Transcript Cisco Presentation Guide

4G: The End of the Intelligent
Network
Dana blair ([email protected])
678-352-2789
Presentation_ID
Spring VON 2001
Session 32 - 4G Wireless: Future of VoIP
1
Pre-4G Intelligent Network
• Current mobile wireless
infrastructure is the last outpost of
the Intelligent Network
• Service delivery centered around
SS7/IS-41/GSM MAP intelligent
nodes within the network
• 1G is POTS over the air
• 2G/2.5G/3G is ISDN over the air
Spring VON 2001
Session 32 - 4G Wireless: Future of VoIP
© 2000, Cisco Systems, Inc.
Pre-4G Intelligent Network
• Every digital wireless phone is an
ISDN phone with handoff and paging
• Voice service deployment with 3G is
equivalent to service deployment with
ISDN
• ISDN was unsuccessful in deployment
of new voice services and integrated
voice/data.
• However, 3G has cracked open the
door with SIP and IPv6 endorsement
Spring VON 2001
Session 32 - 4G Wireless: Future of VoIP
© 2000, Cisco Systems, Inc.
2G to 4G Voice Delivery
2G
Base Station
Mobile Switching Center
Controller
(MSCA)
ISDN w/
handoff
BTS
Circuit
3G R’99
RNC
Node B
ATM
3G R’00
VoIP
MSC Server
ISDN w/
handoff
ATM
RNC
Node B
ATM
4G VoIP
PSTN
SGSN
IP Tunnel
GGSN
IP Tunnel
Call State Control Function
SIP Call stateful Proxy
Node B
IP
Internet
SIP Media Gateway
Spring VON 2001
Session 32 - 4G Wireless: Future of VoIP
© 2000, Cisco Systems, Inc.
3G View of SIP
• ISDN call model with SIP protocol
instead 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 deployment
model
Spring VON 2001
Session 32 - 4G Wireless: Future of VoIP
© 2000, Cisco Systems, Inc.
3G View of IPv6
• Need larger address space for
billions of mobile devices
• Permanently assign an IPv6
address to every mobile device
• Global tromboning through
Intelligent Network nodes
• Mobility managed through IP
tunneling
Spring VON 2001
Session 32 - 4G Wireless: Future of VoIP
© 2000, Cisco Systems, Inc.
2G to 4G Data
2G
Base Station
Mobile Switching Center
Controller
(MSCA)
ISDN w/
handoff
BTS
Circuit
2.5G
GPRS
RNC
Node B
ATM
3G
UMTS
RNC
Node B
GGSN
SGSN
IP Tunnel
PSTN
IP Tunnel
IP Tunnel
ATM
4G
SGSN
V.110 NAS
GGSN
Internet
IP Tunnel
Node B
IP
3G data delivery is the same as 2.5G
Spring VON 2001
Session 32 - 4G Wireless: Future of VoIP
© 2000, Cisco Systems, Inc.
3G compared 2G/2.5G
• 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.
Spring VON 2001
Session 32 - 4G Wireless: Future of VoIP
© 2000, Cisco Systems, Inc.
4G: What About Bandwidth ?
• How much energy can be
squeezed into a cubic meter of air
without damaging plants and
animals ?
• Transmission rates are limited by
the output power of the mobile
device and human factors
Spring VON 2001
Session 32 - 4G Wireless: Future of VoIP
© 2000, Cisco Systems, Inc.
4G: What About Bandwidth ?
• Battery technology improves
• Human factors do not change.
Why does a microwave oven shut off
immediately when the door is open ?
• Solution - decrease the distance
from handset to receiver with
greater base station density
Spring VON 2001
Session 32 - 4G Wireless: Future of VoIP
© 2000, Cisco Systems, Inc.
A View of 4G
• GSM/TDMA/EDGE/CDMA 2G/2.5G
radios
• IP over 3G R’99 ATM infrastructure
• SIP and IPv6 in the handset
• Optimal internet routing and
handoff protocols
• Greater base station density
improves bandwidth
Spring VON 2001
Session 32 - 4G Wireless: Future of VoIP
© 2000, Cisco Systems, Inc.
A View of 4G
• Seamless use of many radio
protocols both licensed and
unlicensed spectrum (802.11,
bluetooth, cellular, …)
• Integration of voice and data over
the same transmission channel
• Integrated voice and data SIPenabled applications
Spring VON 2001
Session 32 - 4G Wireless: Future of VoIP
© 2000, Cisco Systems, Inc.