5G Voice Service Provisioning via UE Capability Segmentation
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Solution Overview
Problem
Existing systems for managing voice services in 5G networks face inefficiencies due to incomplete consideration of user equipment (UE) capabilities, leading to incorrect indications of voice over internet protocol multimedia subsystem (IMS) support and potential service failures.
Innovation Solution
The proposed solution involves a method where the user equipment (UE) generates a registration request message that includes 5G mobility management (5GMM) capabilities, specifically indicating support for various voice over technologies such as VoNR, VoLTE-5GC, inter-RAT fallback, and EPS fallback. This information is transmitted to a next-generation radio access network (NG-RAN) node, enabling a detailed comparison of UE and network capabilities to accurately determine voice service support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing systems manage voice services without complete UE capability consideration, then the provisioning process is simpler and faster, but the accuracy of voice service support indication deteriorates leading to service failures
Solution Approach 1:
The patent segments the UE capability indication into multiple distinct capability indicators (VoNR capability indicator, VoLTE-5GC capability indicator, inter-RAT fallback capability indicator, EPS fallback capability indicator). Each indicator represents a specific voice service capability, allowing the network to compare individual capabilities between UE and network separately, thereby improving accuracy without requiring a complete capability rewrite of the entire system.
Solution Approach 2:
The patent implements preliminary action by having the UE include capability indicators in the registration request message before the actual voice service provisioning occurs. This allows the network to perform capability comparison and determine voice service support in advance, during the registration process, rather than during voice service setup, thereby improving accuracy while maintaining efficient provisioning flow.
2Reliability
If the UE includes detailed 5GMM capability information in registration requests, then the voice service provisioning accuracy improves, but the signaling message size and processing complexity increase
Solution Approach 1:
The patent segments the capability information into specific, named indicators (VoNR capability indicator, VoLTE-5GC capability indicator, inter-RAT fallback capability indicator, EPS fallback capability indicator) rather than using a monolithic capability structure. This segmentation allows the network to process only the relevant capability information needed for voice service determination, improving reliability while controlling processing complexity through targeted data extraction.
Solution Approach 2:
The patent makes the registration request message multi-functional by having it carry both standard registration information and the additional 5GMM capability indicators. This allows a single message to serve both registration and capability exchange purposes, improving reliability of voice service provisioning while avoiding the need for separate capability negotiation messages that would increase overall system complexity.
Data Source
AI summary
Techniques are provided for managing the provisioning of voice services to a user equipment (UE) in a fifth generation (5G) network by a base station (BS). For example, the BS receives an initial registration request message that includes 5G mobility management (5GMM) capabilities of the UE that are indicative of whether the UE supports voice over internet protocol multimedia subsystem (IMS), and compares the 5GMM capabilities of the UE and the capabilities of the BS. Based on the comparison, the BS can transmit a registration accept message including an indication of whether voice over IMS is approved.