3GPP LTE for the Internet of Things. Dr. Christian Hoymann, Ericsson Research

Transcription

1 3GPP LTE for the Internet of Things Dr. Christian Hoymann, Ericsson Research

2 Outline Technology landscape 3GPP history Radio requirements & technology components Summary LTE for the Internet of Things Commercial in confidence ComNets FFV Page 2

3 IoT Technology Landscape Internet of Things (IoT) Simple cheap devices Low energy consumption (Delay tolerant) Can be massive numbers Cellular IoT in licensed spectrum IoT Connectivity in unlicensed spectrum 3GPP (UMTS) LTE machine-type communication (MTC) Narrowband IoT (NB-IoT) Extended coverage GSM (EC-GSM-IOT) Short range Bluetooth Low Energy Wi-Fi, IEEE802.11ah IEEE ZigBee Z-wave Long range Sigfox Weightless OnRamp LoRa ETSI LTN LTE for the Internet of Things Commercial in confidence ComNets FFV Page 3

4 Outline Technology landscape 3GPP history Radio requirements & technology components Summary LTE for the Internet of Things Commercial in confidence ComNets FFV Page 4

5 3GPP IOT history most recent RAN Study Item on low-cost MTC UEs based on LTE Vodafone driven Special Interest Group LTE-MTC LTE-evo NB-M2M GERAN Study Item on Cellular System Support for IoT RAN Work Item on Low cost & enhanced coverage C-UNB NB-OFDMA NB-CIOT EC-GSM N-GSM LTE-eMTC NB-LTE PCG EC- GSM NB-CIOT & NB-LTE GERAN Work Item on EC-GSM RAN Work Item on NB-IOT RAN Work Item on Further Enhancements for MTC Rel-11 Rel-12 LTE for the Internet of Things Commercial in confidence ComNets FFV Page Rel-13 today

6 3GPP Deployment scenarios GSM (Stand alone) 200kHz (Guard band) LTE LTE NB-LTE / NB-IoT 200kHz LTE 200kHz (Inband) LTE for the Internet of Things Commercial in confidence ComNets FFV Page 6

7 Outline Technology landscape 3GPP history Radio requirements & technology components Summary LTE for the Internet of Things Commercial in confidence ComNets FFV Page 7

8 IoT Radio Requirements improved coverage (15/20 db more) Reduce energy consumption (10 years battery lifetime) Reduce device complexity (<5$ per module) Reduce signaling for infrequent and small data S1 Avoid impact to existing systems GSM Support massive number of devices Acceptable latency (UL Exception report in 10s) Operate in narrow spectrum WCDMA LTE LTE for the Internet of Things Commercial in confidence ComNets FFV Page 8 In addition for NB-IOT and EC-GSM

9 IoT Radio Requirements improved coverage (15/20 db more) Reduce energy consumption (10 years battery lifetime) Reduce device complexity (<5$ per module) Reduce signaling for infrequent and small data S1 Avoid impact to existing systems GSM Support massive number of devices Acceptable latency (UL Exception report in 10s) Operate in narrow spectrum WCDMA LTE LTE for the Internet of Things Commercial in confidence ComNets FFV Page 9 In addition for NB-IOT and EC-GSM

10 Improved Coverage Reduce data rate Relax acquisition time Cell-edge data rate in the order of ~1 kbps rather than ~1 Mbps UL & DL data channels Allow the UE to accumulate and/or attempt to decode subsequent transmissions Synchronization and broadcast channels Repeat transmission Power Boosting Repeat the transmission to allow energy accumulation at the UE UL & DL control channels, random access Mainly applicable to DL LTE for the Internet of Things Commercial in confidence ComNets FFV Page 10

11 IoT Radio Requirements improved coverage (15/20 db more) Reduce energy consumption (10 years battery lifetime) Reduce device complexity (<5$ per module) Reduce signaling for infrequent and small data S1 Avoid impact to existing systems GSM Support massive number of devices Acceptable latency (UL Exception report in 10s) Operate in narrow spectrum WCDMA LTE LTE for the Internet of Things Commercial in confidence ComNets FFV Page 11 In addition for NB-IOT and EC-GSM

12 Reduced Energy consumption Rel-12 UE power saving mode Periodic tracking area update (TAU) followed by a paging duration Otherwise power-off, UE not reachable, but still registered Rel-13 extended DRX cycles Connected mode DRX cycle up to 10.24s Idle mode DRX cycle up to 43.69min RRC_CONNECTED RRC Connection Release RRC Connection Establishment RRC_IDLE UE reachable NAS de-activates AS upon Active timer expiry NAS activates AS upon TAU timer expiry or UL Data POWER SAVING STATE UE unreachable LTE for the Internet of Things Commercial in confidence ComNets FFV Page 12

13 IoT Radio Requirements improved coverage (15/20 db more) Reduce energy consumption (10 years battery lifetime) Reduce device complexity (<5$ per module) Reduce signaling for infrequent and small data S1 Avoid impact to existing systems GSM Support massive number of devices Acceptable latency (UL Exception report in 10s) Operate in narrow spectrum WCDMA LTE LTE for the Internet of Things Commercial in confidence ComNets FFV Page 13 In addition for NB-IOT and EC-GSM

14 S1 enhancements RRC Resume/Suspend SGi P-GW Signaling reduction due to Store and re-use previous parameters for a subsequent connection setup RRC connection (Uu) S1AP S5 S1-U S1-MME UE association (S1AP) S1-U bearer context (S1-U) HSS S6a MME S11 S-GW S1AP S1-U RRC Uu PDCP RLC PDCP RLC RRC RRC MAC PHY S1AP S1-U LTE for the Internet of Things Commercial in confidence ComNets FFV Page 14

15 S1 enhancements Data-over-NAS SGi PGW Expected signaling reduction due to No need for data connection establishment Expected network cost reduction due to No need for User-plane nodes Dedicated core network for NB-IoT HSS S6a C-SGN S1-lite S-GW RRC Uu PDCP RLC PDCP RLC MAC PHY LTE for the Internet of Things Commercial in confidence ComNets FFV Page 15

16 IoT Radio Requirements improved coverage (15/20 db more) Reduce energy consumption (10 years battery lifetime) Reduce device complexity (<5$ per module) Reduce signaling for infrequent and small data S1 Avoid impact to existing systems GSM Support massive number of devices Acceptable latency (UL Exception report in 10s) Operate in narrow spectrum WCDMA LTE LTE for the Internet of Things Commercial in confidence ComNets FFV Page 16 In addition for NB-IOT and EC-GSM

17 Reduced Device Complexity LTE for the Internet of Things Commercial in confidence ComNets FFV Page 17 LTE Rel-8 Cat 1 LTE Rel-12 Cat-M0 LTE Rel-13 Cat M1 LTE Rel-13 NB-IOT DL peak rate 10 Mbps 1 Mbps 1 Mbps ~100 kbps* UL peak rate 5 Mbps 1 Mbps 1 Mbps ~20 kbps* DL rate in extreme cov. (MCL=164dB) ~3 kbps** UL rate in extreme cov. (MCL=164dB) ~0.3 kbps** Coverage enhancement 15 db 20 db Duplex mode Full Half or full Half or full Half UE bandwidth 20 MHz 20 MHz 1.4 MHz 200 khz Maximum transmit power 23 dbm 23 dbm ~20 dbm 23 dbm PSM Yes Yes Yes edrx Yes Yes RRC Connection Resume, DoNAS Yes,? Yes, Yes Supported frequency bands All All? 800/900MHz? Modem complexity relative to Cat-1 100% 50% 20-25% * Work in progress. Data rate above SNDCP in basic coverage (MCL=113 db). ** Work in progress. Data rate above SNDCP. (GERAN SI objective: 160 bps)

18 Summary 3GPP radio interfaces cover IoT market NB-IoT, LTE-MTC, EC-GSM, (UMTS) All driven by Ericsson Meeting all IoT requirements NB-IOT = 5G? LTE for the Internet of Things Commercial in confidence ComNets FFV Page 18

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