Relay Node Backhaul Failure Notification Control
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Solution Overview
Problem
In cellular communication systems, existing methods fail to efficiently manage backhaul link failures and recovery processes, particularly in scenarios with dual connectivity configurations, leading to redundant processing and potential service disruptions.
Innovation Solution
A communication control method where a relay node detects backhaul link failures and determines whether local rerouting is possible, deciding whether to transmit notifications to child nodes, thereby optimizing the recovery process and reducing redundant processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a relay node transmits failure notifications to child nodes in dual connectivity configurations, then network reliability is improved through comprehensive failure awareness, but redundant processing occurs when the relay node cannot perform uplink rerouting
Solution Approach 1:
The patent applies partial action by selectively transmitting failure notifications only when the relay node is capable of uplink rerouting. When rerouting capability is absent, the notification transmission is omitted to avoid redundant processing. This selective approach balances reliability improvement with complexity reduction by performing the notification action only when it adds value.
2Stability of the object's composition
If a relay node transmits recovery attempt notifications to child nodes, then network stability is improved through timely recovery information propagation, but service disruptions may occur due to unnecessary processing when uplink rerouting is not possible
Solution Approach 1:
The relay node performs self-assessment of its uplink rerouting capability before transmitting recovery notifications. This self-service mechanism allows the node to autonomously determine whether notification transmission will be beneficial or redundant, eliminating unnecessary processing that would cause service disruptions while maintaining network stability through appropriate notification propagation.
3Difficulty of detecting and measuring
If a relay node with dual connectivity detects backhaul link failures, then failure detection capability is improved, but notification management becomes complex when uplink rerouting capability is limited
Solution Approach 1:
The patent applies local quality by differentiating notification transmission behavior based on the relay node's local rerouting capability. Nodes with rerouting capability transmit failure notifications to enable network-wide awareness, while nodes without such capability omit notifications to avoid redundant processing. This localized adaptation simplifies notification management while maintaining effective failure detection across the network.
Data Source
AI summary
In a first aspect, a communication control method is used in a cellular communication system. The communication control method includes: detecting, by a relay node, an occurrence of a failure in a backhaul link between the relay node and one of parent nodes of a first parent node and a second parent node, the relay node being configured with dual connectivity for the first parent node and the second parent node; and transmitting, by the relay node, a notification relating to detection of the failure to a child node of the relay node, when the relay node is not capable of uplink rerouting.