Service-Specific Access Control in Wireless Systems
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems lack an efficient method for service-specific access control (SSAC) that can restrict voice and non-voice calls separately, particularly in emergency situations where maintaining communication channels is crucial, and existing domain-specific access control mechanisms do not apply to evolved packet systems.
Innovation Solution
A method and apparatus for performing SSAC by acquiring and selecting different sets of barring information for voice, video, and other applications at the radio access control layer, which are then forwarded to the multimedia telephony service layer to control access, using system information block type 2 for acquiring barring information, allowing or denying access based on these settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If domain-specific access control (DSAC) mechanism is applied to restrict access during congestion, then service availability for specific domains is improved, but the mechanism does not apply to evolved packet systems and cannot control other applications besides voice and video
Solution Approach 1:
The patent segments access control into service-specific categories (voice, video, other applications) by introducing separate barring information sets for each service type. The network broadcasts different barring parameters (barringFactor, barringTime) for voice, video, and other applications independently, allowing granular control over each service category while maintaining a unified access control framework in EPS systems.
Solution Approach 2:
The patent creates a universal service-specific access control mechanism that extends DSAC functionality to evolved packet systems and covers all application types (voice, video, chat, file transfer, etc.). The SSAC mechanism serves multiple functions: it restricts voice calls, non-voice calls, and other data applications separately, while providing a scalable framework that can accommodate future service types without requiring system redesign.
2Productivity
If access control is applied to restrict non-voice services during emergencies, then resource utilization is improved, but the complexity of managing multiple barring information sets increases
Solution Approach 1:
The patent segments barring information into distinct sets for different service categories (voice, video, other applications), each with its own barringFactor and barringTime parameters. This segmentation allows the network to independently control access for each service type based on emergency conditions, optimizing resource utilization by prioritizing critical services while restricting non-essential ones, without requiring complex cross-service management logic.
Solution Approach 2:
The patent implements self-service mechanisms where user equipment automatically selects and applies the appropriate barring information set based on the service type being accessed. The UE independently evaluates barring conditions for voice, video, or other applications and makes access decisions without requiring network intervention for each individual access control decision, thereby reducing signaling overhead and management complexity.
Data Source
AI summary
A method and apparatus for performing service-specific access control in a wireless communication system is provided. A user equipment (UE) acquires different sets of barring information for a voice application, a video application and other application, and decides whether or not access is allowed according to the sets of barring information for the other application if an application except the voice application and the video application is offered.