PDU Set Information Transmission in 5G Wireless Systems
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Solution Overview
Problem
Current 5G systems lack an efficient method for transmitting Pack Data Unit (PDU) set information and indicating the end of data bursts, which hinders effective QoS control and power consumption reduction in multimedia communication, especially for XR applications.
Innovation Solution
The proposed solution involves an apparatus and method for transmitting PDU set-related information between the Radio Access Network (RAN) and the User Plane Function (UPF) using a GTP-U extension header, including indicators for PDU type, QoS Flow Identifier, PDU Set Size, End Data Burst Indicator, and sequence numbers, to enable efficient processing and power management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional packet-by-packet transmission is used, then simple processing is maintained, but QoS control efficiency deteriorates for multimedia communication
Solution Approach 1:
The patent segments multimedia data into PDU sets with specific characteristics ( XR, audio, video, etc.) and transmits them as unified units rather than individual packets. This segmentation at the PDU set level enables efficient QoS control for different multimedia types while reducing processing complexity compared to packet-by-packet handling.
Solution Approach 2:
The patent merges multiple packets belonging to the same PDU set into a single transmission unit. By combining packets with similar characteristics into PDU sets, the system achieves better QoS control efficiency and reduces the overhead of processing individual packets, especially for bursty multimedia traffic.
2Use of energy by moving object
If continuous data transmission is maintained, then data delivery reliability is improved, but power consumption increases
Solution Approach 1:
The patent includes an End Data Burst indicator in the PDU set transmission, which provides advance information about when data transmission will end. This allows the receiving end to prepare for power saving mode in advance, enabling Connected Mode DRX operation that reduces power consumption while maintaining data delivery reliability through proper burst termination signaling.
Solution Approach 2:
The patent implements Connected Mode DRX with periodic wake-up cycles, where the UE can sleep during idle periods and wake up only when data is available. The End Data Burst indicator enables this periodic action by clearly marking the end of data bursts, allowing the system to transition between active and sleep states efficiently.
3Productivity
If PDU set information is not transmitted, then transmission simplicity is maintained, but processing efficiency deteriorates
Solution Approach 1:
The patent uses a standardized PDU set information structure that can be universally applied across different multimedia types and QoS requirements. By defining a common information format (including PDU type, QFI, PDU set size, sequence numbers, and end burst indicators), the system achieves efficient processing for various scenarios without requiring multiple specialized transmission protocols.
Data Source
AI summary
Proposed is an apparatus and method for providing Pack Data Unit (PDU) set information in a wireless communication system. In the wireless communication system, a method for operating a User Plane Function (UPF) includes a process of transmitting PDU Set-related information and information for indicating the PDU Set-related information to a Radio Access Network (RAN) through a GTP-U extension header. The information for indicating the PDU Set-related information includes a PDU type, a QOS Flow Identifier (QFI), a PDU Set Size Indicator (PSSI), an End Data Burst Indicator (EDBI), a PDU Set Sequence Number (PSSN), and a PDU Sequence Number within a PDU Set (PSN). The PDU Set-related information includes at least one of an End PDU of the PDU Set (EPDU), an End of Data Burst (EDB), a PDU Set Importance (PSI), and a PDU Set Size (PSSize).