Sidelink Resource Allocation Using Power-Compensated RSRP
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Solution Overview
Problem
In conventional sidelink mobile communication, there is a lack of effective methods for UE to select resources while minimizing interference from other UEs during sidelink communication.
Innovation Solution
The proposed method involves terminal measuring the signal strength from adjacent terminals, compensating for measurement inaccuracies due to power control, and allocating resources based on valid measurement values to minimize interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If terminal measures signal strength from adjacent terminal for resource allocation, then resource allocation efficiency is improved, but measurement precision deteriorates due to power control variations
Solution Approach 1:
The patent changes the measurement parameter from raw signal strength to compensated signal strength by introducing a power control adjustment value. The terminal compensates the measured signal strength of the adjacent terminal using the power control adjustment value to obtain a compensated signal strength value, which accurately reflects the actual received signal level despite power control variations.
Solution Approach 2:
The patent replaces direct physical signal strength measurement with a calculated compensated value. Instead of relying solely on raw measurement, the system uses mathematical compensation based on power control adjustment values to derive the effective signal strength, substituting mechanical measurement with computational correction.
2Device complexity
If terminal uses raw signal strength measurement for resource allocation, then device complexity is reduced, but interference from adjacent terminals increases
Solution Approach 1:
The patent transforms the raw signal strength parameter into a compensated signal strength parameter by applying power control adjustment values. This parameter transformation enables the terminal to account for power control variations, thereby reducing interference from adjacent terminals while maintaining manageable device complexity.
3Ease of operation
If terminal does not compensate for power control in measurement, then ease of operation is improved, but resource allocation reliability deteriorates
Solution Approach 1:
The patent introduces a compensated signal strength parameter that incorporates power control adjustment values. This parameter change maintains ease of operation by using existing measurement capabilities while improving reliability through mathematical compensation that accurately reflects the actual received signal level from adjacent terminals.
Solution Approach 2:
The patent implements feedback by using the power control adjustment value (which represents the difference between target and actual received power) to compensate the measured signal strength. This feedback mechanism ensures that resource allocation decisions are based on accurate signal strength information that accounts for power control variations.
Data Source
AI summary
According to one disclosure of the present specification, provided is a method for performing communication with a second UE (user equipment) by a first UE. The method can comprise the steps of: receiving control information from a third UE; receiving a sidelink signal from the third UE; measuring reference signal received power (RSRP) of the sidelink signal on the basis of the control information; calculating effective RSRP on the basis of the control information and the measured RSRP; and allocating a resource for communication with the second UE on the basis of the effective RSRP, wherein the control information can comprise information relating to transmission power of the third UE.