Wireless Transport Block Scheduling with Independent MCS
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Solution Overview
Problem
Conventional radio access technologies face challenges in efficiently transmitting data with different Quality of Service (QoS) requirements over a single transport block, leading to deteriorated transmission efficiency and quality, especially when the transport block size is large.
Innovation Solution
A method is introduced where multiple transport blocks with different Modulation and Coding Schemes (MCS) are scheduled through a single Downlink Control Information (DCI), allowing for efficient radio resource allocation and minimized DCI overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple transport blocks are transmitted to support different QoS requirements, then transmission quality and system capacity are improved, but control channel resources increase leading to decreased overall system capacity
Solution Approach 1:
The patent combines multiple transport blocks into a single transport block for transmission. Different data streams with different QoS requirements are multiplexed together, allowing multiple logical channels to share one physical transport block. This reduces the number of separate control channels needed while maintaining the ability to differentiate QoS through internal multiplexing structures and separate HARQ processes.
Solution Approach 2:
The patent creates a universal transport block structure that can carry multiple types of data with different QoS requirements simultaneously. The single transport block serves multiple functions by incorporating different data streams, allowing one control channel to manage multiple QoS flows rather than requiring separate control channels for each QoS type.
2Device complexity
If a single transport block is used for all data, then control channel overhead is reduced, but transmission efficiency deteriorates when transport block size is large
Solution Approach 1:
The patent segments the single large transport block into multiple code blocks for processing and transmission. Each code block can be independently encoded, transmitted, and acknowledged through separate HARQ processes. This segmentation allows efficient handling of large data volumes while maintaining manageable control overhead, as each segment can be optimized independently.
Solution Approach 2:
The patent introduces a new dimension of organization within the transport block by using code block groups and hierarchical structuring. Instead of treating the transport block as a single unit, it creates multiple levels of organization (transport block → code block groups → code blocks) that enable efficient management of large data volumes while keeping control channel interactions manageable through selective retransmission at different levels.
3Productivity
If transport block size is increased to improve data throughput, then productivity increases, but transmission quality deteriorates
Solution Approach 1:
The patent divides large transport blocks into smaller code blocks that can be transmitted independently with separate HARQ acknowledgments. This allows the system to achieve high throughput by utilizing large overall data volumes while maintaining transmission quality through smaller, more manageable code block sizes that are less prone to complete failure. Selective retransmission of only failed code blocks maintains reliability.
Solution Approach 2:
The patent implements dynamic adaptation by allowing different code blocks within the same transport block to have different characteristics and retransmission priorities. The system can dynamically adjust which code blocks are retransmitted based on their importance and error status, enabling flexible optimization of both throughput and transmission quality based on real-time conditions.
Data Source
AI summary
Provided are a method for processing a transport block of an apparatus in a wireless communication system and an apparatus using the method. The apparatus receives downlink control information (DCI) and performs one of reception and transmission of a plurality of transport blocks within one transmit time interval (TTI) scheduled by the DCI. An MCS independent of each other is applied to each of the plurality of transport blocks, and a CRC for each transport block is added. The DCI includes information indicating MCS applied to each of the plurality of transport blocks and information indicating the amount of resources allocated to each of the plurality of transport blocks. The plurality of transport blocks are received or transmitted from a transport block having the highest required QoS.


