IAB Radio Node FDM Resource Allocation Under Dynamic Availability
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Solution Overview
Problem
The challenge in radio communication nodes with integrated access and backhaul (IAB) is determining whether frequency resources allocated to the DU can be used for simultaneous transmission and reception with the MT using frequency division multiplexing (FDM), especially when the resources are dynamically designated as available or not.
Innovation Solution
A radio communication node that includes a receiving unit to receive resource information indicating the availability of frequency resources, allowing the control unit to establish radio links based on specific types that designate frequency resource availability, and allocate these resources when they are not already allocated to higher nodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If frequency resources are dynamically designated as available or not available, then resource flexibility and adaptability are improved, but the ability to determine whether frequency resources can be applied to simultaneous transmission and reception deteriorates
Solution Approach 1:
The patent introduces a feedback mechanism where the IAB node receives resource information from the network indicating the availability status of frequency resources. This feedback allows the IAB node to reliably determine whether frequency resources can be applied to simultaneous transmission and reception, resolving the contradiction between resource flexibility and determination reliability.
Solution Approach 2:
The patent implements preliminary action by having the network provide advance information about frequency resource availability before the IAB node needs to make allocation decisions. This allows the IAB node to prepare and configure resources in advance, ensuring reliable determination of resource applicability while maintaining flexibility.
2Productivity
If frequency resources are allocated to the DU, then backhaul communication capability is improved, but the ability to allocate resources for simultaneous MT transmission and reception deteriorates
Solution Approach 1:
The patent applies dynamics by enabling the IAB node to dynamically adjust frequency resource allocation between the DU and MT based on real-time availability information. The control unit can flexibly allocate resources to either function depending on current network conditions, maintaining both backhaul capability and operational ease.
Solution Approach 2:
The patent utilizes parameter changes by modifying the allocation status of frequency resources based on availability indicators received from the network. The control unit changes resource parameters (allocated to DU or MT) according to dynamic conditions, resolving the contradiction between maintaining backhaul capability and ease of resource allocation.
Data Source
AI summary
A radio communication node receives resource information indicating a type of resources allocated to a radio link with a lower node from a network and establishes the radio link based on the resource information. The type of resources includes a specific type that can designate availability of a frequency resource in a frequency direction. When the frequency resource is the specific type, the radio communication node can receive the resource information indicating the availability of the frequency resource.