Backhaul architecture for LTE, not the revolution $ MME S-GW MME S-GW S1 S1 S1 S1 NodeB RNC HD Mobile Banking Monitorin S1-MME S1- S1-U -U M S1 Video g S1 S1 S1 ME S1 S1-M ME S1-U -U S1-M S1 HeNB GW ME X2 E-UTRAN S1 aGW S1 X2 X2 eNBPosition System E-book Online eNB eNB Music eNB Clock/Time More mobile applications Mesh topology of LTE HeNB Synchronization HeNB HeNB
How bandwidth changes transport network architecture 40x BandwidthSource: Ovum Microwave’s critical role in North American backhaul 2010
Reducing TCO is challenging The value of traditional service keeps decreasing User Value ($) Data (Content Service） Data (Access and ICT) Voice M2M etc. Time1980 Voice traffic 2002 Operator 2010 Non-voice traffic content conversion User’s ARPU value is going down Bandwidth 400 450 400 330 350 300 230 250 200 140 150 70 100 50 0 2006 2007 2008 2009 2010 Data ARPU($) Voice ARPU($) CAPEX decrease cannot match traffic Growth!
Backhaul network architecture optimization Reuse legacy metro network and/or access network Legacy Provide clock synchronization for mobile serviceNetwork Reuse Provide service offloading capability from retired network Support mesh architecture for LTE service New Services Support service transport for fixed line Support Support bandwidth expansion for LTE & FMC Optimize network architecture to reduce CAPEX Low TCO Simplify E2E operation architecture to reduce OPEX Optimize technology selection saving OPEX Transport Node Architecture Optimization !
Backhaul architecture optimizationReuse metro Ethernet network TDM E1 BTS BSC IMA E1 NodeB Metro Ethernet Network RNC FE NodeB aGW (HSPA) Core end site FE/GE gateway node Cell site eNB gateway node One network implements FMC and full-service operation with less investment Make full use of the legacy metro network resources End to end traffic tunnel, protection, QoS and OAM by overlay mode
Backhaul architecture optimizationReuse legacy metro network ATM/Eth/IP FE Network BSC NodeB DSLAM FE/GE BRAS (HSPA) FE/GE RNC N*E1 eNB Legacy SDH or aGW E1/STM-N Leased Line Cost-efficient transport for high value and low value traffic, fast service provision Make the full use of legacy metro network resources End to end traffic tunnel, protection, QoS and OAM by overlay mode
Service supportBackhaul architecture for 2G/3G transport
Service supportArchitecture for LTE transport Base Station Access Layer Aggregation Layer Core Layer POC3 POC2 POC2 POC1 eNB MME L2 VPN VRRP eNB S-GW VLAN X2 S1 BFD for VRRP POC3 POC2 POC2 POC1 eNB MME L2 VPN / L3 VPN L3 VPN eNB S-GW
Reduce costBandwidth vs. Optimizing optical transport network architecture IP/MPLS Core xPON aGW NodeB eNB DSLAM Cost C par i si on PTN D / O vs. PTN O M om +W M TN +R AD 1. 40 1. 20 1. 00 DWDM/OTN Metro DWDM/OTN Core R io 0. 80 at 0. 60 0. 40 0. 20 0. 00 0 100 200 300 400 Bandw dt h (Gb/s) i PTN PTN + WDM/OTN PTN + ROADM
Reduce costBandwidth vs. Optimizing last mile network architecture Access Aggregation Core MGCF CSCF SGSN BSC Newly Built IP Core GMSCe Network RNC MSCe STM-1 GGSN
Reduce costOptimize transport node architecture Service Bandwidth Support 2G/3G/LTE Embedded WDM layer for service, and FMC bandwidth expansion Low TCO Scenario Support diverse scenario Support diverse media
Optimized transport node architecture MNS Metro Core 10GE/40GE/100GE Metro Edge GE/10GE DSLAM/OLT Access MW GPON/xDSL LTE/WIMAX BTS/NodeB VPN BTS NodeB LTE/WIMAX Cost per bit reduction with diverse access media optimizing for different network Network deployment simplicity with flexible architecture optimizing for different legacy network Better scalability for fixed line service with capabilities evolving toward future network