Satellite User Equipment Registration With Dynamic Tracking Areas
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Solution Overview
Problem
The definition and management of tracking areas in conventional terrestrial cellular networks are inefficient for non-terrestrial cellular networks, particularly those via satellite, due to large cell sizes and satellite movement, leading to suboptimal signaling and tracking inefficiencies.
Innovation Solution
A method for registering and updating a UE-specific dynamic tracking area based on real-time user equipment position and speed, allowing for precise tracking and efficient signaling in satellite networks by establishing a customized tracking area centered on the user's location and adjusting its size based on mobility patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If tracking areas are defined based on fixed cell coverage areas in terrestrial networks, then the network can efficiently manage conventional cellular services, but this approach becomes inefficient in satellite networks due to large cell sizes and satellite movement
Solution Approach 1:
The patent applies the dynamics principle by transitioning from static tracking area definitions to dynamic UE-specific tracking areas that adapt to user equipment movement and satellite orbit characteristics. The network dynamically adjusts tracking area assignments based on real-time UE position, speed, and predicted trajectory, allowing the system to maintain efficiency while adapting to the dynamic nature of satellite networks.
Solution Approach 2:
The patent implements local quality by creating UE-specific tracking areas tailored to individual user requirements rather than using uniform tracking area definitions. Each UE receives a customized tracking area configuration based on its specific mobility pattern, service requirements, and current position, allowing optimized network management for each user's specific needs in the dynamic satellite environment.
2Loss of energy
If tracking areas are made larger to reduce tracking area update frequency, then signaling overhead for tracking area updates is reduced, but the search/paging coverage is compromised and more cells must be searched
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting tracking area parameters (size, shape, boundaries) based on real-time UE position, speed, and network conditions. The network modifies tracking area configuration parameters to optimize the balance between reducing update frequency and maintaining effective search coverage, rather than using fixed tracking area sizes.
Solution Approach 2:
The patent uses dynamics to make tracking area boundaries and configurations adaptable rather than fixed. The tracking areas dynamically adjust their extent and positioning based on UE movement patterns, allowing the system to maintain appropriate search coverage while minimizing unnecessary updates, thereby balancing signaling overhead and search reliability.
3Reliability
If tracking areas are made smaller to improve search coverage, then paging reliability is improved, but tracking area update frequency increases and signaling overhead increases
Solution Approach 1:
The patent implements parameter changes by continuously optimizing tracking area size and configuration parameters based on real-time UE characteristics. The network adjusts these parameters to achieve the minimum necessary tracking area size for reliable search while minimizing update frequency, rather than using uniformly small tracking areas throughout the network.
Solution Approach 2:
The patent applies partial action by creating UE-specific tracking areas that provide just enough coverage for the user's mobility pattern rather than using maximum coverage. This allows the system to maintain adequate search reliability for each user's specific needs while avoiding excessive tracking area updates and signaling overhead that would result from overly conservative small tracking areas.
4Ease of manufacture
If conventional tracking area management is used in satellite networks, then existing terrestrial network protocols can be utilized, but the large cell sizes and satellite movement cause tracking inefficiencies
Solution Approach 1:
The patent applies dynamics to enhance conventional tracking area management by adding dynamic UE-specific configurations on top of existing terrestrial network protocols. This allows the system to maintain protocol compatibility while implementing dynamic tracking area adjustments that address satellite network specificities, thereby improving tracking efficiency without completely redesigning the underlying protocol architecture.
Data Source
AI summary
The present invention is aimed at a method for registering a user equipment in a cellular communications network, and more specifically, in a satellite cellular communications network, which enables a user equipment to be registered in the network and a UE-specific dynamic tracking area to be established, customised for each user equipment depending on the position and mobility features of the user equipment. Additionally, the invention provides a method for updating the UE-specific dynamic tracking area of a moving user equipment when the user equipment moves outside the limits of a previously established UE-specific dynamic tracking area.