Full-Duplex Uplink MCS Scheduling for Conditional Multi-Slot PUSCH
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing uplink transmissions in full duplex systems, particularly in TDD configurations, due to limitations in scheduling operations and latency issues arising from asymmetric traffic patterns and duplex switching overhead.
Innovation Solution
A method and apparatus for uplink transmission in full duplex systems that involve receiving multiple modulation and coding scheme (MCS) indications for different subsets of slots and determining a condition for valid transmission, allowing flexible scheduling based on these indications to optimize multi-slot PUSCH transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If single MCS indication is used for multi-slot PUSCH transmission, then device complexity is reduced, but adaptability to different traffic patterns and channel conditions deteriorates
Solution Approach 1:
The patent segments the set of slots into multiple subsets, with each subset associated with a specific MCS indication. This allows different MCS values to be applied to different slot subsets based on traffic patterns and channel conditions, thereby improving adaptability while maintaining manageable device complexity through structured segmentation.
Solution Approach 2:
The patent introduces dynamic MCS selection by allowing the UE to determine which MCS indication to use based on valid conditions that may vary across different slots. This dynamic adaptation enables the system to respond to changing traffic patterns and channel conditions without requiring complex centralized scheduling for every scenario.
2Adaptability or versatility
If duplex switching is performed in TDD configurations, then asymmetric traffic patterns are accommodated, but latency increases due to switching overhead
Solution Approach 1:
The patent configures multiple MCS indications in advance for different slot subsets before transmission occurs. This preliminary configuration allows the UE to quickly determine the appropriate MCS for each slot without requiring real-time switching decisions, thereby reducing latency while maintaining adaptability to asymmetric traffic patterns.
3Adaptability or versatility
If multiple MCS indications are configured for different slot subsets, then scheduling flexibility is improved, but device complexity increases
Solution Approach 1:
The patent applies different MCS indications to different local slot subsets based on specific conditions or traffic patterns. This local differentiation allows scheduling flexibility where needed while avoiding unnecessary complexity in slots where standard scheduling suffices, thereby balancing adaptability with manageable device complexity.
4Productivity
If conditional transmission determination is implemented, then transmission efficiency is improved, but processing complexity increases
Solution Approach 1:
The patent enables the UE to autonomously determine whether transmission conditions are valid for each slot subset based on pre-configured criteria. This self-service approach allows the UE to make local transmission decisions without requiring continuous network intervention, thereby improving transmission efficiency while keeping processing complexity manageable through rule-based determination.
Data Source
AI summary
Apparatuses and methods for uplink transmission in full duplex systems. A method for transmitting a physical uplink shared channel (PUSCH) associated with a multi-slot PUSCH transmission procedure includes receiving first information for a first modulation and coding scheme (MCS) indication associated with a first subset of slots from a set of slots on a cell, second information for a second MCS indication associated with a second subset of slots from the set of slots on the cell, and third information for a condition. The method further includes determining whether the condition is valid for transmission in a slot from the second subset of slots and transmitting the PUSCH in a slot associated with the multi-slot PUSCH transmission procedure based on the first MCS indication when the condition is valid and the second MCS indication when the condition is not valid.