Transmission Apparatus Notice Data Timing for Packet Loss Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for detecting packet loss in event data transmitted according to an event occurrence are inefficient, particularly when the number of packets is small or when different marker bits cannot be applied to leading and ending packets, leading to delayed detection of packet loss.
Innovation Solution
A transmission apparatus that includes a determination unit to determine the transmission timing of notice data, such as a sender report (SR), based on the transmission state of event data, allowing for rapid detection of packet loss by the reception apparatus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the reception apparatus waits for a predetermined time since receiving the leading packet to detect packet loss, then the packet loss can be detected, but the detection time is delayed when the number of event data packets is small
Solution Approach 1:
The transmission apparatus transmits notice data immediately after sending event data packets, before the reception apparatus would normally detect packet loss. This preliminary action of sending notification information allows the reception apparatus to know about transmitted packets in advance, enabling immediate loss detection without waiting for the predetermined time period to expire.
2Reliability
If different marker bits are applied to leading and ending packets of a packet group, then packet loss can be detected, but the method cannot be applied when only one packet is transmitted for an event
Solution Approach 1:
The invention extracts the essential function of marker bits (identifying packet boundaries) and separates it from the physical marker bit implementation. By using notice data with sequence numbers instead of relying on specific marker bit patterns, the system achieves packet loss detection capability without being constrained by the need for distinct leading and ending packet markers, making it applicable regardless of the number of event packets transmitted.
3Loss of time
If notice data is transmitted frequently to enable rapid packet loss detection, then detection speed improves, but network load increases
Solution Approach 1:
The transmission apparatus uses its own existing transmission resources and knowledge of sent packets to generate and transmit notice data. The notice data is constructed from information already available at the transmission end (sequence numbers, packet counts), eliminating the need for separate detection mechanisms or additional heavy signaling protocols, thus minimizing network load while enabling rapid loss detection.
Data Source
AI summary
A determination unit of a transmission apparatus determines a transmission timing of notice data (SR) for informing a reception apparatus that the event data has been transmitted according to a transmission state of the event data. An transmission unit transmits the SR at the timing determined by the determination unit.