LPWAN stands for Low Power Wide Area Network. This technology appeared in 2013 and is a type of wireless technology that can meet the needs of machine-to-machine communication and IoT devices.
LPWAN (Low-Power Wide-Area Network), also known as LPWA (Low-Power Wide-Area) or LPN (Low-Power Network, low-power network) The battery is the sensor of the power supply), which can use the low bit rate for long-distance communication wireless network. Low power demand, low bit rate, and timing can be used to distinguish LPWAN from wireless wide area networks. Wireless wide area networks are designed to connect enterprises or users, and can transmit more data but also consume more energy. The transmission rate of each channel of LPWAN is between 0.3 kbit / s and 50 kbit / s.
LPWAN can be used to build a private wireless sensor network, but it can also be a service or infrastructure provided by a third party, which allows the sensor owner to directly deploy the sensor without having to invest in the gateway Building.
However, when the GSMA Wireless Industry Association defined a set of standards to help network providers and operators meet their power consumption, network coverage, and specific costs of IoT devices, this technology began to gain attention around 2015. These standards include LTE-M and NB-IoT. The standard aims to add connectivity options for low-bandwidth and low-latency IoT devices. LPWAN has become the connection option for most IoT devices, and its adoption in the IoT domain is increasing. LPWAN technology has great advantages over traditional connection options, some of which will be discussed below.
Wide area coverage
LPWAN enables the communication distance between IoT devices to reach 3-20 kms. Considering the low power consumption requirements of LPWAN, this proves to be beneficial. Using low-power LPWAN, data can be transmitted over long distances in smart cities. LPWAN can be used for devices in services, such as smart cities and public transportation in surveillance domains, because the data of devices in these industries tends to be transmitted over long distances.
Low power consumption
The data transmitted by the IoT device will affect the power consumption of the device. One of the main advantages of using LPWAN is low power consumption. With LPWAN, when not using IoT devices, they can automatically enter sleep mode. Since the device consumes very little current when not in use, it helps to save power. Due to low power requirements and low usage, one can expect the battery of these IoT devices using LPWAN to last 5-10 years.
The use of LPWAN helps reduce the costs associated with IoT devices. Due to low power consumption requirements, IoT devices can run on low-cost batteries, thereby reducing the cost of IoT devices. The battery can also be used for 5 to 10 years, thereby reducing the maintenance cost of these devices. In addition, a small number of gateways are required to transmit data through LPWAN, which leads to a reduction in infrastructure costs. For example, although the entire city of Amsterdam has high-density buildings, only 24 gateways are needed.
LPWAN is expected to become an integral part of the IoT connection standard. Now there are questions about which LPWAN technology to use. There is no clear answer to this, but before deciding on a factor, we can consider factors such as the amount of data transferred, the degree of autonomy required, and the location of the IoT device.