Dynamic MBMS Bearer Assignment to Multicast Channels
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Solution Overview
Problem
Current MBMS networks in public safety applications are statically configured, which is inadequate for dynamic scenarios requiring real-time adjustments in target groups, service areas, and Quality of Service (QoS) due to their inflexibility.
Innovation Solution
A system and method for dynamically assigning a Multimedia Broadcast/Multicast Service (MBMS) bearer to a Multicast Channel (MCH) within a communication network, allowing for real-time adjustments based on specified QoS requirements by a logical server that inspects existing configurations and modifies or creates new MCHs as needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If MBMS networks are statically configured in advance, then network configuration is simple and stable, but the system cannot adapt to dynamic changes in public safety scenarios such as changing target groups, service areas, and QoS requirements
Solution Approach 1:
The patent implements dynamic configuration of MBMS bearers and MCH assignments that can be adjusted in real-time based on changing public safety scenario requirements, including dynamic target group identification, service area changes, and QoS parameter modifications, transforming the static configuration into a dynamic adaptive system
Solution Approach 2:
The system dynamically modifies key parameters including bearer QoS parameters (priority, guaranteed bit rate, maximum bit rate), MCH configuration parameters (subframe allocation pattern, service area), and target group identifiers based on real-time scenario requirements, enabling adaptation without complete reconfiguration
2Reliability
If static MBMS configuration is used, then system operation is simple, but it cannot meet real-time QoS requirements in emergency situations
Solution Approach 1:
The patent implements feedback mechanisms where the system continuously monitors scenario requirements and dynamically adjusts MBMS bearer configurations and MCH assignments to maintain QoS guarantees, using feedback from scenario management entities to trigger reconfiguration when changes are detected
3Adaptability or versatility
If dynamic assignment of MBMS bearers to MCHs is implemented, then the system can adapt to changing requirements, but the configuration and management becomes more complex
Solution Approach 1:
The patent segments the dynamic configuration process into distinct manageable components: bearer configuration management, MCH assignment management, scenario parameter management, and coordination between network entities, allowing complex dynamic operations to be handled through modular independent functions
Solution Approach 2:
The system introduces intermediary coordination entities including the Broadcast Multicast Service Center (BM-SC) and Mobility Management Entity (MME) that mediate between scenario requirements and actual bearer/MCH configuration, simplifying the management complexity by providing centralized coordination and abstraction
Data Source
AI summary
Methods for dynamically assigning a multimedia broadcast/multicast service (MBMS) bearer to a Multicast Channel (MCH) in a communication network include a logical server: receiving a MBMS configuration for the communication network; receiving a request for a MBMS bearer within a service area, wherein the request specifies a QoS requirement for the MBMS bearer; inspecting the MBMS configuration to determine if an existing MCH in the service area meets the QoS requirement for the MBMS bearer; based on the inspecting, assigning the MBMS bearer to the existing MCH or assigning the MBMS bearer to a new MCH.