Radio Network Node Delay Information Handling
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Solution Overview
Problem
Current wireless communication networks face challenges in efficiently managing communication and load sharing across relay network nodes, particularly in 5G networks with dense deployments and multi-hop backhauling, where ensuring quality of service and minimizing latency is crucial.
Innovation Solution
The implementation of a method where a first radio network node transmits delay information to a second radio network node, indicating the cumulative packet delay budget for channels associated with the second node, allowing the second node to determine if it can meet the required delay requirements, and configuring packet delay budgets accordingly to ensure seamless migration and communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If wireless links are used for backhaul to enable flexible and dense deployment of cells, then deployment flexibility and density are improved, but network complexity and difficulty of managing quality of service increase
Solution Approach 1:
The patent introduces an intermediary mechanism (donor central unit acting as mediator) that manages topology adaptation and delay budget coordination between multiple network nodes. This mediator handles the complexity of managing wireless backhaul connections, allowing individual nodes to remain simple while the system as a whole achieves flexible dense deployment with controlled QoS
Solution Approach 2:
The patent implements preliminary action by having the donor central unit obtain and evaluate delay information before making topology adaptation decisions. The system proactively determines whether delay requirements can be met and configures packet delay budgets in advance, preventing performance degradation before it occurs during node migration or load balancing operations
2Productivity
If node migration or load balancing is performed in multi-hop backhaul networks, then network optimization and load distribution are improved, but risk of service interruptions and performance degradation increases
Solution Approach 1:
The patent implements feedback by having the second radio network node (target node) evaluate whether it can meet the required delay requirements and send this information back to the donor central unit. This feedback loop ensures that topology adaptation only proceeds when delay requirements can be satisfied, maintaining service continuity during node migration and load balancing operations
Solution Approach 2:
The patent applies beforehand cushioning by having the donor central unit obtain delay information and evaluate delay requirements before executing topology adaptation. This preparatory evaluation acts as a cushion that prevents service interruptions by ensuring delay requirements are met before migration or load balancing operations commence
3Reliability
If cumulative packet delay budget is configured for multi-hop channels, then quality of service assurance is improved, but signaling overhead and configuration complexity increase
Solution Approach 1:
The patent merges the delay budget configuration function at the donor central unit, which obtains delay information for multiple channels and coordinates the configuration of cumulative packet delay budgets. This consolidation reduces signaling overhead by centralizing QoS management rather than requiring separate configuration procedures for each channel in the multi-hop path
Data Source
AI summary
It is herein disclosed for example a method performed by a first radio network node (12) for handling communication in the wireless communications network (1). The first radio network node (12) transmits an indication to a second radio network node (16), indicating an obtained delay information for one or more channels associated with a second network node (15) that is conveying traffic that will be transmitted via the second radio network node (16), wherein the delay information indicates a delay between at least a plurality of network nodes. The first radio network node further receives a response from the second radio network node (16) indicating confirmation or rejection to be able to meet a requirement of delay as indicated by said transmitted indication.