Uplink Control Channel Resource Allocation for Multicarrier ACK/NACK Transmission
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in transmitting uplink control information, particularly ACK/NACK information, especially in multicarrier situations, due to limitations in resource allocation and channel selection schemes.
Innovation Solution
The proposed solution involves a method for efficiently transmitting uplink control information by explicitly reserving and managing PUCCH resources through RRC signaling, allowing for flexible ACK/NACK channel selection and allocation across multiple carriers, thereby improving the reliability and efficiency of control information transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If one ACK/NACK resource is provided for ACK/NACK resource selection upon SPS activation, then resource allocation is simplified, but transmission efficiency and reliability deteriorate in multicarrier situations
Solution Approach 1:
The patent segments the single ACK/NACK resource into multiple carrier-specific resources. Each carrier is assigned dedicated PUCCH resources for ACK/NACK transmission, allowing independent resource allocation per carrier while maintaining overall system coordination. This segmentation resolves the contradiction by providing both simplified per-carrier allocation and improved multicarrier reliability.
Solution Approach 2:
The patent introduces a new dimension of resource allocation by establishing explicit PUCCH resource mappings across multiple carriers. Instead of single-dimension resource selection, the system now operates in a multi-dimensional resource space where each carrier has dedicated resources, enabling efficient ACK/NACK transmission without increasing overall system complexity.
2Productivity
If explicit PUCCH resource reservation is implemented through RRC signaling, then ACK/NACK transmission efficiency improves, but device complexity and signaling overhead increase
Solution Approach 1:
The patent applies preliminary action by pre-configuring PUCCH resources through RRC signaling before actual ACK/NACK transmission. The PUCCH-ResourceConfig message establishes resource mappings in advance, allowing efficient transmission without real-time resource allocation decisions. This preliminary configuration improves transmission efficiency while managing complexity through standardized procedures.
Solution Approach 2:
The patent changes the parameter of resource allocation from dynamic to semi-static through RRC configuration. By establishing PUCCH resources through higher-layer signaling rather than dynamic grant, the system achieves efficient transmission while reducing real-time processing complexity. The parameter change enables efficient ACK/NACK transmission with manageable device complexity.
3Quantity of substance
If ACK/NACK resources are dynamically allocated, then resource utilization improves, but transmission reliability and error rate worsen in multicarrier scenarios
Solution Approach 1:
The patent creates a universal resource allocation framework where PUCCH resources are configured through RRC signaling to serve multiple carriers. The PUCCH-ResourceConfig structure provides multi-functional resource definitions that can be applied across different carriers, achieving both high resource utilization and reliable transmission through standardized, repeatable allocation patterns.
Data Source
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AI summary
The present invention pertains to a wireless communication system. More specifically, the present invention relates to a method for transmitting uplink control information and to a device therefor, and relates to a method comprising the steps of: selecting one uplink control channel resource corresponding to a plurality of HARQ-ACKs, from a plurality of uplink control channel resources; and transmitting a bit value corresponding to the plurality of HARQ-ACKs, by using the selected uplink control channel resource. The present invention also relates to a device for the method.