PUCCH Resource Selection for Multi-Carrier Control Information
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in transmitting control information, particularly in resource allocation and signal processing methods, which affect the efficient transmission of control data such as scheduling requests and acknowledgments in multi-carrier environments.
Innovation Solution
The method involves selecting a Physical Uplink Control Channel (PUCCH) resource for control information transmission, modulating the information, and using a Reference Signal for demodulation, allowing for efficient allocation and transmission of control information across multiple component carriers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If control information is transmitted using conventional methods in multi-carrier environments, then the system can support multiple component carriers, but the resource allocation efficiency and signal processing overhead increase
Solution Approach 1:
The patent applies universality by using a unified PUCCH resource selection mechanism that works across multiple component carriers. The UE selects a single PUCCH resource from multiple carriers to transmit control information, creating a universal approach that adapts to multi-carrier environments while maintaining efficiency. This allows the same resource allocation principles to apply regardless of the number of component carriers configured.
Solution Approach 2:
The patent extracts the control information transmission function from each individual component carrier and consolidates it into a single selected PUCCH resource. Instead of allocating separate resources on every carrier, the system extracts and centralizes the control channel transmission to one selected carrier, reducing overall resource overhead while maintaining multi-carrier functionality.
2Reliability
If separate PUCCH resources are allocated for each component carrier, then control information can be transmitted on each carrier, but the signaling overhead and resource consumption increase
Solution Approach 1:
The patent merges control information transmission across multiple component carriers into a single PUCCH resource. Instead of allocating separate PUCCH resources on each carrier, the system combines the control channel functions and selects one PUCCH resource from the available carriers to carry the control information, thereby reducing resource consumption while maintaining transmission reliability.
Solution Approach 2:
The selected PUCCH resource serves as a universal control channel for multiple component carriers. This single resource performs the function of what would otherwise require multiple separate resources, reducing the quantity of resources needed while maintaining the ability to transmit control information reliably across the aggregated carriers.
3Adaptability or versatility
If multiple PUCCH resources are configured for control information, then transmission flexibility increases, but the complexity of resource selection and management increases
Solution Approach 1:
The patent uses parameter changes in the form of carrier indicators to manage PUCCH resource selection. The network configures multiple PUCCH resources with associated carrier indicators, and the UE selects resources based on these parameters. This systematic parameter-based approach provides transmission flexibility while managing selection complexity through structured parameter management rather than arbitrary resource allocation.
Data Source
AI summary
The present invention relates to a method in which a terminal transmits control information in a wireless communication system, comprising the following steps: selecting a PUCCH resource for control information from among a plurality of PUCCH resources; transmitting, through the selected PUCCH resources, a PUCCH signal carrying the modulation value corresponding to the control information; and transmitting a reference signal for the demodulation of the PUCCH signal, wherein the control information is identified by a combination of the PUCCH resource and resources for the modulation value and the reference signal.