Additional SRS Power Control via RRC and DCI Parameters
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Solution Overview
Problem
Current wireless communication systems lack a solution for power control of additional SRS, leading to potential low signal quality and interference issues, which affect communication effectiveness and reliability.
Innovation Solution
A method for determining the transmitting power of an additional SRS using a power control parameter received by a terminal device, which includes parameters such as target receiving power, pathloss calculation compensation factor, and closed loop power control adjustments, configured through RRC signaling and indicated by DCI, allowing independent power control of additional and legacy SRS.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If additional SRS is introduced to increase coverage and capacity, then the coverage and capacity are improved, but power control capability is lost leading to low signal quality and interference
Solution Approach 1:
The patent applies parameter changes by introducing separate power control parameters (alphaSet, betaSet, deltaSet) specifically for additional SRS, allowing independent power adjustment of the additional SRS from legacy SRS. This enables optimization of the additional SRS power to achieve desired coverage and capacity while maintaining signal quality through proper power control.
2Productivity
If additional SRS and legacy SRS are transmitted in one TTI, then transmission efficiency is improved, but power control complexity increases
Solution Approach 1:
The patent applies segmentation by separating the power control parameters into distinct sets: first power control parameters for additional SRS and second power control parameters for legacy SRS. This segmentation allows independent power control of each SRS type while transmitting them in the same TTI, managing complexity through structured parameter organization.
Solution Approach 2:
The patent applies local quality by providing differentiated power control mechanisms tailored to specific SRS types. The additional SRS receives dedicated power control parameters (alphaSet, betaSet, deltaSet) while legacy SRS uses its own parameters, allowing each to be optimized for its specific transmission characteristics within the unified TTI framework.
3Device complexity
If no power control solution is provided for additional SRS, then system simplicity is maintained, but communication effectiveness deteriorates due to interference and low signal quality
Solution Approach 1:
The patent applies feedback through closed-loop power control mechanisms where the network device monitors the actual received power of additional SRS and adjusts the transmitted power accordingly. The power control parameters include feedback components (betaSet for target received power, deltaSet for power adjustment) that enable continuous optimization of communication effectiveness while maintaining manageable system complexity.
Data Source
AI summary
A network device, comprising: a memory, a processor and a program which is stored in the memory and executable on the processor, wherein the program, when executed by the processor, causes the network device to perform: transmitting a power control parameter, wherein the power control parameter is used for a terminal device to determine a transmitting power of an additional SRS.