With the increase in the number of machines connected to the Internet (Machine), it even exceeds the number of people using the Internet. What follows is that machine-to-machine (“M2Mâ€) communication is expected to surpass human-to-human communication for the first time in history in 2013. The communications machine camp is also expanding, including mobile resource management systems, instrumentation, robotics, vending machines, security systems, asset tracking systems, vehicles, emergency call systems, and more. Nowadays, low-cost computing devices of various mass productions are emerging one after another, running faster and faster, data collection capabilities are increasing, and wireless access to the Internet has become more convenient, and networking costs are getting lower and lower. Therefore, it is not surprising that the proportion of “dialogues†between machines will soon outweigh the dialogue between people. At the same time, however, IP address resources will be exhausted, and more than four billion IPv4 (Internet Protocol Version 4) addresses are now allocated. Does this mean that the machine has missed a good time? the answer is negative. In the future, the Internet will adopt IPv6 (Internet Communication Protocol version 6) supporting 2 to 128 power addresses, making global IP address allocation more than enough. Therefore, it is also expected that the fourth generation mobile network (4G) LTE can provide data, voice, video and other services based on IPv6. The driving force behind this network change is simply that all devices and applications that can access the Internet and benefit from it will eventually be connected to each other. This is why all kinds of "machines" such as mobile phones, laptops, tablets, cars and gaming devices have networking capabilities. Although these are the most obvious applications for mobile internet, humans are not the only users of the Internet, but also include intangible applications that are growing at a rapid rate: millions of machines are used every day for 24/TImes; 7 all-weather, hands-free data. Exchange, deductively a silent "dialogue." Simply plug in a low-cost, small (wireless) debug demodulator and any device can access the network. Applications that report location, speed, or navigation information also require Global Positioning System (GPS) or Global Navigation Satellite System (GNSS) receivers. Both components, plus the antenna, can be easily configured to smaller devices than mobile phones. At the moment, we can always see such situations in all areas of the electronics industry. However, depending on the application, some special conditions are required to equip the device with M2M communication capabilities. Whether considering the initial design, product life (the time the device can operate before making the necessary replacements), or geographic coverage (the initial design can only be used in one region, but now needs to be used in other regions) or upgraded with wireless networks These conditions need to be considered when compatibility (2G to 3G to 4G). Below are some of the key technical features to consider when designing an M2M application and how they will affect the design of a particular type of device. 1) Power consumption Charging intervals are one of the most important features for portable tracking devices, security or personal security devices. For example, if the tracker installed on the container needs to be recharged once a day, the interval is too frequent, because air or land transportation usually takes several days, and shipping takes several weeks. For consumer devices such as personal tracking or health monitoring and mobile phones with predetermined standards, the battery duration should be at least 3 days. When comparing the specifications of the modem and GNSS receiver for such applications, not only the running/standby power consumption, but also the power saving mode (such as the auto start function) and the smart power saving mode (such as no need to start the main processor) Automatic data logging function). Ideally, these components will be in the lowest power mode most of the time and will only be activated when necessary. 2) Cellular network support Where can the equipment operate? As the mobility of people and goods around the world increases, the ability of modems to operate in different regions becomes an important consideration (GSM is supported by 2 major bands worldwide; UMTS is supported by 6 bands; LTE supports more bands than 30). For such applications, it is important to be able to identify the operational areas of the equipment and anticipate future expansion of the operational area. With this requirement in place, the wireless modem that best matches the job task can be selected. For example, a resource management system that needs to monitor shipments across all regions of the world should be equipped with a quad-band GSM modem or a six-band UMTS modem. For devices that don't move very often (such as residential meters), just one single band is enough. Other applications may need to consider some additional factors. For example, a vending machine that is often not remembered can support "telephone dialing" at any time, but it must be equipped with a modem that can be operated or located in the area. 3) Operator certification 4) Upgradeability of wireless debug demodulator
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All wireless devices that use GSM, UMTS, or LTE communications must be authenticated by the carrier before they can access their network. Modems embedded in the device should also be certified by the operator to simplify the authentication process. You can confirm the modem authentication list in the running area of ​​the tracking device first, and then select the corresponding modem. Most modem vendors provide a list of carrier certifications on their websites. 
Although remote meter applications with only a small amount of data communication typically require GSM/GPRS, the allocation of GSM bands to 3G and 4G services is considered. As far as the automatic meter reading system is concerned, it is costly to install it on thousands of remote meters. Therefore, technology that looks to the future is a wise design. This means that whether you use a UMTS/HSPA modem or an LTE modem, or at least ensure that the hardware design is not out of date, the modem upgrade should be as cost-effective as possible, which in turn leads to the next feature. 