Adaptive HARQ-ACK Bundling for Dynamic Resource Allocation
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Solution Overview
Problem
Conventional HARQ-ACK bundling in wireless communication systems is suboptimal as it either eliminates most HARQ-ACK information or cannot account for dynamic changes in available resources, leading to inefficient retransmissions and incorrect redundancy versions.
Innovation Solution
A method for a UE to adaptively perform HARQ-ACK bundling based on available resources and required resources for target reception reliability, selecting a second set of AIBs and performing bundling operations to generate a third set of AIBs, allowing for dynamic adjustment of the number of HARQ-ACK information bits transmitted.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional HARQ-ACK bundling is applied to reduce the number of AIBs, then the number of resources required for transmission is reduced, but most HARQ-ACK information is eliminated leading to inefficient retransmissions
Solution Approach 1:
The patent applies dynamic bundling by determining the number of AIBs to be bundled based on available resources and target reception reliability requirements. The bundling operation adapts its程度 according to channel conditions and resource availability, rather than applying fixed bundling. This allows the system to maintain more AIBs when resources are abundant while reducing AIBs only when necessary, thus resolving the contradiction between resource reduction and information preservation.
Solution Approach 2:
The patent changes the parameter of AIB quantity dynamically based on available resources and target reliability. By calculating the required number of AIBs using equations that consider resource availability and reliability targets, the system adjusts the bundling程度 to achieve optimal balance between resource efficiency and information retention, preventing both information loss and resource waste.
2Quantity of substance
If conventional HARQ-ACK bundling is applied, then resource requirements are reduced, but the system cannot account for dynamic changes in available resources leading to incorrect redundancy versions
Solution Approach 1:
The patent implements dynamic adaptation by continuously monitoring available resources and adjusting the number of AIBs accordingly. The system calculates the required resources for target reception reliability and dynamically determines the bundling operation, ensuring adaptability to changing resource conditions while maintaining correct redundancy version selection.
Solution Approach 2:
The patent employs feedback mechanisms where the determined number of AIBs based on available resources and target reliability feeds back into the transmission decision process. This feedback loop ensures that the system continuously adapts to dynamic resource changes and maintains optimal performance by adjusting bundling operations based on current system state.
3Reliability
If the number of AIBs is increased to maintain information accuracy, then HARQ-ACK information reliability is improved, but the number of resources required for transmission increases
Solution Approach 1:
The patent uses parameter changes to dynamically adjust the number of AIBs based on target reception reliability requirements and available resources. By calculating the optimal number of AIBs using equations that incorporate reliability targets, the system achieves the required reliability level while minimizing resource consumption, resolving the contradiction between reliability and resource usage.
Solution Approach 2:
The patent applies dynamic adjustment of AIB quantity based on real-time resource availability and reliability requirements. The system dynamically determines the bundling operation to achieve target reliability without over-provisioning resources, allowing flexible adaptation to different channel conditions and resource scenarios.
Data Source
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AI summary
Methods and apparatus is provided for a User Equipment to transmit acknowledgement information together with data information to a base station during a Transmission Time Interval. A number of nominal resources for the transmission of the first set of AIBs is compared to a number of resources available to the UE for transmission of the acknowledgement information. The first set of AIBs is transmitted if the number of nominal resources is less than or equal to the number of available resources. A second set of AIBs is selected from the first set of AIBs and bundling operations are performed over respective distinct subsets of AIBs in the second set of AIBs to obtain a third set of AIBs if the number of nominal resources is greater than the number of available resources. The third set of AIBs and a fourth set of AIBs are transmitted.