Transport Block Resource Mapping for Multi-Slot Spectral Efficiency
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Solution Overview
Problem
The existing communication methods result in resource wastage due to the fixed allocation of transmission resources for transport blocks, leading to inefficient use of symbols in slots, especially with multi-slot scheduling.
Innovation Solution
Adaptive determination of transmission quantities and code rates for transport blocks based on available resources, allowing flexible allocation and utilization of resources across slots, ensuring equivalent code rates and improved spectral efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If configuration information of a transport block is transmitted only in one slot during multi-slot scheduling, then the configuration overhead is reduced, but the resource utilization in other slots deteriorates because corresponding symbols cannot be used for data transmission
Solution Approach 1:
The patent makes the resource allocation dynamic by allowing the network device to flexibly determine the quantity of transport blocks and their mapping slots based on channel conditions and resource availability, rather than using a fixed allocation pattern. This enables adaptive resource utilization across multiple slots while maintaining efficient configuration signaling.
Solution Approach 2:
The patent changes the parameters of resource allocation by introducing flexible mapping relationships between transport blocks and slots, where the mapping can be adjusted based on channel quality indicators and resource status. This allows the system to optimize resource utilization without increasing configuration overhead by modifying how resources are assigned rather than adding more configuration parameters.
2Reliability
If a same symbol in a slot is occupied for each transmission of each transport block, then the transmission reliability is improved through repeated transmissions, but the waste of resources increases because the same symbol position cannot be used for other data
Solution Approach 1:
The patent segments the resource allocation by allowing different transport blocks to be mapped to different slot positions within the multi-slot schedule. Instead of occupying the same symbol position in every slot, transport blocks are distributed across multiple slots, which maintains transmission reliability through diversity while enabling other symbols to be utilized for additional data transmission.
Solution Approach 2:
The patent transitions from a one-dimensional resource allocation (same symbol position in each slot) to a two-dimensional allocation scheme where transport blocks can be positioned at different symbol locations across multiple slots. This dimensional change allows the system to maintain reliability through repeated transmissions while utilizing previously wasted resource positions.
3Device complexity
If fixed resource allocation is used for transport block transmissions, then the scheduling complexity is reduced, but the spectral efficiency deteriorates due to inability to adapt to channel conditions
Solution Approach 1:
The patent introduces flexible parameters for transport block mapping without significantly increasing scheduling complexity. By allowing the network device to determine the quantity of transport blocks and their slot assignments based on channel quality indicators, the system achieves adaptive spectral efficiency while maintaining relatively simple scheduling procedures through parameter-based flexibility rather than complex algorithms.
Data Source
AI summary
A communication method, apparatus, and system. The method includes: determining a first configuration, a modulation order, and a first code rate, where the first configuration includes a mapping type, a time domain resource, and a first quantity and/or a first transmission quantity; determining a second code rate, a second quantity, and a second transmission quantity based on the first code rate, the mapping type, and the first quantity and/or the first transmission quantity; determining a valid resource of the second transport block based on the time domain resource, the second quantity, and the second transmission quantity; and sending second data to a first device based on first data, the modulation order, the second code rate, and the valid resource of the second transport block.