WTRU Service Provisioning for PALS Hosting Network
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Solution Overview
Problem
In mobile communication systems, particularly in 5G networks, there is a challenge in configuring network slices for localized services (PALS) where the hosting network lacks subscription information and means to verify requested network slices, leading to configuration failures and registration issues for Wireless Transmit/Receive Units (WTRUs).
Innovation Solution
The system involves a WTRU detecting configuration failures and sending update requests to associated network nodes, which receive updated network configurations and policy information, allowing for registration requests with slice identifiers, thereby resolving configuration and registration failures by determining and updating control policies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the hosting network allows WTRUs to request network slices without subscription verification, then access to localized services is enabled, but configuration failures occur due to lack of subscription information
Solution Approach 1:
The home network acts as an intermediary between the WTRU and the hosting network. When the hosting network cannot verify subscription information, it redirects the WTRU to its home network, which then provides the necessary configuration information and policies, enabling successful network slice configuration without direct verification at the hosting network.
Solution Approach 2:
The WTRU's home network pre-configures the device with necessary network slice information and policies before the WTRU attempts to access the hosting network. This preliminary configuration includes subscription information and allowed network slices, which the WTRU can then use when registering with the hosting network, preventing configuration failures.
2Manufacturing precision
If the hosting network requires complete configuration information before service provisioning, then configuration accuracy is improved, but service provisioning time increases due to additional verification steps
Solution Approach 1:
The WTRU receives and stores configuration information from its home network in advance, including network slice identifiers and policy information. This preliminary configuration allows the WTRU to immediately register with the hosting network without requiring the hosting network to perform time-consuming verification of subscription information.
Solution Approach 2:
The configuration process is segmented into two parts: (1) The home network provides configuration information to the WTRU, and (2) The WTRU uses this information to register with the hosting network. This segmentation allows the time-consuming verification to occur in the background at the home network, while the actual service provisioning at the hosting network is fast.
3Measurement precision
If the WTRU sends frequent update requests for network configuration, then configuration freshness is improved, but network signaling overhead increases
Solution Approach 1:
The WTRU monitors its network configuration status and only sends update requests when configuration failures are detected or when currently configured network slices are no longer valid. This feedback-based approach ensures configuration freshness while minimizing unnecessary signaling overhead by avoiding frequent routine update requests.
Data Source
AI summary
Systems, methods, and instrumentalities are disclosed for service provisioning and providing access to a PALS hosting network. In examples, a WTRU may send a first message to a first network node if a configuration failure event is detected, wherein the first network node is associated with a first network, wherein the configuration failure event is associated with a second network, and wherein the first message indicates an update request for a network configuration for a local service. The WTRU may receive a second message from the first network node, wherein the second message indicates a response to the update request, indicates an updated network configuration, and indicates a slice identifier associated with the second network The WTRU may receive a third message from the first network node, wherein the third message indicates policy information associated with the local service. The WTRU may send a fourth message to a second network node, wherein the second network node is associated with the second network, wherein the fourth message is based on the policy information and the updated network configuration, and wherein the fourth message indicates a registration request associated with the slice identifier.