Operation method of apparatus in wireless communication system and apparatus using same method
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Solution Overview
Problem
Conventional repeaters in wireless communication systems consume unnecessary power and cause interference by forwarding signals and noise across the entire frequency band, leading to inefficient operations in multi-carrier environments.
Innovation Solution
A network-controlled repeater (NCR) that receives side control information from the network to perform independent forwarding operations for each frequency band or carrier, adjusting beam directions and power usage to minimize interference and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional repeater performs forwarding operations across the entire forwarding frequency band, then the signal coverage is maintained, but unnecessary power is consumed and interference is caused to neighboring UEs/base stations
Solution Approach 1:
The forwarding frequency band is divided into multiple independent sub-bands, allowing the repeater to selectively forward signals only in the sub-bands where actual communication occurs. This segmentation enables the repeater to avoid processing and forwarding noise in unused frequency resources, thereby reducing power consumption while maintaining signal coverage in active bands.
Solution Approach 2:
Different forwarding operations are applied to different frequency sub-bands based on local conditions. The repeater adjusts its forwarding behavior (such as beam direction and power level) for each sub-band independently, optimizing performance for each local frequency region rather than applying a uniform approach across the entire band.
2Reliability
If a conventional repeater performs forwarding operations across the entire forwarding frequency band, then the signal coverage is maintained, but interference is caused to neighboring UEs/base stations
Solution Approach 1:
The forwarding frequency band is divided into multiple independent sub-bands, allowing the repeater to selectively forward signals only in the sub-bands where actual communication occurs. This segmentation enables the repeater to avoid processing and forwarding noise in unused frequency resources, thereby reducing power consumption while maintaining signal coverage in active bands.
Solution Approach 2:
Different forwarding operations are applied to different frequency sub-bands based on local conditions. The repeater adjusts its forwarding behavior (such as beam direction and power level) for each sub-band independently, optimizing performance for each local frequency region rather than applying a uniform approach across the entire band.
3Device complexity
If common side control information is applied for the entire frequency resource in a multi-carrier environment, then the operation is simplified, but effective multiplexing operation becomes difficult and unnecessary interference occurs
Solution Approach 1:
The frequency resources in multi-carrier environments are segmented into separate carriers or sub-bands, each with its own independent side control information. This allows the repeater to perform frequency-selective forwarding operations for each carrier, improving multiplexing efficiency by enabling different beam directions and power settings for different frequency resources.
Solution Approach 2:
The side control information becomes dynamic and adaptable to each frequency resource rather than being static and uniform. The network can independently control the repeater's forwarding behavior for each carrier, allowing flexible adjustment of beam directions, power levels, and operational modes according to the specific requirements of each frequency resource.
Data Source
AI summary
Provided are an NCR operation method and an apparatus in a wireless communication system. An NCR performs an initial access procedure with a network, receives side control information in a specific cell from the network, and on the basis of the information, performs a forwarding operation in at least one of a first frequency band of a first cell and a second frequency band of a second cell. The side control information is independently configured for each of the first frequency band and the second frequency band. Information for grasping the mapping relationship between the specific cell and the first and second cells is provided to the NCR in various ways.