media gateway 1 mika ahola 22.11.99 media gateway mika ahola [email protected] mobile switching...
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Media Gateway 1 Mika Ahola 22.11.99
Media Gateway
Mika Ahola
Mobile Switching Systems Unit, L M Ericsson in Finland
Media Gateway 2 Mika Ahola 22.11.99
Outline
BackgroundNew network architectureMedia gatewayStandardizationSummary
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BackgroundBackground
The New Telecoms World
- a global marketplace- a challenge, a possibility
Competition
Price pressure
Fixed <> Mobile Technologies
Liberalization
Globalcustomers
IP & Internet
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Wireless Internet Services
News, weather, sports
Traffic information
Directory services
Time tables
Location-dependant information services, like “find a nearby restaurant”
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GSM/UMTS Network (Phase 1)
GSM/UMTS UMTS GSM
Access to people and information
Narrow band
Wide band
UMTSradio
access
GSM radio
access
Internet/intranetPSTN/ISDN
GSM/UMTS core
network
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USIM
USIM
SIM
BTSBTSBTSBTSBTS
BTSBTSBTSBTSBTS
BTSBTSBTSBTSBTS
UMTS/GSM Reference Model
User equipment GSM BSS Core networkExternalnetwork
Cu Uu
Um
Iu
A
Iu
Gb
Iur
Abis
Iub
ME
ME
MT
SCPSMS-GMSC
RNC
RNC
BSC
UTRAN
SIM MT BTS BSC
MSC
EIR
GGSN
GMSC
SGSNAUCHLR
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UMTS Standardization
GSM BTS
UMTS BTS
GSMBSC
Core network
GSM based evolution to
UMTS
-circuit switched evolution
-packet switched (GPRS)
evolution
Revolution Evolution
UMTSRNC
Abis A
IuIub
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Migration Roadmap
1998 1999 2000 2001
GSM
EDGE
UTRANWCDMA
Radio network
Core network
MSC
HSCSD
GGSN+SGSN
GPRS Packet switched
Circuit switched
Bandw
idth
Bandw
idth
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Service ProductionFunctionality
Time
SIM toolkit
WAPApplications
Infrastructure
Service enabling technology
IT based services
IN
?Value AddedServices
VOICE MAIL GSN
BSS
SERVER
MSC
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TodaySingle-service networks
Next-generation Network StructureNext-generation Network Structure
Dat
a/IP
Net
wor
ks
Dat
a/IP
Net
wor
ks
Cel
lula
r/P
LM
NC
ellu
lar/
PL
MN
PS
TN
/IS
DN
PS
TN
/IS
DN
CA
TV
CA
TV
Services
Access Transport & Switching Networks
Servers
Backbone Network
WirelineAccess
WirelessAccess
FutureMulti-service networks/client-server
Communcationapplications Control
Content Content
CableAccess
Clients/Applications
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UTRAN
Ericsson Network Architecture
Wireless AN UTRANWireline AN
MGW
Connectivity backbone(STM, ATM, IP, …)
Media Gateway, handling User Plane
MSCServer
GSNServer
SCP
ResourceNode
Connectivity
Control
Application
HLR
Appl Servers
MGWInternetIntranets
MGWPSTN/ISDN/
PLMN
Server, handling Control Plane & Applications
SCS
MGW
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Features of New Architecture:Separation of call control and connectivity/bearer controlFlexible architecture that is possible to use for any connectivity (ATM, IP, STM)Keep the N-ISDN/GSM service paradigm. Use MAP, ISUP, etc.All devices needed for user plane manipulation are moved to the Media Gateway
(echo cancellers, codecs, etc.)Possible to place infrequently used equipment in centralized resource nodesTransmission efficient to have coded speech all the way to the rim of the PLMNUTRAN and the Iu interface is ATM based. A good way to bring in ATM in the core
network is neededAllows stable and mature introduction of UMTS networks since building on GSM
productsNew protocol to control media gateway remotelyServices/applications outside core network enables service convergence In line with standardization trends
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MGW
MGW MGW
MGW
Backbone Network
ATMATM ATMATM ATMATMATMATM
ATMATM
ATMATM
ATMATM
ATMATM
AXDAXI 540
AXI 520
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Services/Applications Outside Core Network
Application 2
Service Capability Servers
PLMNGen 2 UMTS
PLMNGen 3
PSTN/ISDN
OthermembersIMT-2000
Family
Open I/F
Application 1 Application n
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UMTS Standardization Bodies for New Architecture
ControlHLR
GMSC/TransitServer
MSCServer
UTRAN
Connectivity Backbone NWATM, IP...
BTS RNC MediaGW
Media GW
PSTN/ISDN PLMN Internet/ Intranet
N-ISUP
GCP
MAP
RANAP
BICC
MEGACO
ITU-TSG11
Sigtran
SS7 over IPArchitecture
ITU-TSG16
3GPP R00
GCP
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Reference Architecture for an All IP Network
GfGi
Iu-ps'
Iu
GiMr
Gi
Ms
Gi
R UuMGW
Gn
Gc
Gp
Signalling and Data Transfer Interface
Signalling Interface
TE MT UTRAN
GrOther PLMN
SGSN
GGSN
GGSN
EIR
SGSN
Gn
MGCF
R-SGW
MRF
MultimediaIP Networks
PSTN/Legacy/External
Applications &Services *)
Mm
Mw
Legacy mobilesignalingNetwork
Mc
Cx
R Um
TE MT ERAN
AlternativeAccess
Network
Mh
CSCF
CSCF
Mg
T-SGW *)
T-SGW *)
HSS *)
HSS *)
Applications& Services *)
MSC server GMSC server
Iu1 = Iucs (RTP, AAL2)
Iu2 = Iu(RANAP)
*) those elements are duplicated for figurelayout purpose only, they belong to the samelogical element in the reference model
McMc
MAP
MAP
SCP
CAP
MGWNb
Nc
Iu1
Iu2
R-SGW *)
Mh
Source:
3GPP TR 23.922 V1.0.0 (1999-10)
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Summary
Ericsson offers via the layered architecture an evolutionary approach to the multi-service network
Ericsson offers deployment of ATM & IP-based transport technologies for both UMTS and GSM/GPRS based on open standards.
A Media Gateway product is introduced handling all user plane data in an integrated way and that connects to ATM & IP backbones
New network architecture will be included in release 00 of 3GPP