Beam Tracking Feedback Mechanism for 5G MIMO Resource Efficiency
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Solution Overview
Problem
In 5G communication systems using MIMO antennas, existing technologies face challenges in efficiently managing and tracking beams due to changes in beam characteristics, leading to reduced resource use efficiency and increased delays, especially at high frequencies like 30 GHz, where signal attenuation is high and the number of beams required increases, causing delays and inefficiencies in resource allocation.
Innovation Solution
A method and apparatus for beam-tracking and beam feedback operations in a beamforming-based system, where user equipment (UE) and evolved Node B (eNB) using MIMO antennas exchange beam information, allowing the UE to periodically measure and report beam data, and the eNB and UE select a restricted number of beams for efficient resource use, using a beam feedback procedure that triggers beam changes based on performance thresholds and resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beamforming is used in 5G communication systems to reduce signal attenuation and increase transmission distance, then the transmission distance and signal quality are improved, but the complexity of beam management and tracking increases
Solution Approach 1:
The patent implements a beam feedback mechanism where the UE measures beam quality metrics (such as RSRP, RSRQ, SINR) and reports them to the eNB. The eNB uses this feedback information to adjust and optimize beamforming parameters, enabling closed-loop beam management that maintains signal quality while reducing the complexity of manual beam tracking
Solution Approach 2:
The system enables autonomous beam tracking where the UE independently measures beam characteristics and triggers beam feedback when quality thresholds are met. This self-service approach allows the UE to autonomously manage beam quality without requiring continuous network intervention, reducing overall system complexity
2Area of stationary object
If the number of beams is increased to cover more directions at high frequencies, then the coverage area is improved, but the resource allocation efficiency decreases and delays increase
Solution Approach 1:
The patent segments the beam management process into distinct phases: beam sweeping for coverage discovery, beam measurement for quality assessment, and beam feedback for optimization. This segmentation allows the system to efficiently manage multiple beams by processing them in organized stages rather than simultaneously, improving resource allocation efficiency while maintaining broad coverage
Solution Approach 2:
The system implements periodic beam sweeping and measurement cycles where the eNB transmits reference signals in different beam directions at regular intervals. The UE measures these periodic signals and reports back when quality thresholds are met. This periodic approach ensures comprehensive coverage while preventing resource exhaustion from continuous beam management operations
3Reliability
If continuous beam tracking is performed to maintain connectivity in mobile environments, then the connection reliability is improved, but the signaling overhead and processing delays increase
Solution Approach 1:
The patent implements preliminary beam measurement and quality assessment before actual data transmission. The UE continuously monitors beam quality metrics and prepares beam feedback information in advance. When beam quality deteriorates below a threshold, the pre-prepared feedback is quickly reported to the eNB, enabling rapid beam switching without extensive processing delays during critical transmission moments
Solution Approach 2:
The system uses event-triggered beam feedback where the UE reports beam quality changes only when specific thresholds are violated (e.g., when signal quality drops below a certain level). This feedback mechanism maintains connection reliability by responding to actual degradation events while reducing unnecessary signaling overhead and processing delays that would result from continuous reporting
Data Source
AI summary
The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). A mobility application method of a user equipment (UE) residing in a system of wireless communication systems, which supports transmission/reception of data, using a beamforming, via multiple input multiple output (MIMO) antennas is provided. The method includes measuring beam measurement reference signals that a network transmitted using different transmission nodes and evolved NodeB (eNBs) and transmitting the measured information to the network in a system using a number of beams.