new opportunities in wireless network evolution · pdf file9/16/2008 · wireless...
TRANSCRIPT
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New Opportunities in Wireless
Network Evolution
©James Ni
09.16.2008
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Wireless Network Evolution
� Access
� High speed
� Muliti-services
� Core network
� All IP infrastructure
� IMS core to replace existing mobile service core
� Large variety of services
� MMS, Video Chat, Mobile TV, Digital Video Broadcasting
(DVB), Voice, Data, Streaming services
� Ultimate goal
� Single device, anytime, anywhere and anything
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Wireless Network Evolution
� An ambitious target
� Lead and dominate next generation network
(NGN)
� Starting from Fix mobile convergence (FMC)
� Home/personal base station (Femto) – the cut in
point
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Wireless Network Evolution
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The Reality
� Existing network infrastructure
� Large investment
� Lots of reusable functional entities
� Mature service platforms
� Existing subscribers
� Long ramp up curve to adopt new services
� Satisfied with the current services
� Existing access terminals
� For a certain long period of time
� Existing and new network infrastructures will co-exist
� Services provided in existing network infrastructure need to be accessible to new comers
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The Needs
� Convergence functions that can bridge the new
and existing network infrastructures
� Not a simple adaptor
� Long term value in new network infrastructure
� Unique and essential functionalities
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Mobile Network Status -- CDMA
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Mobile Network Status -- GSM
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Common Future: All IP Core
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IMS Core: The Service Control Plane
� While migrating to AIP core …
� IP Subsystem (IMS) core serves all signaling and service control purposes
� Call/session signaling
� Mobility management
� Registration/Location services
� AAA services
� Multi-media service delivery
� Media path control
� Interworking
� Breakout control
� Service feature control
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IMS Core: Key ComponentsOtherIP Networks
IP Transport (Access and Core)
T-MGF
I-BGF
AS HSS
IBCF
A-BGF
P-CSCF
S-CSCF
BGCF
I-CSCF
SLF
Charging
Functions
IWF
UE
« Core IMS »
Mw
Mw Mw/Mk/Mm
Mr
Mg
Mj
Mi
Mp MnGm
Gq
ISC Cx
Dx
Dh
Sh
Ic
Rf/Ro
Rf/RoCx
Ib
Ia
Id
PSTN/IS
DN
SGFMRFC MGCF
MRFP
Resource and Admission Control Subsystem
Network
Attachement
Sub-system
If
Ie
Mi
Mw
OtherIP Networks
IP Transport (Access and Core)
T-MGF
I-BGF
AS HSS
IBCF
A-BGF
P-CSCF
S-CSCF
BGCF
I-CSCF
SLF
Charge
Fonctions
IWF
UE
« Core IMS »
Mw
Mw Mw/Mk/Mm
Mr
Mg
Mj
Mi
Mp MnGm
Gq
ISC Cx
Dx
Dh
Sh
Ic
Rf/Ro
Rf/RoCx
Ib
Ia
Id
PSTN/IS
DN
SGFMRFC MGCF
MRFP
Resource and Admission Control Sub-system
Network
If
Ie
Mi
Mw
SIP
DIAMETER
H.248
ISUP/SCTP
OtherIP Networks
IP Transport (Access and Core)
T-MGF
I-BGF
AS HSS
IBCF
A-BGF
P-CSCF
S-CSCF
BGCF
I-CSCF
SLF
Charging
Functions
IWF
UE
« Core IMS »
Mw
Mw Mw/Mk/Mm
Mr
Mg
Mj
Mi
Mp MnGm
Gq
ISC Cx
Dx
Dh
Sh
Ic
Rf/Ro
Rf/RoCx
Ib
Ia
Id
PSTN/IS
DN
SGFMRFC MGCF
MRFP
Resource and Admission Control Subsystem
Network
Attachement
Sub-system
If
Ie
Mi
Mw
OtherIP Networks
IP Transport (Access and Core)
T-MGF
I-BGF
AS HSS
IBCF
A-BGF
P-CSCF
S-CSCF
BGCF
I-CSCF
SLF
Charge
Fonctions
IWF
UE
« Core IMS »
Mw
Mw Mw/Mk/Mm
Mr
Mg
Mj
Mi
Mp MnGm
Gq
ISC Cx
Dx
Dh
Sh
Ic
Rf/Ro
Rf/RoCx
Ib
Ia
Id
PSTN/IS
DN
SGFMRFC MGCF
MRFP
Resource and Admission Control Sub-system
Network
If
Ie
Mi
Mw
SIP
DIAMETER
H.248
ISUP/SCTP
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IMS Core: Major Protocols
� SIP Signaling
� H.248 Media Control
� DIAMETER: AAA, Service/Location management
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Existing Reusable Network Elements
� Database elements
� HLR/VLR � HSS
� EIR
� Subscriber Profile
� Network Policy Rules
� MSC
� Backward compatibility
� Handin/handout control
� Protocols
� MAP / ANSI.41
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A New Element: Convergence Server
� Bridging IMS core and traditional mobile core
� Signaling interworking SIP �� MAP / ANSI.41
� Service interworking: call/session, SMS etc.
� Mobility interworking: IMS and mobile cores
� Mobility management in IMS core
� Location management in IMS core
� Feature service enabling in IMS core
� Access control in IMS core (AAA)
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Position of Convergence Server
PDG
HSS
/Presence
Wx
IMS Core
X-CSCF MGCF MGW
Mn
IP Packet Core Network
Sh
Wm / RADIUS
AAA Server
IP PS Data Network
PDG – Packet Data Gateway
�Wu – IPSec Tunnel (AP to PDG)
�Wm – RADIUS/Diameter AAA (PDG to AAA)
�AAA Server
�Wx Diameter (AAA to HSS)
�Convergence Server
�Sh – Diameter (Conv Svr to HSS)
�ISC – SIP interface (Conv Svr to S-CSCF)
HLR – Home Location Registry:
�SS7 GSM MAP/D (VLR to HLR)
SMSC – Short Message Service IW/Gateway MSC
�SS7 MAP/Gd interface (SGSN to SMSC)
�SS7 MAP/E interface (MSC to SMSC)
MSS – Media Switching Centers
�SS7 GSM MAP/E (MSC to MSC handover)
Mobile Core
Network
(SS7)
HLR MSSSMSC
ISUPv3
M3UAG.703
VoiceMAP-E
GdMAP-D MAP-E
Wu’Cx
Mg
ISC
SIP
RTP
Gi / Gn
Convergence Server
AN
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An Immediate Application: Femto Access
control
� Femto cell
� Home/personal base station
� Same handset air interface
� Backhaul wireless traffic via home broadband (cable/DSL)
� Targeted issues
� Coverage
� Air link congestion
� Benefit to subscriber
� Low rate plan
� Multi-media service to home
� Single device for everything
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Femto Architectural Approaches
� 3GPP2
� SIP/IMS base solution
� Future facing solution
� 3GPP
� Existing protocols over IP Sec tunnel
� Leverage existing investment
� Will move to IMS core based solution eventually
� Temporary solution for IMS: Iu/SIP adapter
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3GPP2 Identified Convergence Server
Element (1xRTT)
PDE – Position Determining Entity
MPC – Mobile Positioning Center
PSAP – Public Safety Answering Point
CSRV
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3GPP2 Identified Convergence Server
Element (HRPD 1x Packet)
Ty
Ty
IP
FGW
AAA
(Axx)
Femto-AAA
MS/AT1xRTT/
HRPD
A11
Internet
MIP
(P)MIP
AAA
(A12)
AN-AAA
AAA
HA/LMA
PDSN
For A12 Device
Authentication
For Femto
Device
Authentication
AAA
For PDS
Authentication
HRPD
AN
FAP
FA/
MAG
A13
A16
-19
SeGW
IP
A10
BS/AN
PCRF
PDST IMS
Mobile
Core
CSRV
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Convergence Server: Major Functions
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Convergence Server: Major functions
� Acting as a VLR, performs SIP subscriber registration and location tracking
� Supports IMS-MSC call interworking
� Supports IMS-MSC messaging interworking
� Performs IMS supplementary service control and interworking with mobile core
� Provides SLF function in IMS core
� Anchors IMS calls for handoff support
� Performs IMS – MSC roaming services
� Provides IMS subscriber AAA functions
� Supports OSA, WIN, CAMEL etc. service building logics
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Convergence Server: Potential expansions
� Supports full CSCF functions
� Support SS7 signaling gateway functions
� Supporting MEGACO functions and acting as
eMSC
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Convergence Server: HW Architecture
� No customized hardware needs
� Pure software solutions, works on
� standard ATCA chassis and general server
modules
� Standard Blade Server system and server modules
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Convergence Server: SW Architecture
Platform/Device Specific
Linux Kernel
Ethernet
Drivers
T1/E1
Drivers
Platform
Interface
Debian Packages
Platform
Monitors
Process Manager Memory Mgmt
Network Interface File SystemHA Firewall
SSL NTP
FTP
SSH
Telnet
Debian
Linux
Operating
System
CLISNMP M
aster A
gent
Web
Service
EmbeddedWeb Mgmt. Application
Management
Apache Tomcat 5.0.28
SNMP AdventnetLib.
SNMP Gateway Lib.
SOAP 1.1/1.2 via Apache Axis 1.3
EPIC
Adaptation
CLI Session
Web
SOAP Clients
SOAP Clients
CLI Sessions
Chassis O
pera
tion Syste
m (C
OS)
Diameter
ASC
RTP
SS7
DNSResolver
CDR
Trap Alarm
Event Log
CFC
Applications
Control PlaneService Plane
System Service
ICC/Socket
SNMP Sub-agent
Data Plane
Chassis Operation System (COS)
GCC
CAC
SMC
VLRC
SSPC
SSC
SIP AS
Shelf Manager (SHM)
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Convergence Server: SW Architecture
SNMP
CLI
Web Server
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Convergence Server: Service Plane
� OS Adaptation Layer (OSA)
� Shelf Manager (SHM)
� Chassis Operation System (COS)
� Inter Component Communications (ICC)
� Event Log Service (EVS)
� Trap and Alarm Management (TAM)
� Configuration File Control (CFC)
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Convergence Server: Control Plane
SIP AS
Registrar
Message ControlCall Control
SIP B2BUA
SSPCVLRC
SSC
ASC
GCC SMC
Service management
Active Subscribers
Active Calls
Messages
CDR
CDR management
Rf/Ro Interface
CAC
Load Balancing Control
Congestion Control
Resource Management
Call Admission Control
WIN/CAMEL Service Control
SS7 (MAP/ANSI.41)
Protocol
MAP
Transportation
MTP3
MTP2
Adax Driver
Service Delivery
TCAP
SCCP
Application
VLR
Application
HLR
Protocol
ANSI41
Transportation
M3UA
SCTP
IP
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Convergence Server: Control Plane
� Signaling Stack Control (SSC)� SIP SSC, SS7 SSC
� Access Signaling Control (ASC)� ASCi & ASCe
� General Call Control (GCC)
� Call Admission Control (CAC)
� Short Message Control (SMC)
� Visitor Location Registrar Control (VLRC)
� Subscriber Service proxy Control (SSPC)
� Call Detail Record (CDR)
� Domain Name Control (DNC)
� Other Misc. Component (e.g. Service management)
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Convergence Server: Management Plane
� MIB/SNMP
� CLI
� SOAP
� Web
� Generic Management Framework (GMF)
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Backup Slides
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Mobile Network Status -- CDMA
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IMS Core
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Convergence Server: Call Control
CAC
GCC
ASCeASCi
SSCi SSCe
WIN/CAMEL
Supplementary Service
Call admission
Network 1 (e.g. Femto
Cell / Gateway)
Network 2
(e.g. xCSCF/MGCF)
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Convergence Server: COS
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Convergence Server: ICC
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Convergence Server: Inter Component
Interfaces
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Convergence Server: Call Setup
Network 1 Network 2ASCI ASCE
GCC
CAC
External Call
Control
Intelligence
1. NET_SETUP(SIP:INVITE)
4. CONN_IND
5. REG_CMD
7. REG_RPY
6. External Call
Control
Query & Reply
10. C
ONN_REQ
13. NET_SETUP (SIP:INVITE)
4a. NET_PROC(SIP:100)13a. NET_PROC(SIP:100)14. NET_ALERT(SIP:180)
15. U
UI_UIND
(ALERT)
16. UUI_UREQ
(ALERT)
18. NET_CONN(SIP:200)
19. C
ONN_CNF
20a.CONN_RSP
17. NET_ALERT(SIP:180)
21. NET_CONN(SIP:200)22. NET_CONN_ACK
(SIP:ACK)
SSC SSC
25. NET_INFO
(SIP:INFO/MESSAGE)
26. UUI_UIND
(SIP:INFO/MSG) 2
7. U
UI_UREQ
(SIP:IN
FO/MSG)
28. NET_INFO
(SIP:INFO/MESSAGE)
RSCs
RSCs
RSCs
Resource
pool
RSCs
RSCs
RSCs
2. RSC_ALLOC_CMD
3. RSC_ALLOC_RPY
8.
RSC_ALLOC_CMD 9
. RSC_ALLOC
_RPY
11. RSC_ALLOC_CMD
12. RSC_ALLOC_RPY
23.CUTH_UIND
20. RSC_ACTV
_CMD
21a. R
SC_ACTV
_RPY
24. C
UTH_UREQ
19a. NET_CONN_ACK(SIP:ACK)
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Convergence Server: Call Teardown
2. DISC_IND
3. DEREG_CMD
5. DEREG_RPY
8. D
ISC_REQ
13. D
ISC_CNF
14.DISC_RSP
15. RSC_ALLOC_CMD
16. RSC_ALLOC_RPY
6. RSC_DEACTV
_CMD
7. R
SC_DEACTV
_RPY
9. RSC_DEALLOC_CMD
10. RSC_DEALLOC_RPY
8a. RSC_DEALLOC
_CMD
9a. R
SC_DEALLOC
_RPY
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Convergence Server: Registration
MS / FEMTO HLR / AC
CSRV
SSC VLRC SS7
SIP:REGISTER
SIP:REGISTER
SIP:200OK
(REGISTER)
SIP:200OK
(REGISTER) SIP:MESSAGE
(location update request)SIP:MESSAGE
(loc update request)
AUTHREQ
AUTHREQ
authreq
authreq
REGNOT
REGNOT
regnot
regnot
SIP:MESSAGE
(location update
response)SIP:MESSAGE
(location update response)
SIP:200OK(MESSAGE)
SIP:200OK
(MESSAGE)
R
e
g
i
s
t
r
a
t
i
o
n
p
r
o
c
e
d
u
r
e
D
e
r
e
g
i
s
t
r
a
t
i
o
n
SIP:REGISTER
(expire=0)
SIP:REGISTER
(expire=0)
SIP:200OK
(REGISTER)
SIP:200OK
(REGISTER)
P/I/S-CSCF
SIP:REGISTER
(3rd party)
SIP:200OK
REGISTER(3rd party)
SIP:200OK
(MESSAGE)SIP:200OK
(MESSAGE)
SIP:REGISTER
(3rd party expire=0)
SIP:200OK(3rd party
REGISTER)
CAC
Registration
request
Registration
response
![Page 40: New Opportunities in Wireless Network Evolution · PDF file9/16/2008 · Wireless Network Evolution Access High speed ... Mobile Network Status --CDMA. Mobile Network Status --GSM](https://reader031.vdocuments.mx/reader031/viewer/2022021817/5aa01c867f8b9a62178da466/html5/thumbnails/40.jpg)
Convergence Server: Call Originating
MS / FEMTO HLR / AC
CSRV
SSC VLRC SS7ASC GCC CAC
SIP:MESSAGE
(CM_SERVICE_
REQ)SIP:MESSAGE
(SERV_REQ) Authentication
requestAUTHREQ
AUTHREQ
authreq
authreqAuthentication
confirm
MGC
MGW
SIP:MESSAGE
GBL_CHALLENGE_RSPSIP:MESSAGE
GBL_CHALLENGE_
RSP
SIP:200OK
(MESSAGE)
SIP:INVITE
SIP:INVITE
SIP:INVITE
Connection
Indication (IG) Call
Admission req.
Call
Admission cnf.
Connection
Request (EG)
SIP:INVITE
SIP:100 Trying
SIP:100
SIP:100
SIP:180 Ringing
SIP:180
SIP:200 OK
SIP:200Connection
confirm (EG)
Connection
response (IG)SIP:200
SIP:180
SIP:180
SIP:200 OK
(IG) Resource request (optional)
(IG) Resource confirm (optional)
SIP:100
Resource
Request
(optional)Resource
confirm
(optional)
(EG) Resource request (optional)
(EG) Resource confirm (optional)
Resource
Binding req
(optional)Resource
Binding cnf.
(optional)
Supplementary
service control can
be invoked here
Successful SIP Registration
![Page 41: New Opportunities in Wireless Network Evolution · PDF file9/16/2008 · Wireless Network Evolution Access High speed ... Mobile Network Status --CDMA. Mobile Network Status --GSM](https://reader031.vdocuments.mx/reader031/viewer/2022021817/5aa01c867f8b9a62178da466/html5/thumbnails/41.jpg)
Convergence Server: Call Terminating
![Page 42: New Opportunities in Wireless Network Evolution · PDF file9/16/2008 · Wireless Network Evolution Access High speed ... Mobile Network Status --CDMA. Mobile Network Status --GSM](https://reader031.vdocuments.mx/reader031/viewer/2022021817/5aa01c867f8b9a62178da466/html5/thumbnails/42.jpg)
Convergence Server: SMS Originating
![Page 43: New Opportunities in Wireless Network Evolution · PDF file9/16/2008 · Wireless Network Evolution Access High speed ... Mobile Network Status --CDMA. Mobile Network Status --GSM](https://reader031.vdocuments.mx/reader031/viewer/2022021817/5aa01c867f8b9a62178da466/html5/thumbnails/43.jpg)
Convergence Server: SMS Terminating