Choose LoRa Ultrasonic Water Meter Or LoRaWAN Ultrasonic Water Meter?

    In today's society, wireless network technology is rapidly developing, and the Internet of Things technology has also adopted many wireless network communications. Now, let's learn about LoRa communication, LoRaWAN communication, and wireless ultrasonic water meter manufactured based on these technologies.

    The LoRa water meter uses LoRa communication, which is a low-power wide area network communication technology that creates long-distance communication connections through physical layer local area network wireless modulation technology. Divided by protocol layer, it is a physical layer protocol. The characteristics of LoRa ultrasonic water meter include long-distance, low power consumption, low cost, anti-interference characteristics, low speed, and small data transmission. LoRa networking application: LoRa adopts TMD networking method, commonly known as time-sharing networking. LoRa operates in the global free frequency band and is more suitable for dedicated networks as it operates on a local area network.

    The LoRaWAN water meter uses LoRaWAN communication, and LoRaWAN (Long Rang Radio Wide Area Network) is a communication protocol and system architecture designed for the LoRa long-distance communication network, which is based on LoRa's low-power wide area network. Divided by protocol layer, it is a Media Access Control (MAC) layer protocol. The LoRaWAN ultrasonic water meter adopts an open, cloud based protocol designed and maintained by the LoRa Alliance, which enables devices to communicate wirelessly with LoRa. In essence, LoRaWAN adopts LoRa wireless technology and adds network components to it. It is a more advanced communication protocol realized by LoRa communication technology. It organizes terminal equipment into a star network, which can realize network access management, data encryption, rate control, etc. Suitable for public wide area networks.

    Usage scenario: LoRa is a physical layer transmission technology, which is a wireless transmission module that includes two parts: transmission and reception. The two parts can be transmitted through an ad hoc network. For some small  projects with less than a thousand terminals, LoRa ultrasonic water meters can be used for point-to-point communication, and simple private protocols can meet the needs with low costs. LoRa networking communication can also be applied in places without a network. However, there are higher requirements for security and compatibility with other LoRaWAN products. When the number of terminals is in the thousands to tens of thousands, it is difficult to achieve this by relying solely on LoRa, which requires the use of LoRaWAN ultrasonic water meters for network communication.

    The LoRaWAN network architecture divides network entities into four categories: End Nodes, Gateway, LoRaWAN Server, and Application Server

    The working modes of terminal nodes defined by the LoRaWAN protocol are divided into three categories, namely Class A, Class B, and Class C. Terminal nodes with suitable working modes can be selected according to the actual application scenario requirements.

    The LoRaWAN water meter terminal equipment has two network access methods: OTAA and ABP. OTAA terminals have higher security compared to ABP terminals, and the vast majority of them are connected to the network through OTAA in actual use.

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