Transmission Block Indication for Reliable FR2 Uplink Signaling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Blockage in wireless communication systems, such as 5G NR, affects the reliability of uplink and downlink transmissions, particularly in frequency range 2 (FR2), where blockage can disrupt scheduling grants and lead to incomplete data transmission.
Innovation Solution
Implementing a system where wireless communication devices transmit a transmission block indication to enhance the reliability of uplink channels by using multiple scheduling grants and independent transmission configuration indicators, allowing for redundant and repetitive transmissions to ensure data block size determination and improve coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single scheduling grant is used for uplink transmission, then the device complexity is reduced, but the transmission reliability deteriorates due to blockage in FR2
Solution Approach 1:
The patent segments the transmission process by introducing multiple scheduling grants (first and second scheduling grants) that can independently schedule uplink transmissions. This segmentation allows the system to divide the transmission task into multiple redundant attempts, where each grant provides an independent opportunity for successful transmission, thereby improving reliability without requiring a complete redesign of the transmission framework
Solution Approach 2:
The patent implements preliminary action by configuring multiple scheduling grants in advance before transmission begins. The first and second scheduling grants are pre-configured with different transmission configuration indicator (TCI) states, allowing the device to have multiple predetermined transmission paths ready before any blockage occurs, enabling rapid switching without complex real-time decision-making
2Reliability
If multiple scheduling grants with independent TCI states are used, then the reliability of uplink transmission is improved, but the signaling overhead increases
Solution Approach 1:
The patent applies universality by designing the transmission block indication mechanism to serve multiple functions: it identifies which scheduling grant's TBS information to use, indicates the relationship between multiple grants, and provides fallback information for determining transmission block size. This multi-functional design reduces the need for separate signaling for each purpose, thereby reducing overall overhead while maintaining reliability
Solution Approach 2:
The transmission block indication acts as an intermediary element that mediates between multiple scheduling grants and the uplink transmission. Instead of requiring separate detailed signaling for each grant configuration, the transmission block indication provides a compact reference that links the grants together and indicates the appropriate TBS determination method, reducing signaling overhead while maintaining the benefits of multiple grants
3Reliability
If repetitive transmissions are implemented to ensure complete data block reception, then the reliability is improved, but the transmission time increases
Solution Approach 1:
The patent implements partial action by using multiple scheduling grants to schedule what appears to be repetitive transmissions, but where at least one grant schedules a transmission with a different transmission block size. This means the system performs more than a single transmission attempt (excessive action for reliability) but not fully redundant repetitions, as the second transmission may carry additional or different data, thereby reducing the time penalty compared to pure repetition
Data Source
AI summary
Presented are systems and methods for enhancing the reliability of uplink transmissions. A wireless communication device may receive a scheduling grant of an uplink channel from a wireless communication node. The wireless communication device may transmit the uplink channel to the wireless communication node. The wireless communication device may transmit a transmission block indication for determining a transmission block size (TBS) of the uplink channel to the wireless communication node.