Interactive Service Packet Splitting for Latency-Aware Transmission
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Solution Overview
Problem
In 5G systems, the transmission of high-bandwidth, interactive services like cloud gaming, VR, AR, and MR results in significant network resource waste due to the inability to restore the data packet if one segment fails to meet latency requirements, leading to inefficient use of network resources.
Innovation Solution
Implementing a method and apparatus that monitor transmission delay of data sub-packets and stop transmitting remaining sub-packets if latency requirements are not met, using policy information to manage PDU sessions and adjust transmission based on delay thresholds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If data packets of interactive services are split into multiple data sub-packets for transmission, then transmission bandwidth is improved and data restoration capability is enhanced, but network resource occupancy increases and transmission delay control becomes more difficult
Solution Approach 1:
The patent divides large data packets of interactive services into multiple smaller data sub-packets for transmission. This segmentation enables parallel transmission through multiple network paths, improving overall transmission bandwidth and capability while maintaining the ability to restore original data from received sub-packets.
Solution Approach 2:
The patent implements a selective transmission stop mechanism where, upon detecting that a data sub-packet fails to meet delay requirements, the system stops transmitting remaining sub-packets of the same data packet. This partial action prevents unnecessary network resource occupancy while ensuring that already-transmitted sub-packets can still be used for data restoration if sufficient quality is achieved.
2Reliability
If data sub-packets are transmitted to ensure complete data restoration, then data reliability is improved, but transmission delay increases and network resources are wasted
Solution Approach 1:
The patent implements a feedback mechanism where the transmitting end monitors transmission delay of each data sub-packet in real-time. When a sub-packet exceeds the delay threshold, the system immediately stops transmitting remaining sub-packets and notifies the receiving end. This feedback loop ensures data reliability by preventing incomplete restoration while minimizing transmission delay and network resource waste.
Solution Approach 2:
The patent pre-configures delay thresholds and transmission stop criteria before data transmission begins. This preliminary action allows the system to make rapid decisions during transmission without complex real-time calculations, ensuring that data restoration reliability is maintained while minimizing delay penalties.
3Reliability
If all data sub-packets are transmitted regardless of delay status, then complete data delivery is ensured, but network resource efficiency deteriorates
Solution Approach 1:
The patent employs a strategic approach where data sub-packets are transmitted only until the delay threshold is exceeded or sufficient sub-packets are received for restoration. This partial transmission action maintains data delivery reliability through the stop-notification-resume mechanism while dramatically improving network resource efficiency by eliminating unnecessary transmissions of late-arriving sub-packets.
Data Source
AI summary
A data transmission method includes receiving policy information transmitted by a core network device and related to a Protocol Data Unit (PDU) session, the policy information instructing transmission delay monitoring to be performed on data sub-packets obtained by splitting a data packet of an interactive service. The method further includes, in response to identifying that a data packet transmitted by a previous node is one of the data sub-packets obtained by splitting the data packet of the interactive service, detecting, according to the policy information in a process of transmitting the data sub-packets to a subsequent node, whether transmission of the data sub-packets meets a delay requirement. The method further includes, in response to detecting that the transmission of the data sub-packets does not meet the delay requirement, stopping transmitting remaining data sub-packets obtained by splitting the data packet of the interactive service to the subsequent node.