Network Switching Using UE Type and Outage Signal Detection
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Solution Overview
Problem
Conventional systems fail to provide a seamless and efficient mechanism for switching user equipment between networks, such as 4G, 5G, and 6G, especially during network outages, leading to traffic spikes and potential duplication of subscriber profiles.
Innovation Solution
A system and method involving a Home Subscriber Server (HSS) and Mobility Management Entity (MME) to generate and utilize UE-usage-type (UUT) attribute value pairs (AVPs) for determining the type of user equipment and switching it to an appropriate network based on detected outages, using parameters like RSRP, RSRQ, and SINR, and managing global flags to ensure smooth transitions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional network switching mechanisms are used, then network switching can be performed, but traffic spikes occur and subscriber profiles may be duplicated
Solution Approach 1:
The system performs preliminary actions by detecting network outages before they cause service disruption. The HSS and MME proactively identify outage conditions and initiate network switching procedures in advance, preventing traffic spikes and profile duplication by establishing switchover protocols before the outage fully impacts service delivery.
Solution Approach 2:
The system implements feedback mechanisms where the HSS and MME continuously monitor network status parameters (RSRP, RSRQ, SINR) and use this feedback to dynamically control network switching decisions. This closed-loop feedback ensures reliable service continuity while maintaining network efficiency by switching only when necessary and preventing duplicate profile creation.
2Speed
If network switching is performed without UE type determination, then switching can occur rapidly, but profile duplication occurs
Solution Approach 1:
The system performs preliminary determination of UE type (5G-capable or non-5G) before executing network switching. The MME queries the HSS for UE type information in advance of the actual switching event, ensuring that profile management rules are pre-established. This preliminary classification enables rapid switching while preventing profile duplication by ensuring each UE type follows the appropriate switching protocol.
3Reliability
If seamless network switching is implemented, then service continuity is maintained, but system complexity increases
Solution Approach 1:
The system achieves seamless network switching by implementing universal functionality in the HSS and MME that handles multiple network types (4G, 5G, and future generations) through a single unified architecture. The HSS stores universal UE type information that applies across different network generations, and the MME uses universal switching logic that adapts to various network conditions without requiring separate specialized systems for each network type.
Data Source
AI summary
The present disclosure relates to a system (100) and a method for switching user equipment(s) (UEs) between communication networks (4G, 5G, and 6G). The method includes detecting an outage (service failure or interruption in service) in a network based on a reference signal received power (RSRP), a reference signal received quality (RSRQ), and a signal-to-interference-plus-noise ratio (SINR) and switching the UE from a first network to a second network. On detecting the outage, a mobility management entity (MME) queries a home subscriber server (HSS) for the UE usage type. If the user is 4G-only, the MME selects 4G network and if the user is migrated to 4G/5G combination core, then the MME selects the 5G network. A circle-wise global flag in the HSS return “4G” for the MME query regarding the UE usage type, so the MME selects the 4G core and the user will move to the 4G network.