Positioning SRS Allocation Across SUL and Non-SUL Uplinks
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently utilizing location information provided by user equipment (UE) for positioning, particularly in determining the reception beam index and resource allocation for positioning reference signals, which affects the accuracy and efficiency of UE location estimation.
Innovation Solution
The method involves transmitting and receiving signals based on predefined conditions, including resource allocation on supplementary and non-supplementary uplink channels, using positioning sounding reference signals (SRS), and determining transmission power based on downlink reference signal strength and path loss, with the UE and base station exchanging configuration information and beam index information to optimize positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the UE transmits positioning SRS on the SUL, then the positioning accuracy is improved through better signal quality, but the device complexity increases due to additional resource allocation management
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the uplink carrier selection based on downlink signal quality measurements. The UE measures DL RS strength and compares it against thresholds to determine whether to transmit positioning SRS on SUL or non-SUL, thereby optimizing positioning accuracy while managing device complexity through adaptive parameter adjustment
Solution Approach 2:
The patent implements dynamics by enabling the UE to flexibly switch between SUL and non-SUL for positioning SRS transmission based on real-time channel conditions. The resource allocation is not fixed but dynamically adapted according to DL RS strength, allowing the system to respond to changing environmental conditions and optimize positioning performance
2Adaptability or versatility
If the UE uses multiple uplink carriers for positioning SRS, then the adaptability to different channel conditions is improved, but the loss of time increases due to additional measurement and decision processes
Solution Approach 1:
The patent applies preliminary action by having the UE continuously monitor and measure downlink reference signal strength in advance of positioning SRS transmission. This pre-measurement allows the UE to have channel quality information readily available when positioning SRS needs to be transmitted, reducing the decision time and enabling faster adaptation to channel conditions
3Use of energy by moving object
If the transmission power is determined using compensation value for SUL switching, then the power efficiency is improved, but the manufacturing precision requirements increase for power control
Solution Approach 1:
The patent implements feedback by using the measured downlink reference signal strength as input to determine the uplink transmission power. The compensation value for SUL switching is calculated based on actual channel conditions measured by the UE, creating a closed-loop feedback mechanism that optimizes power efficiency while adapting to real-time channel variations, thereby reducing stringent manufacturing precision requirements
Data Source
AI summary
Various embodiments relate to a next generation wireless communication system for supporting a data transmission rate higher than that of a 4th generation (4G) wireless communication system, and the like. According to various embodiments, a method for transmitting and receiving a signal in a wireless communication system and an apparatus for supporting same can be provided. Various other embodiments can be provided.