Terminal Uplink Duration Control for Multi-Slot Channel Estimation
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Solution Overview
Problem
Existing radio communication systems face challenges in efficiently performing channel estimation of uplink channels like PUSCH across multiple slots due to the need for maintaining continuity of power and phase, which is crucial for effective coverage enhancement in 5G and beyond.
Innovation Solution
A terminal and radio communication method that repeatedly transmits uplink channels in a specific duration greater than or equal to a plurality of slots, with a control unit determining the duration based on the number of transmissions or slots allocated, and controls frequency hopping to maintain power and phase continuity for joint channel estimation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the terminal repeatedly transmits the uplink channel in a specific duration greater than or equal to a plurality of slots to enable joint channel estimation, then the channel estimation efficiency is improved, but the device complexity increases due to the need to determine and control the specific duration
Solution Approach 1:
The control unit automatically determines the specific duration based on pre-configured parameters (number of transmissions or number of slots allocated) without requiring manual intervention or complex external control. The terminal serves itself by using its own transmission parameters to define the duration, simplifying the control mechanism while enabling joint channel estimation across multiple slots.
2Ease of operation
If the terminal determines the specific duration based on the number of transmissions or slots allocated, then the ease of operation is improved, but the duration determination flexibility is reduced
Solution Approach 1:
The control unit uses a universal determination method that works for multiple scenarios (different numbers of transmissions, different slot allocations) through a single consistent rule. The same determination logic applies whether the specific duration is based on transmission count or slot allocation, providing both simplicity and broad adaptability across various operational contexts.
3Measurement precision
If the terminal controls frequency hopping to maintain power and phase continuity, then the channel estimation accuracy is improved, but the device complexity increases due to additional control requirements
Solution Approach 1:
The frequency hopping control is designed to maintain continuity of power and phase across multiple slots, ensuring that the useful action of channel estimation can proceed without interruption. By maintaining these continuities, the system enables accurate joint channel estimation while the control mechanism itself remains relatively simple, as it only needs to manage the hopping sequence rather than complex adjustments.
Data Source
AI summary
A terminal repeatedly transmits an uplink channel in a specific duration greater than or equal to a plurality of slots, and controls transmission of the uplink channel. When the specific duration is not indicated, the terminal determines a length of the specific duration on the basis of a number of transmissions of the uplink channel or a number of slots allocated for the uplink channel.