Terminal Reference Signal Measurement for Base Station Overhead Reduction
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Solution Overview
Problem
As the number of beams transmitted by a gNB increases, the overhead associated with transmitting reference signals also increases, leading to a higher possibility of transmitting beams in directions where UE does not exist, which is inefficient.
Innovation Solution
A terminal and base station system that uses a reference signal for purposes other than channel state information acquisition, allowing for reduced transmission of reference signals by assuming measurements are performed using a secondary reference signal, thereby optimizing beam transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the gNB transmits multiple beams to cover the coverage area, then the coverage is improved, but the overhead increases
Solution Approach 1:
The patent applies multi-functionality by enabling a reference signal to serve multiple purposes simultaneously. Specifically, a reference signal configured for a first purpose (e.g., positioning or beam management) is also utilized for a second purpose (e.g., channel state information acquisition). This allows the gNB to maintain comprehensive coverage with multiple beams while reducing overhead, as the same reference signal resources are leveraged across different measurement needs without requiring separate dedicated signals for each function.
2Area of stationary object
If the number of beams transmitted by the gNB increases, then the coverage area is improved, but the overhead of the gNB increases
Solution Approach 1:
The patent applies multi-functionality by enabling a reference signal to serve multiple purposes simultaneously. Specifically, a reference signal configured for a first purpose (e.g., positioning or beam management) is also utilized for a second purpose (e.g., channel state information acquisition). This allows the gNB to maintain comprehensive coverage with multiple beams while reducing overhead, as the same reference signal resources are leveraged across different measurement needs without requiring separate dedicated signals for each function.
3Area of stationary object
If the gNB transmits beams in all directions, then the coverage is improved, but the efficiency decreases due to transmitting in directions where UE does not exist
Solution Approach 1:
The patent applies feedback by utilizing measurement results from one purpose to inform transmission decisions for another purpose. When a UE performs measurements on reference signals for a first purpose (e.g., positioning) and reports results, the gNB uses this feedback information to determine whether to continue transmitting beams in specific directions. This allows the system to maintain coverage in directions where UEs exist while reducing or stopping transmissions in directions where no UEs are present, thereby improving transmission efficiency while preserving necessary coverage.
Data Source
AI summary
A terminal comprises: a reception unit that receives a reference signal used for a purpose other than an acquisition of channel state information; and a control unit that performs a measurement related to the acquisition of channel state information using the reference signal.