On June 15th, a notice on the comprehensive development of the development of mobile Internet of Things (NB-IoT) issued by the General Office of the Ministry of Industry and Information Technology was passed down in the circle of friends. The "Notice" calls for speeding up the landing of NB-IoT in China. It is clear that by the end of 2017, the NB-IoT base station of China's NB-IoT network will reach 400,000, and the total number of NB-IoT connections will exceed 20 million, achieving NB-IoT network. Coverage of major cities such as municipalities and capital cities.
By 2020, the scale of China's NB-IoT base stations will reach 1.5 million, and the total number of NB-IoT connections will exceed 600 million, achieving universal coverage and deep coverage for the whole country.
Today, a China Telecom's first tariff package for NB-IoT, let us see that the NB-IoT commercial era really kicks off! China Telecom's NB-IoT is not charged by the actual consumption of traffic, but by the number of connections. Since the NB-IoT scenario is supposed to cope with small traffic and low-rate scenarios, the revenue from the flow metering fee may be much lower than the connection-based billing, which will put more pressure on the operator's network construction investment return; Nor does it reflect the value of connectivity that the Internet of Things brings to customers, so this move is very reasonable.
Once, we also questioned how the 50 billion devices in the world will be interconnected in 2020? Because the current Internet intelligence is 20 billion connected, how to achieve the 30 billion connection? With the commercialization of NB-IOT and LORA technologies, we have seen that the Internet of Things connection has covered individuals, families, and inter-city areas. The last short board of the Internet of Things has been added, and the Internet of Things is just around the corner.
On the eve of the outbreak, we still talked about several key technologies of the Internet of Things. First we can look at the simple composition of an IoT system, as shown below
A basic IoT system consists of three parts, one is a sensor-led information collection system, one is a processing and transmission system, and the other is a cloud. In fact, in the last issue of the article we introduced the key components of the Internet of Things - sensor technology see "old machines can be turned into intelligent networking devices more than 100 years ago" so today we will talk about several other key technologies: processor , connectivity and cloud technology.
1. What kind of processor does the IoT terminal need?There is no doubt that the very low-power processor required by IoT terminals can achieve uA level during sleep. In addition, the processor needs to be able to process more sensor information. In fact, the user does not care about the ARM core. Or other cores, users care about the overall power consumption, so this year, a non-ARM core processor product sales are very good, but ARM core products have a wide ecosystem after all, so user development is not very difficult, as long as optimization Good to make very low power products, such as Smart Microelectronics has ultra-low power CortexM0 32-bit MCU MM32 series, also uses embedded Flash, easy to develop, high stability.
In view of the current development trend, the future IoT terminal needs a low-power SoC processor, which is to integrate the processor core and wireless connection technology and targeted hardware circuits, and present it on a SoC single chip. This can greatly reduce the size of the Internet of Things terminal.
At this stage, many companies also provide integrated modules, such as Shenzhen Xinke Communication Technology Co., Ltd. and Shanghai Shike Communication Technology Co., Ltd., which provide complete connection module products, which can realize long-distance connection and GPS module.
Second, licensed band wireless technology VS unlicensed band wireless technologyIn the current IoT connection technology, many people divide it from the perspective of LAN and WAN. Personally, it is considered that the wireless technology from the licensed band and the unlicensed band are more clearly defined. The licensed band wireless connection is NB-IOT and LTE-M. The main, mainly operator-led, non-licensed band wireless connection technology is mainly IEEE 802.11 / Wi-Fi, Bluetooth, Zigbee, LoRa, Sigfox, NFC and so on. Unlicensed band wireless technology is relatively early, and the industry chain is mature. Comparison of several IoT connection technologies.
From the current development point of view, both wireless technologies are being deployed. At the recent GSMA Global Mobile Internet of Things Summit held in Shanghai, the director of the GSMA IoT project said that the latest version of the LPWA (Low Power Wide Area Network) Rel.13 technology has experienced 9 months has been finalized, and the 2017 mobile Internet of Things LPWA entered the global market. At present, the mobile Internet of Things has been supported by 38 mobile network operators and 27 suppliers around the world. A total of 56 mobile IoT pilots have been set up worldwide, and multiple chip combination modules are now in commercial use.
However, operators are also pushing for NB-IoT (narrowband Internet of Things) and LTE-M technology upgrades, both of which use the globally unified 3GPP standard to extend the Internet of Things. The advantage of the licensed band wireless technology is that it can be upgraded by the operator's own base station, and the non-licensed band wireless technology needs to build the base station. In addition, the licensed band wireless technology can achieve the telecom-level security mechanism without interference, and the unlicensed band wireless. The technology is interfering because of the ISM band, and the security is compromised.
From the perspective of past development, if there is operator support, the technology business model is clear, quality and reliability are guaranteed. For example, operators in the 4G era chose LTE to defeat the pioneer WiMAX. Whether NB-IOT or LTE-M can defeat other unlicensed band wireless technologies in the 5G era remains to be seen.
However, it is an indisputable fact that the licensed band wireless technology and the unlicensed band wireless technology will coexist. After all, many application scenarios do not require the operator to license the band technology. Moreover, the unlicensed band wireless technology can make up for the blind area of ​​the licensed band wireless technology. For example, the connection technology provided by LPWA will supplement the traditional cellular and short-range wireless technologies such as Bluetooth and WiFi to meet the requirements of the Internet of Things application. This connection has a coverage distance of ten to several tens of kilometers and a battery life of more than ten years, which is the most promising technology for achieving low power, low cost and low throughput Internet.
3. What kind of things do we need?A few years ago, when we talked about the Internet of Things, we only understood that we connected devices to the Internet. Now, we know that IoT devices connected to the network will generate a lot of data. This big data is the value of the Internet of Things. For example, a car produces 4000 GB of data per day, a hospital produces 3000 GB of data per day, and an aircraft produces 40,000 GB of data per day! A lot of this data will be stored in the cloud. Analysis of these cloud big data will help us to achieve better driverlessness, better maintenance of aircraft, and better health care services. This is artificial intelligence. Therefore, in the Internet of Things era, our IoT cloud is amazing!
IoT devices are actually a complete information chain device from the end to the cloud. IoT devices without cloud in the future are unimaginable. This is also the main sign that smart devices are different from traditional hardware devices in the future.
At present, the world's seven largest cloud computing companies Google, Amazon, Microsoft, IBM, Alibaba, Tencent and Baidu all provide cloud-based big data services and artificial intelligence services, especially Baidu, although latecomer has already listed artificial intelligence as its strategy. . In the past, Baidu President Lu Qi explained the artificial intelligence architecture at the Baidu Technology Conference. Artificial intelligence technology will cover almost all scenarios of the Internet of Things.
Therefore, the future IOT cloud must support artificial intelligence technology, so that we can truly enjoy the convenience brought by the Internet of Everything.
But at this stage, local cloud service providers have just started on the IoT artificial intelligence service. Compared with Baidu and Amazon, Amazon has already provided mature voice-based interaction technology. Amazon cloud can also provide support for genetic testing. The artificial intelligence service of machine vision can provide similar services by accessing data, but domestic Baidu has launched voice interactive services, and other deep IoT artificial intelligence services have not yet been launched.
For local IoT enterprises, one strategy is to build a self-contained cloud, providing vertical big data analysis and artificial intelligence services. For example, the body-provided cloud service provides a large amount of body fat data analysis and services. In cooperation with health care companies, we will also provide more benefits from the detection of body fat to health care services.
In short, the Internet of Things era will spawn a large number of new service models and business models, which is a topic worth exploring, the fifth session of the ELEXCON Shenzhen International Electronics Show and the 6th Embedded Systems Exhibition on December 21, 2017. At the conference on IoT technology and applications, experts from Qualcomm, ARM, Huawei, and Dell will analyze the development of IoT technology and business models.
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