LTE-M

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LTE-M or LTE-MTC ("Long-Term Evolution Machine Type Communication") is a type of low-power wide-area network radio communication technology standard developed by 3GPP for machine-to-machine and Internet of Things (IoT) applications. [1] [2] LTE-M includes eMTC ("enhanced Machine Type Communication"), also known as LTE Cat-M1, whose specification was frozen in June 2016 as part of 3GPP Release 13 (LTE Advanced Pro), [3] as well as LTE Cat-M2. [4]

Contents

Competing 3GPP IoT technologies include NB-IoT and EC-GSM-IoT. [5] The advantage of LTE-M over NB-IoT is its comparatively higher data rate, mobility, and voice over the network, but it requires more bandwidth, is more costly, and cannot be put into guard band portion of the frequency band for now. [6] Compared to LTE Release 12 Cat-0 modem, an LTE-M model is claimed to be 80% less expensive (in terms of the bill of materials), support up to 18 dB better coverage, and a battery lifetime that can last up to several years. [7] In March 2019, the Global Mobile Suppliers Association reported that over 100 operators had deployed/launched either NB-IoT or LTE-M networks. [8]

3GPP Narrowband Cellular Standards


[9] [10] 		LTE Cat 1LTE Cat 1 bis LTE-M NB-IoT EC-GSM-IoT
LC-LTE/MTCeeMTC
LTE Cat 0LTE Cat M1LTE Cat M2non-BLLTE Cat NB1LTE Cat NB2
3GPP releaseRelease 8Release 13Release 12Release 13Release 14Release 14Release 13Release 14Release 13
Downlink peak rate10 Mbit/s10 Mbit/s1 Mbit/s1 Mbit/s~4 Mbit/s~4 Mbit/s26 kbit/s127 kbit/s474 kbit/s (EDGE)

2 Mbit/s (EGPRS2B)

Uplink peak rate5 Mbit/s5 Mbit/s1 Mbit/s1 Mbit/s~7 Mbit/s~7 Mbit/s66 kbit/s (multi-tone)

16.9 kbit/s (single-tone)

159 kbit/s474 kbit/s (EDGE)

2 Mbit/s (EGPRS2B)

Latency50–100 msnot deployed10–15 ms1.6–10 s700 ms – 2 s
Number of antennas211111111–2
Duplex modeFull duplexFull or half duplexFull or half duplexFull or half duplexFull or half duplexHalf duplexHalf duplexHalf duplex
Device receive bandwidth1.4–20 MHz1.4–20 MHz1.4 MHz5 MHz5 MHz180 kHz180 kHz200 kHz
Receiver chains2 (MIMO)1 (SISO)1 (SISO)1 (SISO)1 (SISO)1 (SISO)1 (SISO)1–2
Device transmit power23 dBm 23 dBm 23 dBm20 / 23 dBm20 / 23 dBm20 / 23 dBm20 / 23 dBm14 / 20 / 23 dBm23 / 33 dBm

Deployments

As of March 2019 the Global Mobile Suppliers Association had identified: [8]

As of February 2022, GSMA had listed LTE-M as being launched on 60 commercial networks. [11]

See also

References

  1. ↑ "LTE-M – the new GSM".
  2. ↑ "eMTC (LTE Cat-M1)".
  3. ↑ "Standards for the IoT".
  4. ↑ "What is LTE Cat-M2?". everything RF. 2023-03-12. Retrieved 2024-11-02.
  5. ↑ "Extended Coverage - GSM - Internet of Things (EC-GSM-IoT)". gsma.com. GSMA. May 11, 2016. p. 1. Retrieved October 17, 2016.
  6. ↑ "Differences between NB-IOT and LTE-M". 3 May 2018.
  7. ↑ Saxena, Vidit; Bergman, Johan; Blankenship, Yufei; Wallen, Anders; Razaghi, Hazhir Shokri (2016). "Reducing the Modem Complexity and Achieving Deep Coverage in LTE for Machine-Type Communications". 2016 IEEE Global Communications Conference (GLOBECOM). pp. 1–7. doi:10.1109/GLOCOM.2016.7842206. ISBN   978-1-5090-1328-9. S2CID   5206557.
  8. 1 2 "Global Narrowband IoT – LTE-M networks". GSA. March 2019. Retrieved 25 March 2019.
  9. ↑ "Preliminary specification". 3GPP.
  10. ↑ Luo, Chao (March 20, 2017). "3GGP TS45.001: GSM/EDGE Physical layer on the radio path" (ZIPped DOC). 3gpp.org. 14.1.0. 3GPP TSG RAN WG6. p. 58. Retrieved May 27, 2017.
  11. ↑ "Mobile IoT Network Launches". Internet of Things. Retrieved 2023-03-19.
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