Network Controlled Repeater TDD Configuration Flexibility
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Solution Overview
Problem
Existing 5G systems, particularly in the millimeter waveband, face challenges in enhancing cell coverage due to severe signal fading at higher carrier frequencies, and there is a lack of solutions for configuring repeaters in Time Division Duplex (TDD) configurations for flexible area utilization.
Innovation Solution
A method and device for configuring a repeater that involves receiving TDD configuration information from a network device and determining forwarding behaviors on flexible time units, allowing the repeater to flexibly utilize the flexible area and avoid conflicts between forwarding and transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the repeater uses traditional non-regenerative amplification to forward signals, then the deployment is easy and cost is low, but the repeater cannot flexibly utilize the flexible area in TDD configuration and cannot process data sufficiently
Solution Approach 1:
The repeater dynamically determines its forwarding behavior in the flexible area based on received indications from the network device. The repeater can switch between different forwarding modes (first forwarding mode and second forwarding mode) depending on the dynamic indication, enabling flexible adaptation to different network conditions and requirements while maintaining the simplicity of the overall system architecture.
Solution Approach 2:
The repeater changes its operational parameters by adjusting the buffer time duration and processing behavior based on the flexible area configuration. The repeater receives configuration information about the flexible area and adjusts its data processing and forwarding parameters accordingly, allowing it to provide sufficient processing time while maintaining deployment simplicity.
2Productivity
If the repeater performs both transmission and forwarding in the flexible area, then resource utilization is high, but conflicts arise between transmission and forwarding operations
Solution Approach 1:
The repeater divides the flexible area into different time units and segments the operations into distinct forwarding modes. By segmenting the flexible area utilization into first forwarding mode (using first time units) and second forwarding mode (using second time units), the repeater can perform transmission and forwarding operations without conflicts, ensuring reliable operation while maintaining high resource utilization.
Solution Approach 2:
The repeater receives dynamic indications from the network device before performing operations in the flexible area. This preliminary action allows the repeater to prepare its forwarding behavior in advance, avoiding conflicts between transmission and forwarding by knowing ahead of time which mode to use and when to switch between modes.
3Device complexity
If the repeater uses fixed forwarding configuration, then the system is simple to manage, but the repeater cannot respond to sudden service transmissions
Solution Approach 1:
The repeater employs dynamic configuration where the network device sends indication information to the repeater before the repeater needs to perform forwarding in the flexible area. This dynamic approach allows the system to respond to sudden service transmissions by receiving real-time indications, while the repeater maintains relatively simple local processing by following the received instructions.
Solution Approach 2:
The network device provides feedback in the form of dynamic indications to the repeater, allowing the repeater to adjust its forwarding behavior accordingly. This feedback mechanism enables the system to respond to changing conditions and sudden service transmissions while keeping the repeater's local logic simple, as it merely executes the received indications.
Data Source
AI summary
A network controlled repeater (NCR) includes: MT processor circuitry configured to receive time division duplex (TDD) configuration information from a network device; and forwarding processor circuitry configured to perform to not forwarding on a first flexible time unit.