sequans communications: from wimax to 4g communications: from wimax to 4g ambroise popper ......
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Sequans Communications: from WiMAX to 4GAmbroise Popper – Director, Product Management
IEEE ComSoc – May 13, 2009
Sequans: leading the WiMAX market
Maturity of products– More than half of the WIMAX Forum Certified™MIMO products are based on
Sequans chips– Large number of Sequans-based terminals are deployed with leading BS vendors:
Samsung, Motorola, Alcatel-Lucent, Cisco, Huawei, Alvarion, ZTE
Superior performance & best cost structure– Maximum throughput– Lowest power consumption– Chips for low-cost CPE and mobile handsets
Technology leadership– 2 Tx enabling UL MIMO– Integrated RF/BB 65nm single die & triple-band RF– Pico and femto cell– Mobile WiMAX R1.5-ready and 802.16m in progress
Involved with leading global operators
Malaysia: Packet One
Russia: Scartel
India: BSNLTata, Reliance
USA:Clearwire
Japan: UQKorea: KT
Pakistan: Mobilink
UK: France:UKBB SHD
S. Africa: Vodacom
Bolivia:Nuevatel
Argentina:Argentina Telecom
WiMAX today: uplink is the bottleneck!
14/05/2009 5
Downlink
Uplink
64-QAM16-QAM
QPSK
=> 6 dB DL/UL imbalance
Typical WiMAX deployment 1Tx Mobile Station
Base Station
Mobile Station
Tx power 43 dBm 23 dBm
Subch. gain 0 dB 16 dB
MIMO gain 2 dB 0 dB
-> Uplink directly limits the coverage
64-QAM 16-QAM QPSK
Loss of downlink connection
Loss of downlink connection
Loss of uplink
connection
Loss of uplink
connection
14/05/2009 6
Increasing uplink budget with 2Tx
Link-budget gains
+4.5 dB : CDD
+5.5 dB: STC
23 dBm
23 dBm
23 dBm
2 Tx MS @ 23 dBM 1 Tx MS @ 23 dBM
vs.vs.
Sequans solution Legacy solution
works today with existing base stations (WiMAX R1.0)works today with existing base stations (WiMAX R1.0)
requires support of STC at the base station (WiMAX R1.5)requires support of STC at the base station (WiMAX R1.5)
Coverage gains with 2Tx CDD
14/05/2009 7
Downlink
Uplink
64-QAM16-QAM
QPSK
+4.5 dB gain on link budget+30% coverage-40% capex
64-QAM16-QAM
QPSK
4.5 dB
Loss of uplink
connection 1Tx
Loss of uplink
connection 1Tx
Loss of downlink connection
Loss of downlink connection
Loss of uplink
connection 2Tx CDD
Loss of uplink
connection 2Tx CDD
SQN1210: continuing innovation
SQN1210 launched at Mobile World Congress ‘09
The New SQN1210: SoC for Mobile WiMAX Mobile Stations
The first 65nm single die baseband and RF chip
Ultra low power consumption:
<350 mW active mode (with fully loaded MIMO traffic)
0.5 mW standby mode
Very high throughput >40 Mbps
10X10 package: no external SDRAM
Triple band RF support: 2.3, 2.5, 3.5 GHz
Supports 2Tx, uplink MIMO, and mimoMAXTM technology
First announced customer - ZyXEL
IndustryIndustry--leading performanceleading performance20082008
SQN1130:
BaseBand
Separate 2.3/2.5 GHz & 3.5 GHz RF
20072007
SQN1170:
BB+RF single-chip
2.3/2.5 GHz
DRAM included
20092009
SQN 1210: BB+RF single-die
2.3/2.5/3.5 GHz
DRAM included
WiMAX: a foundation for 4G technology
• 4G technologies are based on same core technologyas Mobile WiMAX
• At chip level, many core IP blocks can be leveraged– OFDM modulator/demodulator– FEC– Channel estimation– MIMO processing
• Main differences to be taken into account– 20MHz channels– FDD support (only H-FDD required for WiMAX R1.5)
Sequans vision for 4G
•Develop technology for leading 4G technologies
– IEEE 802.16m– LTE
•Support smooth evolution of WiMAX operators to 4G
– Converged dual-mode ICsfor backwards compatibility
•Main differentiators– Efficient low-power
implementation– Radio performance
WCDMA
GSM, EDGE
WiMAX-802.16d (Fixed)
WiMAX-802.16e
EDGE Evolution
HSPAHSPA+
LTE
2006 2007 2008 2009 2010 2011 2012
TD-SCDMA
TOWARDS4G
Convergence 802.16mLTE-ADV