RAN QoE Measurement Transfer for Overload Mitigation
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Solution Overview
Problem
Existing QoE measurement systems in RAN networks face challenges in handling overload conditions, leading to potential network congestion and inefficient resource optimization due to the inability to manage QoE measurement reporting effectively.
Innovation Solution
Implementing methods to transfer QoE measurement configuration and reporting responsibilities between RAN nodes, either within the same or different Radio Access Technologies (RATs), including changing backhaul paths and modifying reporting types, to mitigate overload conditions and ensure timely delivery of QoE reports for network optimization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If QoE measurement reporting is continued during RAN overload, then network monitoring and optimization are maintained, but network congestion and resource exhaustion occur
Solution Approach 1:
The patent introduces a secondary RAN node as an intermediary to receive and buffer QoE measurement reports when the primary RAN node is overloaded. The first RAN node transfers QoE measurement responsibilities to the second RAN node, which acts as a mediator to collect reports from UEs and forward them to the core network, thereby preventing network congestion while maintaining reporting reliability.
Solution Approach 2:
The patent segments the QoE measurement handling function by separating it from the main RAN node processing path. By creating an independent QoE measurement collection point at the second RAN node, the system divides the workload and allows QoE reporting to proceed independently from other RAN processing functions, reducing congestion impact.
2Productivity
If QoE measurement reporting is paused during RAN overload, then network congestion is reduced, but network optimization and resource reconfiguration are delayed
Solution Approach 1:
The second RAN node serves as an intermediary that maintains QoE measurement collection even when the primary RAN node is congested. This allows network optimization to continue without delay because the secondary node can still receive reports from UEs and forward them to the core network, eliminating the need to pause reporting during overload conditions.
3Object-generated harmful factors
If QoE measurement responsibilities are transferred to another RAN node, then network overload is mitigated, but system complexity increases
Solution Approach 1:
The second RAN node is designed with multi-functionality, serving both as a regular RAN node for its primary functions and as a QoE measurement collection point. This universal design allows the node to handle QoE reporting without requiring a completely separate dedicated system, thereby limiting the increase in overall system complexity while still mitigating RAN overload.
Data Source
AI summary
Systems and methods are disclosed herein for Quality of Experience (QoE) measurements handling at overload in a Radio Access Network (RAN) of a cellular communications system. In one embodiment, a method performed by a first RAN node for handling QoE measurement configuration and/or reporting during RAN overload comprises performing one or more actions related to one or more aspects of QoE measurement configuration, QoE measurement reporting, or both QoE measurement configuration and QoE measurement reporting that mitigate an RAN overload condition. In one embodiment, performing the one or more actions comprises performing one or more actions related to transfer of one or more aspects of QoE measurement configuration from the first RAN node to a second RAN node, transfer of one or more aspects of QoE measurement reporting from the first RAN node to the second RAN node, or both.