Node Handover Thresholds for Network Slice Optimization
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Solution Overview
Problem
In a node, handover decisions are made based on received quality without considering the service type corresponding to a network slice, which may result in user equipment not being able to perform handover to an optimal cell for the specific service type.
Innovation Solution
A communication control method and node that receive network slice information and service quality information, determine a threshold value for handover decisions based on this information, and decide on handovers based on the threshold value and received quality values from measurement reports.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If handover decision is performed based on received quality without considering network slice information, then handover decision process is simple and fast, but handover may not be optimal for specific service types
Solution Approach 1:
The patent changes the parameter used for handover decision from a single received quality threshold to multiple thresholds corresponding to different network slices. Each network slice has its own threshold value that is determined based on service quality requirements, allowing the system to maintain fast decision-making while achieving service-specific optimality.
Solution Approach 2:
The patent segments the handover decision process by separating it into service-type-specific sub-processes. Instead of a unified handover decision, the system creates separate decision mechanisms for different network slices (e.g., eMBB, URLLC, mMTC), each with its own threshold and evaluation criteria, thereby improving service-specific optimality without significantly increasing overall system complexity.
2Reliability
If different threshold values are determined for different network slices, then handover optimality for service types is improved, but device complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-determining threshold values for different network slices before actual handover decisions are needed. The thresholds are established based on service quality requirements and stored in advance, so that during handover decision-making, the system only needs to compare received quality against the pre-established thresholds rather than performing complex real-time calculations.
Solution Approach 2:
The patent implements feedback mechanisms where the core network apparatus provides network slice information and service quality requirements back to the base station. This feedback enables the base station to determine appropriate thresholds based on actual service needs, creating a closed-loop system that adapts thresholds to real-time conditions without requiring overly complex decision-making algorithms.
Data Source
AI summary
A communication control method and a node that allow a user equipment to perform handover to an optimal cell according to a service type are provided. The communication control method includes receiving, at a node, a first message including network slice information related to a network slice and/or service quality information indicating service quality from a core network apparatus. The communication control method includes receiving, at the node, a measurement report from a user equipment. The communication control method further includes determining, at the node, a threshold value to be used for handover decision, based on the network slice information and/or the service quality information, in response to reception of the measurement report. The communication control method further includes deciding, at the node, whether to handover the user equipment, based on a received quality value indicating received quality included in the measurement report and the threshold value.