DCI CBGTI Field for Codeword Scheduling in PUSCH
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing multiple codewords for single and multiple transport block transmissions, leading to suboptimal performance in terms of throughput, latency, and resource utilization.
Innovation Solution
The method involves receiving downlink control information (DCI) that schedules a physical uplink shared channel (PUSCH), with a code block group (CBG) transmission information (CBGTI) field indicating the quantity of bits based on the configured number of codewords. This information is used to transmit on the PUSCH according to the DCI, enabling efficient scheduling and resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple codewords are used for single and multiple transport block transmissions, then throughput and reliability are improved, but device complexity and processing overhead increase
Solution Approach 1:
The transport block is segmented into multiple code block groups (CBGs), which are then mapped to different codewords. This segmentation allows parallel processing of multiple CBGs across different codewords, improving throughput while managing complexity through structured division of the transmission data
Solution Approach 2:
The patent introduces a new dimension of complexity management by dynamically configuring the number of CBGs per transport block and the mapping between CBGs and codewords. This dimensional approach allows the system to adapt to different channel conditions and traffic requirements, optimizing throughput while controlling processing overhead through flexible parameter configuration
2Measurement precision
If code block group transmission information field is included in DCI, then scheduling precision and resource allocation efficiency are improved, but downlink control information overhead increases
Solution Approach 1:
The CBG transmission information is selectively included in DCI based on local conditions such as the number of configured CBGs, the codeword assignment mode, and specific transmission requirements. This local quality approach ensures that the additional control information is only transmitted when necessary, maintaining scheduling precision while minimizing unnecessary overhead
Solution Approach 2:
The patent employs parameter changes by dynamically adjusting the number of CBGs per transport block and the CBG-to-codeword mapping configuration based on channel conditions, traffic type, and UE capability. This allows the system to optimize the balance between scheduling precision and control information overhead by adapting parameters to current network conditions
3Adaptability or versatility
If dynamic codeword configuration is implemented, then adaptability and spectral efficiency are improved, but processing complexity and power consumption increase
Solution Approach 1:
The system implements dynamic codeword configuration where the number of CBGs per transport block and the CBG-to-codeword mapping are adjusted in real-time based on channel quality, traffic characteristics, and UE capability. This dynamic approach improves adaptability and spectral efficiency while the network controls power consumption by only reconfiguring parameters when channel conditions warrant such changes
Solution Approach 2:
The patent creates a universal framework that can handle both single transport block and multiple transport block transmissions, as well as dynamic and static codeword configurations, through a unified CBG-based approach. This multi-functionality allows the same mechanism to serve multiple purposes, reducing the need for separate processing paths and thereby lowering overall power consumption despite the enhanced adaptability
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive downlink control information (DCI) that schedules a physical uplink shared channel (PUSCH). The DCI includes a code block group transmission information field that includes a quantity of bits based on a quantity of codewords configured for the UE. Accordingly, the UE may transmit on the PUSCH according to the DCI. Numerous other aspects are described.