Network Repeater Control Link Failure Handling for Emission Control
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Solution Overview
Problem
Existing network repeaters lose control link with base stations, leading to unwanted emissions that degrade user throughput and system capacity, and require inefficient additional signaling for reestablishment.
Innovation Solution
Network-controlled repeaters determine failure events, such as RLF, and autonomously manage forwarding operations by ceasing or resuming them based on timers and configurations, reducing unwanted emissions and signaling overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the control link between gNB and repeater is disrupted, then the repeater may provide unwanted emissions, but maintaining control link requires additional signaling overhead
Solution Approach 1:
The patent applies preliminary action by configuring the repeater with failure event parameters and thresholds in advance through RRC messaging. When a control link failure occurs, the repeater can immediately cease forwarding operations based on pre-configured instructions, eliminating unwanted emissions without requiring real-time signaling for each decision. This resolves the contradiction by preparing the system beforehand so that harmful emissions are prevented automatically without additional signaling overhead during critical moments.
2Device complexity
If the repeater operates autonomously without direct network control, then signaling overhead is reduced, but the ability to quickly respond to control link failures may be compromised
Solution Approach 1:
The patent implements feedback mechanisms where the repeater continuously monitors control link quality and compares measurements against pre-configured thresholds. When failures are detected, the repeater autonomously adjusts its forwarding operations and can report status to the network. This feedback loop enables the repeater to respond reliably to control link failures while maintaining autonomous operation, thus reducing signaling overhead without compromising reliability.
3Object-affected harmful factors
If the repeater ceases forwarding operations upon failure detection, then unwanted emissions are reduced, but service continuity may be affected
Solution Approach 1:
The patent applies dynamics by enabling the repeater to adapt its forwarding operations dynamically based on control link conditions. Rather than permanently ceasing operations, the repeater can temporarily suspend forwarding when failures are detected and resume when links are restored. The system can also dynamically adjust between different operational modes (full forwarding, partial forwarding, or cessation) based on the severity and duration of control link issues, thus balancing emission reduction with service continuity.
Data Source
AI summary
Devices and methods where a repeater device determines that a failure event has occurred, and in response to this determining, stops performing a forwarding operation. The failure event may be with respect to a control link between a network-controlled repeater and a base station, such as a radio link failure or failure to comply with a configuration.