Autonomous UE Cell Change via Pre-configured Measurement Criteria
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Solution Overview
Problem
In heterogeneous wireless networks, the frequent handovers of user equipment (UE) between cells result in significant signaling overhead, leading to increased power consumption and reduced system efficiency due to the need for frequent measurement reporting, which is not effectively addressed by current technologies.
Innovation Solution
The method enables UE to perform autonomous cell changes by creating and transmitting measurement configurations that allow it to decide on cell changes without transmitting measurement reports back to the serving cell, reducing signaling overhead and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UE performs frequent measurement reporting during handovers in heterogeneous networks, then network can maintain control over cell changes and ensure service quality, but signaling overhead increases significantly and power consumption rises
Solution Approach 1:
The UE is configured with autonomous cell change capability, allowing it to independently determine and execute handovers based on pre-configured measurement criteria without continuous network intervention. The UE autonomously evaluates measurement results against configured thresholds and triggers handovers when conditions are met, eliminating the need for frequent measurement reporting to the network while maintaining service quality.
Solution Approach 2:
The network pre-configures measurement parameters, thresholds, and cell change criteria to the UE before handover scenarios occur. This preliminary configuration enables the UE to make autonomous handover decisions without real-time network signaling, reducing signaling overhead while ensuring that service quality requirements are pre-established and maintained.
2Reliability
If UE transmits measurement reports back to serving cell during each handover, then network can make informed handover decisions, but signaling overhead and system complexity increase
Solution Approach 1:
The UE is empowered to make its own handover decisions based on pre-configured criteria rather than relying on continuous network instructions. The autonomous decision-making process eliminates the need for uplink measurement report transmissions, reducing signaling overhead while maintaining handover accuracy through pre-configured measurement parameters and thresholds provided by the network.
Solution Approach 2:
The measurement reporting function is extracted from the traditional network-controlled handover process. Instead of UE continuously reporting measurements to the network for decision-making, the reporting function is replaced by autonomous UE evaluation of pre-configured criteria, removing the signaling overhead associated with measurement reports while preserving essential handover control through initial network configuration.
3Reliability
If network maintains centralized control over all cell changes, then service quality can be ensured, but system efficiency decreases due to frequent signaling exchanges
Solution Approach 1:
The handover control function is segmented between network configuration and UE execution. The network retains control by providing pre-configured measurement parameters, thresholds, and cell change criteria, while the UE independently executes handover decisions based on these configurations. This segmentation reduces signaling overhead and improves system efficiency while maintaining service quality through the network's initial control over handover parameters.
Solution Approach 2:
The handover control mechanism transitions from static centralized control to dynamic autonomous decision-making. The UE dynamically evaluates real-time measurement conditions against pre-configured criteria and autonomously executes handovers when conditions are met, improving system efficiency by eliminating frequent signaling exchanges while maintaining service quality through the dynamic adaptation to changing radio conditions.
Data Source
AI summary
A method, an apparatus and a corresponding computer program product are proposed. Wherein one of the method according to one embodiment of the invention determines at least one cell in a network sharing context of at least one user equipment with at least one other cell within the network. Then creates at least one measurement configuration being used by the at least one user equipment, wherein the at least one measurement configuration indicates at least to the at least one user equipment that it can decide whether to perform cell change without transmitting back its measurement report to its serving cell. Then method further transmits the created at least one measurement configuration to the at least one user equipment.