A summary of the characteristics of the five wireless transmission protocols of the Internet of Things

LoRa wireless transmission protocol

LoRa is the abbreviation of Long Range (long distance), which belongs to one of the wireless communication technologies. The transmission rate is relatively low. The LoRa module wireless technology has the characteristics of long distance, low power consumption, low cost and multiple nodes.

The LoRaWAN protocol is a set of transmission protocol standards based on LoRa's physical layer transmission and mainly based on the data link layer. Corresponding to the MAC layer in the OSI seven-layer model, LoRaWAN eliminates the incompatibility of specific hardware, and has both Features such as multi-channel access, frequency switching, adaptive rate, channel management, timing transmission and reception, node access authentication and data encryption, and roaming are provided.

NB-IOT narrowband transmission agreement

The Nbiot narrowband transmission protocol is a cellular-based Narrow Band Internet of Things (NB-IoT) technology, which has become an important branch of the IoT network. NB-IoT is based on cellular network and only consumes about 180KHz of bandwidth, and can be directly deployed in GSM, UMTS and LTE networks to reduce deployment costs and achieve smooth upgrade functions.

IEEE 802.15.4: ZigBee Protocol

ZigBee technology is an open global standard wireless transmission protocol, which is specially designed for M2M networks. This technology not only has low cost and low power consumption, but also has the characteristics of low delay and low duty cycle, which allows the product to maximize the life of its power supply battery. It is an ideal technical solution for many industrial technologies. In addition, the ZigBee module protocol provides 128-bit AES encryption, which supports Mesh ad hoc networks and allows network nodes to be connected together through multiple paths of wireless transmission.

The most common IoT application scenario of ZigBee modules is the smart home in the field of wireless transmission. The technology can connect multiple devices together at the same time, making it ideal for home networking environments, where users can communicate with each other between devices such as smart locks, lights, robots, and thermostats, and add controllers for real-time control Wait.

IEEE 802.11: WiFi Module Communication Protocol

WiFi modules are wireless modules that use radio waves (RF) to enable mutual communication between two devices. This technology is often used to connect devices such as computers, tablets and mobile phones to routers to achieve the purpose of surfing the Internet. In fact, it can also be widely used for connection between any two hardware devices.

IEEE 802.15.1: Bluetooth module and BLE transport protocol

Bluetooth modules and Bluetooth Low Energy (BLE) wireless transmission are wireless technologies used to transmit data over short distances. It is often used to connect small smart devices such as mobile phones, tablets and portable computers, such as various voice systems. Bluetooth low energy modules (BLE) have less power than standard Bluetooth modules, and are often used in fitness bracelets, smart watches or other wearables. Small hardware device.#iot#ZigBee#lora#Bluetooth