MBMS Resource Allocation in Shared RAN
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Solution Overview
Problem
Current MBMS architectures with network sharing result in resource wastage as multiple PLMNs send identical data over separate MBMS radio bearers, leading to inefficiencies in backhaul and radio capacity usage, especially in shared RAN configurations and overlapping service areas.
Innovation Solution
The method involves transmitting resource request messages to multiple BM-CNs for MBMS user service allocation, with allocated resources being indicated to each other to enable a single broadcast radio bearer for shared RAN delivery, reducing redundant data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple PLMNs send identical MBMS data over separate MBMS radio bearers in shared RAN configurations, then each PLMN can independently provide broadcast/multicast services, but resource wastage occurs in backhaul and radio capacity
Solution Approach 1:
The patent merges multiple separate MBMS radio bearers carrying identical data into a single shared radio bearer in the RAN. The BM-SC receives identical MBMS data from multiple PLMNs and consolidates it into one radio bearer, eliminating redundant transmissions over the air interface and backhaul, while maintaining the ability to serve multiple PLMNs independently.
Solution Approach 2:
The patent creates a universal MBMS delivery mechanism where a single radio bearer in the shared RAN can serve multiple PLMNs simultaneously. The single bearer is configured to carry MBMS data that can be accessed by user equipment subscribed to any of the participating PLMNs, making the radio resource universally useful across multiple network operators.
2Reliability
If separate MBMS radio bearers are established for each PLMN in overlapping service areas, then service independence is maintained, but radio capacity and backhaul resources are wasted
Solution Approach 1:
The patent combines multiple PLMN-specific MBMS bearers into a single shared bearer in the RAN for overlapping service areas. The BM-SC identifies when multiple PLMNs are transmitting identical MBMS data to overlapping areas and consolidates these into one bearer, reducing resource consumption while maintaining service independence through PLMN-specific configuration and authorization.
Solution Approach 2:
The patent uses logical copying where the same MBMS data content is made available to multiple PLMNs through a single physical bearer. Instead of creating multiple physical copies of the data stream, the system creates a single shared transmission that multiple PLMNs can logically access, eliminating redundant resource usage while preserving service independence.
3Reliability
If identical MBMS data is transmitted over multiple separate bearers, then service coverage is ensured, but resource allocation efficiency deteriorates
Solution Approach 1:
The patent merges multiple redundant data transmissions into a single efficient bearer while ensuring service coverage is maintained. The single shared radio bearer carries the MBMS data that can be received by user equipment in coverage areas, and the system ensures that all PLMNs requiring the service can access it through the shared bearer, maintaining coverage while improving efficiency.
Solution Approach 2:
The patent changes the parameters of MBMS service delivery by transitioning from multiple separate bearers with identical data to a single shared bearer. The system modifies bearer configuration parameters, QoS parameters, and resource allocation parameters to enable efficient shared transmission while maintaining the service coverage and quality requirements for all participating PLMNs.
Data Source
AI summary
Embodiments of the present disclosure provide methods, apparatus and computer program products for providing broadcast/multicast services. A method at least partially implemented at an application server comprises transmitting a resource request message to a first broadcast/multicast control node (BM-CN), requesting an allocation of broadcast resource for delivering a multimedia broadcast/multicast service (MBMS) user service; transmitting a further resource request message to a second BM-CN, requesting a further allocation of broadcast resource for delivering the MBMS user service; receiving a first response message from the first BM-CN and a second response message from the second BM-CN, the first response message indicating a first broadcast resource allocated by the first BM-CN for the MBMS user service, and the second response message indicating a second broadcast resource allocated by the second BM-CN for the MBMS user service; and indicating information about the second broadcast resource to the first BM-CN and/or indicating information about the first broadcast resource to the second BM-CN. Methods at the BM-CN and a RAN network node, and corresponding apparatus are also provided.