Various types of wireless communication technologies support devices without cable connection to realize data communication between devices or between devices and serial servers, all through various protocols. There are many different types of wireless communication technologies that are widely used in hardware products in the fields of Internet of Things (IoT) and device-to-device (M2M) communications. The IEEE has seven 802.15 technical task groups (standards). These 802.15 task groups include: WPAN/Bluetooth, Coexistence (Network Coexistence), High Rate WPAN, Low Rate WPAN, Mesh Networking, Local Area Networks, and Visible Light Communications. Each of these wireless transmission protocols has its own unique advantages and limitations.
IoT Transport Protocol Application
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 the physical layer transmission of LoRa 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 that has become an important branch of the IoT network. The NB-IoT module is based on a 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, it 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
A WiFi module is a wireless module that uses 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 users' mobile phones, tablets, and portable computers, such as various voice systems. Bluetooth Low Energy (BLE) modules have less power than standard Bluetooth modules and are often used in IoT applications such as fitness bracelets, smart watches, or other small wearable hardware devices.
