User Terminal Single-Table Uplink Control Hopping Across Durations
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Solution Overview
Problem
In future radio communication systems, the efficiency of radio resource use declines when uplink control channels for multiple user terminals with different durations and starting symbols are multiplexed in the same slot due to varying hopping timings, leading to unallocated resources.
Innovation Solution
A user terminal employs a single table defining hopping timings for each uplink control channel duration, associating information for even and odd starting symbol indices to match hopping timings across channels with varying durations, thereby optimizing resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple uplink control channels with different durations and starting symbols are multiplexed in the same slot, then the system supports more user terminals and flexible configurations, but the hopping timings vary causing radio resource allocation efficiency to decline
Solution Approach 1:
The patent changes the parameter of hopping timing from being duration-dependent to being table-index-dependent. By introducing a single table that maps time resources to hopping timings regardless of channel duration, the system maintains consistent hopping patterns across different uplink control channel configurations, thereby improving resource allocation efficiency while supporting multiple user terminals.
2Adaptability or versatility
If separate hopping timing definitions are used for different uplink control channel durations, then each channel can be optimized independently, but the system complexity and processing load increase
Solution Approach 1:
The patent creates a universal hopping timing table that serves all uplink control channel durations. Instead of maintaining separate hopping timing definitions for each channel type, a single multi-functional table provides the appropriate hopping timing based on time resource index, reducing device complexity and processing load while maintaining adaptability through the table's comprehensive coverage of different channel configurations.
3Reliability
If frequency hopping is applied to uplink control channels with varying durations and starting symbols, then frequency diversity is achieved, but unallocated radio resources are created reducing overall efficiency
Solution Approach 1:
The patent changes the hopping timing determination from a duration-based parameter to a time-resource-index-based parameter. This allows frequency hopping to maintain its diversity benefit while the timing is standardized across all channels, preventing resource gaps and improving overall utilization efficiency.
Data Source
Figure 1A~1B
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AI summary
According to one aspect of the present disclosure, a user terminal has a transmitting section that transmits uplink control information (UCI) by using an uplink control channel, and a control section that controls a frequency resource for mapping the uplink control channel to use to transmit the UCI by using a single table that defines hopping timings for each duration of the uplink control channel.