PUCCH Resource Determination Formula for Wireless Uplink Control
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Solution Overview
Problem
The increasing number of user equipment (UEs) and uplink data in wireless communication systems poses a challenge for base stations (BS) to efficiently manage finite radio resources for data and control information transmission.
Innovation Solution
A method and apparatus for efficiently transmitting and receiving uplink signals by using specific formulas to determine Physical Uplink Control Channel (PUCCH) resources based on received parameters, such as nCCE, N(1)PUCCH, and X, to prevent resource collisions and optimize resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the number of user equipment and uplink data increases, then data throughput demand increases, but radio resource management becomes more difficult
Solution Approach 1:
The patent changes the parameter mapping relationship between PDCCH and PUCCH resources by introducing a new determination formula that considers multiple parameters (nCCE, N(1)PUCCH, X) instead of simple one-to-one mapping. This allows more flexible resource allocation to accommodate increased data throughput demands while managing radio resources more efficiently
Solution Approach 2:
The patent segments the PUCCH resource space by introducing multiple determination formulas for different transmission modes and scenarios. This segmentation allows independent optimization of resource allocation for different types of uplink control information, reducing overall resource management complexity while supporting higher throughput
2Productivity
If PUCCH resources are allocated dynamically, then resource usage efficiency improves, but resource collisions increase
Solution Approach 1:
The patent implements a feedback mechanism where the base station determines PUCCH resources based on parameters received from UE (such as nCCE from PDCCH), and the UE adjusts its PUCCH resource selection based on downlink control information. This feedback loop enables dynamic resource allocation while maintaining collision avoidance through coordinated resource selection
Solution Approach 2:
The patent introduces parameter X as an intermediary element that mediates between PDCCH resources and PUCCH resources. This intermediary parameter allows indirect mapping that reduces direct collisions while maintaining efficient resource usage, acting as a buffer between the downlink and uplink resource allocation processes
Data Source
AI summary
In the present invention, a physical uplink control channel (PUCCH) resource, which is used for transmitting acknowledgement/negative ACK (ACK/NACK) information related to downlink control information, is determined on the basis of n(1)PUCCH=f(nCCE,N(1)PUCCH,X), when the format of the downlink control information that is transmitted/received through a physical downlink control channel (PDCCH) is in accordance with a transmission mode of a user equipment, wherein n(1)PUCCH is a PUCCH resource index, N(1)PUCCH is a value which is received from the base station, nCCE is a first control channel element (CCE) index in the PDCCH, X is a parameter which is not the nCCE and the N(1)PUCCH, and wherein f is a function having the nCCE, N(1)PUCCH, and the X as a factor.