Multicast Broadcast Service Session Management for Packet Loss Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In communication systems, multicast and broadcast service (MBS) sessions often deactivate when no packets are transmitted for a predetermined time, leading to packet loss and increased network signaling when the session is reactivated, particularly affecting applications that require low latency and reliability like public safety services.
Innovation Solution
The method involves maintaining an MBS session as active even if no packets are received for a predetermined period by sending a request that indicates the session should not be deactivated, using criteria such as low latency requirements or public safety applications, and configuring the multicast and broadcast user plane function to support the session without reporting packet absence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the MBS session is deactivated when no packets are transmitted for a predetermined time, then network resources are saved, but packet loss occurs and network signaling increases when reactivation is needed
Solution Approach 1:
The patent changes the deactivation parameter from a fixed time threshold to a dynamic parameter that considers service type and latency requirements. By modifying the deactivation condition parameters, the system avoids unnecessary deactivation for services requiring continuous connectivity, thereby reducing packet loss while maintaining resource efficiency for other services.
Solution Approach 2:
The patent introduces dynamic behavior to the MBS session management by making the deactivation decision adaptive rather than static. The session deactivation threshold becomes dynamic based on service characteristics, allowing the system to automatically adjust between aggressive resource release and conservative packet delivery depending on the specific service requirements.
2Loss of energy
If the MBS session is deactivated when no packets are transmitted, then network resource usage is reduced, but network signaling increases during reactivation
Solution Approach 1:
The patent modifies the deactivation parameter from a universal time threshold to a service-specific parameter that incorporates latency requirements and service type. This parameter change prevents unnecessary deactivation cycles for services that require continuous sessions, thereby reducing the signaling overhead associated with repeated activation/deactivation cycles while maintaining resource efficiency elsewhere.
3Reliability
If the MBS session remains active to prevent packet loss, then packet delivery reliability improves, but network resource consumption increases
Solution Approach 1:
The patent applies local quality by treating different MBS sessions differently based on their specific requirements. Instead of a uniform deactivation policy, the system applies localized deactivation rules to each service type, maintaining active sessions only where necessary (low latency, high reliability services) while allowing deactivation for other services, thus optimizing the balance between reliability and resource consumption on a per-service basis.
Solution Approach 2:
The patent introduces dynamic session management where the deactivation behavior adapts to service requirements. The system dynamically determines whether to maintain or release resources based on real-time service characteristics, creating a flexible resource allocation strategy that optimizes the trade-off between packet delivery reliability and network resource consumption.
4Device complexity
If the MBS session is deactivated based on fixed time threshold, then device complexity is reduced, but adaptability to different service requirements decreases
Solution Approach 1:
The patent transforms the fixed deactivation threshold parameter into a dynamic parameter that adapts to service requirements. By changing from a single universal time value to service-specific parameters considering latency and service type, the system achieves adaptability without significantly increasing complexity, as the parameter adaptation follows structured rules based on service characteristics.
Solution Approach 2:
The patent introduces dynamic adaptability to the session management system by making deactivation behavior responsive to service requirements. The system dynamically adjusts its behavior based on service type and latency needs, providing versatility while maintaining manageable complexity through rule-based adaptation rather than complex decision-making algorithms.
Data Source
AI summary
A method, apparatus and computer program product are provided for selectively maintain a multicast and broadcast service (MBS) session as active even though packets may not be received for at least a predetermined period of time. In the context of a method, the method includes determining that an MBS session is to remain active. The method also includes providing an MBS session create request that includes a description for the MBS session. The MBS session create request further includes an indication that the MBS session is not to be deactivated in the event that incoming packets are not detected for a period of time.