What is LoRa ? What is LoRaWAN

A recent study showed that by 2020, 22 billion devices will be connected to one of the biggest IoT Networks. This IoT Network will be low cost, low bandwidth, and mostly deployed on license-free frequencies. Its main goal will be to ensure communication between devices, in a message-based context. The connectivity of all those devices will have to be compliant with a large number of constraints… Local Connectivity with no power requirement (WLAN, Wi-Fi, Bluetooth) Local Connectivity with low power requirement (ZigBee, [...]

How Wi-Fi Networks Works

Wi-Fi networks have no physical wired connection between sender and receiver by using radio frequency (RF) technology — a frequency within the electromagnetic spectrum associated with radio wave propagation. When an RF current is supplied to an antenna, an electromagnetic field is created that then is able to propagate through space. The cornerstone of any wireless network is an access point (AP). The primary job of an access point is to broadcast a wireless signal  that computers can detect and [...]

The difference between Lora and ZigBee

There are many wireless technologies used in the Internet of things, which can form LAN or wan. The WLAN technology mainly consists of 2.4GHz, WiFi, Bluetooth, Zigbee and so on. The wireless technology of Wan is mainly 2G/3G/4G and so on. These wireless technology, the advantages and disadvantages are very obvious, can be summarized as below. Before the generation of Area (Low Power Wide Network LPWAN), it seems that distance and low power consumption can only be chosen between [...]

The advantages of Zigbee

(1) Low power consumption: because of the low transmission rate of ZigBee, the transmit power is only 1mW, and the sleep mode is adopted, the power consumption is low, so the ZigBee device is very power-saving. It is estimated that ZigBee equipment by two No. 5 batteries can last up to 6 months to 2 years of time, which is unmatched by other wireless devices. (2) low cost: the initial cost of the ZigBee module is around $6, and it [...]

The difference between WiFi and ZigBee

Comparison and advantages of ZigBee-WiFi : Hardware memory requirements contrast: ZigBee:32~64KB+; WiFi:1MB+;   ZigBee hardware demand is low. Battery powered power on sustainable time: ZigBee:100~1000 days; WiFi:1~5 days;   ZigBee power consumption is low. Transmission distance contrast (general use, no high-power antenna launcher): ZigBee:1~1000M; WiFi:1~100M;   ZigBee long transmission distance. ZigBee disadvantage: Network bandwidth contrast: ZigBee:20~250KB/s; WiFi:11000KB/s;   ZigBee bandwidth is low; transmission is slow. Same point: 1. They Both are short-range wireless communication technologies; 2. all using the 2.4GHz band; 3. all using DSSS technology; Difference: 1. the transmission speed is different. ZigBee transmission is not high (<250Kbps), but [...]