AnySee: ??P2P??????????

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AnySee ??P2P??????????

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• hjin_at_hust.edu.cn

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• ???M???G
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• ?IPv4?IPv6??
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• AnySee??????
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• AnySee????
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P2P???????

• P2P?????????
• 2004?6????????????,??????????????????????P2P??????
  ??????????????(IDG??)
• ?????????(peercasting)???
• ????????????????????????
• ???Medianet?????
• ????????
• ????????????VoD

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??????????? Peercasting and Flexible TV

• 2004?6?BBC?????????(Flexible TV)????????????
  ????????????BBC????????,????????????????BBC?????
  
• ??BBC??????,????,?????????????,???????????

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??????????? Peercasting and Flexible TV

• BBC??P2P?????Peercast??
• ????????Peer-to-Peer?????????????????????
• ??????????????,???????????????????,??????????????
• ????????????,??????
• ??????????????????
• ??????????-????(????)

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P2P???????

• ??P2P??????????
• ESM?PeerCast?CoopNet?splitStream?GnuStream?Collect
  Stream
• ????????
• ?????
• ?????
• ?????

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• ????????????
• ?????????,????????
• ESM ? ZigZag? DirectStream? P2Cast

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?????

• ???????????????
• ??????????????
• ????,????
• PROMISE? CoopNet ? GNUStream
• ??
• ?????????????????
• ????????????
• ???????

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• ????????
• ????????????????
• ????????????,??????????????,???????
• HoneyComb

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?????????

• ?????????QoS???
• ????????????
• ESM?????????????????
• ???????????????
• AnySee ??IP??????????

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AnySee??????

• ????
• ??????????
• ??????????
• ?????????
• ?????????

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???
???????
???? (asf?avi?nsv?mp3?)
???
Shoutcast/ window media encoder
??/?? ??
Broadcast
?????
AnySee??????
?????
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???????

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• ??????????????????
• ????????????????,??????????
• ?????????????2004??????GCC???????????
• ??????
• ??????????????????????

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?????
????--NearCast
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????
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??
?7?
?13?
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• ????WINDOWS/LINUX
• ????---???????????
• ????---?????????

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?????

• ??NearCast??,????????????????????????????????????Q
  oS
• ??????????,?????????????P2P????????,????????QoS
• ?????????,?????????????????????????????????,????

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????

• Landmark
• ???????
• NAT Firewall???
• Buffer????

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Landmark

• ?AnySee?,????Nearcast???,????????????,????landmark
  ????????????
• Landmark???56???????,??????????????????????????

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Landmark
????????
8?
16?
16?
4?
4?
8?
????AnySee?Peer???????Landmark?,???????IP?????????
??????
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Landmark

??,?????????Peer?Landmark?? 00000001 0001 0001
00000001 0000000000000001 0000000000000100
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• ALM(Application Layer Multicast)

• AnySee???????????,?????????????????????????,??????
  ??????
• Nearcast????????QoS,?????
• ?????????AnySee?????????

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ALM(Application Layer Multicast)

• ?????

Broadcast
?????
Peer
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ALM(Application Layer Multicast)

• ?????

Broadcast
?????
Peer
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ALM(Application Layer Multicast)

• ???????

Broadcast
????
Peer
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ALM(Application Layer Multicast)

• ???????

Broadcast
????
Peer
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ALM(Application Layer Multicast)

• ???????

Broadcast
????
Peer
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ALM(Application Layer Multicast)

• ???????

Broadcast
????
Peer
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• NAT Firewall???

• NAT Firewall?Peer???AnySee?????

?????
Broadcast
NAT or Firewall
Peer
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• NAT Firewall???

• ?NAT or Firewall?Peer????????????????????????

?????
Broadcast
NAT or Firewall
Peer
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Buffer????

• Buffer????
• ??????????
• ?????
• p2p???????
• AnySee?Buffer????
• ??peer?????buffer,????????????
• Buffer????????????????
• Buffer???????????????
• ??????????????????

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Buffer?????
Data packets(40?)
Header packet
Seq arrivaltime headerseq timestamp data
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Buffer????(?)
Data packets(40?)
Header packet
000000
000010
000020
000040
000041
???
???
???
000000
000041-000000gt40
?????????????buffer??????????????40?,??buffer???
????
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Buffer????(?)
Father peer
Data packets(40?)
Header packet
Buffer??????????????????????????? ????????????????
Child peer Or Player
Header packet
???
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(No Transcript)
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http//grid.hust.edu.cn/anysee
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AnySee?????(1)

• 2004?????
• ??????pc?,2-3??
• ????????????????
• ????10000????

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AnySee?????(2)

• ?????????????????
• ????896???,?????????
• ????IPOA??,??2Mbps

Internet
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Anysee?????(3)

• ????????????
• ??pc?????????
• ?????????
• ???????????

http//tv.hustonline.net/index.aspx
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AnySee?????(1)

• ???????
• ??????
• ??
• ??????????ALM??
• ????????????
• ?????????????
• ?????????

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AnySee?????(2)

• ??IPTV??????
• ??Peer??????????????
• ????IPTV?????????
• ??
• ?????????????????????
• ????????????
• ???????????ALM
• ???????

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AnySee?????(3)

• ??????
• ??Ad-hoc??
• ???????????????
• ????????????
• ????

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