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1Presentation_ID
Spring VON 2001 Session 32 - 4G Wireless: Future of VoIP
4G: The End of the Intelligent
NetworkDana blair ([email protected])
678-352-2789
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Spring VON 2001 Session 32 - 4G Wireless: Future of VoIP 2000,
Cisco Systems, Inc.
Current mobile wirelessinfrastructure is the last outpost ofthe
Intelligent Network
Service delivery centered aroundSS7/IS-41/GSM MAP
intelligentnodes within the network
1G is POTS over the air 2G/2.5G/3G is ISDN over the air
Pre-4G Intelligent Network
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Spring VON 2001 Session 32 - 4G Wireless: Future of VoIP 2000,
Cisco Systems, Inc.
Every digital wireless phone is anISDN phone with handoff and
paging Voice service deployment with 3G is
equivalent to service deployment withISDN ISDN was unsuccessful
in deployment
of new voice services and integratedvoice/data. However, 3G has
cracked open the
door with SIP and IPv6 endorsement
Pre-4G Intelligent Network
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Spring VON 2001 Session 32 - 4G Wireless: Future of VoIP 2000,
Cisco Systems, Inc.
2G to 4G Voice Delivery
BTS
Mobile Switching Center
(MSC A)
Base Station
Controller2G
Circuit
Node BMSC Server
RNC3G R99
ATMATM
ISDN w/handoff
ISDN w/handoff
3G R00VoIP Node B
Call State Control FunctionSIP Call stateful Proxy
SGSNRNC
ATM IP Tunnel IP Tunnel
GGSN
In t e rne t
Node B4G VoIP
IPSIP Media Gateway
PSTN
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Spring VON 2001 Session 32 - 4G Wireless: Future of VoIP 2000,
Cisco Systems, Inc.
ISDN call model with SIP protocolinstead of Q.931 Replace
SS7/IS-41/GSM MAP
application development with SIP Voice call control performed
by
Intelligent Network nodes (CSCF, ) Similar to ISDN voice and
integrated
voice/data service deploymentmodel
3G View of SIP
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Spring VON 2001 Session 32 - 4G Wireless: Future of VoIP 2000,
Cisco Systems, Inc.
Need larger address space forbillions of mobile devices
Permanently assign an IPv6address to every mobile device
Global tromboning through
Intelligent Network nodes Mobility managed through IP
tunneling
3G View of IPv6
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2000, Cisco Systems, Inc.
2G to 4G Data
BTS
PSTN
Mobile Switching Center(MSC
A)
Base StationController
2G
Circuit
ISDN w/handoff
Node B4G
IP
Node B SGSN2.5G
GPRS RNC
ATM IP Tunnel IP Tunnel
GGSN
V.110 NAS
Node B SGSNRNC
ATM IP Tunnel IP Tunnel
GGSN3G
UMTS In t e rne t
3G data delivery is the same as 2.5G
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8/12Spring VON 2001 Session 32 - 4G Wireless: Future of VoIP
2000, Cisco Systems, Inc.
Multimode radio still needed Similar throughput, delay,
reliability, QoS advantage Same ISDN call model Voice and Data
continue to use
seperately signalled channels Very similar service delivery
model.
3G compared 2G/2.5G
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2000, Cisco Systems, Inc.
How much energy can besqueezed into a cubic meter of airwithout
damaging plants andanimals ?
Transmission rates are limited bythe output power of the
mobiledevice and human factors
4G: What About Bandwidth ?
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10/12Spring VON 2001 Session 32 - 4G Wireless: Future of VoIP
2000, Cisco Systems, Inc.
Battery technology improves Human factors do not change.
Why does a microwave oven shut offimmediately when the door is
open ?
Solution - decrease the distancefrom handset to receiver
withgreater base station density
4G: What About Bandwidth ?
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11/12Spring VON 2001 Session 32 - 4G Wireless: Future of VoIP
2000, Cisco Systems, Inc.
GSM/TDMA/EDGE/CDMA 2G/2.5Gradios
IP over 3G R99 ATM infrastructure SIP and IPv6 in the handset
Optimal internet routing and
handoff protocols Greater base station density
improves bandwidth
A View of 4G
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12/12Spring VON 2001 Session 32 - 4G Wireless: Future of VoIP
2000, Cisco Systems, Inc.
Seamless use of many radioprotocols both licensed andunlicensed
spectrum (802.11,bluetooth, cellular, )
Integration of voice and data over
the same transmission channel Integrated voice and data SIP-
enabled applications
A View of 4G
