Managing user equipment access to non-terrestrial networks

By specifying NTN cell-specific reasons in the 5G wireless network to reject UE access requests and manage their capabilities, the problem of resource waste by UEs during NTN cell congestion is solved, achieving more efficient network management and power saving.

CN121039975APending Publication Date: 2025-11-28GOOGLE LLC
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Patent Information

Application Number
CN202480028747.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2023-04-10
Filing Date
2024-03-19
Publication Date
2025-11-28

AI Technical Summary

Technical Problem

The existing 5G wireless network fails to effectively distinguish and manage user equipment (UE) access to terrestrial network (TN) cells and non-terrestrial network (NTN) cells. This results in UEs being unable to explicitly refuse access to terrestrial cells when NTN cells are congested, leading to resource waste and power consumption.

Method used

By specifying a cell-specific reason in the Radio Access Network (RAN), the UE's access request is denied, and NTN capabilities are disabled or NTN search is suspended in the UE. The UE's subscription information is retrieved using the Network Entity (NE) to determine whether access to the NTN cell is allowed.

Benefits of technology

It enables effective management of NTN cells, saves UE power and communication resources, avoids unnecessary access attempts, and improves network efficiency and reliability.

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Abstract

Methods and apparatus (102, 110) implement techniques for managing access (602) to non-terrestrial network, NTN, cells distinct from access to all cells of a radio access network, RAN. The RAN specifies (606) a NTN cell-specific cause when denying a request of a user equipment, UE, for access to the NTN cell. The NTN cell specific cause only refers to an NTN cell, rather than all cells (i.e., rather than also a TN cell). The NTN cell-specific cause may be, for example, lack of sufficient NTN subscriptions or temporary unavailability of the NTN cell. In response to receiving the NTN cell-specific cause, the UE may suspend (608) its attempt to access the NTN cell.
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