PUCCH Resource Allocation via PDCCH Indicator
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in transmitting and receiving control information, particularly in determining the appropriate resource blocks and indices for physical uplink control channels (PUCCH) in wireless communication systems.
Innovation Solution
The method involves receiving indication information related to a PUCCH resource set through system information, using a physical downlink control channel (PDCCH) resource indicator to determine the resource block index and cyclic shift index of the PUCCH, and employing a combination of bit values from the resource indicator to select the appropriate PUCCH resources for transmission or reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional methods are used for determining PUCCH resources, then the system maintains basic functionality, but the efficiency of control information transmission is insufficient
Solution Approach 1:
The patent changes the parameters used for PUCCH resource determination from traditional methods to a new approach based on PDCCH resource indicator values. Specifically, it uses the resource indicator field in DCI to directly indicate PUCCH resource sets and formats, and employs the starting CCE index of PDCCH to determine cyclic shift values. This parameter transformation improves transmission efficiency by enabling more precise and flexible resource allocation while maintaining system functionality.
2Measurement precision
If PUCCH resources are allocated with fine granularity, then control information transmission precision is improved, but the complexity of resource management increases
Solution Approach 1:
The patent introduces the PDCCH resource indicator as an intermediary element that bridges the gap between downlink control information and uplink control channel resources. The resource indicator field in DCI serves as a mediator that compactly encodes PUCCH resource set indices and format information. This intermediary mechanism enables precise resource allocation without requiring complex direct mapping, as the intermediary structure organizes and simplifies the relationship between control signals and allocated resources.
Solution Approach 2:
The patent segments PUCCH resources into multiple resource sets, where each set contains resources with specific characteristics (e.g., different formats, cyclic shifts, or resource blocks). The PDCCH resource indicator selectively indicates which resource set to use, enabling fine-grained control over PUCCH allocation. This segmentation approach improves precision by allowing targeted selection of appropriate resources for different control information types while reducing overall management complexity through structured organization.
3Adaptability or versatility
If multiple PUCCH resource sets are configured, then the adaptability of the system is improved, but the difficulty of resource determination increases
Solution Approach 1:
The patent implements a feedback mechanism where the PDCCH resource indicator provides explicit information about which PUCCH resource set should be used. The resource indicator field in the DCI contains encoded information about the selected resource set index and format, creating a direct feedback loop from the scheduling decision to the uplink resource selection. This feedback approach simplifies resource determination despite multiple configured sets, as the indicator directly specifies the appropriate resources based on current downlink scheduling conditions, reducing the complexity of selecting from multiple options.
Data Source
AI summary
The present invention relates to a wireless communication system, and more particularly, to a method including receiving indication information related to a PUCCH resource set of a specific PUCCH format through system information, the PUCCH resource set comprising a first RB offset, receiving a PDCCH including a resource indicator RI through CCE, and transmitting the control information on the PUCCH, wherein an RB index of the PUCCH is determined based on the first RB offset and a second RB offset related to a first bit value of the RI, and wherein a CS index of the PUCCH is determined based on a combination of [a second bit value of the RI, a 1-bit value based on a starting CCE index of the PDCCH (hereinafter, a CCE-based 1-bit value)] in a CS index set, and an apparatus therefor.