IMS Service Identifier Segmentation for Emergency QoS
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Solution Overview
Problem
Wireless networks face challenges in differentiating between multimedia priority service (MPS) and government emergency telecommunication service (GETS) due to the use of the same identifier, leading to service outages and degraded network performance during national security or emergency situations.
Innovation Solution
The network node receives an indication of a service identifier and/or service type through a session initiation protocol (SIP) message, allowing it to perform quality of service (QoS) decisions based on the specific service, thereby differentiating between MPS and GETS.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the same identifier is used for both MPS and GETS services, then device complexity is reduced and ease of operation is improved, but service reliability deteriorates and network performance degrades during emergency situations
Solution Approach 1:
The patent segments the service identification process by introducing distinct service identifiers for MPS and GETS services. Instead of using a single generic identifier, the system divides identification into separate categories, allowing the network to differentiate between multimedia priority service and government emergency telecommunication service, thereby resolving the reliability issue while maintaining operational simplicity through standardized identification procedures
Solution Approach 2:
The patent introduces an intermediary mechanism in the form of service-specific identifiers that act as mediators between the service request and network handling. These identifiers enable the network to recognize and prioritize appropriate services without complicating the user interface or service initiation process, thus maintaining ease of operation while improving service reliability
2Reliability
If separate identifiers are introduced for MPS and GETS services, then service reliability is improved and network performance is enhanced, but device complexity increases
Solution Approach 1:
The patent applies universality by designing service identifiers that serve multiple functions: they uniquely identify the service type, trigger appropriate quality of service policies, and enable prioritization mechanisms. This multi-functionality reduces the need for separate complex identification systems for each service, thereby improving reliability without proportionally increasing device complexity
Solution Approach 2:
The patent changes the identification parameter from a single generic service identifier to service-specific identifiers with distinct values. This parameter change enables the network to differentiate between MPS and GETS services reliably, while the identifiers themselves remain simple data elements that do not significantly increase device complexity
Data Source
AI summary
In some implementations, an Internet Protocol multimedia subsystem (IMS) entity may receive, from a home subscriber service (HSS) or a unified data management (UDM), an identifier associated with a government emergency telecommunications service (GETS) subscription, wherein the identifier includes a selection prefix. The IMS entity may identify that a call is associated with GETS based on the identifier. The IMS identifier may transmit, to a network node, an indication that the call is associated with GETS.