WCDMA Link Balance Detection Using RSCP and Tx Power Quotient
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Solution Overview
Problem
In mobile communications systems, particularly in WCDMA, there is a lack of defined methods to detect link balance between uplink and downlink coverage, leading to potential defects in cell coverage quality due to varying signal strengths and interference.
Innovation Solution
A link balance detecting device and method that sets a minimum receiving signal code power (RSCP) and maximum terminal Tx power, calculates a link balance detection quotient, and compares measured values to detect defects in uplink and downlink coverage, using system information from base stations to maintain signal balance and prevent interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If signal transmission is performed in mobile communication system, then communication service is provided, but link balance defect occurs due to varying signal strengths between uplink and downlink
Solution Approach 1:
The patent changes the parameter of signal power by setting minimum RSCP and maximum terminal Tx power, and calculating a link balance detection quotient to detect and maintain proper link balance between uplink and downlink, preventing coverage defects
Solution Approach 2:
The patent implements a feedback mechanism where the link balance detection quotient is calculated based on measured RSCP and terminal Tx power, then compared against a reference value to determine whether link balance is proper, defective, or severely defective, enabling continuous monitoring and adjustment
2Measurement precision
If path loss checking is performed to detect link balance defect, then coverage quality can be monitored, but troubleshooting complexity increases
Solution Approach 1:
The patent introduces a link balance detection quotient as an intermediary parameter that simplifies the detection process. Instead of directly analyzing complex path loss and signal strength variations, the system calculates this quotient by comparing minimum RSCP with maximum terminal Tx power, providing a straightforward metric for link balance assessment
Data Source
AI summary
A method of detecting a link balance of coverage of a down link and an up link in a WCDMA system is disclosed. The method includes setting a minimum receiving signal code power (RSCP) by using system information received from a base station, setting a maximum terminal Tx power for transmitting radio waves to the base station from a communication terminal according to the minimum RSCP, setting a reference value of a link balance detection quotient for detecting whether the up link and down link coverage has a defect by calculating the minimum RSCP and the maximum terminal Tx power, measuring a RSCP and a terminal Tx power from the communication terminal, and detecting the balance of the down link and up link coverage by comparing the reference value of the link balance detection quotient with a value calculated according to the measured RSCP and terminal Tx power.