Terminal PUCCH Resource Allocation With Variable PRI Bit Length
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Solution Overview
Problem
Existing methods for assigning control information in uplink communication, particularly in the context of 5G NR systems, face inefficiencies and challenges in achieving high reliability and scheduling flexibility, especially for ultra-reliable and low-latency communications (URLLC), due to insufficient PDCCH resources and increased blocking frequencies.
Innovation Solution
A terminal and communication method that dynamically control PUCCH resource allocation based on the variable number of PRI bits in DCI, allowing for efficient assignment of uplink resources by combining PRI values with CCE numbers, even when the number of PUCCH resources exceeds eight, thereby optimizing resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If fixed PRI bit configurations are used in existing systems, then device complexity is reduced, but resource allocation efficiency and scheduling flexibility deteriorate
Solution Approach 1:
The patent applies dynamics by making the PRI bit configuration variable rather than fixed. The number of PRI bits is dynamically determined based on the number of PUCCH resources configured, allowing the system to adapt to different resource allocation scenarios. This dynamic adjustment enables efficient resource allocation while maintaining manageable complexity through automated determination.
Solution Approach 2:
The patent changes the parameter of PRI bit length from a fixed value to a variable parameter that depends on the number of PUCCH resources. By making this parameter changeable and automatically determined, the system achieves better resource allocation efficiency without requiring manual configuration complexity, as the parameter is derived from the actual system state.
2Reliability
If the number of PUCCH resources is increased to improve reliability, then reliability is improved, but device complexity and blocking frequency increase
Solution Approach 1:
The patent uses dynamics by making the PRI bit length adaptive to the number of PUCCH resources. When more PUCCH resources are configured to improve reliability, the system automatically increases the number of PRI bits to match, preventing resource allocation conflicts and blocking frequencies without manual intervention. This dynamic adaptation maintains reliability improvements while managing complexity automatically.
Solution Approach 2:
The patent implements feedback through the automatic determination of PRI bit length based on the actual number of PUCCH resources configured in the system. This feedback mechanism ensures that the control information format always matches the actual resource allocation, preventing mismatches that would cause blocking or inefficiency, thereby maintaining reliability with increased resources.
3Productivity
If variable PRI bit configurations are implemented, then resource allocation efficiency is improved, but measurement precision and system compatibility requirements increase
Solution Approach 1:
The patent applies parameter changes by making the PRI bit length variable and automatically determined by the number of PUCCH resources. This ensures that the control information precision is always sufficient for the actual resource allocation scenario, preventing truncation or loss of allocation information. The parameter adjustment is automatic and deterministic, maintaining measurement precision while improving efficiency.
Data Source
AI summary
Provided is a terminal comprising: a control circuit which, on the basis of the size of information indicating resource allocation relating to uplink control information, controls allocation of an uplink resource with respect to the uplink control information; and a transmit circuit for transmitting the uplink control information in the uplink resource.