NB-IoT water meter power control optimization method, system and device and storage medium
A technology of power control and optimization method, applied in the field of Internet of Things communication, can solve problems such as affecting the accuracy of NB-IoT water meter power control, and achieve the effects of reducing power consumption, improving accuracy, and reducing block error rate
Active Publication Date: 2022-04-19
E SURFING IOT CO LTD
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Signal distortion causes an increase in the uplink block error rate BLER, which shifts the open-loop point P0 value of the network semi-static configuration in open-loop power control, thus affecting the accuracy of NB-IoT water meter power control
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[0066] S1031. When the compensation method is negative compensation, the water meter power control compensation is performed by the following formula:
[0067] P1=Pmax-Pue
[0068] Among them, P1 represents the transmission power after negative compensation, Pmax represents the maximum transmission power of the NB-IoT water meter, and Pue represents the power control compensation value;
[0069] S1032. When the compensation method is positive compensation, the water meter power control compensation is performed by the following formula:
[0070] P2=max{Pmax-Pue, P0+Pue+PL}
[0071] Wherein, P2 represents the transmit power after positive compensation, P0 represents the nominal value of the transmit power, and PL represents the path loss measured by the RRMB measurement module.
[0072] S104. Perform weighting processing on the OFDM symbols by using a preset scrambling sequence, so that the processed OFDM symbols are preferentially selected for uplink transmission.
[0073] ...
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The invention discloses an NB-IoT water meter power control optimization method, system and device and a storage medium, and the method comprises the steps: obtaining a waveform peak value of a water meter data packet, and determining a power control compensation value according to the waveform peak value; performing signal linearity judgment on the water meter data packet, and determining whether a compensation mode is positive compensation or negative compensation according to a judgment result; performing water meter power control compensation according to the power control compensation value and the compensation mode; and carrying out weighting processing on the OFDM symbols through a preset scrambling sequence, so that the processed OFDM symbols are preferentially selected to carry out uplink transmission. The power consumption of the water meter is reduced by increasing the uplink power control compensation amount caused by the state of the terminal, the open-loop nominal power value is optimized by reducing the downlink received signal level, the block error rate of water meter power control is reduced, and the accuracy of water meter power control is improved. The method can be widely applied to the technical field of Internet of Things communication.
Description
technical field [0001] The present invention relates to the technical field of Internet of Things communication, in particular to an NB-IoT water meter power control optimization method, system, device and storage medium. Background technique [0002] In order to save the overhead of small packet transmission, the NB-IoT network cancels the closed-loop control in the uplink power control, and only adopts the open-loop control. The terminal calculates the uplink open-loop power adjustment amount based on the downlink received signal level RSRP and the nominal power P0 (expected power at the network receiving end). Among them, the nominal power P0 is jointly set for the cell, and is semi-statically set by the network and delivered to the terminal, and the terminal measures the RSRP to calculate the path loss. The cost of NB-IoT water meters is relatively low, and it is generally equipped with a power amplifier with a relatively small nonlinear dynamic range. In order to ensu...
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IPC IPC(8): H04W52/10H04W52/14H04L27/26
CPCH04W52/10H04W52/146H04L27/2602H04L27/2614Y02D30/70
Inventor 李峰王志成王平平郭浩
Owner E SURFING IOT CO LTD