1. The difference between Bluetooth and WIFI a:
1. Bluetooth in the early days, also known as Bluetooth, is an emerging wireless communication technology is a standard wireless communication protocol, based on the transceiver chip of low-cost devices, close-range transmission, low power consumption. Is widely used in the Internet of Things smart home systems, smart wearable devices. Sunrun Technology is specialized in developing solutions for low power Bluetooth.
2, Wi-Fi for the IEEE definition of a wireless network communication industry standards, is a wireless network he is in the LAN inside the category refers to the "wireless compatibility certification" is actually a commercial certification, but also a wireless networking technology.
The difference between Bluetooth and WIFI:
1, Bluetooth uses frequency hopping spread spectrum, generally 1650 times per second, the 83.5MHz band will be divided into 79 band channels, and each moment only accounts for 1MHz of bandwidth. Modulation is GFSK, the classic Bluetooth is available at the same time for data and voice wireless communication, and Bluetooth transmission bandwidth is 1Mbps, his communication distance is generally 10 meters, in May 2016 launched the latest version of Bluetooth5.0 transmission distance can reach 150 meters. Bluetooth communication is mainly used to connect some external electronic devices, or close range data transmission.
2. The connection protocol used by WIFI is IEEE802.11b LAN protocol, the transmission range of WIFI is 120 meters, the transmission speed can reach a maximum of 11Mbps, using the direct sequence spread spectrum and QPSK or BPSK, the upper and lower bandwidth is 22MHz. it can mainly provide wireless Internet access business, so WIFI is often found in the need to carry out the networking on top of smart devices.
:Bluetooth is a new type of wireless communication technology, it can realize the short distance data exchange between personal domain and mobile devices, Bluetooth communication technology is in fact a global standard, it breaks the limitation of connecting all kinds of digital devices with wired cables, Bluetooth is mainly working in the IS band of 2.4Hz which is the global standard, that is Why Bluetooth is the global standard for wireless communication technology.
Bluetooth since version 4.0 is divided into "classic Bluetooth", "low-power BLE Bluetooth" and "high-speed Bluetooth", the classic Bluetooth including the old transmission protocols It supports video and audio transmission. Low-power (BLE) Bluetooth is a subset of version 4.0. Compared to classic Bluetooth, it has a brand new protocol stack that allows for fast and simple connectivity, and it is mainly used for applications that require extreme power consumption and are powered by small coin cell batteries. So low-power Bluetooth is very suitable for IoT applications.
What is WIFI?
WIFI's full name is Wireless Fidelity, also known as the 802.11b standard, which has the biggest advantage of allowing electronic devices to connect to the local area network (LAN) and high transmission speeds, usually using the 2.4G UHF ISM video band, connected to the network are generally password-protected, and also easy to be cracked by technical means. be cracked by technical means. So WIFI in terms of security performance or need to continue to improve, WIFI communication technology is actually a wired network signal into a wireless signal, the use of wireless routers to provide signal technology support thereby realizing cell phones, tablets, computers to connect to the Internet.