Mobile IAB Node Identification Through Mobility-State Reporting
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Solution Overview
Problem
The challenge of identifying a mobile IAB node in a 5G network is critical, as existing technologies struggle to determine the mobility state of IAB nodes, leading to potential rejection and service disruptions for user equipment (UE) when accessing the network.
Innovation Solution
A communication method where a donor node sends information to an IAB node to report its mobility state, enabling the donor node to identify whether the IAB node is mobile and determine appropriate network access, including capabilities and mobility states based on speed parameters and cell reselection/handover records.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the donor node does not have a method to identify mobile IAB nodes, then the network structure remains simple, but the UE access success rate decreases and service continuity is affected
Solution Approach 1:
The IAB node actively reports its mobility state to the donor node through feedback messages. The donor node receives mobility state information from the IAB node and uses this feedback to identify whether the IAB node is mobile, enabling reliable UE access decisions without complex passive detection mechanisms
Solution Approach 2:
The mobility state information acts as an intermediary element that carries the identification result from the IAB node to the donor node. This intermediary mechanism allows the donor node to identify mobile IAB nodes without directly monitoring or complex interaction, simplifying the overall system architecture
2Reliability
If the donor node rejects mobile IAB nodes without proper identification, then the network operation is simple, but the UE cannot access the network and network performance is affected
Solution Approach 1:
The IAB node reports its mobility state to the donor node in advance before UE access is required. This preliminary action allows the donor node to pre-identify mobile IAB nodes and prepare appropriate handling procedures, ensuring service continuity without adding operational complexity during actual UE access events
Solution Approach 2:
The IAB node autonomously determines and reports its own mobility state to the donor node. This self-service mechanism eliminates the need for complex donor node monitoring or intervention, maintaining network service continuity while preserving donor node operational simplicity
Data Source
AI summary
A communication method and apparatus are provided, so that a donor node identifies an integrated access and backhaul (IAB) node. The donor node sends first information to an IAB node. The first information indicates that the IAB node is to send a mobility state of the IAB node to the donor node. After receiving the first information, the IAB node determines the mobility state of the IAB node based on the first information, and sends the mobility state of the IAB node to the donor node. The donor node identifies, based on the mobility state of the IAB node, that the IAB node is a mobile IAB node.