Adjusting Repetition Windows for Late Transport Blocks
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Solution Overview
Problem
In wireless communication systems, when a transport block is not available for transmission until after the first TTI of a repetition window, the transmitting device may miss transmission opportunities due to adhering to redundancy version sequences, leading to increased latency and reduced chances of successful reception.
Innovation Solution
The transmitting device identifies when the transport block is available in a subsequent TTI and transmits it regardless of the redundancy version value, using an adjusted redundancy version sequence or adjusting the repetition window to include the available TTI as the initial TTI, thereby increasing transmission opportunities and reducing latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the transmitting device adheres to the redundancy version sequence and only transmits when the redundancy version value is zero, then the transmission protocol is followed correctly, but transmission opportunities are missed and latency increases
Solution Approach 1:
The patent applies dynamics by making the repetition window adjustable and adaptable. The repetition window manager dynamically modifies the repetition window configuration based on transport block availability, allowing the system to transition from a static, rigid timing structure to a flexible one that can accommodate variable data availability while maintaining protocol compliance and reducing latency
Solution Approach 2:
The patent changes the parameter of the repetition window configuration (such as the starting TTI or window size) based on when the transport block becomes available. This parameter adjustment allows the system to align transmission opportunities with actual data availability, resolving the conflict between protocol adherence and latency reduction
2Reliability
If the transmitting device waits for the transport block to be available before transmitting, then transmission accuracy is improved, but transmission opportunities are lost and latency increases
Solution Approach 1:
The patent implements preliminary action by pre-configuring the repetition window and identifying potential transmission opportunities in advance. The system prepares the transmission framework beforehand and then adapts it based on actual transport block availability, allowing for both accurate transmission and improved efficiency through proactive resource allocation
Solution Approach 2:
The dynamic adjustment of the repetition window allows the system to balance between waiting for accurate data readiness and seizing transmission opportunities. The repetition window manager continuously monitors transport block availability and adjusts the transmission schedule dynamically, improving both reliability and productivity
3Stability of the object's composition
If the transmitting device uses a fixed repetition window configuration, then the transmission schedule is predictable, but flexibility to adapt to transport block availability is reduced
Solution Approach 1:
The patent transforms the fixed repetition window into a dynamic structure that can be adjusted based on transport block availability. The repetition window manager modifies window parameters (such as starting position or duration) while maintaining the overall structured approach, thereby preserving predictability while introducing necessary flexibility
Solution Approach 2:
The repetition window configuration serves multiple functions: it provides a predictable schedule framework while simultaneously adapting to different transport block availability scenarios. This multi-functionality allows the same mechanism to maintain stability and provide flexibility, resolving the contradiction between fixed configuration and adaptive behavior
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. In some wireless communications systems, a transmitting device may be configured to transmit a transport block in a set of transmission time intervals (TTIs) of a repetition window to improve the chances that the transport block is received by a receiving device. In some cases, however, the transport block may not be available to be transmitted in the repetition window until after a first TTI of the repetition window. In such cases, a transmitting device may use the techniques described herein to identify appropriate configurations for transmitting the transport block in the repetition window. For example, the transmitting device may identify an adjusted redundancy version sequence to use for transmitting the transport block in the repetition window or the transmitting device may adjust a repetition window based on a TTI in which the transport block is available to be transmitted.