Selection and switching of satellies in a multi-orbit non-terrestrial ntn

The system facilitates efficient switching of PDU sessions across multiple aerospace platforms in a multi-orbit NTN by allowing UE and network entities to manage orbit transitions based on QoS and load, addressing frequent handovers and optimizing communication performance.

WO2026149784A1PCT designated stage Publication Date: 2026-07-16NOKIA TECHNOLOGIES OY
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
NOKIA TECHNOLOGIES OY
Filing Date
2025-12-18
Publication Date
2026-07-16

AI Technical Summary

Technical Problem

Existing telecommunications systems face challenges in efficiently managing and switching protocol data unit (PDU) sessions across multiple aerospace platforms in different orbits of a multi-orbit non-terrestrial network (NTN), particularly due to frequent handovers and varying quality of service (QoS) in low-earth orbit (LEO) satellites.

Method used

Implementing a system that allows user equipment (UE) and network entities to request, establish, and switch PDU sessions across multiple aerospace platforms in different orbits by sending capability indications and receiving policy rules, enabling seamless transitions based on QoS thresholds, satellite load, and network analytics.

Benefits of technology

Enables efficient and dynamic switching of PDU sessions across satellites in different orbits, optimizing QoS and load balancing, thereby enhancing communication resilience and coverage in multi-orbit NTNs.

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Abstract

A method performed by a user equipment (UE) is provided. The method includes sending to a network information that indicates a UE capability for a multi-orbit service of a multi-orbit non-terrestrial network (NTN). The method includes receiving, from the network, one or more policy rules for the multi-orbit service based on the UE capability. At least one of the one or more policy rules indicates a protocol data unit (PDU) session across multiple aerospace platforms of the multi-orbit NTN in different orbits. And the method includes initiating establishment or modification of the PDU session across the multiple aerospace platforms of the multi-orbit NTN in the different orbits based on the one or more policy rules.
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