IAB Relay Node F1 Reconnection for Distributed Unit Migration
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Solution Overview
Problem
In integrated access and backhaul (IAB) networks, determining a target donor node for distributed unit migration is a critical issue that affects network robustness and load balancing.
Innovation Solution
A communication method and apparatus that enables a relay node to determine a target donor node for establishing an F1 connection based on configuration information, using identification and address information of parent and candidate nodes, triggered by indication information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If distributed unit migration is implemented to enhance network robustness and load balancing, then network robustness and load balancing are improved, but the complexity of determining the target donor node increases
Solution Approach 1:
The OAM device performs preliminary action by pre-configuring the first configuration information (including identification information of P parent nodes and address information of M candidate target donor nodes) before the relay node needs to determine a target donor node. This pre-configuration eliminates the need for the relay node to perform complex real-time determination, thereby resolving the contradiction between improving network robustness through migration and avoiding increased determination complexity.
Solution Approach 2:
The OAM device acts as an intermediary that provides the relay node with pre-configured information about parent nodes and candidate target donor nodes. Instead of the relay node independently determining the target donor node through complex analysis, the OAM device supplies the necessary configuration information, simplifying the relay node's task while enabling robust network migration functionality.
2Adaptability or versatility
If multiple candidate target donor nodes are provided for migration selection, then flexibility and service stability are improved, but the information processing complexity increases
Solution Approach 1:
The OAM device performs preliminary action by pre-configuring and providing the relay node with comprehensive information about M candidate target donor nodes, including their address information and correspondence with P parent nodes. This pre-provisioning of multiple candidate options gives the relay node flexibility in selection without requiring complex real-time information processing, as all necessary data is already prepared and supplied by the OAM device.
Data Source
AI summary
A communication method is provided, including: receiving first configuration information from an operation, administration, and maintenance device; when it is determined to perform distributed unit migration, determining, based on the first configuration information, address information of a target donor node corresponding to identification information of a current node; and establishing an F1 connection to the target donor node based on the address information of the target donor node.