3rd Generation Mobile Services-Luis Galindo

8/7/2019 3rd Generation Mobile Services-Luis Galindo

1/25

TELEFONICA MOVILES ESPAA

3rd Generation Mobile Services:Introduction to IMS (IP

Multimedia Subsystem) andMBMS(Multimedia

Broadcast/Multicast Service)Luis Angel Galindo

martes, 21 de octubre de 2003


2/25

2Luis Angel Galindo

CONTENT

IMS

MBMS


3/25

3Luis Angel Galindo

The answer to life's problems aren't at thebottom of a bottle, they're on TV!

Homer Simpson


4/25

4Luis Angel Galindo

MBMS

IMS


5/25

5Luis Angel Galindo

RNC

UTRAN

SGSN

GGSNGnGn

PacketPacketSwitchedSwitchedDomainDomain

HSSIupsIups

GrGrGcGc

DD

IucsIucs

GiGi PDNIP networks/Internet

UMTS Release 5 and 6 architectureUMTS Release 5 and 6 architecture

PSTN/

Legacy/

PLMNData

EIRCC

Gf Gf

FFGsGs

MSCserver

MGW

McMc CircuitCircuit

SwitchedSwitchedDomainDomain

T-SGW

H.248

GMSCserver

MGW

McMcH.248

Data and Signalling Interface

Signalling InterfaceData Interface

NbNb

NcNc

Voice and Data over CS

MGCFCSCFMRF

GiGi

MrMr

CxCx IM-MGW

MgMgMcMc

T-SGW

GiGi

IMSIMS DomainDomain

GiGi

H.248

SIP

MmMm

ServicePlatforms

Voiceover IP

BICCSS7/IP

SIP


6/25

6Luis Angel Galindo

MGCF

MRF

GiGi

MrMrCxCx

IM-MGW

MgMg

McMc

GoGoGiGi

IP Multimedia/Internet

H.248

SIP

MmMm

IMS architectureIMS architecture

PSTN/

Legacy/PLMN

CSCF BGCF

BGCF

GGSN

HSS

MwMw

CSCF

MjMj

Mk Mk MiMi

SIP

SIPSIP

SIP

SIP

SIP

Diameter

P-CSCF

MwMw

COPS

Data and Signalling Interface

Signalling InterfaceData Interface

First contact point for the user within IMS Acts as a proxy Forward the SIP register message request received from

the UE to an I-CSCF Performs the authorisation of the use of bearer resources

and QoS management

Generation of CDRs

Is the contact point within an operators network for allconnections destined to a subscriber of thatnetwork operator or a roamer registered in the networkof that operator

Assigns a S-CSCF to a user during SIP registration Obtain from HSS the address of the S-CSCF Route a SIP request received from another networktowards the S-CSCF

Generation of CDRs Hides the network topology of an operator (THIG)

Performs the session control for the user. Maintains asession state for support of services

May behave as a register Interacts with service platforms for the support of services

Obtains the address of the I-CSCF for the networkoperator serving the destination subscriber

Generation of CDRs


7/25

7Luis Angel Galindo

Quality of Service negotiation

Session set-up

In an established session

IMS sessions will support several IP multimedia applicationsindependently of who implements them

Voice calls between IMS users and circuit switched usersmust be transparent for the user

Simplicity in the access to multimedia applications in real

time Use of SIP for signalling

IMS performs the multimedia flows synchronisation

Main characteristic of IMS (I)Main characteristic of IMS (I)


8/25

8Luis Angel Galindo

Voice and data integration in the packet switching domain

Use of SIP URL addresses([email protected])

Access to the pre-selected services by the user independently

of the network where the user is located

VHE

IMS provides authorisation, authentication, security and

privacy

IMS provides charging based in amount of data, in duration,in the service or a combination of them

Main characteristic of IMS (II)Main characteristic of IMS (II)


9/25

9Luis Angel Galindo

P-CSCF

SIP

I-CSCFI-CSCF

P-CSCF

S-CSCF

S-CSCF

HSS

4

SIP

7

9

1

Session set-upSIP (voice+ video) [email protected]

2

Which is the operator for ericsson.se?

All-IP client [email protected]

All-IP [email protected]

Performs the analysis of the destination, provides

the service

10

Session is establishedwith Giovanni

HSSWhat S-CSCF is serving

[email protected]?

3

5

Which is the operator for ericsson.it?

Where isGiovanni?

8

6

What S-CSCF is [email protected]?

Example of session setExample of session set --upup


10/25

10Luis Angel Galindo

IMS

MBMS


11/25


RANRAN

MBMS (MBMS ( Broadcast ModeBroadcast Mode ))

Music/MovieStreaming

MultimediaServices

IP Network/Internet

Life webcasting

TV/NewsSportAdvertising

BroadcastBroadcast DataDatastreamstream

Operator Operator SpecificSpecificServicesServices


12/25


IP Network/InternetRANRAN

MBMS (MBMS ( Multicast ModeMulticast Mode ))

Music/MovieStreaming

MultimediaServices

Life webcasting

TV/NewsSportAdvertising

Service SynchronisationService Synchronisation

MulticastMulticast DataDatastreamstream

UserUser --initiated activationinitiated activation

Operator Operator SpecificSpecificServicesServices


13/25


RNC

UTRAN

SGSN

GGSNGnGn

Packet SwitchedPacket SwitchedDomainDomain

HLR IuIu

GrGr

UTRANUTRAN

BGGiGiGiGi

PDN/Internet

BMSC

GiGi

Broadcast/ MulticastBroadcast/ MulticastSourceSource

GiGi

GiGi

Content ProviderContent Provider

GmbGmb

CBCCBC

CSECSE

Broadcast/ MulticastBroadcast/ MulticastSourceSource

Content ProviderContent Provider

OSAOSASCSSCS

Architecture andArchitecture and interfacesinterfaces


14/25


CharacteristicsCharacteristics of of MBMS (I)MBMS (I)

Uses the UMTS packet switching core IP is mandatory

Point-to-multipoint transmissionBoth unicast and multicast sources are supported

Use of IPv6 is advisable

Multicast mode shall be interoperable with IETF IP MulticastQoS

Configurable for individual services Streaming and background classes


15/25


Data types Text, audio, picture, video

Handovers and roaming are supportedAdaptation of data transmission to different RAN capabilitiesor radio resources availableUser can receive simultaneously more than one MBMS service

CharacteristicsCharacteristics of of MBMS (II)MBMS (II)


16/25


Operation ModesOperation Modes (I)(I)

Broadcast Transmission of multimedia data to all users in a broadcast

service area

User subscription to this mode is not required But in order to receive the multimedia data , user must have

enabled the specific broadcast service locally on theirmobile terminal

In this mode, charging data will not be generated, thus thereception of the traffic is not guaranteed.


17/25


Operation ModesOperation Modes (II)(II)

Multicast Transmission of multimedia data to a multicast group in a

multicast service area. It is possible to transmit selectively

within the multicast service area.

User subscription to the multicast subscription groups isrequired. This can be made by the operator, the user or athird party.

One user can be joined to several multicast groups at thesame time


18/25


Multicast Service ProvisionMulticast Service Provision

Subscription

Service announcement

Joining

Session start

MBMS notification

Data transfer

Session stopLeaving

Agreement betweenuser and operator

User is informed about the rangeof MBMS services available

(CBS, URL, Push)

User: Id like to be a member.

Id like to receive data

Start of a multicast session(network resources established)

Network: Multicast data transferis ready

Network resources are released

User: I no longer want to receivedata of this service


19/25


Broadcast Service ProvisionBroadcast Service Provision

Service announcement

Session start

MBMS notification

Data transfer

Session stop

User is informed about the rangeof MBMS services available

(CBS, URL, Push)

Start of a multicast session

(network resources established)

Network: Broadcast data transferis ready

Network resources are released


20/25


BroadcastBroadcast //multicast service areamulticast service area

Individual service area Radio cell

Service local area Zone where the service content is the same

Broadcast/multicast service area service local areas

One per serviceIts able to deliver different contents of the same service

Depending on the user location (e.g. Regional traffic news)

Configurable by third parties By connecting to BMSC


21/25


SGSN 1

GGSN

GPRSGPRS backbonebackbone

IP

MulticastMulticastSourceSource

GTP Tunnel

SGSN 2GTP Tunnel

GTPTID=pt to multipoint GPRS

IP PacketDestination=IP target multicastIP PacketDestination=IP target multicastEncapsulateduser data

IP PacketDestination=SGSN address

GPRS transportprotocols

IPIP unicast on the Gn interfaceunicast on the Gn interface Routers deliver multicast packetsto all interfaces

registered toreceive them

Copies multicastpackets in GTP tunnels

to all SGSNswith user registered

Specific tunnelsfor multicast traffic


22/25


GGSN

SGSN 1

GPRSGPRS backbonebackbone

IP

MulticastMulticastSourceSource

SGSN 2

IP PacketDestination=IP target multicast

IP PacketDest= Gn multicast address

GPRS transportprotocols

GTPTID=pt to multipoint GPRS

IP Packet

Destination=IP target multicast

Encapsulated

user data

IPIP multicast on the Gn interfacemulticast on the Gn interfaceRouters deliver

multicast packetsto all interfaces

registered toreceive them

Transmit multicastpacket on to a

single GTP tunnelfor that target

multicast addressDelivers multicast

packets to allinterfaces registered


23/25


TSs of referenceTSs of reference

The access to all the information about these TecnnicalSpecifications is free in the web page www.3gpp.org

MBMS: TS 22.146 Multimedia Broadcast/Multicast Service

TS 23.246 Architecture and functional description


24/25


If the world should blow itself up, the

last audible voice would be that of anexpert saying it can't be done

Peter Ustinov


25/25

Documents

3rd Generation Mobile Services-Luis Galindo