Smart Antenna Platform Switching Between MIMO and Beamforming
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Solution Overview
Problem
Conventional WLAN systems face challenges in efficiently managing interference and adapting to changing channel conditions, leading to reduced data throughput and spectral inefficiencies, particularly in multi-user environments, as they often rely on either beamforming or MIMO approaches without the ability to quickly switch between them.
Innovation Solution
A smart antenna platform that includes a beamforming antenna array (BFAA) and a dipole antenna, coupled with switching devices and a processor, allowing for rapid selection between MIMO and beamforming configurations to optimize antenna patterns based on interference and user location, thereby providing real-time adaptation and effective customization of antenna arrays for indoor radio channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional beamforming antenna systems are used to improve spectral efficiency and data throughput, then directional RF patterns can be focused towards specific users, but the system becomes complex, large, and inefficient for indoor environments requiring directive antenna elements and active circuits
Solution Approach 1:
The patent extracts and removes the complex active circuits (amplifiers, phase shifting circuits) from the antenna system, retaining only the passive dipole antenna array structure. This extraction maintains beamforming capability through passive electromagnetic coupling while eliminating the complexity and inefficiency of active components.
Solution Approach 2:
The patent employs simple, inexpensive passive dipole antenna elements instead of complex directive antenna elements requiring active circuits. These simple antenna structures are easier to manufacture and deploy in indoor environments while achieving the desired beamforming effect through passive means.
2Adaptability or versatility
If WLAN systems use fixed antenna configurations (either beamforming or MIMO), then each configuration can be optimized for specific conditions, but the system cannot adapt to changing channel conditions and interference patterns in multi-user environments
Solution Approach 1:
The patent implements a dynamic antenna system where the processor can reconfigure the antenna array between MIMO and beamforming modes based on real-time channel conditions, user locations, and interference patterns. This dynamic adaptation allows the system to optimize data throughput for varying environmental conditions.
Solution Approach 2:
The patent designs a universal antenna platform that can perform both MIMO and beamforming functions using the same passive dipole antenna array. The system universally supports multiple operational modes (MIMO mode, beamforming mode, and hybrid modes) by reconfiguring which antenna elements are active and how they are coupled, eliminating the need for separate dedicated systems.
3Quantity of substance
If the number of users and user terminals increases to support higher capacity WLAN, then network coverage is improved, but interference increases and spectral efficiency decreases leading to lower data throughput for individual users
Solution Approach 1:
The patent segments the antenna array into multiple independently controllable dipole elements that can be selectively activated. The processor divides the antenna resources and configures different subsets of antenna elements to serve different users simultaneously, either through spatial multiplexing in MIMO mode or directional beamforming, thereby reducing interference and improving individual user throughput.
Solution Approach 2:
The patent applies local quality by creating directional RF patterns that focus energy towards specific target users while suppressing interference in other directions. Each beamforming operation tailors the RF pattern locally to the specific spatial location and channel conditions of the target user, improving signal quality and throughput for that user while allowing other users to be served simultaneously with minimal interference.
Data Source
AI summary
An apparatus comprising a first dipole antenna, a beamforming antenna array (BFAA), a first switch coupled to the dipole antenna, a second switch coupled to the BFAA, and a processor coupled to the first switch and the second switch, wherein the processor is configured to select between a multi-input, multi-output (MIMO) antenna configuration and a beamforming configuration by setting the states of the first switch and the second switch.