MCPTT Floor Management for Off-Network User Info Display
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current mission critical push to talk (MCPTT) services face challenges in displaying user information effectively during off-network operations, particularly in scenarios where communication network infrastructure is destroyed or non-existent, affecting usability and communication efficiency.
Innovation Solution
A method and system for displaying user information in MCPTT groups, involving a first terminal managing a floor and transmitting a floor grant message to other terminals, acquiring and determining real-time transport protocol media packets, and displaying user information based on these packets, ensuring seamless communication and user awareness of active and past talkers within the group.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional network infrastructure is used for MCPTT service, then communication reliability is maintained, but usability deteriorates in off-network scenarios where infrastructure is destroyed or non-existent
Solution Approach 1:
The patent introduces a floor management mechanism as an intermediary system that coordinates communication between terminals in off-network MCPTT scenarios. The floor control terminal manages speaking permissions and transfers floor rights to enable reliable communication without traditional network infrastructure, resolving the contradiction between adaptability to off-network conditions and communication reliability.
Solution Approach 2:
The patent implements self-service mechanisms where terminals autonomously manage floor rights, transmit media packets, and display user information without requiring external network infrastructure. The floor request queue and automatic floor transfer mechanisms enable terminals to self-organize and maintain reliable communication in off-network environments, improving both adaptability and reliability simultaneously.
2Productivity
If floor management mechanism is implemented to control speaking permissions, then communication efficiency is improved, but device complexity increases due to additional message handling and state management
Solution Approach 1:
The patent segments the floor management function into distinct states (floor pending, floor granted, floor transferred) and corresponding message types (floor grant message, media packet). This segmentation simplifies the complex coordination logic by breaking it down into manageable state transitions, improving communication efficiency while keeping the implementation straightforward.
Solution Approach 2:
The patent implements dynamic floor management where speaking permissions are temporarily allocated and transferred between terminals based on real-time communication needs. The floor right is dynamically transferred from the floor control terminal to the terminal with the highest priority in the floor request queue, enabling efficient communication without requiring complex permanent permission structures.
3Reliability
If real-time media packet verification is performed to ensure proper floor transfer, then communication reliability is improved, but processing time increases due to additional verification steps
Solution Approach 1:
The patent performs preliminary verification by checking whether the received media packet's SSRC value matches the expected SSRC value before processing. This preliminary check ensures reliability by preventing incorrect packets from being processed, while the efficient verification mechanism minimizes processing time overhead.
Solution Approach 2:
The patent implements feedback mechanisms where the floor control terminal verifies media packets and provides feedback on floor transfer status. The system confirms when floor rights have been successfully transferred and when verification fails, enabling reliable communication while managing processing time through targeted verification rather than continuous heavy processing.
Data Source
AI summary
A method of displaying user information of a group including a plurality of terminals, the plurality of terminals including a first terminal manager a floor and a second terminal, the method including transmitting a floor grant message from the first terminal to the plurality of terminals, wherein the floor grant message indicates the second terminal as a transfer target of the floor; acquiring floor candidate information of the second terminal by using a floor request queue; receiving a real-time transport protocol media packet within a predetermined time; determining whether the RTP media packet is from the second terminal; and displaying second terminal user information using the floor candidate information based on a result of the determining.