Wireless Access Control via Service Group Barring
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face challenges in effectively managing access control for diverse services in LTE networks, particularly in minimizing signaling for barring parameters and ensuring access control even without dedicated network-provided information for user equipment.
Innovation Solution
A method and apparatus for access control in wireless communication systems that utilize service-specific and service-group access control information, including barring factor parameters, to determine access allowance based on survival rates calculated from uniformly distributed random values, with the option to apply either service-specific or service-group barring parameters depending on service grouping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If service-specific access control information is provided for each service type, then access control precision is improved, but signaling overhead increases
Solution Approach 1:
The patent segments access control information into two levels: service-group level (common parameters) and service-specific level (optional override parameters). This segmentation allows the system to maintain precise access control for critical services while using general parameters for common services, thereby reducing overall signaling overhead.
Solution Approach 2:
The service-group access control information serves multiple functions: it provides default access control parameters for all services in a group, reduces signaling overhead by avoiding redundant parameters for each service, and enables efficient access control decision-making through hierarchical parameter application.
2Reliability
If access control is implemented for all service types, then service management effectiveness is improved, but system complexity increases
Solution Approach 1:
The patent segments the access control logic into a hierarchical structure where service-group parameters provide the base level of control and service-specific parameters provide optional overrides. This segmentation simplifies the implementation by allowing terminals to first apply general rules before checking for service-specific exceptions, reducing the complexity of evaluating access control for each service type.
Solution Approach 2:
The patent applies local quality by allowing service-specific access control parameters to override service-group parameters only when necessary. This means that access control is customized for specific services only where needed, while maintaining simple default behavior for most services, thus improving service management effectiveness without uniformly increasing system complexity.
3Loss of information
If service-group access control information is used, then signaling is minimized, but access control flexibility may be reduced
Solution Approach 1:
The patent implements dynamics by allowing the access control parameters to be dynamically selected based on the service type. The terminal dynamically determines whether to use service-group parameters, service-specific parameters, or both, depending on the service characteristics. This dynamic approach maintains signaling efficiency while preserving the flexibility to adapt access control to specific service requirements when needed.
Data Source
AI summary
Provided is a method for a terminal controlling access in a wireless communication system. The method comprises: obtaining service-specific access control information; obtaining service group access control information; and controlling access to a specific type of service based on the service group access control information and the service-specific access control information. The service-specific access control information includes a service-specific barring factor parameter which is applied to the specific type of service. The service group access control information includes a service group barring factor parameter which is commonly applied to specific service groups that include at least one type of service.