Network-Controlled Repeater Forwarding for Multi-Carrier Interference Control
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Solution Overview
Problem
Conventional repeaters consume unnecessary power and cause interference by forwarding signals in fixed frequency bands, regardless of actual user equipment activity, leading to inefficiencies in multi-carrier environments.
Innovation Solution
A network-controlled repeater (NCR) that receives side control information independently for each frequency band, allowing adaptive beamforming, ON/OFF operations, and power control to optimize forwarding in multi-carrier environments, reducing power consumption and interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional repeater performs forwarding in the entire forwarding frequency band, then the forwarding coverage is ensured, but unnecessary power is consumed and interference is caused to neighboring UEs/base stations
Solution Approach 1:
The forwarding frequency band is segmented into multiple frequency bands, and the repeater performs forwarding operations independently in each band based on received side control information. This allows the repeater to activate only the necessary frequency bands rather than the entire band, reducing power consumption while maintaining coverage where needed.
Solution Approach 2:
The repeater dynamically adjusts its forwarding operation by receiving side control information from the network and adapting its behavior for each frequency band. The ON/OFF operation, beam direction, and other parameters are dynamically controlled based on actual user equipment activity in each band, preventing unnecessary power consumption and interference.
2Reliability
If a conventional repeater performs forwarding in the entire forwarding frequency band, then the forwarding coverage is ensured, but interference is caused to neighboring UEs/base stations
Solution Approach 1:
The forwarding frequency band is segmented into multiple frequency bands, and the repeater performs forwarding operations independently in each band based on received side control information. This allows the repeater to activate only the necessary frequency bands rather than the entire band, reducing power consumption while maintaining coverage where needed.
Solution Approach 2:
Different forwarding operations are applied to different frequency bands based on local conditions. The repeater receives side control information specific to each band and adjusts its forwarding behavior (ON/OFF, beam direction) accordingly, ensuring that interference is minimized in bands where no user equipment is active while maintaining service in bands where users are present.
3Device complexity
If common side control information is applied for the entire frequency resource in a multi-carrier environment, then the control complexity is reduced, but effective multiplexing operation becomes difficult and unnecessary interference is caused
Solution Approach 1:
The side control information is segmented and applied independently for each frequency band or carrier resource. The network transmits separate side control information for each band, allowing the repeater to perform effective multiplexing operations by activating only the necessary bands. This segmentation enables efficient resource utilization while maintaining manageable control complexity through standardized control mechanisms.
Data Source
AI summary
Provided are an operating method of NCR and an apparatus, in a wireless communication system. The NCR performs an initial access procedure with a network, receives side control information from the network, and performs a forwarding operation in at least one of a first frequency band and a second frequency band, on the basis of the side control information. Here, the side control information is independently configured for each of the first frequency band and the second frequency band.