Understanding Bluetooth and Wi-Fi Technologies

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Understanding Radio ⑦ | What Are Bluetooth and Wi-Fi Technologies

What Is Bluetooth Technology

Understanding Bluetooth and Wi-Fi Technologies

The so-called Bluetooth technology is actually a short-range (generally within 10m) wireless communication technology with a transmission rate of 1Mbit/s. By utilizing Bluetooth technology, communication between mobile communication terminal devices such as handheld computers, laptops, and mobile phones can be effectively simplified, and communication between these devices and the Internet can also be successfully simplified, making data transfer between these modern communication devices and the Internet faster and more efficient. In other words, Bluetooth technology allows mobile phones and computer devices to connect to the internet without the need for wired cables, enabling wireless internet access, and can connect various household appliances, consumer electronics, and automotive electronic devices into a personal area network (WPAN).

Understanding Bluetooth and Wi-Fi Technologies

“Bluetooth” originally referred to a king who unified Denmark in the 10th century, bringing together Sweden, Finland, and Denmark. The technology was named after him to symbolize the unification of fragmented situations.

In May 1998, five well-known manufacturers, including Ericsson, Nokia, Toshiba, IBM, and Intel, borrowed his name during the joint standardization activities for short-range wireless communication technology, signifying that this technology “unifies” global short-range wireless connection technologies. Its purpose is to provide a short-range, low-cost wireless transmission application technology and become an open standard for wireless data and voice communication. Soon, Bluetooth technology received responses and support from companies such as Microsoft, Motorola, Lucent, and Siemens, leading to the development of a large number of Bluetooth technology application products, sparking a “Bluetooth” craze worldwide.

Understanding Bluetooth and Wi-Fi Technologies

The development of Bluetooth technology has gone through three stages. The first stage is when Bluetooth products are used as accessories in high-end products with greater mobility, such as mobile phone headsets, laptop cards, or PC cards, or used in special requirements and special occasions. The second stage is when Bluetooth products are embedded in mid-to-high-end products, such as PDAs, mobile phones, desktop computers, laptops, etc. The third stage is when Bluetooth technology enters household appliances, digital cameras, and other various electronic products, making Bluetooth networks ubiquitous and beginning to popularize Bluetooth applications.

Understanding Bluetooth and Wi-Fi Technologies

One of the advantages of Bluetooth technology is “plug and play.” Bluetooth technology is specially designed with fast confirmation and hopping schemes to ensure link stability, allowing any Bluetooth device to establish a connection as soon as it discovers another Bluetooth device, without requiring any user settings. This gives Bluetooth technology a significant advantage in very noisy radio environments.

The second advantage of Bluetooth technology is the application of a globally unified frequency of 2.4GHz, eliminating the barriers of “national borders,” laying the foundation for Bluetooth technology to become a universally applied and established standard for wireless radio interfaces worldwide.

Understanding Bluetooth and Wi-Fi Technologies

Wi-Fi is an industrial standard for wireless network communication defined by the Institute of Electrical and Electronics Engineers (IEEE802.11), also known as wireless local area network, which is an industry term published by an organization called the Wireless Ethernet Compatibility Alliance (WECA). It is a short-range wireless transmission technology that enables access to the Internet over radio signals within a range of hundreds of meters. With the development of technology, the emergence of Wi-Fi standards has led to the current IEEE 802.11 standard being collectively referred to as Wi-Fi.

Understanding Bluetooth and Wi-Fi Technologies

Wi-Fi belongs to short-range wireless technology used in offices and homes, operating in the 2.4GHz frequency band, and can be used throughout homes, offices, and entire buildings. Wi-Fi transmission speeds are very fast, reaching 11Mbit/s, 22Mbit/s, and 54Mbit/s. Operators only need to set up Wi-Fi networks and connect to the Internet in crowded places such as airports, train stations, coffee shops, and libraries, allowing the Wi-Fi signals to cover a radius of tens to 100 meters, enabling users with Wi-Fi-enabled laptops or tablets to access the Internet at high speeds.

Understanding Bluetooth and Wi-Fi Technologies

Since the advent of Wi-Fi, wireless local area networks have made significant progress, and there is a rich variety of products based on Wi-Fi technology, making it necessary to address compatibility issues between products from different manufacturers. Currently, the Wi-Fi Alliance is responsible for product certification, and products that pass the Wi-Fi Alliance compatibility tests are labeled with the “Wi-Fi” logo and receive a “Wi-Fi” certificate.

Understanding Bluetooth and Wi-Fi Technologies

Bluetooth and Wi-Fi have become indispensable technological supports in modern social life.

Understanding Bluetooth and Wi-Fi Technologies

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Understanding Bluetooth and Wi-Fi Technologies

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