Ambient Networks
Media Delivery
in the
3GPP Framework
Author:
Supervisor:
Instructor:
Outi Koski
Heikki Hämmäinen
Andreas Schieder
Ericsson Eurolab, Aachen, Germany
Contents
 Ambient Networks
– Media Delivery
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Thesis Tasks
IMS
Concept development
Concept implementation
– Feasibility Study
 Conclusions
 Future Work
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Ambient Networks
 A project for mobile and wireless systems beyond 3G
 Designs an affordable and scalable mobile
communication network, that opens up new ways to
communicate, for billions of people and devices
 Aims at the definition of a ubiquitous Control Space
(Ambient Control Space, ACS) applicable for various
types of networks
 Promotes network intelligence and the optimal use of
network resources. Provides ways to overcome
technology differences and operator boundaries
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Ambient Media Delivery
Media
Server
Media
Client
Media Port
3G
WLAN
3G
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WLAN
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Network Abstractions
Ambient Network A
Application
Bearer
Endpoint
Ambient Network B
Session
Application
Ambient
Network
Interface
Bearer
Endpoint
Intermediary
Bearer
Flow
Endpoint
Flow Endpoint
Flow
Flow Transit
Node
Path
Link
Source: Ambient Networks
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Ambient Media Delivery Principles
 The network complexity is hidden from the users and
applications with abstractions
 The network provides the routing, content adaptation
and caching which meet the user needs
 The routing is adapted according to the changes in the
network
 The complexity increases only in the transcoders
(media ports) and not in the end devices
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How to realize these concepts?
?
The Ambient Networks project provides concepts without
relations to the current network architecture
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Thesis tasks
 Literature Study
– Ambient Networks
– Media Delivery
– IP Multimedia Subsystem
 Concept Development
– Ambient Networks Media Delivery in the IMS
 Concept Implementation
– Assembly of the IMS testbed
– Feasibility Study
 Evaluation of the Results
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IMS Architecture
 A part of the 3GPP Network
Architecture
 Designed to deliver IP
multimedia services for mobile
phone users
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Developed Service Concept - AN
Media
Server
Media
Client
2. Media is delivered to
the receivers
Media
Client
1. Media is uploaded to the server
Media
Port
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Media
Client
3. Adaption is used
when needed
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Developed Service Concept - IMS
Control
Data
Application
Server
UE
UE
P-CSCF
S-CSCF
P-CSCF
MRF
UE
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Concept Principles
 The research in this thesis concentrated only on the
Control Part of the solution
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All signaling is based on SIP
Sender uploads the media to a server
Uploaded content is identified with a Media Stream URI
The possible receivers are notified about the content
The receivers may initiate a download sequence with
the Media Stream URI
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Signaling example - Upload
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Feasibility Study
 The possible components for an IMS testbed were
searched
 A combination of Fokus Open Source IMS Core and
Ericsson Service Development Studio was used
 Unfortunately no suitable MRF emulation was found
 A MRF emulation will be developed and added in the
future
 The control part of the model and its feasibility was
studied
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The Implementation
Client
IMS Core:
- S-CSCF
- I-CSCF
- P-CSCF
- HSS
Application
Server
WLAN
Own contribution:
bind for DNS
Configuration of the system,
Software development for the Client
and the Application Server, Service
Trigger for the HSS
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Conclusions
 For the implemented parts of the Ambient Networks
Media Delivery Concept, IMS as an implementation
base works
 The research has to be continued to be sure of the
whole concept
 The platform for the client and server solutions was not
found as flexible as needed
– Difficulties not related to IMS standards but internal
functions of the platform
 The case MRF
– No flexible emulations available
– The concept of MRF (control, capabilities) still evolves in
3GPP
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Future Work

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Step 1: Add the user plane
Step 2: Add the MRF
Step 3: Include more IMS domains
Step 4: Include other access types
 This thesis was the first step of a bigger project
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