Heterogeneous Multi-Antenna System Bandwidth Allocation
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Solution Overview
Problem
Massive Multiple Input Multiple Output (MIMO) systems face limitations in data throughput per user due to spatial multiplexing, and beamforming, while increasing throughput for one terminal, restricts others, necessitating a solution for improved data throughput with reasonable equipment costs and design efforts.
Innovation Solution
A heterogeneously equipped multi-antenna system with a first transceiver for low-bandwidth communication and a second transceiver for flexible high-bandwidth communication, allowing data rate-dependent selection and beamforming to optimize data throughput across multiple wireless terminals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If beamforming is used to improve data throughput for an individual wireless terminal, then data throughput for that terminal is improved, but data throughput for other terminals is restricted
Solution Approach 1:
The system segments the antenna array into multiple sub-arrays, each capable of independent beamforming operations. This allows simultaneous service to multiple terminals by different sub-arrays, resolving the contradiction between improving individual terminal throughput and maintaining versatility for multiple terminals.
Solution Approach 2:
The system dynamically configures beamforming parameters and antenna groupings based on real-time channel conditions and terminal requirements. This dynamic adaptation enables the system to optimize for individual terminals when needed while maintaining service to multiple terminals simultaneously, balancing throughput improvement with system versatility.
2Productivity
If high-bandwidth transceivers are used to provide high data rates to all wireless terminals, then individual data throughput is improved, but system cost and complexity increase
Solution Approach 1:
The patent applies local quality by equipping only specific antenna elements or sub-arrays with high-bandwidth transceivers, while other antenna elements use lower-complexity transceivers. This localized high-performance configuration provides high data rates to terminals that need them while keeping overall system complexity and cost manageable.
Solution Approach 2:
The system designs transceivers with multi-functionality, where a single transceiver can operate in different bandwidth modes depending on the service requirement. High-bandwidth transceivers can operate in both high-throughput mode and standard mode, allowing the system to provide high individual data throughput when needed while maintaining cost-effectiveness for standard services.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enables flexible and efficient data rate adjustment, providing high data rates to terminals with varying demands while reducing costs and complexity by using less expensive, lower-bandwidth transceivers for standard use and reserving high-bandwidth transceivers for high-demand situations, thereby optimizing the use of available data throughput.
Implementation Method 1
Beamforming in this context relates to controlling a phase and relative amplitude of a plurality of signals within the same frequency band, in order to create a pattern of constructive and destructive interference in such a way that signals form a spatial selective beam.
Data Source
AI summary
A multi antenna system, comprising a plurality of transceivers for an antenna array operable for communication with wireless terminals, wherein the multi antenna system comprises a radio controller, adapted to operate a first transceiver for radio communication within a first bandwidth, wherein the first transceiver is limited by hardware to radio communication within the first bandwidth, a second transceiver adapted for radio communication within a second bandwidth selectable from a plurality of bandwidths, a radio controller adapted to operate, depending on a data rate demand, either the first transceiver or the second transceiver or both for radio communication.