Inter-donor Migration for Mobile IAB Nodes
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Solution Overview
Problem
Current systems face challenges in efficiently performing inter-donor migration for integrated access and backhaul (IAB) nodes, particularly in mobile IAB use scenarios where IAB nodes are mounted on vehicles, requiring flexible and reliable network management.
Innovation Solution
The proposed solution involves a system and method for migrating IAB nodes, where a first network node receives assistance information associated with the migration of an IAB entity. This information includes details such as F1 transport migration indications, mobile termination migration, and identities of involved network nodes, enabling seamless inter-donor migration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If inter-donor migration for IAB nodes is performed in mobile scenarios, then network flexibility and adaptability are improved, but system complexity and difficulty of management increase
Solution Approach 1:
The patent introduces a donor CU as an intermediary that coordinates and manages the migration process between IAB nodes and target donors. The donor CU receives migration requests, determines target donors, and orchestrates the entire migration procedure, thereby simplifying the complexity for individual nodes while enabling flexible inter-donor migration in mobile scenarios.
Solution Approach 2:
The system performs preliminary actions by pre-establishing F1 connections and preparing migration pathways before actual migration occurs. The donor CU proactively manages connection setups and migration preparations, allowing IAB nodes to migrate seamlessly without increasing operational complexity during the migration event itself.
2Reliability
If F1 connection management is maintained during IAB node migration, then connection reliability is improved, but signaling overhead and processing time increase
Solution Approach 1:
The patent maintains continuous F1 connections throughout the migration process. The donor CU ensures that F1 connections are preserved and seamlessly transferred during inter-donor migration, allowing data forwarding to continue without interruption while managing the migration signaling efficiently to minimize processing time overhead.
3Measurement precision
If assistance information is exchanged between network nodes, then migration accuracy and precision are improved, but information overhead and communication burden increase
Solution Approach 1:
The assistance information is segmented and distributed selectively among network nodes based on their specific roles and requirements. The donor CU receives and processes migration-related information, then distributes only necessary subsets to relevant IAB nodes and target donors, reducing overall information overhead while maintaining migration accuracy through targeted information exchange.
Data Source
AI summary
Presented are systems, methods, apparatuses, or computer-readable media for migrating integrated access and backhaul (IAB) nodes. A first network node may receive a first message comprising assistance information. The assistance information is associated with a migration of an integrated access and backhaul (IAB) entity.