Data Transmission Method Reducing Control Information Overhead
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Solution Overview
Problem
Conventional communication systems face high indication overheads when using control information to schedule multiple transport blocks, leading to excessive bit overheads and increased transmission resources.
Innovation Solution
A data transmission method that reduces indication overheads by using first information to indicate transport block set information, maximum transport block quantity, transport block information, or combination set information, allowing for efficient determination of scheduled transport blocks and HARQ process numbers, thereby optimizing bit usage and resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If one piece of control information is used to schedule multiple transport blocks, then transmission resources are reduced, but indication overheads become excessively high
Solution Approach 1:
The patent segments the indication of transport block information by introducing a first field to indicate whether a first transport block is scheduled, and a second field to indicate whether a second transport block is scheduled. This segmentation allows independent indication of each transport block, reducing the overall overhead compared to indicating all blocks simultaneously while maintaining the ability to schedule multiple blocks with one control information piece.
Solution Approach 2:
The patent implements dynamic indication by allowing the control information to adaptively indicate different combinations of transport blocks based on scheduling needs. The fields can be selectively activated or deactivated depending on whether transport blocks are scheduled, enabling the system to optimize overhead based on actual transmission requirements rather than always indicating maximum capacity.
2Measurement precision
If control information indicates both quantity of scheduled transport blocks and HARQ process numbers for each block, then scheduling accuracy is improved, but bit overheads become excessively high
Solution Approach 1:
The patent extracts the HARQ process number indication from the control information by introducing a separate mechanism. The control information primarily indicates transport block scheduling status through the first and second fields, while HARQ process numbers are determined through a different process, likely through implicit mapping or separate signaling, thereby reducing the bit overhead in the control information while maintaining scheduling accuracy.
Solution Approach 2:
The patent changes the parameter representation by using boolean indicators (first field and second field) instead of full HARQ process number indicators for all transport blocks. This parameter change reduces the bit overhead from indicating complete HARQ process numbers for each block to indicating only the scheduling status, while the system maintains the ability to accurately determine HARQ process numbers through alternative means.
Data Source
AI summary
A data transmission method and a device are disclosed. The data transmission method includes: a first communications device receives first information sent by a second communications device. The first information is used to indicate one or more of transport block set information, maximum transport block quantity information, transport block information, and first combination set information. The first communications device determines, based on the first information, a quantity of transport blocks scheduled by using control information, and a HARQ process number corresponding to each transport block in the transport blocks scheduled by using the control information. The first communications device sends data to the second communications device based on the determined quantity of transport blocks and the determined HARQ process number corresponding to each transport block, or receives, based on the determined quantity of transport blocks and the determined HARQ process number corresponding to each transport block, data.