MIMO Sector Selection for Noise Interference Reduction
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Solution Overview
Problem
Wireless communication using Multiple Input Multiple Output (MIMO) antennas is hindered by noise sources, which existing technologies fail to adequately address, particularly in selecting optimal channel configurations and antenna orientations for improved performance.
Innovation Solution
A system and method that select channels and initiate transmissions to MIMO-capable devices using overlapping directional antennas as MIMO antennas, forming MIMO physical and virtual sectors to enhance communication performance by reducing noise interference, and switching between different MIMO sectors based on environmental conditions and performance metrics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If MIMO antennas are used to improve wireless communication performance, then spatial diversity and redundant signals are achieved, but noise sources interfere with the communication
Solution Approach 1:
The patent segments the wireless communication space into multiple MIMO sectors, each with different antenna configurations and beamforming patterns. This segmentation allows the system to isolate and manage noise interference in specific spatial directions while maintaining reliable communication in other sectors, thus resolving the contradiction between achieving spatial diversity and dealing with noise sources.
Solution Approach 2:
The patent applies local quality by configuring different antenna elements and beamforming weights for different MIMO sectors based on local noise conditions. Each sector is optimized with specific antenna orientations and signal processing parameters tailored to its local electromagnetic environment, allowing the system to maintain high reliability in low-noise sectors while mitigating interference in noisy sectors.
2Reliability
If multiple MIMO sectors are created to provide spatial diversity, then communication performance is improved, but system complexity increases
Solution Approach 1:
The patent implements dynamic MIMO sector selection and configuration, where the system adaptively adjusts which MIMO sectors are active based on real-time channel conditions, noise measurements, and traffic demands. This dynamic approach allows the system to maintain improved communication performance while reducing complexity by deactivating unnecessary sectors during low-traffic or high-interference periods.
Solution Approach 2:
The patent changes key parameters such as antenna beamwidth, sectorization patterns, and beamforming weights based on environmental conditions and performance metrics. By dynamically adjusting these parameters, the system can optimize communication performance without permanently maintaining complex multi-sector configurations, thus resolving the contradiction between performance improvement and complexity reduction.
3Object-affected harmful factors
If channel selection is performed to optimize MIMO performance, then noise interference is reduced, but additional processing time and complexity are required
Solution Approach 1:
The patent performs preliminary channel sounding and noise characterization during idle periods or low-traffic intervals, storing the results for later use. This preliminary action allows the system to have channel and noise information ready before actual data transmission begins, reducing the processing time required during active communication while still achieving noise interference reduction through informed channel selection.
Data Source
AI summary
A system, method, and computer program product is provided to select at least one channel based on one or more channel characteristics and initiate a first transmission to a first multiple-input-multiple-output (MIMO)-capable portable wireless device, and further initiate a second transmission to a second multiple-input-multiple-output (MIMO)-capable portable wireless device, such that at least a portion of the first transmission occurs simultaneously with at least a portion of the second transmission and both occur via a first wireless protocol; and is further configured to initiate a third transmission to a third multiple-input-multiple-output (MIMO)-capable portable wireless device via a second wireless protocol including a 802.11n protocol, where the first wireless protocol includes another 802.11 protocol other than the 802.11n protocol.