PDU Set Transmission Using Receiver Feedback for XR Delivery
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Solution Overview
Problem
Current technologies lack effective methods for transmitting packet data unit (PDU) sets in 5G systems, particularly for XR services, where PDUs in a PDU set must be correctly received to utilize the information, and there is no efficient way to handle partial PDU loss or timing requirements.
Innovation Solution
A method for PDU set transmission involving a communication node that obtains assistance information for the receiver node, allowing for appropriate processing such as configuring, scheduling, or discarding the PDU set based on the receiver's capabilities, ensuring timely and efficient transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the transmitter continuously transmits PDU sets to ensure reliable delivery, then the reliability of information delivery is improved, but the waste of transmission resources increases when the receiver cannot effectively process the PDU sets
Solution Approach 1:
The receiver feeds back assistance information to the transmitter indicating its processing status and capabilities for PDU sets. This feedback mechanism enables the transmitter to adjust transmission behavior accordingly - stopping transmission when the receiver cannot process, thereby avoiding resource waste while maintaining reliable delivery when processing is possible
Solution Approach 2:
The transmission system dynamically adjusts its operation based on real-time receiver processing status. The transmitter transitions between transmitting and stopping transmission modes according to the receiver's assistance information, making the system adaptable to changing processing conditions rather than operating statically
2Reliability
If the transmitter sends complete PDU sets with all PDUs to ensure data integrity, then the reliability of information recovery is improved, but the transmission time and resource consumption increase
Solution Approach 1:
Instead of always transmitting complete PDU sets, the system transmits only the necessary portion - either stopping transmission when the receiver indicates it cannot process complete sets, or transmitting partial sets when full sets are not needed for recovery. This partial action approach maintains sufficient reliability while reducing unnecessary transmission time
Solution Approach 2:
The system changes the transmission parameter from complete PDU sets to partial or conditional PDU sets based on receiver assistance information. This parameter adjustment allows the transmitter to adapt the completeness of transmitted data according to receiver capabilities, optimizing the balance between recovery reliability and transmission efficiency
Data Source
AI summary
Provided in the embodiments of the present disclosure are a PDU set sending method and apparatus, and a communication node, wherein the PDU set sending method and apparatus are applied to a first communication node. The method comprises: acquiring auxiliary information, by means of which a receiving end node processes a PDU set; and sending the PDU set according to the auxiliary information, by means of which the receiving end node processes the PDU set.