Multiple TFT Elements in Single PDU Session Command
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Solution Overview
Problem
Current wireless communication systems, such as 5G NR, face inefficiencies in transmitting traffic flow template (TFT) information due to the need for multiple messages per TFT operation, which increases signaling overhead and can exceed maximum information element sizes.
Innovation Solution
Implementing a method to transmit multiple TFT information elements within a single message, using a mapped EPS bearer context, allowing for efficient communication of multiple TFT operations in a single command message, thereby reducing signaling overhead and accommodating information that exceeds maximum size limits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple TFT operations are transmitted using separate messages, then each TFT operation can be communicated accurately, but the signaling overhead increases and message transmission efficiency decreases
Solution Approach 1:
The patent combines multiple TFT information elements into a single message by introducing a list structure that can accommodate multiple TFT operations. This merging approach reduces the number of separate messages required, thereby decreasing signaling overhead while maintaining complete communication of all TFT operations.
Solution Approach 2:
The patent creates a universal message structure that can handle multiple TFT operations simultaneously. The modified command message serves multiple functions: it can carry single or multiple TFT operations, establish or modify PDU sessions, and maintain compatibility with existing single-TFT message formats through the list structure.
2Productivity
If multiple TFT information elements are included in a single message, then signaling overhead is reduced, but the message size may exceed maximum information element size limits
Solution Approach 1:
The patent segments the message structure into hierarchical levels: a main command message containing a list of TFT information elements. Each TFT information element is further segmented into standardized fields (packet filter, QoS parameters, etc.). This segmentation allows flexible composition of messages that can be managed within size constraints while maintaining multiple TFT operations.
3Productivity
If a single message conveys multiple TFT operations, then communication efficiency improves, but the complexity of message processing increases
Solution Approach 1:
The patent introduces dynamic elements to the message structure, including a configurable list size parameter and flexible TFT information element formats. The receiving device can dynamically process varying numbers of TFT operations within a single message, adapting to different communication scenarios while maintaining efficient processing through standardized element formats.
Data Source
AI summary
Described are examples for receiving, by a network node, a request message from a user equipment (UE) to establish or modify a protocol data unit (PDU) session for the UE, and transmitting, by the network node, to the UE, and based on the request, a command message to establish or modify the PDU session for the UE, wherein the command message includes multiple traffic flow template (TFT) information elements per bearer.