Terminal Device Antenna Panel Beam Selection
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Solution Overview
Problem
In cellular mobile communications, terminal devices with multiple receiving antenna panels face challenges in maintaining optimal radio quality due to varying combinations of antenna panels and receiving beams. This leads to a need for the base station to designate the appropriate combination of antenna panels and receiving beams for the terminal device, with a requirement for setting a default combination when no designation is provided.
Innovation Solution
A terminal device is equipped with multiple antenna panels, a reception unit, a selection unit, and a setting unit. The reception unit receives reference signals from the base station, the selection unit chooses the appropriate receiving beams, and the setting unit sets the combination of antenna panels and receiving beams based on the reference signals received. This allows the terminal device to maintain optimal communication when specific designations from the base station are absent.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the base station designates a specific combination of receiving antenna panel and receiving beam, then the radio quality is improved, but the communication overhead increases due to the need for signaling
Solution Approach 1:
The terminal device autonomously determines the default combination of receiving antenna panel and receiving beam by evaluating reference signal reception qualities, eliminating the need for base station signaling in default case. This self-service approach reduces communication overhead while maintaining optimal radio quality through local decision-making based on measured signal qualities.
Solution Approach 2:
The terminal device pre-determines the default combination of receiving antenna panel and receiving beam before actual data transmission based on reference signal measurements. This preliminary action allows the terminal to have ready-configured reception parameters, avoiding the need for real-time base station designation and reducing signaling overhead during active communication.
2Loss of information
If the terminal device autonomously selects receiving beams without base station designation, then the communication overhead is reduced, but the radio quality may deteriorate due to suboptimal selection
Solution Approach 1:
The terminal device uses feedback from reference signal reception quality measurements to autonomously select the optimal receiving beam and antenna panel combination. By continuously monitoring reference signal qualities and selecting combinations with the highest reception quality, the terminal ensures optimal radio quality while maintaining autonomous operation without base station designation.
Solution Approach 2:
The terminal device changes operational parameters (receiving antenna panel and receiving beam selection) based on measured reference signal qualities. By dynamically adjusting these parameters according to actual reception conditions, the terminal achieves optimal radio quality through autonomous parameter optimization without requiring continuous base station control.
3Reliability
If multiple combinations of receiving antenna panels and receiving beams are tested, then the optimal combination is found, but the time required for configuration increases
Solution Approach 1:
The terminal device performs preliminary testing and evaluation of multiple receiving antenna panel and beam combinations during initial access or configuration phases using reference signals. By completing this optimization work in advance, the terminal establishes default combinations that can be quickly applied during data transmission, minimizing configuration time impact on actual communication.
Solution Approach 2:
The terminal device evaluates multiple combinations of receiving antenna panels and beams to ensure optimal selection, even though this requires additional measurement and processing time. By performing thorough evaluation of available combinations based on reference signal qualities, the terminal identifies the best configuration, accepting the time investment as necessary for achieving optimal and reliable communication performance.
Data Source
AI summary
A terminal device includes a plurality of antenna panels, a reception unit, a selection unit, and a setting unit. The reception unit receives one or more reference signals from a base station via the plurality of antenna panels. The selection unit selects one or more receiving beams from among the received one or more reference signals. The setting unit sets a combination of a receiving antenna panel and the receiving beam to be used by the terminal device when receiving one or more pieces of control information transmitted from the base station (100), based on a combination of the receiving antenna panel and the receiving beam used at the reception of the one or more reference signals.