时间:2022-03-18 19:52:36 浏览量:557
Why NB-IoT can achieve low power consumption
NB-IoT user terminals can work in power saving mode to reduce power consumption and prolong battery life. When the user terminal works in the power saving mode, similar to the shutdown of the device, it seems to be disconnected from the network, but the user terminal is still registered in the network and does not need to re-attach or re-establish a packet data network (Packet Data Network) connection.
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Low power consumption is an important indicator of IoT applications, especially for some devices and occasions where batteries cannot be replaced frequently, such as sensor detection devices scattered in a large area, they cannot be charged once a day like smartphones. , a battery life of up to several years is the most basic requirement. Under the premise that the battery technology cannot make a breakthrough, the battery power supply time can only be extended by reducing the power consumption of the device.
The energy consumed by communication equipment is often related to the amount of data transmitted or the communication rate, that is, the size of the data packet sent out per unit time determines the size of the power consumption. If the amount of data to be transmitted is small, the modem and power amplifier of the user equipment can be tuned to a very small level. NB-IoT focuses on applications such as large transmission interval, small data volume, small rate, and insensitive delay, so the power consumption of NB-IoT devices can be very small.
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