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Lte-m Sierra Wireless V1

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Lte-m Sierra Wireless V1

  1. 1. Cellular LPWA and Nicolas Damour Director, Technology Partnership Development IoT Academy Meetup, September 27th 2018, Rotterdam - ndamour@sierrawireless.com
  2. 2. 2 Sierra Wireless – Comprehensive Global IoT Offering IoT Devices IoT PlatformIoT Connectivity
  3. 3. 3 Mobile IoT – Cellular LPWA is available NOW Consumption Coverage Cost Global Durable Trusted 2016: HL77xx First LTE-M modules worldwide 2017: WP77xx LTE-M+NB-IoT (+2G) smart modules 2018: HL78xx 2nd gen. LTE-M/NB-IoT/2G modules 2018: LX60 Integrated LTE-M/NB-IoT routers All available now $ 375/300 kbps Low latency - Mobile 60/20 kbps Med latency - Stationary
  4. 4. 4 Global Service PLUS all the benefits of cellularCellular LPWA – Mobile IoT Trusted Ecosystem Durable Investment The 3 C’s of Cellular LPWA - Mobile IoT C CONSUMPTION 100x lower power than 4G LTE 10+ years battery life C COVERAGE 5-10x greater than 4G LTE 164dB of Link Budget C COST 50% reduction from 4G LTE Think 2G or Bluetooth, plus lower TCO $
  5. 5. How to achieve the three C‘s C CONSUMPTION 100x lower power than 4G LTE 10+ years battery life C COVERAGE 5-10x greater than 4G LTE 164dB of Link Budget Repetitions with HARQ Frequency Hopping Improved algorithms C COST 50% reduction from 4G LTE Think 2G or Bluetooth, plus lower TCO $ How?The 3 C's of LPWA Power Saving Mode Extended Discontinuous Reception Radio Signaling Optimizations 75% Complexity Reduction Tighter Integration Economies of Scale
  6. 6. Coverage Enhancement C CONSUMPTION 100x lower power than 4G LTE 10+ years battery life C COVERAGE 5-10x greater than 4G LTE 164dB of Link Budget Repetitions with HARQ Frequency Hopping Improved algorithms C COST 50% reduction from 4G LTE Think 2G or Bluetooth, plus lower TCO $ How?The 3 C's of LPWA Power Saving Mode Extended Discontinuous Reception Radio Signaling Optimizations 75% Complexity Reduction Tighter Integration Economies of Scale See also https://www.sierrawireless.com/resources/white-paper/coverage-analysis-lte-m-cat-m1/
  7. 7. Coverage Enhancement Techniques 1. Repetition w/HARQ (hybrid automatic repeat request) 2. Frequency Hopping (LTE-M only) 3. Frequency Selective Scheduling (LTE-M only) 4. Downlink Power Spectral Density (PSD) Boosting 5. Improve time/frequency/channel estimation – Redundancy version cycling – Improved scrambling methods Narrow band or Sub-PRB (used by NB-IOT and LTE-M in Rel15) is NOT a coverage technique it mainly increases UL spectral efficiency
  8. 8. Target Maximum Coupling Loss – or Link Budget LoRa Link Budget: 157dB Targets for LTE-M and NB-IOT (based on different hypothesis): • NB-IOT target for MCL was 164dB based on: – Realistic NF (noise figure) of 3dB – Device PA (power amplifier) of 23dB • LTE-M target for MCL was 155.7dB based on: – Conservative NF of 5dB – Device PA of 20dBm • LTE-M target for MCL was 160.7dB – based on NB-IOT implementation assumptions KEY TAKEAWAY 1. Targets were exceeded 2. LTE-M and NB-IOT both provide 164dB MCL: +20dB gain compared to 4G See also https://www.sierrawireless.com/resources/white-paper/coverage-analysis-lte-m-cat-m1/
  9. 9. 9 Coverage Mode A/B (for LTE-M) *Coverage Mode B: Firmware upgrade to devices and software upgrade to network LTE-M Channel Mode A Repeats Mode B Repeats PSS/SSS 1 1 PBCH 1 4 MPDCCH 16 256 PDSCH 32 2048 PUSCH 32 2048 PUCCH 8 32 PRACH 32 128 Mode A Mode B* Repeats** Limited Maximum repeats supported Mobility Full Limited (no voice) Coverage Improvement + 10-12dB + 20dB Device Support Mandatory Optional Availability 2017 End of 2019 **Number of repeats available depends on the channel
  10. 10. MCL and Range study from Telstra, Ericsson • This study is showing what is possible in an extreme rural setting – Mountain top – Line of sight – Range 160km • In a city, expect: – In-building loss +10-30 dB – Range of 10-15km * Source: R1-166599 Telstra, Ericsson 164dB targetCoverage today Theoretical Free SpaceActual measurement data from Telstra study
  11. 11. 11 LTE-M Simulation on Coverage Enhancement KEY TAKEAWAY • Similar performance for NB-IOT • Repeats reduce the data rate • Repeats reduce spectral efficiency (Sub-PRB can help)10 100 1000 10000 100000 142 146 150 154 158 162 166 170 DataRate(bps) MCL (dB) Downlink Data Uplink Data Normal Coverage Extended Coverage Region ~Out of Coverage Region
  12. 12. Power Efficient Operation C CONSUMPTION 100x lower power than 4G LTE 10+ years battery life C COVERAGE 5-10x greater than 4G LTE 164dB of Link Budget Repetitions with HARQ Frequency Hopping Improved algorithms C COST 50% reduction from 4G LTE Think 2G or Bluetooth, plus lower TCO $ How?The 3 C's of LPWA Power Saving Mode Extended Discontinuous Reception Radio Signaling Optimizations 75% Complexity Reduction Tighter Integration Economies of Scale
  13. 13. 13 Power Saving Methods for LTE-M/NB-IOT/EC-GSM power consumption is reduced in devices via the use of methods:3 Flexible Sleep (eDRX) PSM (Power Saving Mode) Radio Signalling Opt. (not available for EC-GSM) Reduces all core networking layer signaling overhead what does it do? technology used PSM – Power Save Mode CA – Q2’17 Reduces 50-75% of Radio Resource signaling overhead what does it do? technology used Control Plane Optimization CA Q2’17 User Plane Optimization CA H1’18 Application controlled Sleep between Paging Opportunity what does it do? technology used I-eDRX/C-eDRX Q4’17 OFFLINE SCENARIO ONLINE SCENARIO
  14. 14. 14 Offline Scenario illustration shown for HL78CAT-M1 system acquisition PowerConsumption boot networksignalling registration 0 seconds5 10 15 20 25 C-DRX (2mA) the application data being sent de-registration Modem Off Leakage Current ~1μA RRC connect Offline Scenario Infrequent e.g. > 1 Hr device originated traffic - Best power consumption - Cannot receive data most of the time, except only during C-DRX Period Modem Off radioresourcesignalling
  15. 15. 15 Power Saving Mode - Offline Scenario illustration shown for HL78CAT-M1 system acquisition PowerConsumption RRC connect 0 seconds5 10 15 20 25 the application data being sent 1 PSM (up to 413 days) 2 Radio Signalling Opt. Power Saving Techniques: 4 Faster Boot 3 Flexible Sleep C-eDRX (up to 10 sec) PSM C-eDRX (0.5mA) Leakage Current ~1μA Modem Off boot PSM
  16. 16. 16 Offline Performance Legacy Arch New Arch Boot SystemAcquisition Registration ApplicationData C-DRX 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 Time (sec) 0 20 40 60 80 100 120 140 160 180 200 220 240 Current(mA) C-eDRX 0 2 4 6 8 10 12 14 Time (sec) 0 20 40 Current (mA) • >35X reduction in power • Lower PA power and lower Idle mode current • New Arch coming in WP78 and HL78
  17. 17. 17 PSM Details • T3412 is Extended Value – PSM Mode • T3324 is Idle mode time • Needed for MT data e.g. SMS • Initially requested via Attach Request • Accepted times are returned in Attach Accept • Updates in TAU Request/Accept • Modem must transmit at least a TUA every PSM cycle • Practical minimum PSM Cycle is ~ 30min • Maximum PSM Cycle (413 days) • AT+CPSMS=[<mode>[,<Requested_Periodic- TAU>[,<Requested_Active-Time>]
  18. 18. 18 Offline Performance Legacy Arch New Arch Boot SystemAcquisition Registration ApplicationData C-DRX 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 Time (sec) 0 20 40 60 80 100 120 140 160 180 200 220 240 Current(mA) C-eDRX 0 2 4 6 8 10 12 14 Time (sec) 0 20 40 Current (mA) • >35X reduction in power • Lower PA power and lower Idle mode current • New Arch coming in WP78 and HL78 • all three power saving techniques are used but PSM is the most important • 87% of signalling overhead has been removed • implementation matters!! especially boot time! • 35X reduction in power
  19. 19. 19 Device wakes up every 2.5 seconds Online Scenario illustration shown for HL78CAT-M1 power I-DRX power C-DRX (2mA)I-DRX RRC connect the application data being received Sleep Current ~1mA Page received Online Scenario Device remains “online” allowing both device originated (transmit) and/or terminated (receive) traffic
  20. 20. 20 Device wakes up every 5sec to 44min/175min longer sleep times let me get into a deeper sleep state (1mA to 10µA) I want to sleep for 1 minute instead of 2.5 seconds OK! Extended DRX - Online Scenario illustration shown for HL78CAT-M1 1 Flexible Sleep I-eDRX (up to 44/175min) 2 Radio Signalling Opt. (75% Reduction) Power Saving Techniques: 3 Flexible Sleep C-eDRX (up to 10 sec) powerpower I-eDRX I-eDRX RRC connect the application data being received C-eDRX (0.5mA) Page received Sleep Current ~10μA
  21. 21. 21 eDRX Details • TeDRX requested by device but network can override it set by network • TeDRX maximum Was 2.56 sec now – 44 min LTE-M and 175min NB-IOT • TDRX requested by UE/Application 320ms to 10sec • TPTW – paging transmission window – selected by network for reliability • C-eCRX works similar to I-eDRX – but no TPTW and max TDRX is 10 sec • UE requests parameters during attach procedure and TAU procedure – same as PSM • UE Reachability Event in SCEF can be used by cloud applications • At+CEDRXS==[<mode>,[,<AcT-type>[,<Requested_eDRX_value>]]] TeDRX TPTW TDRX TDRX TeDRX TPTW TeDRX TPTW TDRX TDRX TDRX TDRX Idle mode Extended Discontinuous Reception (I-eDRX)
  22. 22. 22 I-DRX Online Scenario Comparison Legacy powerpower C-DRX (2mA)I-DRX New power C-eDRX (0.5 mA) I-eDRX power I-eDRX
  23. 23. 23 I-DRX Online Scenario Comparison Legacy powerpower C-DRX (2mA)I-DRX New power C-eDRX (0.5 mA) I-eDRX power I-eDRX • the flexible sleep mechanism is the most important • 100X idle mode current reduction with 80s I-eDRX
  24. 24. 24 Online Use Case Power Comparison Sending messages of 1000bits using a battery of 2.5AH with typical coverage of 0 dBm TX power Legacy (Cat-1) New Arch (LTE-M/NB-IOT) Offline 0 5 10 15 20 25 30 35 1 2 3 4 5 6 7 8 9 10 11 12 BatteryLife/years Messages per Day 0 5 10 15 20 1 2 3 4 5 6 7 8 9 10 11 12 BatteryLife/years Messages per Day HL76xx (Cat-1) obscured by WP77xx 81sec I-eDRX
  25. 25. Power consumption benchmark Item HL7800 Q Based module S Based module NBIoT Only module Notes PSM floor current <3µA 9µA 3µA Best low floor consumption available on the market E-DRX floor current <80µA <30µA (*) 0.750mA 0.120mA Best low floor consumption available on the market I-DRX (2.56s) 1.5mA <0.70mA (*) 2mA 4mA E-DRX (20.48s) <0.175mA <0.056mA (*) 0.750mA E-DRX (81.92s) <0.080mA <0.040mA (*) 0.750mA 0.120mA PSM Cycle Energy with Data <200mA*sec <90mA*sec (*) <600mA*sec Peak Active Current from 3.7V 450mA 500mA C-DRX, I-DRX, E-IDRX average current values are given at “Good” coverage condition close to MCL143dB condition (*) Will be achieved with maintenance release after first commercial availability HL7800 is by far better than all others solution available on the market in terms of current consumption. Thanks to booting time enhancement ( <1s compare to competition at 10s) and hibernation technology used to have ULTRA low floor consumption using embedded memory retention. HL7800 allow to work more than 10 years with single battery.
  26. 26. 26 HL7800 Battery Life time benchmark 0 2 4 6 8 10 12 14 0 2 4 6 8 10 12 14 16 18 Module level figures, Li-On 300mAh, eDRX @81.92sec, no data, good network conditions Power Save Mode with periodic traffic (PSM) Always on standby (eDRX) Module level figures, CR123A, 50bytes UL every two hours, good network conditions HL7800 Chipset 2 Chipset 1 HL7800 Chipset 2 Chipset 1 months years
  27. 27. Cost reduction factors C CONSUMPTION 100x lower power than 4G LTE 10+ years battery life C COVERAGE 5-10x greater than 4G LTE 164dB of Link Budget Repetitions with HARQ Frequency Hopping Improved algorithms C COST 50% reduction from 4G LTE Think 2G or Bluetooth, plus lower TCO $ How?The 3 C's of LPWA Power Saving Mode Extended Discontinuous Reception Radio Signaling Optimizations 75% Complexity Reduction Tighter Integration Economies of Scale
  28. 28. 28 LTE-M / NB-IOT Cost Reduction Legacy Cellular RAM Power Management XTAL Baseband Radio PAFlash Flash BB/RF XTAL LTE-M NB-IOT Integration Reduce Complexity: • Half Duplex • Single receiver • Lower Memory • Lower bandwidth • Simpler processing • Lower PA 4,30 0,25 0,21 CAT-3 CAT-M1 CAT-NB1 RAM 20 1,08 0,18 CAT-3 CAT-M1 CAT-NB1 RF…
  29. 29. 29 Global Service Global Coverage 675+ Networks 140+ Countries Trusted Ecosystem Healthy competition Flexibility Built-in Security Durable Investment Scalability Long-term availability 5G-Ready Beyond the 3 C’s – focus on some business aspects
  30. 30. Global Service Global Coverage 675+ Networks 140+ Countries
  31. 31. 31 4G LTE-M (Cat-M1) 4G NB-IOT (Cat-NB1) 4G LTE-M + NB-IOT (Cat-M1 + NB1) Mobile IoT Commercial Deployments – June 2018
  32. 32. 32 4G LTE-M (Cat-M1) 4G NB-IOT (Cat-NB1) 4G LTE-M + NB-IOT (Cat-M1 + NB1) Mobile IoT Commercial Deployments – End of 2018
  33. 33. 33 M1 /NB1 roaming M1 is a direct evolution of LTE This leads to easier roaming based on current roaming models; Roaming works well on LTE-M technically (business question). NB1 is more dedicated and often involves new network elements as well as new business models Roaming contexts currently being defined within the GSM Association
  34. 34. Trusted Ecosystem Healthy competition Flexibility Built-in Security
  35. 35. 35 Built-in Security Security is about… Integrity • Tighter integration • Mutual authentication Security is about… Confidentiality • End-to-end over the air encryption • SIM card as a Secure Element Security is about… Availability • Licensed Spectrum & Cell structure • Network service otpimization
  36. 36. 36 Proprietary and Confidential Start with Ready-to-Connect eUICC, then evolve later • Moving environment: more fragmented as ever • Start with Ready-to-Connect eUICC for pre-integrated solutions • The tech & biz environment will continue to evolve • Choose upgradable modules and upgradable connectivity
  37. 37. Durable Investment Scalability Long-term availability 5G-Ready
  38. 38. 38 Cellular network structure Managed, licensed spectrum Network Service Optimization Proven Scalability
  39. 39. 39 3GPP Release 14 LTE-M • Cat-M1 Speed Increase (DL 590kbps, UL 1.1Mbps) • VoLTE enhancements • Enhanced Positioning (OTDOA)) • Multi-cast • Introduction of Cat-M2 (~ 5MHz) (CAT-M2) – new HW NB-IOT • New Cat-NB2 with speed increase (65/145 kbps) • Positioning (OTDOA) • Multi-cast (similar as in LTE-M) • Enhanced multi-carrier support • Improve Mobility (but no handoff support) • New UE power class at 14dBm LTE-M Speed overview Downlink (kbps) Uplink (kbps) Full Duplex CAT-M1 Rel 13 800 1000 Rel 14 1000 3000 Half Duplex CAT-M1 Rel 13 300 375 Rel 14 590 1100 Full Duplex CAT-M2 Rel 14 4000 7000 Half Duplex CAT-M2 Rel 14 2350 2625 NB-IoT Speed Overview Downlink (kbps) Uplink (kbps) CAT-NB1 Rel 13 23 58 Rel 14 23 58 CAT-NB2 1 HARQ Rel 14 43 106 CAT-NB2 2 HARQs Rel 14 65 145
  40. 40. 40 3GPP Release 15 • UL spectral efficiency (sub-PRB) – capacity, cost, battery, coverage • Early data transmission (UL in Msg3) – capacity, latency, battery • Paging channel (quick paging) – battery life • Reduce system acquisition time • Relaxed monitoring for cell reselection • Congestion/overload control (e.g. CE Level Based ACB) – capacity • DL spectral efficiency (64 QAM) - capacity • Improved support for pilot muting – improves NR compatibility • Lower UE power class 14 dBm – device cost • Higher UE velocity – expanded use case
  41. 41. 41 And what about...
  42. 42. 42 Enhanced Mobile Broadband (eMBB) • Immersive video • Augmented reality • 3D video What is 5G exactly?
  43. 43. 43 Enhanced Mobile Broadband (eMBB) • Immersive video • Augmented reality • 3D video Critical IoT (URLLC) • Autonomous vehicles • Smart grid • Factory automation What is 5G exactly?
  44. 44. 44 Enhanced Mobile Broadband (eMBB) • Immersive video • Augmented reality • 3D video Massive IoT (mMTC) • Smart cities • Smart logistics • Smart metering Definitions mMTC massive Machine Type communications URLLC Ultra reliable low latency communications Critical IoT (URLLC) • Autonomous vehicles • Smart grid • Factory automation What is 5G exactly?
  45. 45. 45 Enhanced Mobile Broadband (eMBB) • high peak speed • high average speed • spectral efficiency • high capacity Massive IoT (mMTC) • high density • low cost • low power • high coverage Definitions mMTC massive Machine Type communications URLLC Ultra reliable low latency communications Critical IoT (URLLC) • low latency • high reliability • 0ms hand-offs • high mobility What is 5G exactly?
  46. 46. 46 Today Future Source: GSM Association Massive IoT - LPWA (NBIoT & LTE-M) Enhanced Mobile Broadband Critical IoT Introduction of 5G pillars over time
  47. 47. 47 Today’s LPWA is on the path t 4C’s of LPWA make it a new category for cellular COST: More than 50% reduction compared to broadband LTE. Think 2G or Bluetooth. CONSUMPTION: More than 75x lower power than broadband LTE. 10+ years battery life. COVERAGE: 5-10x greater compared to broadband LTE. CAPACITY: Supports over 1 million connected devices per square kilometer. Paper: https://www.sierrawireless.com/resources/white-paper/evaluation-of-lte-m/ ready From 3 C’s to 4 C’s in the 5G World
  48. 48. 48 COST < 50% of broadband LTE CONSUMPTION 75x lower than broadband LTE, 10+ yrs batt. COVERAGE 5-10x greater than broadband LTE CAPACITY > 1 million connected devices per km² Today’s Mobile IoT is the Massive IoT of 5G Massive IoT (mMTC) Enhanced Mobile BroadBand Critical IoT (URLLC) Technical White Paper showing how Mobile IoT complies to 5G: https://www.sierrawireless.com/resources/white-paper/evaluation-of-lte-m/
  49. 49. Thank you Nicolas Damour, ndamour@sierrawireless.com

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