Adaptive Control Parameters for Mobile Station Receiver Sensitivity
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Solution Overview
Problem
Conventional wireless telecommunications networks face difficulties in maintaining signal quality and transmit power levels for mobile stations with varying receiver sensitivities, leading to inadequate signal strength and increased error rates, especially in mobile-to-mobile communications.
Innovation Solution
Adaptive selection of quality-control and power-control parameters based on mobile station receiver sensitivity, including adjusting target Frame Error Rates (FER) and maximum transmit power levels, to ensure consistent signal quality across different receiver sensitivities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the same target FER is used for all mobile stations, then the control system is simple and easy to operate, but mobile stations with varying receiver sensitivities experience inadequate signal quality and increased error rates
Solution Approach 1:
The patent applies local quality by customizing control parameters (target FER and maximum transmit power levels) according to each mobile station's specific receiver sensitivity characteristics. Instead of using a uniform target FER for all mobile stations, the system determines individual receiver sensitivities and selects appropriate quality-control and power-control parameters for each mobile station, thereby optimizing signal quality for devices with varying receiver capabilities while managing system complexity through automated parameter selection.
2Reliability
If transmit power levels are increased to compensate for low receiver sensitivity, then signal quality improves, but energy consumption increases and interference to other users increases
Solution Approach 1:
The patent employs parameter changes by dynamically adjusting quality-control parameters (such as target FER) and power-control parameters (such as maximum transmit power levels) based on the mobile station's receiver sensitivity. This allows the system to optimize the balance between signal quality and energy consumption by selecting appropriate parameter combinations rather than simply increasing power for all low-sensitivity devices, thereby reducing unnecessary energy consumption and interference while maintaining adequate signal quality.
Data Source
AI summary
During a communication session, a first BTS transmits a first forward link signal that is received by a first mobile station, a second BTS transmits a second forward link signal that is received by a second mobile station, the first mobile station transmits a first reverse link signal that is received by the first BTS, and the second mobile station transmits a second reverse link signal that is received by the second BTS. One or more control parameters for the forward and/or reverse link signals are selected based on a receiver sensitivity of the first mobile station and/or second mobile station. In one example, a target error rate of the first reverse link signal and a maximum transmit power level of the second forward link signal are selected based on the receiver sensitivity of the second mobile station.