Uplink Control Channel Configuration for 5G Resource Adaptation
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Solution Overview
Problem
Next-generation 5G radio access networks require flexible uplink control channel configurations to meet diverse usage scenarios such as enhanced mobile broadband, massive machine-type communication, and ultra-reliable and low latency communication, while efficiently utilizing limited radio resources for transmitting uplink control information from user equipment to base stations.
Innovation Solution
The solution involves configuring uplink control channels with varying numbers of symbols, such as one, two, or six symbols, and employing different transmission types like localized or distributed frequency hopping, to enable efficient resource allocation and transmission of uplink control information, allowing user equipment to adapt to specific service requirements by selecting appropriate PUCCH formats based on priority and resource availability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If flexible frame structures are designed to meet various usage scenario requirements, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent implements dynamic PUCCH resource allocation where the base station configures multiple PUCCH resource sets with different parameters (cyclic shift, orthogonal cover code, frequency hopping) and the user equipment dynamically selects appropriate resources based on the specific usage scenario requirements. This allows the system to adapt to different scenarios (eMBB, mMTC, URLLC) without hardcoding multiple fixed frame structures, resolving the contradiction between adaptability and complexity.
2Productivity
If multiple PUCCH formats with varying symbols are configured, then productivity is improved, but device complexity increases
Solution Approach 1:
The patent defines multiple PUCCH formats (Format 1, 2, 3, 4) with varying parameters including number of symbols (1-14), cyclic shift values, orthogonal cover code lengths, and frequency hopping configurations. The base station configures these parameters through RRC signaling, and the user equipment selects the appropriate format based on payload size and scenario requirements. This parameter-based approach enables high productivity through optimized transmission for each scenario while managing complexity through standardized format definitions.
3Reliability
If frequency hopping is implemented for distributed transmission, then reliability is improved, but use of energy increases
Solution Approach 1:
The patent implements dynamic frequency hopping where the hopping pattern, bandwidth, and timing are configured based on the selected PUCCH format and usage scenario. For example, Format 1 and 4 support frequency hopping with configurable hopping bandwidth and timing, while Format 2 and 3 have different hopping characteristics. The user equipment dynamically activates frequency hopping only when required by the scenario and configuration, avoiding continuous hopping that would increase energy consumption unnecessarily while maintaining reliability when needed.
Data Source
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AI summary
Provided is a method for a terminal for transmitting uplink control data. The method includes receiving, from a base station, at least one of UL control channel resource set configuration information and UL control channel transmission information, configuring an UL control channel including the UL control information based on at least one of the UL control channel resource set configuration information and the UL control channel transmission information, and transmitting the UL control channel to the base station. The UL control channel is configured with one or more UL control channel formats based on the number of symbols that configure the UL control channel.