Packet Residence-Time Control for Real-Time Mobile Communications
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Solution Overview
Problem
Existing mobile communication systems face challenges in maintaining high real-time performance for XR services due to delays in packet transmission, which degrade service quality, particularly when using User Datagram Protocol (UDP) as the upper layer protocol.
Innovation Solution
A communication control method that measures the residence time of packets in a communication apparatus, discards packets exceeding a configured time threshold to prevent delays, and adjusts transmission accordingly, thereby improving real-time performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If packets are transmitted without residence time control, then transmission volume is maintained, but real-time performance degrades due to packet delays
Solution Approach 1:
The system performs preliminary measurement of residence time for packets before transmission. By measuring how long packets have resided in the communication apparatus beforehand, the system can proactively identify and discard packets that would exceed the time threshold, preventing delayed packets from being transmitted in the first place
Solution Approach 2:
The system dynamically changes the transmission decision based on the residence time parameter. By comparing the measured residence time against a configured time threshold, the system adjusts whether to transmit or discard each packet, making transmission parameters adaptive to real-time conditions
2Reliability
If packets with long residence time are transmitted, then transmission completeness is maintained, but service quality degrades
Solution Approach 1:
The system extracts problematic packets from the transmission stream by discarding packets whose residence time exceeds the threshold. This selective removal of delayed packets prevents them from degrading service quality, while allowing timely packets to proceed with transmission
Solution Approach 2:
The system discards packets that have exceeded the residence time threshold, accepting the loss of those specific packets in exchange for maintaining overall service quality. The discarded packets are typically those that would cause more harm than benefit due to their age
3Reliability
If residence time measurement and packet discarding is implemented, then real-time performance improves, but device complexity increases
Solution Approach 1:
The communication apparatus performs self-monitoring of its own packet residence times using internal measurement functionality. This self-service approach eliminates the need for external monitoring systems or complex coordination with other network elements
Data Source
AI summary
The communication control method controls wireless communication of a packet from a first communication apparatus to a second communication apparatus in a mobile communication system. The communication control method includes, in the first communication apparatus, measuring, on a per packet basis, a residence time of a packet which has not been transmitted and has resided in the first communication apparatus, comparing the residence time of the packet with a time threshold, and discarding the packet of which the residence time exceeds the time threshold without transmitting the packet.