Flexible PUCCH Repetition Configuration for 5G Uplink Control
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Solution Overview
Problem
The current method for configuring the quantity of repeated transmissions for PUCCH in 5G mobile communication is not flexible enough, leading to reduced resource utilization.
Innovation Solution
The method involves a terminal device receiving indication information from a network device to determine a first PUCCH resource and the quantity of repeated transmissions, allowing for flexible configuration of repeated transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the network device configures a fixed quantity of repeated transmissions for PUCCH, then transmission reliability is ensured, but resource utilization is reduced and flexibility is lost
Solution Approach 1:
The patent applies dynamics by making the quantity of repeated transmissions adjustable rather than fixed. The terminal device can dynamically select different repetition quantities based on channel conditions and service requirements, while the network device can also dynamically indicate the quantity through DCI. This transforms the static configuration into a dynamic parameter that adapts to varying conditions, resolving the contradiction between reliability (needing repetitions) and flexibility (needing adaptability).
Solution Approach 2:
The patent changes the parameter of repetition quantity from a fixed configured value to a variable that can be adjusted through multiple mechanisms. The terminal device determines the quantity based on channel quality, and the network device can override or adjust this through DCI indication. This parameter change enables the system to maintain reliability when needed while achieving flexibility when conditions permit, resolving the technical contradiction.
2Reliability
If the terminal device repeatedly transmits PUCCH in N uplink slots, then transmission reliability is improved, but transmission delay increases
Solution Approach 1:
The patent makes the repetition quantity dynamic rather than fixed at N slots. The terminal device can adaptively reduce repetitions when channel conditions are good, and the network device can indicate reduced repetitions through DCI. This dynamic adjustment reduces unnecessary time consumption while maintaining reliability when needed, resolving the contradiction between reliability and transmission delay.
Solution Approach 2:
The patent applies partial action by allowing the terminal device to transmit fewer repetitions than the maximum configured N when channel conditions permit. Instead of always performing full repeated transmissions, the system performs only the necessary minimum repetitions to achieve required reliability, thereby reducing transmission delay while maintaining adequate reliability through adaptive selection.
3Ease of manufacture
If the network device preconfigures PUCCH resources, then resource allocation is simplified, but resource utilization efficiency is reduced
Solution Approach 1:
The patent introduces dynamics into the resource allocation process. While PUCCH resources are preconfigured for simplicity, the actual quantity of repetitions used is dynamically determined by the terminal device based on channel conditions and can be further adjusted by network indication via DCI. This dynamic usage of preconfigured resources improves utilization efficiency without complicating the configuration process, resolving the contradiction between simplicity and efficiency.
Data Source
AI summary
An uplink control information transmission method are described. The method includes: receiving indication information, where the indication information is used to indicate a first physical uplink control channel (PUCCH) resource and a quantity N of repeated transmissions. The method further includes determining the first PUCCH resource and the quantity N of repeated transmissions in at least one PUCCH resource set based on the indication information; and repeatedly sending uplink control information uplink control information (UCI) for M times by using the first PUCCH resource and the quantity N of repeated transmissions.