Network-Controlled Repeater Resource Indication for 5G Interference Reduction
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Solution Overview
Problem
The 5G system faces challenges in enhancing cell coverage and reducing power consumption due to its complex nature and higher frequency deployment, leading to potential interference and reduced transmission efficiency.
Innovation Solution
A network-controlled repeater (NCR) system that communicates with network devices to dynamically configure forwarding resources, allowing flexible signal forwarding and reducing unnecessary interference and energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the 5G system is deployed on new spectrums with significantly higher frequencies to provide greater bandwidth and higher data rate, then the data rate is improved, but the signal fading during propagation becomes more serious
Solution Approach 1:
A repeater is introduced as an intermediary device between the gNB and the UE. The repeater receives signals from the gNB, amplifies them, and forwards them to the UE, thereby compensating for signal fading during propagation and improving signal quality without changing the high-frequency deployment strategy
Solution Approach 2:
The communication link is segmented into two parts: gNB to repeater, and repeater to UE. This segmentation allows the repeater to act as a relay point that can compensate for propagation losses, enabling high-frequency deployment while maintaining signal quality over extended distances
2Adaptability or versatility
If the 5G system uses more advanced multi-antenna propagation technology and corresponding transmission devices to support more flexible and complex services, then the service capability is improved, but the power consumption becomes higher
Solution Approach 1:
The repeater implements dynamic resource allocation where configuration information is received from the gNB to determine when and how to perform forwarding operations. This dynamic approach allows the system to adapt service capability to actual needs, reducing power consumption during low-traffic periods while maintaining high service capability when required
Solution Approach 2:
The system changes operational parameters dynamically based on configuration information received from the gNB. The repeater can adjust its forwarding behavior, resource usage, and power consumption levels according to network conditions and service requirements, achieving both high adaptability and energy efficiency
3Area of stationary object
If the repeater performs forwarding in all resources to maximize signal coverage, then the coverage is enhanced, but the interference to other network devices and terminal equipments increases
Solution Approach 1:
The repeater applies different forwarding behaviors to different time-frequency resources based on configuration information from the gNB. Certain resources are designated for forwarding while others are excluded, creating local quality variations that enhance coverage in needed areas while minimizing interference in other areas
Solution Approach 2:
The repeater performs forwarding only in specific resources indicated by configuration information rather than all resources. This partial action approach provides sufficient coverage enhancement in critical areas while avoiding excessive forwarding that would cause interference to other network devices and terminals
Data Source
AI summary
A repeater, comprising: a receiver configured to receive indication information from a network device, wherein the indication information indicates a starting of a first time domain resource and/or a starting of a second time domain resource and/or a starting of a third time domain resource; and processor circuitry configured to not perform forwarding in the second time domain resource according to the indication information.