MPQUIC Datagram Handling for Unknown Context IDs in PDU Sessions
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Solution Overview
Problem
Wireless communication systems often drop or fail to utilize datagrams with unknown context IDs during PDU sessions, leading to inefficient performance and low quality of service.
Innovation Solution
Implement a mechanism that implicitly registers datagrams to UDP flows regardless of their context IDs, allowing network entities to handle and buffer such datagrams, enhancing efficiency and quality of service by using MPQUIC steering functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If datagrams with unknown context IDs are dropped or not utilized, then network resource waste is reduced, but quality of service and network performance deteriorate
Solution Approach 1:
The patent introduces an intermediary mechanism (implicit registration process) between datagram reception and UDP flow handling. Network entities buffer datagrams with unknown context IDs temporarily and perform implicit registration to determine their belonging UDP flows, rather than immediately dropping them. This mediator approach preserves service quality while managing network resources efficiently.
Solution Approach 2:
The patent implements preliminary buffering and implicit registration before final datagram handling. Network entities prepare by temporarily storing datagrams with unknown context IDs and performing registration operations in advance to identify their corresponding UDP flows, ensuring no service degradation while avoiding resource waste from premature disposal.
2Reliability
If datagrams with unknown context IDs are buffered and processed, then quality of service improves, but network entity complexity increases
Solution Approach 1:
The patent implements self-service through automatic implicit registration mechanisms. Network entities autonomously perform the registration process without external intervention, automatically determining UDP flow belonging for datagrams with unknown context IDs. This self-service approach improves service quality while minimizing the need for complex external management systems.
Solution Approach 2:
The patent uses copying by creating temporary buffer copies of datagrams with unknown context IDs during the implicit registration process. This allows the original datagrams to be preserved and processed correctly once their UDP flow affiliation is determined, improving reliability without requiring fundamentally complex structural changes to network entities.
3Productivity
If implicit registration mechanism is implemented, then utilization of datagrams with unknown context IDs improves, but processing time increases
Solution Approach 1:
The patent implements skipping by allowing datagrams to proceed through the implicit registration process without blocking subsequent operations. The mechanism rushes through the registration by performing it in the background or concurrently, improving overall datagram utilization efficiency while minimizing additional processing time impact on the main data flow.
Data Source
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AI summary
Various aspects of the present disclosure provide mechanisms for handling datagrams, such as datagrams having unknown context IDs, by UEs and/or network entities of a 3GPP network that employ a multi-path QUIC (MPQUIC) functionality during packet data unit (PDU) sessions. For example, the 3GPP network, via a policy control function (PCF) of the network, may predetermine a transport mode for datagrams transmitted within a PDU session and communicate the transport mode to the UE and network entity that established the PDU session.