Network Slice Notification for Inter-PLMN Service Continuity
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Solution Overview
Problem
The existing methods for implementing Service Enabler Architecture Layer (SEAL) network slice capability enablement (SNSCE) during inter-PLMN mobility lack a specified mechanism for the SNSCE server to notify the SNSCE client of network slice information, leading to gaps in vertical application layer (VAL) service continuity.
Innovation Solution
A custom HTTP POST request method is employed by the SNSCE server to notify the SNSCE client of network slice information, ensuring VAL service continuity during inter-PLMN mobility without the need for subscription, using a custom operation with a defined path and data structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing methods for implementing SNSCE during inter-PLMN mobility are used, then network slice capability enablement is achieved, but there is no specified mechanism for SNSCE server to notify SNSCE client of network slice information, leading to gaps in VAL service continuity
Solution Approach 1:
The patent applies preliminary action by having the SNSCE server proactively notify the SNSCE client about the target network slice configuration before the actual mobility event occurs. The server prepares and transmits the network slice information in advance, ensuring that the client is ready for the upcoming network transition and maintaining continuous VAL service without interruption.
Solution Approach 2:
The patent implements feedback mechanisms where the SNSCE server monitors mobility events and provides timely information about network slice changes to the SNSCE client. This feedback loop ensures that the client is aware of the target network slice configuration and can seamlessly transition, thereby maintaining service continuity and preventing information loss during inter-PLMN mobility.
2Reliability
If a custom HTTP POST request method is used to notify network slice information, then VAL service continuity is ensured during inter-PLMN mobility, but the notification mechanism complexity increases
Solution Approach 1:
The patent applies universality by utilizing the existing HTTP POST request method, which is a standard and widely-supported communication protocol. Instead of creating a completely new notification mechanism, the solution leverages the universal HTTP protocol to achieve network slice information transmission, thereby ensuring service continuity while minimizing the increase in system complexity.
Solution Approach 2:
The patent uses the HTTP POST request as an intermediary mechanism between the SNSCE server and the SNSCE client. This standard protocol acts as a mediator that facilitates reliable information transmission during mobility events, providing a balanced approach that ensures service continuity without requiring complex custom notification infrastructure.
3Reliability
If network slice configuration is provided timely during mobility, then service quality is maintained, but the complexity of mobility management increases
Solution Approach 1:
The patent applies self-service by enabling the SNSCE server to automatically monitor mobility events and initiate the network slice configuration notification process without requiring manual intervention. The system autonomously detects when a device is moving between PLMNs and proactively provides the necessary configuration information, maintaining service quality while reducing the operational complexity of mobility management.
Solution Approach 2:
The patent implements preliminary action by preparing and transmitting the network slice configuration information before the mobility event is completed. The SNSCE server proactively notifies the client about the target network slice in advance, ensuring that the configuration is ready and service quality is maintained without adding significant complexity to the mobility management process.
Data Source
AI summary
Various aspects of the present disclosure relate to wireless communication continuity of vertical application layer (VAL) service to a device during inter-network mobility. A first network entity includes processor(s) coupled with at least one memory. In response to a mobility of a device indicating impending transfer from a source to a target network entity, the processor(s) are configured to cause the first network entity to identify a first network slice associated with the source network entity. The first network slice supports a VAL service for the device. The processor(s) determines a second network slice associated with the target network entity and capable of supporting the VAL service for the device. The processor(s) configures the first network entity to communicate, to the device, according to a hypertext markup transfer protocol using a custom notify method, a slice configuration associated with the second network slice to maintain continuity of the VAL service.