User Terminal PRG Partitioning for Flexible Frequency Bands
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Solution Overview
Problem
The challenge in future radio communication systems, such as NR, is how to appropriately control the configuration of precoding groups when frequency bands are flexibly configured, which can lead to deteriorated communication quality.
Innovation Solution
The solution involves controlling the configuration of precoding groups by considering the frequency band used for communication, partitioning resource blocks into precoding groups based on contiguous resource blocks, and determining the start position of these groups to ensure appropriate reception processing, particularly for signals like SIB 1 during initial access, handover, or secondary cell addition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If frequency bands are flexibly configured to support various services with different requirements, then adaptability is improved, but precoding group configuration control becomes complex and communication quality deteriorates
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the precoding resource block group (PRG) size based on the configured bandwidth. When bandwidth is flexibly configured, the system automatically adapts the PRG size parameter to maintain appropriate precoding granularity. This resolves the contradiction by changing the precoding configuration parameters to match the flexible bandwidth configuration, thereby maintaining communication quality while supporting various services.
2Adaptability or versatility
If frequency bands are flexibly configured, then service versatility is improved, but communication quality deteriorates due to inadequate precoding group configuration
Solution Approach 1:
The system dynamically adjusts precoding configuration parameters based on the active bandwidth configuration. When bandwidth changes to support different services, the PRG size is recalibrated to ensure appropriate precoding accuracy is maintained, thereby preserving communication quality across diverse service scenarios.
Solution Approach 2:
The patent implements dynamic adaptation where the precoding group configuration is not fixed but adjusts in response to bandwidth configuration changes. This dynamic behavior allows the system to maintain optimal precoding performance regardless of whether the bandwidth is narrow or wide, ensuring reliable communication quality while supporting service versatility.
3Speed
If precoding groups are configured for wide bandwidths, then high speed data transmission is improved, but precoding accuracy deteriorates without proper group configuration
Solution Approach 1:
The patent applies segmentation by dividing the wide bandwidth into multiple precoding resource block groups. Instead of applying a single precoding matrix across the entire wide bandwidth, the system segments the bandwidth into smaller groups, each with its own precoding configuration. This maintains precoding accuracy across wide bandwidths while enabling high-speed data transmission.
Solution Approach 2:
The system adjusts the PRG size parameter based on the bandwidth configuration to optimize the balance between transmission speed and precoding accuracy. For wide bandwidths, appropriate PRG sizing ensures that each segment maintains sufficient precoding precision while the overall system achieves high data rates.
Data Source
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AI summary
To appropriately perform communication that uses a precoding group in a future radio communication system, a user terminal according to one aspect of the present disclosure includes: a receiving section that receives a downlink shared channel precoded per Precoding Resource Group (PRG) configured to include a given number of frequency resources; and a control section that controls the reception of the downlink shared channel that is scheduled by a downlink control channel of a control resource set configured by common information of a downlink control channel configuration, and includes the PRG partitioned from a given resource number included in the control resource set or an initial downlink BWP