What are the different air packet formats in BLE? What are the common PDU commands? What is the difference between PDU and MTU? What is DLE? How does BLE implement retransmission? What is the principle of the BLE ACK mechanism? I hope this article can help answer these questions. Although the BLE air packet (also … Read more
Why Our Wearable Device Does Not Use Bluetooth (BLE) Protocol Introduction After 2010, with the promotion of low-energy Bluetooth protocol, the power consumption problem of traditional Bluetooth protocol has been greatly solved. Along with the development of smartphones, there has been a significant wave of smart hardware, including various wearable devices centered around smartphones, such … Read more
Why can the same smartphone connect successfully with some devices but fail with others? Why can the same device connect with some smartphones but not with others? Why does the same smartphone connect quickly with the same device at times and slowly at others? What is a Master? What is a Slave? What are Connection … Read more
Note: Table 1 was formulated by the Ministry of Industry and Information Technology of China in 1985, and Table 2 was formulated in 1992. It stipulates that the channel spacing for cordless phones is 25KHz, with a maximum transmission power of 50mW for landline phones and 20mW for mobile phones. The transmission categories are F3E; … Read more
In recent years, short-range wireless communication technologies have developed rapidly, greatly enhancing our work efficiency and convenience in life. Applications such as NFC door unlocking, Bluetooth wireless headphones, and Wi-Fi portable hotspots all rely on wireless communication technology. Currently, several mature wireless communication technologies include ZigBee, Bluetooth, infrared (IrDA), and wireless local area networks (Wi-Fi). … Read more
Since the AspenCore analyst team released the “Research Report on 30 Domestic Wireless Connection (Bluetooth/Wi-Fi/NB-IoT/LoRa) Chip Manufacturers” last year, there have been significant changes in wireless connection technology and market, such as the rapid penetration of WiFi 6, the application of Bluetooth LE Audio, and the emergence of ultra-wideband (UWB) technology and applications. In addition, … Read more
With the rapid development of domestic wireless communication and IoT sensing technologies, a large number of housing, hotels, commercial buildings, and office buildings have begun their intelligent upgrades, and people are slowly adapting to a more intelligent daily work and life. Not only in civilian applications, IoT technology is also gradually integrating into the industrial … Read more
Author: Gu Zhengshu EET Electronic Engineering Magazine Original Emerging markets such as wearable devices, smart homes, and industrial IoT are driving the development and popularity of wireless connection technologies, while also raising higher requirements for the reliability and security of wireless connection chips, modules, and terminal devices. This report selects four relatively common wireless connection … Read more
People often say that Bluetooth speakers are always Bluetooth devices, and compared to traditional speakers, they still have a long way to go in terms of sound quality. Even the most famous speaker brands can easily create a resistance to purchase in consumers when they see the word “Bluetooth” attached. So, in today’s world where … Read more
Convenient to carry, easy to wear, and free communication Bluetooth headphones are becoming increasingly popular Some friends even develop a reliance on them However, improper usage Can potentially harm your hearing How much do you know about Bluetooth headphones and usage tips? Today, I will talk about “The Things About Bluetooth Headphones” Do Bluetooth Headphones … Read more