Dynamic PDU Session Data Transmission Scheme Adaptation
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Solution Overview
Problem
Existing CIoT systems face limitations in adapting data transmission schemes of PDU sessions to varying service scenarios, leading to inefficiencies and resource wastage due to fixed data transmission schemes.
Innovation Solution
A method and apparatus for dynamically changing the data transmission scheme of a PDU session by transmitting indication information between core network devices and terminal devices, allowing for adaptive scheme changes based on service requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed data transmission scheme is used in PDU sessions, then the system structure is simple and stable, but the system cannot adapt to varying service scenarios leading to resource wastage
Solution Approach 1:
The patent implements dynamic data transmission scheme by allowing the PDU session to switch between different transmission modes (e.g., packet switch and circuit switch) based on service requirements. The network device receives indication information and dynamically adjusts the transmission scheme without requiring PDU session re-establishment, making the system adaptable to varying service scenarios while maintaining session continuity.
Solution Approach 2:
The patent changes the transmission mode parameter of the existing PDU session based on received indication information. By modifying the transmission scheme parameter (e.g., switching between packet switch and circuit switch modes) without changing other session parameters, the system achieves adaptability to different service scenarios while keeping the overall system structure relatively simple.
2Adaptability or versatility
If the data transmission scheme is changed by re-establishing the PDU session, then the new scheme can be applied, but this causes service interruption and increases signaling overhead
Solution Approach 1:
The network device performs preliminary preparation by having the capability to support multiple data transmission schemes and to receive indication information that triggers scheme changes. This preliminary setup allows the system to switch transmission schemes dynamically without service interruption, as the necessary resources and configurations are pre-established.
Solution Approach 2:
The patent introduces indication information as an intermediary mechanism that carries the transmission scheme change request from the terminal or network to the relevant network device. This intermediary allows the transmission scheme to be changed without directly re-establishing the PDU session, thereby avoiding service interruption and reducing signaling overhead.
3Reliability
If multiple PDU sessions are established to support different transmission schemes, then service continuity is maintained, but network resources are wasted
Solution Approach 1:
The patent makes the single PDU session universal by enabling it to support multiple data transmission schemes (e.g., both packet switch and circuit switch modes). The network device receives indication information and adjusts the transmission scheme of the existing PDU session accordingly, allowing one session to serve multiple service scenarios without establishing additional sessions, thus conserving network resources while maintaining service continuity.
Solution Approach 2:
The patent merges the functionality of multiple potential PDU sessions into a single PDU session by enabling dynamic scheme switching. Instead of maintaining separate sessions for different transmission schemes, the system combines them into one session that can adapt its transmission mode based on service requirements, reducing resource consumption while ensuring service continuity.
Data Source
AI summary
The present disclosure relates to communication technology, and discloses a method and an apparatus for changing data transmission scheme, a device, and a storage medium. The method includes: the first core network device determining to change a data transmission scheme of a first Protocol Data Unit (PDU) session when the first PDU session meets a first condition; the first core network device transmitting first indication information to a second core network device in response to determining to change the data transmission scheme of the first PDU session; the second core network device initiating a session modification process corresponding to the first PDU session in accordance with the first indication information or initiating a session release process corresponding to the first PDU session in accordance with the first indication information.