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What is LTN?

This page compares LTN (Low Throughput Network) vs GSM vs PMR vs Zigbee vs Wireless M Bus and mentions difference between LTN,GSM,PMR,Zigbee and Wireless M Bus.

The full form of LTN is Low Throughput Network. It is a kind of wide area network(WAN) with characteristics different than existing RANs(Radio Access Networks) such as GSM, PMR(Private land Mobile Radio) etc. It supports coverage distance of about 40Km outside. It is suitable for M2M(Machine to Machine Communication) due to low throughput and low latency requirement.

Moreover LTN is ideal for M2M devices which requires few bytes of data transfer per day/week/month.

LTN Network

As shown in the figure, LTN network is composed of LTN end devices (LTN-ED) and LTN access points(LTN-AP). LTN network can interoperate with cellular networks such as GSM with backbone connectivity. A single LTN end device can be interfaced with more than one LTN APs as shown in the figure.

Following LTN interfaces are used between various LTN system entities:
A interface: Between LTN End Point and LTN Access Point
B interface: Between LTN AP and Back End system
C interface: Between Back End System and Customer Service Platform

Difference between LTN GSM PMR Zigbee Wireless M Bus

Following table compares LTN(Low Throughput Network) with existing cellular and personal area network technologies and mentions difference between them. It mentions comparison of LTN with GSM, PMR(Private land Mobile Radio), Zigbee(IEEE 802.15.4) and Wireless M-Bus. Security Authentication and cyphering is supported in all the mentioned wireless technologies.

Features LTN
(Low
Throughput
Network)
GSM PMR Zigbee Wireless
M Bus
Application LTN is used in
telemetry control, alarm,
sensing/tracking
GSM used for mobile
SMS and data applications,
used for telemetry and tracking
as well as control applications
Data over voice
channel and is used
by police
Home automation,
process automation,
metering
Smart meters
Typical bytes per day usage less than 200 bytes/day 1 SMS/day of
size 140Bytes,
less than 15 kBs/day
(GPRS)
50 bytes (1-2 Mob) About 150 KBytes/day less than 200 bytes/day
Data rate (payload) less than 10 to 100
bytes/sec, 50 Kb/sec
(max peak possible)
35 Kbps(GPRS) 500 bps to 4 Kbps 250 Kbps in
2.4GHz PHY,
20Kbps in 868MHz PHY
about 2.4 to 4.8 Kbps,
19.2 Kbps(Max)
Latency(Max) msec to sec sec(SMS),
640ms(ping)
few ms as per
data rate
250 sec for 2.4GHz,
786 msec for 868MHz
msec to sec
Coverage distance upto 10 to
12Km in city
up to 40 to 60 km in country side
3Km in the city upto 10 to
12Km in city
10 meters upto 1 Km in city
Frequency Band 868 to 915MHz,
433,868,915MHz
900KHz,
1800MHz
VHF,UHF 2.4GHz,
868MHz,
915MHz
169MHz
RF Budget link upto 170dB 145dB upto 170dB 115dB upto 150dB

What is Difference between

FIR filter Vs. IIR filter
difference between FDM and OFDM
Difference between SC-FDMA and OFDM
Difference between SISO and MIMO
Difference between TDD and FDD
Difference between 802.11 standards viz.11-a,11-b,11-g and 11-n
OFDM vs OFDMA
CDMA vs GSM
Bluetooth vs zigbee

RF and Wireless Terminologies


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