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1 ITU-R S.897 (/) +, % # $% & ' ( )$*!" %* - S

2 ITU-R S.897 ii.. (IPR) (ITU-T/ITU-R/ISO/IEC).ITU-R ( ) ( ) () BO BR BS BT F M P RA RS S SA SF SM SNG TF V :.ITU-R ITU..(ITU)

3 ITU-R S.897 () ITU-R S ( ) ( ( ( ) ( ( ( ) ( ITU-R S.7 ( (TCP) (ITU-R S. ) ( ) (TCP).( ). ITU-R S. - ( (

4 ITU-R S WiFi WiMAX- 8.. WiMAX (QoS) (QoS) WiFi (BOD)... OPNET (VoIP) WiMAX VoIP (RTCP).. (AMR-WB)...

5 ITU-R S.897. WiMAX : (TCP)

6 (Algebraic code excitation linear prediction) ITU-R S.897 (Third generation) (Fourth generation) (ATM adaptation layer) ATM (Acknowledgment) (Application) (Access service network) (Code model request) (Digital video broadcast) - - (Adaptive coding and modulation) (Adaptive multirate wideband) (Automotive repeat request) (Asynchronous transfer mode) (Additive white Gaussian noise) (Bandwidth delay product) (Binary increase congestion control) (Bandwidth on demand) (Binary phase-shift keying) (Constant coding and modulation) (Channel quality information) (Continuous-rate assignment) (Compound TCP) (Demand assignment multiple access) (Delay since last sender report) (Digital video broadcast return channel by satellite) (Digital video broadcast by satellite) (Digital video broadcast satellite transmission nd generation) (Expedited forward) (European Telecommunications Standards Institute) (Ethernet) GSM (Forward error correction) (Fixed satellite service) (File transfer protocol) (Geostationary earth orbit) (Global system for mobile communications) (GSM adaptive multi-rate) G G AAL ACELP ACK ACM AMR-WB APP ARQ ASN ATM AWGN BDP BIC BOD BPSK CCM CMR CQI CRA C-TCP DAMA DLSR DVB DVB-RCS DVB-S DVB-S EF ETH ETSI FEC FSS FTP GEO GSM GSM-AMR

7 5 ITU-R S.897 (GSM enhanced full rate) (Hypertext transfer protocol) (Institute of Electrical and Electronics Engineers) (International Organization for Standardization) (ITU-R Study Group) (ITU-R Working Party) GSM (Gateway terminal) (Gateway) (Internet protocol) (Local area network) (Line of sight) - MAC - MAC - (Modulation and coding) (Packet data unit) (Packet error rate) (Physical layer) (Phase shift keying) (Quality of service) (Receiver report) (Real time) (Roundtrip time) (Medium access control) (MAC common part sublayer) (MAC convergence sublayer) (Multiple-frequency time-division multiple access) (Multiplicative increase multiplicative decrease) (Moving picture experts group) (Network control center) (Orthogonal frequency division multiplexing) (Open system interconnect) (Quadrature phase-shift keying) (Return channel satellite) (Return channel satellite terminal) (Real time transport control protocol) (Radio resource allocation) (Radio resource management) (Retransmission on time out) (Signal to noise interference ratio) (Selective acknowledgement) GSM-EFR GT GW HTTP IEEE IP ISO ITU-R SG ITU-R WP LAN LOS MAC MAC-CPS MAC-CS MF-TDMA MIMD MODCOD MPEG NCC OFDM OSI PDU PER PHY PSK QoS QPSK RCS RCST RR RRA RRM RT RTCP RTO RTT SACK SNIR

8 ITU-R S (Sender report) (Scalable TCP) (Transmission control protocol) (Time division multiplexing) (Time division multiple access) (Time of last sender report) (Type of service) (Television) (User datagram protocol) (User equipment) (Variable coding and modulation) ) - (Voice over Internet protocol) (Variable rate real time traffic jitter tolerant) (Variable rate real time traffic) (IEEE 8. (Wireless fidelity (products based on IEEE 8. standards) - (Worldwide interoperability for microwave access) SR S-TCP TCP TDM TDMA TLSR ToS TV UDP UE VCM VoIP VR-JT VR-RT WiFi WiMAX -. WiFi.WiMAX. Ka (DVB-S) (GEO).WiMAX / WiFi ((RCS) VoIP (RCST ) DVB-RCS. RCST (GTs).

Generation :DVB-RCS DVB-RCS: DVB Return Channel by Satellite WAP: Wireless Access :WAP Point RCST: Return Channel

9 7 ITU-R S.897.(ACM) DVB-S ( ).DVB-RCS ( ) WiFi/WiMAX DVB-S/RCS RCST HUB BT WiMAX RCST Internet WAP :DVB-S DVB-S: Satellite Transmission nd Generation :DVB-RCS DVB-RCS: DVB Return Channel by Satellite WAP: Wireless Access :WAP Point RCST: Return Channel Satellite Terminal :RCST S.897-.DVB-S DVB-S. (FEC) 8..(SNIR) ( ) (VCM) ( ) (CCM) ( ).(ACM) (MF-TDMA) DVB-RCS - MF-TDMA..Reed Solomon MF-TDMA. ATM 5 (ATM).(MPEG-)..Ka. (MAC).WIMAX WiFi (DiffServ) WiFi- ( ) ( )..

10 ITU-R S APP UDP/RTCP IP MAC ETH IP MAC ETH HUB NCC IP IP over S AL DVB-S PHY AAL5 ATM MF- QPSK IP IP over S AL DVB-S PHY RCST DVB-RCS RRM AAL5 ATM MF-TDMA QPSK MAC ETH IP MAC ETH GSM, G, G WiFi IP MAC PHY (8., GSM,...) APP UDP/RTCP IP Generic MAC Generic PHY S G WiMAX WiFi G GSM. (RRM).DVB-RCS RRM.(NCC) (HUB) RCST. NCC. WiMAX-.WiMAX DVB-S/RCS.

11 9 ITU-R S.897 DVB-S/RCS WiMAX WiMAX RCST N HUB RCST RCST NCC WiMAX- IEEE 8.6.WiMAX-.(UE) (VoIP ) IEEE 8.6 (BS).WiMAX UE. UE. (PER) WiMAX (RRM). RRM.DVB-RCS (RRM) (ASN).(NCC) (HUB) RCST. NCC. MAC WiMAX RRM..( ) (MAC-CS) (MPDU MAC) (MAC-CPS). MAC-CS (OFDM) IEEE 8.6.MAC MAC-CPS.( GHz,5 ) S (TDM) (BS) VoIP (QoS).(ARQ) (FEC)..

PHY AAL5 ATM MF- QPSK IP S IP AL DVB-S PHY AAL5 ATM MF- QPSK IP MAC ETH IP MAC ETH IP MAC ETH IP MAC ETH IP (CS) 8.

12 IEEE 8.6e-5 / DVB-RCS ITU-R S.897 IEEE 8.6 ASN APP UDP/RTCP IP MAC ETH HUB NCC RCST DVB-RCS RRM MIP ASN-GW WiMAX RRM WiMAX RRM UE MAC ETH IP S IP AL DVB-S PHY AAL5 ATM MF- QPSK IP S IP AL DVB-S PHY AAL5 ATM MF- QPSK IP MAC ETH IP MAC ETH IP MAC ETH IP MAC ETH IP (CS) 8.6 MAC (CPS) 8.6 PHY APP UDP/RTCP IP (CS) 8.6 MAC (CPS) 8.6 PHY : WiMAX BS (RRC) ASN-GW BS (RRA) (ASN) ASN :A. (RRM) ASN-GW BS :B.BS RRM :C A B. RRM ASN-GW C...WiMAX.ASN RCST IEEE 8.6 BS ASN-GW.

13 ITU-R S (QoS) (WiMAX WiFi ) -. ) (VoIP).(FTPs HTTPs..ITU-R S. DVB-S.DVB-S.( 6 ) ( 6 8) (FEC). () + Ka.. MAC. ( ) MAC Es/(N+I) MAC.. FEC Es/(N+I). ( ). 7 MPEG (TCP/IP) (ISO/OSI)... WiFi- (QoS) 5 (VoIP).

14 ITU-R S.897.(RCST) (GT) DVB-RCS (ACM) DVB-S.(MF-TDMA) 5 RCST RCST DVB-S.. Shannon (ACM). DVB DVB-RCS (MF-TDMA).DVB-S 5 A(TM).Reed Solomon.MPEG-.. OPNET (BOD). : n (GT[i]) (i).(n- ). 6. GTs (GT[i] ) n+5 (CRA). " ".

15 ITU-R S.897 GT[i] (GT[i] ) n+9 GT[i]. (n+9)... : Sat_up_dn_offset (TDM) 6.. (TOS) (CRA).. DVB-RCS : total_avail = bulk_alloc CRA; score[i] = queue_length[i]*class_weight[i], i=..; total_score = sum(score[i]), i=..; total_length = sum(queue_length[i]), i=..; for(i = ; i < ; i++) :

$897 { if(total_avail >= total_length) then alloc = queue_length[i]; else alloc =$ total_avail*score[i]/total_score; total_avail -= alloc; total _length -= queue_length[i]; }.

16 ITU-R S.897 { if(total_avail >= total_length) then alloc = queue_length[i]; else alloc = total_avail*score[i]/total_score; total_avail -= alloc; total _length -= queue_length[i]; }. (DAMA). -.. DVB 7. A A OPNET (LLQ) CQ. README TOS Client TOS 5 Client TOS TOS Client TOS 6 Client TOS A A TOS Client TOS 7 Client TOS TOS Client TOS 8 Client TOS... :. TOS TOS 8 TOS :. -. / 5

17 5 ITU-R S :G.79 :(VoIP).,65,5 "". = TOS.. 8. = TOS 6 :(HTTP) = TOS 7 :. 5. = TOS 8 :(FTP) ( %5 %5) : 5 8 () 7 () () () Mbit/s,8 : db db/s,5 8 db/s,5 6. :(PHY-MAC)

18 ITU-R S ( %8 A ). 5..( %5 ) - 8 A -... (VoIP). (HTTP)

19 7 ITU-R S A.,.,

20 ITU-R S (TOS)..( )..,6..,5.,7.ms 6.

21 9 ITU-R S.897 = TOS.(HTTP) :. 5 5.,6,97.,75 = TOS HTTP

22 ITU-R S.897 / :... (TCP/UDP). (TCP). UDP (UDP) TCP (TCP). (RENO) (SACK) TCP.. 75 TCP. TCP. 5 UDP UDP TCP TCP TCP.,.,. TCP TCP.(MAC).. (TCP).

23 ITU-R S.897 UDP UDP TCP TCP.. DVB-S /DVB-RCS (VoIP).(TCP/UDP) - (PHY-MAC) / DVB-RCS DVB-S.(TCP/UDP). OPNET. WiFi OPNET 5 A. A. B

24 ITU-R S (LLQ) CQ README TOS TOS TOS TOS A A Router B Base_station TOS TOS TOS TOS A.A B. ( ). (VoIP) (FTP) (HTTP) (MAC) (DiffServ). - (VR-RT) - (RT)..(JT) (VR-JT) :... (HTTP) (VoIP). (FTP). (MAC). %88,5 (ACM)

25 ITU-R S (TOS) db : ( ), -> JT -> VR-JT -> VR-RT,5,6 -> RT RT VR-RT VR-JT - JT 5 6 ( db/s,5 8 db/s,5 6 : ) Mbit/s, ( ).5

26 ITU-R S.897 ( ) () () () () () () () () () () () () () () () () kbit/s 5 kbit/s 6 kbit/s 5 kbit/s 6 kbit/s 5 kbit/s 6 kbit/s,5 kbit/s 5 kbit/s 6 kbit/s 8 5 kbit/s 8 5 (VoIP) (VoIP) (HTTP) (HTTP) (FTP) (FTP).. (VoIP) : (HTTP) (G.79 ) WiFi SATCOM.(FTP). DVB-RCS DVB-S SATCOM (GTB) B (GTA) A 6....

27 5 ITU-R S GT_B GT_A DAMA (A ) (B )..... m 5 m m (TOS). 7b 7a 7c....

28 CQ_net () / : CQ_net () / :.... ITU-R S = TOS 7a (/). CQ_net. () / ) : (/) CQ_net () / ) : ().... m 5 m m

29 7 ITU-R S CQ_net () / : = TOS 7b (/) 6... CQ_net () / : CQ_net () / ) : (/) CQ_net () / ) : ().... m 5 m m.,,58 (7b ).

6...... ITU-R S.897 8 7c = TOS CQ_net Annotation: Streaming traffic/video conferencing (streaming multimedia) 7. 5.

CQ_net Annotation: client TOS -> server TOS ( streamingstreaming traffic/video conferencing multimedia ()). () 5.

30 ITU-R S c = TOS CQ_net Annotation: Streaming traffic/video conferencing (streaming multimedia) CQ_net Annotation: Streaming traffic/video conferencing (streaming multimedia). (/) (/). CQ_net Annotation: client TOS -> server TOS ( streamingstreaming traffic/video conferencing multimedia ()). () CQ_net Annotation: client TOS -> server TOS ()) streaming traffic/video conferencing (streaming multimedia. ().... m 5 m m :(VoIP) ,5,5.,5,8.,.5.,5

6 5 ().7.6.5......8.6..... m () 5 m m :(HTTP).

31 9 ITU-R S (G.79 ) VoIP = TOS 8 (/) () m () 5 m m :(HTTP)

32 / : ITU-R S (HTTP) = TOS 8 (/) HTTP / : / : / : / : (/) HTTP HTTP () HTTP HTTP () HTTP m 5 m m (FTP)

33 ITU-R S m (FTP) ( ) FTP_heavyfile : (/) FTP ( ) FTP_heavyfile : (/) FTP ( ) FTP_heavyfile : () FTP ( ) FTP_heavyfile : (/) FTP ( ) FTP_heavyfile : (/) FTP ( ) FTP_heavyfile : () FTP 5 m m (TOS) (CRA ) ().(HTTP) (TOS )...(TCP) (TOS) HTTP,,97,9,56,58,69 TOS,8,,,5,8, TOS,6,98,65,99,65,9 TOS ,8,7,97,7 TOS. -

34 ITU-R S DVB-S (HTTP) (VoIP).(QoS) (FTP). WiMAX- (VoIP). WiMAX DVB-RCS/S. (VoIP) ( ) :. (RTCP).( ) ( ).(GEO) VoIP.(RTCP) (VoIP).RTCP. (RTCP) RTCP (RTP) (SR). (RR)... RR RTCP......

35 ITU-R S.897 (RTCP) APP UDP/RTCP IP MAC ETH IP MAC RTH S IP AL DVB-S PHY HUB IP AAL5 ATM MF-TDMA QPSK S IP AL DVB-S PHY IP AAL5 ATM MF-TDMA QPSK RCST IP MAC ETH APP UDP/RTCP IP MAC ETH G.7 RTCP " " (kbps) 6 8 / PCM * CS-ACELP ITU-T G.7 G.79 G.7.. (DLSR). RTCP (TLSR). RTCP..... (VoIP) ( ).RTCP. ( ) RTCP. (AMR-WB).. (RTCP).(AMR-WB) *

36 ITU-R S.897 (AMR-WB) (ACELP) (GPP TS 6.5) (GSM) (EFR).(GPP TS 6.7) GSM (AMR). (AMR-WB) khz,8 Hz 7 6.Hz khz,8 ms.( (ACELP) ).. (CMR) -... (AMR-WB). CMR.VoIP ( ) CMR CMR..RTCP () : AMR-WB RTCP () RTCP ITU-T G.7 AMR-WB.VoIP RTCP AMR-WB. VoIP WiMAX-. () T tot = Tcodec + Tnetwork + Tnetwork + Ttplayout () i T network i T i MAC + T i trans + T prop.. : =, i= (DVB-S/RCS), (WiMAX) T = T + T + T + : () codec fr la proc pack T T codec

37 5 ITU-R S.897 T la T fr IP T pack T i MAC. T proc ( ) i T i prop.i T i trans.i (MAC)..(GEO) T playout. : (EF). ms 7 (MAC) Mbit/s (EF).( ms ).AMR-WB Mbit/s,5. VoIP.dB RTCP..(EF) : RTCP (RTCP ) ( ) AMR-WB ITU-T G.7 AMR-WB VoIP RTCP.. DVB-S (Rs) MHz.(m η m ) (ACM) : VoIP (N u,max ) (RCST) t pckt R VoIP R VoIP t pckt ( /8/ RTP/UDP/IP). i T f i VoIP i RTP n = n + h + h + h.t f η m R s DVB-S.. UDP IP : (n VoIP ) VoIP.. N RTP ( ( ( ( : () N u T f η = i n m VoIP R s

38 ITU-R S db DVB-RCS.( ) AMR-WB () RTCP AMR-WB / G. 7 ( ) G ( ) (dB ).. db 5 db.db 8 %5 VoIP (DVB-S) G.7 ) 5 G.7. G.79 (VoIP (db)

39 7 ITU-R S.897 u se r s ) P V oi ( y a cit ) m cap (VoIP S yste VoIP (DVB-RCS) 5 G.7 G.7. G (db) MHz.(DVB-RCS).ms 6,5 (T f ).VoIP..WiMAX (UE) (BS). 5 WiMAX VoIP u se r s ) V oi P ) ( a cit y m cap (VoIP S yste G.7 G.7. G (km).8

40 ITU-R S (CQI). VoIP.(ACM).( ) 5. (BS) (RCST) MHz. VoIP.km WiMAX.% %6 DVB-S/RCS VoIP..WiMAX VoIP VoIP ( :.WiMAX (. % %7 5. (TCP) (GEO) (RTT).(TCP) TCP ITU-R S.7.(PER) TCP.(BDP)..Westwood+ Hybla SACK New Reno TCP Hybla Westwood+ SACK New Reno (TCP).(BIC) Scalable Compound Veno.Reno NewReno (RTO ) NewReno. ACKs

41 9 ITU-R S.897 (SACK) SACK. (cwnd) Westwood+ Westwood.NewReno Bwe (ssthresh) Westwood.RTT Bwe ssthresh. RTT B we = ssthresh :RTO. cwnd B we. cwnd.ack ACK cwnd Hybla. RTT cwnd SACK Hybla. Veno.Vegas Reno.(TCP) Vegas. cwnd..tcp (S-TCP).(BDP) "" S-TCP α (MIMD) - S-TCP.,5 = β,, = α. β ACK (dwnd) (C-TCP) cwnd.c-tcp cwnd C-TCP.C-TCP. dwnd (BIC) (TCP) BIC. TCP. BIC.. (GEO) (TCP ).. (TCP ). ACKs ( )

42 ITU-R S GEO GEO bent-pipe satellite Router / / Mbit/s / 6 ms Earth Station Router Client Mbit/s ms Earth Station Satellite IP network Mbit/s ms Server Router buffer capacity (DBP) set to DBP with droptail policy MHz Ka (GEO) (PHY) (MODCOD). MODCOD.DVB-S.(IP datagrams).ms 6.ms ( ) Mbit/s (RTT).ms 56 (LoS) : ( ) ( ) (AWGN) 5 (PER) (ARQ) 6 ARQ.TCP (RTO) ( TCP ) (FTP). TCP (ACM). ACK TCP (MODCOD )...

43 ITU-R S.897 QPSK BPSK../ 7 / NASA Viterbi : (MHz ) (MODCODs) / (BPSK) :# Mbit/s / (QPSK) :#.Mbit/s 56 (BDP). 5.# ( ) 68 # ( 7 ).(# # BDP ) # BDP. " ".ns-.9 : # # E b /N. E b /N ) (PER) :a (ACM) ** ) " " :b.( PER E b /N.TCP.TCP PER E b /N TCP 7 a..( ) ( ) TCP.# #..# # PER # # 7.b.( ) E b /N Hybla Westwood+ SACK NewReno 8.BIC-TCP TCP TCP Veno 9 TCP # #..Westwood+ Hybla TCP.TCP ** " ".

44 ITU-R S (BPSK ) E b /N (TCP) %7± %95 a b it / ) p u t( d o g T CP ( ) TCP x 6 x 6 x 6 PER =. 6 8 Hybla Westwood+ SACK NewReno EN E b / (db) b /N (db) M bit / ) ( p u t d o g P T C ( ) TCP x 6 x 6 x 6 PER =. 6 8 Hybla Westwood+ SACK NewReno EN E b / (db) /N (db) b 8 (Hybla Westwood+ SACK NewReno) TCP b (BPSK ) E b /N %7± %95 b i t /s ) ( M g o d p u t T CP (/ ) TCP Hybla Westwood+ SACK NewReno Hybla 6 8 EN E b / b (db) /N (db) NewReno SACK Westwood+

45 ITU-R S (BIC Scalable Compound Veno) TCP b (BPSK ) E b /N %7± %95 b it/s ) ( M g o d p u t (/ ) TCP T CP TCP Veno S-TCP C-TCP BIC TCP 6 8 E b /N (db) ".. (TCP) "." " TCP.(TCP) (PHY).. : WiFi (VoIP) / (HTTP) ( ) (TCP/UDP) ) ( 5 6

46 ITU-R S.897 ( ),859 ( ),5 VoIP,5,8 ( ),,5,5 6 HTTP ( ) WiMAX- VoIP.dB 5 db ( ) db 8 %5. %7 WiMAX- ( ) %.(5 )

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