SB-FD Slot Selection for Repeated Uplink Transmission
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Solution Overview
Problem
In full duplex (FD) wireless communication systems, the overlap of uplink transmission resources with non-uplink subband resources leads to unclear operations between base stations and user equipment (UE), necessitating a clear definition of available slots for efficient resource utilization and accurate communication.
Innovation Solution
A method is provided to determine available slots by excluding slots with overlapping uplink and non-uplink subband resources, ensuring proper resource allocation and reducing ambiguity in UE operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If full duplex operation is performed with overlapping uplink and non-uplink subband resources, then resource utilization is improved, but operation clarity between base station and UE deteriorates
Solution Approach 1:
The patent segments the frequency resources into uplink subband resources and non-uplink subband resources, and further segments time resources into slots. By defining clear boundaries and exclusion rules for available slots, the system maintains operation clarity while allowing flexible resource utilization in non-overlapping portions.
Solution Approach 2:
The patent applies different quality rules to different time resources: slots with overlapping resources are excluded from available slots, while slots without overlap are included. This local differentiation ensures operation clarity is maintained where needed (in overlapping regions) while maximizing resource utilization where safe (in non-overlapping regions).
2Measurement precision
If available slots are determined by excluding slots with overlapping resources, then operation accuracy is improved, but resource utilization deteriorates
Solution Approach 1:
The patent excludes only the specific slots with overlapping resources from available slots, rather than excluding all slots or using a more conservative approach. This partial exclusion achieves the necessary operation accuracy while minimizing the impact on overall resource utilization.
3Reliability
If repeated uplink transmission is performed in available slots, then communication reliability is improved, but transmission complexity increases
Solution Approach 1:
The patent performs preliminary determination of available slots before executing repeated uplink transmissions. By pre-identifying and excluding slots with overlapping resources, the system simplifies the transmission management process and reduces real-time decision complexity while ensuring reliable communication.
Data Source
AI summary
An operation method of a device in a wireless communication system, and the device are provided. The device can be a terminal, a chipset or a base station. The terminal determines available slots from among a plurality of slots, and repeatedly performs uplink transmission in the available slots. A specific slot is excluded from counting of the available slots if a nonuplink subband resource of the specific slot overlaps with the uplink resource for uplink transmission when the specific slot of the plurality of slots is a subband-full duplex (SB-FD) slot including both of the uplink subband resource and the non-uplink subband resource in the frequency domain.