Multi-Transport Block Scheduling via DCI Offset Indicators
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Solution Overview
Problem
Existing communication technologies face challenges in reducing overhead while ensuring efficient multi-transport block (TB) resource and process scheduling when TBs of different sizes are indicated using a single downlink control information (DCI) in multi-TB scheduling.
Innovation Solution
The method involves using a resource assignment field, Modulation and Coding Scheme (MCS) field, and offset value indicator information within the DCI to determine TB sizes, allowing for efficient scheduling and transmission of multiple TBs over a physical downlink control channel (PDCCH, with the new data indicator (NDI) information determining whether TBs are newly transmitted or retransmitted.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If one DCI schedules multiple TBs of different sizes, then multi-TB resource scheduling efficiency is improved, but overhead increases
Solution Approach 1:
The patent segments the indication of TB sizes into two parts: TB1 size is directly indicated by the resource assignment field and MCS field, while TB2 size is derived through offset value indicator information relative to TB1. This segmentation allows efficient scheduling of multiple TBs with different sizes while minimizing overhead by not requiring separate full-size indications for each TB.
Solution Approach 2:
The patent introduces offset value indicator information that changes the reference parameter (TB1 size) to derive TB2 size. By using offset values instead of absolute size indications, the system achieves flexible multi-TB scheduling with reduced signaling overhead, as the offset requires fewer bits than a complete size indication.
2Loss of information
If one DCI schedules multiple TBs, then control signaling overhead is reduced, but indicating different TB sizes increases overhead
Solution Approach 1:
The patent transforms the indication mechanism from absolute TB size values to relative offset values. The resource assignment field and MCS field indicate TB1 size, while an offset value indicator provides the difference for TB2 size. This parameter transformation reduces the number of bits required to indicate multiple TB sizes compared to providing full size information for each TB.
Solution Approach 2:
The offset value indicator information acts as an intermediary between the resource assignment/MCS fields and the actual TB2 size determination. This intermediary element allows the system to efficiently represent different TB sizes without requiring direct, separate indication of each TB's complete size information, thereby reducing overall overhead.
3Loss of information
If offset value indicator information is used to determine TB sizes, then overhead is reduced, but complexity of determining TB sizes increases
Solution Approach 1:
The patent performs preliminary action by having the resource assignment field and MCS field first determine TB1 size, then using the offset value indicator to derive TB2 size. This sequential determination approach simplifies the overall process compared to independently determining multiple TB sizes, as the first TB's parameters serve as a baseline for the second TB, reducing the information needed.
Data Source
AI summary
Provided are a transport block (TB) scheduling method and device, a storage medium and an electronic device. The method includes: in the case that one DCI schedules multiple TBs, the sizes of the multiple TBs are indicated through a resource assignment field, an MCS field, offset value indicator information and NDI information of the DCI, wherein the NDI information is used for determining whether the multiple TBs are newly transmitted or retransmitted; or the sizes of the multiple TBs are indicated through the resource assignment field, the MCS field, and the offset value indicator information of the DCI; and the DCI is transmitted over a PDCCH.