Public Safety Network Access in Wireless Communication Systems
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Solution Overview
Problem
Current wireless communication systems, particularly LTE, face challenges in distinguishing and efficiently supporting public safety network terminals, leading to difficulties in providing differentiated services and optimizing resource allocation for public safety services.
Innovation Solution
A method and device that involve a terminal and base station communication process where the terminal transmits public safety network-related information to the base station, which determines if a handover to a specific frequency band supporting public safety services is necessary, and if so, sends a handover command to the terminal to switch to that frequency band.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the mobile communication system uses a unified network structure for all terminals, then the network structure remains simple and easy to manage, but public safety network terminals cannot be distinguished from normal terminals, leading to inability to provide differentiated services
Solution Approach 1:
The network structure is segmented into public safety network terminals and normal terminals based on their different service requirements. Public safety terminals are identified through specific message types (e.g., RRC Connection Request with public safety indication, or UE Capability Information messages) and routed to appropriate frequency bands or base stations, while normal terminals continue using the existing network path. This segmentation enables differentiated service provision without completely redesigning the overall network architecture.
2Productivity
If the scheduler allocates resources based on general channel status and data amount, then resource allocation is efficient for normal services, but public safety services cannot receive prioritized or differentiated resource allocation
Solution Approach 1:
The scheduler implements local quality differentiation by introducing service-type-specific allocation rules. When a public safety terminal is identified (through message analysis or capability information), the scheduler applies specialized resource allocation policies such as prioritized resource assignment, guaranteed bandwidth allocation, or enhanced quality of service parameters for that specific terminal, while maintaining general allocation rules for normal terminals. This allows efficient public safety service support without completely overhauling the scheduler architecture.
Data Source
AI summary
The present invention relates to a method and a device for supporting a public safety network access in a wireless communication system. The method for supporting a public safety network access in a wireless communication system of the present invention comprises the steps of: transmitting a message comprising public safety net related information to a base station; determining whether a handover command is received from the base station in response to the message; and performing a handover at a frequency band which supports public safety network services.