PUCCH Resource Pairing for Multicarrier MIMO Control
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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 scenarios, where existing methods do not effectively utilize multiple antennas to optimize resource allocation and signal transmission.
Innovation Solution
The method involves selecting a PUCCH resource pair for HARQ-ACKs in a wireless communication system with multiple cells, using multiple antennas to transmit bit values, and configuring PUCCH resources through a processor, including specific resource allocation tables and offset values to optimize control information transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple PUCCH resources are allocated for HARQ-ACK transmission in multicarrier systems, then the reliability of control information transmission is improved, but the device complexity and resource allocation overhead increase
Solution Approach 1:
The patent segments PUCCH resources into multiple pairs (first PUCCH resource pair and second PUCCH resource pair) for different antenna ports. Each resource pair is independently configured with specific resource indices and antenna port assignments, allowing reliable MIMO transmission while maintaining organized, manageable resource structures that reduce allocation complexity.
Solution Approach 2:
The patent introduces spatial dimension by allocating PUCCH resources across multiple antenna ports (first antenna port and second antenna port) with corresponding resource pairs. This dimensional expansion enables diversity transmission for enhanced reliability while the structured resource pairing methodology keeps the system manageable.
2Productivity
If PUCCH resources are configured for multiple antenna ports, then the transmission efficiency of uplink control information is improved, but the resource allocation overhead increases
Solution Approach 1:
The patent merges resource allocation by configuring multiple PUCCH resources (first and second resource pairs) that can be jointly used for MIMO transmission. This combining approach improves transmission efficiency through spatial diversity while the shared resource structure reduces overall allocation overhead compared to completely independent resource assignments.
Solution Approach 2:
The configured PUCCH resource pairs serve multiple functions: they can be used for single-antenna transmission, MIMO transmission, and support both ACK/NACK feedback and other uplink control information. This multi-functionality improves transmission efficiency across different scenarios while avoiding the need for separate dedicated resources for each function.
3Ease of operation
If implicit PUCCH resource allocation is used based on CCE index, then the ease of operation is improved, but the adaptability to multicarrier and MIMO scenarios is insufficient
Solution Approach 1:
The patent performs preliminary configuration of multiple PUCCH resource pairs with explicit resource indices and antenna port mappings before transmission. This advance setup maintains operational simplicity through pre-defined resource structures while providing the adaptability needed for multicarrier and MIMO scenarios through the flexible resource pair assignments.
Solution Approach 2:
The patent creates a dynamic resource allocation system where multiple PUCCH resource pairs can be selectively activated based on the number of antenna ports and carrier configurations. The system adapts to different MIMO and multicarrier scenarios by dynamically selecting appropriate resource pairs while maintaining the simplicity of implicit allocation based on CCE indices.
Data Source
AI summary
A method for transmitting uplink control information and to an apparatus therefor. The method includes: selecting one uplink control channel resource corresponding to a plurality of HARQ-ACKs from among a plurality of uplink control channel resources; and transmitting a bit value corresponding to the plurality of HARQ-ACKs using the selected uplink control channel resource.