Multicast Broadcast Service Controller Synchronization
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing and synchronizing multicast and broadcast services across multiple base stations, leading to inconsistencies in signal transmission and reduced macro-diversity gain.
Innovation Solution
A Multicast Broadcast Service Controller (MBSC) is introduced to process and synchronize multicast broadcast data streams, providing timing information and resource allocation to access service network gateways and base stations, ensuring synchronous transmission and improved macro-diversity through the use of a MBSC core processor and MBS region distribution module.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple base stations transmit multicast broadcast data independently without centralized synchronization, then each base station can operate autonomously, but signal inconsistency and reduced macro-diversity gain occur
Solution Approach 1:
A Multicast Broadcast Service Controller (MBSC) is introduced as an intermediary device that centrally manages and synchronizes multicast broadcast data transmission across multiple base stations. The MBSC generates timing information and transmits it to all base stations, ensuring they transmit data synchronously without requiring complex peer-to-peer synchronization protocols between each base station pair.
Solution Approach 2:
The system implements a feedback mechanism where the MBSC monitors transmission timing from base stations and adjusts timing information accordingly. The MBSC receives timing information from base stations and uses this feedback to generate updated timing adjustments, ensuring continuous synchronization and macro-diversity gain while maintaining system reliability.
2Reliability
If base stations transmit multicast broadcast data at different times, then individual transmission flexibility is maintained, but macro-diversity gain is reduced
Solution Approach 1:
The MBSC generates and distributes timing information to all base stations in advance of actual data transmission. This preliminary timing coordination ensures that all base stations are pre-synchronized and ready to transmit multicast broadcast data simultaneously, maximizing macro-diversity gain without requiring real-time coordination during transmission.
3Reliability
If centralized control is implemented for multicast broadcast synchronization, then transmission consistency is improved, but system complexity increases
Solution Approach 1:
The MBSC is designed as a universal controller that handles multiple functions including generating timing information, distributing it to all base stations, monitoring transmission timing, and adjusting timing as needed. This multi-functional design consolidates control capabilities into a single device, improving transmission synchronization while avoiding the need for multiple distributed control systems that would increase overall complexity.
Data Source
AI summary
A multicast broadcast service controller is disclosed. The MBSC processes multicast broadcast data streams for transmission to access service network gateways or base stations. The MBSC includes a MBSC core processor for establishing time synchronization information used by the access service network gateways or base stations to synchronously transmit data streams. The MBSC core processor selects streams for transmission in a time diversity interval (TDI) and builds multicast broadcast (MBS) region content based on the selected streams and configuration information. The MBS region content includes timing synchronization information, resource information and MBS region content location information. A MBS region distribution module (MRD) transmits the MBS region content to the access service network gateways or base stations.