Multimodal PDU Session Establishment via Service Identifier
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Solution Overview
Problem
Current cellular mobile communication networks lack support for establishing Protocol Data Unit (PDU) sessions for multimodal communication or services, which are essential for next-generation mobile communication scenarios like 6G that require intelligent and comprehensive processing of multiple input modalities.
Innovation Solution
A method and apparatus for information transmission in a core network that enables the establishment of PDU sessions for multimodal services by using multimodal service identifier information to configure and manage access and mobility management functions, session management functions, and user equipment, allowing data from different modalities (e.g., voice, video, sensors) to be transmitted through multiple connections, and processed accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional unimodal interaction methods are used, then system simplicity is maintained, but the system cannot support next-generation multimodal service requirements
Solution Approach 1:
The patent segments the session management process into distinct phases: PDU session establishment, PDU session modification, and PDU session release. Each phase handles specific aspects of multimodal service management independently, reducing overall system complexity while enabling comprehensive multimodal support.
Solution Approach 2:
The patent performs preliminary actions by establishing PDU sessions with predefined characteristics before actual multimodal service operations begin. The network pre-configures session parameters, QoS profiles, and resource allocations based on service type identifiers, so that when multimodal services activate, the foundational session structure is already in place, reducing real-time management complexity.
2Measurement precision
If PDU sessions are established for each modality separately, then service precision is improved, but information transmission efficiency deteriorates
Solution Approach 1:
The patent merges multiple modality-specific session requirements into a single unified PDU session by combining service type identifiers from different modalities (voice, video, data) into one session establishment request. This allows the network to allocate resources for multiple service types simultaneously through a single signaling exchange, reducing the number of separate session establishment procedures while maintaining precise service identification through the composite identifier.
Solution Approach 2:
The patent creates a universal PDU session structure that can accommodate multiple service types and modalities through a single session context. The session is configured with multi-functional capabilities using service type identifiers that encode information about voice, video, and data services, allowing one session to serve multiple purposes rather than requiring separate dedicated sessions for each modality.
3Reliability
If resource allocation is optimized for specific service types, then service quality is improved, but system adaptability to new service types deteriorates
Solution Approach 1:
The patent uses parameter changes by modifying existing PDU session parameters dynamically based on service type identifiers. Rather than creating entirely new session structures for different service types, the system adjusts QoS parameters, resource allocation values, and session characteristics within the existing framework. This allows optimized resource allocation for known service types while maintaining the flexibility to accommodate new service types through parameter reconfiguration rather than structural changes.
Data Source
AI summary
A method for information transmission includes receiving, by an access and mobility management function (AMF) of a core network, a protocol data unit (PDU) session establishment request sent by a user equipment (UE) for a multimodal service. The PDU session establishment request carries multimodal service identifier information.