Data Transmission Method Reducing Control Information Overhead
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Solution Overview
Problem
Existing communications systems face high bit overheads when using control information (CI) to schedule multiple transport blocks, leading to inefficient use of transmission resources.
Innovation Solution
A data transmission method where a communications device receives flag information indicating whether CI can schedule multiple transport blocks or a single block, and accordingly obtains transport block allocation or HARQ process number information to optimize data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If one CI is used to schedule a plurality of transport blocks, then transmission resource efficiency is improved, but indication overhead increases
Solution Approach 1:
The patent segments the indication information into two parts: a first indication information field indicating the number of transport blocks, and second indication information fields (bitmap fields) indicating the reception status of each transport block. This segmentation allows the CI to efficiently schedule multiple transport blocks while maintaining manageable indication overhead through structured organization of indication bits.
Solution Approach 2:
The patent dynamically adjusts the indication overhead based on the number of transport blocks being scheduled. When fewer transport blocks are scheduled, fewer bitmap bits are required. The system adapts the indication structure to the actual scheduling needs, using variable-length bitmap fields that match the number of transport blocks, thereby optimizing the balance between scheduling capability and indication overhead.
2Adaptability or versatility
If more bits are used in CI to indicate transport block information, then scheduling capability is improved, but transmission resource consumption increases
Solution Approach 1:
The patent creates a universal CI structure that can schedule a variable number of transport blocks (from 1 to 8 or more) using a standardized format. The first indication information field combined with configurable bitmap fields provides multi-functionality, allowing the same CI structure to adapt to different scheduling scenarios without requiring separate indication mechanisms for each case.
Solution Approach 2:
The patent changes the parameter of bitmap length to match the number of transport blocks being scheduled. Instead of using a fixed-length bitmap, the system adjusts the bitmap field length dynamically based on the actual number of transport blocks, thereby reducing unnecessary bit transmission while maintaining full scheduling capability.
Data Source
AI summary
In a data transmission method, a first communications device receives flag information. When the flag information indicates that one piece of control information can be used for scheduling of a plurality of transport blocks, the first communications device obtains transport block allocation information that indicates the number of transport blocks scheduled by the control information and a bit state corresponding to each transport block. Alternatively, when the flag information indicates that one piece of control information can be used for scheduling of only one transport block, the first communications device obtains hybrid automatic repeat request (HARQ) process number information, where the HARQ process number information indicates an HARQ process number corresponding to the transport block scheduled by the control information. The first communications device sends data or receives data based on the information.