PoC Server Media Type Management During Client Withdrawal
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Solution Overview
Problem
In Push-to-Talk Over Cellular (PoC) sessions, when a client withdraws, the conventional system fails to manage media types effectively, leading to resource waste as only transmitting clients remain, with no receiving clients, causing errors.
Innovation Solution
A method where a withdrawing PoC client sends a withdrawal message with media type information, and the PoC server identifies and corrects the session to exclude unused media types, ensuring only active media types are maintained.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If media types are negotiated only upon opening or joining a PoC session, then the system maintains simplicity in media type management, but resource waste occurs when clients withdraw leaving unused media types active
Solution Approach 1:
The patent applies preliminary action by having the withdrawing client proactively provide media type information in the withdrawal message before actually leaving the session. This allows the server to prepare for media type reconfiguration in advance, preventing resource waste while maintaining manageable complexity through automated preprocessing of withdrawal information
Solution Approach 2:
The patent implements feedback by having the withdrawing client send back media type information to the server in the withdrawal message. This feedback loop enables the server to automatically detect and correct unused media types, resolving the contradiction between resource efficiency and system complexity through automated monitoring and adjustment
2Productivity
If the PoC server continuously monitors and reconfigures media types upon client withdrawal, then resource efficiency is improved, but system complexity and processing overhead increase
Solution Approach 1:
The patent applies self-service by enabling the withdrawing client to automatically provide its media type information in the withdrawal message without requiring server-side monitoring or detection. The server simply processes the provided information, significantly reducing processing complexity while maintaining high session efficiency
Solution Approach 2:
The server performs preliminary configuration based on the withdrawal information provided by the client, reconfiguring media types before the client fully disconnects. This proactive approach improves session efficiency while keeping server complexity manageable through automated, rule-based reconfiguration
3Reliability
If media types are not reconfigured after client withdrawal, then system operations remain simple, but errors occur when transmitting clients remain with no receiving clients
Solution Approach 1:
The patent uses feedback by having the withdrawing client send media type information back to the server, which then automatically reconfigures the session. This automated feedback mechanism ensures session integrity is maintained without requiring complex manual management overhead
Solution Approach 2:
The system achieves self-service where the withdrawal process automatically triggers media type reconfiguration through the information provided in the withdrawal message itself, ensuring reliability without adding significant management overhead
Data Source
AI summary
A PoC system, method, user equipment and server used for managing one or more media types supported in a PoC session opened between a PoC server and one or more PoC clients is provided. When at least one PoC client is engaged in a Open Mobile Alliance (OMA) Push-to-talk (PPT) over Cellular (PoC) multimedia communication service and is to be withdraw from a PoC session in which the PoC client is participating, a PoC server identifies and stores information about one or more media types that were negotiated to be usable between the corresponding PoC client and the PoC server when the corresponding PoC client joined the PoC session. Next, when the number of PoC clients using the identified one or more media types among remaining PoC clients participating in the PoC session is one or less, the PoC server determines that the identified one or more media types is no longer needed for the corresponding PoC session, and corrects the PoC session so as to not use the identified one or more media types. Accordingly, when the one or more media types will not be received by any PoC client in the PoC session the use of the one or more media types in the PoC session is discontinued, so that it is possible to prevent a transmission error of the corresponding one or more media types and to save resources allocated to the corresponding one or more media types.