5MBS Session ID Allocation for Regional Network Compliance
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Solution Overview
Problem
Current 5G Multicast Broadcast Service (5MBS) solutions do not effectively address national-wide content delivery, as existing architectures often require cross-regional N4 interfaces between Multicast Broadcast Service Function (MBSF) and Multicast Broadcast User Plane Function (MB-UPF), violating 5G Core (5GC) principles and operator guidelines.
Innovation Solution
Deploying MBSF and MB-UPFs regionally, with MBSF centrally managing session IDs and selecting appropriate MB-SMFs based on service area information or local configuration, ensuring N4 interfaces do not cross regions, thus adhering to 5GC principles by allowing regional distribution of content.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If MBSF and MB-UPFs are deployed regionally to adhere to 5GC principles, then network architecture compliance is improved, but cross-regional content delivery capability deteriorates
Solution Approach 1:
The patent segments the national content delivery service into multiple regional MBS sessions, each managed by local MBSF and MB-UPF entities. Instead of a single cross-regional session, the system divides the service into region-specific sessions that comply with 5GC architectural principles while collectively achieving nationwide coverage through coordinated regional deployments
Solution Approach 2:
The patent introduces an intermediary mechanism (centralized MBSF with session ID allocation and MB-SMF selection capabilities) that coordinates between regional MB-UPFs to enable cross-regional content delivery. This intermediary manages the session establishment across regions without requiring direct cross-regional N4 interfaces, thus maintaining architectural compliance while achieving nationwide service
2Area of stationary object
If N4 interfaces cross regions to enable national-wide content delivery, then service coverage is improved, but violation of 5GC principles occurs
Solution Approach 1:
The patent segments nationwide content delivery into multiple regional MBS sessions, each confined to specific geographic regions with local N4 interfaces. This segmentation eliminates the need for cross-regional N4 interfaces while achieving comprehensive national coverage through the aggregation of multiple regional sessions
Solution Approach 2:
The patent resolves the spatial constraint by introducing a temporal and logical dimension - using centralized session management and coordinated regional sessions to achieve nationwide coverage without physical cross-regional interface connections. The solution moves from a single-dimension spatial approach to a multi-dimensional approach combining centralized coordination with distributed regional execution
Data Source
AI summary
Various embodiments of the present disclosure provide methods and apparatuses for 5MBS nation-wide services. According to an embodiment, a method implemented at a Multicast Broadcast Service Function, MBSF, comprises: receiving a first request to allocate a Multicast Broadcast Service, MBS, session identifier, ID, for an MBS session from an Application Function, AF; allocating the MBS session ID for the MBS session and selecting at least one Multicast Broadcast—Session Management Function, MB-SMF, based on the first request; providing the allocated MBS session ID to the at least one MB-SMF; and sending the allocated MBS session ID to the AF.