Beam Refinement Reference Signal for 5G Antenna Selection
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Solution Overview
Problem
In wireless communication systems, particularly in 5G networks, there is a need for efficient beam selection and refinement between base stations and terminals to optimize data transmission and reception efficiency, especially in IoT environments where beamforming techniques are used, but existing methods lack effective mechanisms for selecting the best beams and antennas.
Innovation Solution
A method and device for beam refinement using a beam refinement reference signal (BRRS) are introduced, where a base station generates and transmits BRRS to a terminal, and the terminal measures signal strength, selects the best beam, and feeds back the selection information to the base station, allowing for dynamic antenna and beam selection based on higher layer signaling and downlink control information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If beamforming techniques are used in 5G networks to mitigate path loss and increase transfer distance, then data transmission rate is improved, but the complexity of beam and antenna selection increases
Solution Approach 1:
The base station performs beam refinement and transmits beam refinement reference signals (BRRS) to terminals in advance before actual data transmission. The terminal measures these pre-transmitted signals to determine the best beam and antenna combination, eliminating the need for complex real-time selection during data transmission.
Solution Approach 2:
The terminal feeds back beam selection information to the base station based on measurements of the BRRS. This feedback mechanism enables the base station to adaptively adjust beams according to terminal position and channel conditions, simplifying the selection process while maintaining high transmission rates.
2Reliability
If multiple antennas and beams are used to optimize communication in IoT environments, then communication performance is improved, but the difficulty of detecting and measuring the best beam increases
Solution Approach 1:
A beam refinement reference signal (BRRS) is introduced as an intermediary to facilitate beam measurement. The BRRS serves as a dedicated reference signal that enables the terminal to measure and compare different beams systematically, making the detection process simpler and more reliable compared to using standard reference signals.
3Productivity
If dynamic beam selection is implemented between base station and terminal, then data reception efficiency is improved, but the loss of time for beam selection and measurement increases
Solution Approach 1:
Beam refinement reference signals are transmitted and measured in advance during a beam refinement phase before actual data transmission begins. This preliminary beam selection ensures that when data transmission starts, the optimal beam is already established, minimizing time loss during actual communication.
Data Source
AI summary
The disclosure relates to a communication technique, which is a convergence of IoT technology and 5G communication system for supporting higher data transmission rate beyond 4G system, and a system for same. The disclosure can be applied to smart services (e.g., smart homes, smart buildings, smart cities, smart cars or connected cars, health case, digital education, retail businesses, security- and safety-related services and the like) on the basis of 5G communication technology and IoT-related technology. Disclosed are a device and a method enabling explicit or implicit indication of beam selection in order to select a beam between a terminal and a base station in a wireless communication system using a beamforming technique, and enabling selection of a beam in correspondence with same.