Transcript Delivering Services to Residential Appliances by Utilizing Remote

Delivering Services to Residential
Appliances by Utilizing Remote
Resource Awareness
Andreas Häber, PhD Research Fellow
[email protected]
University of Agder, Norway
Agenda
 Scenario overview
 Remote service discovery & usage
 Design approaches
 Service delivery prototype
NGMAST 2008 - Andreas Häber, Martin Gerdes, Frank Reichert, Andreas Fasbender, Ram Kumar
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Media control & delivery example

Thightly coupled control and
media delivery

Workarounds:

Attach the device to an
external display.

Manually transfer the
media URI to a different
device.

Select
match to
watch
NGMAST 2008 - Andreas Häber, Martin Gerdes, Frank Reichert, Andreas Fasbender, Ram Kumar

Watch the
match here
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Which media to which appliances?
Control
Target devices
phone
Media sources
phone
homePC
Xbox
friends
TV
IP Radio
IP TV
other
devices
NGMAST 2008 - Andreas Häber, Martin Gerdes, Frank Reichert, Andreas Fasbender, Ram Kumar
more….
… and new
4
Which media to which appliances?
Target devices
Media sources
phone
phone
homePC
Xbox
Control
TV
friends
IP Radio
IP TV
other
devices
NGMAST 2008 - Andreas Häber, Martin Gerdes, Frank Reichert, Andreas Fasbender, Ram Kumar
more….
… and new
5
Solution proposal
NGMAST 2008 - Andreas Häber, Martin Gerdes, Frank Reichert, Andreas Fasbender, Ram Kumar
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Agenda
 Scenario overview & use cases
 Remote service discovery & usage
 Design approaches
 Service delivery prototype
NGMAST 2008 - Andreas Häber, Martin Gerdes, Frank Reichert, Andreas Fasbender, Ram Kumar
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Presence framework

Specified by the IETF SIMPLE Wg

Presentity = Presence entity

Presence User Agents publish
presence status for presentities to
the Presence service

Presence watchers subscribe to
PUAs’ identity for presence event

Presence event notifications
include presence information for
presentities

Presence service
Presence
User Agent
Scope of the
IETF presence
protocols
Example usage:
3GPP Presence Service (23.141)
Presence
watcher
Presentity
NGMAST 2008 - Andreas Häber, Martin Gerdes, Frank Reichert, Andreas Fasbender, Ram Kumar
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Service Presence for Remote Service Awareness

Commonly presentities happen
to be people

What about residential services?

Need to add service specific
information to the presence
notification data.

Reuse existing extensions

Presence service
Presence
User Agent
Presence
watcher
For example GEOPRIV to easily put
services on a map.
Scope of the
IETF presence
protocols
UPnP, Bonjour /
ZeroConfig,
Bluetooth, …
Presentity
NGMAST 2008 - Andreas Häber, Martin Gerdes, Frank Reichert, Andreas Fasbender, Ram Kumar
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Remote service usage sessions
Originating network
Service Discovery Gateway
IP Multimedia Subsystem
Terminating network
Proxy
Service Discovery Gateway
sip:[email protected] sip:[email protected] sip:[email protected]
1: INVITE [email protected]
2: 100 TRYING
3: INVITE [email protected]
4: 100 TRYING
5: 200 OK
6: 200 OK
7: ACK [email protected]
8. ACK [email protected]
SDP messages specify the residential service(s) to be involved;
one media descriptor for each service
- (External) IP address and port number to communicate with the service
NGMAST 2008 - Andreas Häber, Martin Gerdes, Frank Reichert, Andreas Fasbender, Ram Kumar
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Establishing a service invocation sesssion
Session Description offer
v=0
o=visited.sdg 3380446179 3380446179 IN IP4 192.168.168.31
s=c=IN IP4 192.168.168.31
Requested service – the UDN is discovered from
t=0 0
service presence (i.e., NOTIFY requests from SPS)
a=sendonly
m=application 9 TCP piranha
a=udn:uuid:9afb3231-345a-4cd1-b448-8866b79ff91b
a=setup:active


Basically its
external IP address
Session Description answer
v=0
o=home.sdg 3380446179 3380446179 IN IP4 192.168.168.32
s=Port number associated
c=IN IP4 192.168.168.32
with this session to use
t=0 0
the service
a=recvonly
m=application 9000 TCP piranha
a=udn:uuid:9afb3231-345a-4cd1-b448-8866b79ff91b
a=setup:passive
source: Ericsson-UiA ONE Project

NGMAST 2008 - Andreas Häber, Martin Gerdes, Frank Reichert, Andreas Fasbender, Ram Kumar
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Agenda
 Scenario overview & use cases
 Remote service discovery & usage
 Design approaches
 Service delivery prototype
NGMAST 2008 - Andreas Häber, Martin Gerdes, Frank Reichert, Andreas Fasbender, Ram Kumar
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Pre-selection of the target device
Step 1
The user selects the target
device in a control
application.
Step 2-3 In the service provider’s
web application the user
selects the desired content.
Step 4-5 The web application
establishes a session with
the tharget device, via the
Service Discovery Gateway.
Step 6
The service controls the
Digital Media Player.
NGMAST 2008 - Andreas Häber, Martin Gerdes, Frank Reichert, Andreas Fasbender, Ram Kumar
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Post-selection of the target device (1/2)
gateway alternative
Step 1-2 User opens start page of the
service and selects content.
Step 3
Service requests to
establish a session with the
user.
Step 4
Based on ad-hoc
mechanism user selects
DMP.
Step 5
Routes media to the DMP
and controls it.
NGMAST 2008 - Andreas Häber, Martin Gerdes, Frank Reichert, Andreas Fasbender, Ram Kumar
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Post-selection of the target device (2/2)
refer alternative
Step 1-3 Same as for the gateway
alternative.
Step 3.x
User refers the service to
an SDG (+ device
information).
This SDG should handle the
request by setting up
remote connectivity.
Step 4-5 Trickplay via web
application – service can
directly control the DMP.
Indirectly: Refer to SPS instead which
will proxy to the SDG.
NGMAST 2008 - Andreas Häber, Martin Gerdes, Frank Reichert, Andreas Fasbender, Ram Kumar
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Integrated selection of the target device
Step 1
User opens start page of the
service. User’s IMPU is used
to fetch available media
renderers from SPS
Step 2-3 Selection
Step 4
Trickplay
NGMAST 2008 - Andreas Häber, Martin Gerdes, Frank Reichert, Andreas Fasbender, Ram Kumar
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Comparison of the design approaches
Criteria
Session control terminal
involvement
Integration with existing
systems
Change content selection
without restarting the session
control
Transfer ongoing sessions
Hardware requirements
Pre-selection
Post-selection,
Gateway
Post-selection,
Refer
Integrated
selection
No
Yes
No
No
Middle
Easiest
Middle
Yes
No
Yes
Yes
No
No
Yes
Yes
Depends
High-end
Low-end
Low-end
NGMAST 2008 - Andreas Häber, Martin Gerdes, Frank Reichert, Andreas Fasbender, Ram Kumar
Most
difficult
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Agenda
 Scenario overview & use cases
 Remote service discovery & usage
 Design alternatives
 Service delivery prototype
NGMAST 2008 - Andreas Häber, Martin Gerdes, Frank Reichert, Andreas Fasbender, Ram Kumar
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Display Image Service – signaling flow
NGMAST 2008 - Andreas Häber, Martin Gerdes, Frank Reichert, Andreas Fasbender, Ram Kumar
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Future work
•
•
Privacy and Security
•
What is published about your residential environment?
•
User controlled topology hiding
•
Leverage inherent Presence framework capabilities
Scalability
•
Optimization of service presence information with regards to the number
and size of messages exchanged.
NGMAST 2008 - Andreas Häber, Martin Gerdes, Frank Reichert, Andreas Fasbender, Ram Kumar
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Questions?
NGMAST 2008 - Andreas Häber, Martin Gerdes, Frank Reichert, Andreas Fasbender, Ram Kumar
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EXTRA MATERIAL
NGMAST 2008 - Andreas Häber, Martin Gerdes, Frank Reichert, Andreas Fasbender, Ram Kumar
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Hi, I’m
Sven!
© 2006 - Developed by Ericsson & HiA
1
phone
2
homePC
1
phone
3
friends
2
Xbox
4
IP Radio
3
TV
5
IP TV
4
other
devices
6
more….
… and new
NGMAST 2008 - Andreas Häber, Martin Gerdes, Frank Reichert, Andreas Fasbender, Ram Kumar
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Updating a service invocation session
Originating network
Service Discovery Gateway
IP Multimedia Subsystem
Terminating network
Proxy
Service Discovery Gateway
sip:[email protected] sip:[email protected] sip:[email protected]
UPDATE [email protected]
Originating SDG
updates the session
(e.g. no longer
needs a device)
UPDATE [email protected]
200 OK
200 OK
UPDATE [email protected]
UPDATE [email protected]
200 OK
200 OK
Terminating SDG
updates the
session (e.g.
device got offline)
source: Ericsson-UiA ONE Project
NGMAST 2008 - Andreas Häber, Martin Gerdes, Frank Reichert, Andreas Fasbender, Ram Kumar
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Closing the service invocation session
Originating network
IP Multimedia Subsystem
Terminating network
Proxy
Service Discovery Gateway
Service Discovery Gateway
sip:[email protected] sip:[email protected] sip:[email protected]
BYE [email protected]
BYE [email protected]
200 OK
200 OK
source: Ericsson-UiA ONE Project
NGMAST 2008 - Andreas Häber, Martin Gerdes, Frank Reichert, Andreas Fasbender, Ram Kumar
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Display Image Service – signaling flow
NGMAST 2008 - Andreas Häber, Martin Gerdes, Frank Reichert, Andreas Fasbender, Ram Kumar
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