Dynamic Transmit Diversity Configuration for Multipath Interference
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Solution Overview
Problem
Wireless communication systems face challenges in maintaining RF signal quality due to multipath interference, which affects transmission delays and power levels in transmit diversity antenna systems, leading to poor signal reception and varying service quality across user devices.
Innovation Solution
A method and system that exchange wireless communications using a first transmit diversity configuration, receive multipath information from user devices, process this information to determine a second optimized transmit diversity configuration, and transfer this configuration back to the devices for improved RF signal quality and power management, specifically adjusting chip delays or time-based diversity configurations to mitigate multipath interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transmit diversity configuration is used to combat multipath interference, then signal quality improves, but transmission delays and power consumption increase
Solution Approach 1:
The patent implements dynamic adjustment of transmit diversity configurations based on real-time multipath information feedback. The system transitions from static to dynamic operation by continuously monitoring signal conditions and adapting chip delays and transmission parameters, allowing optimization between signal quality and transmission delay based on current network conditions.
Solution Approach 2:
The patent changes transmission parameters including chip delays and power levels based on processed multipath information. By adjusting these parameters dynamically, the system optimizes the trade-off between signal quality improvement and transmission delay, adapting the diversity configuration to minimize delays while maintaining reliable signal reception.
2Reliability
If transmit diversity configuration is adjusted to optimize signal quality, then RF signal quality improves, but power consumption increases
Solution Approach 1:
The patent adjusts power levels and transmission parameters based on processed multipath information to optimize the balance between signal quality and power consumption. By dynamically changing power parameters rather than maintaining constant high power, the system achieves reliable signal reception while reducing overall energy consumption.
Solution Approach 2:
The system uses feedback from multipath information to dynamically adjust transmission power and configuration. This feedback mechanism allows the system to optimize power consumption by transmitting at appropriate power levels based on actual signal conditions, avoiding unnecessary high power consumption while maintaining sufficient signal quality.
3Device complexity
If fixed transmit diversity configuration is used, then system complexity is reduced, but service quality varies across different user devices
Solution Approach 1:
The patent applies local quality by tailoring transmit diversity configurations to individual user devices based on their specific multipath conditions. Each user device receives customized chip delay and transmission parameters optimized for its location and environment, enabling differentiated service quality while managing system complexity through targeted adjustments rather than complete system redesign.
Solution Approach 2:
The system transitions from fixed to dynamic configurations, adjusting transmit diversity parameters in real-time based on user-specific multipath information. This dynamic approach enables adaptability across different user devices and conditions while maintaining manageable complexity through automated processing of multipath data and algorithmic optimization.
Data Source
AI summary
What is disclosed is a method of operating a wireless access system. The method includes exchanging wireless communications with a plurality of user devices using a first transmit diversity configuration, receiving multipath information from the user devices for the wireless communications, and processing the multipath information to determine a second transmit diversity configuration. The method also includes transferring an indicator of the second transmit diversity configuration to the user devices, and exchanging further wireless communications with the user devices using the second transmit diversity configuration.