Uplink Triggered Cell Handover Dynamic Restriction
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Solution Overview
Problem
In cellular communication systems, the application of uplink triggered cell handover functionality incurs additional processing and signaling costs, which can be substantial in scenarios where the performance gain is low or absent, necessitating a method to dynamically restrict its application to optimize resource utilization and maintain Quality of Service.
Innovation Solution
Implementing a dynamic restriction mechanism that enables or disables uplink triggered cell handover functionality based on a tradeoff between resource cost and performance gain, using criteria such as signaling resources, cell load, device speed, and data bias, to ensure efficient utilization and minimize unnecessary resource expenditure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If uplink triggered cell handover functionality is applied, then connection continuity and QoS are improved, but processing and signaling costs increase
Solution Approach 1:
The patent applies dynamics by making the uplink triggered cell handover functionality configurable and adjustable rather than always active. The network node can dynamically enable or disable the functionality based on current network conditions, device capabilities, and QoS requirements, thereby optimizing the trade-off between connection reliability and processing complexity.
Solution Approach 2:
The patent changes parameters by introducing configuration parameters that control the activation and behavior of uplink triggered handover. These parameters allow the system to adapt the handover triggering thresholds, measurement configurations, and functionality activation status based on network load, device type, and service requirements, thus managing the complexity-performance trade-off.
2Reliability
If uplink triggered cell handover functionality is applied, then connection continuity and QoS are improved, but signaling resources are consumed
Solution Approach 1:
The patent dynamically controls the activation of uplink triggered handover functionality based on current network conditions and device characteristics. By enabling the functionality only when beneficial, the system reduces unnecessary signaling resource consumption while maintaining connection continuity where needed.
Solution Approach 2:
The patent introduces configurable parameters that control the threshold and conditions for triggering uplink handover measurements and reporting. By adjusting these parameters, the system optimizes the balance between maintaining reliable connections and minimizing signaling resource usage.
3Reliability
If uplink triggered cell handover is used when downlink and uplink channel performances differ, then QoS is improved, but resource cost increases
Solution Approach 1:
The patent applies local quality by enabling uplink triggered handover functionality selectively for specific devices or network conditions where downlink and uplink channel performances differ significantly. Rather than universally applying the functionality, the system configures it locally based on device capabilities, service requirements, and channel characteristics, thus improving QoS only where necessary while minimizing resource cost.
Data Source
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AI summary
A method is disclosed for a network node of a cellular communication network adapted for application of an uplink triggered cell handover functionality. The uplink triggered cell handover functionality may comprise initiating a handover when it is determined that an uplink channel performance metric relating to a serving cell falls on a first side of (e.g. is lower than) an uplink handover threshold. The method comprises dynamically restricting application of the uplink triggered cell handover functionality based on whether a restriction criterion is met or not. The restriction criterion is based on at least one of a resource cost of the uplink triggered cell handover functionality and a performance gain of the uplink triggered cell handover functionality. For example, the method may comprise, when the UL triggered cell handover functionality is enabled, disabling the UL triggered cell handover functionality if a disabling criterion is met and, when the UL triggered cell handover functionality is disabled, enabling the UL triggered cell handover functionality if an enabling criterion is met. In some embodiments, restricting application of the uplink triggered cell handover functionality may comprise restricting the application for all wireless communication devices served by the network node. In some embodiments, restricting application of the uplink triggered cell handover functionality may comprise restricting the application for at least one specific wireless communication device served by the network node. Corresponding arrangement, network node and computer program product are also disclosed.