Suspend Packets for VoIP Keep-Alive During Packet Attacks
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
VoIP telecommunications systems face performance degradation and increased load due to packet attacks, which can lead to erroneous assumptions of device unavailability and increased message traffic, causing network instability.
Innovation Solution
Implementing a mechanism where affected devices periodically transmit suspend packets to suspend keep-alive messages during a packet attack, allowing devices to conserve processing power and wait for the attack to subside, with the ability to resume normal operations once the attack is mitigated.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If devices continue to exchange keep-alive messages during a packet attack, then device availability can be detected, but network load increases and processing resources are consumed
Solution Approach 1:
The patent implements periodic suspend packets that temporarily halt the exchange of keep-alive messages during detected packet attacks. Instead of continuous message exchange, the system uses periodic suspension intervals to reduce network traffic while maintaining the ability to detect device availability when needed.
Solution Approach 2:
The patent extracts and removes harmful keep-alive message traffic during attack conditions by implementing suspend packets that prevent further message exchange. This separates the normal availability detection function from the harmful continuous messaging that occurs during attacks.
2Reliability
If devices transmit keep-alive messages at normal rate during packet attack, then connectivity monitoring is maintained, but processing power is depleted
Solution Approach 1:
The system implements periodic suspension of keep-alive message transmission during detected attacks, reducing processing requirements while maintaining connectivity monitoring capability. The suspend packets create intervals where no processing is needed, conserving device energy during attack conditions.
Solution Approach 2:
The patent applies partial action by suspending only the keep-alive message exchange during attacks rather than completely shutting down connectivity monitoring. This partial suspension reduces processing power consumption while maintaining essential monitoring functions.
3Productivity
If devices assume unavailability during packet attack, then message traffic is reduced, but network stability deteriorates due to erroneous assumptions
Solution Approach 1:
The patent introduces suspend packets as intermediary control messages that mediate between devices during attacks. These suspend packets provide explicit coordination information, preventing erroneous unavailability assumptions while reducing message traffic through coordinated suspension rather than chaotic continued messaging.
Solution Approach 2:
The system implements feedback through suspend packet exchange, where devices provide explicit status information about attack conditions to each other. This feedback mechanism prevents erroneous assumptions of unavailability by communicating the actual attack state, maintaining network stability through informed coordination.
Data Source
AI summary
A method is disclosed that enables mitigating at least some of the problems caused by a packet attack. When a first Internet Protocol (IP)-capable device is subjected to a packet attack, it indicates periodically to a second IP-capable device that certain communications with the first device are to be suspended. The periodic transmitting of the indication is performed at a slower rate than the keep-alive mechanism that is normally used to detect loss of connectivity. When the second device receives the transmitted indication, it refrains from transmitting keep-alive messages to the first device for a predetermined interval. Meanwhile, the first device also refrains from transmitting keep-alive messages to the second device for a similar interval. In transmitting the suspend indication, the illustrative embodiment seeks to prevent pairs of communicating devices that are experiencing packet attacks from continuing their operation under the erroneous assumption that each device is unavailable.