Acknowledgement Transmission in Short-Type Subframes

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing communication systems face reduced reliability and increased uplink control overhead due to limited bits available for transmitting acknowledgements in short-type subframes, which affects the reliability of acknowledgement transmission and reduces uplink throughput.

Innovation Solution

Transmitting acknowledgements consolidated into long-type subframes, utilizing the additional symbols available in these subframes for more reliable acknowledgement transmission and reducing uplink control overhead by aligning short-type subframes with long-type subframe boundaries.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If acknowledgements are transmitted in short-type subframes, then transmission speed is improved, but reliability deteriorates due to limited bits available for acknowledgement transmission

Engineering Contradiction:

Improvetransmission speedVSAvoidreliability of acknowledgement transmission

Core Design Contradiction:

SpeedVSReliability

Solution Approach 1:

The patent merges multiple short-type subframes into a single long-type subframe for acknowledgement transmission. By consolidating the acknowledgement bits from multiple short subframes into one long subframe, the system maintains fast transmission timing while providing sufficient bit capacity for reliable acknowledgement transmission, thereby resolving the contradiction between speed and reliability.

Inventive Principle:

Principle #5Merging (Combining)

2Speed

If acknowledgements are transmitted in short-type subframes, then transmission speed is improved, but uplink control overhead increases

Engineering Contradiction:

Improvetransmission speedVSAvoiduplink control overhead

Core Design Contradiction:

SpeedVSQuantity of substance

Solution Approach 1:

The patent combines multiple short-type subframes into one long-type subframe for carrying acknowledgements. This merging approach reduces the frequency of separate acknowledgement transmissions, thereby decreasing uplink control overhead while preserving the fast transmission characteristics of short subframes through proper timing alignment.

Inventive Principle:

Principle #5Merging (Combining)

3Productivity

If multiple short-type subframes are used for data transmission, then productivity is improved, but device complexity increases due to managing multiple subframe types

Engineering Contradiction:

Improvedata transmission productivityVSAvoidcomplexity of managing multiple subframe types

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent segments the long-type subframe into multiple short-type subframe units for data transmission purposes, while using a single consolidated long-type subframe for acknowledgement transmission. This segmentation allows high-productivity multi-subframe data transmission while simplifying the acknowledgement management process by providing a unified transmission vehicle, thereby reducing overall device complexity.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentEP3398389B1Transmitting acknowledgements

Publication Date: 2021.10.27 LENOVO INNOVATIONS LTD (HONG KONG)

Figure 1
Figure 1B~1C
Figure 1D

AI summary

For transmitting acknowledgements, a method (500) receives (505) at least one first data block (220) in at least one of a first plurality (125a) of short-type subframes (135a). The method (500) further transmits (515) a first acknowledgement (240a) corresponding to the at least one first data block (220) received in the first plurality (125a) of short-type subframes (135a) using a first long-type subframe (135b). A duration of the first plurality (125a) of short-type subframes (135a) is equal to a duration of the long-type subframe (135b).