Multi-Antenna Transceiver Interference Management
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Solution Overview
Problem
Current MIMO technologies in multi-cell environments fail to effectively address interference between adjacent cells, limiting data rate and system performance due to the lack of consideration for interference in actual radio communication environments.
Innovation Solution
A radio transmitting and receiving apparatus with multiple antennas that estimates desired and interference channel information locally, allowing for independent transmission method determination and improved beamforming and user combination in multi-user and multi-cell environments, thereby reducing interference and enhancing system performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If frequency reutilization rate between cells is increased, then data rate is improved, but interference between adjacent cells increases
Solution Approach 1:
The patent converts interference from adjacent cells, which is traditionally a harmful factor, into useful information for transmission optimization. By estimating interference channel information from signals received from adjacent base stations, the system determines transmission methods that consider both desired signal strength and interference levels, effectively transforming interference into a parameter that guides beneficial transmission decisions
Solution Approach 2:
The system implements feedback by using signals received from adjacent base stations to estimate interference channel information, which then feeds back into the transmission method determination process. This closed-loop approach allows the transmitting terminal to continuously adapt its transmission strategy based on actual interference conditions from neighboring cells
2Productivity
If multiple antennas are used in MIMO technology, then data rate and reliability are improved, but interference between cells is not effectively addressed
Solution Approach 1:
The patent extends the conventional MIMO approach by changing the parameters considered in transmission method determination. In addition to desired channel information, the system now incorporates interference channel information from adjacent cells as an additional parameter, allowing for more comprehensive optimization of transmission strategies in multi-cell environments
Solution Approach 2:
The patent adds another dimension to the transmission optimization problem by considering spatial interference from adjacent cells. Instead of only optimizing for single-cell performance, the system now operates in an expanded parameter space that includes interference channels from multiple directions, enabling more sophisticated beamforming and transmission method selection
3Reliability
If transmission method determination considers interference from adjacent cells, then system performance is improved, but device complexity increases
Solution Approach 1:
The patent implements self-service by enabling each transmitting terminal to independently estimate its own interference channel information and determine its transmission method without requiring complex coordination with other terminals. The terminal uses signals it already receives from adjacent base stations to perform self-assessment and self-optimization of its transmission strategy
Data Source
AI summary
The present invention provides a radio transmitting and receiving apparatus having multiple antennas that can decrease an influence due to interference between cells that exists in a multi-cell environment, by using a transmission method that not only considers performance of a corresponding cell but also an influence due to interference on adjacent cells and an influence due to interference from the adjacent cells in a multi-user and multi-cell environment, effectively use limited radio resources, and increase a data rate of a radio communication system, and a method thereof.