Multicast Latency Measurement via IPTV Channel Request Emulation
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Solution Overview
Problem
Current IPTV equipment simulation and testing methods are unable to simulate IPTV-related commands from user devices in real-time, leading to delayed testing feedback and potential network delays, which can be costly and result in user dissatisfaction.
Innovation Solution
A system and method that emulates IPTV user devices by generating channel leave and join requests, monitoring network responses, and calculating latency metrics during a cycle of channel changes, allowing for real-time or near real-time measurement of multicast latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If current IPTV equipment simulation and testing methods are used, then network equipment can be tested, but the testing feedback is delayed and cannot provide real-time or near real-time measurement
Solution Approach 1:
The patent uses an emulation device that copies and simulates IPTV user devices to generate channel leave and join requests. This emulation approach allows the testing system to replicate real user behavior patterns without requiring actual user devices, enabling real-time measurement while maintaining test accuracy. The emulation device creates virtual representations of user devices that can be controlled and monitored precisely.
Solution Approach 2:
The patent implements a feedback mechanism where the emulation device monitors network responses to channel leave and join requests in real-time. The system calculates latency metrics immediately after receiving network responses, providing immediate feedback to network operators. This feedback loop enables continuous measurement and adjustment during the testing process, eliminating delays associated with traditional testing methods.
2Quantity of substance
If traditional testing methods are used, then network conditions can be simulated, but the resource usage is high and requires significant infrastructure
Solution Approach 1:
The patent extracts and processes only the essential information needed for latency measurement from the channel leave and join requests. Instead of caching and processing all network traffic data, the system focuses on extracting specific metrics such as timestamps and response codes. This extraction approach significantly reduces the quantity of information that needs to be cached and processed, lowering resource requirements while maintaining measurement accuracy.
Solution Approach 2:
The emulation device performs multiple functions within a single system: it emulates user devices, generates test requests, monitors network responses, and calculates latency metrics. This multi-functional design reduces the need for separate testing infrastructure components, simplifying the overall system while maintaining comprehensive testing capabilities.
3Productivity
If real-time measurement is implemented, then immediate feedback is provided, but the system complexity increases
Solution Approach 1:
The patent merges the emulation and measurement functions into a single integrated device. The emulation device combines user device simulation, request generation, response monitoring, and latency calculation in one system. This consolidation reduces the overall system complexity compared to having separate emulation and measurement systems, while still providing real-time measurement capabilities.
Data Source
AI summary
Methods, systems, and computer readable media for measuring multicast latency are disclosed. According to one method, the method includes emulating one or more Internet protocol television (IPTV) user devices by generating channel leave and join requests. The method further includes monitoring network responses to the channel leave and join requests and calculating, during a cycle of channel leave and join requests for a user device and prior to repeating the cycle, at least one metric of latency associated with the channel leave and join requests.