Coordinated Repeater Resource Mapping for 5G Interference Reduction
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Solution Overview
Problem
Current 5G New Radio (NR) technology faces limitations in resource allocation and data forwarding efficiency due to overlapping time-frequency resources, which affects the decoding and forwarding of data signals through repeaters, leading to potential interference and reduced performance.
Innovation Solution
A method where a base station determines and transmits N sets of data signals to user equipment (UE) via N repeaters, using non-overlapping second time-frequency resources for forwarding, with specific resource mapping rules to ensure efficient data transmission and decoding, allowing for coordinated resource allocation across multiple repeaters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple repeaters use overlapping time-frequency resources for data forwarding, then resource utilization efficiency is improved, but interference between repeaters increases and decoding performance deteriorates
Solution Approach 1:
The patent divides the time-frequency resource space into separate sets for different repeaters. Each repeater is allocated a distinct set of time-frequency resources, preventing overlap and interference. This segmentation allows multiple repeaters to operate simultaneously without mutual interference while maintaining efficient resource utilization through coordinated allocation.
2Measurement precision
If resource mapping rules are implemented for coordinated forwarding, then decoding accuracy is improved, but system complexity increases
Solution Approach 1:
The base station pre-configures and transmits resource mapping rules to the repeaters before data transmission begins. These rules define how resources are allocated and mapped for each repeater, enabling accurate decoding at the UE without requiring complex real-time coordination. The preliminary configuration simplifies the actual transmission process while maintaining high decoding accuracy.
3Object-affected harmful factors
If N sets of data signals are transmitted via N repeaters on non-overlapping resources, then interference is reduced, but the number of resources required increases
Solution Approach 1:
The patent utilizes multiple dimensions (time, frequency, and spatial domains) to allocate resources for different repeaters. By forwarding data on different time-frequency resources and utilizing spatial separation through multiple antennas, the system reduces interference while efficiently utilizing resources. This multi-dimensional approach allows more repeaters to operate simultaneously without requiring proportionally more resources.
Data Source
AI summary
A base station determines N sets of data signals to be transmitted to a UE via N repeaters. Each set of the N sets of data signals is associated with each of the N repeaters and carries data of a plurality of layers. The base station transmits first control information to the N repeaters. The first control information indicates a first resource allocation for data reception at each repeater on a first time-frequency resource. The base station transmits N resource mapping rules to the N repeaters. The N resource mapping rules indicate each mapping from the first resource allocation to a second resource allocation for forwarding each of the N sets of data signals. Each of the N sets of data signals is received at each repeater on the first time-frequency resource. Each of the N sets of data signals is forwarded on a second time-frequency resource.