FUTURE :

ASMS-TASK FORCE TOULOUSE, April, 9-10, 2002

Telespazio

FUTURE :Specification of the Multimedia

Subsystem Demonstrator

Authors: Arnoldo Giralda (project coordinator), Filomena Del Sorbo

http://www.ebanet.it/future.htm


Telespazio

Name Short name Country

•Telespazio (coordinator) TPZ I

•European Business Associates EBA I

•Space Engineering SE I

•University of Aquila UNIVAQ I

•University of Aachen AU D

•Siemens Austria SAGO A

•Ericsson Hellas EH GR

•Ascom ASC CH

•Integracion y Sistema de Medida ISM E

COMPOSITION OF THE TEAM


Telespazio

•FUTURE project aims at exploring applicability of native Internet Protocols in 3G (e.g. SIP and Web Techniques)

•FUTURE services leverage on capabilities of S-UMTS satellites (wide area coverage ,broadcasting/multicasting and location determination ).

•FUTURE has the VIRTUOUS project as starting point.

•FUTURE work-plan is organized in nine work packages .

FUTURE


Telespazio

HLR

Terminal

Test bed

T-

IWU

BSS

GPRSsegment

HLR

UMSHLR

Terminal

Test bed

T-

IWU

BSS

HLR

UMSHSS

LAN

S/T-URANTest Bed

TE

SIP ClientFTP ClientBrowser

TerminalTest Beds

MT/T-UMTS

MT/S-UMTS

MT

T-I

WU

BSS

3GSGSNGGSN

UMTSsegment

Iups

Gb

HLR

UMS

VIRTUOUS

CSCF(SIP Proxy)

ExecutionEnvironment

FeatureServer

ExecutionEnvironment

Web Server

ServiceLogic

File Server

PC

SIP-Client

FUTURE(IM subsystem)

Gi

FUTURE Demonstrator Architecture


TelespazioInterrelationship of Work Packages

WP500 Integration and test

WP100

Requirements for new functionally and reference model

WP200

Emulator adaptation

WP300

QoS in the Core

Network in the Access Network

WP400

IP basedMultimedia

Subsystem

WP600

Trials

WP

700

Dis

sem

inat

ion

, Sta

ndar

disa

tion

, Exp

olit

atio

n

WP

800

Ass

essm

ent

and e

valu

atio

n

WP

900

M

anag

emen

t an

d coor

dina

tion

WP500 Integration and test

WP100

Requirements for new functionally and reference model

WP200

Emulator adaptation

WP300

QoS in the Core

Network in the Access Network

WP400

IP basedMultimedia

Subsystem

WP600

Trials

WP

700

Dis

sem

inat

ion

, Sta

ndar

disa

tion

, Exp

olit

atio

n

WP

800

Ass

essm

ent

and e

valu

atio

n

WP

900

M

anag

emen

t an

d coor

dina

tion


Telespazio

The Work Package 400 aims at :• Defining an UMTS multimedia subsystem to offer real-

time multimedia services supported by SIP signalling• Obtaining the transparency of the IMS( IP Multimedia

Subsystem) on the used underlying transport mechanisms (satellite and terrestrial )

• Designing of multimedia services based on SIP (real-time and non-real-time) to show the inherent capabilities of S-UMTS satellites (wide area coverage, broadcasting/multicasting and location determination ) and to verify requirements on the IMS .

WP400


Telespazio

What is SIP ?

It is a new signalling protocol used to establish multimedia sessions over IP

Characteristics :• In each session SIP protocol manages

different kind of data flow (video ,audio)

• It is independent by transport protocol

• It is an open and scalable standard

• SIP protocol is multipurpose

• In 3G SIP manages the HSS (Home Subscriber Profile ) information. The HSS is a register that collects SIP User Profiles (e.g. LCS (LoCation Service)subscriptions ).

• A set of SIP users establishes SIP connection towards SIP servers.

Session Initiation Protocol :SIP (1/2)

1xx: Informational: request received, continuing to process the request;

2xx: Success: the action was successfully received, understood, and accepted;

3xx: Redirection: further action needs to be taken in order to complete the request;

4xx: Client Error: the request contains bad syntax or cannot be fulfilled at this server;

5xx: Server Error: the server failed to fulfil an apparently valid request;

6xx: Global Failure: the request cannot be fulfilled at any server.


TelespazioSession Initiation Protocol: SIP (1/2)

The SIP basically supports five facets of establishing and terminating multimedia communications:1. User location: determination of the end system to be used for communication;2. User capabilities: determination of the media and media parameters to be used (e.g. preconditions for QoS)3. User availability: determination of the willingness of the called party to engage in communications;4. Call set-up: "ringing", establishment of call parameters at both called and calling party;5. Call handling: including transfer and termination of calls.


Telespazio

SIP MS Architecture

- User Mobility Server

SIP advantages

- Interoperability among UMTS and Internet

- Mobility (SIP Proxy)

- Multicast calls support

-Service provisioning at application level (Execution Environment)

- Call State Control Function

- Feature ServerServing CSCF

Proxy CSCF

SIP Multimedia Subsystem


Telespazio

SIP signalling• Registration• User Location and Profile• Service Mobility• Session set-up• Changing existing sessions• Terminating sessions• Security and authentication• Coexistence with other call-setup and signalling protocols

SIP services• Point to point communication• Multimedia conference• Real/Non-real time services

SIP MS Requirements


TelespazioWP400 Results (D04.01 )

• End-user applications for FUTURE

– 3rd party call control (QoS interactive -> conversational)

– User initiated session modification (QoS conversational)

– Location based service (plain text)

– Context awareness of application service (QoS streaming)

– Presence service (status information - plain text)

• FUTURE Service logic based on SIP servlets

• Functional analysis in terms of message sequence charts


Telespazio

2/3G SGSN GGSN

Access Network

LAN

HTML page download

URL

HTML page

Web Server

HTTP request: 3rd party call Feature Logic

CSCF

Feature Logic

initiates call

SIP client

S/T-UMTS Emulator

voice

SIP client Web Browser

The application scenario “3rd Party Call Control” is a combination of the non-real time application "web browsing" and the real time multimedia application voice over IP (audio session) by using SIP as signalling protocol

3rd Party Call Control Service


Telespazio

2/3G SGSN GGSN

Access Network

LAN

HTML page download

URL

HTML page

Web Server

HTTP request: 3rd party call Feature Logic

CSCF

Feature Logic

initiates call

SIP client

S/T-UMTS Emulator

SIP client Web Browser

Audio Session

Video Session

The idea of this service is to first initiate the multimedia application voice over IP (audio session) between two participants as performed in the 3rd party call control application and then to demonstrate a change of the session characteristics (like the media type and/or the media codec) in an active session or to establish an additional

session (video session) to an already existing one (audio session).

User Initiated Session modification service


Telespazio

2/3G SGSN GGSN

Access Network

LAN

Feature Logic

CSCF

SIP client

Location Server

T-UMTS Emulator

Location information of the user

Traffic Information server / Advertising server Traffic / Advertising information

according to the current location of the user

The LBS produces information basing on the geographical information of an user .The position information are managed by the Location Server basing on the LCS profile contained in the HSS .

Location Based Service


TelespazioContext Awareness of Application Service

2/3G SGSN GGSN

Access Network

LAN

Feature Logic

CSCF

S/T-UMTS Emulator

Video connection

switch video streams depending on segment info.

Location Server

Media Server

Segment information of the user

In this scenario a connection to a media server, which provides video streams of different qualities of the same video (e.g. black & white, colour, different windows sizes), is established. The application is aware of the used segment (the mobile is attach to) and with this segment information the feature server is responsible to set up an appropriate connection between the mobile user and the media server providing video streams with different qualities (black/white, colour)


Telespazio

Presence Service

2/3G SGSN GGSN

Access Network

LAN

Feature Logic

CSCF

S/T-UMTS Emulator

User B wants to be informed about the registration status of subscriber C

Presence Server

User A wants to be informed about the registration status of subscriber C

subscribe

subscribe

register

Subscriber C

notification

notification

notification

The presence service provides access to presence status information of an end user to be made available to other users or services. Presence is an attribute related to, but quite different, from mobility information, and provides a service to be exploited by other services.


Telespazio

The Spot Satellite service consists on broadcast commercial Spot by satellite segment.

The evolution of the service is based on the following steps:

1) The Spot Satellite server (SSS) delivers a data stream based on a sequence of multimedia commercial spots.

2) At the same time the server establishes SIP connection with a set of Spot Satellite user service identified by SIP user profiles.

3) Consulting the HSS time by time and using geographical user position information (location server ), the SSS decides if an user can have access to a particular Spot content or not .

During the evolution of the user position the User Equipment receives a set of Spots in function of the user position information.

An Example of Location Based Service :Spot Satellite

FUTURE :

Documents

Transcript of FUTURE :