Public-NPN Network Access Control for Capability-Based Search
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Solution Overview
Problem
The challenge of implementing network access control in scenarios where both public and non-public networks coexist has not been adequately addressed, particularly in managing access and service requirements for terminal devices with varying connection capabilities.
Innovation Solution
A network access control method that enables terminal devices to manage connections to both public and non-public networks based on service requirements and connection capabilities, involving network access control policies, tracking area configurations, and identification information to optimize access and reduce power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal device continuously searches for both public network and NPN, then network access reliability is improved, but power consumption increases
Solution Approach 1:
The terminal device autonomously determines whether to search for NPN based on identification information received from the public network, without requiring continuous network control signaling. The device self-manages the search decision by comparing its current state and requirements against the received configuration, thereby reducing unnecessary searches and power consumption while maintaining reliable access when needed.
Solution Approach 2:
The network side device pre-configures identification information of NPN to the terminal device during idle or inactive states. This preliminary configuration enables the terminal device to make informed search decisions later without requiring real-time network intervention, reducing continuous searching and associated power consumption while ensuring reliable access when the device enters connected state.
2Adaptability or versatility
If the terminal device maintains connections to both public network and NPN simultaneously, then service capability is improved, but device complexity increases
Solution Approach 1:
The patent segments network management into distinct phases: idle/inactive state configuration and connected state operation. During idle/inactive states, the terminal receives and stores NPN identification information separately from public network configuration. When transitioning to connected state, the device applies appropriate access control policies based on its network connection capability, managing public and NPN connections independently according to service requirements rather than simultaneously maintaining both.
Solution Approach 2:
The terminal device dynamically adjusts its network connection strategy based on its connection capability and current service requirements. Devices with dual connection capability can simultaneously maintain public network and NPN connections when service demands require it, while devices with single connection capability dynamically switch between networks based on priority policies. This dynamic adaptation reduces complexity by avoiding unnecessary simultaneous connections while maintaining service capability when needed.
3Measurement precision
If access control policies are continuously updated and configured, then network control precision is improved, but signaling overhead increases
Solution Approach 1:
The network side device performs preliminary configuration of NPN identification information and access control policies during idle or inactive states when the terminal is not actively transmitting data. This advance configuration ensures precise access control is in place before the terminal needs to access NPN, eliminating the need for continuous policy updates and reducing signaling overhead during active communication phases.
Solution Approach 2:
The patent uses identification information as an intermediary mechanism between the network side device and terminal device. Instead of continuously exchanging detailed access control policies, the network configures condensed identification information that the terminal uses to autonomously determine access decisions. This intermediary approach maintains precise access control while significantly reducing signaling overhead compared to continuous policy configuration.
Data Source
AI summary
Embodiments of this disclosure include a network access control method and device. The method may include obtaining a network connection capability of the terminal device. The network connection capability may include a capability of connecting to a public network and a non-public network (NPN) that are mutually independent. The method may further include performing access control on the terminal device according to a network service requirement and the network connection capability of the terminal device in response to the terminal device being in a connected state.