Base Station Antenna Selection for Power Optimization
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Solution Overview
Problem
Wireless communication systems using multiple antennas face inefficiencies in signal transmission when a station is at the edge of the base station's coverage area with low signal quality, as existing methods do not adapt antenna usage effectively to improve power distribution.
Innovation Solution
A base station dynamically switches between using multiple antennas and a single antenna for transmission based on signal quality, adjusting power levels to optimize communication by employing a first mode with multiple antennas for good conditions and a second mode with a single antenna for poor conditions, where the single antenna power level equals the sum of the multiple antennas' power levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple antennas are used for all transmissions, then spatial diversity and coverage are improved, but power distribution efficiency deteriorates when signal quality is low
Solution Approach 1:
The system dynamically switches between single-antenna and multi-antenna transmission modes based on real-time signal quality conditions. When signal quality is good, multiple antennas are used for spatial diversity; when signal quality is poor, the system transitions to single-antenna mode with adjusted power levels to optimize power distribution efficiency.
Solution Approach 2:
The invention changes the transmission parameters (number of active antennas and power levels) based on signal quality conditions. By adjusting these parameters dynamically, the system achieves both improved communication reliability through spatial diversity when conditions are good and optimized power efficiency when conditions are poor.
2Productivity
If multiple antennas are used with equal power levels, then spatial multiplexing capacity is improved, but effective power utilization deteriorates when signal quality is low
Solution Approach 1:
The system applies different power levels to different antennas based on local signal quality conditions. When signal quality is poor, the system concentrates power on a single antenna rather than distributing it equally across multiple antennas, thereby optimizing effective power utilization for the specific transmission conditions.
Solution Approach 2:
The power distribution strategy dynamically adapts to signal quality conditions. The system transitions from equal power distribution across multiple antennas (for spatial multiplexing) to concentrated power on a single antenna (for effective power utilization), based on real-time channel conditions.
3Power
If a single antenna is used for edge users, then power efficiency is improved, but adaptability to different signal conditions deteriorates
Solution Approach 1:
The system dynamically adapts the number of active antennas based on signal quality conditions. For edge users with poor signal quality, the system uses a single antenna with optimized power levels to improve power efficiency. For users with good signal quality, the system transitions to multiple antennas to maintain adaptability and exploit spatial diversity, thereby achieving both power efficiency and adaptability.
Solution Approach 2:
The transmission system is designed to perform multiple functions by switching between single-antenna and multi-antenna modes. This multi-functionality allows the system to optimize for power efficiency when needed while maintaining adaptability to different signal conditions through the ability to switch to spatial multiplexing mode when conditions improve.
Data Source
AI summary
Systems and methods of controlling transmission of communications from a base station to a wireless communication station are provided. When the signal quality of communications between the base station and the wireless communication station are above a predetermined signal quality level, multiple antennas are employed for transmitting such communications. When the signal quality of transmissions by the base station to the wireless communication station are below a predetermined signal quality level, a single antenna is employed for transmitting such communications.