IAB Routing Table Generation for Data Forwarding Latency
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Solution Overview
Problem
Existing data transmission methods in integrated access and backhaul (IAB) networks are inefficient due to the need for each IAB node to dedicate resources to determine a next-hop node, leading to resource consumption and data forwarding latency.
Innovation Solution
The proposed method involves generating a routing table for the IAB network, which includes local routing tables for each IAB node with numbered local routing paths to destination nodes. This allows for efficient data packet forwarding by selecting a numbered local path and including an adaptation layer header with the destination node address and path number.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If each IAB node determines next-hop node independently, then routing flexibility is maintained, but resource consumption and latency increase
Solution Approach 1:
The patent applies preliminary action by pre-computing and storing multiple routing paths in routing tables at each IAB node before data transmission occurs. When a data packet needs to be forwarded, the node simply retrieves the next-hop information from the pre-computed routing table based on the destination address, eliminating the need for real-time path calculation and significantly reducing forwarding latency.
2Productivity
If routing tables are generated for all IAB nodes, then data forwarding efficiency improves, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the global routing problem into local routing table generation at each individual IAB node. Each node maintains its own routing table containing only the paths relevant to its local forwarding decisions, rather than one node managing all routing information for the entire network. This distributes the complexity across multiple nodes and reduces the burden on any single node.
Data Source
AI summary
Disclosed are methods, systems, apparatus, and computer programs for data transmission in an integrated access and backhaul (IAB) network. In one aspect, a method includes generating a routing table for the IAB network; determining to forward a data packet from a source IAB node to a destination IAB node; and forwarding, based on the generated routing table, the data packet from the source IAB node to the destination IAB node.