PUSCH Repetition Mapping Across Spatial Filters for Uplink Efficiency
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing uplink channel repetitions, particularly in heterogeneous networks with varying coverage areas and traffic loads, leading to suboptimal data transmission and reception.
Innovation Solution
Implementing a mechanism for multiplexing uplink channel repetitions based on specific criteria such as wireless device capabilities, network configurations, and traffic characteristics, allowing for selective implementation of protocols to optimize data transmission in diverse network environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If uplink channel repetitions are transmitted using traditional methods in heterogeneous networks, then coverage area can be extended, but data transmission efficiency deteriorates due to suboptimal transmission parameters
Solution Approach 1:
The patent implements dynamic selection of transmission parameters including frequency hopping patterns, cyclic shift values, and orthogonal cover codes based on real-time network conditions. The wireless device adapts these parameters dynamically across different repetition instances to optimize both coverage extension and transmission efficiency in heterogeneous network environments
Solution Approach 2:
The system changes multiple transmission parameters simultaneously including physical resource block assignments, modulation schemes, and coding rates across repetition instances. These parameter variations allow the system to maintain reliable coverage extension while improving overall data transmission efficiency through adaptive optimization
2Reliability
If uplink channel repetitions are transmitted to improve reliability, then data transmission reliability is improved, but transmission latency increases
Solution Approach 1:
The patent employs periodic transmission of uplink channel repetitions with optimized intervals. By carefully selecting the periodicity and timing of repetition transmissions, the system achieves reliable data delivery through multiple opportunities while minimizing the total time required, thus reducing latency overhead
Solution Approach 2:
The system performs preliminary configuration of transmission parameters including pre-determining frequency hopping patterns and resource allocations for repetition transmissions. This advance preparation enables faster execution of repetition transmissions without requiring complex real-time decisions, thereby reducing processing latency while maintaining reliability
3Reliability
If frequency hopping is applied to uplink channel repetitions for diversity gain, then transmission robustness is improved, but spectrum efficiency deteriorates
Solution Approach 1:
The patent applies frequency hopping selectively based on local network conditions and channel characteristics. Different hopping patterns and frequency offsets are applied to different repetition instances and different wireless devices, optimizing robustness where needed while preserving spectrum efficiency in favorable conditions
Solution Approach 2:
The system designs frequency hopping patterns that serve multiple functions simultaneously: providing frequency diversity for robustness, enabling interference avoidance, and optimizing spectrum utilization. This multi-functional approach allows a single hopping mechanism to address multiple objectives without sacrificing overall spectrum efficiency
Data Source
AI summary
A wireless device may receive downlink control information (DCI) scheduling transmission of a channel state information (CSI) report on a physical uplink shared channel (PUSCH) transmission with a transport block via the cell, one or more first repetitions of the PUSCH transmission with a first spatial domain filter for the wireless device, and one or more second repetitions of the PUSCH transmission with a second spatial domain filter for the wireless device. The wireless device may transmit, via the cell, the CSI report on only an earliest repetition of the one or more first repetitions of the PUSCH transmission with the transport block, and an earliest repetition of the one or more second repetitions of the PUSCH transmission with the transport block.