Telecom Access Point Tracking Area Segmentation
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Solution Overview
Problem
The integration of access points (APs) in telecommunications networks leads to increased signalling resource waste due to unauthorized access attempts and high paging loads, particularly in areas with high traffic or dense AP penetration, as existing methods fail to efficiently manage access and paging in these environments.
Innovation Solution
Implementing a method to control access to APs by defining tracking areas that exclude AP cells, using an Access Indicator Field to authorize mobile terminals, and optimizing paging by associating APs with tracking areas to reduce unnecessary signalling and paging loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If access points are integrated into the telecommunications network to increase capacity, then network capacity is improved, but signalling resource waste increases due to unauthorized access attempts and high paging loads
Solution Approach 1:
The network is segmented into tracking areas that exclude AP cells, creating distinct management zones. This segmentation allows separate handling of macro network cells and AP cells, enabling targeted access control and paging optimization without affecting the entire network.
Solution Approach 2:
An Access Indicator Field is introduced as an intermediary mechanism between the network and mobile terminals. This field acts as a mediator that provides authorization information to terminals, enabling them to determine access rights without requiring complex network authentication for each access attempt.
2Reliability
If tracking areas include AP cells, then paging coverage is improved, but paging load increases due to unnecessary paging in high traffic areas
Solution Approach 1:
Tracking areas are segmented to exclude AP cells from macro network coverage areas. This creates separate tracking area identities for macro cells and AP cells, allowing the network to page terminals in macro cells without unnecessarily paging in AP cells, thereby reducing paging load while maintaining coverage.
Solution Approach 2:
Different tracking area configurations are applied to different locations - macro network cells have one tracking area structure while AP cells have a separate structure. This local differentiation allows optimized paging strategies for each type of cell based on their specific traffic patterns and coverage characteristics.
3Reliability
If access control restrictions are applied to APs, then unauthorized access is reduced, but device complexity increases due to access determination requirements
Solution Approach 1:
The Access Indicator Field serves as a simplified intermediary that provides authorization information directly to mobile terminals. Instead of complex authentication protocols, the field contains encoded access rights information that terminals can interpret locally, significantly reducing the complexity of access control while maintaining security.
Solution Approach 2:
Mobile terminals use the Access Indicator Field to self-determine their access rights to APs without requiring network intervention for each access decision. The terminal autonomously evaluates the field information and determines whether to attempt access, reducing network load and simplifying the overall access control system.
Data Source
AI summary
A GSM, UMTS or LTE mobile telecommunications network includes a radio access network comprising base stations, and further includes one or more additional access points. An access point may be connected to the network core by an IP transport broadband connection. The access point is configured to appear to the mobile terminal as a base station. Arrangements are disclosed which allow the network to restrict access to the network via these access points whilst also minimizing signaling requirements. The access points may be excluded from traditional Tracking Areas, but associated therewith by a network controller in a mapping in order to notify authorized mobile terminals of the Access Point's existence.