RAN Notification Area Configuration Within UE Registration Areas
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Solution Overview
Problem
Current 3GPP standards do not guarantee that the RAN-based notification area for user equipment in an inactive state is a subset of the core network registration area, leading to potential inefficiencies and resource wastage.
Innovation Solution
A method and apparatus that ensure the RAN-based notification area is defined based on tracking areas and core network registration areas, using information exchange between base stations and the core network to configure a RAN-based notification area that is a subset of the core network registration area for the user equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the RAN-based notification area is configured independently without ensuring it is a subset of the core network registration area, then the configuration flexibility and ease of operation are improved, but the system efficiency deteriorates due to unnecessary location updates and resource wastage
Solution Approach 1:
The base station receives information from the core network about the registration area and uses this feedback to correctly configure the RAN-based notification area as a subset, preventing unnecessary location updates and improving system efficiency
Solution Approach 2:
The base station acts as an intermediary that receives registration area information from the core network and uses it to define the RAN-based notification area, ensuring proper hierarchical relationship between the two areas
2Device complexity
If the RAN-based notification area is not constrained to be a subset of the core network registration area, then the device complexity is reduced, but the loss of information increases due to unnecessary location updates
Solution Approach 1:
The base station uses feedback information from the core network about the registration area to properly configure the RAN-based notification area, preventing unnecessary location updates and information loss while maintaining manageable complexity
3Productivity
If the RAN-based notification area is properly defined as a subset of the core network registration area using information exchange, then the system efficiency and resource utilization are improved, but the device complexity increases due to additional information exchange procedures
Solution Approach 1:
The base station performs multiple functions by receiving registration area information from the core network and using it both for configuring the RAN-based notification area and for ensuring proper hierarchical relationships, thereby improving efficiency without proportionally increasing complexity
Data Source
AI summary
A communication system is disclosed in which a base station receives, from at least one further base station, information identifying at least one respective tracking area associated with at least one cell of each further base station. The base station also receives, from a core network, information identifying a registration area for a user equipment (UE). The base station defines, based on the received information identifying at least one respective tracking area and the received information identifying a registration area, a radio access network (RAN) based notification area for the UE.