Due to coverage, power consumption, cost and other reasons, the current cellular network technology can not meet the LPWAN requirement well and eMTC technology has emerged.
Traditionally, people-to-people communications have been met, and the Internet of Things will further connect people with things, things and things. The essence of the Internet of things is based on the perception, acquisition and transmission. The data can be sensed and acquired either through the smart device or the monitoring device, or through the sensor-based real terminal, such as the daily water meter used by residents, after the water meter is connected , Greatly improve work efficiency but also for residents to provide convenience. It can be predicted that the Internet of Things will permeate all aspects of our work and life and create great social values.
Internet of Things is an inevitable trend, the future massive connection of the Internet of things will be widely used in everyday life such as pet tracking, elderly care, smart travel, or vertical industries such as industrial manufacturing, intelligent logistics and so on. These applications require broader and deeper coverage capabilities that can cover the basement, suburbs and other scenarios; lower power consumption, such as meter reading business, the use of battery-powered support for 10 years of life cycle; more large-scale connections and lower The cost of traditional LPWA. Due to coverage, power consumption, cost and other reasons, the current cellular network technology can not meet the LPWAN requirement well and eMTC technology has emerged.
eMTC is an important branch of Internet of Everything. Based on the evolution of LTE, eMTC has been tailored and optimized for lower cost in order to better adapt to the communication between objects and objects. The eMTC is deployed on a cellular network and its user equipment has direct access to existing LTE networks by supporting 1.4MHz RF and baseband bandwidth. eMTC supports peak rates of up to 1Mbps upstream and downstream to support rich and innovative IoT applications. Internet of Things, smart healthcare, smart home and other IoT applications will generate massive connections, far exceeding the communication needs of people, is an important strategic direction for operators to connect large targets, and eMTC is an emerging technology in the field of IoT, Wide support for low-power devices in the wide area cellular network will be connected. In March 2016, the 3GPP formally announced that eMTC related content has been accepted in R13. The standard has been officially released. In the future, the evolution of technologies and application scenarios will evolve as the LTE protocol evolves.
eMTC possesses the basic capabilities of LPWA. The first is broad coverage. In the same frequency band, eMTC has a gain of 15dB over existing networks, which greatly enhances the LTE network's deep coverage capability. The second is the ability to support massive connections. eMTC One sector can support nearly 100,000 connections; Third, lower power consumption, eMTC terminal module standby time up to 10 years; Fourth, lower module costs, large-scale connection will bring the module chip costs The rapid decline, eMTC chip target cost at 1 to 2 dollars.
eMTC also has three differentiating capabilities: First, the high rate of eMTC supports up to 1Mbps uplink and downlink peak rate, far more than the current mainstream GPRS, Zigbee and other Internet technology; eMTC higher rate can support richer things Second, mobility, eMTC supports the mobility of the connected state, the user can seamlessly switch things to protect the user experience; Third, positioning, TD-based eMTC can use the base station side of the PRS Measurement, positioning without additional GPS chip can be carried out position, low-cost positioning technology is more conducive to eMTC logistics tracking, cargo tracking and other scenarios popularity; Fourth, support for voice, eMTC evolved from the LTE protocol, Can support VoLTE pronunciation, the future can be widely used in wearable devices.
eMTC can be deployed directly based on existing LTE networks and co-located with existing LTE base stations. The advantages of low-cost and rapid deployment can help operators quickly capture the advantages of the market and expand their business boundaries. It can also help third-party vertical industries release more industry needs.
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