Relay Node Carrier Aggregation Reconfiguration
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Solution Overview
Problem
Current relay systems face challenges in dynamically changing component carriers on the access and backhaul links, leading to potential bottlenecks and disruptions in communication, as existing mechanisms do not adequately address the need for resource partitioning updates during operation phase changes.
Innovation Solution
Implementing a control device within relay nodes and donor eNBs to detect changes in component carriers and initiate reconfiguration through update information and reconfiguration instructions, allowing for continuous operation without tearing down and rebuilding RRC connections, using RRC, X2/S1 application protocols, and MAC mechanisms to manage resource partitioning on both access and backhaul links.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If dynamic component carrier change is implemented on access or backhaul links, then carrier aggregation capacity is improved, but system complexity and reconfiguration management difficulty increase
Solution Approach 1:
The patent segments the reconfiguration process into independent per-carrier operations. Each component carrier can be detected, updated, and reconfigured separately through individual update information messages, rather than requiring system-wide reconfiguration. This allows the relay node to manage multiple carriers independently, reducing overall system complexity while maintaining aggregation capacity.
Solution Approach 2:
The patent implements dynamic component carrier reconfiguration where the relay node can detect changes in individual carriers and initiate reconfiguration only when needed. The system transitions from static carrier configuration to dynamic adaptation, allowing carriers to be added, removed, or modified based on real-time conditions without reconfiguring the entire system.
2Adaptability or versatility
If component carrier changes are made during operation phase, then system adaptability is improved, but risk of communication disruption increases
Solution Approach 1:
The patent sends update information to the network device before actually reconfiguring the component carrier. This preliminary notification allows the network to prepare for the change and coordinate the reconfiguration timing, ensuring that carrier changes occur in a controlled manner that maintains communication continuity rather than causing disruptions.
Solution Approach 2:
The patent implements a feedback mechanism where the relay node detects carrier changes and sends update information to the network device, which then provides reconfiguration instructions. This closed-loop feedback ensures that changes are coordinated between the relay node and network, maintaining reliability while enabling adaptability.
Data Source
AI summary
The present invention proposes methods and devices to further improve relay systems operating on the basis of carrier aggregation on the access as well as on the backhaul link. Under an aspect of such approach, there is proposed a relay node as a device, comprising a transceiver device, configured to communicate via a first interface with a terminal and via a second interface with a remote network device, wherein communication via the first and/or second interface is configured to operate based on aggregation of plural individual component carriers, and a control device, configured to perform, per component carrier: detection of a change concerning a component carrier on the first interface, sending, responsive thereto, of update information pertaining to at least the first interface towards the remote network device, reception of reconfiguration instructions, implied by the detected change, to be applied on the first interface, and initiation of reconfiguration of the first interface based on the received instructions. Similar approach is applied to a donor eNB as well as to corresponding methods and computer program products.