IAB BAP Routing Identity Translation Across Multi-Donor Segments
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Solution Overview
Problem
In a 3GPP R15 integrated access and backhaul (IAB) network architecture, managing multiple donor nodes leads to challenges in ensuring normal data packet transmission across network segments.
Innovation Solution
The implementation of a communication method that involves replacing the BAP routing identity of data packets at IAB nodes to adapt to different network segments managed by various donor nodes, using correspondence configurations to ensure correct routing and egress mapping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple donor nodes manage different network segments in an IAB network, then network capacity and coverage are improved, but data packet transmission reliability deteriorates due to routing identity conflicts
Solution Approach 1:
The patent divides the IAB network into multiple network segments, each managed by a different donor node. Each segment has its own BAP routing identity space, allowing independent routing management while maintaining overall network connectivity. This segmentation enables scalable network expansion without compromising transmission reliability.
Solution Approach 2:
The patent introduces a boundary node (IAB node) that acts as an intermediary between network segments managed by different donor nodes. This boundary node performs BAP routing identity translation, converting routing identities from one segment's format to another, thereby enabling seamless packet forwarding across segment boundaries while maintaining reliability.
2Ease of operation
If BAP routing identity is kept consistent across all network segments, then routing simplicity is improved, but adaptability to multi-donor network architecture deteriorates
Solution Approach 1:
The patent allows each network segment to have its own local BAP routing identity configuration optimized for that segment's specific requirements. The boundary node handles the translation between different local configurations, enabling each segment to maintain its own routing simplicity while adapting to the overall multi-donor architecture through localized identity management.
Solution Approach 2:
The patent changes the BAP routing identity parameter at boundary nodes when packets traverse between network segments. Instead of maintaining a single global routing identity scheme, the system dynamically transforms routing identity parameters to match the destination segment's requirements, enabling adaptability to diverse multi-donor configurations while preserving routing simplicity within each segment.
Data Source
AI summary
Embodiments of this application relates to a communication method and a related device. In an example, a device receives a first data packet in a first network segment, the first data packet comprises a first backhaul adaptation protocol (BAP) routing identity, and the first BAP routing identity is used for transmission of the first data packet in the first network segment. The device further obtains a first correspondence. In response to determining that the first correspondence comprises the first BAP routing identity in the first data packet, the device determines that the first data packet meets a preset condition. In response to that the first data packet meets the preset condition, the device replaces the first BAP routing identity in the first data packet with a second BAP routing identity according to the first correspondence, to obtain a second data packet.