Base Station Antenna Panel Coherence Signaling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In LTE and NR communication systems, base stations transmit reference signals without considering the arrangement of antenna panels, leading to unnecessary signal processing on terminal devices due to quasi-co-located signal characteristics from multiple antenna panels.
Innovation Solution
A communication device and method where the base station acquires and transmits similarity information about the beam characteristics of its antenna panels, allowing the terminal device to selectively receive signal groups based on this information, reducing unnecessary processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the base station transmits multiple signal groups from multiple antenna panels facing the same direction, then the coverage and signal redundancy are improved, but the terminal device performs unnecessary signal processing on quasi-co-located signals
Solution Approach 1:
The base station performs preliminary classification of antenna panels into coherent and non-coherent groups before signal transmission. By pre-identifying which antenna panels produce quasi-co-located signals, the base station can inform the terminal device in advance, allowing the terminal to skip redundant processing of coherent panels and focus only on non-coherent panels, thus resolving the contradiction between signal redundancy and processing load
Solution Approach 2:
The base station provides feedback information to the terminal device regarding the coherence relationships between different antenna panels. This feedback mechanism enables the terminal to adapt its signal processing strategy based on the actual antenna panel configuration, processing only those signal groups that provide unique information while skipping redundant processing of quasi-co-located signals from coherent panels
2Measurement precision
If the terminal device processes all signal groups from multiple antenna panels, then the measurement precision is improved, but the processing time and energy consumption increase
Solution Approach 1:
The invention extracts and identifies the essential subset of signal groups that contain unique beam information by classifying antenna panels into coherent and non-coherent groups. The terminal device is instructed to process only the non-coherent signal groups, extracting the necessary measurement information while discarding redundant processing of coherent signal groups, thus reducing processing time without sacrificing measurement precision
Solution Approach 2:
The invention changes the processing parameter by dynamically adjusting which signal groups require terminal processing based on the coherence relationship between antenna panels. By modifying the processing scope parameter according to the antenna panel configuration information provided by the base station, the system achieves efficient beam determination with reduced processing time and energy consumption
3Device complexity
If the base station transmits signal groups without considering antenna panel arrangement, then the system simplicity is maintained, but unnecessary signal processing occurs on the terminal side
Solution Approach 1:
The invention introduces an intermediary information element (antenna panel coherence relationship information) that the base station transmits to the terminal device. This intermediary information acts as a guide, enabling the terminal to efficiently determine which signal groups require processing without increasing overall system complexity. The added information overhead is minimal compared to the significant reduction in terminal processing load achieved
Data Source
AI summary
A communication device (200) includes an acquisition unit (242) and a reception unit (243). The acquisition unit (242) acquires similarity information indicating the similarity of the beam characteristics of the transmitting antenna panel in a plurality of signal groups transmitted from a base station (100). The reception unit (243) selects and receives a signal group to be received, from among the plurality of signal groups, based on the similarity information acquired by the acquisition unit (242).