ITU-T Workshop on
Multimedia in NGN
P2P Telecom Solutions
Ning Zong
Huawei Technologies Co., Ltd.
Geneva, 10-11 September 2007
International
Telecommunication
Union
Telecomm Service Evolution
Any-Access
Browsers
Media service
Web Pages
HTTP
Text-based Applications
Multimedia in NGN
Geneva, 10-11 September 2007
dHeTTP
iMoVoIPRTP
WAPRTSP
Multimedia Applications
International
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C/S Service Model
Users In A
Users In C
Network
Contents In E
Users In B
„Concurrent
Users In D
requests bring server high burden.
„High
device investment are required to deploy
more servers.
Multimedia in NGN
Geneva, 10-11 September 2007
International
Telecommunication
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What’s P2P
„Clients
are organized in a peer-to-peer manner,
i.e., they share information with each other, thus
reduce the burden of server.
Multimedia in NGN
Geneva, 10-11 September 2007
International
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P2P Service Model
Users In C
Users In A
Network
Contents In E
Users In D
Users In B
„Content
burden.
sharing among peers reduces server’s
Multimedia in NGN
Geneva, 10-11 September 2007
International
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Internet P2P (1/2)
BitTorrent
„Fully
make use of Internet resources such as PC
capabilities, network bandwidth, etc.
„Do
not have carriers’ sensorship – NOT manageable.
„Do
the best to provide service – CANNOT
guarantee QoS.
„All
customers are same – CANNOT enable CoS.
Multimedia in NGN
Geneva, 10-11 September 2007
International
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Internet P2P (2/2)
SKYPE
SKYPE
High
High
customer
customer
volume
volume
Lowcarrier
carrier
Low
revenue
revenue
„Internet
Voice
Network
宽带
Resource
技术
Marketing
Stream
Media
Fullof
ofnonnonFull
manageable
manageable
P2Pflows
flows
P2P
PPLIVE
PPLIVE
P2P based services reduce the carriers’
ARPU.
„Carriers’ networks are full of non-manageable
P2P flows.
„Customer volume increases, carrier’s revenue
decrease.
International
Multimedia in NGN
Geneva, 10-11 September 2007
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Telecomm P2P Req. (1/3)
Service Requirements
Multimedia services bring servers high
burden in conventional C/S service model.
P2P service model effectively reduce the
server’s burden by sharing contents among
clients.
9P2P
helps reducing the investment of
deploying multimedia services.
Multimedia in NGN
Geneva, 10-11 September 2007
International
Telecommunication
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Telecomm P2P Req. (2/3)
Carrier Requirements
Internet P2P consumes large amount of
carrier’s resources, but without carrier’s
sensorship.
Carrier can attract more subscribers by
deploying and operating their own P2P
services.
9Telecomm P2P help protecting the carrier’s
investment and increasing carrier’s ARPU.
Multimedia in NGN
Geneva, 10-11 September 2007
International
Telecommunication
Union
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Telecomm P2P Req. (3/3)
Customer Requirements
Internet P2P only does the best to provide
services, i.e., no QoS guarantee, no CoS.
Carrier can provide effective end-to-end
QoS and CoS by operating their own P2P
services.
9Customers
require telecomm level P2P
solutions with improved user experience.
Multimedia in NGN
Geneva, 10-11 September 2007
International
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Telecomm P2P Solutions (1/3)
Client
SIP UA
behind NAT
SIP UA on
Overlay
Mobile
SIP
Terminal
G/W PSTN
P2P
Overlay
Network
SIP Proxy / Registrar
STUN/TURN
Server
Conventional
SIP Terminal
„P2P
overlay makes current SIP network more
flexible, more scalable, more robust and
reduces the cost of deploying network.
Multimedia in NGN
Geneva, 10-11 September 2007
International
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Telecomm P2P Solutions (2/3)
P2P Overlay on WAN
P2P Overlay on MAN
„P2P
overlay reduces the burden of content
server in IPTV content delivery system, and
with the local/inter-domain structure, reduces
the cross-domain flows.
Multimedia in NGN
Geneva, 10-11 September 2007
International
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Telecomm P2P Solutions (3/3)
Separation of P2P function/service
9Common
P2P platform supports various services.
9P2P
platform implements content routing, content
transportation, etc.
9Services don’t care how P2P platform works.
Separation of P2P control/data plane
9P2P
control plane implements content routing,
peer administration, etc.
9P2P
data plane implements content transportation,
traffic management, etc.
Multimedia in NGN
Geneva, 10-11 September 2007
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Telecomm P2P Standardization
IETF - P2PSIP
9P2P
technique is utilized to manage SIP procedure
based on distributed SIP functional entities.
9Issues such as protols between peers, security and
NAT traversal are considered.
DSL Forum - ARCH
9P2P
issues are addressed in WT-144 as one of
general requirements for access network.
Multimedia in NGN
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Thank You
Email: zongning@huawei.com
Tel: +86 25 84565469
Web: www.huawei.com
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