Radio Access Node Handover for Quality of Service
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Solution Overview
Problem
Current mobile communications networks, particularly 5G, often fail to provide the required quality of service for real-time data packet sessions such as voice or video calls, leading to issues with resource availability and network coverage, especially during the initial deployment of new networks.
Innovation Solution
A method is introduced where a radio access node detects the inability to handle a data packet session with the required quality of service and triggers a handover to another packet-switched network, informing the mobile entity that resources will be available after the handover, allowing the session to be established with a delay expectation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a mobile entity camps on a 5G radio access network during initial deployment, then the network provides higher capacity and data rates, but the network cannot assure quality of service for real-time data packet sessions such as voice or video calls
Solution Approach 1:
The network performs preliminary assessment of quality of service requirements before allowing the mobile entity to establish real-time data packet sessions. The radio access node evaluates whether the current network can meet the required quality of service and triggers handover in advance if requirements cannot be met, preventing service degradation rather than reacting after the problem occurs.
2Device complexity
If the 5G radio access network is used for voice calls during initial deployment, then the network architecture is simplified, but the lack of voice support causes mobile entities to always camp on LTE
Solution Approach 1:
The system dynamically adapts the network selection based on the mobile entity's service requirements. Instead of a static configuration where 5G is always preferred or LTE is always used for voice, the radio access node makes dynamic decisions about handover to LTE when quality of service requirements cannot be met, and allows camping on 5G when requirements are satisfied, making the system flexible and adaptive to changing conditions.
3Reliability
If a handover is triggered from 5G to LTE network, then quality of service for real-time data packet sessions is ensured, but the data packet session establishment is delayed
Solution Approach 1:
The network performs preliminary assessment of quality of service requirements before allowing the mobile entity to establish real-time data packet sessions. The radio access node evaluates whether the current network can meet the required quality of service and triggers handover in advance if requirements cannot be met, preventing service degradation rather than reacting after the problem occurs.
Data Source
AI summary
The application relates to a method for operating a first radio access node 100 of a first packet switched mobile communications network. The first radio access node receives a request for establishing a data packet session requiring a defined quality of service and determines that the data packet session cannot be handled by the first packet switched communications network. The first radio access node triggers a hand over to a second packet switched mobile communications network based on the determining and transmits an indication towards a mobile entity (200) involved in the data packet session indicating that a resource for the data packet session will be available when the handover is completed.