TMGI Signaling With Network Identifier Mapping for NPN Consistency
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Solution Overview
Problem
In a radio access network sharing scenario, the use of a PLMN index in a TMGI leads to inconsistent determination of NPN identifiers between different nodes, causing incorrect usage of the TMGI.
Innovation Solution
A method involving the transmission of a first message containing a TMGI along with a network index and network identifier list, allowing the receiving node to determine consistent NPN identifier information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a PLMN index in an existing TMGI is directly multiplexed to determine NPN identifier information, then the TMGI structure is simplified and can be used in both PLMN and NPN scenarios, but different NPN identifiers are determined between interacting nodes leading to incorrect TMGI usage
Solution Approach 1:
The solution segments the NPN identifier determination process by introducing a separate network identifier list that is specifically associated with the TMGI. This list contains network identifiers (such as NID, CAG identifier, SNPN identifier, or PNI-NPN identifier) that are independently managed from the PLMN index, allowing nodes to correctly determine NPN identifiers without relying solely on the PLMN index multiplexing.
Solution Approach 2:
The patent introduces a network identifier list as an intermediary structure between the TMGI and the actual NPN identifier determination. This list acts as a mediator that maps the TMGI to the correct NPN identifier, ensuring consistency across interacting nodes while maintaining the simplified TMGI structure.
2Device complexity
If a PLMN value in an existing TMGI is directly multiplexed to determine NPN identifier information, then the identifier structure is reduced, but different NPN identifiers are determined between nodes causing incorrect TMGI usage
Solution Approach 1:
The identifier structure is segmented into the existing TMGI component and an associated network identifier list. This segmentation allows the TMGI to maintain its simplified structure while the network identifier list provides the additional NPN-specific identification information needed for consistent determination across nodes.
Solution Approach 2:
The network identifier list is nested with the TMGI, forming a hierarchical structure where the TMGI serves as the outer identifier and the network identifier list provides the inner, more specific NPN identifier information. This nesting allows the system to maintain the simplicity of the existing TMGI while incorporating the necessary NPN identification details.
3Reliability
If network identifier list is sent to enable consistent NPN identifier determination, then NPN identifier consistency is improved, but the message size and transmission overhead increase
Solution Approach 1:
The network identifier list is prepared and associated with the TMGI in advance, before the actual communication occurs. This preliminary action allows the list to be cached or pre-configured at the receiving node, reducing the need for repeated transmissions and minimizing the actual data overhead during communication.
Solution Approach 2:
Instead of transmitting the entire network identifier list repeatedly, the patent uses the TMGI as a reference key that points to the pre-configured network identifier list. The receiving node can then retrieve the appropriate NPN identifier information from its local copy of the list, significantly reducing transmission overhead while maintaining consistency.
Data Source
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AI summary
Provided in the present disclosure are an information transmission method and apparatus, and a storage medium. The method comprises: sending to a second node a first message which comprises a temporary mobile group identity (TMGI), wherein the first message is used by the second node to determine non-public network (NPN) identifier information associated with the TMGI. The present disclosure can ensure that pieces of NPN identifier information determined by two nodes are the same, thereby improving the reliability of the use of a TMGI.