Wireless Access Control Selective Call Blocking
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Solution Overview
Problem
Current wireless communication systems cannot selectively prevent certain mobile originating calls in congestion for UEs in RRC_CONNECTED state while allowing other MO calls, leading to network overload issues.
Innovation Solution
A method and apparatus for performing access control in wireless communication systems, where UEs in RRC_CONNECTED state receive access control parameters from the network to selectively delay or skip random access preamble and scheduling requests for specific mobile originating accesses, based on access class barring information or service-specific access control, allowing the network to manage congestion effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If access control parameters are applied to all mobile originating calls during congestion, then network overload is mitigated, but service flexibility and user experience deteriorate as all calls are uniformly blocked
Solution Approach 1:
The patent segments mobile originating calls into different categories based on service type (e.g., voice, data, emergency) and applies different access control parameters to each category. This allows the network to selectively block or allow specific services during congestion, maintaining flexibility while mitigating overload.
Solution Approach 2:
The patent applies different access control parameters to different services or call types locally rather than uniformly across all calls. This enables tailored congestion management where critical services (e.g., emergency calls) maintain access while non-critical services are blocked, preserving service flexibility during overload conditions.
2Adaptability or versatility
If access control parameters are not applied during congestion, then service flexibility is maintained, but network overload increases leading to system failure
Solution Approach 1:
The patent implements dynamic access control parameters that can be adjusted in real-time based on network conditions. During congestion, parameters are modified to block specific services while maintaining flexibility for other services. When conditions improve, parameters are relaxed, allowing the system to adapt to changing load conditions while maintaining both reliability and flexibility.
3Reliability
If selective access control is implemented for different applications, then service quality is improved, but device complexity increases
Solution Approach 1:
The patent enables User Equipment to autonomously determine which access control parameters to apply based on the service type or application making the access request. The UE self-identifies the service category (e.g., voice, data, emergency) and selects the appropriate parameters without requiring complex network signaling for each access attempt, reducing overall system complexity while maintaining selective control.
Data Source
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AI summary
A method and apparatus for performing access control in a wireless communication is provided. A user equipment (UE) receives an access control parameter and a backoff parameter from a network, and determines whether to apply the access control parameter or the backoff parameter based on applications. If it is determined to apply the access control parameter, the UE applies the access control parameter instead of the backoff parameter.