IAB Relay Forwarding with Adaptor-Layer Packet Routing
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Solution Overview
Problem
The challenge in integrated access and backhaul (IAB) architecture is how to correctly transmit and receive user equipment (UE) data through relay forwarding.
Innovation Solution
A method for performing relay forwarding on integrated access and backhaul links, involving IAB nodes and donors, includes steps such as data packet transmission, routing information acquisition, and the use of an adaptor layer to add headers with identifiers and QoS information, enabling accurate data routing and forwarding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If relay forwarding is implemented in IAB architecture, then network flexibility and deployment capability are improved, but data packet routing accuracy and reliability deteriorate due to the complex multi-hop transmission through access nodes and backhaul links
Solution Approach 1:
The patent introduces an adaptor layer as an intermediary component between the radio protocol stack layers. This adaptor layer receives data packets from upper layers, extracts routing information, and forwards them through appropriate access nodes and backhaul links in the IAB network, thereby solving the routing accuracy problem while maintaining network flexibility
Solution Approach 2:
The patent segments the data transmission process into distinct functional parts: access node transmission, backhaul link transmission, and adaptor layer processing. This segmentation allows each component to handle specific routing tasks independently, improving overall routing accuracy in the complex multi-hop IAB network
2Area of stationary object
If multiple IAB nodes are deployed to extend network coverage, then service coverage area is improved, but network complexity and data packet management difficulty worsen
Solution Approach 1:
The adaptor layer performs multiple functions including routing information extraction, data packet forwarding, and protocol adaptation across different IAB nodes. This multi-functionality simplifies network management by consolidating complex operations into a single universal component that works across all deployed nodes
3Area of stationary object
If data packets are transmitted through multiple hops via IAB nodes, then network coverage is extended, but transmission time and processing delay increase
Solution Approach 1:
The adaptor layer performs routing information extraction and packet preparation in advance before transmission through multiple hops. This preliminary processing reduces processing delays during actual data transmission through IAB nodes, thereby minimizing overall transmission time while maintaining extended network coverage
Data Source
AI summary
Provided is a method for performing relay forwarding on integrated access and backhaul (LAB) links. The method includes receiving, by a first IAB node, a data packet; and transmitting, by the first LAB node, the data packet to an IAB donor. Further provided are an information acquisition method, an IAB node, an IAB donor node and a storage medium.