Multi-Resource PUCCH Transmission for Flexible UCI Beam Diversity
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Solution Overview
Problem
In wireless communication networks, particularly in enhanced mobile broadband (eMBB) and ultra-reliable low-latency communications (URLLC) scenarios, the flexibility and beam diversity gain of uplink control information (UCI) transmission are limited due to the use of a single uplink control channel resource, which hinders effective transmission reliability and throughput.
Innovation Solution
A method and apparatus that utilize downlink control information (DCI) to indicate multiple target uplink control channel resources, allowing for flexible and diverse UCI transmission by configuring at least two PUCCH resources based on payload size and beam directions, with optional transmission repetitions and intra-slot frequency hopping to manage overlaps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If UCI is transmitted through only one uplink control channel resource with a single beam, then the device complexity is reduced, but the flexibility and beam diversity gain of UCI transmission deteriorates
Solution Approach 1:
The patent implements dynamic selection of uplink control channel resources and beams based on downlink control information. The terminal device dynamically determines which PUCCH resource and beam to use for UCI transmission, allowing the system to adapt to different transmission scenarios and optimize performance while managing complexity through conditional logic rather than fixed configurations
Solution Approach 2:
The patent changes the parameter of uplink control channel resource selection from fixed single-resource to multi-resource indication through downlink control information. By modifying the resource indication mechanism and allowing dynamic switching between multiple PUCCH resources and beams, the system achieves both flexibility and controlled complexity
2Device complexity
If UCI is transmitted through only one uplink control channel resource with a single beam, then the device complexity is reduced, but the transmission reliability deteriorates
Solution Approach 1:
The patent enables dynamic adaptation of UCI transmission parameters based on channel conditions and downlink control information. The terminal device can dynamically select from multiple configured PUCCH resources and beams, optimizing transmission reliability for different scenarios while avoiding the need for complex redundant transmission mechanisms in all cases
Solution Approach 2:
The patent pre-configures multiple uplink control channel resources and beams before transmission is needed. This beforehand preparation allows the system to quickly switch to alternative resources if the primary transmission fails, providing reliability cushioning without requiring complex real-time decision-making or redundant transmission protocols
3Adaptability or versatility
If multiple uplink control channel resources are indicated for UCI transmission, then the flexibility and beam diversity gain are improved, but the device complexity increases
Solution Approach 1:
The patent implements dynamic resource selection where the terminal device determines the appropriate PUCCH resource and beam based on received downlink control information. This dynamic approach provides flexibility to adapt to different transmission scenarios while managing complexity through conditional selection logic rather than requiring all resources to be simultaneously active
Solution Approach 2:
The patent modifies the resource indication parameter from single-resource to multi-resource through downlink control information. By changing how resources are indicated and selected, the system achieves enhanced flexibility while controlling complexity through parameter-based management rather than structural complexity
4Reliability
If multiple uplink control channel resources are indicated for UCI transmission, then the transmission reliability is improved, but the device complexity increases
Solution Approach 1:
The patent pre-configures multiple uplink control channel resources and beams before transmission is needed. This beforehand preparation provides reliability cushioning by having alternative resources ready, while managing complexity through pre-established configurations rather than requiring complex real-time resource management or redundant transmission protocols
Solution Approach 2:
The patent enables dynamic selection among pre-configured multiple PUCCH resources based on downlink control information and transmission conditions. This dynamic selection approach improves reliability by adapting to channel conditions while avoiding the complexity of simultaneously managing all resources, as only one resource is actively used per transmission
Data Source
AI summary
Provided are a control information transmission method and apparatus, a communication node, and a storage medium. The method includes the following: acquiring downlink control information, where the downlink control information is configured to indicate at least two target uplink control channel resources in a target resource set; and transmitting uplink control information based on the target uplink control channel resources.