Dynamic PUCCH Resource Allocation for 5G Uplink Control
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Solution Overview
Problem
In 5G wireless communications systems, the conventional method of reserving PUCCH resources leads to resource fragmentation and waste due to inflexible configuration, resulting in inefficient resource utilization.
Innovation Solution
A method that dynamically adjusts the indication manner of PUCCH resources based on the number of scheduled terminal devices, allowing for explicit or implicit indication, enabling flexible scheduling and reducing resource fragmentation by dividing PUCCH resources into sub-blocks and using higher layer signaling for semi-static configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If PUCCH resources are pre-configured and reserved for each downlink slot using conventional methods, then terminal devices can reliably feed back HARQ ACK/NACK information, but resource fragmentation and waste occur when the quantity of scheduled terminal devices is less than the pre-configured resources
Solution Approach 1:
The patent applies dynamics by enabling the network device to dynamically adjust the quantity of PUCCH resources allocated to terminal devices based on actual scheduling needs. Instead of static pre-configuration, the system now flexibly configures resources according to the actual number of terminal devices requiring downlink data scheduling, thereby eliminating resource waste while maintaining reliable HARQ feedback transmission.
Solution Approach 2:
The patent changes the parameter of PUCCH resource quantity from a fixed pre-configured value to a dynamically adjustable value. The network device determines the appropriate quantity of PUCCH resources based on the actual number of scheduled terminal devices, allowing the system to adapt resource allocation parameters to match actual traffic conditions and avoid both waste and fragmentation.
2Productivity
If a large quantity of PUCCH resources are pre-configured to ensure sufficient feedback capacity, then all terminal devices can simultaneously feed back HARQ information, but resource fragmentation increases and resource utilization decreases
Solution Approach 1:
The system transitions from static resource allocation to dynamic allocation where the network device adjusts PUCCH resource quantities in real-time based on scheduling requirements. This dynamic approach allows the system to maintain sufficient feedback capacity when needed while avoiding resource fragmentation when fewer devices are scheduled, thereby improving both productivity and adaptability.
Solution Approach 2:
The patent enables parameter changes in PUCCH resource configuration by allowing the network device to modify the quantity of allocated resources according to actual needs. This flexibility resolves the contradiction between maintaining high feedback capacity and avoiding resource fragmentation, as the system can adjust parameters to match current traffic conditions.
3Ease of manufacture
If PUCCH resources are fixed and cannot be flexibly configured, then resource allocation is simple and deterministic, but resource utilization is poor when scheduled devices are fewer than configured resources
Solution Approach 1:
The patent introduces dynamics into resource configuration while maintaining operational simplicity. The network device automatically determines the appropriate quantity of PUCCH resources based on the number of scheduled terminal devices, providing flexibility without complicating the configuration process. This dynamic approach significantly improves resource utilization efficiency while keeping the system easy to operate.
Data Source
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AI summary
Embodiments of the present invention relate to the communications field, and provide a resource indication method, a resource acquisition method, and a related apparatus, so that during configuration of an uplink control channel resource, a scheduling resource can be more flexibly configured and a waste of resources and resource fragmentation can be reduced, thereby improving resource utilization. The method includes: generating, by a network device, downlink control signaling, where the downlink control signaling includes indication information and resource allocation information, the resource allocation information is used for explicit indication or implicit indication of an uplink control channel resource, and the indication information is used to indicate whether an indication manner of the resource allocation information is explicit indication or implicit indication; and sending, by the network device, the downlink control signaling.