MCPTT Group Imminent Peril State Cancellation Without Ongoing Calls
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Solution Overview
Problem
Current 5G mobile communication systems lack a defined procedure to automatically cancel the in-progress imminent peril state of a group when there is no ongoing call, which is critical for mission-critical services like public safety agencies, potentially leading to operational disruptions.
Innovation Solution
A method and apparatus are introduced to handle the in-progress imminent peril state by using a Session Initiation Protocol (SIP) request message to cancel the state, involving an MCPTT server and client that validate and reset the state, notify affiliated members, and transmit responses to ensure seamless cancellation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the system maintains the in-progress imminent peril state until explicitly cancelled, then reliability of mission-critical services is improved, but device complexity increases due to the need for manual cancellation procedures and state management
Solution Approach 1:
The system automatically cancels the in-progress imminent peril state when no call is ongoing on the group, eliminating the need for manual cancellation procedures. The MCPTT server autonomously detects the absence of ongoing calls and resets the state, allowing the system to serve itself without additional user intervention or complex manual state management procedures.
2Ease of operation
If the system automatically cancels the in-progress imminent peril state when no call is ongoing, then ease of operation is improved, but reliability may worsen due to potential erroneous state cancellation
Solution Approach 1:
The MCPTT server continuously monitors the call status of the group and uses this feedback to determine when to cancel the in-progress imminent peril state. By basing the cancellation decision on actual call status information rather than manual user input, the system achieves automatic operation while maintaining accuracy through objective state verification.
Solution Approach 2:
The system performs preliminary verification by checking whether a call is ongoing before cancelling the imminent peril state. This preliminary action ensures that cancellation only occurs when appropriate (when no call is ongoing), preventing erroneous state cancellation while maintaining ease of operation through automated decision-making.
3Reliability
If manual cancellation procedure is required for in-progress imminent peril state, then reliability is improved by preventing erroneous cancellation, but loss of time increases due to manual intervention requirements
Solution Approach 1:
The MCPTT server automatically performs the cancellation of the in-progress imminent peril state without requiring manual user intervention. The system monitors call status and autonomously resets the state when no call is ongoing, eliminating the time-consuming manual cancellation procedure while maintaining reliable control through objective state verification.
Solution Approach 2:
The system performs preliminary verification of call status automatically before cancellation, ensuring that cancellation only occurs when appropriate. This preliminary automated check prevents erroneous cancellation while eliminating the need for time-consuming manual procedures, achieving both speed and reliability.
Data Source
AI summary
The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. A method performed by a mission critical push to talk (MCPTT) server for handling in-progress imminent peril state in a communication system is provided. The method includes receiving a session initiation protocol (SIP) request message transmitted from an MCPTT client of an MCPTT group to cancel an in-progress imminent peril state of the MCPTT group, wherein the SIP request message includes an imminent peril indication being set to false, setting the in-progress imminent peril state of the MCPTT group to a value of false, clearing all MCPTT identification (ID) of MCPTT users that triggered the setting of the in-progress imminent peril state of the MCPTT group to true, transmitting a SIP notification message including an imminent peril indication set to false for each of affiliated members of the MCPTT group, and transmitting a response to the SIP request message.