Implicit PUCCH Resource Linkage for Uplink Control Information
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in transmitting uplink control information, particularly ACK/NACK information, in multi-carrier environments, leading to potential performance deterioration and resource wastage.
Innovation Solution
The method involves using implicit PUCCH resources linked to the PDCCH that schedules the primary carrier for ACK/NACK transmission, reducing unnecessary explicit resource usage and ensuring consistent ACK/NACK information across carriers, even during carrier reconfiguration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If explicit PUCCH resources are used for ACK/NACK transmission in multi-carrier environments, then ACK/NACK information can be transmitted, but PUCCH resource overhead increases and resource wastage occurs
Solution Approach 1:
The patent applies universality by making the PDCCH resource serve multiple functions: it not only schedules data transmission but also implicitly indicates the PUCCH resource for ACK/NACK feedback. This multi-functionality eliminates the need for separate explicit PUCCH resource allocation, reducing resource overhead while maintaining transmission reliability.
Solution Approach 2:
The system uses self-service by allowing the PDCCH resource allocation to automatically determine the corresponding PUCCH resource through implicit linkage. The ACK/NACK resource is derived from the PDCCH resource index, enabling the system to self-configure resources without additional signaling overhead.
2Adaptability or versatility
If multiple PUCCH resources are allocated for multi-carrier ACK/NACK transmission, then all carriers can be supported, but device complexity and resource management difficulty increase
Solution Approach 1:
The patent segments the multi-carrier ACK/NACK feedback into multiple PUCCH resources, where each resource corresponds to a specific carrier or set of carriers. This segmentation allows independent management of resources per carrier while maintaining overall system adaptability through the implicit linkage mechanism.
Solution Approach 2:
The patent introduces a new dimension of resource allocation by using the PDCCH resource index as an implicit indicator for PUCCH resource selection. This dimensional transformation simplifies resource management by creating a direct mapping relationship between downlink scheduling resources and uplink feedback resources.
3Duration of action of stationary object
If explicit PUCCH resources are used during carrier reconfiguration, then ACK/NACK transmission can continue, but information inconsistency between base station and user equipment may occur
Solution Approach 1:
The patent implements feedback through implicit resource linkage, where the PUCCH resource is determined by the PDCCH resource index. This feedback mechanism ensures that both the base station and user equipment derive the same PUCCH resource from the same PDCCH allocation, preventing information inconsistency during carrier reconfiguration and maintaining transmission continuity.
Data Source
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AI summary
The present invention relates to a wireless communication system. More specifically, the present invention relates to a method for transmitting uplink control information and a device therefor, and the method comprises the steps of: selecting, from a plurality of uplink control channel resources, one uplink control channel resource corresponding to a plurality of HARQ-ACKs; and transmitting bit values corresponding to said plurality of HARQ-ACKs by using the selected uplink control channel resource.