Just Fact: Using 4G mobile and fixed services on a dual mode WiMAX/LTE network
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Transcript of Just Fact: Using 4G mobile and fixed services on a dual mode WiMAX/LTE network
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This document is offered compliments of BSP Media Group. www.bspmediagroup.com
All rights reserved.
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Mark Altshuller CTO - Telrad Networks
November 14, 2013
Just the facts… Using 4G mobile and fixed services on a dual mode WiMAX/LTE network
AfricaCom 2013 - LTE Masterclass
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• About Telrad
• LTE Industry Trends
• LTE Ecosystem Evolution and Device Availability
• Mobile vs. Fixed Services
• WiMAX to TD-LTE Transition Roadmap
• Fixed and Mobile Convergence
• Telrad Dual Mode WiMAX & LTE Transition
2 Agenda
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Who is Telrad? 3
• We are a global provider of end-to-end 4G wireless solutions
Industry pioneer since 1951, advanced R&D team
Serves operators and ISPs worldwide
Developing next-generation WiMAX & LTE solutions
Over 280 4G deployments in 150 countries
• Recently acquired Alvarion BWA division
Product Portfolio, IP, Production, know-how – NOW TELRAD
About 1B$ WiMAX Installed base – NOW TELRAD
Alvarion BWA personnel: R&D, Sales, Operation – NOW TELRAD
Telrad has very strong financial backing with Fortissimo
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Telrad 4G Portfolio 4
Core Network
EPC, ASN-GW & AAA
Star-Suite NMS
RAN (Radio Access Network )
BreezeCOMPACT Family
BreezeMAX® 4Motion® Family
End User Devices
IP Network
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BreezeCOMPACT Family
Optimized for diverse indoor and outdoor deployment scenarios – on target to achieve maximum coverage & capacity
Small form factor enabling LTE-Advanced capabilities; green footprint without sacrificing performance
Cost-efficient installation and power usage translates to big value for budget-aware environments
Macro base station performance in a “small cell” form factor
…the right choice for now and for the future
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LTE Industry Trends
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Wireless Technology Evolution for sub-6 GHz 7
<2 GHz
<6 GHz
700, 800, 900
1800, 1900
2100
2300, 2500
3500, 3600
4900, 5200, 5800
FDD 1st N/AMPS
80s 90s 00s 10s >13
FDD - 2nd TDMA/GSM
FDD – 3rd CDMA/UMTS/
HSPA
FDD – 4th LTE
Prop./ WLAN/ 802.11
Prop./ WLAN/ 802.11
FDD/TDD Prop./ pre-
WIMAX
TDD WIMAX 802.16d-->e
TDD – 4th LTE
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WIMAX and TD-LTE Bands
• TD-LTE is overlapping current WIMAX bands Conclusion 1: TD-LTE will address various applications (not just cellular)
Conclusion 2: Additional spectrum will be used as offload for sub-2 GHz
Conclusion 3: Existing WiMAX networks will invest in transition to TD-LTE
8
700MHZ – Total available TDD spectrum used by WIMAX
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Why TD vs. FD?
Capability FDD TDD
Traffic pattern (UL & DL) Symmetric Asymmetric (per TDD split)
Frequency allocation and
limitations
Requires paired frequency and guard
band between DL & UL for full isolation
(>100 db)
May use continuous spectrum (no
guard band required) if the
neighboring systems are
synchronized. More flexible spectrum
allocation.
LTE throughput (channel: 20Mhz)
(for UE: 1Tx X 2Rx) for best
conditions
(considered as theoretical)
For 20+20, Total of 40MHz
DL: 120Mbps,
UL: 50Mbps
Total of 20Mhz
DL: 104Mbps,
UL: 23Mbps
Spectral efficiency
(spectrum utilization) ~4.2 b/s/Hz ~6.4 b/s/Hz
Channel estimation (important for
open loop radio capabilities, e.g.
diversity, beam forming)
Low channel correlation, since running
on different frequencies
High channel correlation, since
running on the same frequency
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LTE Ecosystem Evolution and Device Availability
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LTE Ecosystem & Device Availability 11
• Evolution is driven by the end device ecosystem
• Manufacturers focus on multimode support on single platform 2G/3G & LTE
• Many CPE manufacturers developing variety devices for LTE
USB dongles, desktop CPEs, outdoor CPEs, portable LTE/WiFi routers, etc.
Majority of manufacturers originally produced similar CPE for WiMAX
• First LTE adopters are MNOs
Verizon and AT&T in the US, KDDI and SoftBank in Japan
• All utilizing FDD spectrum
Soft Bank recently launched the first large-scale LTE TDD network
• Initial LTE ecosystem focused exclusively on LTE FDD mode, but shifting
• LTE TDD (also called TD-LTE) mass market expected to flourish
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LTE Ecosystem & Device Availability 12
• Mid-2013, TD-LTE appeared in market
First in 2.x GHz (band 40 and 41) and recently in 3.5 GHz (band 42 and 43)
• Leading vendors for TD-LTE CPEs include Gemtek, Green Packet, Zyxel & Huawei
• Today’s TD-LTE CPEs are purely 3GPP-compliant – mobile focused
Lack BWA fixed applications capabilities!
• Operators using WiMAX for fixed applications limited to use LTE CPEs for equivalent service
• Reality for BWA market
LTE still new, the LTE CPE prices 20% to 50% higher than WiMAX
WiMAX industry is “royalty free”, while 3GPP/LTE has royalty cost- about 10% of the market price
• Expected coming-years trends in TD-LTE
In 2-3 years fixed CPE prices will reduce once volumes cross 10 million per year threshold
In next 5 years, 3.x GHz spectrum will be used for sub-2 GHz band offload
Speculating - big operators and chipset vendors will support TD-LTE for 3.x GHz
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Mobile LTE Adoption & Challenges
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• LTE networks currently support data services only
No clear business model for mobile data services
Voice and SMS still running on 2G/3G
• Slowing down justification for LTE investment
• 3G network investments are much higher than LTE
• LTE band spread complicates global roaming adoption
• Technology is still not polished enough for mass service
3GPP continues protocol improvements
14 Challenges for LTE adoption
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• Majority of Mobile Network Operators revenues still from voice & SMS
• 2G and 3G - voice runs over CS (Circuit Switch) domain – roaming well developed
• LTE - uses IP infrastructure for voice and SMS
• VoLTE (Voice over LTE) based on Internet Multi-media System
• VoLTE framework, roaming model and interworking with current CS not finalized
• Current LTE devices (ie: iPhone 5, Samsung Galaxy) do not support VoLTE
• VoLTE will consume more spectrum for typical voice call vs 2G/3G
15 Voice and SMS
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Global Roaming
• Lack of international roaming issue for LTE adoption
• Results from wide variety of spectrum bands supported by LTE
2G/3G – total 5 bands used by most (700, 900, 1800, 1900, 2100)
3GPP defined 44 LTE bands
• Mobile devices need multi-technology platforms – 2G, 3G and LTE, further complexities
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Mobile vs. Fixed
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Mobile Applications
• LTE Mobile Industry (3GPP) focused on mobile services:
Mobility, including high speed 120 km/h plus
Roaming between providers
Using SIM/USIM for global authentication and service subscription
Integration with existing 2G/3G networks, inter-technology handover, integration with CORE and backend systems
Support of voice and SMS services based on IMS
Support for various regulatory requirements such as 911
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Fixed Applications
• Fixed BWA applications (ie: WiMAX) focus on DSL-like service:
Fixed and reliable connectivity
IP & Ethernet transparency for Metro Ethernet, VLAN or IP DHCP over wireless
LTE media (IETF based)
Telephony-like services over broadband wireless, using cost-effective SIP vs.
costly IMS-based service
Authorization & Security
Local secret credential, e.g. using username/password (in WiMAX, based on EAP-
TTLS), simplifying the operation for local connectivity (no need for 3GPP’s IMSI
global credential)
Simplified CORE and QoS, e.g. using simple AAA RADIUS-based solution (vs.
3GPP HSS DIAMETER-based), enabling static or pre-provisioned QoS solution
(vs. complicated and costly 3GPP PCRF solution)
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What Level of Service Do We Expect? 20
Wireless-DSL: Wireline Replacement
BWA Fixed Broadband
Cellular Mobile
“Connected-Everywhere” Service
Experience
Always-on: 99.999 Service Level
“Adjust to Your Bar” Level – 70-90% Service
Grade Of Service
Differentiated: Committed to SLA
“Best-Effort” Level QoS
Speed DSL Level:
1-10 mbps Continuous “Peak Rate, Where you Can”
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Mobile vs. BWA Fixed
Services MOBILE BWA FIXED
Roaming Important Not Relevant
SIM/USIM (Global credentials: IMSI)
Important Preferable Local Credentials : User/PWD, e.g. TTLS
Mobility – Intra-technology Important Required
Mobility – Inter-technology (with 3G UTRAN)
Important Not Relevant
Voice service Based on VoLTE (IMS framework) Using simple SIP based solutions
QoS Dynamic based on PCRF Simplified PCRF, enabling preconfigured QoS sessions
L2: LAN, L2VPN Not Relevant Commonly used for feeding, access, enterprise networks, industrial connectivity
IP transparent services Commonly used simple IP access Required for various applications: IP bridging, DHCP transparency, static IP, multihosting
Authorization, Authentication & Accounting
Based on Diameter based HSS, OFCS, OCS & PCRF
Preferable cost effective Radius based AAA solution
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WiMAX to TD-LTE Transition Roadmap
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WiMAX to LTE
• Transition of WiMAX to TD-LTE requires full capabilities as part of standard and global adoption
• Currently 3GPP is focused on the Mobile/Cellular industry
• October 2012 - WiMAX Forum announced WiMAX Advanced Release 2.x
Supports operator transition from WiMAX to TD-LTE – coexistence of multi-platform networks
• Support fixed BWA requirements as part of WiMAX Advanced Release 2.x activity
• Allows slower paced transition, more mature LTE ecosystem, continued customer base support
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Fixed and Mobile Convergence (FMC)
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Radio Deployment Device Characteristics
• Mobile & fixed networks use different User Equipment types Handheld devices - mobility: smartphones, USB dongles,
personal WiFi routers, etc.
Desktop modems – fixed: alternative to residential wireline DSL, data with integrated WiFi router and PSTN using SIP VoIP
Outdoor UEs/CPEs – fixed: high-end customers (e.g. business, enterprises) for high quality connectivity, support variety of LAN/L2, i.e. 802.1q, 802.1p, multiple VLANs, and VLAN tagging
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Deployment Variations 26
UEs Antenna
Line-of-Sight
Condition
Coverage /
Interference
Modulation
& Services
High Gain, Directional Antenna
LOS or Near-LOS Deployment
Directional Antenna, Inter-cell
Interference Sensitive
High RSSI, Higher QAM at Cell Edge
Low Gain, OMNI-Antenna Devices
NLOS & Multipath Diversity
Small Coverage Areas
Coverage-oriented deployment ,
Capacity extensions
Characteristics FIXED MOBILE
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FMC Deployment Approach 27
- for Fixed and Mobile - for Mobile only
• Offload pure Mobile cell sites from Fixed sites or vice versa
• Enable higher frequency reuse for Fixed
• Low frequency reuse for Mobile is applicable
• For 3.5 GHz Hybrid Small Hyper Cell (HSHC) vs HetNet
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Optimized FMC Solution 28
HSS/
AAA
Converged RAN Mobile EPC WWW
Telrad
Distributed
EPC
IMS
Backend Systems
• Distributed EPC – Optimized solution for data-centric Mobile & Fixed services
Offloading Fixed / Nomadic traffic from Mobile
Localized traffic termination – saves transport cost
Enabling unified policy and subscription management
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Dual Mode WiMAX & LTE
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Dual Mode Benefits
• 4G solutions benefit operators navigating new LTE territory
• Maximize WiMAX investments
• LTE-Advanced capabilities; WiMAX maturity
• Smooth migration path at own pace: WiMAX to LTE
• Leverage 2.3, 2.5, 3.5 & 3.6 GHz LTE offload solution
Fixed services over LTE - real convergence of mobile & fixed
• Cost saving single units
• Operational freedom and flexibility
• Reduced CAPEX and OPEX
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Multi-Technology Approach
LTE Advanced
No Transition
WiMAX
ASN GW
Multi -Technology
SDR
EPC
Coexistence
LTE
WiMAX
ASN GW
EPC
Co-Existence
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Dual Mode Topology Coverage 32
Rural
Dense Urban
Remote
Suburban
Urban
4G
Dual Mode
Portfolio
Hidden Areas
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Let’s Review
• Dual Mode Flexibility, Cost Efficiency
• WiMAX Advanced -> WiMAX to LTE Migration
Allows WiMAX and LTE operation using same infrastructure
More and more manufacturers will be developing their
technology roadmaps with LTE-Advanced product lines
Dual mode functionality helps operators with CAPEX and OPEX
Perfectly suited for African region - affordable, practical evolution
Future-proof investments, enables transition at own pace
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Our Vision: Enabling TD-LTE For Any Application 34
Businesses Residential
Video Surveillance
Mobile Industrial & Private Networks
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www.telrad.com