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8/8/2019 6-Huawei-Challenges Opportunities With CDMA-LTE Inter Working Final
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HUAWEI TECHNOLOGIES CO., LTD.
www.huawei.com
2008-5-2
2008.4
Challenges andOpportunities withCDMA/LTEInterworking
8/8/2019 6-Huawei-Challenges Opportunities With CDMA-LTE Inter Working Final
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CONTENTS
Opportunities for CDMA operators
Smooth Evolution Solutions
Huawei Overview
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HUAWEI TECHNOLOGIES CO., LTD. Page 3
LTE Vision Business drivers
Global economies of scale
Broad contributions across the industry
International roaming for todays global business partnerships
Technical drivers
Achievable peak rates up to 278 Mbps in 20 MHz and 4x4 MIMO
Much reduced latency capable of supporting commercial VoIP services
Interworking with 1xRTT and HRPD networks for a smooth migration to LTE
Timeline
First clean version of LTE specification is available from Dec. 2007, and will be stable in Dec. 2008
Prototype live demo available today from most tier 1 vendors
2002 2006 201120102008/2009
EV-DO Rev.0DL:2.4Mbps
UL:153.6kbpsIn 1.25MHz
LTE Trial LTECommercial
EV-DO Rev.ADL:3.1Mbps
UL:1.8MbpsIn 1.25MHz
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HUAWEI TECHNOLOGIES CO., LTD. Page 4
Key Technologies of LTE
Physical spectrum efficiency Improvement(OFDMA/SC-FDMA/MIMO/Time and space scheduler/Interference
mitigation)
Efficient usage of PHY layer(Always on /short TTI/Efficient MAC Mapping/E-MBMS)
Networking
(Scalable bandwidth/All-IP
/Flat architecture/SON)
Benefit:
Lower CAPEX/OPEX Explore spectrum (including re-
farming) efficiently
Enable more business models
Benefit:
Lower data plan latency
Lower idle->active latency
Higher APP throughput
E-MBMS comparable to DVB-H
Benefit:
DL: 3~4R6 HSDPA average
UL: 2~3R6 HSUPA average
DL: 141Mbps peak (2*2 MIMO)
UL: 50Mbps peak (1*2MIMO)
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HUAWEI TECHNOLOGIES CO., LTD. Page 5
CDG Believes LTE will Co-exist with CDMA
One technology fits all approach to meeting todays telecommunicationsrequirements will not hold true in the next generation of mobile broadband
solutions. Rather, operators will match particular applications andservices to the technologies that best suit them.
3G CDMA will remain the leading and most economical platform to delivercore mobile broadband services, and operators will use OFDM-basedsystems such as LTE etc. to complement those services with additionalfeatures and broadband capacity.
The CDMA Development Group (CDG)CTIA WIRELESS 2008LAS VEGASMarch 31, 2008
Verizon Selects LTE as 4G Wireless Broadband Direction
Verizon.com Nov. 29th 2007
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HUAWEI TECHNOLOGIES CO., LTD. Page 6
Requirements to Achieve a SmoothMigration to LTE
BSC/RNCBSC/RNC
BSC/RNCBSC/RNC
PDSNPDSN
AGWAGW
Flexible spectrum re-farming
options
Broad portfolio to address a wide
range of deployment scenarios
leveraging multimode equipment on
the ground
Quality of Experience across
access networks through seamless
interworking
Smooth network migration to the
new architecture leveraging
common platforms and open
interfaces
HAHA
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HUAWEI TECHNOLOGIES CO., LTD. Page 7
Typical Spectrum Usage for LTE Introduction
Frequency band
AWS (LTE)
Year
2008 2010 2020
CDMA LTE launch All LTE
2009
CDMA 1900M LTE 1900M
CDMA 800M LTE 800M
LTE 700
800M/1900M
CDMA
LTE(10M)
LTE(10M)
800M/1900M
CDMA
700M/AWS
700M/AWS
LTE(5M) CDMA
800M/1900M
Carrier Bandwidth Scalability and Multimode BTS are Critical
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HUAWEI TECHNOLOGIES CO., LTD. Page 8
Potential LTE Roll Out StrategiesHot spot /Dense Urban Urban /Sub Urban Rural0 Services
CDMA CDMA CDMA CDMA
LTE
CDMA CDMA CDMA CDMA
LTELTE LTE
Hotspot Coverage:
broadband access,web surfing, nomadic
Macro Coverage:
Mobile Broadband,Real-time services,VoIP
CDMALTELTE LTE Convergence & fixedbroadband services
Micro Micro Micro Femto LTE
Broad and Flexible LTE/SAE Portfolio is a Must Have!
Femto Femto FemtoFemto Femto Femto
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HUAWEI TECHNOLOGIES CO., LTD. Page 9
S5
S2a ----
S7 ----
Rx+
LTE/EPC Interworking with 1xEV-DO Rev-A
Network Common Platform and Open InterfacesAllows for Scalability and Flexibility
1xEV-DO Network
--- A10A11 Ra
diusAA
A
A12
Rev-ABTS
Network3GPP2AAA
Server
HSGW
AN/PCF AN-AAA
HA
MIPv4 ---
E-UTRANNetwork
S6a
SGi
EPC
S1-U
S1-MME ---- ---- S11
MME
S-GWP-GW
PCRF
HSS
OperatorsIP
Services /Internet
S7c ----
S101 ----
S103 ----
---- S7aS6c
SWx
STa ----
3GPPAAA
Server
PDSN
Diameter AAA
LTE/
e
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HUAWEI TECHNOLOGIES CO., LTD. Page 10
Two Interworking Options Non-optimized inter-working between SAE and HRPD
Longer service interruption time with little impact on HRPD network
Suitable for Best effort service in the initial stage
Optimized interworking between EPS and 1xEV-DO
Minimize the total service interruption time experienced at the UE
source access system
target access system
attach and perform service activation (in the case of E-UTRAN) OR
perform a session configuration or traffic allocation request(HRPD)
leaving the source access system
Data Transfer in target access system
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HUAWEI TECHNOLOGIES CO., LTD. Page 11
High-Level Functionalities for Ev-DO/LTEOptimized Interworking
BTS & eNodeB System Information Broadcast,
Measurement Control, HO control, Tunneling proceduresover the air & over core network interfaces, data forwarding
procedure
RNC & MME Tunneling procedures to/from the base stations,
S101 interface and data forwarding bearer establishment
HRGW & Serving GW Establish bearers for data forwarding
procedures over S103 interface
PDN GW Implementation of the data plane anchoring
function for CDMA traffic and the S2a interface
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HUAWEI TECHNOLOGIES CO., LTD. Page 12
Seamless Voice Interworking BetweenLTE/1X
Adopt 3GPP2 IMS VCC to anchor all voice call The IWS function to reside in the 1X MSC
S102 extends the tunneling of 1X messages from the MME to IWS 1X call establishment messages is tunneled over the air and S1-MME
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HUAWEI TECHNOLOGIES CO., LTD. Page 13
Focus on Innovation, Dedication, Customization and Cost
Experience, Stability, and Support of a Tier-1 Vendor with
70k employees
Fastest Growing Vendor with End-to-End Portfolio
Partnership
Dedication 32k+ R&D engineers
Customized R&D for Customers
Innovation TCO Savings through Technology Innovation
Common Platform across multiple Products
Huawei Overview
$16B contract sales in 2007
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HUAWEI TECHNOLOGIES CO., LTD. Page 14
Key Take-Away
LTE offers real business benefits, high value technical
improvements and early availability for CDMA operators.
Flexible broad multimode portfolio and seamless interoperability
are the key factors as CDMA and LTE might co-exist for a long
time
Huawei is a leading player in LTE
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Thank you
www.huawei.com
Copyright2008 Huawei Technologies Co., Ltd. All Rights Reserved.The information contained in this document is for reference purpose only, and is subject to
change or withdrawal according to specific customer requirements and conditions.