Information-Centric Networking & the Ψ Architecture George C. Polyzos Mobile Multimedia Laboratory...
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Information-Centric Networking & the Ψ Architecture George C. Polyzos Mobile Multimedia Laboratory Department of Informatics Athens University of Economics & Business Athens, Greece [email protected] Dept. of Computer Science & Engineering University of California, San Diego [email protected]
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Transcript of Information-Centric Networking & the Ψ Architecture George C. Polyzos Mobile Multimedia Laboratory...
Information-Centric Networking
& the Ψ Architecture
George C. Polyzos
Mobile Multimedia Laboratory
Department of InformaticsAthens University of Economics & Business
Athens, [email protected]
http://mm.aueb.gr/
Dept. of Computer Science & EngineeringUniversity of California, San Diego
[email protected]://cs.ucsd.edu/~polyzos/
ICN talk Outline
Introduction, motivation, overview The Pub/Sub Internet (Ψ) Architecture
pub-sub, rendezvous identifiers forwarding/LIPSIN prototypes, testbeds, and evaluation
Security aspects Mobility support Continuous Media/Multimedia The role of Satellites Discussion & Conclusion
Connecting Wires the past…
Interconnecting Computers the current Internet evolutionary development … started decades earlier
Interconnecting Information the Future Internet revolutionary research
10-15 years in the future tussle resolution at or near run-time Trust-to-Trust principle
InternetHistory and Outlook
At the beginning… cooperation; no competition… no commercial traffic! endpoint-centric services/E2E
Now… Content distribution…
>50% of traffic today is video↑ Overlays… DPI by ISPs… Trust? Endpoint trust?
viruses, phishing, DoS attacks… E2E?
NAT, firewalls, middleboxes, CDNs The sender has the power… Tussles…
e.g.: privacy vs. accountability
towards…
Information-Centric Networking
Publish-Subscribe Internet Vision information centrism
everything is information & information is everything Recursive & and generalized use of publish-subscribe
enables dynamic change of roles between actors Network cache
publishes info (cached) subscribes to get info to cache
Access Points publish ID mobiles subscribe
Objectives Specify, implement, & test
an internetworked pub/sub architecture follow a clean-slate design approach
Perform qualitative and quantitative evaluation Security and socio-economics important! Migration and incentive scenarios important (e.g., overlay)!
Our ICN-related Research Projects
PSIRP: Publish Subscribe Internet Routing Paradigm FP7 ICT STREP, 2008-2010
the basis focus on (inter)-networking
PURSUIT: Publish Subscribe Internet Technologies FP7 ICT STREP, 2010-2013
extending, above & below the Internet layer optical, wireless, mobility, transport…
Euro-NF: Anticipating the Network of the Future—From Theory to Design FP7 ICT Network of Excellence, 2008-2012
ASPECTS, GOVPIMIT, E-key-nets
EIFFEL: Evolved Internet Future For European Leadership FP7 ICT SSA, 2008-2010; Think-Tank continued June 2011 TT @ MIT: Information-Centric Networking
φSAT: The Role of Satellites in Future Internet Services European Space Agency funded 2011-2013
ICNtimeline
Van Jacobson
papers/talks projects
“A Survey of Information-Centric Networking Research,” forthcoming
CCN
ICN Research Community workshops…
with ACM SIGCOMM ICN 2011 (Toronto) ICN 2012 (Helsinki) ICN 2013 (Hong Kong):
3rd ACM SIGCOMM ICN workshop– Abstract: March 10– Paper: March 17
with IEEE INFOCOM NOMEN 2012 NOMEN 2013
ICNRG@IERTF Journal & Magazines Special Issues
The PSI (Ψ) Architecture
Pub/Sub Internet Architecture
Clean-Slate Native
Two different prototype implementations exist Blackhawk (PSIRP) Blackadder (PURSUIT)
Basic PSI Functions Publications
information/content metadata
Subscriptions (interests) asynchronous
& in any order Rendezvous: Matches
publications with subscriptions & initializes the forwarding process
Topology: Monitors the network and it creates information delivery paths
Forwarding: Implements information forwarding
Ψ Publication
N. Fotiou, D. Trossen, G.C. Polyzos, “Illustrating a Publish-Subscribe Internet Architecture,” Telecommunication Systems, Springer, vol. 52, no. 3, pp. 233-245, 2012 (Special Issue on ‘Future Internet Services and Architectures: Trends and Visions).
‘Caching’ or Multiple Information Providers & Multiple Paths
G. Xylomenos, et al., “Caching and Mobility Support in a Publish-Subscribe Internet Architecture,” IEEE Communications Magazine, feature topic on ‘Information-Centric Networking,’ vol. 50, no. 7, pp. 52-58, July 2012.
Building Blocks in Ψ: Bubbles Needed to implement the
3 basic functions:
Rendezvous, Topology & Forwarding (RTF)
The bubble concept is akin to the current layering model
The basic building block of functionality at all levels
from OS through LAN to Global Internetwork
Bubbles offer availability and extensibility through the recursive execution of basic functions
Secure Forwarding Mechanism Forwarding based on Bloom filter (called zFilter) that
contains all the link IDs through which a packet has to travel Supports multicast Hashing
False positives Limitations in size
Hierarchical / inter-networks
Link identifiers are unique per information flow zFilter creation involves an encryption mechanism
DoS attack resistant Almost impossible to
redirect an information flow send arbitrary packets to a destination
zFilters Based Forwarding
P. Jokela, et al., “LIPSIN: Line Speed Publish/ Subscribe Inter-networking,” Proc. ACM SIGCOMM 2009.
Prototype Implementations & Testbeds
PSIRP Testbed (w/ Blackhawk)• 6 countries: UK, FI, GR, D, BU, US
• In addition: Belgium during ICT demos• Tunneled over the public Internet
• +dedicated fiber where available
PURSUIT Testbed (w/ Blackadder)• 25 nodes• 5 countries: UK, FI, GR, D, US• Tunneled (VPN)
• over the public Internet
PURSUIT
PSIRP
D. Trossen and G. Parisis, “Designing and realizing an information-centric internet,” IEEE Communications Magazine, vol. 50, July 2012. - https://github.com/fp7-pursuit/blackadder
Caching and replication
All content sources are equivalent in PSI Origin, cache, or replication point Chunks can be retrieved from different sources Sources are visible to the network Network-level caching
Caching vs. replication Similar to the user, different to the network Replication is planned (as in CDNs) Caching is opportunistic (as in P2Ps) PSI handles both in a unified manner
On-path caching
Very lightweight bypasses
rendezvous network
Good for multicast error
control
Local RENEu
Local RENE
RSub
Internet
Global RENE
Sub
RP
1b
2
3
Sub2
Pub
4
FN
Sub1
5
1a
Off-path caching
Uses the rendezvous network
to serve more users
Good for local
(access network) caching
u
RSub
Internet
Sub
RP
1
2
3
Sub
Pub
Cache
4a 4b
Local RENE
Local RENE
Global RENE
Content replication
The rendezvous network chooses the best source
Good for CDN-like proactive replication
RPSub
Internet CDN
1
2
3a
4b
3b
Sub
Pub
4a
Local RENE
Local RENE
Global RENE
Security Requirements
Publications confidentiality publications should not be revealed to unauthorized subscribers
Subscription confidentiality user subscriptions should be kept secret
Integrity, Availability Authentication, Anonymity Accountability Information Scoping
Scopes: Ψ’s Information Firewalls
Scopes allow for information location as well as for control of information dissemination
Can be physical…. e.g., a sub-network
… or logical e.g., my friends in Facebook
In scopes, access control and accounting mechanisms are/will be implemented
Access Control Enforcement Delegation Motivation
Kazaa: 50% of versions and copies polluted [INFOCOM’05, Liang et al.] Kazaa: 15% infected by 52 different viruses [SIGCOMM06, Shin et al.] Limewire: 68% of executables, archives is malware [SIGCOMM’06, Kalafut et al.]
Observations users can change behavior,
information cannot! Information identification is easier
Hash function vs. Certificates Design
only positive, implicit votes only 1 vote /item /publisher no communication overhead
weight of a vote: 1/(Σ votes of pub in this set )α
N. Fotiou, G. Marias, G.C. Polyzos, “Access Control Enforcement Delegation for Information-Centric Networking Architectures,” Proc. ACM SIGCOMM ICN, August 2012.
Information Identification
facebook.com/nikos/pics/ IMG32010234
May give a location hint, denote the principal/owner
Associated with an access control policy
Handled by a (set of ) dedicated network node(s)
Identifies uniquely the information object (globally or within the prefix)
Prefix Suffix
• Users can create prefix, advertise prefix/suffix pairs, request prefix/suffix pairs
PSI Implementation Prefix: Scope Identifier (SId) Suffix: Rendezvous Identifier (RId) SIds are managed by the Rendezvous node
Users can advertise data and subscribe to data Information flow:
Define access control policy: who can advertise, who can subscribe
Provide Credentials
A subscriber has properly authenticated himself and requests item X
Benefits
Consumer credentials protected Minimum user intervention RP has no access to consumer’s personal information RP does not have to implement any access control policy Access control policies can be re-used
Even by users who do not know their content “Access Control Store”
Access control policies can be easily modified
Mobility and Privacysupport
Bubbles support mobility as well as location privacy
N. Fotiou, K.V. Katsaros G.C. Polyzos,
M. Särelä, D. Trossen, G. Xylomenos,
“Handling Mobility in Future Publish-Subscribe Information-Centric Networks,” Telecommunication Systems, Springer,
Special Issue on ‘Mobility Management in the Future Internet,’ to appear.
Packet Level Authentication (PLA)
Per packet public key cryptographic operations are possible
at wire speed The network carries only authentic data
Requires third-party certificates Need not be implemented at all nodes
Selected key nodes PLA offers significant energy efficiency Implemented in NetFPGAs
Security Characteristics of Ψ
Pub/Sub restores the imbalance of power between sender and receiver(s)
No information flow until explicit signal for Interest for specific piece of information
Anti-Spam mechanism Availability of a specific piece of information
Anti-DoS mechanism
Pub/Sub facilitates Anonymity Mobility Multihoming
Message aggregation Resource sharing (e.g., with multicast)
InfoRanking: lightweight mechanism to distinguish and isolate polluted information Motivation
Kazaa: 50% of versions and copies polluted [INFOCOM’05, Liang et al.] Kazaa: 15% infected by 52 different viruses [SIGCOMM06, Shin et al.] Limewire: 68% of executables, archives is malware [SIGCOMM’06, Kalafut et al.]
Observations users can change behavior, information cannot! Information identification is easier
Hash function vs. Certificates Design
only positive, implicit votes only 1 vote /item /publisher no communication overhead
weight of a vote: 1/(Σ votes of pub in this set )α
N. Fotiou, G. Marias, G.C. Polyzos, “Information Ranking in Content-Centric Networks,” Proc. Future Network & Mobile Summit, Florence, Italy, June 2010.
Security & Privacy E2E direct trust not applicable
– Current Internet does not support it either– Socioeconomic trust through mediators (e.g., Rendezvous Providers) D. Lagutin, K. Visala, A. Zahemszky, T. Burbridge, G.F. Marias, “Roles and Security in a
Publish/Subscribe Network Architecture,” Proc. IEEE ISCC 2010, Bologna, Italy, June 2010. Users change behavior, content does not
– Rely on new methods to evaluate content integrity and authenticity– Reputable Content N. Fotiou, G.F. Marias, G.C. Polyzos, "Fighting Spam in Publish/Subscribe Networks Using
Information Ranking," Proc. 6th Conf. on Next Generation Internet, Paris, France, June 2010. End-user privacy can be effectively supported in ICN (@ internetwork level)
– Who asks for what content hidden from content provider, caches– Pub/Sub matching through trusted mediator service (e.g., Rendezvous providers)
– BUT privacy from Rendezvous providers becomes more of an issue Spam & malicious content distribution is blocked
– There is no unsolicited traffic in the network!• Content is delivered after explicit request
– New adversary models P. Nikander, G.F. Marias, “Towards Understanding Pure Publish/Subscribe Cryptographic
Protocols,” Cambridge Security Protocols Workshop, June 2008 .
Advantages of PSI in Mobility Support Decoupling IDs from location Publish/Subscribe is asynchronous and multicast
Adapts better to frequent mobility Publishers & Subscribers can seamlessly & simultaneously move
Data (packets) are identified independently from source or destination Information (cached? content) is still transparently available
Routing and Forwarding decoupling IDs from location is a major advantage
locations are ephemeral no need for triangular routing ingress filtering problem anycast choice of the best source of content
Mobility & user behavior prediction together with proactive caching/prefetching can be used to enhance mobility support
G. Xylomenos et al., “Caching and Mobility Support in a Publish-Subscribe Internet Architecture,” IEEE Communications Magazine, July 2012.
Proactive Selective Neighbor Cachingfor enhancing Mobility Support in ICNMobility Delay can be reduced by using proxies to pre-fetch and cache data
approaches Reactive Durable subscriptions Proactive
Proactive Selective Neighbor Caching mobile initially connected to proxy i select an optimum subset of neighbor proxies
i will send the mobile’s subscriptions, and which will proactively cache
information items matching these subscriptions if the mobile connects to one of these proxies then it can immediately receive information items it did not receive due to its disconnection
Cost Function:
X. Vasilakos et al. “Proactive Selective Neighbor Caching for enhancing Mobility Support in Information-Centric Networks,” Proc. ACM SIGCOMM ICN, August 2012.
Multimedia over Ψ Motive: Multimedia over Ψ
“YouTube” a la Ψ …
Streaming videos without RTP/TCP/IP only native Ψ
Basic Components of the application:
Publisher: the owner of the video Subscriber: the user that seeks to
view the video
Technologies Involved
We tried different applications
Video Audio/voice (VoPSI) ...
Java- JMF player
JPSIRP
JNIPSI
Publish Videos Publish a video or a directory
with multiple videos Define the scope for the video
she uploads to the network Currently done via local
exchange of video knowledge
Subscribe to a Video Search for the desirable video
using the name of the video Currently done via local exchange
of information Subscribe to its PSI-level identifiers Play the video while downloading
Stream Source(e.g. VLC)
Stream Publisher
Local UDP Socket
Publication
Stream Sink(e.g. VLC)
Stream Subscriber
Local UDP Socket
Publication
Publish new versionswith same RId
Subscribe to RId andlisten to updates
Receive datagramsinto a publication buffer
Send updated dataas datagrams
NOTE: The publisher knows the subscriber set for this RId, sends the metadata directly to the subscribers; no rendezvous. Subscriber with metadata for a new version, subscribes to the corresponding data chunks.
Optimization of Real-Time Media DistributionExploit1. Functional organization
Item resolution decoupled from forwarding (path establishment)2. In-network resources
TM nodes → (logically) centralized path/tree formation 3. Stateless multicast forwarding
Compute minimum cost (Steiner) trees for multicast delivery Cost of optimization:
Signaling cost: resolve the subscription → analogous to a DNS or DHT resolution
Computation delay at TM
Evaluation: Emulation of AS 224 (Norwegian Univ. & Research Network) 233 routers, 75 access routers → 75 PSI access networks… For 90% of subscriptions, delay (Steiner - Shortest-path) < 2ms; For 99.6%, < 60ms Steiner-tree byte footprint compared to Shortest-path trees: - 30%, multiple unicasts: -
48%
C. Tsilopoulos et al. “Efficient Real-time Information Delivery in Future Internet Publish-Subscribe Networks,” Proc. IEEE ICNC, San Diego, CA, January 2013.
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An Information-Centric Overlay Network Architecture for Content Distribution and Mobility Support
Ph.D. Dissertation by Konstantinos Katsaros Multicast
Router Assisted Overlay Multicast (RAOM) Deploying multicast functionality in an overlay fashion
Multicast & Caching MultiCache
Enabling caching of data delivered by multicast trees Adapting to the inter-network structure
H-Pastry Canonical version of Pastry
Mobility Support Overlay Multicast Assisted Mobility (OMAM)
Revisiting multicast assisted mobility
K.V. Katsaros, G. Xylomenos, G.C. Polyzos, “MultiCache: an Overlay Architecture for Information-Centric Networking,” Computer Networks, vol. 55, no. 4, pp. 936-947, Special Issue on ‘Architectures and Protocols for the Future Internet,’March 2011.
0 5 10 15 20 25 30 35 40 45 50 55 600
100
200
300
400
Initial deployment
Fast ICN adoption
Saturation
time
# of ICN adopters
φSAT: The role of Satellites in FI Services
Aim: To investigate the technical
feasibility & business viabilityof the integration of SatComwith terrestrial ICN architectures
Results Methodology to identify application/service scenarios where the
capabilities of SatCom and ICN bring highest techno-economic gains Key SatCom capabilities: Broadcast/Multicast, Wide Coverage Key ICN capabilities: Data aggregation, Multipath
Routing, Mobility Support, In-network Caching Candidate scenarios identified
Hybrid Broadcast netTV M2M Communications 4G Backhauling
Socio-economic evaluation Market evolution for each scenario
Data Transport
Name Resolution
Publisher
Subscriber
Name Server
Forwarding Node
Conclusions ICN is well positioned to address
caching, mobility, multihoming, traffic management/QoS, security... evolution: tussles resolved at or near run-time
PSI chose specific name/ID resolvers (for each scope: RP), rather than flooding separation or functions
separate forwarding from resolution (no reverse path) centralized aspects, optimizations, policies well matched to SDN/OpenFlow—all optical forwarding
The PSI architecture inherits the advantages of ICN & the publish/subscribe paradigm
in particular the security ones, but….
PSI selected and added specific security mechanisms Secure Forwarding (zFilters), Scopes, Bubbles, Packet Level Authentication, Information Ranking
PSI: Key Observations and Issues
RIDs: hash of content vs. not... Implications of uniquely indentifying content
Caching (enabled/facilitated) SIDs as special case of RIDs pub/sub “recursively”
at many levels of the hierarchy/network from wire-level to the global Internet perhaps used to realize reliable transport
Granularity of items (to publish/subscribe to): objects, chunks, packets… pub/sub model: documents vs. channels
versions (& IDs) of publications? Algorithmic Identifiers (RIDs)
nice for intra-channel IDs... asynchronous (subscribe before publish) search engines probably still important (at different level?) Wireless?
More Observations, Questions & Issues
Information- vs. Content-centric vs. Named Data vs. pub/sub vs. ... overlay vs. clean-slate vs. hybrid/integrated…
special-purpose nets only? Not global? Rendezvous
powerful trusted
has lots of information... target of DOS attacks networks of RPs = RN belongs to different entities than network provider? competing RNs RP functionality needed at multiple & different levels
Intranet, global... on a wire...
Thank you!
George C. PolyzosFaculty: V.A. Siris, G. Xylomenos, G. MariasPostDocs: C.N. Ververidis, K.V. Katsaros, P. FrangoudisDoctoral cand.: N. Fotiou, C. Tsilopoulos, X. Vasilakos, C. Stais, I. Thomas
Mobile Multimedia LaboratoryDepartment of Informatics
Athens University of Economics and BusinessAthens, Greece
http://mm.aueb.gr/[email protected]
Visiting ProfessorDept. of Computer Science & Engineering
Jacobs School of EngineeringUniversity of California, San Diego
Information-Centric Networking & the Ψ Architecture
Related Publications K.V. Katsaros, G. Xylomenos, G.C. Polyzos, “MultiCache: an Overlay Architecture for Information-
Centric Networking,” Computer Networks, vol. 55, no. 4, pp. 936-947, Elsevier, Special Issue on ‘Architectures and Protocols for the Future Internet,’ Guest Editors: T. Wolf & L. Eggert, March 2011.
N. Fotiou, D. Trossen, G.C. Polyzos, “Illustrating a Publish-Subscribe Internet Architecture,” Telecommunication Systems, Springer, vol. 51, no. 4, Special Issue on ‘Future Internet Services and Architectures: Trends and Visions,’ pp. 233 245, December 2012.
G. Xylomenos, X. Vasilakos, C. Tsilopoulos, V.A. Siris, G.C. Polyzos, “Caching and Mobility Support in a Publish-Subscribe Internet Architecture,” IEEE Communications Magazine, Special Issue on ‘Information-Centric Networking,’ vol. 50, no. 7, pp. 52-58, July 2012.
N. Fotiou, K. Katsaros, G.C. Polyzos, M. Sarela, D. Trossen, G. Xylomenos, “Handling Mobility in Future Publish-Subscribe Information-Centric Networks,” Telecommunication Systems, Springer, Special Issue on ‘Mobility Management in the Future Internet’ (to appear).
P. Zhang, N. Fotiou, B.E. Helvik, G.F. Marias, G.C. Polyzos, “Analysis of the effect of InfoRanking on content pollution in P2P systems,” Security and Communication Networks, John Wiley & Sons, Ltd. (to appear).
C. Doukas, N. Fotiou, G.C. Polyzos, I. Maglogiannis, “Cognitive and Context Aware Assistive Environments Using Future Internet Technologies,” Special Issue on ‘Cognitive Systems for Assistive Environments,’ Universal Access in the Information Society, Springer (to appear).
N. Fotiou, G.F. Marias, G.C. Polyzos, “Publish-Subscribe Internetworking Security Aspects,” in Trustworthy Internet, N. Blefari-Melazzi, G. Bianchi, L. Salgarelli, eds., Springer, May 2011 (pp. 3-15, http://www.springerlink.com/content/g0l4283hq1206128/fulltext.pdf).
more … Related Publications K.V. Katsaros, C. Stais, G. Xylomenos, G.C. Polyzos, “On the Incremental Deployment of Overlay
Information Centric Networks,” Proc. Future Network & Mobile Summit, Florence, Italy, June 2010. N. Fotiou, G. Marias, G.C. Polyzos, “Information Ranking in Content-Centric Networks,” Proc.
Future Network & Mobile Summit, Florence, Italy, June 2010. N. Fotiou, G. Marias, G.C. Polyzos, “Towards a Secure Rendezvous Network for Future
Publish/Subscribe Architectures,” Proc. 3rd Future Internet Symposium, September 2010. N. Fotiou, G.F. Marias, G.C. Polyzos, “Fighting Phishing the Information-Centric way,” Proc. 5th
IFIP NTMS, Security Track, Istanbul, Turkey, May 2012. K.V. Katsaros, G. Xylomenos, G.C. Polyzos, “GlobeTraff: a traffic workload generator for the
performance evaluation of future Internet architectures,” Proc. 5th IFIP NTMS, May 2012. K.V. Katsaros, et al., “On Inter-domain Name Resolution for Information-Centric Networks,” Proc.
IFIP/TC6 Networking), Prague, Czech Republic, May 2012. G.F. Marias, N. Fotiou, G.C. Polyzos, “Efficient Information Lookup for the Internet of Things,”
Proc. First IEEE WoWMoM IoT-SoS, San Francisco, CA, June 2012. X. Vasilakos, et al., “Proactive Selective Neighbor Caching for enhancing Mobility Support in
Information-Centric Networks,” Proc. ACM SIGCOMM ICN'12, Helsinki, Finland, August 2012. N. Fotiou, G.F. Marias, G.C. Polyzos, “Access Control Enforcement Delegation for Information-
Centric Networking Architectures,” Proc. ACM SIGCOMM ICN'12, Helsinki, Finland, August 2012. K.P. Liolis, et al., “Satellite-Terrestrial Integration Scenarios for Future Information-Centric
Networks,” Proc. ICSSC, September 2012. V.A. Siris, C.N. Ververidis, G.C. Polyzos, K. Liolis, “Information-Centric Networking Architectures
for Integration of Satellites Into the Future Internet,” Proc. ESTEL, Rome, Italy, October 2012. C. Tsilopoulos, I. Gasparis, G. Xylomenos, G.C. Polyzos, “Efficient Real-time Information Delivery
in Future Internet Publish-Subscribe Networks,” Proc. IEEE ICNC, San Diego, CA, January 2013.
47
φSAT Scenario #1: Hybrid broadcast netTV
Key drivers for this scenario identificationDTH Broadcasting: 1st market for telecom satellites
Unlimited potential for hybrid access To bring a boost of the link capacity
To increase availability of service and QoE
To add a return link capability for interactive/added-value services
To enlarge service offer (e.g. number of programs for linear / on-demand TV) with several service providers
To favor partnerships and competitiveness and to lower costs
In this context, IP/TV over MPEG-based broadcast brings ease and flexibility for service integration
Common standards to any access network
E.g. service management, native e2e IP transport…
New usages and trends of TV consumption
48
Scenario #1: Hybrid broadcast netTV
Transit Networks
GEO Satcom Network
Content Provider Network
Media Servers
Security -AAA
GW
Fixed Access Network (xDSL, Cable,..)
RVS
RVS
RVS
RVS
RVS
RVS: RendezVous Servers
SD
RVS
RVS
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Smart Transport M2M use caseKey Challenges• Mobility support
ICN Specific Advantages• Information collection and
dissemination to/from
multiple sources/sinks• Information aggregation• Traffic Prioritization• Mobility support• Delay tolerant communications • Reliable real-time SW upgrading
φSAT Scenario #2: Smart M2M Transport
50
Key driver for this scenario Provides advantages in SatCom integration within the 4G/mobile Internet context given the aggressive video traffic growth levels in terrestrial mobile networks.Integrating satellite in a terrestrial 4G infrastructure allows Service Providers to extend their services towards isolated areas and enhance network capabilities for more efficient video content delivery, such as Evolved Multimedia Broadcast Multicast (eMBMS).
Satellite Network ConfigurationGEO or MEO topology In some areas terrestrial repeaters (such as in systems based on DVB-SH and –NGH) could also be used to boost the satellite signal, e.g. for reception in urban areas (Hybrid satellite –LTE system).
ICN potentialQoS based inter-component handover managementOpportunistic/proactive caching for satellite backhauled BSTraffic Aggregation & Caching for operator managed VAS
φSAT Scenario #3: Extended 4G Backhauling
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φSAT Scenario #3: Extended 4G Backhauling
