IPTV Terminal Startup via Pre-Authentication IGMP Join
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Solution Overview
Problem
IPTV services take a long time to start due to the sequential processes of initialization, network access, service authentication, and program acquisition, resulting in a total overhead of around 25 seconds, which affects user experience.
Innovation Solution
The method involves sending an IGMP-based join request message via a physical link connection before accessing the IP network to acquire a media stream of a multicast group, allowing the IPTV service to start quickly without waiting for IP network access authentication and service authentication to complete.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal waits for IP network access authentication and service authentication to complete before acquiring media streams, then network security and service authorization are ensured, but the IPTV service startup time increases to around 25 seconds
Solution Approach 1:
The terminal sends IGMP join request messages before completing IP network access authentication to pre-acquire media streams. This preliminary action allows the service startup to overlap with authentication processes, reducing total startup time while maintaining security through subsequent authentication steps
Solution Approach 2:
The startup process is segmented into parallel operations: authentication procedures (B and C) and media stream acquisition (D and E) are decoupled and can proceed independently. The terminal divides the sequential workflow into concurrent tasks, allowing authentication and stream acquisition to happen simultaneously rather than waiting for one to complete before starting the other
2Stability of the object's composition
If the terminal follows the sequential five-procedure startup process (initialization, network access, service access, program acquisition, service broadcast), then system stability and proper protocol compliance are maintained, but the total overhead reaches around 25 seconds
Solution Approach 1:
The terminal performs media stream acquisition procedures (D and E) in advance, before completing all authentication steps. By preparing program information and joining multicast groups early in the initialization phase, the system reduces the critical path duration while maintaining protocol compliance through proper sequence execution
Solution Approach 2:
The system maintains continuous useful action by overlapping authentication procedures with media stream acquisition. Instead of idle waiting periods between sequential steps, the terminal continuously progresses through multiple procedures simultaneously, keeping system resources actively utilized throughout the startup process
3Reliability
If the terminal acquires media streams after completing all authentication procedures, then proper service authorization is ensured, but the user experience deteriorates due to long waiting time
Solution Approach 1:
The terminal initiates media stream acquisition before authentication completes, using preliminary actions to prepare service content in advance. This approach improves user experience by reducing perceived waiting time while service authorization is still being finalized in the background
Solution Approach 2:
The system uses an intermediary approach where the terminal sends IGMP join requests to multicast groups before full authentication, allowing media streams to be prepared and buffered. This intermediary state enables faster service delivery while maintaining proper authorization checks through the authentication subsystem
Data Source
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AI summary
A method for starting an Internet Protocol Television (IPTV) service is provided, which includes the following steps. Before the terminal accesses an IP network, an Internet Group Management Protocol (IGMP)-based join request message carrying multicast program channel information is sent via a physical link connection. Then, a media stream of a multicast group which the join request message requests to join in is acquired. A device and a system for starting an IPTV service and an IPTV terminal are also provided. The IPTV service startup speed is accelerated, and the time spent on waiting for the startup of the IPTV services is shortened.