Wireless Signal Control Information Resource Allocation
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in transmitting and receiving control information, particularly in scenarios involving multiple access systems like CDMA, FDMA, TDMA, OFDMA, and SC-FDMA, where dynamic allocation of resources and feedback mechanisms are complex.
Innovation Solution
The method involves efficiently allocating PUCCH resources for HARQ-ACK feedback across multiple component carriers and dynamically indicating acknowledgement/negative acknowledgement delays, allowing for flexible and optimized control information transmission and reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If dynamic allocation of resources and feedback mechanisms are used in multiple access systems, then system adaptability and resource utilization are improved, but control information transmission complexity and overhead increase
Solution Approach 1:
The patent segments control information into different types (e.g., HARQ-ACK, CSI, SR) and allocates them to different physical channels (PUCCH, PUSCH, PRACH) based on their urgency and importance. This segmentation reduces the complexity of transmitting all control information through a single channel while maintaining system adaptability.
Solution Approach 2:
The patent implements dynamic resource allocation where the allocation of PUCCH resources for HARQ-ACK feedback is adjusted based on the number of component carriers and feedback timing requirements. This dynamic approach allows the system to adapt to varying traffic conditions while optimizing control information transmission efficiency.
2Reliability
If PUCCH resources are allocated for HARQ-ACK feedback across multiple component carriers, then feedback coverage is improved, but resource allocation overhead increases
Solution Approach 1:
The patent merges HARQ-ACK feedback from multiple component carriers into a single PUCCH transmission when possible, rather than allocating separate PUCCH resources for each carrier. This merging reduces the total control information volume while maintaining reliable feedback transmission across all carriers through code multiplexing or spatial multiplexing.
Solution Approach 2:
The patent designs PUCCH resources to serve multiple functions simultaneously - a single PUCCH resource can carry HARQ-ACK feedback for multiple component carriers, and the same resource structure can adapt to different feedback timing scenarios. This multi-functionality reduces resource allocation overhead while ensuring comprehensive feedback coverage.
3Adaptability or versatility
If acknowledgement/negative acknowledgement delays are dynamically indicated, then feedback timing flexibility is improved, but scheduling complexity increases
Solution Approach 1:
The patent pre-configures multiple PUCCH resource sets with different timing characteristics before actual data transmission. When dynamic feedback timing is needed, the system selects from these pre-configured resources based on the required delay, avoiding complex real-time scheduling decisions and reducing scheduling complexity while maintaining timing flexibility.
Solution Approach 2:
The patent changes the timing parameter (k value) dynamically by selecting different PUCCH resource sets that are pre-configured with different timing offsets. This parameter change approach allows flexible feedback timing adjustment without requiring complex real-time scheduling calculations, as the timing characteristics are embedded in the pre-configured resource sets.
Data Source
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AI summary
The present invention relates to a wireless communication system. More particularly, the present invention relates to a method including receiving only one downlink signal in a set of slots; generating an acknowledgement/negative acknowledgement (A/N) codebook for the one or more downlink signals; and transmitting the A/N codebook, wherein if a specific condition is satisfied, the A/N codebook includes only A/N information for the one downlink signal, and an apparatus therefor.