Techniques for Eliminating Packet Loss in Congested TCP/IP ...

106 downloads 95 Views 882KB Size Report
Techniques for Eliminating Packet Loss in Congested TCP/IP. Networks. Wu- chang Feng†. Dilip D. Kandluri. Debanjan Sahai. Kang G. Shin†. †Department of  ...
     "!  #%$&'(!*)+, .-#/0!213*-$54768$ 9(!;:-02U@ -3CYCe1E,.'VBSf 8  g3h Jji70B/k# ;HBFC(10'V#F:-02b@ -3CYC(13,.'VBM10@ /-4' 'T# ;HB6"c24#B/ 2HB#8Jvi,H#V%>*I%>w %+2H=x#;HBy@ -02H=0B8'[#V%>-02b@ -02-02.' 'V#V%YCYCB d,`B/V%>B2.@ B6;=0;GC>-4' 'T/D1E# B8'J€-4' 'T/D13#B8'13/ BB8'V,.B8@%(1XCYC>|‚;=0;‚:2H=M#[%+*B8'-EQs;HB81X726#;HB5"$2-4' 'ˆ/D13# Bˆ%('N# ;HB{Q$1X%YC+\H/BM-3Q„#;HBy2HB#VaF-0/ Ax#-x,H/ -370%(:*SB2#%('‹:9%Y—r@ \#F# -&,.13/D13*SB#B/V%>wBZ‘’H“‚Œ9\HB\HB8'j# ,.B/[Q‡-0/*˜aFB CtC\H2.:|„:-02N2H-0#V%Y‰ @13#V%>-02{*I\.'V#FP.B=E%+79B2613#1I/D13# B&a;70B8' :2H=N-02{# /D1X—N@FC>-410:%>2-0/D:24#D1~%+2N;=0;ˆCY%+2HA{\H#V%YCY%+w81E#V%>-02J KL;B10:H13,H#V%>70BFŒ0\HB\HB–R*_1E2.13=0B*SB2-02G@ -024#/ -3C‹1XC>=0-0/V%># ;H*6JI"c2ƒ'V# B819:=0-9/V%># ;H*¡a;2U/ B8'V,`-02.'VB&# -„@ -02H=9B8'V#V%>-02 132.:¢CY%>2HB813/VC>|L%>2.@ / B810'VB8'r%>#N-0# ;HB/ aF%('VB0J¡£O2|0WaO;HB2¤# ;HBaF%>2.:2GaF%>2.:2HB813/%+*,.10@ # -02M1N@ -02H2HB8@ #V%>-02Ÿ ''VB2.:9%>2H=6/ 13# B0JTKb;HB2M1C(13/ =9B„22HB813/T%>2.@ / B810'VBS\.'[B8:P4|{lmo.Wn%(''V;H-3a2# -6'V\HP.'[#D13270Br' %+*I\-02G/ B8'V\#D'T# -6:2.1XCYC>|0WFœ0B8@ #V%>-02 • @ -02.@C>\.:-02-3Qj,.-4''c%>P79%(:2H=ƒ2HB#VaF-0/ ACY%>2HAH'JLlmo@ -02H=0B8'V#V%>-02‚@ -924# /-3C%('Sas%+2.:2.:wBCt%>*I%>#D'q# ;HBS2# # B8:5:H13# 1HW# ;HBF'VB2.:2.@ / B819'VB8'%>#D'p# /D1E2.'V*I%(' 'c%>-025/D1E# BjP4|&%>2.@ / B*B24#V%>2H=&# ;HBz' %+wBk-3Q-02

DRAFT g

aF%>2.:-4' 'n%('j:#D'j@ -02H=9B8'V#V%>-02 aF%>2.:-4' 'JUŠF;HBSlmpoˆ@ -92H=0B8'V#V%>-02x@ -02=0-0/V%># ;H*µ%('5Q$1X%>/VC>|M'V# /D1~%+=9;4#VQR-0/ a13/ :J KL;HB2‚1@ -02H2HB8@ #V%>-02‚'V#D1E/ #D'5\H,Wu%>#S13# # B*S,H# '#-6/D13*,ƒ\H,G%>#D'S'[B2.:9%+2H=?/D13# BNŒ0\|xP2.@ / B810'c%>2H=I%>#D'k@ -02H=0B8'V#[%+-92SaF%>2.:#D''[B2.:9%+2H=U/D13#B0W4B79B/ |S/ -0\H2.:,6#V%>*SB0Jj"c26-0/ :-4' 'VB8'k:|2.@/ B810' %+2H=N'VB2.:9%>2H=I/D13# B0W3lmpo6'VB2.:# ;H* f 8gEh J}"$2v# ;wB5a;wB&B d†@ BB8:H'k# ;2.@ / B810'VB8:M1E#)1*I\.@ ;'cC>-~aFB/&/D13# BT-3Q‹-02HBS'VB=0*B24#&,.B/5/ -9\H2.:,#V%>*SB0J KL;HB2# ;HB_'VB2.:9%>2H=6/ 13# B8'O-3Qz# ;HBS10@ #[%+79Bq@ -92H2HB8@ #V%>-02.'5B d.@ BB8:# ;HBS2HB#VaF-0/ AŸª'@1E,.10@%># |0WŒ0\HB\HB8'&PH\|M,.19@ A0B# '513/ BS:| / B8:-4' '@1E2H2H-0#P`B %>22N'V\.@;_15*_1E2H2HB/8W0lmpo6/ B CY%>B8'k-02_15/B# /D132.'V*q%e''c%>-02S#V%>*SB-0\H#k*SB8@;.132-02.'-3Q5C>-4'V#U,.10@A0B#D'JvKL;HB2b1?# ;HB/ B# /D132.'[*I%(' 'c%>-02‚#[%+*B/S%('U# /V%>=0=9B/ B8:WFlmo{/ B8:2.:-4'[#z'VB=0*B24#8JŠ-5,H/B70B24#F@ -0224\.1XC./B# /D132.'V*q%e''c%>-02.' %>2_#[%+*B8'j-3Q'VB70B/BZ@ -02H=0B8'V#[%+-92r132.:q2HB# aF-0/A-0\H#D1E=0B8'W3lmpo6B*S,-3|'k132SB dH,.-02HB2=0-0/[%+#;H*6J "$2,.13/#V%(@ \-02x#[%+*B-0\H#I%>24#B/ 7~1XC$Jx£O,.-02x/ B8@ B %>,H#U-3Q)132x10@A42H-3aFC>B8:-02N@ -024#/ -3C 1XC>=0-0/[%+#;H*Ž-370B/‹@ \H/ / B2|‚aFB %>=0;B2H=0# ;?a;#T\.'VB8'&# -6:2-02N2H-0#V%Y‰ @13#V%>-02ˆ%>26# ;HB&QR-0/ *¡-3Q‹132’4mpÛM*_13/ AWH@ \H#D'k%>#D'&@ -02H=0B8'V#[%+-92NaF%>2.:# ;HB/ :*SBSB C(13,.'[B8: 'c%>2.@ B5# ;HBOC(10'V#F,.10@A0B#Fas19'‹:B2H=0# ;{B d†@ BB8:H'&1I*_1Xd*I\H*˜# ;H/ B8'V;H-ECe:¬ ÖNÝ70BIŒ0\HB\HB–R*_1E2.13=0B*SB2-02S2H-9#V%Y‰ @13#V%>-02N:,B dB8:q-~79B/# ;HBjCY%>2HAJj"$2I-0/D:|I:-02#-ZaF-0/ AO%>2I;HB81879%YC>|4–$@ -02H=9B8'V# B8:T2HB#Vaz-9/ A'W~@ -02H=9B8'V#V%>-02 2H-0#V%Y‰ @13#[%+-92_*I\.'V#jP`BZ=3%>70B2U# -5B2H-0\H=9;_'V-0\H/D@ B8'k'V-#;.13#j# ;HB&-3™B/ B8:!C+-|U# -1X70-3%(: ,.10@A0B#FC>-4' 'O:-02N2H-9#V%Y‰.– @13#V%>-02UQR/ -0*äP.B %>2H=U=3%>70B2N# -I# -26-0/ :B2HB8@ AUCY%>2HA P.B8@ -9*SB8'k\H2.:| 'V;.13/B8:M13*S-02H=-02.'JN´)''V\H*I%>2H=lnmpo6as%+2.:2H=.Wa;HB2 8î0î @ -92H2HB8@ #V%>-02.'S'V;.13/BS# ;HB CY%>2HA WH'VB2.:9%>2H=_@ -02H=9B8'V#V%>-02S2H-0#[%t‰ @1E#V%>-02S# -T-02HBZ@ -02H2HB8@ #V%>-02U/ B8:2H=_@ -92H=0B8'V#V%>-02U2H-0#V%Y‰ @13#V%>-02N#-„-92HBZ-3Q# ;HB* / B8:79%+2H=S@ -02H=9B8'V#V%>-02S2H-0#[%t‰ @1E#V%>-02_#-5-02HBZ@ -02H2HB8@ #V%>-02U/ B8:-022H-0#V%Y‰ @13#V%>-02.'5:=0-0/V%># ;H*ä# -P`B*S-0/ B&13=0=0/ B8''c%>70B0W3# ;HB5‘’H“‚Œ0\HB\HB5:*S,B:-02I2H-0#V%Y‰ @13#V%>-02.'Ë%>2.@ / B810'VB8'J "$2U# ;2H=S# ;HB5‘’H“‚1XC>=0-0/[%+#;H*Ž# -TP.B&C>B8' 'F13=0=0/B8' 'c%>70B0W0\H2.:w813#[%+-92¬@1E2_-H@@ \H/ 10'I#-4-M*U1324|x'V-0\H/ @ B8'SP.10@AG-3™¤# ;HB %>/r'VB2.:9%>2H=x/D1E# B8'T%>2L/ B8'V,.-92.'VB6# -?# ;HBN-0P.'VB/ 79B8:‚@ -02H=0B8'[#V%>-02JbŠs;-02{B d†1E*I%>2HB8'&# ;HB&%>*S,.10@ #&# ;.13## / 1X—r@OC>-410:ˆ;.10'-92610@ #V%>70B„Œ9\HB\HBI*_132.13=9B*SB24#F# B8@;H2|N:-026*B8@ ;.132*I\70B2HB8' 'k-3Q# ;HB&B813/VC>|_:=0-0/[%+#;H* 132.:# ;HB5# -0#D1~C 2-02.'F*I\#V%>,B2HB8@ AUCY%>2HA JF®p%>=0\H/ B  'V;H-3aZ' # ;HBI2HB#VaF-0/ AN# -0,`-3C>-0=0|N\.'VB8:y%+2?# ;HBIB d,`B/V%>*SB24# 'J„k10@;y@ -02H2HB8@ #V%>-02?-0/V%>=3%>2.13# B8'T13#Z-92HB„-EQ‹# ;HBTC+B QR# *S-2.13#B8'‹13#FØ Ô†W0*_13A9%>2H=I# ;HBFCY%>2HA_P`B# aFBB2NØ­132.:UØ • # ;HB&P.-0##VC>B2HB8@ AJ KMB‰./D'V#TB d†13*q%+2HBN#;HB_,`B/VQ‡-9/ *_132.@ BU-3Q5‘’H“ƒ\.'c%>2H=x’4mpÛJ"!k|M\.'c%>2H=G‘ ’H“‚132.:?B2.:# ;G’4mpÛW1~CtC‹,.19@ A0B#OC>-4' 'VB8')Q‡/-0* #;HB_‘’H“‚Œ9\HB\HB_@132P.B_1E# # /V%>PH\H# B8:{# -NPH\# ;H*Ä%('*_10:70B P=0\H/ B g  1-022H-0#[%t‰ @1E#V%>-02MP.10@A6# -U# ;HBS'VB2.:9%>2H=y'[-0\H/D@ B8'513# 1/D1E# BNa;-410:G# -MP`By'c%>=02B2HB8@ A¬Ct%>2HAxP.132.:2HA6;.10'F2H-U,.10@A0B#D'F#-q'[B2.:J®p%+=9\H/ B g cP”u'[;H-~a&'F# ;HB„Œ9\HB\HB,-0#&a;HB2{# ;HB2-02.'s%('F%>2.@ / B819'VB8:N# -S g J"c2y@ -02/ B8:W '[B2.:9%+2H= @ -02H=0B8'[#V%>-02_2H-9#V%Y‰ @13#V%>-02613#F15/D13#BZa;-02J ®p%>=0\H/B6M'V;H-3aZ'I# ;HB' 13*SB6'[B#S-3Q5B d,`B/V%>*SB24# 'S\.'c%>2H=x@ -02.'VB/ 7313#V%>70B{B813/VC>|‚:-02J^"$2L@ -024#/D10'V# # -ƒ®p%>=0\H/B g  1”DWz®p%>=0\H/By|:-02ƒ:-02M# -U# ;HBS'VB2.:9%>2H=M'V-0\H/D@ B8'JŠF;B2HB8@ AMŒ9\HB\HB_2HB70B/I:2.'5B79B2M# ;H-0\H=0;{%>#5%('T:=0=0B/„'[\HP.'VB8Œ0\HB22‚'VB2.:9%>2H=ylmpoy'V-9\H/D@ B8'JNŠF;-410:H'S132.:G#;HBUC+--4' '!/D13# B8' a;HB2‚1:B2HB8@ A?CY%+2HAJx´5'T# ;HB6:B2HB8@ANCY%>2HA{%+2.@ /B810'VBI,H/ -0,`-0/ #V%>-02.1XCYC>|# -S# ;HBI2-02.'!\.'c%>2H=N# ;HB5CY%>2HA JTŠF;HB/ B 13/ BI#VaF-N*_1X%>2M/ B819'V-02.'&a;B/8Wp%('5#;.13#5aF%># ;x1Ce1E/ =0B 2-02.'Ws%+#U#D13A9B8'_1{C(13/=0B/r1E*S-0\H2=02.1XCF# ;HBSB2.:?;H-4'V#D'!# -6P.19@ AM-E™]# ;HB %>/S'VB2.:9%>2H=M/D1E# B8'JNŠF;HBS-0#;HB// B810'[-02%('I:-4''5/D13#B8'5\.'c%>2H=x‘’H “ 0’4mpÛx-~79B/„1N/ 132H=0BU-3QZÖNÝ4Þß7~1XC>\HB8'JŠF;HBN@ -0/ / B8'V,`-02.:9%>2H=P.-0# #[C+B2HB8@A CY%>2HA¤\H#V%YCY%+w81E#V%>-02¤QR-0/UB810@;bB dH,.B/[%+*B24#ˆ%e'{'V;H-3a2^%>2Ü®p%>=0\H/BM©H$P”DJ}ŠF;HB¬‰.=0\H/ B8'N'V;H-3aÅ# ;.13#UQR-0/r'[*_1XCYC 2-4' 'F/D1E# B8'k/ B*_1X%>2UC>-3a›10@ / -4''z1~CtC7~1XC>\HB8'O-3QËÖNÝB2HB8@ A¢Ct%>2HA^\H#V%YCt%>w813#[%+-92.'N/ B*_1~%+2^;=0;¤10@ / -4' '1XCYC!ÖNÝ\HB8'Ua;wBf& g ©

4.0

r ît"u'w

Time (s)

6.0

8.0

q

10.0

ÖNÝ|L:-021XC>=0-0/V%># ;H* Q$1X%YCe'W.,.10@A0B#FC>-4''-H@@ \H/D'Q J !k|6'VB# #[%+2H=NÖNÝwB0W# ;HB ‘’H“]1XC>=0-9/V%># ;H*Ž@132S1X70-3%(:T,.10@ A9B#C>-4' '[B8'a;HB2IB813/VC>|S:-02TQ¦1~%tC('uP4|I:22H=# ;HB' 1E*SBFB d,`B/V%>*SB24#10'p%>2_®p%>=0\H/BZ# ;M1qCe1E/ =0B/&P.-0# #[C+B2HB8@AMŒ0\HB\HBS'c%>wB_1E2.:61q‰HdB8:MÖNÝ# ;y1Q$1X%>/VC>|y' %+=92-02.1~C‹PH\*I%>2.13# B8:JFŠF;HB,-0#F1XC('V-'V;H-3aZ'# ;.1E#j# ;HBZ@ -0*IP2HB8:SB ™B8@ #k-3Q \.'c%>2H=’4mÛx132.:T,.10@A0B# :-:H's-3Q#V%>*SB&a;HB/ B&lmoU%('13PB&# -T%>*S,.10@ #F# ;HB 'VB2.:9%>2H=S/D1E# B8'k-3Q# ;HB)'[-0\H/D@ B8'J‹Šs;26@ -0226®p%>=0\H/ B52H=N%('S:B2H=0# ;.'F-EQpÔ ît"u WB2H=0# ;N@132U*S-0/ B&# ;.132U:B2H=0# ;G@ -024#[%+2|M@ / -4' 'VB8'&P.19@ AM132.:ˆQR-0/ # ;-370B/5ÖN×$Ø`Ù(Ú|y:2.1XCF%>*S,.10@ #I-02x# ;HBU,.10@A0B#TC>-4' 'T/D13# B8'T-0P.'[B/ 70B8:JM®H-9/q'[*_1XCYC 7~1~C+\HB8'&-EQzÖNÝ4Þß4WHB813/VC>|y:-02N%('O%>2HB ™B8@ #V%>70BS132.:N# ;HBTC>-4' 'O/D13#B8'132.:N,`B/VQR-0/ *_132.@ BI13,H,H/ -419@ ;{# ;.13#-3Q 16:2.@ / B819'VB8:WC>-4' '!/D13# B8'T'cCY%+=9;4#VC>|ƒ:2.@ B_# ;HBˆ‘ ’H“xŒ0\HB\HBU%('T13PB # -'VB2.:x@ -02H=0B8'V#[%+-92x2H-0#V%Y‰ @13#V%>-02GP.10@AM# -# ;HBN'V-0\H/D@ B8'!%>2x#V%>*SBU# -,H/ B70B22|0W.10'‹ÖNÝ2_,.10@A0B#uC+-26P`-0# ;U‰.=0\H/B8'WH# ;HB5731XC>\HB-3Q‹ÖNÝ4Þ ß a;2*I%>wB8'&# ;HB&C>-4' 'O/D13# B8' 3 %('Z:9%Y™B/ B2\HBI-3QËÖNÝ2.@ / B810'VB8'J Š ;HB/ B810'[-02Na;70B„Œ9\HB\HB*U132.13=0B*SB22H=,.19@ A0B#‹:-022H-0#V%Y‰ @13#V%>-02IQR\H2.:H13*SB2|TCY%+*q%+# '‹,.19@ A0B#C>-4''j/D13#B8'J´5' *S-0/B„@ -02H2HB8@ #V%>-02.'OP.B8@ -9*SBS10@ #V%>70B0W`# ;HB/D1E# B5-3Qz@ -02H=0B8'[#V%>-0262H-0#[%t‰ @1E#V%>-02W 1E2.:6#;4\.'W†# ;HB5C>-4' 'O/D13#B8'*I\.'V# %>2.@ / B810'VB0J?œ0# B810:-02x1X70-3%(:H132.@ BN1XC>=0-0/V%># ;H* fYô4W  ­HW  ô4W  ÔHW g0î3h =3%>70B8' 'V-0*B&%+2.' %+=9;4#510'F# -Ia;-02.'

®p%+=9\H/ B„ò à "c*S,.10@ #&-3QËB81E/VC>|r:70B2HB8' 's-02‘’H“ @ -02.'V# 1324#k,H/ -0P.13P#V|p»W*SB0Wz1E2.:

Á

%('_1@ -02.'[#D1322H=3C>B5P.-0##VC>B2HB8@ AICY%>2HAU-3QhÃ

ï ðñ QR-0/F1&‰HdHB8: Ä 2-02.'OõƒJ"c2_# ;# \.13#[%+-92WH# ;HB&P.132.:79%e:# \H#[%+2H= # ;-02y1E2.:N'V-3C>70%>2H=Q‡-9//»W2 ø õ ï¾½/½§È Á »§”ÇÆ  g ”

Ã

¿oÀQÀ

É

´5'I# ;HBNB8Œ9\.13#V%>-02‚'[;H-~a&'Wja;HB2‚1XCYCZ-EQ)# ;HB6@ -92H2HB8@ #V%>-02.'_1E/ BN\.'c%>2H=M# ;HBNlmpoy@ -02H=0B8'[#V%>-02‚1X70-3%(:H132.@ B 1XC>=0-0/[%+#;H*6W‹#;HBN\H,H,.B/UP.-0\H2.:¢-02x# ;HBN,.10@A0B#TC>-4' 'I/D1E# B6Œ0\.19:|G%>2.@ / B810'VB8'aF%># ;x# ;HBN2-02.'!,H/ B8'VB270B2M,.1X%>/T-3QzB2.:,`-3%>24# 'J "$2-02HBI2HB#VaF-0/ AW.aFBI;.1X70B©U%(:2H=ƒ19@ / -4' 'T# ;HBN2HB#VaF-0/ AŽ J ¥%>70B2GQ$1X%>/_'V;.13/[%+2H=G13*S-02H=4'[#„#;HBr@ -02H2HB8@ #[%+-92.'WF# ;HB6@ -02H=0B8'[#V%>-02xaF%>2.:-02xaF%YCYCZ;.1X70Br@ -92H=0B8'V#V%>-02xaF%>2.:2.:9%+79%(:-02^%>2‚#;70BI@ -02H=0B8'V#V%>-02{2H-0#V%Y‰ @13#V%>-02ˆ%>26# ;HB&QR-0/ *¡-3Q‹1TC>-4'V#,.19@ A0B#XWHP.10@A_-3™{%>#D'as%+2.:-~asC+|{PH\-02aF%>2.:*SB0J ¥%>70B2^# ;2^# ;*SB8'&-9/ î J ­S,.10@A0B#DÊ ' œ8/ -0\H2.:*SB0JIœ3%>*I%YC(13/VC>|0W \.'c%>2H=U# ;HB' 13*SB&%(:wB8:{*S-H:#Z@132NP`B„'V;H-3a2U# ;.13#aO;HB26ÔS@ -02H2HB8@ #V%>-02.'&13/ B5,H/ B8'[B24#8W9C>-4' '[B8'-H@@ \H/ 13#Z1T/D1E# B5-3Q g J î ,.10@A0B#D[ ' œ8/-0\H2.:,N#V%>*SB0W.1Œ0\.10:2.@ / B810'[B0J

!kB8@13\.'[BS# ;HB_:7313#V%>-02G-3QskŒ0\.13#[%+-92 g %('5P.19'VB8:-02%(:wB8:‚'@ B2.13/V%>-4'Wp# ;HB_10@ # \.1~CjC+-=0\H/ B

0.0 0.0

60.0

40.0

20.0 Actual Length Average Length

10.0

Actual Length Average Length

80.0 Queue Length (KB)

Í

80.0 Queue Length (KB)

Queue Length (KB)

80.0

ÎÎ

100.0

2.0

4.0

Ì

6.0

Time (s)

$P”‹ÖNÝB2H=0# ;{,B2.@ BU/ B# /D132.'[*I%(' 'c%>-02#V%>*SB-0\H#D'&@13\.'c%>2H={# ;HB*

#-r'VB2.:yC+B8''&,.10@ A9B#D'#;.132# ;HBB8Œ9\.13#V%>-02,H/ B8:9%(@ #D'J

œ0#V%YCYC$W‹'c%>2.@ B_,.19@ A0B#!C>-4' '5/ 13# B8'O%>2.@ / B810'VBU/D13,|x10'&2HB#Vaz-9/ A'&P`B8@ -0*SBU*S-0/ BS@ -02H=9B8'V# B8:Wp%>#5%('T2HB8@ B8' ' 13/ | # -M:-4' '!Q‡/-0*Ï@ -02H=0B8'V#V%>-02G2H-0#V%Y‰ @13#[%+-92x# ;H/ -0\H=0;G# ;HBU\.'VBN-3Q5’4mpÛM%>2x-0/D:2¬@ -92H=0B8'V#V%>-021879-3%(:H132.@ B0W %>2.@ / B810'c%>2H=# ;HBSP.1E2.:*SB8'!# ;H/ -0\H=9;M# ;HB \.'VBU-3Q)10:H:9%>#V%>-02.1~CZPH\-3a¡# ;HB_/ 13# BU-3Q)@ -02H=0B8'[#V%>-02ƒ2H-9#V%Y‰ @13#V%>-02‚@ -02.'c%(:|{%>2.@ / B810'VBI,.10@A0B#OC>-4' 'O/D13# B8'! 10'F-9P.'VB/ 70B8:ˆ%>2M®p%+=9\H/ B„ò2HBI# ;2_# ;HB5 g @ -02H2HB8@ #V%>-02?B d,`B/V%>*SB24#XJ5KL;HB2¬ÖNÝ2HB ™nB8@ #[%+79B_132.: # ;HBŒ9\HB\HB0Ÿª'P.B;.1X79%+-9/‹13,H,H/ -410@;HB8'p# ;.13#-3Q 15:# ;PH\-02J ®p%>=0\H/ B 8î $P” '[;H-~a&'# ;HBzŒ9\HB\HBkC>B2H=0# ;I,-0#QR-0/#;HBzÖNÝ-4'VBU# -6# ;HBN'c%>wBU-3Q# ;HBrŒ9\HB\HBN10'5,`-4' 'c%>PB0JM®p%>2.1XCYC+|0Wk10' ÖNÝ|MC(13/=0B/S10''V;H-3a2¬%+2x®p%>=0\H/ B 8î  @X” Wj‘’H“ƒP`B8@ -0*SB8'T*S-0/ BU13=0=0/ B8''c%>70BI%>2G%>#D' B813/VC>|M:-02x@13\.'c%>2H=# ;HB_1X70B/ 13=0B„Œ9\HB\HBC+B2H=9# ;]1E2.:# ;HBS/ -9\H2.:,ƒ#[%+*B8'5-3QB810@;ƒ@ -02H2HB8@ #V%>-02G# -

:2.@ / B810'VB&aF%># ;N:*SB2-4''/D1E# B8'kB8'V,.B8@%(1XCYC>|Ma;HB2{# /D1X—r@ C>-410:{š.\.@ #\.13# B8'&aF%(:|0JS"c2.'V# B810:Wn%+2=0B24#SŒ9\HB\HBS*_132.1E=0B*SB2B2HB8@ A^CY%>2HA›P`B Q‡-9/ Bƒ@ -02H=0B8'[#V%>-02¤2H-0#V%Y‰ @13#[%+-92›@132¤P`B :70B/ B8:WjPH\-4' 'O%('&%>2HB79%>#D13PB0JNŠF;-02G:2ƒlmpoy@ -02H=9B8'V#V%>-02ƒ@ -022G# ;HBS,H/ B8'[B2.@ BN-3QZ10@ #V%>70B Œ9\HB\HB„*U132.13=0B*SB270B2# ;# ;6,`-4' 'c%>PB_*-:9%Y‰ @13#V%>-02.'

DRAFT 0

  ”u@C>-4'[B8@ a2.:` ” Öm× U ØAÙ& Ø Ú­&i&  ” Oñ Û`ð ñ ØÝÜS“8& ñOÛ`ð ñ ØݒÜS“Ý£ g w ØAÞ Û  Ø ßU“Nà­&¤%>2*SB/ %+2=0\H/ B

w

90ànèféê lnmpo61XC>=0-0/[%+#;H*

# -Slmpo.Ÿª'kaF%>2.:2H=_*B8@ ;.132/# /D1E2.'V*I%(' 'c%>-02{/D13# B8'u%>26# ;2H=6# ;HBI7~1~C+\HB0JUŠF;2H=3C>B10@A*S,Br1~C+=9-0/V%># ;H*ÅQR-0/:2H=y'V-`J5"$2M#;2.'V# B819: -3QF/ B8'VB# #V%>2H=Ulmo.Ÿ '&P.10@ A2#&%('5;.1XC>70B8:JT"$2# ;HBI/ B8'V#5-EQ‹# ;HBI,.13,.B/8Wp# ;2*„\H*ä# /D132.'[*I%(' 'c%>-02I/D13# Bk%('j1XC('V-:9%>/ B8@ #VC>|S:2*I\H*¥aF%>2.:B/S'VB=0*SB22H=M1N'V*_1XCYC>B/„'[B=0*SB2=0\H/ B

2.0

8.0

q

10.0

$P”Q¸\HB\HBT,# ;?‘ ’H“`–V’4mÛ

%+2*I\H*Ð'VB2.:9%>2H=_/D1E# B8'132.:U# ;HB5,`B/VQR-0/ *_132.@ BT-3Qjlnmpo

*_13A9B8'kCY%+2HB81E/%>2.@ / B810'[B5C>B8' '&13=0=0/ B8''c%>70B132.:U# ;-4' 'VB8'J Šp-I\H2.:wB0W 1E2.:U# ;HB5*I%>2*„\H*

aF%>2.:2N@ -02H=0B8'V#B8:S2HB#VaF-0/ AH'W3aFBB d.13*I%>2HB)1!24\H*IP`B/z' @ B2.13/[%+-2M®p%>=0\H/ B Xg JF"$2# ;2x132x13# # B*S,H#T# -6*-0/ BIQ$1X%>/VC>|]@ -9*S,.13/ B_:|ƒ:-02]@ -92.'VB/ 7~1E#V%>70B_P2H=MÖNÝ2.:B/‹'VB=0*SB2-4' 'I/ 13# B8'T-370B/S# ;HBN\.'VBN-EQ)# ;HBUC(13/=0B/ 8î0î0î PwB0Jx"$2‚19:H:9%+#[%+-92WF# ;HBU‰.=0\H/ B1XC('V-ƒ'V;H-3aZ' # ;.13#5#;HB èéê lmpo6*S-H:9%Y‰ @13#V%>-02.'!;.1879Bq1U79B/ |6*S-H:2.1XCYC>|0WazBI-0P.'[B/ 70B # ;.13#&:2# ;HB„1E*S-0\H22HBZ# ;HB&Œ0\HB\HBOC>B2H=0# ;U,*SB22.:2H=„lmpo6aF%># ;ˆ‘ ’H“`–V’4mہŒ0\HB\HB8' ø JjŠF;HB5ÖNÝ*SB0J{&\H/V%>2H=y#[%+*B8'5-3QZ@ -02H=0B8'[#V%>-02ƒaO;HB2]1rCe1E/ =0BS2-02.'I13/ BU@ -0*S,.B#[%+2H= QR-0/IP.132.:2.:2.:2HB813/ %>*S,.10@ #T-02M# ;HB_@ -92H2HB8@ #V%>-02Ÿª'T# /D132.'[*I%(' 'c%>-02M/D1E# B0J_®†-0/5B d†1E*S,B0WaO;HB2]1N@ -02H2HB8@ #[%+-92ƒ;.10'T16@ -02H=9B8'V#V%>-02 aF%>2.:#_:#D'Ias%+2.:# ;y'V*U1XCYCËaF%>2.:,2.@ / B819'c%>2H=_132.:U:-:H'

÷?ø =O7nùA]N7U]N7n^G7?5Oú[IS=i@A^GL[IgLR\K5NLMCSFQ9:^äûüNýiLRþ[7UCg5OL[CSFQ9?^ÿ'ùA]O7?]N7UPnPS=NLRVPCS7?PS] ^GISPhPEDGF Dj^_9# ;H*

-3QZ;=0;x\H#[%tCY%>w813#V%>-02L132.:?,.10@ A9B#5C>-4' 'TQR-3CYC>-3azB8:?P-H:H'I-3QZ\H2.:w813#[%+-92J‚œ0\.@;x# /D1~—r@I,.13# #B/ 2.' 1XC('V-I:|_:*SB22.@ / B810'VBO%>2_#/D132.'V*I%(' ' %+-92S/D13# B8'ua;HB2S# ;HB&@ -02H=0B8'V#V%>-02UaF%>2.:B8:&CY%>2HB813/%>2.@ / B810'VBF1XC>=0-0/V%># ;H*6WXaFB‹1XC('V-B dH,.B/V%>*SB2# ;1FP.1E2.:=0-0/V%># ;H*{JMŠF;HB_*-0#V%>7~13#[%+-92x-3QZ# ;HBUP.132.:24# \#V%>70B0J ´5' 'V\H*SBU# ;.13#T# ;HB_P`-0# #VC>B2HB8@Aƒ/-0\H# B/;.19'B2H-9\H=0;ƒPH\#D'TP.-0# #[C+B2HB8@A P.132.:-02 2H-0#V%Y‰ @13#[%+-92‚# -M/B š.B8@ #I%>#D'VB CYQP.10@Aƒ# -?# ;HBNP.-0##VC>B2HB8@ AGCY%>2HA J¤Šs;HB2Wj%YQB810@;b'V-9\H/D@ BN-02|G%>2.@ / B810'VB8'q%>#D' # /D1E2.'V*I%(' 'c%>-02L/D13#BNP4 | ÕB70B/ |x/ -0\H2.:,b#[%+*B0WF# ;HB2HB# aF-0/A]@132^B2.'V\H/ BM1?*I%>2# ;H*_'  ô à 

@ -02H2HB8@ #V%>-02.'JŠF;B810'V#51I/ -0\H2.:*SB5QR-0/Z@ -92H=0B8'V#V%>-02{2H-0#V%Y‰ @13#V%>-02{# -S;.1X70B

132T%>*S,.10@ #j-02T# ;HBF-3™B/ B8:!C>-410:I'VBB2IP4|T# ;HB‹/-0\H# B/8g J !z1E2.:2H;HB/ B2|S:70B2G# -61XCYCs'[-0\H/D@ B8'5aO;HB2ƒ# ;HBP.-0# #[C+B2HB8@AM/ B8'[-0\H/D@ BSP`B8@ -0*SB8'I' 13# \H/ 13# B8:JSK^%># ;ƒŒ9\HB\HB %>2H=ƒ1XC>=0-0/[%+#;H*_' 'V\.@;_10'u‘’H“¢1E2.:SÒ#5*_1X|6P`BS,.-PBIQ‡-9/1Ce1E/ =0B/@C(10' '!-3Qj%>2.@ / B810'VBfœ~:/Z'V;.1E/V%>2H=.J

¥O%>70B2M# ;HB8'VB# aF-N*S-H:9%Y‰.B8:?%>2.@ / B810'VBN1XC>=0-0/V%># ;H*U'WaFBS/ B/ 132M# ;HBS,H/B70%>-0\.'TB dH,.B/V%>*SB22HAS\H#V%YCY%+w81E#V%>-02S-0P.'VB/70B8:Jj®H-0/# ;HB ‰HdHB8:6' @1XC>B8:ˆ%>2.@ / B810'VB8'W.# ;HBT=0/D13,H;.'O'V;H-3a¤# ;HB/B8'V\#D'F\.'c%>2H=61S' @1~Ct%>2H=UQ$10@ # -0/F-3Q ÷ JF®H-0/O# ;HBP.132.:=0-0/V%># ;H*6WaFBI'VB#Z#;HB„,`B/D@ B22®p%+=9\H/ B Xg aO;HB2N\.'c%>2H=_1 g ­ tvu ‘’H“]Œ9\HB\HB5aF%># ;61IÖNÝ4ކÙ(ÚT-3Q g0î t"u JF®p%>=0\H/ B  ô0 12.@ / B810'VB8'T=0/B813#VC>|6/ B8:2NC>-4''F/D13# B8'u%('&10'F;=0;y19' ñ “O‘“Oà3 Ý Ü-0/D:=0-0/V%># ;H*6WE%>2_,.13/#V%(@ \w813#V%>-02?-0P.'VB/ 70B8:{10@ / -4''1XCYC ' @;HB*SB8'JjKL;B# ;HBI' @1XC>B8:CY%>2HB813/&%>2.@ / B810'VBI1XC>=0-0/V%># ;H*˜,H/-~79%(:=0-0/V%># ;H*{W3-02# ;HBj-9# ;HB/;.1E2.:W3*_1X%>24# 1X%>2.';=0;TCY%>2HA\H#V%YCY%>w813#V%>-02.' 10@ / -2.@ / B810'VB8'T*_1EA0B8'513=0=0/B=413# BIlmpo_C>B8' ' 13=0=9/ B8' 'c%>70B0W# ;-4''&-0P.'VB/ 70B8:ˆ%>2M# ;HBI,H/ B79%>-0\.'5B dH,.B/[%+*B24#D'

'V;H-3a2U%>2y®p%>=0\H/B  ©.Jj®p%>=0\H/ B  Ô-022H-9#V%Y‰ @13#V%>-02S@1325P.B:w813#V%>-02 'c%>2.@ B5%>#O%>2HB70%>#D13P|@13\.'VB8'F# -=0=0B/B8:W4#;HBP.-0##VC>B2HB8@ ACY%+2HAN@132N'V\HP.'VB8Œ9\HB24#[C+|UP.B8@ -9*SBZ\H2.:wB8:J&ŠF;HB/ B 13/ B&1@ -0\H,B&-3Qas1X|H'# -&‰HdS# ;2.@ / B810'VB8'kB70B2U'V*_1XCYC>B/'V# ;.13#‹'[#D13#V%(@kB813/VC>|S:-02U;.10'j15@;.132.@ B# -'c%>=02.1~C # ;HBB2.:70BO%+2%>*S,H/ -379%+2H=I# ;HB&,.B/[Q‡-0/*_132.@ B&-3Q' @1XC>B8:I%>2.@ / B819'VB8'Jj"c26@ -024#/D10'V#j# -T# ;HBZ' @1~C+B8:CY%>2HB813/k%>2.@ / B810'VB0W ®p%>=0\H/ B  ÔB2H=0# ;N,-0#ka;HB2_B819@ ;_'[-0\H/D@ BF%('k\.'c%>2H=IP.132.:24#B2.:B2HB8@ A{CY%>2HAy\H#[%tCY%>w813#V%>-02.'T-370B/ 1U/D132H=9B„-EQzaF-0/ A9C>-410:H'O\.'c%>2H=6# ;HBIP.132.:2 # ;HB&2HB#Vaz-9/ A J"c2N# ;HB8'VB&B d,`B/V%>*SB24# 'WHaFBZ\.'[B5# ;HB)'13*SB&# -0,.-EC+-9=0|_10'u%>26®p%>=0\H/ B 8g 132.:7~13/|S# ;HB52-02.'5=9-3%>2H=610@ / -4' 'O# ;HB

 óª­ ï›ðñ CY%>2HAQ‡/-0* g ­U# -r î0î J5´5'&# ;HBT‰.=0\H/ BS'V;H-3aZ'W#;HB„,.19@ A0B#–¨C+-2U/ B*_13/ A313P|S;=0;N10@ / -4' 'k1XCYC B dH,.B/V%>*SB22.'V#F-0#;HB/s'@ ;HB*SB8'W4aFB&B d†1E*I%>2HB5# ;HB5,.10@A0B#jC>-4' 's/D13# B8' \.'c%>2H=M1N# / 1X—r@TC>-410:?-3Q 8î0î @ -02H2HB8@ #V%>-02.'J®p%>=0\H/ B g9î  1-022H-0#V%Y‰ @13#V%>-02QR/ -0*Å,.10@A0B#&C>-4' '&# ;H/-0\H=0;# ;HB \.'VB&-3Q‹’4mpہ%>*S,H/ -370B8'uC>-4' 'k/D13#B8'‹'c%>=02*SB2#D'Z'[B2.:9%+2H=N/ 13# B5*S-0/B„Œ9\-4''/D1E# B8''cC>-3aFC>|N/V%('VB„19'# ;HBTPH\H/D'V#V%>2HB8' '&'VBB2M13#

DRAFT  Ô

2.5

45.0 Normal TCP, Drop−tail Normal TCP, Normal RED Normal TCP, RED−ECN Normal TCP, Adaptive RED BW SubTCP, RED−ECN BW SubTCP, Adaptive RED

40.0

ñ

2.0 Percent Packet Loss

Percent Packet Loss

35.0

10%, 10ms 10%, 50ms 30%, 10ms 30%, 50ms 50%, 10ms 50%, 50ms

30.0

1.5



25.0 20.0 15.0 10.0

1.0

0.5

5.0 0.0 0.0

ð

80.0

ð

ð

160.0 240.0 Buffer size (in KB)



0.0

ð

0.0

320.0

 12.@ / B819'VB8:N/ -9\H2.:,N#V%>*SB;.19'kCY%+##VC>B %>*S,.10@ #&-02N,.B/[Q‡-0/*_132.@ B0WHaF%># ;UC>-4''/D1E# B8'k/ B*_1X%>22H=SC>-3a›10'sazB CYC$J

$

ÔL!!nÕ¸ Ó !Ó±&&%I5p!æ('

&²

ŠF;2HB813/&%>2.@ / B810'VB8'&P`-0# ;M@132{,H/ -370%(:2H=N,.10@A0B#OC+-2.@ / B810'c%>2H={2HB# aF-0/A_\H#V%YCY%>w813#V%>-02JIKMBI13/ BS@ \H/ / B2|6aF-0/A0%>2H=U-02B d# B2.:9%>2H=NP`-0# ;*SB8@;.1322.'V#B810:-3QZÖNÝ70BI‘’H“]1XC>=0-0/[%+#;H*˜# -S132 B2H;.132.@ B8:{Š-Hœ0–RB2.1EP22H=›a1X|H'N-3QS%>*S,H/-~79%>2H=¤B2.:-02}@ -02=0-0/V%># ;H*U'JÏKL;B P.132.:2H=I/D13# B8'WE%>#j%('k-3Q‡#B2_:#D'‹'VB2.:9%>2H=I/D13#B*S-0/ B&'cC>-~asC+| -0/2H-9#Z13#Z1XCYCaO;HB262HB813/V%>2H=U# ;HB„@ -92H=0B8'V#V%>-02N,`-3%>24#If g W g ­†W g0•3h %>26-0/D:=413#[%+2H=q%+2.@ -9/ ,.-0/ 13#V%>2H=r'[\.@ ;N# B8@;H2#V%>-02.1~C*SB8@;.132/ 2HB8' '&-3Q‹# ;HBIaF%>2.:2H=61XC>=0-0/[%+#;H*_'JTi2HBS-3Q‹# ;HBI10:-02M1X70-3%(:H132.@ BT%('&# ;.13# %>#T%+2H;HB/B24#VC>|G=3%>70B8'I132x10:|y®pC>-3|H:Q‡-0/F;HB C>,2W‹œ.J®pC>-~|H:W10„J1.010@ -0P.'[-02W ¥IJ ò %+2.'[;.1XCYC¦W!íZ/ J .j13/# /V%(:2J´Z2.1~C+|H'c%('F-3Q# ;HB&"$2.@ /B810'VBfœ~&B8@ / B819'VB5´C>=0-9/V%># ;H*_'uQ‡-9/í‹-02H=9B8'V#V%>-02U´Z70-E%e:H1E2.@ B %>2Mík-0*S,H\H# B/ á B#VaF-0/ AH'J+X¹?2H=SQR-0/i.j/ -379%e:9%>2H=6O%Y™B/ – B22H=rŠ&íH.x&|42.13*q%e@'s%>26132N"$2# ;

ò

ò

\#V%>,BSí‹-92H=0B8'V# B8:

1X|

 ò0ò2H=‚Š&íŠ.OŸª'T"$2#V%(1XC5K‚%>2.:2.j10@A0B# –Vœ0aF%>#D@;HB8:"¥513# Ba1X|'J~7DÈ.¼RÇX¾DÈ`Ç8¼¨» ºj¹0n ¾ ]~ʨE È A‚VezǶ¸Ç ½0¾V Ì ƒN½0S È :„c-FnZÇX¾DʨÇ8È`ÌDÇXW40 ­ ó  ­ • W-~|H:x132.:…0„J.010@ -0P.'[-02Jb…O132.:|x&B# B8@ #V%>-02€¥)13# Ba1X|H'5QR-0/Ník-02H=0B8'V#V%>-02^´Z79-3%(:H132.@ B0J LON†Pˆ‡W7^c+c-c‰d.¾ ½9ÈH¶½0Ì8¼Rʨ¹0ÈH¶&¹0H È \)ÇX¼Rºj¹0¾^]3Ê(ȂA0W  $©†” à 0ò-H@13#V%>-02U%>2{œ0;.13/ B8:ˆí‹-0*S,H\H# B/Oœ0|'[# B*_'J18~c`NeFǶÇD½9¾ ̒ƒOezÇ ZH¹0¾ ¼~dfe»>g6CEp3W`œ0B,H#8J  ò0Ô3©.J f  ­ h Š5J0IJ€13AH'V;H*_1E2Ü1E2.:b£TJ ò 10:-02

´&70-3%(:H132.@ B0JpƸ¼‹Zfy‡‡Ƹ¼‹ZŒDGÇ8·¨·tÌ ¹0¾VÇsDeÌ ¹0É~‡ Z[?W ‡.¼ ¹‡9d-N†IzºjʨÈS:0¹0º-D Z.¶WH´&\H=0\.'V#  ò9ò • J

f gHh 0IJ .j1~d†'V-92J‹j2.:-02?´Z70-E%e:H1E2.@ BI%>2 í‹-9*S,H\H# B/ á B#Vaz-9/ A'J L¡N9P¢d.¾V½0Ȇ¶¸½0ÌX¼RÊ(¹9ÈN¹0ÈN‹¹0ÉVZ[?w813/1E2.:íZJpœ0-02H=.JH1F%>=0;.B/VQR-0/ *U132.@ BŠ&íŠ.]%+2´ á œ á ‹Š!JON‹¹0ÉVZ[?=0-0/V%># ;H*6J£N‹¹0ÉVZ[?

Suggest Documents