Terminal SFTD Measurement for Multi-Transmission Node Timing
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Solution Overview
Problem
Existing mobile communications systems lack a solution for System Frame Number and Frame Timing Difference (SFTD) measurement when transmission signals of a serving cell or Bandwidth Part (BWP) of the User Equipment (UE) are from multiple transmission nodes.
Innovation Solution
A method and device for performing SFTD measurement at a granularity of transmission nodes to obtain timing differences between specific nodes, improving accuracy in understanding timing differences between transmission nodes within a serving cell or BWP.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If SFTD measurement is performed at cell or BWP level (prior art), then the measurement covers the entire cell or BWP, but the measurement cannot capture timing differences between multiple transmission nodes within the same cell or BWP
Solution Approach 1:
The patent segments the SFTD measurement from cell/BWP level to transmission node level. By configuring separate measurement parameters for each transmission node (e.g., different SSB or CSI-RS resources), the system can independently measure timing differences between multiple TRPs within the same cell or BWP, thereby capturing granular timing information that was previously unavailable.
Solution Approach 2:
The patent introduces a new dimension of measurement granularity by adding transmission node identification to the existing cell/BWP level measurement framework. This dimensional extension allows the system to perform measurements not just across cells or BWPs, but also across multiple transmission nodes within them, enabling precise timing difference capture in multi-TRP scenarios.
2Adaptability or versatility
If SFTD measurement is performed for single transmission node (prior art), then the measurement configuration is simple, but the solution cannot handle scenarios with multiple transmission nodes
Solution Approach 1:
The patent creates a universal measurement framework that can handle both single and multiple transmission node scenarios. By designing measurement parameters that include transmission node identification and supporting multiple measurement objects, the system becomes adaptable to various deployment scenarios (single-TRP, multi-TRP, inter-cell, intra-cell) without requiring fundamentally different measurement mechanisms.
Solution Approach 2:
The patent introduces dynamic measurement configuration where the network can flexibly assign different measurement parameters to different transmission nodes based on actual deployment needs. The measurement configuration can be adjusted dynamically to support varying numbers of TRPs, different SSB/CSI-RS resource allocations, and different reporting requirements, making the system versatile across diverse scenarios.
Data Source
AI summary
A measurement method, a terminal device, and a network side device are provided. The method includes: in a case that at least two transmission nodes are configured for a first serving frequency of a terminal device, performing system frame number and frame timing difference (SFTD) measurement according to a first measurement parameter to obtain an SFTD measurement result, where the first measurement parameter is used to instruct to perform at least one of the following: measuring an SFTD value between a specific transmission node of the first serving frequency and a first network node, or measuring a timing difference between different specific transmission nodes of the first serving frequency.