Emergency Call Test Identifier Routing
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Solution Overview
Problem
Current methods for testing emergency call systems in mobile communication networks face challenges in ensuring reliable and cost-effective end-to-end testing, particularly in environments where electromagnetic interference is present, leading to risks of false routing and interference with operational calls.
Innovation Solution
A method that utilizes a packet switched network with IP Multimedia Subsystem (IMS) and Session Initiation Protocol (SIP) to differentiate test calls from operational calls by using unique test originator and destination identification identifiers, allowing for end-to-end testing of emergency call systems with minimized risk of false routing and operational interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a radio test-bed distinct from the surrounding operating radio networks is used for testing, then testing reliability is improved, but device complexity and cost increase
Solution Approach 1:
The patent introduces test-specific identification identifiers as an intermediary mechanism that enables differentiation between test calls and operational calls within the existing network infrastructure. This mediator allows the network to route test calls appropriately without requiring a separate physical test-bed, thus maintaining reliability while reducing complexity and cost.
Solution Approach 2:
The patent makes the existing mobile communication network universal by enabling it to handle both operational calls and test calls simultaneously through the same infrastructure. By introducing test-specific identifiers, the network gains multi-functionality, allowing it to serve both production and testing purposes without requiring separate dedicated test networks.
2Measurement precision
If electromagnetic shielding is implemented to prevent false routing, then routing accuracy is improved, but cost and implementation complexity increase
Solution Approach 1:
Instead of using physical electromagnetic shielding, the patent introduces test-specific identification identifiers as a logical intermediary. This identifier acts as a mediator that enables the network to accurately distinguish and route test calls without requiring complex physical shielding infrastructure, thereby achieving routing accuracy through information-based differentiation rather than physical barriers.
Solution Approach 2:
The patent replaces the mechanical/physical approach of electromagnetic shielding with an information-based system using test-specific identification identifiers. This substitution eliminates the need for complex physical shielding while achieving the same goal of preventing false routing, thereby reducing implementation complexity and cost.
3Ease of manufacture
If test calls are conducted in the surrounding operating network, then cost is reduced, but the risk of false routing and interference with operational calls increases
Solution Approach 1:
The patent introduces test-specific identification identifiers as intermediaries that enable safe coexistence of test and operational calls within the same network. These identifiers act as mediators that allow the network to distinguish test traffic from operational traffic, ensuring that cost-effective testing in the operating network does not compromise routing reliability or interfere with normal service.
Solution Approach 2:
The patent applies local quality by assigning specific properties (test-specific identification identifiers) to test calls that differentiate them from operational calls. This allows the network to apply different routing rules and handling procedures locally to test traffic versus operational traffic, enabling cost-effective testing while maintaining routing reliability for both types of calls.
4Measurement precision
If unique test identification identifiers are used to differentiate test calls, then routing accuracy is improved, but information processing complexity increases
Solution Approach 1:
The patent changes the parameter space by introducing test-specific identification identifiers as additional distinguishing parameters for calls. This parameter change enables the network to accurately differentiate test calls from operational calls through simple identifier comparison, achieving high routing accuracy without requiring complex information processing, as the identifiers can be checked using straightforward lookup operations in databases.
Data Source
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Figure 3
AI summary
The invention relates to a method for performing a test of an emergency call or quality management system or an emergency call or quality management functionality, wherein the emergency call or quality management system or the emergency call or quality management functionality is used with a mobile communication network, at least one mobile communication device or user equipment being connected to the mobile communication network, wherein the mobile communication network comprises an access network, a core network, and a plurality of base station entities, and the mobile communication network comprising or being associated with a plurality of public safety answering points or a plurality of public safety answering point functionalities or especially one or a plurality of quality management test call endpoint(s), wherein at least one test mobile communication device is simultaneously connected to the mobile communication network, the at least one test mobile communication device, being used - with at least a part of the mobile communication network - for performing the test of the emergency call or quality management system or the emergency call or quality management functionality, wherein the mobile communication network is a packet switched network and the emergency call or quality management system or the emergency call or quality management functionality is configured to handle IP multimedia subsystem based packet switched emergency calls and/or session initiation protocol based packet switched emergency calls, wherein the method comprises the following steps: -- in a first step, at least one test originator identification identifier and/or test destination identification identifier is defined for being used to perform the test of the emergency call or quality management system or the emergency call or quality management functionality using the at least one test mobile communication device, -- in a second step, subsequent to the first step, a test call is initiated or performed using the at least one test mobile communication device and the at least one test originator identification identifier and/or test destination identification identifier - the at least one test originator identification identifier and/or test destination identification identifier having been assigned to or having been associated to the at least one test mobile communication device-, -- in a third step, subsequent to the second step, the use of the at least one test originator identification identifier and/or test destination identification identifier-while initiating or performing the test call - is detected by the mobile communication network.