Uplink Beam Measurement for Non-Serving Cell Adaptability
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Solution Overview
Problem
Current uplink beam measurement technologies cannot establish an appropriate uplink beam pair between a terminal device and a non-serving cell, limiting service provision in communication systems.
Innovation Solution
The method involves configuring and transmitting a sounding reference signal (SRS) from a network device to a terminal device, enabling the terminal device to determine and transmit the SRS to a non-serving cell, allowing the non-serving cell to determine the optimal uplink beam based on reception power, and includes additional configuration information such as path loss reference signals and spatial relation data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If uplink beam measurement is performed only with serving cell, then device complexity is reduced, but adaptability to non-serving cells is insufficient
Solution Approach 1:
The terminal device performs uplink beam measurement with the non-serving cell in advance before actual service connection is established. This preliminary measurement enables the device to prepare appropriate beam configurations ahead of time, improving adaptability when switching to non-serving cell service without adding complex real-time measurement mechanisms.
Solution Approach 2:
The uplink beam measurement mechanism is extended to serve dual purposes: it functions for both serving cell beam management and non-serving cell beam preparation. By making the measurement capability universal across different cell types, the system achieves better adaptability without proportionally increasing device complexity.
2Measurement precision
If SRS resource is configured for non-serving cell, then measurement precision is improved, but loss of time increases
Solution Approach 1:
The SRS resource configuration for non-serving cell measurement is performed in advance during initial access or handover preparation phases. By completing the beam measurement configuration beforehand, the system achieves precise beam measurement when needed without incurring time delays during critical service transitions.
Solution Approach 2:
The SRS resource is configured to transmit periodically or semi-persistently for non-serving cell beam measurement. This periodic transmission pattern allows the system to maintain accurate beam measurements over time without requiring continuous configuration overhead, balancing measurement precision with time efficiency.
Data Source
AI summary
An uplink beam measurement method and includes: receiving configuration information, where the configuration information includes a sounding reference signal (SRS) corresponding to a non-serving cell.