IAB Node Cell Selection Using Upstream Access Information
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Solution Overview
Problem
The lack of an effective integrated access and backhaul (IAB) method in IAB architecture hinders successful data packet transmission in dense NR cell networks.
Innovation Solution
The current IAB node acquires information about cell access from an upstream IAB node and determines candidate cells or executes access attempts based on this information, using system messages and access control parameters to ensure successful data packet transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If IAB node attempts to access the network without cell access information from upstream nodes, then the access procedure can be initiated, but the data packet transmission cannot be successfully guaranteed
Solution Approach 1:
The patent applies preliminary action by having the upstream IAB node provide cell access information to the current IAB node before the access attempt is made. This allows the current IAB node to determine candidate cells in advance, ensuring reliable data packet transmission while maintaining a relatively simple access procedure.
2Productivity
If the IAB node uses the same carrier frequency for both access link and backhaul link, then spectrum efficiency is improved, but interference between access and backhaul transmissions increases
Solution Approach 1:
The patent applies local quality by allowing different cells to have different configurations regarding carrier frequency usage. The network can configure whether access and backhaul links use the same or different frequencies on a per-cell or per-link basis, enabling optimization of spectrum efficiency while managing interference locally where it occurs.
Data Source
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AI summary
Provided are a network access method and apparatus, a network device, and a storage medium. The network access method includes: a current integrated access and backhaul (IAB) node acquiring information about cell access from an upstream IAB node; and the current IAB node determining a candidate cell and/or executing an access attempt according to the information about the cell access.