Optimistic about the Internet of Things applications market, early estimates of strong demand for network equipment construction, science and technology manufacturers have been actively involved in the development of application of communication technology, including application optimization of IoT low-power wireless LAN technology developments, not accidentally become This wave of Internet of Things application technology competition focus ...

Low-power wireless communication technology, in addition to the existing programs more mature low-power Bluetooth, low-power Wi-Fi, or the Internet of Things has a very wide range of ZigBee communication technology, in fact, IoT applications developed for low-power Consumption of wireless LAN solutions technology, in the Internet of Things application market even more noticeable.

IoT applications prefer LPWAN communication technology

LPWAN communication technology with a wider range of wireless transmission distance, but also take into account the battery-powered sensing module terminal required low-power performance, so much the development of the Internet of Things developers look forward to different technical camps in the telecommunications technology rival in the convergence of the semiconductor In the short term, efforts were made to release technology standards and accelerate the test to grab the mainstream status of IOT Technologies.

The LoRa Alliance grabbed a food-networking communication initiative with dominant initiatives such as Microchip starting production of the RN2483 LoRa communication module in 2015 and the RN2483 wireless transmission using the 868MHz unlicensed application band while complying with the LoRaWAN v1.0 protocol specification to build long Up to 10 miles of M2M (Machine to Machine) machine for low speed wireless transmission applications, if the device is powered by battery power, but also provide relatively long use of power backup.

LoRaWAN standard for targeting IoT application planning

Compared with the existing home or industrial wireless communication technology, LoRaWAN standard is aiming at IoT application planning. The technology can realize long-distance M2M wireless data transmission data link and low-speed data data transmission communication based on low transmission power consumption. The battery is the main source of IoT sensing terminal equipment. The power supply can even last up to ten years. With the addition of phase-based IoT applications, networking and terminal expansion capabilities of LoRaWAN, it can also be configured with LoRaWAN gateways Density sensing terminal deployment.

Taking Microchip's RN2483 LoRaWAN function module as an example, thanks to the built-in LoRaWAN protocol stack in the module, the RN2483 can quickly complete the required functions for the on-line deployment and develop the corresponding link requirements that support the LoRa Alliance infrastructure such as convergence LANs or Integrated with the telecom carrier's network, the journey can cross-town or even cover low-power WAN services across the country.

LoRaWAN features both energy-saving and long-haul wireless transmission applications

Early IoT application developers usually can only design many compromise designs for sensing terminal development. For example, to develop a sensing terminal that supports long-distance wireless transmission, the running power consumption requirement of the terminal device must be abandoned; and the terminal Efficient battery performance, only low-power, limited by the transmission distance of wireless communications technology solutions.

However, the development goals of wireless data transmission distance and battery life performance can be improved by introducing a communication scheme for the LoRaWAN low power consumption wide area network, establishing a sense of high scalability, practicing longer transmission distance, lower power consumption and lower cost Measuring terminals and even building related IoT applications also eliminates the need for repeaters and gateway extras to extend and extend the wireless reach for building and deploying additional gateways.

In addition to Microchip's active involvement in the LPWAN IoT solution applications, STMicroelectronics actively positions itself in the LPWAN communications technology market after joining the LoRa consortium. In addition to STMicroelectronics LPWAN communications products will be developed with Semtech design, STMicroelectronics addition to the LPWAN IoT applications will actively introduce micro-controller integrated LoRaWAN low-power wireless WAN solutions for wireless transmission technology, but also plans to jointly promote with Semtech LoRa technology to extend LoRaWAN wireless Communication technology solutions into the different needs of the integration of the Internet of Things, industrial control wireless sensor terminal applications.

Weightless-P supports bidirectional transmission

Weightless technology is another important wireless communication application solution of LPWAN communication technology. The Weightless SIG, which led the development of Weightless technology, also actively released more abundant functions to attract the favor of the application market by the end of 2015. For example, Weightless-P introduced new technology Based on wide area IoT-based higher connection extension terminal application requirements support, with the establishment of an important bidirectional wireless transmission link support, high-speed data transfer rate capability (transmission performance can be dynamically adjusted, 200bps ~ 100kbit / s rate for wireless data transmission ), While Weightless-P expands functionality based on cellular web application technology and even offers higher-capacity transmission support than existing LPWAN applications.

Weightless-P is an Open Architecture-based LPWAN communication technology standard. The Weightless-P is a sub-GHz band operation-free function that can be used without a license. It uses Frequency Division Multiple Access (FDMA) with TDMA (Time Division Multiple Access) modulation to operate in the unlicensed sub-GHz ISM white space band. Wireless data transmission, application support through open standards and longer distance transmission, redefinition of IoT connectivity with key parameters to provide IoT applications with low complexity, long battery life, high reliability, long transmission range and high security Open communication technology standards.

Since the Weightless-P standard is designed to address the relatively harsh conditions of transmission, it is designed to meet the requirements of the environment. It supports mobile devices powered by battery power in the range of 2km and two-way wireless data communication with other devices in wireless applications.

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