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Introduction to the basics of lorawan and Lora

Source: unknown Editor: admin Time: 16:46, May 14, 2019

Lpwan or LPN, full name of low power wide area network or lowpower network, refers to a kind of wireless network. This kind of wireless network emphasizes low power consumption and long distance, and is usually used for the networking of battery powered sensor nodes. Because of its low power consumption and low rate, this network is quite different from other wireless networks (such as WiFi, Bluetooth, etc.) for commercial and personal data sharing. In application, lpwan can be set up as a private network by concentrator, or it can be connected to public network by gateway.
 

The relationship between lorawan and Lora
 

Because of the similar names, many people confuse lorawan with Lora. In fact, lorawan refers to the MAC layer networking protocol. Lora is just a physical layer protocol. Although the existing lorawan networking basically uses Lora as the physical layer, the lorawan protocol also lists that GFSK can be used as the physical layer in some frequency bands. From the perspective of network layering, lorawan can use any physical layer protocol, and Lora can also be used as the physical layer of other networking technologies. In fact, there are several competing technologies using lorawan in the physical layer.
 

 The relationship between lorawan and Lora
 

Lora is a kind of lpwan communication technology. It is a kind of ultra long distance wireless transmission scheme based on spread spectrum technology adopted and promoted by Semtech company of the United States. This scheme changes the previous tradeoff between transmission distance and power consumption, and provides users with a simple system that can realize long-distance, long battery life and large capacity, and then expand the sensor network. At present, Lora mainly operates in the global free frequency band, including 433 / 868 / 915MHz, etc.
 

Lora network is mainly composed of terminal (LORA module can be built in), gateway (or base station), server and cloud. Application data can be transmitted in two directions. Parod has the ability to construct Lora network. Lora module, gateway and cloud platform are all mature.
 

 Lora network
 


Lora technology can be used in wireless AMR, Internet of things sensors, smoke detection, gas detection, traffic and access control and other fields with the characteristics of low power consumption and high penetration at low speed. In terms of AMR, 7 million gas meters will be replaced in Beijing from 2016 and will be completed within three years. It can be foreseen that Lora technology may break out on a large scale in the field of automatic meter reading and enter the practical field.
 

 application area
 

Other technologies of lpwan
 

It is also a high power consumption of sig-100 micro network. Currently, sigfox's network covers 10 major cities in France, Spain, the Netherlands and the UK.
 

Weightless: weightless actually includes three protocols. The initial protocol is weightless-w, which aims to make full use of the white spectrum of radio and television (tvws). However, the global focus is not on developing the availability of blank spectrum, so the protocol has been shelved until the channel is available. As an open protocol, weightless allows developers to use the resources of specific suppliers or network service providers. Every company can use weightless technology to develop low-cost base station and terminal equipment free of charge. Therefore, it has become a technology with commercial prospects after Lora and sigfox.
 

Lte-m: lte-m is a special lpwan Technology launched by Huawei based on 3GPP cat. 0 protocol. In terms of technology, lte-m standard is specially designed for the Internet of things, which can reduce the transmission power consumption by 20dbm, which will cover the deep of the building.
 

Main exhibits: industrial communication data transmission module, data transmission radio station, routing ad hoc network module, ZigBee smart home module, Lora / lorawan communication module, nb-iot communication module, 4G Lora acquisition concentrator gateway, Internet of things cloud platform, wireless security alarm system, water and gas meter low power consumption meter reading system, Agricultural Internet of things management system and other related products and solutions. You need to know more about Jiexun Yilian company. Welcome to visit the company website 100pour100soie.com