Shared Beamforming Signal Generation for Multi-User RF Transmission
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Solution Overview
Problem
Traditional beamforming transmission devices require multiple RF chains to support multiple user equipment, leading to increased design complexity and power consumption.
Innovation Solution
A beamforming transmission device and method that uses a baseband processing unit, radio frequency unit, and antenna array to generate a shared beamforming signal for multiple user equipment by adjusting gains and phases based on channel state information, allowing a single RF unit to support multiple users.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple RF chains are used to support multiple user equipment, then the number of supported users increases, but the design complexity and power consumption increase
Solution Approach 1:
The patent implements a shared beamforming structure where a single RF chain is configured to serve multiple user equipment through dynamic beamforming. The baseband processing unit generates multiple independent beamforming signals that are combined and transmitted through one RF chain, enabling one component to perform multiple user service functions simultaneously, thus reducing the total number of RF chains needed
Solution Approach 2:
The patent merges multiple beamforming signals from different user equipment into a single composite signal that is transmitted through one RF chain. The baseband processing unit combines the beamforming signals in the baseband domain before RF transmission, allowing multiple data streams to share a common RF path, thereby reducing hardware complexity and power consumption
2Adaptability or versatility
If multiple RF chains are used to support multiple user equipment, then the number of supported users increases, but the power consumption increases
Solution Approach 1:
A single RF chain is designed to handle multiple user equipment simultaneously through shared beamforming resources. The baseband processing unit dynamically allocates beamforming resources and generates combined signals that serve multiple users through the same RF transmission path, eliminating the need for separate RF chains for each user and thereby reducing overall power consumption
Solution Approach 2:
Multiple beamforming signals intended for different user equipment are merged into a single composite signal at the baseband processing stage. This combined signal is then transmitted through one RF chain, consolidating power consumption from multiple RF chains into a single lower-power configuration while maintaining support for multiple users
Data Source
AI summary
A beamforming transmission device includes a baseband processing unit, at least one radio frequency unit, and an antenna array unit. The baseband processing unit provides at least one data stream and generates a control signal according to channel state information of at least two pieces of user equipment, wherein the data stream includes data of at least two pieces of user equipment. The radio frequency unit receives the data stream signal and generates at least one radio frequency signal. The antenna array unit receives the radio frequency signal and the control signal and adjusts gains and phases of the antenna array unit according to the control signal such that the radio frequency signal can be formed as a shared beamforming signal for transmitting to at least two pieces of user equipment, wherein the shared beamforming signal includes the data of at least two pieces of user equipment.