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Work item:
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Y.NSF
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Subject/title:
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Requirements and framework of network slicing federation in IMT-2020 networks and beyond
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Status:
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Under study [Issued from previous study period]
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Approval process:
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AAP
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Type of work item:
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Recommendation
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Version:
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New
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Equivalent number:
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-
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Timing:
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2026-Q4 (Medium priority)
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Liaison:
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ITU-T SG11, ITU-T SG2, 3GPP SA2, 3GPP SA5
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Supporting members:
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China Unicom, China Telecom, China Mobile, Sunchon National University (Korea Republic of)
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Summary:
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To meet the evolving service requirements in IMT-2020 network and beyond, network slicing has emerged as a key enabler for the support of different types of services as it can provide services over corresponding logically isolated network slices by slicing a shared physical network into multiple, end-to-end (E2E) networks [ITU-T Y.3101]. Specifically, the network slice is provisioned with dedicated resources and network functions(such as programmable MEC infrastructure) to meet service-specific performance requirements. When the dedicated network slice is across different administrative domains triggered by user mobility, resource availability, or network connectivity issues, the requested dedicated network slice is not readily available in the visited network.
To ensure service continuity, as the users move from home network area of one operator to the visiting network of another, the network slicing status should be monitoring in real-time, and the network slicing service configuration files, management policy and mechanisms, and network slicing template should be also transferred to the destination operator dynamically. However, the current related recommendations for network slicing roaming are all on the premise of there are existing and available network slices in visited networks for users, and not mentioning the scenario that the dedicated network slice is not available in the visited network. The functions, mechanisms, or procedures for network slicing mobility to create the dedicated network slice in visited network are not standardized.
Therefore, this draft new Recommendation proposes to initiate a new work item to specify the requirements, framework, and procedure for network slicing federation supporting real-time and seamless connection of the dedicated network slice mobility across different administrative domains in IMT-2020 networks and beyond.
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Comment:
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-
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Reference(s):
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Historic references:
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Contact(s):
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| ITU-T A.5 justification(s): |
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First registration in the WP:
2024-08-08 10:52:47
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Last update:
2025-04-02 13:22:04
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