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This article mainly explains "what are the advantages of LPWAN technology over other Internet of things connections". The content of the explanation is simple and clear, and it is easy to learn and understand. Please follow the editor's ideas to study and learn "what are the advantages of LPWAN technology over other Internet of things connections"?

What is LPWAN?

The first thing to understand is that LPWAN (low Power wide area Network) is not a standard. It is a broad term that covers proprietary and open source implementations and protocols that, as the name implies, share common characteristics:

Low power consumption: it can be used for many years with a small cheap battery.

Wide area: the scope of work in an urban environment is usually more than 2 kilometers.

The physical limitation of low power consumption and wide range is that the amount of data is small. Most LPWAN technologies can only send less than 1000 bytes of data per day or less than 5000 bits per second.

Benefits of LPWAN

The above features make LPWAN an excellent choice for IoT applications in the following categories:

Dense areas: cities or large buildings for smart lighting, smart grids, and asset tracking.

Long-term monitoring: long-term installed and monitored sensors and instruments (such as water meters, gas detectors, smart agriculture and remote door locks).

In short, LPWAN technology works well when devices need to send small data over a wide range while maintaining battery life for many years. This distinguishes LPWAN from other wireless network protocols such as Bluetooth, RFID, Cellular M2M and ZigBee, which have advantages in bandwidth and range, as shown below.

LPWAN and Honeycomb

Cellular network mainly suffers from insufficient battery life, and there may be a gap in coverage. Another difficulty is technology phase-out (when a technology is deliberately phased out): 30 million 2G endpoints in the United States have been orphaned by phase-out. Many Internet of things devices must remain on the network for 10 years. If the cellular network is at sunset and no longer supports the device, it makes no economic sense.

LPWAN and Cellular LPWA (NB-IoT)

The most striking aspect of cellular LPWA is still under development. As mentioned above in cellular networks, technological decline is a huge problem. Cat-0 was touted as a long-term solution, but eventually became a victim.

LTE-M, NB-IoT, EC-GSM, and 5G-IoT are being actively studied, but none of them are cross-compatible, and it is unclear whether they are suitable for long-term IoT solutions. AT&T and Verizon are now launching initial versions of LTE-M, so the market is definitely heating up.

LPWAN and Mesh network

Mesh networks like ZigBee are being used in Internet of things applications. In fact, many home automation systems deploy ZigBee, but ZigBee is not an ideal choice for LPWA applications. Mesh networks are only useful at medium distances and do not have the remote capabilities of LPWAN technology.

More importantly, the battery efficiency of the mesh network is not high, because each node must constantly receive and repeat adjacent RF signals. ZigBee or other mesh networks cannot fully meet the needs of LPWA applications when the sensors scale to tens of thousands.

LPWAN and Local RF

Native RF includes Bluetooth and NFC, but these options simply don't have a useful range for many IoT applications.

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