Slot Aggregation for Side Link Transport Block Sizing
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Solution Overview
Problem
Current wireless communication technologies, such as 5G NR, face challenges in efficiently transmitting large packets over multiple slots due to limited bandwidth and per-slot coding rate limitations, making it difficult to support side link communications effectively.
Innovation Solution
The implementation of slot aggregation techniques, where the size of a transport block is determined based on available resource elements across multiple slots, allowing for flexible resource allocation and modulation coding schemes to optimize data transmission across non-consecutive slots.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If slot aggregation is used to transmit large packets over multiple slots, then the packet size that can be transmitted is improved, but the complexity of resource allocation and coding increases
Solution Approach 1:
The patent divides a large transport block into multiple code blocks that are distributed across multiple slots. Each code block is independently coded and can be transmitted in different slots, allowing large packets to be transmitted over multiple time resources while maintaining manageable complexity through modular processing
Solution Approach 2:
The patent extends resource allocation from a single-slot dimension to a multi-slot dimension by introducing time-domain distribution of code blocks. Resources are allocated across multiple slots with different quantities of available resource elements, transforming the problem from one-dimensional to multi-dimensional resource management
2Device complexity
If bandwidth is limited, then system simplicity is maintained, but the ability to transmit large packets deteriorates
Solution Approach 1:
The patent performs preliminary coding and segmentation of the transport block into code blocks before transmission. This allows the system to prepare large packets in advance and distribute them across multiple slots, effectively increasing transmission capacity without requiring increased instantaneous bandwidth
Solution Approach 2:
The patent enables continuous transmission of packet data across multiple slots by distributing code blocks throughout the time domain. This continuous action across multiple time resources allows large packets to be transmitted effectively even with limited per-slot bandwidth
3Reliability
If per-slot coding rate is limited, then error control reliability is improved, but the transmission efficiency for large packets deteriorates
Solution Approach 1:
The patent segments the transport block into multiple code blocks that can be independently coded at controlled rates. This segmentation allows each code block to be transmitted with appropriate coding rate for reliability while the aggregate transmission across multiple slots achieves high overall efficiency
Solution Approach 2:
The patent changes the coding parameters by allowing different code blocks to use different redundancy versions and coding rates adapted to their specific transmission conditions. This parameter adaptation enables reliable transmission of each code block while maintaining high overall transmission efficiency for the complete packet
Data Source
AI summary
Certain aspects of the present disclosure are generally directed to an apparatus for wireless communication. The apparatus generally includes a processing system configured to determine a size of a transport block for a data channel based on a quantity of available resource elements of an allocation of resources for the transport block, the resources being allocated for transmission of data encoded in a plurality of slots of the data channel using slot aggregation, wherein the allocated resources in the plurality of slots have different quantities of available resource elements for the data, and generate the data channel in accordance with the determined size of the transport block, and an interface configured output the data channel for transmission.