AMF Entity UE Redirection for 5G Energy Saving
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Solution Overview
Problem
Current 5G mobile communication systems lack efficient mechanisms for redirecting user equipment (UE) to alternative access and mobility management function (AMF) entities when the source AMF needs to reduce its capacity due to energy constraints.
Innovation Solution
The proposed solution involves a method where an access and mobility management function (AMF) entity determines whether to reduce its capacity based on energy-related information. If a reduction is necessary, the AMF determines whether to redirect at least one user equipment (UE) to another AMF, considering subscription information, and triggers the redirection procedure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the AMF entity maintains full capacity to serve all UEs, then service reliability is improved, but energy consumption increases
Solution Approach 1:
The AMF entity dynamically adjusts its capacity based on energy conditions by selectively redirecting UEs to alternative AMFs. This dynamic adaptation allows the system to maintain service reliability when needed while reducing energy consumption when energy resources are constrained, resolving the contradiction between maintaining full capacity and reducing energy use.
Solution Approach 2:
The patent introduces an intermediary redirection mechanism where the source AMF redirects UEs to target AMFs based on energy conditions. This intermediary approach allows the source AMF to reduce its energy consumption by offloading UEs while maintaining service reliability through the target AMF, thus resolving the contradiction between energy consumption and service reliability.
2Use of energy by moving object
If the AMF entity redirects UEs to alternative AMFs to reduce energy consumption, then energy efficiency is improved, but system complexity increases
Solution Approach 1:
The patent segments the AMF functionality by introducing separate source AMF and target AMF entities. The source AMF handles energy management and redirection decisions, while target AMFs handle UE service delivery. This segmentation allows energy efficiency improvement through selective redirection while managing system complexity by distributing functions across multiple entities.
Solution Approach 2:
The patent changes the operational parameters of the AMF entity by introducing energy condition-based redirection. The system monitors energy conditions and adjusts its behavior (redirecting UEs or maintaining normal operation) based on these parameter changes. This approach improves energy efficiency while managing system complexity through parameter-based control rather than structural overhauls.
3Loss of energy
If the AMF entity implements dynamic capacity adjustment based on energy conditions, then energy saving is improved, but control complexity increases
Solution Approach 1:
The patent implements a feedback mechanism where the source AMF monitors energy conditions and adjusts its capacity by redirecting UEs to target AMFs. The feedback loop involves detecting energy conditions, making redirection decisions, and executing the capacity adjustment. This feedback-based approach improves energy saving while managing control complexity through automated decision-making based on monitored conditions.
Data Source
AI summary
The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. A method for energy saving in a network is provided. The method includes determining, based on energy information associated with a first network node, that the capacity of the first network node should be reduced, based on the determining, selecting a second network node, and redirecting a UE from the first network node to the second network node.