Intra-slot Frequency Hopping Control for Uplink Channels
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Solution Overview
Problem
In future radio communication systems, there is a need to appropriately control the pattern of intra-slot frequency hopping for uplink channels/signals, such as PUCCH, PUSCH, and SRS, across user terminals with different access bandwidth configurations.
Innovation Solution
A user terminal is equipped with a transmitting section for uplink data channels, a receiving section for frequency resource information, and a control section that manages frequency hopping based on received information, allowing for flexible control of intra-slot frequency hopping patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If intra-slot frequency hopping is implemented for uplink channels, then frequency resource utilization and communication reliability are improved, but control complexity and difficulty of managing hopping patterns across different user terminals increase
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting frequency hopping patterns based on user terminal-specific parameters such as access bandwidth configuration. The base station configures different hopping patterns, frequency offsets, and resource allocation parameters for different user terminals, allowing the system to adapt frequency hopping behavior to individual terminal capabilities and channel conditions, thereby improving reliability without uniform complexity increase across all terminals.
Solution Approach 2:
The patent segments the frequency hopping control by dividing it into terminal-specific configurations managed separately for each user terminal. Each terminal receives individualized hopping pattern assignments based on its access bandwidth and channel conditions, allowing independent optimization of hopping parameters for different terminals rather than applying a unified complex control mechanism to all terminals simultaneously.
2Productivity
If intra-slot frequency hopping is implemented for uplink channels, then frequency resource utilization and diversity gain are improved, but the difficulty of detecting and measuring optimal hopping patterns increases
Solution Approach 1:
The patent implements feedback mechanisms where user terminals report channel quality indicators, interference measurements, and reception status back to the base station. The base station uses this feedback to detect and measure the effectiveness of different frequency hopping patterns, identifying optimal patterns based on actual channel conditions and terminal performance, thereby reducing the difficulty of detecting optimal hopping configurations.
Solution Approach 2:
The patent applies preliminary action by having the base station pre-configure and assign specific frequency hopping patterns to user terminals before actual data transmission begins. The base station performs preliminary detection and measurement of channel conditions, then assigns pre-determined hopping patterns that are optimized for those conditions, eliminating the need for real-time detection during active communication and reducing measurement complexity.
3Adaptability or versatility
If flexible frequency hopping control is implemented for each user terminal, then adaptability to different access bandwidths is improved, but device complexity and signaling overhead increase
Solution Approach 1:
The patent applies local quality by configuring frequency hopping parameters specifically tailored to each user terminal's local conditions, including its assigned access bandwidth, channel quality, and interference environment. Each terminal receives customized hopping patterns, frequency offsets, and resource allocations that are locally optimized for its specific bandwidth configuration, rather than applying uniform hopping parameters across all terminals with different bandwidths.
Solution Approach 2:
The patent implements universality by designing a unified frequency hopping control framework that can accommodate multiple user terminals with different access bandwidths using the same base station controller. The base station performs multi-functional operations including configuring hopping patterns for different bandwidths, managing resource allocations across terminals, and coordinating frequency hopping timing, thereby achieving adaptability through a universal control mechanism rather than requiring separate specialized systems for each terminal type.
Data Source
AI summary
The present invention is designated to appropriately control intra-slot frequency hopping of an uplink channel/signal. A user terminal of the present invention includes a transmitting section that transmits an uplink data channel in one slot or over a plurality of slots, a receiving section that receives information related to frequency resource to which the uplink data channel is to be mapped, and a control section that controls frequency hopping of the uplink data channel in each slot, based on the information related to the frequency resource.