PUSCH Frequency Hopping with Segmented Resource Allocation
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Solution Overview
Problem
Existing 5G wireless communication technologies face interference issues with physical uplink shared channel (PUSCH) transmissions due to channel fading and interference, which can lead to resource fragmentation and sensitivity to dynamic events when frequency hopping is introduced, disrupting other communication elements.
Innovation Solution
Implementing inter-slot, inter-repetition, and intra-repetition frequency hopping schemes for PUSCH transmissions, where symbols are divided into portions transmitted using different frequencies, and disabling intra-repetition hopping for segmented symbols to reduce resource fragmentation and enhance channel diversity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If frequency hopping is introduced for PUSCH transmissions, then channel diversity is improved, but resource fragmentation and sensitivity to dynamic events increase
Solution Approach 1:
The PUSCH transmission is divided into multiple segments that can be frequency-hopped independently. Each segment is assigned to different frequency resources, allowing the system to achieve channel diversity while maintaining manageable resource allocation through structured segmentation of the transmission payload.
2Reliability
If intra-repetition frequency hopping is applied, then transmission reliability is improved, but resource allocation complexity increases
Solution Approach 1:
The frequency hopping pattern is made dynamic based on transmission conditions. The system adjusts whether to apply intra-repetition frequency hopping or inter-repetition frequency hopping depending on the specific transmission scenario, allowing flexible adaptation to different channel conditions and resource availability while maintaining transmission reliability.
3Reliability
If symbols are divided for frequency hopping, then channel diversity is enhanced, but transmission overhead increases
Solution Approach 1:
Multiple PUSCH transmissions are merged and frequency-hopped together as a group. By combining several transmissions and applying frequency hopping to the combined structure, the system achieves channel diversity benefits while reducing the per-transmission overhead compared to individual frequency hopping of each transmission separately.
Data Source
AI summary
Some embodiments include an apparatus, method, and computer program product for facilitating frequency hopping for physical uplink shared channel (PUSCH) communications in 5G wireless communication systems. When inter-slot and/or inter-repetition frequency hopping is used, user equipment (UE) may transmit a first portion of symbols in a first slot using a first transmission frequency indicated by a frequency domain resource allocation. The UE may transmit a second portion of symbols in a second slot using a second offset frequency. When intra-repetition frequency hopping is used and the symbols are segmented, the UE may disable the intra-repetition frequency hopping and transmit the segmented portion of symbols using a particular transmission frequency indicated by the frequency domain resource allocation. When intra-repetition frequency hopping is used and the symbols are non-segmented, the UE may apply frequency hopping to divide a portion of symbols for transmission within a repetition.