SRS Power Control Based on PDSCH Scheduling Rate
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Solution Overview
Problem
In 5G communication systems, transmitting sounding reference signals (SRS) with high power to achieve downlink throughput gain results in excessive current consumption, even when the gain is not significant, and existing methods to restrict SRS transmission do not effectively address this issue.
Innovation Solution
An electronic device with multiple antennas and processors adjusts SRS transmission power based on the physical downlink shared channel (PDSCH) scheduling rate, either transmitting at a first or second power level depending on whether the PDSCH scheduling rate is within a specified range, thereby optimizing power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If SRS is transmitted with high transmission power, then downlink throughput gain is improved, but current consumption increases excessively
Solution Approach 1:
The patent changes the transmission power parameter of SRS based on the PDSCH scheduling rate. When the scheduling rate is low (below threshold), transmission power is reduced or SRS transmission is restricted. When the scheduling rate is high (above threshold), normal high power transmission is maintained. This dynamic parameter adjustment resolves the contradiction by adapting power consumption to actual throughput needs.
Solution Approach 2:
The patent introduces dynamic control of SRS transmission power based on real-time PDSCH scheduling rate conditions. The system transitions from static high power transmission to dynamic power adjustment, where the transmission behavior changes according to the scheduling rate threshold, optimizing the balance between throughput gain and power consumption.
2Use of energy by moving object
If SRS transmission is restricted to reduce current consumption, then power efficiency is improved, but downlink throughput gain may be compromised
Solution Approach 1:
The patent uses PDSCH scheduling rate as feedback to control SRS transmission behavior. The base station's scheduling decisions are monitored, and when the scheduling rate falls below the threshold, this feedback triggers reduced SRS transmission or restriction. This feedback mechanism ensures that SRS transmission is optimized based on actual downlink traffic conditions, maintaining power efficiency while preserving throughput when needed.
Data Source
AI summary
An example electronic device may include multiple antennas and at least one processor, wherein the at least one processor is configured to: identify a sounding reference signal (SRS) configuration received from a network; identify a physical downlink shared channel (PDSCH) scheduling rate corresponding to the electronic device; transmit, based on the PDSCH scheduling rate not being included in a first range, at least one SRS at the magnitude of first transmission power, in each of one or more resource for SRS signal transmission identified on the basis of the SRS configuration; and refrain from transmitting the at least one SRS in the one or more resources based on the PDSCH scheduling rate being included in the first range, or transmit the at least one SRS at the magnitude of second transmission power, in the each of the one or more resources.