Satellite HPLMN Control for Discontinuous Coverage Switching
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Solution Overview
Problem
Current mobile communication systems face challenges in managing Home Public Land Mobile Network (HPLMN) control for discontinuous coverage in satellite access networks, leading to issues such as data session halts, network congestion, and inefficient handover procedures during satellite access discontinuity.
Innovation Solution
A method and apparatus for HPLMN control in satellite access networks, involving a discontinuous coverage controller that manages a DisCoNoserviceapplicability parameter to determine whether a UE remains in no service or selects an alternate network during discontinuous coverage, based on network configuration and UE-specific factors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the UE remains in no service during discontinuous coverage, then power consumption is reduced and network congestion is minimized, but service continuity is interrupted
Solution Approach 1:
The patent implements dynamic behavior adjustment by introducing a parameter that allows the UE to switch between two operational states: remaining in no service mode to save power, or performing PLMN selection to maintain service continuity. This dynamic state transition enables the system to adapt to different coverage conditions and service requirements, resolving the contradiction between power saving and service continuity.
2Reliability
If the UE performs PLMN selection during discontinuous coverage, then service continuity is maintained, but network congestion increases and power consumption rises
Solution Approach 1:
The patent applies local quality by making the PLMN selection behavior UE-specific through the introduction of a configurable parameter. Instead of all UEs performing PLMN selection uniformly during discontinuous coverage, each UE can be individually configured to either remain in no service or perform PLMN selection. This localized differentiation allows the network to control the quantity of UEs attempting to camp on alternate networks, thereby managing network congestion while maintaining service continuity for those who need it.
3Reliability
If the UE performs PLMN selection during discontinuous coverage, then service continuity is maintained, but device complexity increases
Solution Approach 1:
The patent simplifies device complexity by changing the parameter representation from a complex multi-bit indicator to a simple single-bit parameter. This parameter can take only two values: one indicating the UE should remain in no service, and the other indicating the UE should perform PLMN selection. This parameter change reduces the complexity of the handover procedure while maintaining the ability to provide service continuity when needed.
Data Source
AI summary
Embodiments herein provide methods for HPLMN control for discontinuous coverage in satellite access network by UE. The method includes determining whether DisCoNoserviceapplicability parameter is set to a value corresponding to true to indicate that UE remain in no service or whether parameter is set to a value corresponding to false to indicate that UE selects and camps on alternate network. In an embodiment, the method includes remaining in no service during discontinuous coverage duration and wait for completion of discontinuous coverage to resume normal services when DisCoNoserviceapplicability parameter is set to value corresponding to true to indicate that UE shall remain in no service. Alternately, the method includes performing PLMN selection procedure to camp on alternate network during discontinuous coverage to receive normal services when DisCoNoserviceapplicability parameter is set to the value correspond to false to indicate that UE selects and camps on alternate network.