5G PUCCH Resource Determination via Pre-configured Time Domain Patterns
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Solution Overview
Problem
In 5G networks, the overhead of control signaling for uplink control channels is significant due to the need to indicate time domain resources for repetition Physical Uplink Control Channels (PUCCH) across multiple slots, leading to inefficiencies in resource allocation and transmission.
Innovation Solution
A method where a terminal determines a first time domain resource for PUCCH transmission using configuration information provided by the access network device, allowing it to directly utilize available resources without additional control signaling, thereby reducing overhead and improving resource management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If control signaling indicates time domain symbols or length of symbols for repetition PUCCH in each time slot, then the terminal can transmit uplink control information accurately, but the overhead of control signaling becomes very large
Solution Approach 1:
The patent extracts the time domain resource indication from dynamic control signaling and moves it to static or semi-static configuration information. The network configures multiple candidate time domain resources (starting symbols, lengths, time slot offsets) through RRC signaling or system information, and the terminal selects from these pre-configured options based on simpler dynamic indicators, thereby removing the need for detailed per-slot resource indication in control signaling.
Solution Approach 2:
The patent performs preliminary configuration of time domain resources before actual PUCCH transmission. The network pre-configures multiple candidate time domain resource patterns (including starting symbols, symbol lengths, and time slot offsets) through RRC signaling or system information broadcast. This preliminary action allows the terminal to have ready-made resource options available, eliminating the need for extensive real-time control signaling.
2Adaptability or versatility
If the repetition PUCCH occupies different quantities of time domain symbols in different time slots, then the uplink control information can be transmitted flexibly, but the control signaling overhead increases significantly
Solution Approach 1:
The patent segments the time domain resource configuration into multiple independent parameters: time slot offset, starting symbol index, and symbol length. Each parameter can be independently configured from pre-defined sets or ranges. This segmentation allows flexible combination of different time domain resources across multiple slots without requiring complete re-description of each resource allocation, thereby reducing control signaling overhead while maintaining adaptability.
Solution Approach 2:
The patent creates a universal configuration framework where a single set of configuration parameters (time slot offset, starting symbol, symbol length) can be applied across multiple time slots for repetition PUCCH transmission. The configured parameters define resource patterns that can be reused and adapted for different slots, enabling one configuration to serve multiple transmission instances with varying time domain characteristics.
Data Source
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AI summary
Provided in the embodiments of the present application are a resource determining method, apparatus, terminal, access network device, and system, the method comprising: on the basis of first configuration information and second configuration information, a terminal determines a first time domain resource occupied by an aggregate PUCCH in each time slot for sending uplink control information; and, in n time slots, sending the uplink control information to an access network device by means of the first time domain resource, n being a positive integer; the first configuration information is used for indicating second time domain resource configured by the access network device for the aggregate PUCCH, the first time domain resource belonging to the second time domain resource; and the second configuration information is used for indicating a third time domain resource configured by the access network device and used for uplink signal transmission.