Terminal Reference Signal Multiplexing for 5G Positioning Overhead
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Solution Overview
Problem
In user-centric no-cell configurations for 5G radio communication, the increased number of beams transmitted by UE leads to higher overhead and power consumption, with a higher likelihood of transmitting reference signals in directions without a gNB, necessitating a reduction in these costs while maintaining coverage.
Innovation Solution
Implementing a terminal and base station with a transmission unit for reference signals used for purposes other than position measurement, and a control unit that assumes position measurements using these signals, allowing for reduced transmission of reference signals by using dynamic or alternative reference signals for specific purposes, such as RRM, L1-RSRP_SINR, and positioning measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the number of beams transmitted by the UE increases to cover the coverage area, then the coverage area is improved, but the overhead and power consumption increase
Solution Approach 1:
The patent applies multi-functionality by enabling reference signals to serve multiple purposes simultaneously. Specifically, reference signals transmitted for RRM measurements, L1-RSRP_SINR measurements, or other purposes are also utilized for positioning measurements. This allows the same signal transmission to fulfill both coverage/quality measurement functions and positioning functions, thereby maintaining coverage area without proportionally increasing power consumption for separate positioning signal transmissions.
2Area of stationary object
If the number of beams transmitted by the UE increases to cover the coverage area, then the coverage area is improved, but the overhead increases
Solution Approach 1:
The patent applies multi-functionality by enabling reference signals to serve multiple purposes simultaneously. Specifically, reference signals transmitted for RRM measurements, L1-RSRP_SINR measurements, or other purposes are also utilized for positioning measurements. This allows the same signal transmission to fulfill both coverage/quality measurement functions and positioning functions, thereby maintaining coverage area without proportionally increasing overhead for separate positioning signal transmissions.
3Measurement precision
If reference signals are transmitted for multiple purposes, then measurement accuracy is improved, but the transmission frequency increases
Solution Approach 1:
The patent applies multi-functionality by enabling reference signals to serve multiple purposes simultaneously. Specifically, reference signals transmitted for RRM measurements, L1-RSRP_SINR measurements, or other purposes are also utilized for positioning measurements. This allows the same signal transmission to fulfill both coverage/quality measurement functions and positioning functions, thereby maintaining coverage area without proportionally increasing overhead for separate positioning signal transmissions.
Data Source
AI summary
A terminal comprises: a transmission unit that transmits a reference signal used for a purpose other than a measurement related to position of terminal; and a control unit that assumes the measurement related to the position of terminal is performed using the reference signal.