PUSCH Repetition Frequency Hopping Across Multiple TRPs
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing frequency resources to optimize data transmission and reception across multiple transmission and reception points, particularly in heterogeneous networks with varying traffic loads and device capabilities.
Innovation Solution
Implementing frequency hopping mechanisms across multiple transmission and reception points, including inter-slot and intra-slot frequency hopping, to dynamically allocate and reallocate frequency resources based on traffic characteristics and device capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If frequency hopping is implemented across multiple transmission and reception points, then frequency diversity and communication reliability are improved, but system complexity and synchronization requirements increase
Solution Approach 1:
The system segments the frequency spectrum into multiple hopping sets, each associated with specific transmission and reception points. This segmentation allows frequency diversity to be achieved while managing complexity through structured organization of frequency resources across multiple TP/TRP points
Solution Approach 2:
The patent implements dynamic frequency hopping where the selected hopping set can change based on channel conditions and network configuration. This dynamic adaptation improves reliability by selecting optimal frequency resources while managing complexity through algorithmic control rather than static rigid configurations
2Adaptability or versatility
If multiple transmission and reception points are used for frequency hopping, then frequency diversity is enhanced, but synchronization requirements and latency increase
Solution Approach 1:
The system performs preliminary configuration of hopping sets and synchronization parameters before actual frequency hopping occurs. This preliminary setup reduces real-time synchronization delays and enables faster adaptation when frequency changes are needed
Solution Approach 2:
The patent incorporates feedback mechanisms where transmission and reception points report channel conditions and synchronization status. This feedback enables dynamic adjustment of hopping parameters to minimize synchronization latency while maintaining frequency diversity benefits
3Productivity
If frequency hopping is dynamically adapted to traffic conditions and device capabilities, then network efficiency is improved, but protocol complexity increases
Solution Approach 1:
The system dynamically changes key parameters such as hopping set selection, frequency shift amounts, and timing offsets based on traffic conditions and device capabilities. This parameter-based adaptation improves network efficiency while managing protocol complexity by focusing adjustments on critical variables rather than rewriting entire protocols
Data Source
AI summary
A wireless device receives one or more configuration parameters indicating a mapping pattern that indicates a cyclical mapping of spatial domain transmission filters to physical uplink shared channel (PUSCH) repetitions. The wireless device receives a downlink control information (DCI) scheduling repetitions of a PUSCH transmission, where the DCI comprises a frequency hopping field set to one and indicates a frequency offset. Based on the frequency hopping field being set to one and the mapping pattern indicating the cyclical mapping, the wireless device sequentially transmits, starting from a first resource block, a first repetition of the PUSCH transmission using a first spatial domain transmission filter and a second repetition using a second spatial domain transmission filter; and sequentially transmits, starting from a second resource block, a third repetition using the first spatial domain transmission filter and a fourth repetition using the second spatial domain transmission filter.