Multicast Broadcast Service Configuration Lifetime Management
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In multicast and broadcast services, terminals face challenges in accurately acquiring and resetting the lifetime of MBS configuration messages, leading to incorrect decoding and synchronization issues, especially when joining or moving between cells.
Innovation Solution
The method involves transmitting MBS configuration messages at specific superframe intervals based on a condition where the lifetime is indicated by the superframe number, ensuring that terminals decode messages only at the designated time and reset the lifetime accordingly, preventing premature decoding and maintaining synchronization across cell boundaries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal receives MBS configuration messages continuously, then the terminal can acquire configuration information, but the terminal cannot accurately determine when to reset the lifetime and may decode messages prematurely
Solution Approach 1:
The base station transmits MBS configuration messages in advance at specific superframe intervals calculated based on the lifetime value. The terminal uses this preliminary transmission timing to accurately determine when to reset the lifetime, preventing premature decoding while ensuring reliable configuration acquisition.
Solution Approach 2:
The terminal feeds back the decoded configuration information and lifetime status to the base station, which adjusts the transmission timing accordingly. This feedback mechanism ensures the terminal accurately determines when to reset the lifetime and prevents premature decoding of configuration messages.
2Adaptability or versatility
If the terminal joins MBS at different times, then the terminal can access the service, but the terminal cannot acquire the exact lifetime value and may not reset the lifetime correctly
Solution Approach 1:
The base station transmits MBS configuration messages periodically at specific superframe intervals based on the lifetime value. Terminals joining at different times can still accurately determine when to reset the lifetime by using this periodic transmission pattern, ensuring consistent lifetime management regardless of joining timing.
Solution Approach 2:
The system changes the parameter of message transmission timing from arbitrary to specific superframe intervals calculated based on the lifetime value. This parameter change allows terminals joining at different times to accurately determine the correct reset timing, maintaining lifetime accuracy while preserving joining flexibility.
3Productivity
If the MBS configuration message is transmitted with the counted down value of the previous lifetime, then the terminal can receive the message, but the terminal cannot acquire the exact lifetime and cannot reset the lifetime to the exact value
Solution Approach 1:
The base station performs preliminary calculation of the correct transmission timing based on the lifetime value before transmitting the configuration message. This preliminary action ensures the terminal receives the message at the exact moment needed for accurate lifetime reset, maintaining both transmission efficiency and lifetime value precision.
Data Source
AI summary
For managing MBS configuration information, a terminal decodes an MBS configuration message including configuration information for an MBS operation and a lifetime, and then decodes an MBS configuration message that is transmitted at a time that the lifetime indicates.