Network Access via GUTI for MulteFire Signaling Reduction
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Solution Overview
Problem
Frequent attach procedures by User Equipment (UE) in MulteFire networks lead to increased signaling loads and adverse network performance due to massive network signalings related to authentication and registration procedures.
Innovation Solution
A method and device for accessing a network by UE, which involves obtaining a second network identifier and service provider identifier when moving to a new cell, and sending an access request carrying a Globally Unique Temporary Identifier (GUTI) to access the new network, thereby avoiding unnecessary authentication and registration procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE initiates attach procedures based on IMSI when network identifier or service provider changes, then the UE can be authenticated and registered in the new network, but massive network signalings are generated increasing signaling loads and adversely affecting network performance
Solution Approach 1:
The network side performs preliminary actions by storing context information of the UE in a previous network before the UE moves to a new network. When the UE initiates an attach procedure in the new network, the network side can quickly retrieve and use the pre-stored context information, avoiding the need for complete re-authentication and re-registration procedures, thus reducing signaling loads while maintaining authentication reliability
Solution Approach 2:
The network side creates a copy of the UE's context information from the previous network and stores it in the new network. This copied context information includes authentication credentials, service subscriptions, and other relevant data. When the UE attaches to the new network, the network side uses this copied information to quickly complete authentication and registration without requiring the UE to re-transmit all its identity and service information, thereby reducing signaling overhead while ensuring reliable authentication
2Adaptability or versatility
If the UE frequently moves between cells and networks, then the UE can maintain connectivity and access services, but frequent attach procedures generate massive signalings related to authentication and registration
Solution Approach 1:
The network side performs preliminary actions by pre-storing the UE's context information in multiple networks or network nodes before the UE moves. This allows the UE to quickly attach to a new network without initiating complete authentication and registration procedures, as the network side already has the necessary information ready, thus reducing signaling load while maintaining high network access adaptability
Solution Approach 2:
The network side creates and distributes copies of the UE's context information to multiple network nodes or neighboring networks. When the UE moves to a new cell or network, the new network can immediately use the copied context information to facilitate quick attachment, avoiding frequent complete authentication cycles and reducing the quantity of signaling messages exchanged during mobility events
Data Source
AI summary
A method and a device for accessing a network by a User Equipment, and a User Equipment are provided. The method includes obtaining a second network identifier of a second network in which a second cell is and an identifier of a second service provider selected by the UE from service providers supported by the second network, when the UE moves from a first cell to the second cell; sending an access request carrying a Globally Unique Temporary Identifier of the UE to the second network to access the second network, when the second network identifier is different from a first network identifier of a first network in which the first cell is, or when the identifier of the second service provider is different from an identifier of a first service provider with which the UE registers, in service providers supported by the first network.