Relay Apparatus Control Terminal Frequency Segmentation
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Solution Overview
Problem
Existing relay apparatuses in mobile communication systems lack an effective control technique for efficiently extending coverage, particularly in high-frequency bands where radio signals have high rectilinearity, leading to reduced base station coverage.
Innovation Solution
A relay apparatus with a control terminal that performs wireless communication with the base station to control the relay, where the control terminal transmits information on the frequency used in the backhaul link to the base station via a control link with a different frequency, allowing for appropriate control and beam management of the relay apparatus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a repeater apparatus is used to extend base station coverage in high frequency bands, then coverage area is improved, but system complexity increases due to the need for separate control mechanisms
Solution Approach 1:
The control terminal is configured to perform both control link communication with the base station and backhaul link communication with the relay apparatus using different frequencies. This multi-functionality allows a single terminal to handle both control signaling and data relay coordination, reducing the need for separate control infrastructure and simplifying the overall system architecture while maintaining coverage extension capabilities
2Device complexity
If control and backhaul links use the same frequency, then device complexity is reduced, but interference occurs between control signals and relayed signals
Solution Approach 1:
The frequency spectrum is segmented into at least two distinct frequencies: one frequency (first frequency) is dedicated exclusively to the control link between the base station and control terminal, while another frequency (second frequency) is used for the backhaul link between the base station and relay apparatus. This frequency segmentation eliminates interference between control signals and relayed signals, ensuring clear communication channels for both control and data transmission
3Measurement precision
If control terminal communicates relay information via control link, then control precision is improved, but communication overhead increases
Solution Approach 1:
The control terminal acts as an intermediary that receives control signals from the base station on the control link and translates/adapts them for the relay apparatus operating on the backhaul link. This intermediary function enables precise control of the relay apparatus while minimizing overhead by leveraging the existing control link infrastructure and efficiently packaging control information
Data Source
AI summary
A relay apparatus for use in a mobile communication system includes a relay that relays a radio signal transmitted between a base station and a user equipment, and a control terminal that performs wireless communication with the base station to control the relay. A first frequency used in a control link between the base station and the control terminal is different from a second frequency used in a backhaul link between the base station and the relay. The control terminal transmits information on the second frequency to the base station via the control link.