡄ࡜ࡔ࡯࠲⸳ቯࠍㆡ↪ߔࠆߎߣns-2[7]ࠍ↪޿ߚ‫ޕ‬RSVP ߪฦ࠺࡯࠲ߩᔅⷐᏪၞ᏷ࠍਛ⛮ࠍ᧦ઙߦ㧘RSVP ߪ᦭ലߢ޽ࠆߣ޿߁ߎߣࠍ᣿ࠄ߆ߣߒ

Background trafficn0ࡁ࡯࠼ߦવ߃㧘࠺࡯࠲ォㅍߩ೨ߦ੍⚂ߔࠆߎߣߦࠃߞߡn4࠺࡯࠲ߩຠ⾰ࠍ⏕ታߦ଻⸽ߔࠆᛛⴚߢ޽ࠆ‫ޕ‬ RSVP ߪᧄ᧪ᐢၞࡀ࠶࠻ࡢ࡯ࠢ਄ߢ࠺࡯࠲ߩຠ⾰଻⸽n2ࠍⴕ߁ߚ߼ߦ⠨᩺ߐࠇߚ߇㧘ㆇ↪㕙߿ࡀ࠶࠻ࡢ࡯ࠢ਄ࠍᵹࠇࠆ࠺࡯࠲ߩ࡞࡯࠹ࠖࡦࠣ߇ⶄ㔀ߦߥࠆߎߣ㧘ߘߒߡn3ࡀ࠶࠻ࡢ࡯ࠢߩ᜛ᒛᕈ߇ૐ޿ߎߣߥߤߩℂ↱߆ࠄ᥉෸ߒn1ߡ޿ߥ޿‫ߒ߆ߒޕ‬ኅᐸౝߢߪᵹࠇࠆ࠺࡯࠲߇޽ࠆ⒟ᐲᗐቯߢ߈㧘࡞࡯࠹ࠖࡦ߽ࠣⶄ㔀ߦߥࠄߕ㜞޿᜛ᒛᕈ߇ⷐ᳞

DVTS traffic with RSVPߐࠇߥ޿‫ޕ‬ᓥߞߡ RSVP ߪࡎ࡯ࡓࡀ࠶࠻ࡢ࡯ࠢߦㆡߒߚn5ࡊࡠ࠻ࠦ࡞ߦߥࠅᓧࠆ‫ޕ‬RSVP ߩ⹏ଔߦ↪޿ߚࠪࡒࡘ࡟
࿑㧢 4582 ⹏ଔ↪ࠪࡒࡘ࡟࡯࡚ࠪࡦࡕ࠺࡞

࡯࡚ࠪࡦࡕ࠺࡞ࠍ࿑ 6 ߦ␜ߔ‫ޕ‬DV䉦䊜䊤1

DV䉦䊜䊤2

DV䉦䊜䊤3

ฃାPC1

ㅍାPC1

DVTS䊃䊤䊍䉾䉪㬍3
ㅍାPC2

ฃାPC2
HUB1

ㅍାPC3

HUB2
䊈䉾䊃䊪䊷䉪
䉝䊅䊤䉟䉱

ฃାPC3

Bucket size [KByte]㪈㪌㪇࿑㧡 ࡃ࡯ࠬ࠻࠻࡜ࡅ࠶ࠢࠝ࡯ࡃ࡜࠶ࡊߩ᷹ቯ♽

㪈㪇㪇
83
㪌㪇
30

㪇
㪉㪇

㪋㪇

㪍㪇

Rate [Mbps]

㪏㪇࿑㧣 4582 ⹏ଔࠪࡒࡘ࡟࡯࡚ࠪࡦ⚿ᨐ

㧙㧙

㪈㪇㪇

 ࠻࡜ࡅ࠶ࠢ․ᕈߩ࠺࡯࠲ࡌ࡯ࠬࠍ↪޿ߚേ⊛ߚ‫ߒ߆ߒޕ‬㧘RSVP ߩᰳὐߣߒߡ㧘੐೨ߦฦ࠻࡜ࡅ࠶ࠢ

Ꮺၞ೙ᓮᴺߩឭ᩺ߣᬌ⸽ߩ․ᕈࠍᛠីߒᦨㆡߥࡄ࡜ࡔ࡯࠲ࠍഀࠅᒰߡߥߌࠇ߫ߥ
ࠄߥ޿ߎߣ㧘RSVP ࠍㆡ↪ߒߥ޿࠻࡜ࡅ࠶ࠢߪࡃ࡯ࠬ࠻

 ࿑ 9 ߦឭ᩺ߔࠆ࠻࡜ࡅ࠶ࠢ․ᕈߩ࠺࡯࠲ࡌ࡯ࠬࠍ↪޿ߩࠝ࡯ࡃ࡜࠶ࡊߦࠃࠅࡄࠤ࠶࠻ࡠࠬ߇⊒↢ߒຠ⾰ഠൻ߇ߚേ⊛Ꮺၞ೙ᓮᴺߩᵹࠇࠍ␜ߔ‫ޕ‬⿠߈ߡߒ߹߁ߎߣ߇᜼ߍࠄࠇ㧘RSVP ߩ೑↪ߛߌߢߪᩮ1)ᧄ⊛ߥ⸃᳿ߦߪߥࠄߥ޿‫ޕ‬ᣂߚߦធ⛯ߐࠇߚᯏེ߇ೋ߼ߡ࠻࡜ࡅ࠶ࠢࠍㅍାߔࠆߣ߈ߦ㧘ᥳቯ⊛ߦ࠻࡜ࡅ࠶ࠢ․ᕈࠍ࠺࡯࠲ࡌ࡯ࠬ
ൻߔࠆ‫ߪࠬ࡯ࡌ࠲࡯࠺ޕ‬ᔅⷐߦᔕߓߡ਄ᦠ߈ᦝᣂߐ ਛ⛮ࡁ࡯࠼ߦ߅ߌࠆ࠻࡜ࡅ࠶ࠢ․ᕈߩ

ࠇࠆ‫ޕ‬2)࠺࡯࠲ࡌ࡯ࠬൻߩᬌ⸛┵ᧃ A ߇ࡒ࡝⑽න૏ߩࡃ࡯ࠬ࠻․ᕈࠍ᦭ߔࠆ࠻࡜ࡅ ࡒ࡝⑽න૏ߩࡃ࡯ࠬ࠻࠻࡜ࡅ࠶ࠢߩࠝ࡯ࡃ࡜࠶ࡊࠍ࿁

࠶ࠢࠍㅍାߔࠆ႐ว㧘੐೨ߦ HGW ߦ࠻࡜ࡅ࠶ࠢㅍㆱߔࠆᣇᴺߣߒߡ㧘ਛ⛮ࡁ࡯࠼ߦ߅ߌࠆ࠻࡜ࡅ࠶ࠢ․ᕈ

ାߩ⸵นࠍ᳞߼ࠆࡄࠤ࠶࠻ࠍㅍାߔࠆ‫ޕ‬3.1) ࡒ࡝⑽න૏ߩࡃ࡯ࠬ࠻․ᕈࠍ᦭ߔࠆ࠻࡜ࡅ࠶ࠢ߇ઁ

ߩ࠺࡯࠲ࡌ࡯ࠬൻߣ㧘࠺࡯࠲ࡌ࡯ࠬൻߐࠇߚ․ᕈࠍᔕ↪

ߦᵹࠇߡ޿ߥ޿႐วߦߪ㧘HGW ߪ┵ᧃ A ߦㅍାࠍߔࠆേ⊛Ꮺၞ೙ᓮᴺࠍឭ᩺ߔࠆ[8]‫ޕ‬ ᧄឭ᩺ᣇᑼߦ߅ߌࠆ೨ឭߣߒߡ㧘ࡀ࠶࠻ࡢ࡯ࠢ࠻ࡐࡠ

⸵นߔࠆࡄࠤ࠶࠻ࠍㅍାߒ㧘┵ᧃ A ߇⸵นࡄࠤ࠶࠻ࠫߦߪࠬ࠲࡯ဳࠍ↪޿ࠆ‫ޕ‬ᓥߞߡᧄឭ᩺ᣇᑼߢߪਛ⛮ࡁࠍฃߌขߞߚᤨὐߢ࠻࡜ࡅ࠶ࠢߩㅍାࠍ㐿ᆎߔࠆ‫ޕ‬࡯࠼ߣ HGW ߪห⟵ߣߥࠆ‫ࠬ࡯ࡌ࠲࡯࠺ޕ‬ൻߔࠆ㗄⋡ࠍ3.2) A એᄖߩ┵ᧃ߇ࡃ࡯ࠬ࠻․ᕈࠍ᦭ߔࠆ࠻࡜ࡅ࠶ࠢࠍ

ࡕ࠺࡞ൻߒߚࠗࡔ࡯ࠫࠍ࿑ 8 ߦ␜ߔ‫ޕ‬HGW ߇࠺࡯࠲ࡌᣢߦㅍାߒߡ޿ࠆ႐ว㧘┵ᧃ A ߆ࠄߩㅍା⸵นࠍ᳞࡯ࠬൻߔࠆ࠻࡜ࡅ࠶ࠢ․ᕈߩ㗄⋡ߪ IBG (Inter Burst Gap)㧘

߼ࠆࡄࠤ࠶࠻ࠍฃߌขߞߚ HGW ߪ㧘࠺࡯࠲ࡌ࡯ࠬ

IFG (Inter Frame Gap)㧘ㅍฃା IP ࠕ࠼࡟ࠬ㧘UDP ߿ TCP߆ࠄฦ࠻࡜ࡅ࠶ࠢߩ․ᕈࠍෳᾖߒ㧘ࠝ࡯ࡃ࡜࠶ࡊ߇╬ߩォㅍࡊࡠ࠻ࠦ࡞㧘ࡐ࡯࠻⇟ภ㧘ߘߒߡㅍା┵ᧃߣ
HGW 㑆ߩ MRTT (Mean Round Trip Time)㧘๟ᦼ T ߩ 8 㗄⊒↢ߒߥ޿࠲ࠗࡒࡦࠣࠍ▚಴ߒ৻ቯᤨ㑆ᓙᯏߔࠆ‫ޕ‬4)⋡ߣߔࠆ‫ޕ‬IFGHGW ߪ࠻࡜ࡅ࠶ࠢߩㅍାࠍ㐿ᆎߔࠆࠃ߁ᜰ␜ߔࠆࡄࠤ࠶࠻ࠍ┵ᧃ A ߦㅍାߔࠆ‫ ᧃ┵ޕ‬A ߪߎߩࡄࠤ࠶࠻ࠍฃାᓟ㧘࠻࡜ࡅ࠶ࠢߩㅍାࠍ㐿ᆎߔࠆ‫ޕ‬䋫ォㅍ䊒䊨䊃䉮䊦䇮IP䉝䊄䊧䉴䇮䊘䊷䊃⇟ภ䇮MRTT䇮FPB ᧄឭ᩺ᣇᑼߩ․ᓽߣߒߡ㧘ฦ┵ᧃߩหᦼ೙ᓮ߇ਇᔅⷐߢ޽ࠆߎߣ㧘࠰ࡈ࠻࠙ࠚࠕߩߺߩ◲ᤃߥዉ౉㧘㜞޿ࡀ࠶࠻ࡢ࡯ࠢߩ೑↪ല₸ߥߤ߇਄ߍࠄࠇࠆ‫ޕ‬

PacketPacketIBG ឭ᩺ᣇᑼߩᬌ⸽ࠍⴕߞߚታ㛎♽ࠍ࿑ 10 ߦ㧘ㅍାߒߚࡃ࡯ࠬ࠻࠻࡜ࡅ࠶ࠢߩ⹦⚦ࠍ⴫ 1 ߦ㧘2 ಽ㑆ߩ᷹ቯ⚿ᨐࠍ⴫ 2 ߦ␜ߔ‫ᧄ߅ߥޕ‬ታ㛎ߦ߅޿ߡ㧘HGW ߪ࠺࡯࠲ࡌ࡯

๟ᦼTTimeBurst Trafficࠬൻ㗄⋡ࠍ੐೨ߦขᓧߒߡ޿ࠆ߽ߩߣߔࠆ‫ޕ‬࿑㧤 ࠺࡯࠲ࡌ࡯ࠬൻ㗄⋡ߩࡕ࠺࡞ൻࠗࡔ࡯ࠫ
WAN

HGW

Device A

Burst traffic
generator1

Device B

Signaling packet

HUB

HGW

Computingperiodat HGW
WTNetwork
Analyzer1

Network
Analyzer1

Burst traffic
generator2

ACK packet

MRTTBTime࿑  ឭ᩺ᣇᑼㆡ↪ታ㛎♽Single burst fromdevice A to WAN⴫  ㅍାࡃ࡯ࠬ࠻࠻࡜ࡅ࠶ࠢߩ⹦⚦Single burst fromdevice B to WAN

Burst
Time
150
[ms]

࿑㧥 ឭ᩺ᣇᑼߦ߅ߌࠆ࠲ࠗࡓࠪ࡯ࠤࡦࠬ㧙㧙

Idle
Time

Peak
Bit Rate

Average
Bit Rate

PacketSizeIFGFPBProtocol

350
[ms]

100
[Mbps]

28.5[Mbps]

1000[Byte]

81.5
[us]

1842

UDP ᬌ⸽⚿ᨐߩ⠨ኤ࠶ࠢ․ᕈࠍ࠺࡯࠲ࡌ࡯ࠬൻߔࠆᯏ⢻ߩዉ౉ࠍᬌ⸛ߒߚ‫ޕ‬ ࿑ 11(a)ߦឭ᩺ᣇᑼേ૞㐿ᆎ⋥ᓟ߆ࠄ 2 ಽ㑆ߩࠬ࡞࡯ࡊ

߹ߚ㧘࠺࡯࠲ࡌ࡯ࠬࠍ↪޿ߚേ⊛ߥࠝ࡯ࡃ࡜࠶ࡊ࿁ㆱᴺ࡯ࡊ࠶࠻ࠍ␜ߔ‫ޕ‬࿑ 11(a)ߪឭ᩺ᣇᑼߦ߅޿ߡ࠻࡜ࡅ࠶ࠢ

ࠢࡠ࠶ࠢหᦼࠍⴕ߁ߎߣࠍ᧦ઙߣߒߡ㧘ឭ᩺ᣇᑼߪ᦭ല

࠶࠻ࠍ㧘࿑ 11(b)ߦㅢᏱߩࡌࠬ࠻ࠛࡈࠜ࡯࠻േ૞ᤨߩࠬ࡞

ߩឭ᩺ߣᬌ⸽ࠍⴕߞߚ‫ ߩ࠲࡯࡟ࡀࠚࠫࠢ࠶ࡅ࡜࠻ޕ‬CPUࠫࠚࡀ࡟࡯࠲ߩ CPU ࠢࡠ࠶ࠢหᦼ೙ᓮࠍⴕߞߡ޿ࠆ⁁ߢ޽ࠆߎߣࠍ␜ߒߚ‫ޕ‬ᘒߢ޽ࠆߣߺߥߔߎߣ߇ߢ߈ࠆ‫⁁ߩߎޕ‬ᘒߦ߅޿ߡ㧘࠻ ᧄឭ᩺ᣇᑼߪ㧘᭽‫․ࠢ࠶ࡅ࡜࠻ߥޘ‬ᕈߦኻߒߡᔕ↪߇࡜ࡅ࠶ࠢࠫࠚࡀ࡟࡯࠲ B ߆ࠄߩ࠻࡜ࡅ࠶ࠢߪᱜߒߊ೙ᓮน⢻ߢ޽ࠅ㧘዁᧪⊛ߦᄙ᭽ߥࠨ࡯ࡆࠬࠍ෼ኈߔࠆᰴ਎ઍߐࠇࠆߎߣߢࠝ࡯ࡃ࡜࠶ࡊ߇⊒↢ߖߕ㧘߹ߚࡄࠤ࠶࠻ࡠࡎ࡯ࡓࡀ࠶࠻ࡢ࡯ࠢߩታ⃻ߦ⽸₂ߔࠆߣ⠨߃ࠄࠇࠆ‫ޕ‬߽ࠬ⊒↢ߒߥ߆ߞߚ‫ޕ‬ ᧄ⚿ᨐࠃࠅ㧘࠻࡜ࡅ࠶ࠢࠫࠚࡀ࡟࡯࠲ߩ CPU ࠢࡠ࠶ࠢ㧠㧚ෳ⠨ᢥ₂หᦼࠍⴕ߁ߎߣࠍ᧦ઙߣߒߡ㧘ឭ᩺ᣇᑼߪ᦭ലߢ޽ࠆߎߣࠍ␜ߒߚ‫ޕ‬ኅᐸౝߦ߅޿ߡ㧘ᧄⓂߢ␜ߒߚࠃ߁ߥᕆỗ[1] ✚ോ⋭, “ࡉࡠ࡯࠼ࡃࡦ࠼ࠨ࡯ࡆࠬ╬ߩᄾ⚂ᢙ(ᐔᚑ20 ᐕ 3 ᦬ᧃ)”, ᐔᚑ 20 ᐕ 6 ᦬ 17 ᣣ⊒⴫(ႎ㆏⾗ᢱ),

ߥࡒ࡝⑽න૏ߩࡃ࡯ࠬ࠻․ᕈࠍ᦭ߔࠆ┵ᧃߩᢙߪ޽߹ࠅ

accessed Sept. 16/2008Ⴧടߔࠆߎߣ߇ᗐቯߐࠇߥ޿ߚ߼㧘CPU ߩࠢࡠ࠶ࠢหᦼ

http://www.soumu.go.jp/s-news/2008/pdf/080617_1_bs.

ߪ㕖⃻ታ⊛ߥᚻᴺߢߪߥ޿ߣ⠨߃ࠄࠇࠆ‫ޕ‬

pdf[2] K. Oguchi, K. Tojo, T. Okodo, Y. Tsuchida, T.

㧟㧚߹ߣ߼

Yamaguchi, and T. Murooka, “Next generation home

networking and relevant technologies”, Proc. of SPIE, ᰴ਎ઍࡎ࡯ࡓࡀ࠶࠻ࡢ࡯ࠢߦ߅޿ߡਥⷐࠦࡦ࠹ࡦ࠷ߣVol.5626, pp.163-168, Feb., 2005

ߥࠆࠬ࠻࡝࡯ࡒࡦࠣࠕࡊ࡝ࠤ࡯࡚ࠪࡦ߇ㅍ಴ߔࠆ㧘ࡒ࡝⑽න૏ߩࡃ࡯ࠬ࠻࠻࡜ࡅ࠶ࠢߩࠝ࡯ࡃ࡜࠶ࡊߦࠃࠆࠦࡦ

[3] S. Terada, Y. Kakishima, D. Hanawa, and K. Oguchi,“Physical Configuration of the Next Generation Home࠹ࡦ࠷ߩຠ⾰ഠൻࠍ⏕⹺ߒߚ‫⚿ߩߎޕ‬ᨐࠃࠅ㧘ᰴ਎ઍࡎNetwork”, IEICE Trans. Communications, Vol. E91-B,࡯ࡓࡀ࠶࠻ࡢ࡯ࠢߦ߅޿ߡߪ࠻࡜ࡅ࠶ࠢ․ᕈࠍ⠨ᘦߒߚ

No.7, pp.2169-2177, July 2008

Ꮺၞ೙ᓮᴺ߇ਇนᰳߢ޽ࠆߎߣ߇᣿ࠄ߆ߣߥߞߚ‫ޕ‬ ࡒ࡝⑽න૏ߩࡃ࡯ࠬ࠻․ᕈࠍ᦭ߔࠆ࠻࡜ࡅ࠶ࠢߩࡄࠤ
࠶࠻ࡠࠬࠍ㒐ߋᣇᴺߣߒߡ RSVP ߩ᦭ലᕈࠍࠪࡒࡘ࡟࡯࡚ࠪࡦߦࠃࠅ⹏ଔߒߚ‫ߡߒߣ⺰⚿ޕ‬㧘ࠕࡊ࡝ࠤ࡯࡚ࠪࡦ

[4] DVTS Consortium, accessed Sept. 16/2008
http://www.dvts.jp/en/index.html[5] K. Tojo, et al., “Measurement of burst trafficcharacteristics of next generation home network”, OECC

ߩ࠻࡜ࡅ࠶ࠢ․ᕈߦᔕߓߚࡄ࡜ࡔ࡯࠲ࠍ↪޿ࠆߎߣߢ

2005, Paper 6A4-6, pp. 166-167, Seoul, Korea, July 5-8,RSVP ߪ᦭ലߣߥߞߚ‫ޕ‬2005

 ࡃ࡯ࠬ࠻․ᕈࠍ᦭ߔࠆ࠻࡜ࡅ࠶ࠢߩਛ⛮ࡁ࡯࠼ߦ߅ߌ
ࠆࠝ࡯ࡃ࡜࠶ࡊࠍ࿁ㆱߔࠆᚻᲑߣߒߡ㧘HGW ߦ࠻࡜ࡅ[6] R. Braden, et al., Resource ReSerVation Protocol(RSVP), Sept. 1997, RFC 2205, accessed Sept. 16/2008⴫㧞 ᬌ⸽ታ㛎⚿ᨐ 㧞ಽ㑆᷹ቯ 
Proposed method(CPU clocks are synchronized)

Sent Received Packet
Packet Packet Loss Rate

Traffic
431028From n1

Traffic
434712
From n24310280 [%]4347120 [%]AverageThroughput

28.3[Mbps]

43471236462516.1 [%]

43287036774415.0 [%]

Average
23.6[Mbps]

23.8[Mbps]

http://www.ietf.org/rfc/rfc2205.txt[7] The Network Simulator ns-2, accessed Sept. 16/2008
http://www.isi.edu/nsnam/ns/[8] Shohei Terada, Yu Kakishima, Shingo Yamakawa, Dai
Hanawa, and Kimio Oguchi, “Dynamic traffic control( TQO P=/ DRU?
( TQO P=/ DRU?

method for QoS improvement in the Next generation



6JTQWIJRWV=/ DRU?



6JTQWIJRWV=/ DRU?

Sent Received Packet
Packet Packet Loss Rate

28.4
[Mbps]( TQO P=/ DRU?
( TQO P=/ DRU?

Normal operation(Best effort)





Convergence Home Network”, NOC2008, Gigabit/sHome Networks and Radio over Fibre, pp.182-187,

Krems, Austria, July 1-3, 2008

' NCRUGF6 KO G=U?



' NCRUGF6 KO G=U?

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